Waterloo, Canada, December 12, 2016: Maplesoft today announced that its mathematical computation software, Maple, is now on display at the Science Museum in London. On December 8, 2016, the museum opened Mathematics: The Winton Gallery which explores how mathematicians, their tools and ideas have helped to shape the modern world over the last four hundred years. The gallery showcases an early version of Maple from 1997.

The worksheet shows a procedure for the representation in de Poincaré disc of convex and self-intersecting regular hyperbolic polygons.

The worksheet shows a procedure for the representation in de Poincaré disc of regular right-angled, convex and star hyperbolic polygons.

The physical effect known as stepwise precession is a surprising fact that takes place in the movement of an elastic pendulum. When this pendulum is initially set near the downward equilibrium vertical configuration, with the length of the spring stretched by the gravity force, there is a chance to move in such a way that the springing vibrational mode of movement and the rotational "swing" mode interchange periodically their respective energies, with a periodic change of the swing plane and stepwise precession. We simulate here numerically the same dynamical behaviour for the natural extension of a double elastic-spherical pendulum.

A top Palantir [PLTR] executive last week offered a sweeping set of recommendations—he calls them theses—for transforming the way the Defense Departments buys weapons and systems, and how U.S. industry […]

Palantir Technologies [PLTR] on Monday reported surging sales in its third quarter that included strong revenue from Defense Department contracts and the U.S. government overall. Sales to the DoD were […]

The Defense Department last Friday said it has awarded $148 million that will go to its eight regional hubs under a program designed to bolster domestic microelectronics innovation and production. […]

The ninth in our series is on the Kidneys, ureters and bladder.
See our website for accompanying diagrams

EPA issued a final rule establishing a comprehensive program to cap and phase down the production and consumption of climate-damaging HFCs in the United States.

Colorado’s total allocation for both Home Energy Rebates programs is more than $70 million.

An additional $500,000 in funding is available this winter for low-income Coloradans who can't afford to repair their non-working home heating system, according to Energy Outreach Colorado (EOC).

While exterior pollutants, such as smog and CO, may receive more attention, IAQ within a home can have serious effects on our physical and mental health, as well.

The National Air Duct Cleaners Association recently drew more than 500 people to a resort near Denver for its annual meeting and exposition.

Building operators want people back, and they’re investing in IAQ upgrades to help ease occupant concerns.

The pandemic has caused IAQ to become a big concern, which has led industry experts to recommend increasing ventilation and upgrading filtration for commercial buildings.

IAQ has become a very important topic as the COVID-19 global pandemic has continued to evolve.

Parker Hannifin Corp. addressed two of today’s most pressing HVACR issues ― a labor shortage and pandemic-fueled concerns about indoor air quality (IAQ) ― during the recent AHR Expo.

Just 3% of commercial contractors were pessimistic about the upcoming year in 2024, compared to 22% in 2023.

JCI has hired an executive search firm to help evaluate both internal and external candidates in an effort to find a replacement for its current CEO, who has announced his plans to retire from that position.

Among the various HVAC insulation options available, elastomeric closed-cell foam duct insulation (closed-cell foam) solutions stand out for providing safe, sustainable, high-performance thermal and acoustic insulation while resisting moisture and improving overall indoor air quality (IAQ).

January is National Radon Action Month, and IAQ manufacturer AprilAire used its booth at the AHR Expo to showcase its new radon mitigation lineup.

It has now been two years since the pandemic brought IAQ to the forefront of everyone’s minds. Manufacturers are stepping up with an array of products to clean and monitor the air people breathe.

Homeowners are increasingly paying attention to improving their indoor air quality, and dehumidification is a big part of the IAQ equation.

A big part of the growth cycle of the cannabis plant is deeply rooted in the ability of the plant to absorb and rid itself of water vapor, so we now add a D to HVAC for dehumidification.

Following are several of the latest dehumidification products on the market, representing residential and industrial applications alike.

