Carbon nanotubes' electronic and mechanical properties are highly dependent on the presence of defects, which alter their vibrational modes and affect electrical conductivity and heat transport. The study demonstrates the importance of understanding these effects for optimizing nanoscale devices.
Scientists have successfully slowed down the group velocity of light in semiconductors, achieving speeds of about 6 miles per second. This breakthrough could lead to faster optical networks and higher performance communications, enabling applications like 3-D graphics transmission and high-resolution video conferencing.
The development of nanomedicines has led to significant advances in the diagnosis and treatment of disease. Thousands of patients are already benefiting from products used to treat conditions such as cancer, AIDS, and arthritis.
Parkinson's disease is often associated with depression, a condition that can significantly impact patients' lives. Research suggests that depression is part of the illness and not just a reaction to the disease.
The SNEWS system, an international collaboration of neutrino observatories, aims to provide astronomers with a prompt alert for galactic supernovas. This network can electronically compare data to increase scientists' confidence that a neutrino signal is really from a supernova.
A perfect lens could improve electronic circuitry, fiberoptic communications, and medical imaging, but mathematical analysis shows it is not feasible. Researchers used rigorous math to demonstrate that a perfect lens would struggle with the concept of negative refraction.
A computer program simulated how people who felt threatened would respond to a serial subtraction problem, showing a 25% decrease in performance speed. Increasing knowledge through instruction and practice, or continuously checking results to bolster confidence, can help individuals switch their pre-task appraisal from threatening to c...
Recent APS exercise research highlights significant findings in various areas, including reduced flu mortality and improved cardiovascular function. Studies on protein expression and skeletal muscle regeneration have also shed light on the mechanisms behind these processes.
A Princeton University study found that changes in U.S. forests caused by land use practices have increased the emission of smog-producing chemicals from trees, which may have worsened ozone pollution in some parts of the country. The study suggests that intensified tree farming and other land use changes have altered the mix of trees ...
Intraoperative MRI improved tumor removal by detecting additional tissue that needed to be removed, altering surgical strategy in 27.5% of cases. High-field MRI provides better image quality and reduced scan time, but its high cost is a limiting factor.
Researchers at Harvard University have found evidence of ancient grain milling and baking 23,000 years ago in present-day Israel. The discovery provides insight into the transition from foraging to food production, revealing that humans first developed technologies to process wild grains around 20,000 years ago.
A study by the University of Wales and the University of Exeter suggests that high levels of calcium intake combined with vigorous daily exercise are crucial for building and retaining bone mass in children. The researchers found that children should engage in at least 25-40 minutes of vigorous activity and consume at least 700-800 mil...
Researchers identified gene clusters that predict severe disease severity and location of atherosclerotic lesions in human aorta samples. The study used DNA microarray analysis to reveal 208 genes associated with severe disease and 28 genes related to disease location, showing promise for personalized medicine approaches.
The NSF-funded research centers will investigate decision-making strategies for addressing climate uncertainty, including water management and policy implications. The projects will integrate psychological insights with social sciences to develop tools for better understanding the impacts of climate change.
A survey of over 700 adults found that 50% of men and only 32% of women supported routine paternity testing. The difference in response remained consistent despite marital and income status. Researchers speculate that women may seek a father's genetic heritage or parental investment, but this practice is rare due to the potential risks.
The new guideline suggests tricyclic antidepressants, gabapentin, lidocaine skin patch, and opioids as effective in reducing pain from postherpetic neuralgia. However, the long-term effects of these treatments are not yet supported by sufficient data.