"After September 11, the Red Cross started thinking about developing multiple storage depots across the U.S. for frozen red blood cells," says Colonel Thomas Reid, chief of the department of Blood Research at the Walter Reed Army Institute of Research (Silver Springs, MD). "The problem we have is that when the blood ships during times when the temperature dips, the bags containing the blood become brittle," he says. Once the bags break, sterility is compromised and the blood becomes a loss. "In some conditions, our loss rate is 50 to 80% of the entire shipment." Reid and his colleagues investigated the physical and thermal properties of several commercially available blood storage bags. The bags were made from polyvinyl chloride (PVC) with diethylhexylphthalate (DEHP) or trimellitate (TEHTM) plasticizer; polyolefin (PO); polyethylene-co-vinyl acetate (EVA); or fluorinated ethylene propylene (FEP). Bags containing EVA were more shock resistant, giving the lowest rate of breakage (10%) compared to PO or PVC, according to Reid's research. Blood product storage bags made of EVA appear better suited for shipping frozen blood products on dry ice and are cost effective replacements for PVC and other bags, reports Reid. For more information on the research, call (202) 782-3501 or go to www.wramc.amedd.army.mil.
On Memorial Day, Americans remember the sacrifices the US armed forces have made, and continue to make, in service to the country. All of us should also consider the developments in technological capabilities and equipment over the years that contribute to the success of our military operations.
In order to keep in line with safety protocols, industrial networks need to be filtered in a semantic way so that only information related to diagnostics is flowing back to the vendor and that any communications that could be used for remote machine operations are suppressed.
Advanced visualization can depict an entire plant in motion, while also detailing an individual workstation. Individual products can be rendered different for each discipline involved — marketing, engineering, or suppliers.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.