The hardware for data archiving has expanded capacities for digital storage enormously in the past decade or more. The IUCr evaluated the costs and benefits of this within an official working group which advised that raw data archiving would allow ground truth reproducibility in published studies. Consultations of the IUCr's Commissions ensued via a newly constituted standing advisory committee, the Committee on Data. At all stages, the IUCr financed workshops to facilitate community discussions and possible methods of raw data archiving implementation. The recent launch of the IUCrData journal's Raw Data Letters is a milestone in the implementation of raw data archiving beyond the currently published studies: it includes diffraction patterns that have not been fully interpreted, if at all. The IUCr 75th Congress in Melbourne included a workshop on raw data reuse, discussing the successes and ongoing challenges of raw data reuse. This article charts the efforts of the IUCr to facilitate discussions and plans relating to raw data archiving and reuse within the various communities of crystallography, diffraction and scattering.

Spectroscopic data, particularly diffraction data, are essential for materials characterization due to their comprehensive crystallographic information. The current crystallographic phase identification, however, is very time consuming. To address this challenge, we have developed a real-time crystallographic phase identifier based on a convolutional self-attention neural network (CPICANN). Trained on 692 190 simulated powder X-ray diffraction (XRD) patterns from 23 073 distinct inorganic crystallographic information files, CPICANN demonstrates superior phase-identification power. Single-phase identification on simulated XRD patterns yields 98.5 and 87.5% accuracies with and without elemental information, respectively, outperforming JADE software (68.2 and 38.7%, respectively). Bi-phase identification on simulated XRD patterns achieves 84.2 and 51.5% accuracies, respectively. In experimental settings, CPICANN achieves an 80% identification accuracy, surpassing JADE software (61%). Integration of CPICANN into XRD refinement software will significantly advance the cutting-edge technology in XRD materials characterization.

The advent of serial crystallography has rejuvenated and popularized room-temperature X-ray crystal structure determination. Structures determined at physiological temperature reveal protein flexibility and dynamics. In addition, challenging samples (e.g. large complexes, membrane proteins and viruses) form fragile crystals that are often difficult to harvest for cryo-crystallography. Moreover, a typical serial crystallography experiment requires a large number of microcrystals, mainly achievable through batch crystallization. Many medically relevant samples are expressed in mammalian cell lines, producing a meager quantity of protein that is incompatible with batch crystallization. This can limit the scope of serial crystallography approaches. Direct in situ data collection from a 96-well crystallization plate enables not only the identification of the best diffracting crystallization condition but also the possibility for structure determination under ambient conditions. Here, we describe an in situ serial crystallography (iSX) approach, facilitating direct measurement from crystallization plates mounted on a rapidly exchangeable universal plate holder deployed at a microfocus beamline, ID23-2, at the European Synchrotron Radiation Facility. We applied our iSX approach on a challenging project, autotaxin, a therapeutic target expressed in a stable human cell line, to determine the structure in the lowest-symmetry P1 space group at 3.0 Å resolution. Our in situ data collection strategy provided a complete dataset for structure determination while screening various crystallization conditions. Our data analysis reveals that the iSX approach is highly efficient at a microfocus beamline, improving throughput and demonstrating how crystallization plates can be routinely used as an alternative method of presenting samples for serial crystallography experiments at synchrotrons.

A significant part of the present and future of optoelectronic devices lies on thin multilayer heterostructures. Their optical properties depend strongly on strain, being essential to the knowledge of the stress level to optimize the growth process. Here the structural and microstructural characteristics of sub-micron a-ZnO epilayers (12 to 770 nm) grown on r-sapphire by metal–organic chemical vapour deposition are studied. Morphological and structural studies have been made using scanning electron microscopy and high-resolution X-ray diffraction. Plastic unit-cell distortion and corresponding strain have been determined as a function of film thickness. A critical thickness has been observed as separating the non-elastic/elastic states with an experimental value of 150–200 nm. This behaviour has been confirmed from ultraviolet photoelectron spectroscopy, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy measurements. An equation that gives the balance of strains is proposed as an interesting method to experimentally determine this critical thickness. It is concluded that in the thinnest films an elongation of the Zn—O bond takes place and that the plastic strained ZnO films relax through nucleation of misfit dislocations, which is a consequence of three-dimensional surface morphology.

The compression behavior of [Rb(18-crown-6)][SbCl6] crystal under pressure up to 2.16 (3) GPa was investigated in a diamond anvil cell (DAC) using a mixture of pentane–iso­pentane (1:4) as the pressure-transmitting fluid. The compound crystallizes in trigonal space group R3 and no phase transition was observed in the indicated pressure range. The low value of pressure bulk modulus [9.1 (5) GPa] found in this crystal is a characteristic of soft materials with predominant dispersive and electrostatic interaction forces. The nonlinear relationship between unit-cell parameters under high pressure is attributed to the influence of reduced intermolecular H⋯Cl contacts under pressure over 0.73 GPa. It also explains the high compression efficiency of [Rb(18-crown-6)][SbCl6] crystals at relatively low pressures, resulting in a significant shift of the Rb atom to the center of the crown ether cavity. At pressures above 0.9 GPa, steric repulsion forces begin to play a remarkable role, since an increasing number of interatomic H⋯Cl and H⋯H contacts become shorter than the sum of their van der Waals (vdW) radii. Below 0.9 GPa, both unit-cell parameter dependences (P–a and P–c) exhibit hysteresis upon pressure release, demonstrating their influence on the disordered model of Rb atoms. The void reduction under pressure also demonstrates two linear sections with the inflection point at 0.9 GPa. Compression of the crystal is accompanied by a significant decrease in the volume of the voids, leading to the rapid approach of Rb atoms to the center of the crown ether cavity. For the Rb atom to penetrate into the center of the crown ether cavity in [Rb(18-crown-6)][SbCl6], it is necessary to apply a pressure of about 2.5 GPa to disrupt the balance of atomic forces in the crystal. This sample serves as a compression model demonstrating the influence of both attractive and repulsive forces on the change in unit-cell parameters under pressure.

A few real case examples are presented on how to report magnetic structures, with precise step-by-step explanations, following the guidelines of the IUCr Commission on Magnetic Structures [Perez-Mato et al. (2024). Acta Cryst. B80, 219–234]. Four examples have been chosen, illustrating different types of single-k magnetic orders, from the basic case to more complex ones, including odd-harmonics, and one multi-k order. In addition to acquainting researchers with the process of communicating commensurate magnetic structures, these examples also aim to clarify important concepts, which are used throughout the guidelines, such as the transformation to a standard setting of a magnetic space group.

In recent years, there is a significant interest from the crystallographic and materials science communities to have access to raw diffraction data. The effort in archiving raw data for access by the user community is spearheaded by the International Union of Crystallography (IUCr) Committee on Data. In materials science, where powder diffraction is extensively used, the challenge in archiving raw data is different to that from single crystal data, owing to the very nature of the contributions involved. Powder diffraction (X-ray or neutron) data consist of contributions from the material under study as well as instrument specific parameters. Having raw powder diffraction data can be essential in cases of analysing materials with poor crystallinity, disorder, micro structure (size/strain) etc. Here, the initiative and progress made by the International Centre for Diffraction Data (ICDDR) in archiving powder X-ray diffraction raw data in the Powder Diffraction FileTM (PDFR) database is outlined. The upcoming 2025 release of the PDF-5+ database will have more than 20 800 raw powder diffraction patterns that are available for reference.

The reaction of Co(NCS)2 with 4-methyl­pyridine N-oxide (C6H7NO) leads to the formation of two compounds, namely, tetra­kis­(4-methyl­pyridine N-oxide-κO)bis­(thio­cyanato-κN)cobalt(II), [Co(NCS)2(C6H7NO)4] (1), and tris­(4-methyl­pyridine N-oxide-κO)bis­(thio­cyanato-κN)cobalt(II), [Co(NCS)2(C6H7NO)3] (2). The asymmetric unit of 1 consists of one CoII cation located on a centre of inversion, as well as one thio­cyanate anion and two 4-methyl­pyridine N-oxide coligands in general positions. The CoII cations are octa­hedrally coordinated by two terminal N-bonding thio­cyanate anions in trans positions and four 4-methyl­pyridine N-oxide ligands. In the extended structure, these complexes are linked by C—H⋯O and C—H⋯S inter­actions. In compound 2, two crystallographically independent complexes are present, which occupy general positions. In each of these complexes, the CoII cations are coordinated in a trigonal–bipyramidal manner by two terminal N-bonding thio­cyanate anions in axial positions and by three 4-methyl­pyridine N-oxide ligands in equatorial positions. In the crystal, these complex mol­ecules are linked by C—H⋯S inter­actions. For compound 2, a nonmerohedral twin refinement was performed. Powder X-ray diffraction (PXRD) reveals that 2 was nearly obtained as a pure phase, which is not possible for compound 1. Differential thermoanalysis and thermogravimetry data (DTA–TG) show that compound 2 start to decompose at about 518 K.

