Researchers from Penn University School of Medicine investigated the safety of Viagra in men with severe coronary artery disease. The study revealed no direct adverse cardiovascular effects from Viagra use, but a small beneficial effect on coronary blood flow reserve was observed.
Researchers at University of Michigan and Swiss Federal Institute of Technology propose alternative theory on Earth's formation. They found that tungsten isotopic compositions of Earth do not match those of enstatite chondrites, supporting the idea that planets received materials from broad regions of the solar system.
Researchers at University at Buffalo develop a system that allows physicians to store information about their touch during an exam using virtual reality. This data can be accessed by other physicians, enhancing clinical palpation and enabling more accurate diagnoses.
A recent study by Dr. Mani Subramani and Eric A. Walden found that Internet firms can earn almost double the profits of brick-and-mortar firms through partnerships. This is due to their ability to form strong relationships with partners, increasing investment and output value.
Researchers studied ancient sediment samples to understand Antarctica's past environmental changes and their impact on global climate. The findings suggest a complex relationship between ocean circulation patterns and ice sheet stability, contradicting previous desert-like conditions in the region.
Researchers discovered that large female spiders in colonies compete for space by building their webs earlier, using a capitalist technique to pre-empt areas. This strategy allows them to secure private space for egg-laying and reduces conflicts with smaller spiders.
Researchers at the University of Kentucky have discovered a new potential target for compounds that may treat or prevent Alzheimer's disease. The receptor RAGE interacts with amyloid fibrils, accelerating fibril formation and inducing cellular dysfunction.
Scientists from the Weizmann Institute of Science have shown that frequent observations do not freeze motion, but rather increase it. This contradicts Zeno's paradox, which suggested that repeated glimpses could stop an object in place.
Researchers suggest using ultrasound and audible sound waves to measure eye fluid pressure. This could enable glaucoma patients to monitor changes in pressure, taking medication accordingly.
A study published in The Quarterly Review of Biology suggests that morning sickness serves a beneficial function, shielding the mother and fetus from harmful foods and chemicals. Women who experience morning sickness are less likely to miscarry than those who do not, and their aversion to certain foods peaks during the first trimester.
A team of Boston University astronomers has captured new ground-based photos of Mercury's surface, revealing details similar to those on the Moon. The images, taken in August 1998, show bright craters and dark lunar mare-like markings, providing insights into Mercury's geology.
The NEAR Shoemaker mission suggests asteroid Eros is a primordial relic from the solar system's formation, with an elemental composition similar to chondritic meteorites. Studying Eros could help scientists understand how rocky planets evolved.
TacMedCS is a tactical medical coordination system designed to expedite assessment, treatment, and transport of injured personnel. The system uses radio-frequency tags to store and transmit medical information, freeing up time for corpsmen to treat more patients.