A team of researchers from the University of Toronto has developed a method to precisely control the placement and ordering of photonic crystals on surfaces, paving the way for the creation of photonic microchips. This breakthrough could enable faster data transfer rates in optical communications systems.
The U.S. Civilian Research and Development Foundation (CRDF) has established the Georgian Research and Development Foundation (GRDF), the Republic of Georgia's first independent grant-making science foundation. The GRDF aims to develop the country's scientific-engineering community through merit-driven research support.
Scientists at the Netherlands Organization for Scientific Research created a more stable silicon layer than traditional amorphous silicon, allowing for faster production. This breakthrough reduces production costs of flat-panel displays and solar cells, potentially benefiting manufacturers and the semiconductor industry.
Human neural stem cells transplanted into normal mice and reeler mice showed symmetrical migration in the former but failed to migrate in the latter. This suggests that protein reelin plays a critical role in directing stem cell migration, potentially underlying schizophrenia's distorted perception and thinking.
Researchers at The Geisel School of Medicine at Dartmouth have identified a genetic switch that turns on a program to destroy leukemic cells and potentially other tumor cells. This target gene, called UBE1L, mimics the action of retinoic acid, which causes remissions in acute promyelocytic leukemia.
Researchers found that watching classic horror films improved reasoning and intelligence, while anxious moods hindered performance on difficult tasks. The prefrontal cortex region was jointly influenced by mood state and cognitive task, suggesting a regulatory role in integrating emotional signals with cognition.
A study of South Asian Canadians found they presented late to hospital, were more likely to have diabetes, but less likely to be smokers than non-South Asians. Despite these differences, the two groups had similar MI mortality and in-hospital outcomes.
A study has shown that chilling causes changes in the platelets' outer membrane, leading to the formation of lipid rafts. This process is a general first step in platelet activation, which can lead to blood clots and heart attacks.
Researchers have discovered genetic variations associated with high blood pressure, enabling a predictive test for hypertension risk. The test detects GRK4 protein variations linked to sodium elimination errors, significantly increasing lifetime risk.
The study found that physician judgment had a sensitivity of 89% and specificity of 26% for the Ottawa rules, and 80% and 59% for the Leiden rule. With structured data collection, physicians' judgment was similar to existing ankle rules in terms of sensitivity and ability to safely reduce radiographic examinations.
Scientists at the University of Illinois developed a lensless X-ray microscope that can image microscopic crystals in three dimensions. This technique offers potential for studying nanocrystalline materials and protein crystals, providing new insights into their growth mechanisms.
A study by the University of Toronto found that patients' knowledge and behavior improve with baccalaureate-educated home care nurses. The research analyzed factors influencing the cost and quality of home care services, revealing a correlation between nurse education and client progress.
The study reveals that street food vendors rely on consumer demands for hygiene, which has limited impact. Despite this, the food remains an important source of nutrition, particularly for the poorest workers.
Researchers at the University of California, Davis, predict that lithium borocarbide can be a superconductor at temperatures as low as minus 280 F. They propose using 'field-effect doping' to modify the material, which could lead to better performance than existing superconductors like magnesium diboride.
The European CanCer Organisation's Dr Robin Wilson says current evidence supports breast cancer screening's effectiveness in reducing mortality, but acknowledges drawbacks such as false positives and anxiety for women. Countries with full national screening programmes have seen significant benefits, including improved quality of care.
Research reveals husbands of fibromyalgia sufferers experience more depression and loneliness but have similar physical health scores as those with healthy wives. Despite these findings, the men's overall psychosocial well-being is comparable to that of the control group.
Researchers discovered that hamsters have higher levels of immune cells in their bloodstream during winter months and in response to acute stress. This enhanced immune response helps the animals prepare for potential injury or infection.
A University of Toronto study finds that immigrants receive on average half to two-thirds less in earnings for their educational and work experience than native-born Canadians. To address this issue, a better 'mutual orientation' between immigrants and employers is needed, says Professor Jeffrey Reitz.
The researchers fabricated superconducting nanowires from specially prepared fluorinated carbon nanotubes, which are insulators. This technique allows for the fabrication of even thinner nanowires and sheds new light on superconducting phase transitions.
A recent study found that women undergoing bypass surgery experience less improvement in depression, shortness of breath, and health-related physical limitations compared to men. Women also reported a more negative evaluation of their surgery and recovery process.
Researchers have developed a new x-ray technique called diffraction enhanced imaging (DEI) that can image cartilage and detect early stages of osteoarthritis. This technology has the potential to improve diagnosis and treatment of the disease, which affects over half of the nation's elderly.
