Researchers have discovered that carbon isotopic compositions in IDPs are different from those on Earth and in other parts of the Solar System, indicating it was formed in molecular clouds before the formation of the Solar System. The findings help understand the Solar System's formation and the origin of organic matter on Earth.
Researchers analyze Martian flood channels, estimate Mercury's crust depth and simulate earthquake dynamics. New data also reveals details on sprites and interstellar hydrogen shadows.
Researchers used immersion lithography to create circuit lines and features at least as small as 45nm using 193nm equipment. This breakthrough allows manufacturers to create more powerful chips while extending the life of their current fabrication equipment.
A new study found that the birth control patch had a higher percentage of perfect dosing cycles (88.7%) compared to oral contraceptives (79.2%). This led to better contraceptive efficacy and reduced risk of unplanned pregnancy. The results suggest that the patch may be a more convenient and simple option for women using birth control.
NIST develops standardized emergency response software and proposes industry-government collaboration to enhance interoperability. The proposed Electronic Emergency Response Framework will provide decision-makers with easily accessible modeling and simulation tools.
A new map developed by the Wildlife Conservation Society predicts wolf attacks in Wisconsin and Minnesota based on road density, farm size, deer availability, and other factors. The maps identify high-risk townships with moderate to high risk of wolf attacks, which are clustered along the edge of the wolf population.
Researchers at Georgia Institute of Technology have developed seamless circular 'nanorings' made of piezoelectric zinc oxide. These structures can be used to test electrical and mechanical coupling at the nanoscale and offer unique properties for fabricating nanoscale electromechanical systems.
A team of researchers discovered two new dinosaur species in Antarctica, one a carnivorous theropod and the other a sauropod. The theropod's primitive characteristics suggest it may have thrived in Antarctica due to its unique environment.
The new 'Understanding Evolution' Web site offers a one-stop-shop for science teachers, providing practical examples and strategies for teaching evolution. The site features Evolution 101, a primer on evolutionary theory, as well as discussions on the nature of science and the history of evolutionary thought.
The University of Pennsylvania School of Medicine is conducting a smoking cessation study that will provide participants with medication and individual counseling. Volunteers must be at least 18 years old, in good health, and motivated to quit smoking, and are expected to participate for nearly one full year.
Astronomers have discovered the nearest and youngest star with a visible disk of dust that may be a nursery for planets. The dim red dwarf star AU Mic is about half the mass of the sun but only 12 million years old, and its dusty debris disk stretches around 210 astronomical units from the central star.
New research from NIST confirms that smoke alarms offer enough time to save lives in most cases, even with a three-minute warning. The study found that the placement of smoke alarms and closed bedroom doors can increase survival chances, but also noted the limitations of ionization and photoelectric alarms in detecting false alarms.
Researchers have taken advantage of a newly mounted laser guide star system at UC's Lick Observatory to obtain sharp, twinkle-free images of the faint dusty disks of distant massive stars. The images show that these stars form in the same way as solar-type stars inside a swirling spherical cloud.
Scientists have developed a new genomics tool that enables the efficient mapping of genome binding sites for transcription factors in human organs. This technology has been used to study the role of transcription factor HNF4 in type 2 diabetes, revealing its association with about half of all genes needed to make the pancreas and liver.
The Bridging the Rift Center will house the world's first databank of information about all living systems, gathering genetic sequences, ecological data, and global positioning information to quantify and characterize life. This groundbreaking facility aims to advance our understanding of coevolution, ecology, and DNA relationships.
Researchers discover IGF-1R inhibition significantly impacts tumor cell growth and sensitivity to chemotherapy, highlighting its potential as an anticancer therapeutic. Two selective inhibitors of IGF-1R are identified with potent antitumor activity against multiple myeloma and other hematological malignancies.
A study published in the Proceedings of the National Academy of Sciences found that monkeys' brains sort computer clip art pictures into categories for recall, such as people, buildings, flowers, and animals. This process could lead to ways to improve memory in humans by reducing detail and categorizing information.
Researchers found that smoke from forest fires delays cloud release, preventing moderate rain and causing thunderstorms instead. High-altitude clouds produce large hailstones on the Amazon rainforest floor.
A NIST scientist has demonstrated efficient production of single photons at the highest temperatures reported for a photon source. The advance is a step toward practical, ultrasecure quantum communications and useful for certain types of metrology.
Researchers at University of Utah developed switch-like valves made from organic materials, increasing electrical current flow by 40%. The innovation paves the way for new electronic devices, including computer chips and sensors.
