A film formation apparatus and a film-formed workpiece manufacturing method which are capable of forming a film with a uniform thickness on a workpiece like a three-dimensional object that includes a plurality of surfaces by a simple structure are provided. A film formation apparatus includes a target 21 that is a film formation material including a plane SU3, a power supply unit 3 applying power to the target 21, a rotating unit 4 rotating a workpiece W that is a film formation object around a rotation axis AX1, and a revolving unit 5 revolving the rotating unit 4 around a revolution axis AX2 separate from the rotation axis AX1 to repeatedly make the workpiece W to come close to and move apart from the target 21.

The present invention is to provide a photocatalyst electrode for water decomposition exhibiting a high photocurrent density and having reduced dark current. The photocatalyst electrode for water decomposition of the present invention has a photocatalyst layer and a current collector layer that is formed by a vapor deposition method and is disposed on the photocatalyst layer.

A potentiostat/galvanostat employs a controller for providing digital control signals to a digital-to-analog converter (DAC) that generates an analog output signal in response to digital control signals. A high current driver produces a high current output in response to the analog output signal from the DAC. A high current monitor monitors the output from the high current driver to produce a feedback signal for the high current driver to control the current produced by the high current driver and to produce an output dependent on the current supplied from the high current driver for monitoring by the controller. A counter electrode contact for a counter electrode is connected with the output of the high current monitor. A working electrode contact for a working electrode is electrically connected with a fixed stable voltage potential to enable electrochemical analysis of material between the counter electrode and the working electrode. A low current driver produces a low current range output in response to an analog output signal from the DAC. A low current monitor monitors the working electrode contact to detect current at the working electrode contact to supply an output dependent on the current detected for monitoring by the controller and for providing a feedback signal to the low current driver in order to control the output of the low current driver to control current between the counter electrode contact and the working electrode contact.

In one example embodiment, a system for treating a tissue site is disclosed comprising a dressing adapted to contact the tissue site and provide a fluid seal between a therapeutic environment and a local external environment, and a solution source fluidly coupled to the dressing and adapted to deliver an antimicrobial solution comprising a peroxy α-keto carboxylic acid, such as peroxy pyruvic acid, to the tissue interface. The system may further comprise a negative-pressure source fluidly coupled to the dressing and adapted to provide negative pressure to the therapeutic environment after delivery of the antimicrobial fluid to the therapeutic environment. In another example embodiment, a method for treating a tissue site is disclosed comprising positioning a tissue interface to contact the tissue site, covering the tissue interface and the tissue site with a drape to provide a fluid seal between the therapeutic environment and the local external environment, and delivering an antimicrobial solution comprising peroxy α-keto carboxylic acid to the therapeutic environment before providing negative pressure to the therapeutic environment.

Exemplary embodiments provide wearable automatic injection devices for providing an injection of a therapeutic agent into a patient. The wearable automatic injection device includes a housing having a patient contact portion securable to the patient, an injection needle for insertion into the patient, and a prefilled syringe assembly for holding the therapeutic agent. The prefilled syringe assembly includes a distal stopper and a proximal stopper penetrated by a penetrating needle. The penetrating needle is in fluid communication with the patient injection needle.

An infusion pump system providing therapy to a patient in a closed-loop or semi-closed loop mode can safely automatically revert to open-loop therapy. The system stores a default open-loop basal rate profile in memory. The system also continually tracks the insulin on board for the patient over a plurality of closed-loop therapy intervals. When an error or event occurs requiring reversion to open-loop therapy, the system automatically provides therapy according to the open-loop basal rate profile and the tracked insulin on board amount.

An injection device, method, and system for drug delivery includes a primary container for storing a drug, the container having a stopper movably disposed in the container for expelling the drug, an injection drive mechanism comprising a plunger for acting on the stopper and an energy source for exerting a force on the plunger to cause the plunger to act on the stopper to expel the drug, the force causing the plunger to accelerate to a velocity prior to acting on the stopper, and a damping mechanism for reducing the velocity of the plunger prior to acting on the stopper. The damping mechanism can include a dashpot or an energy absorbing material associated with the plunger. Alternatively or additionally, the damping mechanisms can include absorbing material disposed between support members of an outer casing of the injection device and the primary container.

