A computer simulation suggests that large buses running on separate traffic lanes can achieve a comfortable level of crowding without gridlock. The study's findings support mass transportation as the preferred option for most commuters, even with a few individuals choosing to drive by car.
A new study found a positive relationship between vitamin D levels and muscle power, force, velocity, and jump height in adolescent girls. The researchers measured serum vitamin D levels in 99 adolescent girls and used jumping mechanography to assess muscle power.
Researchers at Fraunhofer-Gesellschaft develop biogas plant that generates 30% more electricity from non-edible corn stalks. The new plant reduces storage time by 50-70% and boosts electrical efficiency to 40-55% with fuel cells.
A recent study by Children's Hospital found that African-American parents are twice as likely to distrust medical research as white parents. This mistrust can lead to lower participation rates in clinical trials, exacerbating racial health disparities.
Scientists at Carnegie Institution create novel 'compound' from pure boron, exhibiting low mass, high strength, and response to neutron irradiation. The discovery builds on previous superconductivity findings in boron and paves the way for understanding its transition to superconductivity under pressure.
A study found that automation and mechanization improved worker productivity and earnings in the nursery and greenhouse industries. Continuous skill improvements and year-round workforce availability are essential for sustaining industry growth.
A University of Missouri study has disproven a long-held theory about the nervous system's development, identifying key proteins involved in the process. The findings shed light on how neurofilaments affect axonal diameters and could lead to a better understanding of neurological diseases such as multiple sclerosis.
Research suggests that US public funding for specialty crops is inadequate, with production value growth not matched by research spending. Increasing funding could lead to lower fruit and vegetable prices, promoting healthier diets among Americans.
A study by UT Southwestern Medical Center found that automation in hospital information systems was associated with decreased fatalities, lower costs, and shorter lengths of stay for patients with various medical conditions. Hospitals with well-designed technology systems had better patient outcomes.
Researchers found a genetic variation in the HGF gene that increases breast cancer risk, suggesting shortening of a DNA region called DATE could be a useful marker. A study also revealed that high-fat diets can lead to insulin resistance by damaging mitochondria and increasing oxidative stress, but antioxidants may mitigate this effect.
Researchers found that firefly luciferase tests can produce false positive results, which may impact the screening process. The study's findings suggest more work is needed to ensure the accuracy of the screening process.
Migraine affects millions worldwide, causing substantial decreases in functioning and productivity. Recent clinical studies suggest it may be a progressive disease with cardiovascular and neurologic effects, requiring major reconsideration of treatments.
A researcher at the University of Texas at Austin has identified a statistical method to select people for secondary security screenings more efficiently and fairly. Square root bias sampling can reduce resource waste by screening individuals from higher-risk groups less frequently while still prioritizing them.
Scientists have discovered a link between chronic inflammation and colon cancer, with the Stat3 protein playing a crucial role in tumor development. The study found that stimulation of Stat3 by inflammatory chemicals promotes cell survival and growth, leading to increased colonic tumor incidence.
Researchers found that Snail1 promotes tissue invasion and angiogenesis in cancer cells by stimulating fibroblast function. Fibroblasts without Snail1 are less able to degrade the extracellular matrix and form invadopodia, key structures for cell invasion.
Researchers discovered that adding extra copies of a gene makes a protective protein neutralize toxic chemicals in the brain, preventing cell death. This breakthrough could offer profound protection against neurodegenerative diseases like Alzheimer's and ALS.
Scientists from Denmark and Australia have established an error-free speed-reading record using a compact ultra-fast component, reaching 640 Gbps. The new technology allows for faster network speeds and opens the door to even higher data rates approaching terabits/second.
Researchers at Ohio State University found that people consistently estimated the length of road dashed lines to be only two feet, despite them being 10 feet long. This misperception has implications for traffic safety, as drivers may be underestimating their speed and covering more ground than they think.
Mammography utilization in the US declined slightly between 2000 and 2006, with 34 states showing a decrease, according to a CDC study. The decline ranged from -0.3% to -5.3%, with no clear pattern among states by region, age, income or population density.
A study found a significant increase in quinolone-resistant gonorrhea from 2% to 28% in Ontario between 2001 and 2006. Infections among heterosexual men are linked to the rising rate of resistance.
A modeling study reveals that Katrina-flooded homes can harbor hazardous contaminants in the air, posing significant health risks to residents and first responders. The study identifies inhalation exposure routes through volatile and semi-volatile organic pollutants, highlighting the need for better preparation and safety protocols.
