New research at UC disrupts conventional wisdom that people take cocaine for positive reinforcement, suggesting a pharmacological equation behind the behavior. The study suggests low doses produce reinforcing effects, while high doses have rate-limiting effects, revealing a shift in understanding of cocaine self-administration.
A recent scientific study explores the bite marks left on ancient bones of sauropod dinosaurs like Diplodocus and Brontosaurus by carnivorous theropod dinosaurs. The study found that 68 sauropod bones from the Upper Jurassic Morrison Formation bear unmistakable bite traces attributed to theropods.
Researchers have identified a tiny hinge in coronavirus spikes that allows them to tilt and bend. This bending affects how successfully the spike can infect a cell. The study suggests that disabling the spike's hinges could be a good strategy for designing vaccines and treatments against a broad range of coronavirus infections.
EPFL researchers have developed the world's first large-scale in-memory processor using 2D semiconductor materials, which could substantially cut the ICT sector's energy footprint. The processor combines data processing and storage onto a single device, reducing energy waste and improving efficiency.
Researchers found that dyadic bicultural competence, the ability to navigate both cultural contexts, is associated with relationship quality. Couples with higher levels of this competence tend to experience fewer relationship challenges.
A study of US neighborhoods found a strong association between environmental burden and higher rates of cardiovascular risk factors and diseases. Socially vulnerable neighborhoods showed the strongest associations, highlighting the need for initiatives to address poor environmental conditions and improve cardiovascular health.
A recent study found that most cannabis users (80%) have stopped using over-the-counter or prescription sleep aids and instead prefer inhaling high-THC cannabis to help with falling asleep. The study also showed that cannabis users experienced fewer headaches, nausea, and dry mouth compared to traditional sleep aids.
A new study on visual masking reveals the brain's role in perception and points to a region necessary for conscious awareness. The research shows that unconscious sensation can turn into conscious perception in the brain, with implications for understanding visual awareness.
The Max Foundation has started treating three patients with advanced breast cancer, including a CDK4/6 inhibitor therapy, in Mozambique. This marks the first time this treatment is available in low-income countries and aims to improve outcomes for women living with advanced breast cancer.
Researchers have created a new analytical method to identify and measure small microplastics in the environment. The technique combines flow cytometry with pyrolysis gas chromatography mass spectrometry to characterize and count these tiny particles, providing a more complete picture of their abundance and type.
A research team led by Konrad Meister discovered that small proteins are involved in efficient ice formation, outperforming larger proteins found in other organisms
A new study from the University of Houston reveals a significant association between positive childhood experiences and lower binge-eating disorder characteristics, as well as higher scores for intuitive eating. College students with fewer positive childhood experiences were more likely to exhibit disordered eating behaviors.
A team of researchers developed a gel delivery system that overcomes challenges in intratumoral therapy. The gel contains an imaging agent and can hold a high concentration of drug for slow release. In preclinical models, the treatment induced tumor regression and improved survival in immunotherapy-resistant colon and breast cancer.
A long-term study published in Environmental Epidemiology shows a slightly increased incidence of cancer, particularly colon, pancreas, and stomach cancer in men, as well as lymphoma in women. The researchers used new calculation methods to analyze radiation doses from Chernobyl fallout.
A team of researchers proposes a novel representation learning method based on an integrated autoencoder for unsupervised domain adaptation. They introduce a sparse autoencoder to combine inter- and inner-domain features, improving performance and minimizing deviations in different domains.
A new AI method combines satellite imaging and ecological analysis techniques to interpret large amounts of data from tumor tissue, providing insights into how cancer works. This approach aims to tailor cancer treatments to individual needs and avoid unnecessary side effects.
Research with contemporary hunter-gatherer societies found infants receive attentive care from up to 15 different caregivers for about nine hours a day. High levels of sensitive care and personal attention are crucial for mother and child wellbeing, supporting maternal care and reducing risks of neglect and abuse.
A study found that bone scans overstage prostate cancer at initial staging, leading to potential withholding of definitive therapy from patients. PSMA PET is more accurate than CT and bone scans for staging patients with prostate cancer.
Researchers found that pollutants in green sea turtle eggs can feminize broods, increasing the risk of extinction due to a lack of males. The study suggests that climate change and pollution may be driving this trend, which could have severe consequences for the species' survival.
Researchers developed a water-based emulsion adhesive that can be separated by acidic or alkaline water, making it ideal for recycling. The glue's reversible nature enables efficient detachment of labels from bottles, reducing waste sent to landfill.