The crystal structure of the title compound {systematic name: (4S,4aS,5aR,12aR)-4,7-bis­(di­methyl­amino)-9-[(2,2-di­methyl­propyl­amino)­meth­yl]-1,10,11,12a-tetra­hydroxy-3,12-dioxo-4a,5,5a,6-tetra­hydro-4H-tetra­cene-2-carb­oxamide dihydrate, C29H40N4O7·2H2O} has been solved and refined using synchrotron X-ray powder diffraction data: it crystallizes in space group R3 with a = 24.34430 (7), c = 14.55212 (4) Å, V = 7468.81 (2) Å3 and Z = 9. Most of the hydrogen bonds are intra­molecular, but two classical N—H⋯O inter­molecular hydrogen bonds (along with probable weak C—H⋯O and C—H⋯N hydrogen bonds) link the mol­ecules into a three-dimensional framework. The framework contains voids, which contain disordered water mol­ecules. Keto–enol tautomerism is apparently important in this mol­ecule, and the exact mol­ecular structure is ambiguous.

The title mol­ecule, C18H26O4, consists of two symmetrical halves related by the inversion centre at the mid-point of the central –C—C– bond. The hexene ring adopts an envelope conformation. In the crystal, the mol­ecules are connected into dimers by C—H⋯O hydrogen bonds with R22(8) ring motifs, forming zigzag ribbons along the b-axis direction. According to a Hirshfeld surface analysis, H⋯H (68.2%) and O⋯H/H⋯O (25.9%) inter­actions are the most significant contributors to the crystal packing. The contribution of some disordered solvent to the scattering was removed using the SQUEEZE routine [Spek (2015). Acta Cryst. C71, 9–18] in PLATON. The solvent contribution was not included in the reported mol­ecular weight and density.

The title compound, [Ni(NCS)2(C6H7N)2]n, was prepared by the reaction of Ni(NCS)2 with 4-methyl­pyridine in water. Its asymmetric unit consists of two crystallographically independent NiII cations, of which one is located on a twofold rotational axis whereas the second occupies a center of inversion, two independent thio­cyanate anions and two independent 4-methyl­pyridine co­ligands in general positions. Each NiII cation is octa­hedrally coordinated by two 4-methyl­pyridine coligands as well as two N- and two S-bonded thio­cyanate anions. One of the cations shows an all-trans, the other a cis–cis–trans configuration. The metal centers are linked by pairs of μ-1,3-bridging thio­cyanate anions into [101] chains. X-ray powder diffraction shows that a pure crystalline phase has been obtained and thermogravimetry coupled to differential thermoanalysis reveals that the title compound loses half of the 4-methyl­pyridine coligands and transforms into Ni(NCS)2(C6H7N). Nearly pure samples of this compound can be obtained by thermal annealing and a Rietveld refinement demonstrated that it is isotypic to its recently reported Cd analog [Neumann et al., (2020). CrystEngComm. 22, 184–194] In its crystal structure, the metal cations are linked by one μ-1,3(N,S)- and one μ-1,3,3(N,S,S)-bridging thio­cyanate anion into single chains that condense via the μ-1,3,3(N,S,S)-bridging anionic ligands into double chains.

The title complex, (1,4,7,10,13,16-hexa­oxa­cyclo­octa­decane-1κ6O)(μ-oxalato-1κ2O1,O2:2κ2O1',O2')triphenyl-2κ3C-potassium(I)tin(IV), [KSn(C6H5)3(C2O4)(C12H24O6)] or K[18-Crown-6][(C6H5)3SnO4C2], was synthesized. The complex consists of a potassium cation coordinated to the six oxygen atoms of a crown ether mol­ecule and the two oxygen atoms of the oxalatotri­phenyl­stannate anion. It crystallizes in the monoclinic crystal system within the space group P21. The tin atom is coordinated by one chelating oxalate ligand and three phenyl groups, forming a cis-trigonal–bipyramidal geometry around the tin atom. The cations and anions form ion pairs, linked through carbonyl coordination to the potassium atoms. The crystal structure features C—H⋯O hydrogen bonds between the oxygen atoms of the oxalate group and the hydrogen atoms of the phenyl groups, resulting in an infinite chain structure extending along a-axis direction. The primary inter-chain inter­actions are van der Waals forces.

Reaction of copper(I)chloride with 2,3-di­methyl­pyrazine in ethanol leads to the formation of the title compound, poly[[μ-chlorido-μ-(2,3-di­methyl­pyrazine)-copper(I)] ethanol hemisolvate], {[CuCl(C6H8N2)]·0.5C2H5OH}n or CuCl(2,3-di­methyl­pyrazine) ethanol hemisolvate. Its asymmetric unit consists of two crystallographically independent copper cations, two chloride anions and two 2,3-di­methyl­pyrazine ligands as well as one ethanol solvate mol­ecule in general positions. The ethanol mol­ecule is disordered and was refined using a split model. The methyl H atoms of the 2,3-di­methyl­pyrazine ligands are also disordered and were refined in two orientations rotated by 60° relative to each other. In the crystal structure, each copper cation is tetra­hedrally coordinated by two N atoms of two bridging 2,3-di­methyl­pyrazine ligands and two μ-1,1-bridg­ing chloride anions. Each of the two copper cations are linked by pairs of bridging chloride anions into dinuclear units that are further linked into layers via bridging 2,3-di­methyl­pyrazine coligands. These layers are stacked in such a way that channels are formed in which the disordered solvent mol­ecules are located. The topology of this network is completely different from that observed in the two polymorphic modifications of CuCl(2,3-di­methyl­pyrazine) reported in the literature [Jess & Näther (2006). Inorg. Chem. 45, 7446–7454]. Powder X-ray diffraction measurements reveal that the title compound is unstable and transforms immediately into an unknown crystalline phase.

The crystal structure of the title compound, hexa­aqua­nickel(II) dichloride–1,4,7,10,13,16-hexa­oxa­cyclo­octa­deca­ne–water (1/2/2), [Ni(H2O)6]Cl2·2C12H24O6·2H2O, is reported. The asymmetric unit contains half of the Ni(OH2)6 moiety with a formula of C12H32ClNi0.50O10 at 105 K and triclinic (P1) symmetry. The [Ni(OH2)6]2+ cation has close to ideal octa­hedral geometry with O—Ni—O bond angles that are within 3° of idealized values. The supra­molecular structure includes hydrogen bonding between the water ligands, 18-crown-6 mol­ecules, Cl− anions, and co-crystallized water solvent. Two crown ether mol­ecules flank the [Ni(OH2)6]2+ mol­ecule at the axial positions in a sandwich-like structure. The relatively symmetric hydrogen-bonding network is enabled by small Cl− counter-ions and likely influences the more idealized octa­hedral geometry of [Ni(OH2)6]2+.

Low-energy electron diffraction patterns contain precise information about the structure of the surface studied. However, retrieving the real space lattice periodicity from complex diffraction patterns is challenging, especially when the modeled patterns originate from superlattices with large unit cells composed of several symmetry-equivalent domains without a simple relation to the substrate. This work presents ProLEED Studio software, built to provide simple, intuitive and precise modeling of low-energy electron diffraction patterns. The interactive graphical user interface allows real-time modeling of experimental diffraction patterns, change of depicted diffraction spot intensities, visualization of different diffraction domains, and manipulation of any lattice points or diffraction spots. The visualization of unit cells, lattice vectors, grids and scale bars as well as the possibility of exporting ready-to-publish models in bitmap and vector formats significantly simplifies the modeling process and publishing of results.

Developing semiconductor devices requires a fast and reliable source of strain information with high spatial resolution and strain sensitivity. This work investigates the strain in an axially heterostructured 180 nm-diameter GaInP nanowire with InP segments of varying lengths down to 9 nm, simultaneously probing both materials. Scanning X-ray diffraction (XRD) is compared with Bragg projection ptychography (BPP), a fast single-projection method. BPP offers a sufficient spatial resolution to reveal fine details within the largest segments, unlike scanning XRD. The spatial resolution affects the quantitative accuracy of the strain maps, where BPP shows much-improved agreement with an elastic 3D finite element model compared with scanning XRD. The sensitivity of BPP to small deviations from the Bragg condition is systematically investigated. The experimental confirmation of the model suggests that the large lattice mismatch of 1.52% is accommodated without defects.

Fluctuation X-ray scattering (FXS) offers a complementary approach for nano- and bioparticle imaging with an X-ray free-electron laser (XFEL), by extracting structural information from correlations in scattered XFEL pulses. Here a workflow is presented for single-particle structure determination using FXS. The workflow includes procedures for extracting the rotational invariants from FXS patterns, performing structure reconstructions via iterative phasing of the invariants, and aligning and averaging multiple reconstructions. The reconstruction pipeline is implemented in the open-source software xFrame and its functionality is demonstrated on several simulated structures.

