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Women who have received a heart, heart-lung or lung transplant are having successful pregnancies after transplantation, according to a study by researchers at Jefferson Medical College.
While such pregnancies are considered “high risk,” the results are encouraging, says Vincent Armenti, M.D., Ph.D., professor of surgery at Jefferson Medical College of Thomas Jefferson University in Philadelphia.
The researchers compiled information through the National Pregnancy Transplantation Regi
Discovery reveals smallest size molecules form functional structures; nanotechnology, research implications may be significant
While it may not make much of an anniversary present, a gold chain built atom by atom by UC Irvine physicist Wilson Ho offers an answer to one of the basic questions of nanotechnology—how small can you go?
In the first study of its kind, Ho and his colleagues have discovered the molecular phase when a cluster of atoms develops into a solid structur
A NASA researcher finds that the amount of sea ice that moves between Greenland and Spitsbergen, a group of islands north of Norway, is dependent upon a “wave” of atmospheric pressure at sea level. By being able to estimate how much sea ice is exported through this region, called Fram Strait, scientists may develop further insights into how the ice impacts global climate.
This export of sea ice helps control the thermohaline circulation, a deep water ocean conveyor belt that moves warm, sal
Mechanism may provide insights into development and cancer
When cells divide in two, they must carefully manage the process by which their DNA is replicated and then apportioned to the daughter cells. In one critical step along the way, the replicated DNA strands – or sisters – are held together for a period by a temporary scaffold of bridging proteins. When the timing is right, the proteins unzip, allowing the DNA sisters to separate. Errors in this or other steps in cell division ca
Atmospheric measurements made at Earth’s geographic poles provide a convenient way of validating and calibrating global circulation models. Such measurements also might provide some of the first conclusive evidence of global change in the middle and upper atmospheres. But new data shows that the current models are wrong: Temperatures over the South Pole are much colder in winter than scientists had anticipated.
As reported in the Aug. 28 issue of Geophysical Research Letters, scientist
In the search for a nonpolluting energy source, hydrogen is often cited as a potential source of unlimited clean power. But hydrogen is only as clean as the process used to make it. Currently, most hydrogen is made from fossil fuels like natural gas using multi-step and high-temperature processes.
Now, chemical engineers at the University of Wisconsin-Madison have developed a new process that produces hydrogen fuel from plants. This source of hydrogen is non-toxic, non-flammable and can be