The study analyzed over 1.2 million criminal incidents, revealing that specialists tend to operate within a confined geographic area and collaborate with local networks. The method can help law enforcement agencies anticipate criminal developments and tailor measures for prevention, policing, and rehabilitation.
A new strategy that trains healthcare providers to deliver team-based care has been found to significantly lower blood pressure in low-income patients compared to usual care methods. Patients treated by the multi-faceted approach saw a mean systolic blood pressure drop of 16 mmHg, while those in the usual care group saw a 9 mmHg drop.
A team led by Lehigh University's Yahong Rosa Zheng is developing an Autonomous Observatory Node that can collect and transmit data from underwater sensors wirelessly, without the need for expensive subsea cables. The prototype aims to operate at depths of up to 1000 meters, enabling researchers to study extreme environments and detect...
Researchers found that beta-glucanase improves nutrient digestion, promotes a healthier gut microbiota, and enhances chicken growth and health. The enzyme broke down beta-glucan, reducing the need for antibiotics and other medications while increasing feed efficiency.
Deepak Srivastava, president of Gladstone Institutes, has made significant original and sustained scientific contributions advancing cardiovascular science. His laboratory has deciphered new ways to generate cardiac cells that repair heart damage, translating into novel approaches for treating disease.
Researchers have created a reliable and efficient method to add fluorine to molecules, increasing pharmaceutical drug efficiency. The iron and sulfur-based reaction enables the release of fluorine from carboxylic acids and its incorporation into alkenes, common building blocks for drugs.
The U.S. Department of Energy and French Alternative Energies and Atomic Energy Commission have signed a Statement of Interest to launch the Electron-Ion Collider, a unique facility for exploring matter's building blocks. The agreement aims to strengthen international collaboration and future contributions to the EIC project.
Researchers established a framework for how polyubiquitin chains regulate condensate formation in cells, shedding light on the mechanisms behind neurodegenerative diseases like ALS. The 'Goldilocks Effect' found that specific spacing between ubiquitin units optimizes condensate formation.
A new conservation tool, Lion Localizer, helps authorities track the origin of illegally traded lion parts by analyzing mitochondrial DNA. The tool provides critical information on population impact and resource allocation, supporting efforts to protect tiny West African lion populations.
A new training algorithm enabled the brain-like system to learn and improve continuously, achieving higher accuracy than conventional machine-learning approaches. The system's ability to process multiple streams of data simultaneously makes it promising for tasks like pattern recognition in complex data.
Researchers discovered a bitter taste receptor in sharks, similar to the one found in humans. This finding provides insights into the evolution of bitter taste perception, dating back around 500 million years.
Researchers propose a novel approach to customize metal-organic frameworks (MOFs) for efficient membrane separations. The strategy involves modularizing custom defect-free MOF separation membranes, allowing for rapid production of high-performance membranes.
Researchers at Tokyo University of Science developed nanostructured hard carbon electrodes using inorganic zinc-based compounds, which deliver unprecedented performance and significantly increase the capacity of sodium- and potassium-ion batteries. The new electrodes improve energy density by 1.6 times compared to existing technologies.
A 20% reduction in major adverse cardiovascular events has been observed for patients with obesity but no history of diabetes taking semaglutide. This study marks a significant milestone, demonstrating the cardiovascular benefits of semaglutide beyond its weight loss effects.
A new study reports that antiviral medications are largely underused in young children diagnosed with influenza, highlighting opportunities for improvement in prevention and treatment. The study found low rates of antiviral use across all age groups, including a significant disparity in geographic regions.
A new study suggests that diverse forests can capture approximately 226 gigatonnes of carbon, enough to make a meaningful contribution to slowing climate change. Restoration efforts should include a natural diversity of species and sustainable agricultural practices to maximize their potential.
Researchers created a blood-based test to detect both diseases, measure viral and bacterial loads, and track treatment progress. The test aims to improve patient outcomes by catching immune reconstitution inflammatory syndrome (IRIS) earlier.
A new study found that Black women who reported experiencing racism in employment, housing, and interactions with police had a 38% increased risk of stroke. Racism may act as a psychosocial stressor, elevating systemic inflammation and impairing endothelial function, contributing to racial disparities in stroke incidence.
The study found an increase in breastfeeding initiation and duration among US children from 1999 to 2018. Higher rates of breastfeeding were observed among male infants, older mothers, Mexican American participants, and households with higher incomes.
A study found that 20% of patients treated with nirmatrelvir-ritavir (N-R) experienced virologic rebound, a phenomenon where viral load increases after initial decline. In contrast, only 1 untreated patient was affected. The researchers suggest considering the risks and benefits of N-R treatment in patients at low risk for severe disease.
