New research indicates that the Medicare Modernization Act of 2003 has not led to significant changes in patient wait times or travel distance for chemotherapy treatment. The study found that the number of patients traveling farther for chemotherapy remained stable after 2003, with no major increases in wait times.
Researchers tracked bird flight patterns using radar and found that some birds fly in tandem even when 200 meters apart, suggesting active social behavior.
Scientists have made direct measurements of the solar wind termination shock using Voyager 2 data, which could help understand how cosmic rays are produced. The observations reveal intense plasma wave turbulence and unexpected effects, sparking revisions to theories.
Researchers at Rice University have created giant millimeter-sized atoms resembling Bohr's atomic model, with electrons behaving like classical particles for several orbits. The achievement has potential applications in next-generation computers and studying quantum chaos.
Researchers at the University of Texas at Austin found that internal waves can generate intense currents when traveling along continental slopes, lifting sediments and contributing to ocean mixing. These currents, called boundary flows, also play a role in larger ocean currents by bringing cold water up from the deep ocean.
A University of Missouri professor found that men conducting field research on women are limited to specific subjects due to restrictions on access. The Diola people's culture and rituals, such as their fertility shrine Ehugna, were difficult for male researchers to study due to social norms and expectations.
A new oral formulation of vitamin B12 has shown promise in improving absorption rates without the need for invasive injections. The eligen technology has been tested in animal studies and is currently being conducted in human trials.
Numerical earthquake models are providing a means to understand physical processes and predict earthquakes, reducing damage and loss of life. Simulations show that surface-rupturing earthquakes absorb more seismic energy than buried ones, resulting in less ground shaking.
A new method of generating high-power signals at frequencies up to 1.16 THz has been proposed, potentially replacing X-rays for medical imaging and security applications. The technique uses nonlinear constructive interference on an ordinary silicon chip.
A recent study published in JAMA found that patients who received medication escitalopram or participated in a problem-solving therapy group had a lower risk of depression compared to those who received placebo. The annual incidence of stroke exceeds 700,000 in the US, with depression occurring in over half of these patients.
Researchers found evidence of a large ornithopod dinosaur and a herd of 11 sauropods walking together at the same speed. The site preserved footprints that provide insights into dinosaur herding behavior, a rare example of social behavior for reptiles.
Researchers found evidence of a large ornithopod dinosaur and a herd of 11 sauropods walking together along a Mesozoic coastal mudflat in Yemen. The discovery provides insight into dinosaur herding behavior, with the trackways preserved in rocks likely dating back to the Late Jurassic period.
Researchers discovered over 50 types of visual illusions that help us perceive the present moment. Assistant Professor Mark Changizi organized these illusions into a 'periodic table' that can predict a broad pattern of future seeing powers.
Researchers developed a device to measure complex ultrashort light pulses in space and time at the focus of lenses, addressing distortions caused by optical components. The SEA TADPOLE system uses interferometry to determine pulse shape and intensity changes in space and time, enabling accurate correction for aberrations.
A recent study reveals that approximately 2.1% of US youth aged 14-21 exhibit problem gambling behaviors, projecting to around 750,000 young problem gamblers nationwide. The study also found significant correlations between increased gambling involvement and transitioning into adulthood.
Astronomers find nine young, compact galaxies with masses of 200 billion times the Sun's, each only 5,000 light-years across. These ultra-dense galaxies formed 11 billion years ago and are thought to be building blocks for today's largest galaxies.
A new study found that young and homeless drug-users are more likely to exit treatment early, with nearly a quarter exiting within 30 days. Problem users who are younger, homeless, or not currently injecting face significant barriers in traditional drug services.
Theoretical physicists discovered that measuring quantum particles causes interference, leading to a 'relaxed' state analogous to classical chaotic scattering. This finding has implications for quantum computing and information theory.
A University of Virginia study finds that air pollution destroys flower scents by up to 90 percent, impairing pollinators' ability to locate flowers. This decline in fragility contributes to the declining populations of bees and butterflies, which are essential for food production.
During WWII, physiologists developed altitude chambers to study high-altitude effects on humans. They trained animals to parachute and discovered techniques to prevent decompression sickness and hypoxia. These innovations paved the way for pressurized aircraft and safer air travel.
The galaxy proto-cluster LBG-2377 is the farthest ever detected, offering a glimpse into the universe's infancy when its light was emitted. Scientists believe it may grow into a massive galaxy cluster, born from a catastrophic event with gas and matter collapsing.