In addressing the challenges faced by laboratories and universities with limited (or no) cryo-electron microscopy (cryo-EM) infrastructure, the ESRF, in collaboration with the Grenoble Institute for Structural Biology (IBS), has implemented the cryo-EM Solution-to-Structure (SOS) pipeline. This inclusive process, spanning grid preparation to high-resolution data collection, covers single-particle analysis and cryo-electron tomography (cryo-ET). Accessible through a rolling access route, proposals undergo scientific merit and technical feasibility evaluations. Stringent feasibility criteria demand robust evidence of sample homogeneity. Two distinct entry points are offered: users can either submit purified protein samples for comprehensive processing or initiate the pipeline with already vitrified cryo-EM grids. The SOS pipeline integrates negative stain imaging (exclusive to protein samples) as a first quality step, followed by cryo-EM grid preparation, grid screening and preliminary data collection for single-particle analysis, or only the first two steps for cryo-ET. In both cases, if the screening steps are successfully completed, high-resolution data collection will be carried out using a Titan Krios microscope equipped with a latest-generation direct electron counting detector coupled to an energy filter. The SOS pipeline thus emerges as a comprehensive and efficient solution, further democratizing access to cryo-EM research.

This article describes a correction procedure for the removal of indirect background contributions to measured small-angle X-ray scattering patterns. The high scattering power of a sample in the ultra-small-angle region may serve as a secondary source for a window placed in front of the detector. The resulting secondary scattering appears as a sample-dependent background in the measured pattern that cannot be directly subtracted. This is an intricate problem in measurements at ultra-low angles, which can significantly reduce the useful dynamic range of detection. Two different procedures are presented to retrieve the real scattering profile of the sample.

Due to the ambiguity related to the lack of phase information, determining the physical parameters of multilayer thin films from measured neutron and X-ray reflectivity curves is, on a fundamental level, an underdetermined inverse problem. This ambiguity poses limitations on standard neural networks, constraining the range and number of considered parameters in previous machine learning solutions. To overcome this challenge, a novel training procedure has been designed which incorporates dynamic prior boundaries for each physical parameter as additional inputs to the neural network. In this manner, the neural network can be trained simultaneously on all well-posed subintervals of a larger parameter space in which the inverse problem is underdetermined. During inference, users can flexibly input their own prior knowledge about the physical system to constrain the neural network prediction to distinct target subintervals in the parameter space. The effectiveness of the method is demonstrated in various scenarios, including multilayer structures with a box model parameterization and a physics-inspired special parameterization of the scattering length density profile for a multilayer structure. In contrast to previous methods, this approach scales favourably when increasing the complexity of the inverse problem, working properly even for a five-layer multilayer model and a periodic multilayer model with up to 17 open parameters.

Recent developments in synchrotron radiation facilities have increased the amount of data generated during acquisitions considerably, requiring fast and efficient data processing techniques. Here, the application of dense neural networks (DNNs) to data treatment of X-ray diffraction computed tomography (XRD-CT) experiments is presented. Processing involves mapping the phases in a tomographic slice by predicting the phase fraction in each individual pixel. DNNs were trained on sets of calculated XRD patterns generated using a Python algorithm developed in-house. An initial Rietveld refinement of the tomographic slice sum pattern provides additional information (peak widths and integrated intensities for each phase) to improve the generation of simulated patterns and make them closer to real data. A grid search was used to optimize the network architecture and demonstrated that a single fully connected dense layer was sufficient to accurately determine phase proportions. This DNN was used on the XRD-CT acquisition of a mock-up and a historical sample of highly heterogeneous multi-layered decoration of a late medieval statue, called `applied brocade'. The phase maps predicted by the DNN were in good agreement with other methods, such as non-negative matrix factorization and serial Rietveld refinements performed with TOPAS, and outperformed them in terms of speed and efficiency. The method was evaluated by regenerating experimental patterns from predictions and using the R-weighted profile as the agreement factor. This assessment allowed us to confirm the accuracy of the results.

Portland cements (PCs) and cement blends are multiphase materials of different fineness, and quantitatively analysing their hydration pathways is very challenging. The dissolution (hydration) of the initial crystalline and amorphous phases must be determined, as well as the formation of labile (such as ettringite), reactive (such as portlandite) and amorphous (such as calcium silicate hydrate gel) components. The microstructural changes with hydration time must also be mapped out. To address this robustly and accurately, an innovative approach is being developed based on in situ measurements of pastes without any sample conditioning. Data are sequentially acquired by Mo Kα1 laboratory X-ray powder diffraction (LXRPD) and microtomography (µCT), where the same volume is scanned with time to reduce variability. Wide capillaries (2 mm in diameter) are key to avoid artefacts, e.g. self-desiccation, and to have excellent particle averaging. This methodology is tested in three cement paste samples: (i) a commercial PC 52.5 R, (ii) a blend of 80 wt% of this PC and 20 wt% quartz, to simulate an addition of supplementary cementitious materials, and (iii) a blend of 80 wt% PC and 20 wt% limestone, to simulate a limestone Portland cement. LXRPD data are acquired at 3 h and 1, 3, 7 and 28 days, and µCT data are collected at 12 h and 1, 3, 7 and 28 days. Later age data can also be easily acquired. In this methodology, the amounts of the crystalline phases are directly obtained from Rietveld analysis and the amorphous phase contents are obtained from mass-balance calculations. From the µCT study, and within the attained spatial resolution, three components (porosity, hydrated products and unhydrated cement particles) are determined. The analyses quantitatively demonstrate the filler effect of quartz and limestone in the hydration of alite and the calcium aluminate phases. Further hydration details are discussed.

With the emergence of ultrafast X-ray sources, interest in following fast processes in small molecules and macromolecules has increased. Most of the current research into ultrafast structural dynamics of macromolecules uses X-ray free-electron lasers. In parallel, small-scale laboratory-based laser-driven ultrafast X-ray sources are emerging. Continuous development of these sources is underway, and as a result many exciting applications are being reported. However, because of their low flux, such sources are not commonly used to study the structural dynamics of macromolecules. This article examines the feasibility of time-resolved powder diffraction of macromolecular microcrystals using a laboratory-scale laser-driven ultrafast X-ray source.

Characterization of crystallization processes in situ is of great importance to furthering knowledge of how nucleation and growth processes direct the assembly of organic and inorganic materials in solution and, critically, understanding the influence that these processes have on the final physico-chemical properties of the resulting solid form. With careful specification and design, as demonstrated here, it is now possible to bring combined X-ray diffraction and Raman spectroscopy, coupled to a range of fully integrated segmented and continuous flow platforms, to the laboratory environment for in situ data acquisition for timescales of the order of seconds. The facility used here (Flow-Xl) houses a diffractometer with a micro-focus Cu Kα rotating anode X-ray source and a 2D hybrid photon-counting detector, together with a Raman spectrometer with 532 and 785 nm lasers. An overview of the diffractometer and spectrometer setup is given, and current sample environments for flow crystallization are described. Commissioning experiments highlight the sensitivity of the two instruments for time-resolved in situ data collection of samples in flow. Finally, an example case study to monitor the batch crystallization of sodium sulfate from aqueous solution, by tracking both the solute and solution phase species as a function of time, highlights the applicability of such measurements in determining the kinetics associated with crystallization processes. This work illustrates that the Flow-Xl facility provides high-resolution time-resolved in situ structural phase information through diffraction data together with molecular-scale solution data through spectroscopy, which allows crystallization mechanisms and their associated kinetics to be analysed in a laboratory setting.

Metal–organic frameworks (MOFs) have garnered significant attention in recent years owing to their exceptional properties. Understanding the intricate relationship between the structure of a material and its properties is crucial for guiding the synthesis and application of these materials. (Scanning) Transmission electron microscopy (S)TEM imaging stands out as a powerful tool for structural characterization at the nanoscale, capable of detailing both periodic and aperiodic local structures. However, the high electron-beam sensitivity of MOFs presents substantial challenges in their structural characterization using (S)TEM. This paper summarizes the latest advancements in low-dose high-resolution (S)TEM imaging technology and its application in MOF material characterization. It covers aspects such as framework structure, defects, and surface and interface analysis, along with the distribution of guest molecules within MOFs. This review also discusses emerging technologies like electron ptychography and outlines several prospective research directions in this field.

This article presents a web-based framework to build a database without in-depth programming knowledge given a set of CIF dictionaries and a collection of CIFs. The framework consists of two main elements: the public site that displays the information contained in the CIFs in an ordered manner, and the restricted administrative site which defines how that information is stored, processed and, eventually, displayed. Thus, the web application allows users to easily explore, filter and access the data, download the original CIFs, and visualize the structures via JSmol. The modulated structures open database B-IncStrDB, the official International Union of Crystallography repository for this type of material and available through the Bilbao Crystallographic Server, has been re-implemented following the proposed framework.