A needle tip for an injection device includes a body having a front portion, a back portion configured to be removably connected to the pre-loaded injection device, and a wall separating the front and back portions. A hollow needle has a first piercing portion projecting back from the separating wall and a second piercing portion projecting forward from the separating wall. A safety shield that is axially movable relative to the body at least between an initial position, a retracted position, and a post use locking position. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.

To enable a user to readily determine the gauge of the needle of a needle assembly that has a base and a needle protective housing pivotably attached thereto, the needle assembly is injection molded from a color coded molding material which color was preassigned to correspond to the gauge of the needle. As a result, both the base and the protective housing of the needle assembly have—the same specific color, and reflect or provide an indication of the given gauge of the needle. The needle sheath that covers the needle prior to use may be made of a plastics material that may be clear, or have the same or a different color than that of the needle assembly. The gauge of the needle of a fixed needle syringe could also be ascertained by its color coded needle protective housing. Color coded markings that correspond to the gauge of the needle may also be printed onto the syringe barrel of the fixed needle syringe.

The invention includes novel devices and methods for inhibiting or preventing colonization of fluid flow networks by bacteria that have upstream surface motility. In certain aspects, the devices and methods of the invention prevent or minimize undesirable bacterial colonization of medical devices and/or treat or prevent bacterial infections.

Disclosed herein are methods for treating solid mass tumors with direct delivery of an anti-tumor immunotherapeutic agent to the tumor site. In one aspect, this invention encompasses methods of treating solid mass tumors by direct microinjection via a microcatheter of an anti-tumor immunotherapeutic agent into the microvasculature leading into tumor thereby providing high levels of contact with the tumor while minimizing the degree of systemic buildup of the immunotherapeutic agent.

Pressure sensing guidewires are disclosed. The pressure sensing guidewires may include a tubular member having a proximal portion and a distal portion. The distal portion may have a plurality of slots formed therein. The distal portion may have a first wall thickness along a first region and a second wall thickness smaller than the first wall thickness along a second region. A pressure sensor may be disposed within the distal portion of the tubular member and housed within the second region. An anti-thrombogenic coating may be disposed on an inner surface, an outer surface, or both of the second region of the distal portion of the tubular member.

A catheter includes a catheter body having a proximal end, a beveled distal end, and a lumen therethrough. The beveled distal end defines an elliptical port for releasing contrast or other media through the lumen and from the elliptical port. The catheter may also be used delivering devices or for aspirating or extracting materials from the vasculature or other body lumens. A fixed guidewire extends distally from the distal end of the catheter body, typically from the distal-most edge of the elliptical port. The fixed wire is typically malleable so that it can be manually formed into a desired shape. The elliptical port may be flat or concave.

Systems and methods for longevity, anti-aging, fatigue management, obesity, weight loss, weight management, delivery of nutraceuticals, and treating hyperglycemia, Alzheimer's disease, sleep disorders, Parkinson's disease, Attention Deficit Disorder and nicotine addiction involve synchronizing and tailoring the administration of nutraceuticals, medications and other substances in accordance with the body's natural circadian rhythms, meal times and other factors. Improved control of blood glucose levels, extended alertness, and weight control, and counteracting of disease symptoms when they are at their worst are possible. An automated, pre-programmable transdermal administration system is used to provide pulsed doses of medications, pharmaceuticals, hormones, neuropeptides, anorexigens, pro-drugs, stimulants, nutraceuticals, phytochemicals, phytonutrients, enzymes, antioxidants, essential oils, fatty acids, minerals, vitamins, amino acids, coenzymes, or other physiological active ingredient or precursor. The system can utilize a pump, pressurized reservoir, a system for removing depleted carrier solution, or other modulated dispensing actuator, in conjunction with porous membranes or micro-fabricated structures.

The present disclosure is directed to a medical port drainage assembly that includes a port component and a replaceable catheter. The port component includes a tube having a proximal end, a distal end, and tube walls defining a catheter access lumen. A head component is located on a proximal end of the tube and an assembly retention element is located on a distal end of the tube. The head component is deployed outside the patient's body and defines an opening to the catheter access lumen. The assembly retention element is deployed within a lumen of the patient's body. The port component includes a valve assembly which may be a single valve (e.g., a duckbill valve) or a system of valves. The port component also includes a connector for coupling and decoupling the replaceable catheter to the port component.