Scientists created pairs of entangled photons using a twisted optical fiber, demonstrating the 'spooky action at a distance' predicted by quantum theory. Their results rule out nonlocal hidden variables theories and confirm quantum mechanics' predictions.
Researchers discovered that diabetes drives inflammation and slows blood flow, accelerating atherosclerosis through interference with ERK5 signaling. The study identifies advanced glycation end products (AGEs) as key molecules sabotaging this protective mechanism.
Brown University professor Peter Schultz presents findings from Peruvian meteorite research, discovering a 49-foot-wide crater and planar deformation features indicating the meteorite maintained high speed during atmospheric entry. The study's implications for Mars craters and extraterrestrial object sizes challenge conventional wisdom.
Researchers will study how germs change when exposed to space, potentially leading to new strategies for prevention and treatment of diseases. The experiment aims to confirm earlier results on Salmonella's increased virulence in space.
Researchers have created a three-dimensional model describing the seismic anisotropy and iron crystal texture within Earth's innermost core. The study revealed an inner inner core with a diameter of approximately 1,180 kilometers.
Researchers found that viruses infecting bacteria in the region are unrelated to their counterparts globally, with only 5% shared DNA sequences. This contradicts previous studies suggesting widespread dispersal and uniformity of viral genotypes worldwide.
Researchers found that, when jazz musicians improvise, a large portion of the brain's prefrontal region 'takes 5' to let creativity flow. This shutdown allows for novel ideas and impulses to emerge. The study suggests this brain pattern is key to highly creative thought.
A new seismic model reveals that earthquakes at Mount St. Helens are caused by a resonating fluid-filled crack filled with steam, driving a small explosive eruption if the pattern is disturbed. This finding challenges the previous stick-slip model and provides a more detailed understanding of the volcano's behavior.
A team of researchers from Ames Laboratory has developed a novel add-drop filter using three-dimensional photonic crystals, which enables efficient sorting and distribution of multiple wavelength channels over optical fibers. The technology promises to enhance data transmission with near 100% efficiency.
A new mathematical model has identified minimizing antibiotic treatment duration as the optimal strategy for controlling hospital-borne antibiotic-resistant bacteria epidemics. By starting treatments early and administering drugs for shorter periods, the risk of cross-infection by resistant bacteria can be significantly reduced.
A new study contradicts a prevailing belief about otoacoustic emissions, revealing they travel through fluid in the inner ear rather than rippling along the basilar membrane. The findings offer insight into hearing loss and could lead to the development of tools to detect damage.
A new hybrid vehicle, powered by the heat differences in the ocean, has successfully completed its first oceanic test drive. The 'thermal glider' harvests heat energy to propel itself across thousands of kilometers of water, offering a virtually unlimited energy source for propulsion.
Researchers aim to create flapping-wing aircraft that can hover and perch, like birds and bats, which outperform man-made planes in efficiency. By studying the aerodynamics of natural flyers, engineers hope to develop vehicles capable of performing missions in uncertain environments.
Researchers identify nerve that transmits signals of chemotherapy-associated illness from small intestine to brain, offering new approach to reduce debilitating side effects. Anorexia and cachexia often accompany chemotherapy symptoms, compromising patient's nutritional status.
Researchers use a foot-long model in a quiet wind tunnel to study airflow over the X-51A vehicle, focusing on turbulent flow into the engine's combustor and smooth airflow over the upper surface. The findings will aid in designing vehicles that can fly at hypersonic speeds, reducing friction and heat generated during flight.
Researchers identified a critical role for the hormone adrenomedullin in forming the lymphatic system, which could lead to new treatments for lymphedema. Targeting this hormone may also prevent cancer cells from spreading through lymphatic vessels.
Researchers at UCLA have successfully captured and measured the statistical properties of optical rogue waves, which are brief pulses of intense light. The study's findings may help develop mathematical models that can identify conditions leading to rare but extreme events in various fields.
A study by Michelle L. Roehm and Michael K. Brady found that high-equity brands initially face a disadvantage after failure, but may fare better when the issue is severe. This phenomenon can be attributed to a reduction in cognitive resources, allowing customers to focus on resolving the problem rather than re-evaluating the brand.
Scientists investigate Hanford's vadose zone to understand contaminant migration and develop remediation solutions. They find complex pathways for nuclear waste travel, affecting composition and speed, impacting the environment and people downstream.