The two most abundant CaCO3 polymorphs, calcite and aragonite, are universally recognized for the richness of their morphology to which different twins make relevant contributions. The epitaxial transformation calcite ↔ aragonite has long been debated. While the twinning has been thoroughly treated, the homo-epitaxy occurring within each of these minerals has, inexplicably, been overlooked to date, both experimentally and theoretically. Twinning can be deceptive to the point where it can be mistaken for homo-epitaxy, thus making the proposed growth mechanism in the crystal aggregate wrong. Within the present work, the first aim is a theoretical investigation of the homo-epitaxies among the three {10.4}-cleavage, {01.2}-steep and {01.8}-flat rhombohedra of calcite. Accordingly, the specific adhesion energies were calculated between facing crystal forms, unequivocally showing that the {01.2}/{01.8} homo-epitaxy competes with the generation of both {01.2} and {01.8} contact twins. Secondly, the calculation of the specific adhesion energy was extended to consider homo-epitaxy for the {10.4} rhombohedron. The two-dimensional geometric lattice coincidence has been tried for the {00.1} pinacoidal form as well.

Here, a morphologically based approach is used for the in situ characterization of 3D growth rates of facetted crystals from the solution phase. Crystal images of single crystals of the β-form of l-glutamic acid are captured in situ during their growth at a relative supersaturation of 1.05 using transmission optical microscopy. The crystal growth rates estimated for both the {101} capping and {021} prismatic faces through image processing are consistent with those determined using reflection light mode [Jiang, Ma, Hazlehurst, Ilett, Jackson, Hogg & Roberts (2024). Cryst. Growth Des. 24, 3277–3288]. The growth rate in the {010} face is, for the first time, estimated from the shadow widths of the {021} prismatic faces and found to be typically about half that of the {021} prismatic faces. Analysis of the 3D shape during growth reveals that the initial needle-like crystal morphology develops during the growth process to become more tabular, associated with the Zingg factor evolving from 2.9 to 1.7 (>1). The change in relative solution supersaturation during the growth process is estimated from calculations of the crystal volume, offering an alternative approach to determine this dynamically from visual observations.

A neutron time-of-flight (TOF) powder diffractometer with a continuous wide-angle array of detectors can be electronically focused to make a single pseudo-constant wavelength diffraction pattern, thus facilitating angle-dependent intensity corrections. The resulting powder diffraction peak profiles are affected by the neutron source emission profile and resemble the function currently used for TOF diffraction.

The upgrade of the Swiss Light Source, called SLS 2.0, necessitates comprehensive updates to all 18 user front ends. This upgrade is driven by the increased power of the synchrotron beam, reduced floor space, changing source points, new safety regulations and enhanced beam properties, including a brightness increase by up to a factor of 40. While some existing front-end components are being thoroughly refurbished and upgraded for safety reasons, other components, especially those designed to tailor the new synchrotron beam, are being completely rebuilt. These new designs feature innovative and enhanced cooling systems to manage the high-power load and meet new requirements such as mechanical stability and compact footprints.

The Australian Synchrotron Imaging and Medical Beamline (IMBL) uses a superconducting multipole wiggler (SCMPW) source, dual crystal Laue monochromator and 135 m propagation distance to enable imaging and computed tomography (CT) studies of large samples with mono-energetic radiation. This study aimed to quantify two methods for CT dose reduction: wiggler source operation at reduced magnetic field strength, and beam modulation with spatial filters placed upstream from the sample. Transmission measurements with copper were used to indirectly quantify the influence of third harmonic radiation. Operation at lower wiggler magnetic field strength reduces dose rates by an order of magnitude, and suppresses the influence of harmonic radiation, which is of significance near 30 keV. Beam shaping filters modulate the incident beam profile for near constant transmitted signal, and offer protection to radio-sensitive surface organs: the eye lens, thyroid and female breast. Their effect is to reduce the peripheral dose and the dose to the scanned volume by about 10% for biological samples of 35–50 mm diameter and by 20–30% for samples of up to 160 mm diameter. CT dosimetry results are presented as in-air measurements that are specific to the IMBL, and as ratios to in-air measurements that may be applied to other beamlines. As CT dose calculators for small animals are yet to be developed, results presented here and in a previous study may be used to estimate absorbed dose to organs near the surface and the isocentre.

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Source: Darren Aftahi 11/06/2024

Roth MKM analyst Darren Aftahi, in a research report published on November 5, 2024, maintained a Buy rating on Terawulf Inc. (WULF:NASDAQ) with a price target of US$7.50. The report follows TeraWulf's October production update and insights into its HPC capacity expansion plans.

Aftahi highlighted the company's HPC capacity development, stating, "WULF gained better insight into its supply chain for delivering ~72.5MW of HPC capacity by 2Q25, with the potential to generate ~US$90M in annualized revenue with US$60M+ in profit (exit run rate). Its 2.5MW concept building is now complete, and its 20MW facility is on schedule for 1Q25."

Regarding October's production metrics, the analyst noted, "WULF mined 150 BTC in October, up 7% m/m on a comparable basis to only Lake Mariner in September (140 BTC). The ending hash rate is now 8.1 EH/s (vs. 10) from the removal of Nautilus." He added that "machine efficiency is now 22 J/TH vs. the prior combined rate of ~24.6 J/TH."

The analyst observed operational improvements, commenting, "Avg. operating hash rate was ~6.8 or ~84%, slightly ahead of prior months (although reported in aggregate). Part of this is being driven by the accelerated replacement of older miners at Lake Mariner."

The report noted that upon reinstallation of damaged miners at Lake Mariner, the hash rate would increase to approximately 8.7 EH/s, though power cost per BTC increased about 5% month over month.

Roth MKM's valuation methodology is based on an EBITDA multiple approach. Aftahi explained, "We apply a ~24x multiple to our projected FY25 adj. EBITDA of ~US$120M to arrive at our price target of US$7.50."

The analyst outlined several risk factors, including Bitcoin price volatility, regulatory changes, unproven new business segments, capital requirements, weather impacts, competition, power contracts, and reliance on third-party suppliers.

In conclusion, Roth MKM's maintenance of their Buy rating and US$7.50 price target reflects confidence in TeraWulf's operational execution and growth potential in both Bitcoin mining and HPC capacity. The share price at the time of the report of US$5.98 represents a potential return of approximately 25.4% to the analyst's target price.

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Important Disclosures:

1. This article does not constitute investment advice and is not a solicitation for any investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Each reader is encouraged to consult with his or her personal financial adviser and perform their own comprehensive investment research. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company.

For additional disclosures, please click here.

Disclosures for Roth MKM, TeraWulf Inc., November 5, 2024

Regulation Analyst Certification ("Reg AC"): The research analyst primarily responsible for the content of this report certifies the following under Reg AC: I hereby certify that all views expressed in this report accurately reflect my personal views about the subject company or companies and its or their securities. I also certify that no part of my compensation was, is or will be, directly or indirectly, related to the specific recommendations or views expressed in this report.

Disclosures: Within the last twelve months, ROTH Capital Partners, or an affiliate to ROTH Capital Partners, has received compensation for investment banking services from TeraWulf, Inc.. Shares of TeraWulf, Inc. may be subject to the Securities and Exchange Commission's Penny Stock Rules, which may set forth sales practice requirements for certain low-priced securities.

Not Covered [NC]: ROTH Capital does not publish research or have an opinion about this security. ROTH Capital Partners, LLC expects to receive or intends to seek compensation for investment banking or other business relationships with the covered companies mentioned in this report in the next three months. The material, information and facts discussed in this report other than the information regarding ROTH Capital Partners, LLC and its affiliates, are from sources believed to be reliable, but are in no way guaranteed to be complete or accurate. This report should not be used as a complete analysis of the company, industry or security discussed in the report. Additional information is available upon request. This is not, however, an offer or solicitation of the securities discussed. Any opinions or estimates in this report are subject to change without notice. An investment in the stock may involve risks and uncertainties that could cause actual results to differ materially from the forward-looking statements. Additionally, an investment in the stock may involve a high degree of risk and may not be suitable for all investors. No part of this report may be reproduced in any form without the express written permission of ROTH. Copyright 2024. Member: FINRA/SIPC.

( Companies Mentioned: WULF:NASDAQ, )

File: Stephen Yan dresses as Deadpool at Comic-Con on July 19, 2013 in San Diego.; Credit: Sandy Huffaker/Getty Images

Hey, you! Yeah, you reading this! They're finally making a Deadpool movie!

If you like fourth-wall breaking, second-person addresses like the above, you may be in the target audience for the long-in-development "Deadpool," which Twentieth Century Fox announced Thursday that it was finally moving ahead with, according to the Hollywood Reporter. The studio announced a Feb. 12, 2016 release date for the film with Tim Miller set to direct the character who's served as both friend and foe to the X-Men.

The so-called "Merc with a Mouth" is a mercenary character created in the early '90s by artist Rob Liefeld, with Liefeld being an outspoken champion for the character. The character was part of the same Weapon X program that created Wolverine, with a similar healing factor power, but with a horribly scarred face he covers with a mask. He's also been played as crazy, which manifests itself as the character often knowing he's in a comic book and talking directly to the reader.

Ryan Reynolds has long been tied to the project, including playing a version of the character in the much-hated "X-Men Origins: Wolverine," but no deal has been made yet, according to the Reporter.