A wheel speed sensor for a motor vehicle can be supplied with an operating voltage by a control device. The control device has a load resistance with a load resistance value. An operating voltage can be at a voltage input by the control device. An electrical circuit is designed to determine a turn-on or a turn-off voltage value according to the load resistance value. An operation control is designed to transfer the wheel speed sensor into a normal operation using the operating voltage, when the turn-on voltage value is exceeded, and to transfer the wheel speed sensor into an emergency operation using the operating voltage, when a turn-off voltage value is not met. In emergency operation only a low constant signal level is emitted.

A branch current monitor that includes reconfiguration.

A system for configuration of power meters.

An electronic arrangement and method for providing a signal characterized by reduced phase noise having a signal source for providing a stimulus signal, a modulator coupled to the signal source for generating a modulated signal as function of the stimulus signal and a local oscillator signal, and a mixer combining the stimulus and modulated signals to generate a mixed signal that includes a component characterized by a mathematical difference of the stimulus signal and the modulated signal. The modulated signal is substantially identical to the stimulus signal and offset by a frequency of the local oscillator signal, so that the difference component of the mixed signal results in a local oscillator signal wherein the stimulus signal phase noise generated by the signal source has been mathematically cancelled.

A vector network analyzer (VNA) for analyzing the response of a device under test (DUT), the VNA comprising a plurality of VNA ports configured to be connected to the DUT; a plurality of source ports configured to be connected to the VNA ports; a plurality of couplers for coupling a plurality of coupled signals, wherein said plurality of coupled signals are combined to provide a sum signal; and a receiver configured to receive said forward sum signal.

A method for preparing an object to be tested, having a given relative permittivity, intended to be illuminated by an incident electromagnetic wave. The method includes: providing a part including a cavity for housing the object and at least one extension element made from a material having a relative permittivity that is preferably equal to that of the object, the extension element at least partially delimiting the cavity and extending to either side of the cavity in a passage direction of the cavity, over a length at least equal, on either side of the cavity, to one third of the length of the cavity in the passage direction, and placing the object in the cavity, such that the object is in contact with the extension element in the passage direction.

The invention relates to a high-voltage dry apparatus having a semiconductor layer (2) covered by a metal screen (3), this screen (3) being eliminated so as to expose this semiconductor layer (2) over a length, this cable being connected to an element of equipment having an outer envelope (6) mechanically connected to said screen. According to the invention, an electronic monitoring arrangement (20) is contained within said envelope (6), this electronic arrangement (20) being electrically connected to an electrical power supply arrangement (21) surrounding said semiconductor layer (2) and to the metal screen (3) of said cable on either side of said length of the exposed semiconductor layer.

A probe card, a wafer testing system and a wafer testing method are provided. The wafer testing system includes a wafer holder and a probe card. A wafer is held on the wafer holder, and testing pads are formed on the wafer, in which the testing pads are arranged along a test straight line. The probe card includes probes each of which includes an arm portion and a tip portion. An included angle between the test straight line and an extension of a projection line of the arm portion onto the wafer ranges from about 40 degrees to about 55 degrees.

Test measurements on a utility power device by a switch matrix apparatus and a common voltage source as separate devices is performed. Through the switch matrix apparatus, the common voltage source selectively sends a first high voltage signal via a first lead to a first terminal of the utility power device, measures a first corresponding signal returned via a second lead of the switch matrix apparatus from a second terminal of the utility power device. While the first lead and the second lead of the switch matrix apparatus remain electrically coupled to the first and the second terminal of the utility power device, a second high voltage signal is selectively sent via the second lead to the second terminal of the utility power device, and a second corresponding signal returned from the first terminal of the utility power device via the first lead of the switch matrix apparatus is measured.

Disclosed is a low fly height in-plane magnetic image sensor chip. This sensor chip comprises a Si substrate with a pit on the surface, a magnetoresistive sensor, and an insulating layer. The magnetoresistive sensor is located on the bottom surface of the pit in the Si substrate. The insulating layer is located above the magnetoresistive sensor. The magnetic image surface detected during operation is coplaner or parallel with the surface of the Si substrate surface. The input and output ends of the magnetoresistive sensor are connected with leads directly, or bonded with leads through pads, or through a conducting post and pads to form connections. And the flying height of the leads is lower than the height of the surface of the Si substrate. This technical solution has several advantages, such as compact structure, high output signal, and direct contact with the magnetic image.