A USC study found that driving in LA can expose people to harmful air pollutants for up to half their day. The biggest contributors are diesel-fueled trucks on freeways and hard accelerations on surface streets.
Recent high-resolution images from NASA's Mars orbiters show extensive evidence of ice-made features on the planet's surface, including glacial debris and valley deposits. The findings suggest a dynamic history of Martian climate change, with water ice playing a key role in shaping the planet's geology.
A new bus scheduling algorithm, developed by a University of Southern California engineer, aims to reduce waiting times and improve transit reliability. The algorithm analyzes the impact of slack time on buses and finds that building in between 15 and 20 percent slack time is optimal, depending on total round trip travel time.
Researchers at MIT have made significant advances toward a novel therapeutic device that can selectively provide signals to cells traveling through the bloodstream. The technology leverages cell rolling, a biological process that slows down cells as they flow through blood vessels, allowing them to sense signals from nearby tissues.
Researchers have developed a computer solution to cut journey times of courier services, reducing fuel consumption and improving timely drop-offs. The new approach uses a heuristic-based model that can process real-time requests and re-route vehicles to minimize distance traveled.
Researchers found that West Nile virus can spread through nerve cells, breaking into the central nervous system and triggering acute flaccid paralysis. Injection of a therapeutic antibody blocked both encephalitis and paralysis in laboratory animals.
A new modified plastic material, known as thermally rearranged (TR) plastic, has been developed to separate carbon dioxide from natural gas more effectively. The TR plastic works four times better than conventional membranes at separating out carbon dioxide through pores.
Scientists at NRL capture first images of a comet colliding with a solar hurricane, revealing the detachment of the comet's tail due to coronal mass ejection. The event is triggered by magnetic reconnection, releasing energy and detaching the plasma tail.
A NASA satellite has captured the first-ever images of a comet's plasma tail detaching from Encke's comet due to a coronal mass ejection. The event was triggered by magnetic reconnection between the comet's and solar wind fields, releasing a burst of energy that detached the tail.
Brookhaven researchers developed a compound kinoform lens to surpass the critical angle limit, enabling efficient focusing of x-rays down to extremely small spots. This breakthrough advances nanoscience, energy, biology, and materials research with potential applications in alternative-energy technologies and new drug development.
Youth with shared deviant values in high-quality friendships spend more time discussing negative topics, leading to higher levels of problem behavior. Conversely, lower-quality relationships are associated with better behavioral outcomes.
A research team has discovered forests of endangered tropical kelp in deep waters near the Galapagos Islands. The find suggests that marine ecosystems may be more resilient to climate change than initially thought, with kelp forests potentially harboring unique biodiversity.
A study by University of Illinois researchers found that eye movement can influence problem-solving success. By manipulating eye movements, participants were able to outperform control groups in solving a problem. The findings suggest that eye movements can not only reflect but also affect cognitive processes.
Researchers at UC Davis developed ConceptDoppler, a tool that clusters words by meaning and identifies keywords likely to be blacklisted in China's censorship system. The study found that keyword filtering encourages self-censorship due to the perception of surveillance, allowing users to avoid blocked topics.
Researchers have identified two key proteins, cadherin 23 and protocadherin 15, that join together at the precise location where sound vibrations are converted into electrical impulses in the ear. This discovery sheds light on the hearing process and may lead to more precise therapies for treating people with hearing loss.
A recent study by economists at the University of Missouri-Columbia and Vanderbilt University found that linking teacher pay to student achievement results in improved student outcomes. The researchers advocate for school districts to explore performance-based systems as a potential solution to increase teacher effectiveness.
Researchers at Cornell University have created a mathematical model to describe the internal clock in living beings, which regulates sleeping and waking patterns. The study proposes that an extra protein may be necessary for the circadian cycle to extend over 24 hours.
The quality of giant bluefin tuna caught in the Gulf of Maine has declined significantly since the early 1990s, with potential changes in food sources and reproductive patterns. Researchers found that the condition of those fish caught is of much lower quality, with reduced fat content and a leaner appearance.
Research found that patients traveling farther to reach their physician are more likely to have thicker skin cancer at diagnosis. Longer distances were associated with increased Breslow thickness, and rural locations and lack of dermatologists in the area also contributed to poorer outcomes.
Wildlife experts from WCS and FAO argue that keeping wild animals separate in wildlife markets can prevent disease outbreaks. Closing these trade hubs could significantly reduce the threat of emerging diseases like avian flu.