This follows footage leaking over the summer of a "Deadpool" test with Reynolds voicing the character in a CGI clip. Reynolds said in an interview in the Niagara Falls Review earlier this month that that it's unfortunate the footage leaked, "but who cares," because the positive response to the clip had helped push the film forward after being stuck in development hell.

"The movie has been in a state of limbo for a while. There was such an overpowering reaction to the footage, you sort of feel like, 'Oh, so we weren't crazy for our reasons for loving this character, for loving this role.' It's interesting to see the power of the Internet. It's awe-inspiring, actually," Reynolds told the Review. "And it's neat that Twitter and Facebook and Instagram can move mountains when used in the right way."

Watch the "Deadpool" test footage below (Warning: Contains some adult language):

Deadpool test footage

There'd also been debate about whether a movie would stay true to the character's outrageous attitude mixed with violence and go for an R rating, or whether it would go for a wider audience by staying at PG-13. Deadpool creator Liefeld has argued that the film would work just fine without restricting its audience with an R.

Liefeld tweet 1

Liefeld tweet 2

Liefeld told the Daily Superhero in a previous interview that the footage for the test was filmed three years ago, using motion capture over footage of Reynolds. He also talked up Miller as a director, noting that he directed the pre-credits scene for "Thor: The Dark World."

"Fox had released a relatively small budget for Tim to present his vision of the script written by Rhett Reese and Paul Wernick," Liefeld said. "The digital costume over Ryan Reynold's motion capture (Mo-Cap) performance was an approach they wanted to explore and they had a relatively small window to create this short so they opted to 'test' the look of a digital Deadpool costume over Ryan. I'm quite pleased at how it turned out, especially considering Baraka-Deadpool from Wolverine Origins."

Liefeld was referring to the transformation of Deadpool in "X-Men Origins: Wolverine" to a mouthless, pointy-limbed character in the film, which many fans argued took away what they loved most about Deadpool: His sense of humor. Liefeld also said he'd seen even more impressive sequences than the one that made its way online.

It's unclear whether this will tie in with the other X-Men films, but with the studio's recent attempt to tie together the "First Class" franchise with the older X-Men films in "Days of Future Past" and the character's long history of involvement with the X-Men and other related teams, it seems like a likely move.

The original cast of The Cosby Show. ; Credit: Frank Carroll/Associated Press

Thirty years ago, on September 20,"The Cosby Show" debuted on NBC and went on to dominate our screens for almost a decade.

The award-winning sitcom introduced us to the Huxtables, an upper-middle class black family  made up of Heathcliff, Clair and their five children. Plus a cast of ugly sweaters.

"The Cosby Show" covered familiar territory; from children getting body piercings, bad boyfriends and maintaining a long term relationship as parents with professional lives.

Speaking to Take Two's Alex Cohen, Mark Anthony Neal, professor of African and African American Studies at Duke University said "The Cosby Show" broke down racial stereotypes.

"It  really was the first program to present not just a middle class, or upper-middle class black family, but a professional family. Clair and Heathcliff Huxtable were educated, they had advanced degrees. It was an image we hadn't seen before."

From 1985 to 1990, "The Cosby Show" held the number one spot in the TV ratings war, appealing to audiences across color lines. Black viewers in particular welcomed a broader representation of African American life on screen, building on the success of shows such as "The Jeffersons", "Sanford and Son" and "Good Times". 

"Bill Cosby was very honest about the fact that when he conceived the character of Heathcliff Huxtable, he was looking for images that countered, say, Fred Sanford who was a junk dealer, or James Evans, Jr. in 'Good Times' who was always struggling to find a job. Bill Cosby wanted to bring a different view of the black family into the mix."

Despite its popularity, some people took issue with how "The Cosby Show" tackled race issues.

"It's not that black Americans didn't enjoy the show, but there were criticisms because it didn't explore the broader world of African Americans." says Professor Neal. "The Huxtable family became a stand in for the successes of the civil rights movement. It became the rationale that if the Huxtables can do it, why can't other African Americans do it?"

Today's media landscape is very different to the one "The Cosby Show" existed in. For this reason, says Professor Neal, its success has been difficult to replicate.

"Right after it went off the air, cable TV takes hold and we get this niche programming.  Many African American programs ended up on Fox, UPN and the WB, so there was no incentive for the major networks to do any Cosby-like programming with a black family at the center."

With the debut of ABC's "Blackish" on September 24, it's hoped this will go some way to fill the Cosby-shaped void. In the meantime there's always YouTube and re-runs. Just be thankful Heathcliff's ugly sweaters are a thing of the past.

Source: Leo Mariani 11/01/2024

Roth MKM analyst Leo Mariani, in a research report published on November 1, 2024, maintained a Buy rating on Matador Resources Co. (MTDR:NYSE) with a price target of US$68.00. The report follows the announcement that MTDR's EVP of Production Glenn Stetson purchased company shares in the open market.

Mariani highlighted the insider purchase, stating, "MTDR reported that EVP of Production Glenn Stetson bought 1,000 MTDR shares in the open market on October 30 for total proceeds of US$51,330 at an average price of US$51.33, which was 1.5% below yesterday's closing price of US$52.11."

The analyst explained his positive view on the company, noting, "We rate Matador Resources Co. (MTDR) a Buy based on the company's best-in-class production growth, strong inventory of wells, growing base dividend, and reasonable balance sheet."

Regarding Matador's operations, Mariani noted that the company has "192,000 net Permian acres, and most of its position is in the heart of the Delaware Basin. Its production mix is roughly 59% oil and 41% natural gas/NGLs." He also highlighted the company's midstream presence through its "51% ownership in San Mateo Midstream, which owns oil, gas, and water-gathering assets that are tied into MTDR's producing assets."

Roth MKM's valuation methodology is based on a multiple of Debt-Adjusted Cash Flow (DACF). Mariani explained, "Our US$68 price target for MTDR is based on a 4.2x multiple of our 2025 DACF estimate, which is based on US$70 WTI oil and US$3.10 HH gas."

The analyst also outlined several risk factors, including "slightly higher leverage than peers, completely unhedged in 2024; and acquisition risk given the company's propensity to do bolt-on M&A."

In conclusion, Roth MKM's maintenance of a Buy rating and US$68 price target reflects confidence in Matador Resources' operational excellence and growth potential in the Permian Basin. The share price at the time of the report of US$52.11 represents a potential return of approximately 30.5% to the analyst's target price, suggesting significant upside potential as the company continues to execute its development strategy.

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1. This article does not constitute investment advice and is not a solicitation for any investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Each reader is encouraged to consult with his or her personal financial adviser and perform their own comprehensive investment research. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company.

For additional disclosures, please click here.

Disclosures for Roth MKM, Matador Resources Co., November 1, 2024

Regulation Analyst Certification ("Reg AC"): The research analyst primarily responsible for the content of this report certifies the following under Reg AC: I hereby certify that all views expressed in this report accurately reflect my personal views about the subject company or companies and its or their securities. I also certify that no part of my compensation was, is or will be, directly or indirectly, related to the specific recommendations or views expressed in this report.

Disclosures: The price target and rating history for Matador Resources Co. prior to February 1, 2023 reflect MKM’s published opinion prior to the acquisition of MKM Partners, LLC by Roth Capital Partners, LLC. Within the last twelve months, ROTH Capital Partners, or an affiliate to ROTH Capital Partners, has received compensation for investment banking services from Matador Resources Co.. Within the last twelve months, ROTH Capital Partners, or an affiliate to ROTH Capital Partners, has managed or co-managed a public offering for Matador Resources Co.

Not Covered [NC]: ROTH Capital does not publish research or have an opinion about this security. ROTH Capital Partners, LLC expects to receive or intends to seek compensation for investment banking or other business relationships with the covered companies mentioned in this report in the next three months. The material, information and facts discussed in this report other than the information regarding ROTH Capital Partners, LLC and its affiliates, are from sources believed to be reliable, but are in no way guaranteed to be complete or accurate. This report should not be used as a complete analysis of the company, industry or security discussed in the report. Additional information is available upon request. This is not, however, an offer or solicitation of the securities discussed. Any opinions or estimates in this report are subject to change without notice. An investment in the stock may involve risks and uncertainties that could cause actual results to differ materially from the forward-looking statements. Additionally, an investment in the stock may involve a high degree of risk and may not be suitable for all investors. No part of this report may be reproduced in any form without the express written permission of ROTH. Copyright 2024. Member: FINRA/SIPC.

( Companies Mentioned: MTDR:NYSE, )

Source: Streetwise Reports 11/05/2024

Revolve Renewable Power Corp. (TSXV:REVV; OTCQB:REVVF) released its strongest financial results since going public in 2022, those for fiscal year 2024 (FY24) ended June 30, 2024, the company announced in a news release.

"FY24 marked significant progress for the company as it continues its transition to an owner and operator of renewable energy projects, incorporating a focus on building long-term recurring revenues and cash flow for the business," the release noted.

