Researchers have developed a new all-optical-atomic clock that can keep time with greater precision than existing atomic clocks, by five orders of magnitude. The clock uses non-linear optical fibers to generate optical-frequency combs and determine frequencies by counting the number of teeth in the comb.
Researchers at the University of Minnesota are examining the effects of institutional care on brain-behavior relations. The study found that institutionalized children lagged behind those living with their families in cognitive, language abilities, behavioral adjustment, and neurophysiological indicators.
Similar efficacy responses were seen in both the 908/r regimens and the LPV/r regimen, meeting the primary endpoint of non-inferiority at 24 weeks. Patients achieved positive antiviral responses with both 908/r and LPV/r regimens.
Researchers found baby aspirin to be less effective in reducing the risk of stroke compared to adult and coated formulas. The study suggests that age and gender play a role in a person's response to aspirin, with women being more effective than men.
Researchers are using toxicogenomics to study the genetic and protein changes in individual breast cancer cells to assign effective drug treatments. This approach allows for more precise treatment options and earlier detection of toxicity, enabling doctors to make informed decisions.
The Phase III, 48-week NEAT study found that 66% of patients taking 908 achieved undetectable viral load compared to 51% on nelfinavir. The study also showed improved safety and efficacy profiles for 908, with lower rates of adverse events and virologic failures.
A new approach to brain angioplasty using local anesthesia with mild sedation safely performed on 10 patients, showing promising results in minimizing complications. The study found that the procedure was technically successful but resulted in three minor complications related to stenting and bleeding.
DuPont scientists have developed a bio-based method using corn instead of conventional petroleum-based processes to produce the latest polymer platform. The new process uses fermentation-based production of 1,3 propanediol, which is used to create DuPont Sorona polymer with unique technical properties.
Researchers found that ginseng compound increased brain chemicals associated with memory, improving average memory function after 12 weeks. The study, however, has limitations and recommends further research to establish efficacy and safety.
Researchers at University of Warwick develop innovative technology to produce hydrogen from natural gas in compact reactors, enabling efficient fueling of hydrogen-powered cars. The process employs novel heat exchange technology and nanocrystaline catalysts to increase efficiency and reduce emissions.
A Los Alamos researcher has calculated the frequency of meteor encounters with the atmosphere, finding that individual monitoring stations would see about five meteor signals a year. This research will help improve the accuracy and reliability of nuclear test detection systems.
The NIH is set to advance science and improve public health through a new initiative that focuses on multidisciplinary teams and cross-cutting initiatives. The plan aims to tackle pressing biomedical challenges by integrating multiple disciplines and addressing public concerns.
Researchers explore the concept of tribal warfare, revealing that revenge is a primary motive, often linked to deterrence, while social units strive for balance in losses and gains. The study of Waorani tribe in Ecuador suggests that a cultural understanding of revenge can be complex and nuanced.
A Penn State cartographer emphasizes the importance of careful color choices in visual representation to reveal relationships and patterns in complex data. An online web tool, ColorBrewer, provides pre-designed color palettes that cater to color blindness and are suitable for various mediums.
Research on montelukast treatment for reactive airway disease in infants with RSV bronchiolitis shows increased symptom-free days and nights, while study on exercise capacity in COPD patients reveals it as the best predictor of mortality.
A severe allergic anaphylactic reaction was triggered in a woman with shellfish allergy after kissing her boyfriend, who had eaten shrimp hours earlier. The incident highlights the importance of counseling patients to avoid exposure to food allergens through all potential routes, including kissing and touching.
A recent study found that neglect during infancy can have lasting effects on children's social and emotional development. Internationally adopted children who spent time in institutions exhibit difficulties with forming close bonds with parents and displaying wary behavior towards strangers.
Researchers discover new life forms living in extreme environments, such as gold mines and volcanic rocks, providing clues to the origins of life on Earth and potentially on Mars. These microorganisms may be using nuclear energy or toxic waste as fuel, shedding light on the diversity of possible fuel sources for life.
Adverse experiences in early childhood can lead to changes in brain structure, gene expression, and neurotransmitter function, increasing sensitivity to stress. This increased stress sensitivity is a significant risk factor for mood disorders and medical diseases.
Researchers studied Romanian and Russian children adopted by families in the US, finding they had normal intelligence but struggled with attention and sensory-motor skills. The study suggests that early childhood experiences can alter brain development and have lasting effects on physical and behavioral problems.
Researchers detected a sudden cooling of the star Rho Cassiopeiae in 2000, resulting in an unprecedented mass ejection into space. The star is now considered one of the brightest yellow hypergiants in the Milky Way, with a luminosity over half a million times that of the Sun.
A study analyzing data from a large ongoing stroke study found that living in an area with high poverty levels and unemployment is an independent risk factor for stroke. The finding holds true across racial groups, highlighting the need to rethink stroke-prevention programs and prioritize disadvantaged communities.
Researchers found that children living in orphanages for over eight months had elevated cortisol levels, while those adopted early did not. However, internationally adopted children from poor care showed no significant differences in cortisol levels.
