Two companies buy controlling interest in Acme Cryogenics
Gladstone Investment Corp., Acme Cryogenics' Senior Management Team, and Brant Point Partners bought controlling interest in Acme Cryogenics, Inc. from founder Roderic Fink.
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Praxair celebrates its 100th anniversary
Praxair, Inc. celebrated the 100th anniversary of its founding and its 15th year as a publicly-traded corporation on January 24, 2007.
Linde Hydrogen Center inaugurated in Munich-Unterschleissheim
The inauguration of the new Linde Hydrogen Center in Munich-Unterschleissheim in October marked Linde AG's commitment and support to a hydrogen economy.
Yoed Rabin leads cryosurgical research team
Carnegie Mellon University's Yoed Rabin is leading an interdisciplinary research team in developing a new computerized research tool to assist surgeons in planning cryosurgery.
NHMFL to build hybrid resistive/superconducting magnet
NHMFL has received an $11.7 million National Science Foundation grant to build an innovative, next-generation hybrid resistive/superconducting magnet that will potentially revolutionize a technique used to learn more about little-understood molecules.
Barber-Nichols celebrates its 40th anniversary
Barber-Nichols celebrated its 40th anniversary with an open house for customers, employees, vendors and alumni.
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Dewar
A dewar is a type of cryostat named after Sir James Dewar, the researcher who first developed the concept of a vacuum insulated container with silvered walls to reflect thermal radiation. Dewar was the first to liquefy hydrogen, and he created the device to store his discovery. The thermos bottle...
Stirling and Gifford-McMahon Cryocoolers
Stirling and Gifford-McMahon (GM) cryocoolers are two of the most commonly used cryocoolers in cryogenics. Both devices have a significant industrial base and operate at a wide range of temperatures and capacities. The thermodynamic cycles for both of these cryocoolers are quite similar. The Stirling cycle consists of a compressor,...
Liquefied Natural Gas (LNG)
A significant commercial application of cryogenics is the liquefaction, transport and storage of natural gas. Liquefied Natural Gas (LNG) is generally 95 percent methane with a few percent ethane and much lower concentrations of propane and butane. LNG liquefies at 111.6 K. Unlike many applications of cryogenics, the motivation for...
Food Processing
Cryogenics and Food The industrial gas industry provides a host of products and services related to food. The various gases have useful and sometimes fascinating applications in food industry. “The food industry is not a homogenous industry. The needs of customers processing hamburger vs. poultry vs. strawberries vs. seafood, for...
Primary Standards
Elie K. Track Hypres, Inc. elie@hypres.com http://www.hypres.com/ Primary standards involve the exact definition and realization of units of measurement for various quantities, time, length, mass, voltage, resistance, current, etc. International agreements based on the latest scientific knowledge define those units, and their realizations vary depending on the unit itself. For...
Shrink Fitting
Robin A. Rhodes Cryogenic Institute of New England, Inc. rrhodes@nitrofreeze.com Shrink fitting, (or “compression fitting” as it is sometimes called), is a method used to insert a pin or bushing into a housing or other assembly requiring an extremely tight tolerance fit. It can be used as an alternative to...
Telecommunications
From the Winter 2004 issue of Cold Facts magazine The recent M-Calc IV — 4th Industry Assessment workshop discussing military and commercial applications for low-cost cryocoolers, held in November in San Diego, highlighted progress being made in cryogenics as applied in telecommunications. The reliability and long lifetime of projects now...
Presence of alloying elements in tool steels
I want to expand my knowledge of cryogenics in general and tool steels in particular. Specifically, I am keenly interested in learning about the presence of alloying elements in tool steels and how their presence in various combinations affects the performance of tool steels after cryogenic treatment.
Pros and cons of barcoding samples
I was wondering if I could ask for input on pros and cons of barcoding. We are in the process of trying to decide if we should start barcoding our samples and I’m just not sure if this is feasible for our organization. We have numerous sites all over the...
Purity level of helium gas stream in cryo plant purification system
I would like to know what the principal methods and the relative instrumentation to check the purity level of helium gas stream in the purification system of a common helium cryogenic plant are. What principles are these instruments based on? And what are their principal characteristics?
LN2 for cryopreservation through controlled rate freezing of samples
I am the cryogenic specialist for a stem cell bank in Greece. I am trying to find the minimum requirements (purity, humidity, etc.) of liquid nitrogen for cryopreservation through controlled rate freezing of biological samples.