This company, headquartered in British Columbia, develops utility-scale solar, wind, hydro, and battery storage projects in North America. The Revolve Renewable Business Solutions division installs and operates sub-20-megawatt, behind-the-meter distributed generation assets.

FY24 revenue of US$6.7 million (US$6.7M) exceeded guidance by 35% and surpassed FY23 revenue by 509%. Significant contributors to total revenue for this latest fiscal year were deferred revenues and milestone payments of US$4.25M from the sale of the Bouse and Parker projects to ENGIE. Completion of the WindRiver Power Corp. acquisition in February added $671,738 of total revenue. In the future, WindRiver business is projected to generate recurring revenue of US$1.8M on a 12-month basis.

Adjusted EBITDA in FY24 also was up year over year (YOY), at US$2.7M versus US$1.5M of guidance and (US$2.1M) in FY23.

The gross margin in FY24 was strong at 96%. This was due to increased recurring revenues from the distributed generation portfolio, low operating costs of the rooftop solar projects therein, the addition of operating utility-scale projects in Canada, and sale proceeds from utility-scale projects in the U.S.

FY24 resulted in a net income of US$2.6M, whereas FY23 saw a net loss of US$2.3M.

As for the balance sheet, at FY24's end, Revolve had US$3.2M in cash. Total liabilities were US$10M, up from US$2.6M in FY23 due to nonrecourse debt taken on via the WindRiver acquisition plus additional loans granted by RE Royalties Ltd., a Canadian royalty finance company, throughout FY24.

Operational Progress Made

Operationally, in FY24, according to the release, Revolve generated 8,048,729 kilowatt-hours (8,048,729 kWh) of renewable energy, up 397% from 1,618,456 kWH the year before. The main drivers were continuing output from the company's operational distributed generation portfolio and power produced at the Box Springs wind farm.

During the 15 months between July 1, 2023, and Oct. 31, 2024, Revolve added of 76.1 megawatts (76.1 MW) net of development hydro projects in Canada through the WindRiver acquisition and 480 MW of new greenfield development projects in Canada and the U.S. These took the total of Revolve's utility-scale projects under development to 3,015 MW.

The company made significant progress on its 20 megawatt (20 MW)/80 MWh Vernal BESS battery storage project and 49.5 MW Primus wind projects, now in the late stage of development and expected to reach ready-to-build status at the end of 2025 (2025E).

Revolve is still building its two distributed generation assets in Mexico, totaling 3.45 MW. Permitting work continues on the 3 MW CHP project continues, and the final commissioning of the 450-KW-peak rooftop solar project is taking place.

The distributed generation project pipeline remains at about 150 MW, and efforts are ongoing to sign additional power purchase agreements for new projects from it.

Also, Revolve recently announced its acquisition of a 30-MW-peak solar development project in Alberta, Canada, and expects a 20-MW-peak first phase will be ready for construction by 2025E.

Independent Power Producer

Revolve is a revenue-generating, renewable-focused independent power producer formed in 2012 to capitalize on the growing global demand for renewable power, according to its October 2024 Corporate Presentation.

The company began as solely a developer of utility-scale projects, a line of business that provides investors access to higher returns. Currently, the company has two projects under construction, the ones in Mexico and 3,000-plus MW worth of projects in development in Canada, the U.S., and Mexico. To date, Revolve has developed and sold more than 1,550 MW of utility-scale projects and is now targeting 5,000 MW under development.

Today, Revolve is also an owner-operator of renewable energy distribution generation projects that provide recurring revenue and cash flow via long-term power purchase agreements. Currently, the portfolio contains 150-plus MW of generation projects in Canada and Mexico. The company will continue expanding this line of business through organic growth and mergers and acquisitions (M&A) activity.

Revolve's management team has a successful track record in taking renewable energy projects from greenfield to ready-to-build status and in selling them to large operators. Collectively, it has generated about US$23M in revenue historically from the sale of 1,550 MW of development assets and has raised US$10.3M in equity capital.

Significant Sector Growth Forecasted

The transition to net zero emissions continues driving the renewable energy industry after nearly 200 countries at the COP28 UN Climate Change Conference in December 2023 pledged to triple global capacity by the end of this decade. In a report last month, the International Energy Agency (IEA) forecasted global renewable capacity reaching almost 11,000 gigawatts (GW) by then, reflecting 2.7 times growth, falling short of the goal.

Solar Photovoltaic (PV) Power: Of the growth predicted for renewable energy during this period, solar photovoltaic power will make up 80% of it, according to the IEA, due to its increasing economic attractiveness in most countries.

"At the end of this decade, solar PV is set to become the largest renewable source, surpassing both wind and hydropower," the agency wrote. Hydropower currently is the top source worldwide.

Wind Power: Wind power will account for 15% of all forecasted renewable capacity growth, noted the IEA. This sector has suffered recently from macroeconomic factors and supply chain difficulties, but it is expected to recover. Global wind capacity is projected to expand between 2024 and 2029 at double the rate it grew between 2017 and 2023.

"Policy changes concerning auction design, permitting, and grid connection in Europe, the United States, India, and other emerging and developing economies are expected to enhance project bankability and help the wind sector recover from recent financial difficulties," the article noted.

Hydropower: As for hydropower, capacity is continuing to grow consistently, noted the IEA, due primarily to efforts by China, India, Africa and the Association of Southeast Asian Nations region.

In North America, the U.S. is expected to be the biggest market for hydropower, according to Mordor Intelligence. Between 2024 and 2029, the market is forecasted to expand at a compound annual growth rate of 1%, spurred by demand for renewable energy and investments in hydropower plants.

"The technological advancements in efficiency and decrease in the production cost of hydropower projects are expected to create ample opportunity for market players," the article noted.

The Catalysts: Results of Business as Usual

As Revolve continues effecting its growth strategies, numerous potential stock-boosting events should occur, according to its corporate presentation.

Catalysts resulting from ongoing efforts include further M&A transactions, signing additional power purchase agreements, and bringing new distributed generation projects online. wo increasing revenue and cash flow growth.

Specifically, the company reaching its goals of advancing 70 MW of the BESS and Wind projects to ready-to-build status as well as 30 MW of solar in Canada, in 2025. These have the potential to generate material revenue and add value.

Another catalyst is Revolve achieving ready-to-build status for its two wind projects in Mexico, the 103 MW El 24 and the 400 MW Presa Nueva. The company's ultimate goal with these assets is to partner on or sell them. [OWNERSHIP_CHART-10982]

Finally, payments toward the remaining US$45–55M balance still owed to Revolve regarding the ENGIE sale could boost its stock.

Ownership and Share Structure

About 60% of the company is owned by insiders and management, Revolve said.

Top shareholders include Joseph O'Farrell with 13.21%, Roger Norwich with 12.15%, the CEO and Director Stephen Dalton with 6.01%, President and Director Omar Bojorquez with 4.82%, and Jonathan Clare with 1.84%, according to Reuters and the company.

The rest is retail.

Revolve has a market cap of CA$17.96M. It has 63.04M outstanding shares and 38.75M free float traded shares. Its 52-week high and low are CA$0.50 and CA$0.21 per share, respectively.

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Important Disclosures:

1. As of the date of this article, officers and/or employees of Streetwise Reports LLC (including members of their household) own securities of Revolve Renewable Power Corp.
2. Doresa Banning wrote this article for Streetwise Reports LLC and provides services to Streetwise Reports as an independent contractor.
3. This article does not constitute investment advice and is not a solicitation for any investment. Streetwise Reports does not render general or specific investment advice and the information on Streetwise Reports should not be considered a recommendation to buy or sell any security. Each reader is encouraged to consult with his or her personal financial adviser and perform their own comprehensive investment research. By opening this page, each reader accepts and agrees to Streetwise Reports' terms of use and full legal disclaimer. Streetwise Reports does not endorse or recommend the business, products, services or securities of any company.

For additional disclosures, please click here.

( Companies Mentioned: TSXV:REVV;OTCQB:REVVF, )

Off-Ramp producer Queena Kim acts on behalf of millions of Angelenos. The meter didn't stand a chance.

; Credit: John Rabe/KPCC

Off-Ramp began eleven years ago, just as digital technology was beginning to overtake radio. No more cassette tape or mini-discs; host John and producer Queena Kim thought they could take on all of Los Angeles with two digital audio recorders and a different approach to public radio.

Short-handed as they were, John and Queena had to adopt slash-and-burn tactics to get each show produced on time. The majority of interviews were conducted in the field; at the homes, workplaces, and favorite hang-outs of their subjects (instead of waiting for guests to come to the station) and many of the stories were edited as simple two-way interviews with life in Southern California picked up as ambient, background noise. After all, a show called Off-Ramp had better be ready to brave some LA traffic.

At this juncture, John feels free to say what he has always wanted to, but hasn't for fear of self-aggrandizement: "I think we were trendsetters. I think Marketplace and NPR heard the stuff we were doing, and started doing stuff like it." Once again, Kim chalks it up to being in the right place at the right time technologically, and the two person team's willingness to break out of the old-school, public radio way writing a story: with a very clear sonic difference between studio narration and field audio.

