Nei's work has developed statistical methods to study genetic diversity, evolutionary relationships, and species divergence. He pioneered the neighbor-joining method for constructing phylogenetic trees, widely used worldwide.
Researchers developed a numerical model that explains the emergence of various patterns, including stone circles and labyrinths, through the interaction of two mechanisms: lateral sorting and squeezing. The relative strengths of these processes, along with factors like soil compressibility and stone size, determine the resulting pattern.
Researchers at McGill University have discovered a molecule that accelerates wound healing, providing a potential treatment option for millions of Americans suffering from burns and chronic skin ulcers. The growth factor progranulin has been shown to improve skin repair, offering new hope for individuals affected by these conditions.
Scientists found that the embryo uses L-selectin on its surface to bind with carbohydrate molecules on the uterine wall, leading to a complete stop and attachment. This discovery may provide information useful for treating infertility and potentially offer insight into preeclampsia.
Researchers found leptin significantly correlates with reduction in food intake and weight loss prior to developing EAE symptoms. Modulating leptin concentration through dietary approaches may have potential utility in treating MS and other autoimmune diseases.
A cross-sectional study of Tibetan adults found that low back pain is a significant problem, impairing health and productivity. Effective interventions, such as safer back positioning and flip-charts, can help reduce the burden of low back pain in rural societies.
A study published in Science reveals that Toxoplasma parasites can rapidly adapt to new hosts, allowing them to infect a wide range of animal species and spread worldwide. This discovery raises the possibility of other parasites undergoing similar changes, potentially presenting new threats of infection.
A rapid diagnostic test for plague has been developed to detect antigens at low concentrations within 15 minutes of infection. The test is 100% sensitive and reliable, detecting more infections than conventional laboratory assessments and providing opportunities for bioterrorism preparedness and response.
Research at the University of Minnesota suggests that magnetic field lines, similar to a slinky, can produce energy waves that accelerate electrons toward Earth. These waves are sufficient to power auroras, which occur in ring-shaped patterns around the poles.
Researchers have discovered a new source of stem cells in the umbilical cord, which can be obtained through a non-invasive method. The cord matrix stem cells have been shown to differentiate into neurons and glia, exhibiting telomerase activity and producing nerve-cell specific traits.
Researchers have made significant progress in understanding the effects of HIV protease inhibitors on atherosclerosis, as well as exploring novel gene therapies for epidermolysis bullosa. Additionally, studies on CXCR4/CXCL12 interaction reveal new insights into hematopoietic stem cell mobilization.
Researchers found that a molecular sticking process stops the embryo's journey along the uterine wall and starts attaching it to the wall, creating a sticky environment. The discovery of L-selectin protein helps to understand human embryo implantation and may prove useful to treat infertility.
Columbia University has established a new cross-disciplinary graduate program with a $2.9 million NSF grant, focusing on applied mathematics and Earth sciences. The program aims to equip students with both mathematical skills and deep understanding of environmental issues.
The UCSB team has developed a reversible switch for surface design, allowing for dynamic regulation of macroscopic properties. The technology uses alkanethiolates to create nanometer-thin interfaces that can be controlled as a function of space and time.
The Office of Naval Research is developing a suite of technologies to help sailors and Marines avoid mines during amphibious landings. The systems, including Moving Map, Augmented Reality Visualization, and Expeditionary Warfare Decision Support System, aim to reduce the risk of accidents by providing real-time navigation data.
Scientists have discovered that ancient birds used a unique 'wing-assisted incline running' behavior to help them climb vertical surfaces, which may be the key to explaining how dinosaurs learned to fly. This behavior, found in modern-day birds, involves rapid movement of the front appendages to gain foot traction as it climbs.
The Navy's new concept, FORCEnet, focuses on integrating long-haul networks, knowledge management tools, and wireless technologies to support warfighters in the field. This initiative aims to provide real-time information advantage and enhance combat operations.
A new study reveals persistent gender inequalities in the Philadelphia region, with women facing lower median incomes and overrepresented in low-paying jobs. The report also highlights the disproportionate burden of caring labor on women, which contributes to their lower earnings.
A survey of 1,069 high school students found that teens consider 'avoiding environments with alcohol' and 'talking with friends or other informal supports' as effective strategies to cut back on drinking. Formal counseling was more useful for quitting than reducing drinking, according to the teens.
Scientists at British Columbia's Children's Hospital reveal a method for directly measuring the level of self-destructive white blood cells in mouse blood, distinguishing those that go on to develop diabetes from those that do not. The technique may also be used to detect other autoimmune disorders.
Researchers at MIT create a switchable surface that can change from water-attracting to water-repelling by applying an electric field, with potential applications in drug delivery and biomedical engineering. The surface's properties are controlled using conformational transitions, allowing for reversible modification.
Researchers found that recombinant activated factor VIIA significantly reduced blood loss during abdominal prostate removal surgery. Patients given the drug required no blood transfusions, whereas those receiving placebo did.
A new study from the Liverpool Diabetic Eye Study has proposed optimal screening intervals for diabetic eye disease, based on incidence data. The findings suggest that patients with no baseline retinopathy should be screened every 3 years, while those with background retinopathy can be screened annually.
Researchers have identified two microorganisms, Fusarium and Pandoraea spp., that can degrade the toxicity of endosulfan, a persistent organic pollutant. This breakthrough offers a potential solution for detoxifying contaminated sites, reducing toxic residues in soil.
Scientists discovered that early mammals used epipubic bones to stiffen their bodies during trotting steps, allowing for increased mobility and locomotor efficiency. This finding suggests that the development of these bones contributed significantly to the evolution of mammals.