A universal, modular, temperature controlled MRI phantom for calibration and validation for anisotropic and isotropic imaging comprises an outer insulating shell configured to be received within an MRI chamber; an inner shell received within the outer insulating shell; a fluid conduits adjacent the inner shell for receiving temperature controlling fluid or gas cycling there-through; and a series of stacked layers of frames containing test points for the MRI phantom, each layer including at least one fiducial and including at least some anisotropic imaging test points in at least one frame and at least one isotropic imaging test point in at least one frame. The anisotropic imaging comprises hollow tubular textile fibers, wherein each hollow tubular fiber has an outer diameter of less than 50 microns and an inner diameter of less than 20 microns, wherein at least some hollow tubular fibers are filled with a fluid.

A system for calibration of power meters.

A measurement while drilling (MWD) system for use in a drilling string, the MWD system comprises: a resistivity module that is configured to generate resistivity information about a resistivity of a formation that is drilled by the drilling string; a near bit sub that is configured to generate inclination information about an inclination of a drill bit of the drilling string; a MWD module; a first wireless communication module that is configured to wirelessly send the resistivity information from the resistivity module to the MWD module; a second wireless communication module that is configured to wirelessly send inclination information from the near bit sub module to the MWD module; and wherein the MWD module is configured to participate in a transmission of the inclination information and the resistivity information towards an upper surface of the formation.

A power control apparatus according to an embodiment includes an acquisition unit and a determination unit. The acquisition unit acquires information relating to a voltage and an electric current of a chargeable/dischargeable secondary battery during charging/discharging. The determination unit determines a maximum current of the secondary battery during charging on the basis of the information acquired by the acquisition unit so that the voltage of the secondary battery does not exceed a predetermined voltage.

A first-half combustion period, for example, is estimated/evaluated, with a required accuracy, more simply than the conventional art, while reducing man-hours to produce a heat generation rate waveform of an internal combustion engine. Within a combustion period of an air-fuel mixture, a period from an ignition time FA to a heat generation rate maximum time dQpeakA where the heat generation rate is maximum is defined as the first-half combustion period a that is one of characteristic values of the heat generation rate waveform. The first-half combustion period a is estimated based on an in-cylinder volume at the heat generation rate maximum time, and furthermore by being corrected using an exponential function of the engine rotation speed with a value depending on a tumble ratio as exponent. Thus, the heat generation rate waveform is produced using the estimated first-half combustion period a.

The present disclosure relates to internal combustion engines in general. Some embodiments of the teaching may include valve units for use in a fuel tank system of an internal combustion engine having a fuel tank and a storage element for temporary storage of hydrocarbons, wherein the fuel tank and the storage element are connected together such that the hydrocarbons which gasify out of a fuel in the fuel tank are stored in the storage element. They may include a purge air pump connected to the storage element and conveying fresh air to the storage element, thereby releasing the stored hydrocarbons and supplying them to a combustion chamber of the internal combustion engine and a movable adjustment element with at least two positions. The first position may connect a pressure side of the purge air pump to a first line and a suction side of the purge air pump to a second line. The second position may connect the pressure side to the second line and the suction side to the first line.

Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.

A gyroscope includes a substrate, a first structure, a second structure and a third structure elastically coupled to the substrate and movable along a first axis. The first and second structure are arranged at opposite sides of the third structure with respect to the first axis A driving system is configured to oscillate the first and second structure along the first axis in phase with one another and in phase opposition with the third structure. The first, second and third structure are provided with respective sets of sensing electrodes, configured to be displaced along a second axis perpendicular to the first axis in response to rotations of the substrate about a third axis perpendicular to the first axis and to the second axis.

A flow speed measurement method includes conducting a heat exchange at a prescribed part of a surface of a pipe, the flow speed measurement method further includes measuring a temperature distribution in a pipe-axis-direction on the surface of the pipe in a case that the heat exchange has been conducted at the prescribed part, and the flow speed measurement method further includes determining a flow speed of a thermal fluid flowing inside the pipe, based on the temperature distribution measured.

The invention relates to a flow sensor (1), comprising: a semiconductor module (2) on which a temperature sensing means (13a, 13b) and a heat source (12) are arranged, a flow channel (6) for guiding the fluid medium in a flow direction (D), and a wall (W) delimiting the flow channel, wherein said heat source (12) and said temperature sensing means (13a, 13b) are configured such that they are in thermal contact with said wall (W). According to the invention, said wall (W) comprises a glass member (4) and a metal member (3a), wherein the glass member (4) is connected to the metal member (3a).