Of course, it wasn't just Marantz recorders and minimal rewriting that gave Off-Ramp its flavor. There was a whole lot of weird spewing up out of Los Angeles during the show's formative years and Kim's tenure (2006-2010). She recalls covering a ten-theremin orchestra at Disney Hall, and the excitement of working on a show that let her (and the listeners, vicariously) do things she always wanted to do. "It was almost like having a free pass to the city."

In order to capture what was new and exciting, John and Queena both agree that it was absolutely vital to abandon the reporter's instinct for safely packaging the story ahead of time. John cites his editor at Minnesota Public Radio's philosophy, Mike Edgerly; "Go find what the story is, go out and explore and figure out what the story is. Don't figure it out at your desk first." The collaboration between John's ideas and Kim's sense of logistics formed a dialectic relationship, valuing the "third, better idea" over either of their original perspectives. In light of that, John says Queena Kim was the perfect person with whom to start Off-Ramp. 

This content is from Southern California Public Radio. View the original story at SCPR.org.

Brad and George Takei, the new typical American married couple.; Credit: John Rabe/Grant Wood/Michael Uhlenkott

UPDATE: “Allegiance” will be performed Feb. 21-April 1, 2018, at the Aratani Theater at the Japanese Cultural and Community Center in downtown L.A.'s Little Tokyo.

ORIGINAL STORY: In an intimate interview, George Takei tells Off-Ramp host John Rabe about crafting the Japanese-American internment camp history into compelling Broadway musical theater. "Allegiance," with Takei, Lea Salonga and Telly Leung, played at the Longacre Theater.

George Takei and his husband Brad were putting their house in mothballs when I arrived for our interview in August. They'd already been spending a lot of time in New York because of George's recurring role on "The Howard Stern Show," but now, with the Broadway opening of "Allegiance" just a couple months away, they were preparing to move for as long as the musical brings in the crowds.

While Brad went off to deal with the mundane domestic tasks around the move, I sat with George in their living room to talk about turning one of America's most shameful episodes — the internment of some 120,000 loyal Japanese-Americans during World War II — into a musical that could make it on the Broadway stage.

George, you just sent an email to your fans with the subject line: "I've Waited 7 Years to Send You this Email. Seven years!" Inside, you wrote: "Few things are as difficult and complex as taking a show to ‪Broadway‬. It's both thrilling and terrifying." What was terrifying?

"The terrifying part is, you've poured your passion, your energy, your resources ...  you make all that investment in that project, and then you're hoping the seats are going to be filled.That 'what if' is terrifying. But in San Diego, we had a sold-out run and broke their 77-year record. But now we're going to Broadway, and that same fear is there. Will they come? What will the critics say? Because it's life or death."

It took a long time just to get a Broadway theater.

"It took a long time to get a theater.You think there are a lot of Broadway theaters, but there are even more productions that want those chunks of New York real estate. So we thought we'd get in line. But then the other discovery we made is that the theater owners have relationships with grizzled old producers who have brought them a vast fortune with enormous hits, and they can cut in line. They have a track record. And so, 'will we ever get a theater' became a big question. But we have this time now — let's use it creatively, productively."

So, Takei says, the team tweaked the show, removing parts that didn't work didn't advance the story, inserting numbers that worked better and kept the story moving. They doubled down on social media, building and proving demand in the show.

"We have a Shubert theater (the Longacre), and Bob Wankel is head guy there, and I remember pouring my heart out, telling the story of my parents, hoping that touches. And he was understanding, but I understood his problem, too. Everybody is trying to get a theater and he has to make a good business decision and was initially skeptical. An internment camp musical? But music has the power to make an anguished painful situation even more moving, even more powerful. It hits you in the heart."

Highlights from "Allegiance" at the Old Globe in San Diego

This is your Broadway debut, right? Are you petrified?

"Yes, yes. I've done a lot of stage work, and I've done a lot of public speaking, but it's Broadway, and I'm a debutante... at 78 years old! And it's the critics, too. The New York Times, Ben Brantley. That's who I'm going to be facing, and so it's both exciting and absolutely filling me with ecstasy, but what makes it ecstatic is the fear."

For much more of our interview with George Takei, listen to the audio by clicking the arrow in the player at the top of the page ... and hear George Takei and John Rabe's duet of "Tiny Bubbles."

This content is from Southern California Public Radio. View the original story at SCPR.org.

Gay and bisexual men in England, Scotland, and Wales can now donate blood, plasma and platelets under certain circumstances without having to wait three months, the National Health Service announced this week.; Credit: Wilfredo Lee/AP

Gay and bisexual men in England, Scotland, and Wales can now donate blood, plasma and platelets under certain circumstances, the National Health Service announced this week in a momentous shift in policy for most of the U.K.

Beginning Monday, gay men in sexually active, monogamous relationships for at least three months can donate for the first time. The move reverses a policy that limited donor eligibility on perceived risks of contracting HIV/AIDs and other sexually transmitted infections.

The new rules come as the U.K. and other countries around the world report urgent, pandemic-induced blood supply issues.

Donor eligibility will now be based on each person's individual circumstances surrounding health, travel and sexual behaviors regardless of gender, according to the NHS. Potential donors will no longer be asked if they are a man who has had sex with another man, but they will be asked about recent sexual activity.

Anyone who has had the same sexual partner for the last three months can donate, the NHS said.

"Patient safety is at the heart of everything we do. This change is about switching around how we assess the risk of exposure to a sexual infection, so it is more tailored to the individual," said Ella Poppitt, Chief Nurse for blood donation at NHS Blood and Transplant, in a statement. "We screen all donations for evidence of significant infections, which goes hand-in-hand with donor selection to maintain the safety of blood sent to hospitals."

People who engage in anal sex with a new partner or multiple people or who have recently used PrEP or PEP (medication used to prevent HIV infection) will have to wait three months to donate - regardless of their gender.

Why did the U.K. make this change?

The NHS moved to alter its blood donation eligibility rules following a review by the FAIR (For the Assessment of Individualised Risk) steering group. The panel determined an individualized, gender-neutral approach to determining who can donate blood, platelets, and plasma is fairer and still maintains the safety of the U.K.'s blood supply.

The findings were accepted in full by the government last December.

Researchers will continue to monitor the impact of the donor selection changes for the next 12 months to determine if more changes are needed, NHS said.

What is the policy in the U.S.?

Despite efforts by advocates to change regulations in the U.S, the ability for gay and bisexual men to donate blood is still restricted.

A ban on gay and bisexual blood donors has been in effect since the early 1980s when fears about HIV/AIDS were widespread.

The Food and Drug Administration's current policy states a man who has sex with another man in the previous three months can't donate. Federal rules previously made such donors wait 12 months before giving blood, but due to low blood supplies during the pandemic the federal government changed the policy in April.

The Red Cross said they are participating in a pilot study funded by the FDA using behavior-based health history questionnaires, similar to those used in the U.K.

This content is from Southern California Public Radio. View the original story at SCPR.org.

A teen gets a dose of Pfizer's COVID-19 vaccine at Holtz Children's Hospital in Miami on May 18. Nearly 7 million U.S. teens and pre-teens (ages 12 through 17) have received at least one dose of a COVID-19 vaccine, so far, the CDC says.; Credit: Eva Marie Uzcategui/Bloomberg via Getty Images

It's been a little more than a month since adolescents as young as 12 became eligible in the United States to receive the Pfizer vaccine against COVID-19, and nearly all reports have been positive: The vaccine is very effective in this age group, and the vast majority of kids experience mild side effects, if any — the same sore arm or mild flu-like symptoms seen among adults who get the shot.

The Centers for Disease Control and Prevention has recommended that everyone 12-years-old and older get vaccinated against COVID-19, and the rollout is well underway: According to the CDC, nearly 7 million U.S. teens and pre-teens (ages 12 through 17) have received at least one dose of a COVID-19 vaccine, so far.

Still, soon after the FDA authorized the use of Pfizer's vaccine in young people, federal agencies began receiving reports of mild chest pain or other signs of possible heart inflammation (known as myocarditis) in a very small percentage of recently vaccinated teens.

CDC director Rochelle Walensky said at a White House briefing Friday that there have been more than 300 cases of heart inflammation reported among more than 20 million teens and young adults who have received one of the vaccines made by Moderna or Pfizer. She said that in the "vast majority" of cases, the inflammation went away.

An expert advisory committee to the health agency is expected to review the cases in more depth at a meeting Friday.

So, in the meantime, should parents of teens hesitate to have their kids vaccinated against COVID-19? Vaccine experts and the American Academy of Pediatrics say no, don't hesitate. It's good for doctors and patients to be aware that there might be a connection between the mRNA vaccines and heart inflammation, and to report to their pediatrician anything they see in that first week after vaccination. But it is also important, the CDC notes, to recognize that even if this does turn out to be an extremely rare side effect of the vaccine, "most patients who received care responded well to medicine and rest and quickly felt better." And the serious risks of COVID -19 — even for young healthy people — outweigh the risks of any possible side effects from the vaccine. Here are some questions you may have, and what's known:

What exactly is myocarditis?