Researchers found that thrombocytosis correlates with more aggressive ovarian cancer and poorer response to treatment. Patients with thrombocytosis had higher CA-125 levels, advanced stage disease, and greater tendency of cancer spread.
A study by Duke University researchers found that poor patients are more than twice as likely to die of severe heart disease compared to those with higher incomes. After adjusting for differences in treatment, poverty remained associated with a worse outcome, suggesting that post-hospital factors such as smoking and non-adherence to me...
A commonly prescribed medication for treating endometriosis appears to elevate the risk of ovarian cancer, according to a new study. Women taking danazol were nearly three times more likely to develop ovarian cancer than those taking leuprolide, an anti-androgenic medication.
A recent study found that nearly 11% of participants with internet gambling experience were classified as problem or pathological gamblers, compared to only 22% without internet gambling. Internet gamblers tended to be younger, unmarried, and have lower education and income levels than non-internet gamblers.
Researchers previously thought mature nerve cells couldn't regenerate after damage. However, a new study reveals that altering naturally occurring compounds can restore regenerative ability in mature cells. The study's findings offer hope for developing new treatments for optic and spinal cord disorders.
Research suggests that older eyewitnesses are more prone to making false identifications, especially those aged over 69. This is particularly concerning for age groups used in identification parades, calling into question the effectiveness of mug-shots in identifying potential criminals.
A Penn State study found that disasters like Hurricane Hugo increase marriages, births, and divorces in affected areas. The study analyzed marriage, birth, and divorce records in South Carolina before and after the hurricane, finding a significant increase in all three life changes in disaster-affected counties.
A new study reveals that rats with chronic pain from inflammation were more tolerant of painful heat stimuli and had less swelling when fed a diet based on soy protein. The findings suggest that a soy diet may reduce the need for opioid medications, which are often associated with severe side effects.
The institute will revamp the system for collecting generation reports, prepare white papers on wind energy potential and problems, and establish a program to map out California's wind resources. Data on wind resources is over 20 years old, highlighting the need for better forecasting.
Researchers at the University of California, Davis have discovered how antifreeze glycoproteins interact with ice, preventing ice crystals from growing and preserving liquid water around the protein. This discovery may lead to safer storage for food or blood products and help scientists understand biomineralization.
A University of Michigan study found that adolescent girls who feel confident about their physical abilities enjoy exercise more than those who doubt their skills. The research, led by Nola Pender, suggests that girls' perceptions and responses to exercise are linked to their confidence levels, with more confident girls reporting less ...
Researchers at The Scripps Research Institute develop a new drug-discovery strategy using click chemistry to create a potent inhibitor against the enzyme acetylcholinesterase. This breakthrough allows the target enzyme to select and catalyze its own synthesis, resulting in a highly effective treatment for Alzheimer's disease.
A study shows that black teen girls who rarely talked to their parents about sex and STD prevention were less likely to report condom use. Parents can help motivate their daughters to discuss safe sex techniques with partners, according to researchers.
A study of 641 older women with hypertension found that ACE inhibitor users had slower declines in walking speed and muscle strength. The results suggest that these drugs could be used to delay disability in older adults, potentially improving their quality of life.
A UCSF study found that high cholesterol levels are associated with poorer cognitive performance in elderly women. Using statins to lower cholesterol levels was linked to improved cognitive skills, suggesting a potential benefit for preventing Alzheimer's disease.
A new study found that sustained caffeine intake counteracts the benefits of creatine supplementation, reducing muscle relaxation time and fatigue. This means that consuming high amounts of caffeine over a short period can negate the effects of creatine on exercise performance.
A new study published in Cancer Epidemiology, Biomarkers and Prevention suggests that dietary habits can significantly reduce colon cancer risk in individuals with a family history of the disease. Eating a diet high in folic acid, low in alcohol intake, and moderate in methionine may help lower this risk.
A study of 224 children found that young children were more likely to acquire H. pylori infection, particularly those from black communities. Early childhood appears to be the critical period for acquiring most infections, and racial differences may impact the risk of developing related health issues.
A new study published in Science supports the idea that Asia was the center of origin for key groups of modern mammals, including primates and hooved mammals. The research allows paleontologists to compare fossil sequences from Asia, Europe, and North America during a dramatic period in Earth's history.
Researchers have identified a key gene that increases the risk for drug abuse, affecting not only alcohol but also nicotine. The 'AA' configuration of the mu-opioid gene was found in nearly 90% of individuals with substance abuse issues.