Indoor airPLUS is a voluntary EPA partnership and labeling program that helps the builders of new homes improve the quality of indoor air and meet the growing consumer preference for homes with improved IAQ. 

The manufacturers of HVAC products for indoor farming say their equipment can help optimize growers’ crop yields.

More and more travelers are ranking air quality as an important factor when deciding where to stay — here’s how the HVAC industry can help tip the scales for hotels.

The boilerwize FPC-1000 is the first-ever field configurable low water cutoff device. Its patented technology monitors water level condition, ensures protection and safety for steam and hot water systems.

The s-MEXT indoor unit, a Computer Room Air Conditioning (CRAC) unit for I.T. cooling applications, includes uses such as small-to-medium- sized data rooms, cell phone and cable TV/telephone/internet provider relay stations, medical imaging equipment cooling and critical cooling infrastructure applications, laboratories, archives and libraries. 

The Verified Market Research Report shows that the heat pump market is valued at $74.73 billion in 2024 and is expected to reach $167.32 billion by 2031.

The donation underscores Miura's commitment to advancing boiler safety standards and supporting the education and training of boiler inspectors nationwide, the company said in a press release.

How do we motivate HVAC contractors to do more refrigerant recovery? The ACHR NEWS posed the question to three industry experts on the front lines of the refrigerant transition. Here’s what they had to say about what that will take — and what we’re all going to be in for if we don’t.

“We put together some sections of 2 ½-inch pipe, and Joe tried to drive a nail through them with a hammer. I remember him reporting back and saying, ‘This is not your typical plastic.’”

If an HVAC contractor possesses knowledge pertaining to IAQ solutions and how to approach the subject with a homeowner, they are in a good spot to sell the equipment.

With the recent surge of interest in IAQ options, consumers might easily forget that those components must still work within a system.

The U.S. Department of Energy’s (DOE’s) Building Technologies Office has released a request for information seeking stakeholder input on the design and construction of tenant spaces that achieve high levels of energy efficiency in commercial buildings.

Manufacturers in the realm of IAQ are seeing an uptick in interest due to increased awareness among consumers as well, as the air quality concerns that come as a byproduct of efforts to tighten up buildings to increase energy efficiency. In response, they’ve been updating IAQ products for the age of the smartphone and the “smart” HVAC system.

Let’s look at five hidden reasons HVAC systems might not keep up when the temperatures get hot, how to test for them, and potential repairs.

Hunter Industrial, a division of the Hunter Fan Company, has donated and installed two HVLS fans to DCI Logistics.

HVLS fans offer an affordable and effective solution for large-scale ventilation, as well as demonstrating success in smaller applications.

At the 2020 AHR Expo, Broan-NuTone introduced Overture, a fully automated, cloud-connected, whole-home IAQ system that monitors and optimizes air in the home.

This product includes a zero-penetration roof backed by the Endura10R™ 10-year roof warranty.

Hoshizaki America Inc. announced the appointment of James McDowell as president

The Refrigeration School Inc. (RSI) in Phoenix, Arizona, in partnership with Clear Channel Outdoor, recently donated and installed an ice machine at Aimee's Animal Sanctuary in Queen Creek, Arizona, to help protect more than 100 special needs animals from severe heat.

Responding to increased public awareness of the importance of healthy indoor air quality, the hospitality industry is stepping up its game when it comes to providing guests with fresher, cleaner, and, sometimes, sanitized indoor air.

The owner has bought into the project, the contract has been signed, and the design has been designed. Today is ductwork day.

By employing a ventilation strategy such as a DOAS, conditioned fresh air can be brought into the building, thus improving IAQ and ensuring a safer environment.

Diverse examples show the importance of air movement and the creative ways in which contractors and manufacturers have dealt with it successfully.

The awardees will focus on early-stage R&D projects exploring innovative technologies for drilling geothermal wells that show the ability to reduce non-drilling time, improve rates of penetration, and identify methods to accelerate the transfer of geothermal drilling and related technologies from the laboratory to the marketplace.