A new study found that having a passenger in a vehicle increases the risk of fatal injuries for young drivers, with three or more passengers posing the highest risk. The researchers suggest that graduated licensing systems could help reduce accidents by prohibiting teen-age drivers from transporting passengers.
Chemist Richard L. Hahn's work with solar neutrinos reveals insights into the sun's behavior and duration. His research uses giant tanks to detect neutrino collisions, which may lead to a re-evaluation of fundamental theories.
The American Chemical Society's panel discussion at the 219th national meeting will focus on the partnership between education, industry, media, and science policy. The event aims to shape the future of chemistry in the next century.
Dennis P. Curran develops new ways to make molecules used as anti-cancer drugs using free radicals, which were once considered too reactive for laboratory use. His work has led to the creation of more stable derivatives that could potentially allow lower doses of chemotherapy.
Stephen L. Buchwald receives American Chemical Society Award in Organometallic Chemistry for developing more efficient methods to create complex chemical bonds, with applications in plastics, drug discovery, and manufacturing. His work has been recognized for its breadth and unique interest, spanning multiple fields.
A study of over 3300 schoolchildren found that babies exposed to their mothers' cigarette smoke while in the womb had poorer lung function. The effects were particularly noticeable on small airways and were more pronounced than those caused by environmental tobacco smoke exposure after birth.
Researchers found that cooking enhances iron availability in 37 of 48 tested vegetables, with some seeing a nearly doubling of bioavailability after cooking. The approach could help populations in developing countries and vegetarians worldwide boost their nutritional absorption of iron.
A joint Canadian-United States study found that flavonoids from orange and tangerine juice inhibited the growth of prostate, lung, and melanoma cells. The compounds were particularly effective against human prostate cancer cells, with small amounts inhibiting cancer cell proliferation.
Researchers at the Monell Chemical Senses Center have narrowed the search for a gene responsible for sweet preference in mice to a specific area of chromosome 4. This region is thought to be a likely candidate for a 'sweet taste gene' that affects both mouse and human perception of sweetness.
A study by Ohio State University found that some energy bars give a sudden spike in blood sugar levels, unlike the moderate increase claimed for endurance athletes. The Ironman PR Bar had a steady effect due to its balanced carbohydrate and protein content.
Experts will discuss new synthetic elastomers designed to improve tire traction properties, as well as surface-modified mineral fillers that could increase fuel economy in vehicles. Researchers will also predict fatigue in fiber-reinforced rubber composite laminates in tires.
Researchers found that white tea contains higher levels of polyphenols than green tea, which may contribute to its enhanced cancer-fighting potential. White tea was shown to inhibit DNA mutations more efficiently than green tea in laboratory tests, suggesting it may have a stronger role in preventing colon cancer.
Teenage drivers face increased risks of fatal crashes when transporting more passengers, particularly those under 30 years old. Researchers recommend graduated licensing systems to mitigate this risk and reduce motor vehicle crashes among teenagers.
Chemist Slayton Evans Jr. of Chapel Hill has been honored by the American Chemical Society for opening new doors in science, especially chemistry, for minority high-school and college students. He was recognized for fostering programs and scholarships to encourage minority scholarship in his 25 years at the University of North Carolina.
Researchers have developed a new biomaterial that uses an electricity-conducting polymer in combination with a naturally occurring sugar molecule to stimulate nerve growth. The material breaks down over time, allowing the nerve to grow and reach its target weeks or months later.
A recent study found that smoking cannabis regularly may increase the risk of developing emphysema, a disease that damages lung tissue and reduces surface area. The study examined four young men who smoked heavily and found large areas of their lungs had disappeared and been replaced with cysts.
Jerry A. Bell, a leading educator in chemistry, receives the George C. Pimentel Award for his contributions to making chemistry relevant to everyday life. His new textbook, due to be published in 2001, aims to engage students with real-world applications of chemistry.
E. Philip Horwitz developed resins that selectively remove radioisotopes from complex mixtures, improving monitoring of workers' exposure and ingestion of radioisotopes. His technology processes about 350,000 samples per year worldwide, with potential applications in countries monitoring Chernobyl effects.
J. Larry Duda, a Penn State University chemist, has been honored with the E.V. Murphree Award in Industrial and Engineering Chemistry for his research on polymer behavior. His work helps improve product performance by understanding how small molecules migrate through polymers.
Patients awaiting coronary artery bypass grafting (CABG) in Ontario face higher mortality risk compared to the general population. However, a new study found that those on the waitlist may actually have similar or decreased vital risk when compared to patients living with coronary artery disease.
A new study published in Thorax suggests that daily or weekly use of paracetamol may be associated with an increased risk of asthma. The research found that frequent users of paracetamol were more likely to develop severe asthma and experience rhinitis, highlighting the potential risks of this analgesic.
New research suggests that non-mutational gene defects, involving DNA methylation, contribute significantly to the development of cancer. Up to 10% of genes in some tumor types are found to be inactivated by aberrant DNA methylation, suggesting a much larger role for this process than previously thought.
Research on MTBE contamination highlights the need for alternatives to this toxic fuel additive. Studies show that MTBE degrades slowly in sediments, but can be rapidly degraded by bacteria with oxygen addition.
A new study from the USGS and Oregon Graduate Institute reveals that up to 9,000 community water wells in 31 states may be contaminated with MTBE due to proximity to leaking underground storage tanks. The EPA has announced plans to phase out MTBE use in gasoline, but it will persist in the environment for at least a decade.