Researchers have identified 31 novel microRNAs and their associated protein complexes. The discovery reveals a possible link between the pathway of miRNA activity and the progression of spinal muscular atrophy, a common childhood neuromuscular disorder.
The Phoebe R. Berman Bioethics Institute at Johns Hopkins University is establishing a Genetics and Public Policy Center with a $9.9 million grant from the Pew Charitable Trusts. The center will explore policy options for reproductive genetic technologies, including gene selection in humans.
Researchers have successfully established a cell line that functions like adult human mammary stem cells, opening up new avenues for studying breast cancer and tissue regeneration. The discovery was made by Dr. Ole William Petersen and colleagues from the University of Copenhagen and Lawrence Berkeley National Laboratory.
A new study found that alcohol and nicotine interact in the brain's dopamine system, suggesting a link between the two addictive behaviors. Rodent studies showed that combining alcohol and nicotine increased dopamine release, while blocking nicotinic effects with mecamylamine reduced alcohol's pleasurable effects.
A study published in the Journal of Applied Physiology found that ultra-long-distance runners experience a decline in maximal voluntary force capacity due to central fatigue, but also exhibit strengthened twitch mechanical responses and unaltered M-wave characteristics.
Recent research in social informatics reveals that information and communication technologies often have unintended outcomes, such as harming group communications and exacerbating social differences. The studies highlighted the need for frameworks to expose value conflicts embedded in ICT design, but these are not widely practiced.
Researchers have found that innovative soil fertility replenishment programs can increase crop yields by two- to four-fold, providing strong evidence for their effectiveness. The programs use natural resources available in Africa, such as trees and rocks, to replenish nutrients depleted from the soil.
A recent study found that subspecialists working outside their subspecialty cared for 25% of hospitalized patients, resulting in longer lengths of stay and higher mortality rates. Patients seen by these physicians had an average length of stay up to 18% longer than those cared for by general internists.
A Harvard research team studied human running on various surface stiffnesses, finding a 12.5-fold decrease in surface stiffness led to a 12% decrease in metabolic rate and a 29% increase in leg stiffness, with support mechanics remaining unchanged.
Research found that African-American women with ovarian cancer are at a 30% increased risk of death from any cause compared to Caucasian women. The study also revealed significant differences in tumor stage, lymph node involvement, and surgery rates between the two ethnic groups. Median survival times were also shorter for African-Amer...
A Baylor College of Medicine study found that Helicobacter pylori infection is most common among children under 10, with an estimated 24.5% infected by age 18-23. The average age of first infection was 7.5 years, and over 84% of infected children remained infected during adolescence and young adulthood.
A recent study found that heightened depressive symptoms, emotional eating, and low self-esteem can predict binge-eating disorders in teenage girls. The research also revealed that low peer support increases the risk of binge eating, while parental support has no effect on this issue.
A new study suggests that galanin, previously thought to be detrimental to Alzheimer's patients, may actually enhance acetylcholine release from remaining cholinergic basal forebrain neurons. This compensatory role could delay disease progression and inform the development of galanin antagonists as a potential treatment option.
Researchers at North Carolina State University challenge dominant linguistic theories of African-American English, proposing a new model based on African-based Creole language and regional dialects. Their research, conducted in Hyde County and the Appalachian Mountains, reveals similarities between black speech and African influences.
Researchers found that mice lacking the SHIP gene survived allogeneic bone marrow transplants without rejecting the graft or experiencing graft-versus-host disease. The study suggests a novel approach to preventing and treating this life-threatening reaction, potentially increasing the availability of bone marrow donors.
Researchers at Baylor College of Medicine discovered a common flaw in the dystrophin protein that causes dilated cardiomyopathy, leading to enlarged heart chambers. Using ventricular assist devices can restore the protein's function and improve heart pumping, offering new hope for patients.
New research examines how managed care affects access to alcohol and drug treatment, highlighting the need for clear guidelines and accountability. Studies show that prior authorization requirements can set up barriers to timely treatment and that longer retention rates are associated with more positive outcomes.
A simple immunochromatographic assay detected specific antibodies in the blood of untreated coeliac patients, with high accuracy and speed. The test can be done in a doctor's surgery and is useful for screening patients with untypical symptoms or risk factors for coeliac disease.
The Swedish trials indicate a significant reduction in breast cancer mortality among women given mammography screening, with the greatest benefit seen in age groups 60-69 years. The trials found no significant difference in death from all causes between screening and control groups.