A first detection electrode that outputs a first flow rate signal and a second detection electrode that outputs a second flow rate signal, a differential circuit that outputs a differential flow rate signal obtained by obtaining a difference between the first flow rate signal and the second flow rate signal, an AC signal generation circuit that causes a first AC current to flow between the first detection electrode and the ground electrode and causes a second AC current with a reverse phase at the same frequency as that of the first AC current to flow between the second detection electrode and the ground electrode, and a diagnosis unit that diagnoses an abnormality of at least either of the first detection electrode or the second detection electrode based on a differential flow rate signal.

Mass flow controllers with on-tool diagnostic capabilities and methods for on-tool diagnosis of mass flow controllers are disclosed herein. One method includes opening a control valve to a fixed position and closing an upstream valve to produce a flow rate that decreases from a high flow rate, across a range of flow rates, to a low flow rate. A pressure signal is generated that is indicative of a pressure of the fluid within a volume between the upstream valve and a sensor tube, and a flow sensor signal is provided with the mass flow sensor that is indicative of a mass flow rate of the fluid through the main flow path. Ratio curves are produced that relate, across the range of flow rates, a rate of change of the pressure signal to the flow sensor signal and comparing a test ratio curve to a previously generated baseline ratio curve.

The invention relates to a drilling-resistance measuring device (10) and to a method for material testing in a humid environment or underwater. The drilling-resistance measuring device (10) comprises a housing (1), in which a drive and a drill chuck (3) coupled to the drive are arranged, in which drill chuck a drilling needle (4) is or can be releasably held, wherein the housing (1) has a drilling-needle outlet opening (5') enclosed by a drilling-needle outlet guide (5), through which drilling-needle outlet opening the drilling needle (4) extends out of the housing (1). The drilling-resistance measuring device (10) comprises at least one water-tight bellows (6), which is arranged in the interior of the housing (1) around the drilling needle (4) between the drill chuck (3) and the drilling-needle outlet guide (5), wherein moisture or water can enter the bellows (6) through the drilling-needle outlet opening (5').

A multi-dimensional liquid analysis system includes a first dimension system and a second dimension system, wherein outflow from the first dimension system is separated at a flow splitter under controlled conditions. The flow splitter separates the first dimension outflow into first and second split outlet flows, with one of the split outlet flows being metered to a designated flow rate with a flow metering device disposed downstream from the flow splitter. The flow metering device selectively closes or opens an outlet flow path to define a volumetric flow rate along that outlet flow path, so that the other split outlet flow is correspondingly controlled.

A vacuum-assisted in-needle capillary adsorption trap (VA-INCAT) device for sampling and delivering materials to an analytical device is disclosed. A sorbent is multiwall carbon nanotube/polyaniline (PANI/MWCNT) nanocomposite and is coated within an interior space of the needle between the second end and the side aperture to entrap an analyte within a sample. The VA-INCAT device also includes a vacuum device configured to vacuum the vacuum flask to improve the extraction of the analytes vapors from the sample matrix to the sorbent bed.

A method for operating a test station (10) for portable gas-measuring devices (20) is provided. The gas-measuring device (20) is arranged in fluid-communication with the test station (10) via at least one interface (13). A flow time is set, during which the test gas (30) is fed and a waiting time is set, during which no test gas (30) is fed. After an end of the feed of the at least one test gas results of the test are analyzed. The test station (10) is configured for feeding at least one test gas (30) to the interface (13). The test station (10) for portable gas-measuring devices (20) has at least one interface (13) for the fluid-communicating arrangement of the gas-measuring device (20), and wherein the test station (10) is configured for feeding at least one test gas (30) to the interface (13).

An electronic circuit for amplifying signals with two components in phase quadrature, which includes: a feedback amplifier with a feedback capacitor; a switch that drives charging and discharging of the feedback capacitor; an additional capacitor; and a coupling circuit, which alternatively connects the additional capacitor in parallel to the feedback capacitor or else decouples the additional capacitor from the feedback capacitor. The switch opens at a first instant, where a first one of the two components assumes a first zero value; the coupling circuit decouples the additional capacitor from the feedback capacitor in a way synchronous with a second instant, where the first component assumes a second zero value.