Myocarditis is an inflammation of the heart muscle, and pericarditis, also being investigated, is an inflammation of the sac around the heart.

Long before the pandemic, thousands of cases of myocarditis were diagnosed in the U.S. and around the world each year, often triggered by the body's immune response to infections. SARS-CoV-2 can trigger it, and so can cold viruses, and staph and strep and HIV. Other causes include toxins and allergies.

Symptoms include chest pain and shortness of breath. It's often mild enough to go unnoticed, but a full-blown case in adults can cause arrhythmias and heart failure that require careful treatment with multiple medications, and several months of strict rest. In a case study of seven teenagers who got myocarditis following vaccination published last week in the journal Pediatrics, all seven got better after routine treatment with anti-inflammatory drugs.

Pediatric cardiologist Dr. Stuart Berger of the Northwestern University Feinberg School of Medicine, a spokesperson for the American Academy of Pediatrics, says vaccine-related myocarditis in teens is not all that worrisome. "Although they appear with some symptoms of chest pain, and maybe some findings on EKGs, all of the cases we've seen have been on the mild end of the spectrum," he says.

So, what's the concern?

Several hundred reports about the inflammation have been filed with the federal government's Vaccine Adverse Event Reporting System (VAERS); that's a repository of reports sent in by health professionals and patients about any health events they spot in the hours or days after vaccinations. Many of the events reported turn out to be coincidental — not caused by a vaccine. The database is just meant as a starting point for further investigation and not proof of cause and effect. But as NPR's Geoff Brumfiel noted this week, "when millions of people are vaccinated within a short period, the total number of these reported events can look big."

That said, anecdotes reported by doctors in medical journals and reports to VAERS suggest that both of the mRNA vaccines authorized for use in the U.S. — the Pfizer and Moderna vaccines — might slightly increase the incidence of myocarditis in young people. In 2003, a report in the New England Journal of Medicine estimated the background incidence of myocarditis to be 1.13 cases in 100,000 children per year.

Paul Offit, professor of pediatrics at the Children's Hospital of Philadelphia and a member of a Food and Drug Administration vaccine advisory committee says there likely is a causal link between the heart inflammation some doctors are seeing in these teens and the second dose of vaccine. "I think it's real," he says, but hastens to add that the effect is exceedingly small – based on the data collected so far, maybe one in 50,000 vaccinees between the ages of 16 and 39. "And the good news is at least so far it looks to be transient and self-resolving."

Still, maybe I should wait to get my teen vaccinated and see how this plays out?

Uhm, no, according to several vaccine experts contacted by NPR. And this is where a little math comes in handy.

"Take a stadium full of 100,000 people between the ages of 16 and 39, which is the subset that appears to be at greater risk," Offit says. "Vaccinate all of them, and two might get myocarditis." But if you don't vaccinate any of the 100,000, he estimates that about 1,300 would eventually get COVID-19. And those numbers are likely to increase this winter.

About one in 1,000 children who get COVID-19 have gone on to develop a condition called MIS-C (multisystem inflammatory syndrome in children), says Offit, and most of those kids have had some level of myocarditis. In addition, the new coronavirus has directly caused myocarditis in some children and adults. Which of the two stadiums in Offit's metaphor would have more cases of myocarditis — the vaccinated children or unvaccinated kids — is not known precisely. But Offit says he suspects it would be the unvaccinated group. And there's no doubt that 1,000 unvaccinated children would suffer more COVID-19-related illnesses. "A choice not to get a vaccine is not a choice to avoid myocarditis," he says. "It's a choice to take a different risk — and I would argue a more serious one" — of developing a bad case of COVID-19 or long-COVID or COVID-caused myocarditis.

Are the experts advising their own kids in this age group to get vaccinated?

Yes. "I understand people having concerns," says Dr. Judith Guzman-Cottrill. She's a parent and professor of pediatric infectious diseases at the Oregon Health and Science University, as well as the senior author on a small study that came out this month in the journal Pediatrics. In the report, Guzman-Cottrill and her colleagues analyzed the cases of seven boys around the country who developed myocarditis within four days of receiving the Pfizer-BioNTech vaccine.

She and her family recently faced the vaccination decision for her own 13-year-old daughter — and said a whole-hearted yes to the shot.

Guzman-Cottrill suspects there may turn out to be a slightly increased risk of heart inflammation from vaccination in young people, but she and her co-authors note in the Pediatrics report that a direct cause-and-effect connection — even in these seven cases — has yet to be established. And she's impressed that despite the millions of doses that have so far been delivered to teens, no clear and serious post-vaccination problems have shown up. "The emergency departments and urgent care clinics are not filled with teenagers complaining of chest pain," she says.

She's treated unvaccinated teens who developed severe myocarditis from an infection with the COVID-19 virus, and others who developed COVID-19 pneumonia and respiratory failure. Seeing those teens struggle — teens who lacked the powerful immune protection the vaccine provides — was enough for her to suggest vaccination to her daughter, who got her second vaccination earlier this week.

"She saw it as a pathway back to a normal post pandemic life," Guzman-Cottrill says.

And that's where public health comes in. "We really need a highly vaccinated student body when kids return to the classroom this fall," says Guzman-Cottrill, "so we don't see surges in COVID-19 cases."

Joanne Silberner, a former health policy correspondent for NPR, is a freelance journalist living in Seattle.

This content is from Southern California Public Radio. View the original story at SCPR.org.

Moderna says recently completed studies have found its vaccine to have a neutralizing effect against all COVID-19 variants tested, including the delta variant.; Credit: Fred Tanneau/AFP via Getty Images

Studies have found that Moderna's COVID-19 vaccine is effective against several variants of concern, including the delta variant, the biotech company announced.

Moderna said Tuesday that recently completed studies have found the vaccine to have a neutralizing effect against all COVID-19 variants tested, including the beta, delta, eta and kappa variants.

While still highly effective against the delta variant, the study showed the vaccine was less effective against it and certain other variants than against the original strain of the virus.

The antibody response against the delta variant was about two times weaker than against the ancestral strain of the virus.

The news echoes other findings that the Moderna and Pfizer vaccines are highly effective against the delta variant. A study published this month in Nature found that Pfizer's vaccine was able to neutralize variants including delta, though at somewhat reduced strength.

"These new data are encouraging and reinforce our belief that the Moderna COVID-19 Vaccine should remain protective against newly detected variants," Stéphane Bancel, Moderna's chief executive officer, said in a statement. "These findings highlight the importance of continuing to vaccinate populations with an effective primary series vaccine."

The company also said it is developing a booster candidate: a 50-50 mix of its currently authorized COVID-19 vaccine and another messenger RNA vaccine it has developed.

The delta variant is spreading fast

The delta variant is the fast-moving form of the coronavirus that is now found in 96 countries, including the United States.

Last week, Dr. Anthony Fauci of the National Institutes of Health said the delta variant is "currently the greatest threat in the U.S. to our attempt to eliminate COVID-19," noting that the proportion of infections being caused by the variant is doubling every two weeks.

The delta variant is now infecting at least 1 out of every 5 people who get the virus in the United States. In some sections of the country, the variant is already far more common, particularly in parts of the Midwest and West. At its current pace, the delta variant is expected to be the dominant virus in the U.S. within weeks.

Dr. Maria Van Kerkhove, an infectious disease expert at the World Health Organization, called the delta variant "incredibly transmissible."

"These viruses are becoming more fit. The virus is evolving, and this is natural," she told NPR's Morning Edition. "It's more transmissible than the alpha variant, so we need to just do all we can to prevent as many infections as we can and do what we can do to reduce the spread."

This content is from Southern California Public Radio. View the original story at SCPR.org.

People rest while riding a Los Angeles Metro Rail train amid the coronavirus pandemic on April 1, 2020 in Los Angeles, California.; Credit: Mario Tama/Getty Images

Despite the racial reckoning going on in America right now, and despite the fact that attitudes towards race, inclusion and representation are different now than they were 30 years ago, new research from UC Berkeley shows that a large majority of American metro areas are more segregated now than they were in 1990. The new report from Berkeley’s Institute covers a number of topic areas, but among the key findings were from the national segregation report component of the project, which found Los Angeles to be the sixth-most segregated metro area with more than 200,000 people.

Today on AirTalk, we’ll talk with the lead researcher on the new report and a local historian to talk about how we see the findings of the report play out in Southern California.

Guests:

Stephen Menendian, assistant director and director of research at the Othering & Belonging Institute at UC Berkeley, which works to identify and eliminate the barriers to an inclusive, just, and sustainable society in order to create transformative change; he tweets @SMenendian

Eric Avila, professor of history, urban planning, and Chicano/a studies at UCLA

This content is from Southern California Public Radio. View the original story at SCPR.org.