A new study from the University of Minnesota finds that cellulosic ethanol has fewer negative effects on human health due to lower emissions of fine particulate matter. The study estimates that transitioning to cellulosic ethanol could reduce environmental and health costs by as much as half compared to gasoline.
A new study identifies miR-23 as a microRNA that regulates myelin formation and maintenance. By turning down lamin gene expression, miR-23 prevents demyelination due to lamin overexpression, offering a potential treatment for demyelinating illnesses.
A study by the University of Washington found that radiologists' perceived risk of malpractice lawsuits was four times higher than actual risk. This led to increased use of defensive medicine and potentially contributed to workforce shortages in breast imaging.
Researchers found little evidence that cataract surgery accelerates age-related macular degeneration (AMD) progression. The study also explored how people assess age and fatigue through gaze patterns, revealing the eye region as a key area of focus.
Researchers have discovered a gene expression signature associated with survival in advanced ovarian cancer. The study identified specific genes and pathways that correlate with overall survival, providing potential targets for therapies and personalized treatment strategies.
This issue of Cold Spring Harbor Protocols features two protocols: one for stem cell differentiation using the OP9-DL1 system, and another for RNA interference in plants using viral vectors. These methods provide new tools for understanding T-lymphocyte lineage commitment and gene silencing in plants.
Adolescents and young adults who are heavy users of marijuana are more likely to have disrupted brain development, according to a new study. The researchers found abnormalities in areas of the brain involved in memory, attention, decision-making, language, and executive functioning skills.
Dr. Dennis Hall's research reveals new ways to activate organic molecules, leading to significant uses for compounds like amides in pharmaceutical drugs. His work contributes to making chemistry more environmentally friendly by increasing efficiency and reducing waste.
A new study published in Psychological Science found differences in recovered memories of childhood sexual abuse, with some individuals prone to false memories and others forgetting earlier recollections. The research suggests that clinicians should consider the context of recovered memories to effectively treat patients.
Scientists have developed a new imaging technology that produces the best three-dimensional resolution ever seen with an optical microscope, allowing them to pinpoint fluorescent labels in all three dimensions. This breakthrough will help reveal how biomolecules organize themselves into cellular structures and signaling complexes.
Research identifies Interleukin 6 (IL-6) and STAT3 as key players in colitis-associated cancer development. The study suggests that targeting these proteins may be effective in preventing and treating CAC, a serious complication of inflammatory bowel disease.
The Office of Naval Research (ONR) has been selected by the Pentagon to manage a critical joint training program, known as FITE JCTD, which aims to develop realistic, live-action virtual environments for warfighter training. The program is expected to address joint, coalition and interagency gaps in training capabilities.
A study by Rutgers University scientists found that both humans and mice are proficient in assessing risk, challenging traditional views of human decision-making. The research suggests that risk assessment is a programmed cognitive mechanism that is present in many animals.
A study found that teenage media exposure was associated with depression symptoms in young adulthood, particularly among men. The researchers used data from the National Longitudinal Survey of Adolescent Health and found that participants who watched more television had a higher risk of developing depression.
A Canadian Medical Association Journal editorial warns of the dangers of excessive salt intake, citing that populations with very low salt consumption have no hypertension. The authors recommend a maximum daily intake of 2.8g for active young people and 2.2g for older adults.
A new study found that animal oocytes cannot fully reprogram adult human cells, making them unsuitable substitutes for producing patient-specific stem cells. The researchers tested using oocytes from cows, rabbits, and humans, but failed to achieve the necessary gene expression changes.
A study found that higher placental corticotropin-releasing hormone (pCRH) levels during pregnancy are associated with a greater risk of postpartum depression. The predictive capability of pCRH levels increased when midpregnancy depressive symptoms were also assessed.
UCLA researchers have created a non-invasive probe that enables real-time monitoring of chemotherapy drug activity in living bodies. This allows doctors to quickly pinpoint the most effective treatment and personalize it to each patient's unique biochemistry, reducing wasted time and toxic side effects.
A study by the USDA Forest Service found that aerial application of laminated flakes containing verbenone reduced mountain pine beetle attack rates by three-fold in California and Idaho. The technique could provide a large-scale solution to slow the spread of the beetles, which are devastating lodgepole pine stands across the West.