Researchers at UT Southwestern Medical Center have established a pediatric pharmacology research center to study drug therapies in infants and children. The center aims to address the challenges of conducting pharmacological studies in pediatric patients, who process drugs differently than adults.
A new tool, CHIP-CE, assesses child health from their own perspective, predicting future healthcare use. The questionnaire is designed for ages 6-11 and has been shown to be reliable and valid in diverse areas of the US.
Researchers have discovered a new family of Atlantic corals using DNA analysis, revealing that about one-third of Atlantic corals are closely related but distinct from Pacific corals. This finding requires reevaluation of conservation priorities for threatened coral species in the Atlantic Ocean.
A study led by Massachusetts General Hospital found that infliximab can heal and reduce the recurrence of fistulas in Crohn's disease patients. The treatment, which targets tumor necrosis factor, showed significant benefits in closing fistulas and improving quality of life.
Researchers found that pulmonary hypertension, a complication of sickle cell disease, causes significant mortality in adults. A study of 195 patients revealed that up to 40% of those with the condition developed high blood pressure in their lungs, leading to premature death.
Researchers at Dana-Farber Cancer Institute have identified a protein, TRIM5-alpha, that blocks HIV replication in monkey cells. This discovery opens new avenues for intervening in early HIV infection and provides critical insights into viral uncoating, a little understood step in the viral lifecycle.
Researchers at Carnegie Institution grow synthetic brilliant cut single-crystal diamonds with ultrahigh pressures, breaking measuring equipment. The crystals are up to 50% harder than conventional diamonds, offering a breakthrough in materials science.
A groundbreaking study reveals a previously undetected divergence between Pacific and Atlantic corals, finding that about one-third of Atlantic corals constitute their own unique family. This discovery highlights the need to reconsider current conservation efforts due to the severe threats faced by this distinct group.
Researchers question current disease treatment theory, suggesting new treatments targeting neutrophil leukocytes instead. The study's findings could lead to a re-evaluation of antioxidant therapies and a shift in medical practice.
Researchers from Imperial College London and CNRS-Inserm-Strasbourg University have developed a technique to capture the protein-making factory, or ribosome, in action using cryo-electron microscopy. This will help scientists understand how many antibiotics interfere with the final steps of protein synthesis.
Researchers have identified TRIM5-alpha as a natural blocker of the HIV-1 virus, which could lead to new strategies for preventing infection that causes AIDS. The protein is found in human cells but is less effective than the monkey version, and its potency may vary among individuals.
A new study found that carbohydrate intake has a limited positive impact on muscle protein synthesis after resistance exercise, but not enough to achieve the desired effect. Muscle protein breakdown decreased and net balance improved in the carbohydrate group compared to the placebo group.
Researchers found adolescents exhibit lower activation in brain regions motivating behavior toward rewards, but similar responses to obtaining gains. The study resolves debates about adolescent reward processing and may explain why many young people struggle with long-term goals.
A study published in Ecology Letters reveals that aquatic ecosystems process carbon through the basal levels of their food chain significantly faster than terrestrial ecosystems. This means aquatic ecosystems are less capable of retaining carbon, especially under high CO2 conditions.
Scientists successfully transplanted embryonic pig pancreas cells into rats with diabetes, halting the disease without immune suppression drugs. The breakthrough could lead to a new treatment option for humans, bypassing challenges associated with human insulin-producing cells.
Researchers found that isoprene emitted by forest vegetation forms hygroscopic compounds affecting cloud formation, rainfall, and climate. The discovery demonstrates a link between isoprene emissions and water-soluble fine particles.
Researchers at Purdue University have precisely determined the energies needed to twist a molecule called tryptamine, which is closely related to serotonin and melatonin. This breakthrough could provide new insights into protein folding and lead to new approaches to develop computer memory devices.
Researchers have discovered a way to harness biomolecular mechanisms in marine sponges to produce semiconductors and photovoltaic materials. The discovery represents a low-temperature, environmentally friendly route to nanostructural fabrication of valuable materials.
A study quantifying incidental catch of loggerheads and leatherbacks in the global pelagic longline fishery reveals alarming bycatch rates. The authors estimate that thousands of hooked turtles die from longline takes each year, posing a significant threat to Pacific turtle populations.
Researchers at Boston Children's Hospital found that minocycline reduces later-stage tissue loss by blocking mitochondrial cytochrome c release, potentially improving quality of life for those with spinal cord injuries. The study suggests a novel post-trauma strategy using a safe, FDA-approved drug.