Actor Christopher Reeve was awarded the UCSD-Salk Institute Service Award for his tireless efforts to raise awareness of the importance of basic research for human biology and disease. The award recognized his unwavering personal campaign to increase public and legislative awareness of the need to support basic research in health.
Researchers found a correlation between unexplained foot fractures and low bone density, a primary symptom of osteoporosis. The study suggests that podiatrists should inspect patients with at-risk conditions for early signs of osteoporosis.
A new NASA web site features women who are making history with their contributions to microgravity research. The site profiles women from diverse backgrounds and expertise, including astronauts, scientists, engineers, and more.
The First Annual Civil War Medical Symposium will examine the influence of the mid-1800s conflict on modern medicine. Four physicians will discuss specific medical advances resulting from the war, including improvements in nerve injury treatment and smallpox vaccination.
Researchers at University of Iowa have found that a specific gene vector, AAV5, can effectively reach many brain sites following a single injection. The study suggests that AAV5-based vectors could be used to deliver correct copies of genes to cells throughout the central nervous system without multiple injections.
A study of over 3300 schoolchildren reveals that exposure to maternal cigarette smoke during pregnancy significantly reduces lung function. The effects are particularly noticeable on small airways and airflow, with environmental tobacco smoke having a lesser impact.
Chemist William R. Dolbier receives American Chemical Society Award for Creative Work in Fluorine Chemistry for innovative studies of fluorine, which strengthens bonds and makes products like Teflon resistant to high temperatures.
Researchers are conducting a national study to determine if a vaccine similar to the one given to children to prevent chicken pox will prevent shingles in older adults. The study hopes to enroll 37,000 people over 60 with no prior shingles diagnosis, aiming to boost their immunity and prevent the shingles virus from returning.
A distinguished panel of bioethicists published papers on physician-assisted suicide in Annals of Internal Medicine, discussing guidelines, safeguards, and expert opinions on the clinical, moral, and ethical issues involved. The findings highlight the need for thoughtful direction and common ground among diverse views.
A study of 947 HIV-positive individuals found that hospital admission was linked to unemployment (82%) and poor health status (46%). The study also showed that having a physician experienced in HIV/AIDS management was beneficial for avoiding hospital admissions.
Researchers at OHSU's Casey Eye Institute have developed a new method to diagnose rare eye infections caused by the Acanthamoeba organism. Using a confocal microscope, they can now detect the early stages of infection, allowing for prompt treatment and preventing vision loss.
A consensus panel convened by the University of Pennsylvania's Center for Bioethics discusses guidelines, treatments, and legal responses to assisted suicide. The panel aims to establish safeguards that make physician-assisted suicide voluntary, regulated, and an option of last resort.
Czanderna's work focuses on improving photovoltaic efficiency and lifespan, with a goal of making solar energy comparable to fossil fuels. His research led to the development of an insulating material that promises to last at least six times longer.
The TMJ Association has launched a national awareness campaign to raise awareness about jaw joint diseases, which affect over 10 million Americans, mostly women. The campaign aims to promote quality research and improved treatments for the condition, which causes debilitating pain and dysfunction.
Researchers at Pennsylvania State University have developed coal-derived jet fuels that can withstand higher temperatures without forming engine-clogging deposits. This breakthrough could enable faster, safer flight for commercial jet aircraft.
A team of researchers has developed a genetic tracking system that allows them to follow neural crest cells from the embryonic stage to adulthood. The study reveals key players in tooth formation and highlights their contribution to other craniofacial structures.
Chemist John D. Corbett is recognized for his pioneering work in inorganic chemistry, leading to the discovery of novel solid-state compounds with unique structures and properties. His research has enabled the development of products such as cell-phone batteries, catalytic converters, and corrosion-resistant alloys.
Frank Cardulla, a Glenview teacher, has won the James Bryant Conant Award for his innovative approach to teaching high school chemistry. He emphasizes understanding over rote memorization, encouraging students to think critically about chemical processes.
Dr. Mario Molina, Nobel laureate and environmental science professor, will address his experiences as a minority in the sciences at the American Chemical Society meeting. He will also discuss his work on ozone depletion and atmospheric chemistry.
A Canadian Medical Association Journal study found that pushes from behind and impacts with the boards account for most spinal injuries in ice hockey. The study also revealed regional disparities and a disturbingly low median age of injured players, highlighting the need for prevention strategies.
For over 40 years, chemist Ernest Davidson has used computers to simulate and study chemical reactions with precision. Today's computer programs can model complex reactions involving up to 30 atoms, enabling chemists to devise new reactions.
A study found that 54 out of 57 bottled waters had fluoride levels below the recommended range, while all Cleveland tap water samples met or exceeded the optimal level. Bottled water also contained higher bacteria counts than tap water, with some samples having over 4,900 colonies per milliliter.
Hoffman's groundbreaking work led to the discovery of primordial plutonium and seaborgium, with a focus on symmetrical mass division in spontaneous fission. Her ongoing research continues to advance our understanding of nuclear chemistry and its applications.
Researchers have captured the first pictures of neurofilaments moving along nerve fibers using time-lapse photography, providing a rare glimpse into slow axonal transport. The study suggests that neurofilaments move quickly but infrequently, and may hold clues to understanding nerve malfunction in diseases like Lou Gehrig's.
Samuel Danishefsky has developed anti-cancer vaccines that stimulate the immune system to recognize and attack cancer cells. His research also explores laboratory versions of natural products with potential to combat cancer. Several vaccines are entering Phase II and III clinical trials to test their effectiveness.
Researchers create way to 'finger print' and monitor water absorption in clays, which could improve oil well drilling and construction site understanding. The technique uses X-ray scattering to analyze the distance between crystal layers in clay.