Researchers describe a technique to determine tumor blood vessel leakiness using digital mammography, allowing prediction of chemotherapy efficacy. The method is closely correlated with the ability of clinically approved chemotherapy agents to enter tumors.
Researchers at Monash University have made a breakthrough in treating malaria by deactivating the parasite's digestive machinery. The discovery could provide treatment for millions of people worldwide and offers hope against drug-resistant malaria.
A new study identifies a hotspot for toxic harmful algal blooms (HABS) in the Strait of Juan de Fuca, which can trigger blooms and force shellfish bed closures. The research aims to provide early warnings to protect human health and reduce economic losses due to biotoxin accumulation.
Researchers compared four different strains of Coxiella burnetii to build a comprehensive picture of its genetic architecture and content. They found that strain virulence was associated with a smaller genome and the loss of genes, possibly due to pseudogene formation.
Researchers discovered that idiopathic QT interval prolongation significantly increases the risk of sudden death among coronary artery disease patients. The study found a five-fold increase in odds for abnormally prolonged QT intervals of unknown etiology, highlighting its potential as a predictor for sudden cardiac death.
Cuba's comprehensive model emphasizes healthy development before conception, continued support through preschool education programs. Dr. Wilbert Keon suggests integrating polyclinics, collaborative programs, and research to optimize health and well-being in Canada.
Researchers at Duke University have developed a new technology that can detect how cancer cells respond to chemotherapy in just hours, rather than weeks. This allows for quicker diagnosis and potentially more effective treatment.
The Virginia Tech-CIMSS-PAC team develops a suite of new technologies to monitor bridge structural integrity. The proposed 'Bridge Prognostic System' uses piezoelectric materials and acoustic emission sensing to detect cracks, providing real-time data for decision-making.
A new technique combining CT with fiber-coated surgical microcoils successfully locates and removes small lung nodules using video-assisted thoracoscopic surgery. The procedure results in less pain and faster recovery times compared to traditional thoracotomy, allowing patients to return to work within two to three days.
A comprehensive hospital discharge program reduced re-hospitalizations by 30% and improved patient self-perceived preparation for discharge. New immunochemical fecal occult blood tests (FOBTs) vary in detecting colorectal cancer, with sensitivity rates ranging from 25% to 72%.
Researchers at Brown University have successfully grown and assembled living microtissues into complex three-dimensional structures, advancing tissue engineering. The breakthrough could eventually reduce the need for certain kinds of animal research, with implications for basic cell biology, drug discovery, and tissue research.
A new study published in Epilepsia found that vigabatrin treatment in infancy may be effective in reducing infantile spasms with a lower risk of permanent visual field defects compared to adults. The study used kinetic perimetry to detect peripheral field defects and found normal visual fields in 15 out of 16 children.
The September 11 attacks caused heightened levels of stress and anxiety, particularly among those closest to the World Trade Center. This stress impacted day-to-day behaviors like driving, leading to a significant increase in traffic fatalities in the Northeast region.
Patients with intermittent claudication may benefit from supervised exercise instead of revascularization. After six and 12 months, patients experienced similar improvements in functional capacity and quality of life scores.
New rodent findings show that dietary zinc supplements throughout pregnancy can reduce some alcohol-related birth defects. Zinc supplementation also increases the mother's blood zinc to prevent fetal zinc deficiency and subsequent fetal damage.
Researchers found that exposing bacterial colonies to the same chemical signals they use to fend off competition causes them to kill each other, reducing their population. This strategy is unlikely to develop resistance and may offer a new hope for fighting bacterial infections.
Peter Serlemitsos, a NASA astrophysicist, has made significant contributions to the development of X-ray detectors and telescopes. His work enabled decades of scientific advances in high-energy astrophysics, including pioneering instruments aboard OSO-8 and ASCA missions.
A study forecasts drastic reductions in mammography professionals per woman age 40, threatening early detection rates for breast cancer. The number of radiologists and technologists is projected to decline significantly over the next 15-20 years.
Experts advise against routine cardiac imaging exams for those without heart disease symptoms due to low-dose radiation risks. However, scans are still recommended for patients with symptoms or at high risk of heart disease, as the benefits outweigh the small potential risks.
Genes and psychological adversity in childhood contribute to major depression, with current treatments limited by delayed onset and adverse outcomes. Research is needed to explore how genes interact with environmental variables to influence major depressive disorder risk.