The behavior of punishing others for their injury is widespread in the animal kingdom, with humans adding a conscious sense of what to achieve through revenge. This leads to complex social rules governing who can be targeted and when, often prioritizing balance over personal relationships.
Scientists have discovered new life in the deep ocean floor, specifically microbial methane makers that thrive on frozen methane hydrate. The team's research aims to develop realistic models of hydrate distribution and rate of formation in seafloor sediments.
Researchers have identified genetically superior cultivars of native grasses that can outcompete invasive species like cheatgrass. These findings could inform the development of effective re-vegetation strategies for burned and degraded lands.
Roscoe's research on New Guinea tribes suggests that revenge-driven wars are fueled by humans' unique ability to model actions and manipulate emotional states. This allows for the de-humanization of enemies, making it easier to justify violence.
University of Alberta researchers are working on a project to remotely scan and analyze core samples, allowing geologists to determine the type and quality of rock without physically inspecting them. This technology has the potential to improve mine safety, accuracy, and production by reducing the need for human intervention.
A model suggests that only coarse-textured soils can form fingers capable of moving deep into the soil, leading to inefficient water use and potential groundwater contamination. Laboratory experiments show that even small amounts of water can create persistent pathways in sandy soils.
The Merck/AAAS Undergraduate Science Research Program awards fifteen grants annually to qualified institutions in the US and Puerto Rico. The program aims to enhance undergraduate education through research experiences that bridge chemistry and biology.
A recent study found that combination hormone therapy increased the risk of stroke in postmenopausal women, including those with and without high blood pressure. The therapy was found to be ineffective for primary prevention of cardiovascular disease and heart attack.
Researchers have discovered a novel photoreceptor system in the human eye that controls melatonin production, which plays a key role in circadian rhythms. The study suggests that exposure to blue light at night may disrupt melatonin production and increase the risk of breast cancer.
Attitudes toward pharmacogenomics vary by education level, race, income, and age, but most people are willing to participate in genetic research. Respondents trusted medical institutions over government or pharmaceutical companies to perform the research.
The study found significant differences between Mexican Americans and non-Hispanic whites in conditions increasing stroke risk, such as diabetes and blood-thinning drug use. Understanding these differences can help tailor stroke-prevention campaigns to the Hispanic community, increasing their effectiveness.
Agent-based models reveal how simple interactions among individuals can generate complex social patterns, such as residential segregation and fads. Researchers use these models to study human behavior, including peer enforcement of norms and self-destructive behaviors.
A study found that higher alcohol consumption is associated with greater severity of barroom aggression, but not the initial likelihood of aggression. Environmental factors like dim lighting and encouragement from onlookers also play a significant role in severe brawls.
Studies have found that nerve cells in mature brains undergo metamorphoses and exhibit motility, reorganizing their structure to adapt to changing conditions. This discovery may have important implications for addressing diseases such as spinal injury by promoting recovery from synaptic abnormalities.
Researchers developed a model predicting water redistribution in soils following irrigation or rainfall. Coarse-textured soils exhibit finger formation, leading to deep chemical movement and potential groundwater contamination. Longer, less frequent watering may decrease fingering near the surface.
A new study uses tree ring chronologies to identify patterns of multidecadal oscillations in precipitation, linking them to ocean temperature shifts. The research suggests that the Great Plains, Rockies, and Southwest are prone to megadroughts when tropical Pacific and North Atlantic sea surface temperatures align.
Researchers are working towards individualized treatments using DNA chip technology to analyze gene expression and detect host genetic polymorphisms. This approach aims to optimize drug selection and doses at a molecular level, reducing toxicity and improving patient outcomes for childhood acute lymphoblastic leukemia.
Early Mars research suggests that the planet may have been too cold to melt water, contradicting Dr. James F. Kasting's theory of a greenhouse effect. However, Kasting proposes that methane-producing bacteria could have warmed the planet, allowing for the formation of features like Nanedi Vallis.
The Centralia, PA underground coal fire has been burning since 1962 and is still active today. Temperature measurements indicate the fire advances at an average rate of 66 feet per year, with some months showing little movement.
A new study by Cornell University researchers finds that selfish routing on the Internet can slow down data transfer by up to one and one-third times what could be achieved by an ideal system. To combat this, they suggest routers consider not only the least congested route but also its impact on the network when sending information.
A decade-long analysis of 500 families with Alzheimer's Disease suggests a future of early prediction and prevention. The findings lead to a new vision of medical care, applicable not only to Alzheimer's but also to other genetic disorders.
Researchers tested a combination of a vibrating vest and a mechanical cough-assist device to improve respiratory function in stroke patients. The treatment resulted in significant increases in forced vital capacity and minute ventilation, and improved oxygen saturation levels.
Biological differences in taste sensitivity have been linked to various health risks, including colon cancer and cardiovascular disease. Supertasters are more likely to avoid vegetables due to their bitter taste, but this may lead to a higher risk of certain cancers.
High school students from Philadelphia area participate in a youth engagement initiative, expressing concerns about the lack of discussion on current events. They also request better sex education programs and increased funding for schools, aiming to become active citizens who contribute to their communities.