A study highlights the need for further thinking on research conducted in developing countries, where a majority of studies were not reviewed by local institutional boards. The survey found that 44% of respondents believed their studies were not reviewed, with concerns about cultural appropriateness and language consent forms.
A study by James Carrington and Steve Jacobsen reveals distinct classes of small RNAs in plants with specialized functions. These include genome maintenance, regulation of specific genes, and defense mechanisms, shedding light on the evolution of RNA-mediated gene silencing.
A new study by St. Jude/Mayo Clinic researchers found a direct link between the CBP gene and lymphoma development in mice, with the loss of CBP promoting T-cell lymphoma and cooperating with reduced p27Kip1 protein levels. The study suggests that CBP plays a role in cancer development despite normal p53 activity.
Researchers found that hormone replacement therapy (HRT) can lead to poorer hearing performance in women, especially in noisy environments. The study involved 32 women who had received HRT and compared their hearing with 32 women who had not.
A 26-week study found that topiramate significantly reduced monthly migraine frequency (-2.1 and -2.4 mg/d) and days with migraines compared to placebo. The medication also decreased rescue medication use, providing improved treatment outcomes for patients.
A study found that piercing ear cartilage increased the risk of infection compared to lobe piercing. The authors identified 7 confirmed Pseudomonas aeruginosa infections and 18 suspected cases, with most treated ineffectively with antibiotics.
The pilot plant uses electrolysis to produce high-purity hydrogen, with a purity exceeding 99.999 percent. The system also compresses natural gas for use as a motor fuel, reducing petroleum use and providing air emissions benefits.
Researchers at Hamilton College have found that atmospheric water clusters could play a key role in accelerating the Greenhouse effect. The team's calculations suggest that larger water clusters should be detectable in the lower troposphere.
The Eastern Tropical Pacific Seascape initiative protects 211 million hectares of marine habitat, including nesting grounds for the critically endangered leatherback turtle. The project addresses mounting evidence that the ocean is under duress, with 90% of large predatory fish populations and 75% of commercial fish populations at risk.
The giant catfish, a migratory species in Southeast Asia, is facing extinction due to the destruction of its habitats. Conservation efforts are underway to protect this vital species and the ecosystem it supports.
Critical care doctors have released the first-ever guidelines for sepsis, recommending more aggressive recognition and diagnosis, timely antibiotic therapy, and maintenance of adequate blood pressure. The guidelines aim to standardize clinical management of severe sepsis and reduce mortality rate by 25 percent.
Virginia Tech biologist Virginia Tyson earns top scientist award for his work in computational cell biology and mathematical models of molecular mechanisms controlling cellular growth and division. His research aims to understand and treat medical problems caused by molecular dys-regulation, such as cancer and nerve-cell regeneration.
The study found significant increases in methane emissions from thawing permafrost in Abisko, Sweden, potentially accelerating climate warming. Methane emissions have risen by up to 60% since 1970, with the ecosystem's sensitivity to temperature changes being rapid and dynamic.
Researchers propose a mechanism that helps uncommon species coexist with identical competitors, aligning with discoveries of cryptic fig wasp species. The evolutionary local mate competition theory is tested, revealing a demographic advantage to uncommon species.
The study found that patients who used home blood pressure monitoring were more likely to stop taking antihypertensive drugs and had lower costs, but also had less BP control. Self-measurement helped identify white-coat hypertension, supporting a step-wise strategy for evaluating blood pressure.
A study published in the American Journal of Obstetrics and Gynecology found that nearly all women take prescription medications (92%) and self-medicate with over-the-counter medications (96.5%). Researchers also discovered potential drug interactions, including those between antidepressants and herbal supplements like St. John's wort.
Researchers develop system to study small RNAs using siRNA inhibitors, providing unprecedented insight into RNA interference and microRNA functions. The technique enables rapid discovery of hundreds of microRNAs' regulatory roles, with significant implications for genetic studies.
Researchers Rampal Etienne and Han Olff propose a novel framework linking local community diversity to ancestral immigration patterns. Their approach sheds light on the relationship between biodiversity and genetic diversity in ecosystems.
A study published in Anesthesia & Analgesia found that patients who used E-TRANS Fentanyl HCI PCTS experienced better pain control and fewer withdrawals compared to those who received a placebo. The novel transdermal system, approximately the size of a credit card, allows patients to control their pain management without needles or pumps.
Early administration of reteplase plus abciximab did not reduce infarct size compared to abciximab alone in patients with acute MI referred for PCI. The study also found comparable clinical outcomes between the two treatment groups, but more major bleeding events occurred in the combination therapy group.