Estrogen therapy has been shown to alter brain activation patterns in postmenopausal women, increasing activation in areas associated with verbal memory and registration, similar to younger adults. The study used fMRI technology to observe changes in brain function while performing memory tasks.
Researchers at the University of Delaware have developed a novel alloy of silicon-carbide and germanium that may handle hot, high-power microelectronic and MEMS devices better than silicon. The material also shows promise for enhancing the speed and stability of next-generation silicon-germanium chips.
A Wake Forest University study found that US dialysis patients are more likely to miss treatment sessions compared to their European and Asian counterparts. Factors contributing to this discrepancy include differences in dialysis prescription, patient health, medical system eligibility, and patient independence.
The latest Ecology journal edition examines the survival of Yellowstone grizzly bears, which remain threatened despite intensive management. Ferns also play a crucial role in determining forest composition by filtering tree growth rates. Earthworms shed light on plant responses to climate change through their nutrient-rich castings.
Undergraduates at Johns Hopkins University engage in important research projects alongside top scientists, creating innovative solutions such as a robotic submarine and testing treatments for Alzheimer's disease. Students also develop digital models of the heart and conduct gene-therapy experiments with polymer nanospheres.
The FUSE Satellite will observe wavelengths of light inaccessible to other telescopes, testing models of chemical evolution and determining the primordial abundance of deuterium. This will help scientists understand the origins of the universe, galaxy evolution, and chemical mixing and distribution.
Scientists attribute the retreats to regional warming trends, which have caused annual melt seasons to increase by two to three weeks over the last 20 years. The ice shelves' disintegration is accelerating, with much of the Wilkins Ice Shelf likely gone within a few years.
A study by Mark R. Rank and Thomas A. Hirschl found that nearly two-thirds of all Americans will experience poverty for at least one year during their lifetime, with the likelihood increasing with age.
Researchers discovered that a mutant form of the presenilin-1 protein causes a significant reduction in amyloid formation. The study provides insight into the interaction between two key molecules involved in amyloid formation, which may lead to advances in therapeutics research.