A sensing device includes an array of sensing elements. Each sensing element includes a photodiode, including a p-n junction, and a local biasing circuit, coupled to reverse-bias the p-n junction at a bias voltage greater than a breakdown voltage of the p-n junction by a margin sufficient so that a single photon incident on the p-n junction triggers an avalanche pulse output from the sensing element. A bias control circuit is coupled to set the bias voltage in different ones of the sensing elements to different, respective values that are greater than the breakdown voltage.

Power system for supplying high voltage to an electron beam emitter, which is adapted to sterilize a packaging container or a packaging material by electron beam irradiation, the power system comprising a voltage multiplier for generating a high voltage, a first voltage measurement device for measuring an output voltage level of the voltage multiplier and providing a first measured voltage value, and an actuator for modifying the output voltage level of the voltage multiplier based on the first measured voltage value provided by the first voltage measurement device, characterized in that the power system further comprises a second voltage measurement device adapted to independently measure the output voltage level of the voltage multiplier and provide a second measured voltage value.

A method and apparatus for controlling a dose of extreme ultraviolet (EUV) radiation generated by a laser produced plasma (LPP) EUV light source. In one embodiment, a running total of the EUV energy generated over a predetermined number of laser pulses is measured; once that number of pulses is exceeded, the energy from the pulse immediately preceding the most recent predetermined number of pulses is dropped from the running total, so that the running total is from the most recent predetermined number of pulses. If the running total of the EUV energy exceeds a target dose, the next pulse is caused to not hit a droplet. This avoids the unwanted side effects of various prior art solutions, such as needing to miss many droplets in a row, or requiring the laser pulses to be shortened or reduced in power as in other prior art solutions.

The invention relates to a method for controlling the divergence of a jet of particles in vacuo with an aerodynamic lens, the aerodynamic lens including at least one chamber; a diaphragm, a so-called inlet diaphragm, intended to form an inlet of the aerodynamic lens for a jet of particles, the inlet diaphragm having a given diameter (d1); and another diaphragm, a so-called outlet diaphragm, intended to form an outlet of the aerodynamic lens for this jet of particles; the method including: a step for generating the jet of particles from the inlet to the outlet, in vacuo, of the aerodynamic lens; and a step for adjusting the diameter (ds) of the outlet diaphragm for controlling the divergence of the jet of particles.

System, including methods and apparatus, for optical detection. The system may comprise a light source to generate a beam of light, an optical element, and a detector. The optical element may include a light guide having a shaft and a tip, with the tip forming a beveled end of the light guide. The optical element may extend into the beam, such that the tip and at least a portion of the shaft are located inside the beam, and a window of the optical element is located outside the beam. Light of the beam incident on the tip may be transmitted longitudinally through the light guide and out the window, while light of the beam incident on the shaft may be transmitted transversely through the shaft and remains in the beam downstream. The detector may be configured to detect light received from the window.

An optical circuit includes solid state photonics. The optical circuit includes a phased array of solid state waveguides that perform beamsteering on an optical signal. The optical circuit includes a modulator to modulate a bit sequence onto the carrier frequency of the optical signal, and the beamsteered signal includes the modulated bit sequence. The optical circuit includes a photodetector to detect a reflection of the beamsteered optical signal. The optical circuit autocorrelates the reflection signal with the bit sequence to generate a processed signal.

A fluid analyzer includes an optical source and an optical detector defining an optical beam path through an interrogation region of a fluid flow cell. Flow-control devices conduct analyte and reference fluids through a channel and the interrogation region, and manipulate fluid flow in response to control signals to move a fluid boundary separating the analyte and reference fluids across the interrogation region. A controller generates control signals to (1) cause the fluid boundary to be moved across the interrogation region accordingly, (2) sample an output signal from the optical detector at a first interval during which the interrogation region contains more analyte fluid than reference fluid and at a second interval during which the interrogation region contains more reference fluid than analyte fluid, and (3) determine from samples of the output signal a measurement value indicative of an optically measured characteristic of the analyte fluid.

Techniques are described that includes using a memory to store data within a system. The techniques include lowering a supply voltage applied to said memory and ceasing use of the memory to store data within the system. The techniques further include reading values from the memory with the supply voltage being lowered. The techniques further include determining a radiation level from an amount of corrupted ones of the values.