Researchers developed a handheld, wireless biosensor to detect Alzheimer's and Parkinson's biomarkers from saliva and urine samples. The device has shown high accuracy comparable to existing state-of-the-art methods.
A team of researchers, including Arizona State University scientists, reveals that surface water can penetrate deep into the Earth's core, altering its composition and creating a distinct thin layer. This discovery suggests a more extensive global water cycle than previously recognized.
A new study reveals that melatonin use is increasing among US children and adolescents, with nearly 1 in 5 school-aged children taking the hormone for sleep. The study found that parents are giving melatonin to preschoolers without proper regulation, raising concerns about safety and efficacy.
A randomized clinical trial of 2,858 patients with new-onset and worsening chronic heart failure shows that torsemide and furosemide have no significant difference in clinical or patient-reported outcomes at 12 months. Torsemide is associated with better outcomes for patients with de novo heart failure.
Researchers have identified a small molecule that reverses four types of chronic pain in animal studies without troublesome side effects. The compound, CBD3063, binds to the inner region of a calcium channel, indirectly regulating its activity and reducing neurotransmitter release.
Researchers are exploring immune-based therapies and curative combinations to overcome HBV's unique biology and immunosuppression. Ongoing clinical trials aim to develop a functional cure with finite treatment duration.
Researchers at Princeton University found that an ammonia economy can help achieve decarbonization goals, but it poses risks if not managed properly. The widespread use of ammonia could lead to significant emissions of nitrous oxide and nitrogen oxides, affecting air quality, water quality, and ecosystems.
A research team developed a modularized catalytic system using covalent organic frameworks and commercial Cu2Cr2O5 to mimic enzyme active sites, achieving enhanced activity in transfer hydrogenation reactions. Hydrogen bonds between COFs and isopropyl alcohol facilitate dehydrogenation and promote hydride transfer.
Research by Dominik Stolzenburg reveals that aerosols from volatile organic substances can cluster together to form condensation nuclei for water vapor. This process affects cloud density and global warming, potentially offsetting the effect of CO2 increases on climate change.
A study published in Scientific Reports investigated physiological explanations for glare experience. Researchers found that macular pigment density may not explain variations in people's glare perception, particularly under neutral daylight conditions.
A new study by Cleveland Clinic researchers reveals significant differences in cell communication between breast tissue with and without BRCA1/2 gene mutations. This discovery provides a foundation for personalized medicine approaches to prevent and treat breast cancer in mutation carriers.
A team of scientists has detected signals directly from the smaller (secondary) black hole in the binary system of Blazar OJ 287. The discovery provides evidence for two separate signals contributing to the total light signal, confirming OJ 287 as an ultramassive binary black hole system.
A new study published in The Journal of Finance and Data Science introduces the topological tail dependence theory, a methodology for predicting stock market volatility. The approach incorporates persistent homology information, enhancing the accuracy of models and detecting complex correlations.
A new study has provided neurophysiological evidence for videoconference fatigue, a feeling of tiredness and alienation caused by prolonged video-based communication. The study found that video conference-based lectures exhausted test subjects more than traditional in-person lectures.
Researchers developed a deep convolutional neural network to pinpoint cardiac catheter tip locations in photoacoustic images, achieving high precision and recall. The approach has the potential to replace fluoroscopy during cardiac interventions, leading to safer procedures.
Researchers found that acupuncture improved symptoms in patients with chronic spontaneous urticaria (CSU), but the benefits were not significant enough to meet the minimal clinical difference threshold. The study included over 300 participants and suggested that clinicians should consider using acupuncture as an adjunctive treatment.
A team from HZDR has developed proposals for an improved laser experiment designed to verify vacuum fluctuations, which could potentially provide clues to new laws in physics. The experiment involves manipulating the vacuum fluctuations with ultra-powerful laser flashes.
Researchers found that anthropogenic climate change heightens risks of spatially compounding flooding and heatwave events, with likelihood increasing tenfold by mid-21st century under high-emissions scenario. Adopting low-emissions scenario could reduce this likelihood to seven times more probable.
A new study found that curtailing sleep by 90 minutes for six weeks increased insulin resistance in women, particularly postmenopausal women. Insulin resistance was also linked to an increased risk of developing type 2 diabetes.
Researchers used AI models to analyze rat brain cells and found they can process high-level visual information like primates. This discovery sheds light on the visual system of rodents and has implications for understanding neurodegenerative disorders.