Articles tagged with Temperature
Researchers analyzed electronic health records to determine heat exposure thresholds associated with emergency department use in vulnerable older patients. They found that heat-associated ED use among these patients spikes at around 90 F, not 95 F, and that targeted interventions can enhance their heat adaptive capacity.
Researchers investigated temperature-dependent sex determination in leopard geckos, finding that temperature influences sex development during a specific window of embryonic development. Early genetic changes, including the activation of male and female developmental pathways, occur before physical differences become apparent.
Researchers developed a new catalyst design using ethanol, achieving high nitrogen oxide removal efficiency at low temperatures. The new method improves the distribution of active catalytic components, leading to better performance.
The article discusses current evidence on risks of ambient heat to pregnant women, including hot weather and occupational exposures. Effective strategies for managing heat-related risks are also highlighted as critical for maintaining maternal health.
Research suggests a significant increase in suicide hotline calls during periods of extreme heat. Temperatures above the hottest 99th percentile have been linked to a 168% rise in crisis calls, highlighting the need for targeted interventions.
A recent rat study identified the neural mechanism underlying chills, a cold sensation that supports the body's response to infection. The findings suggest that prostaglandin E₂ boosts cold signals from the lateral parabrachial nucleus to the central nucleus of the amygdala, triggering chills and promoting warmth-seeking behavior.
A £3.7 million project aims to provide unprecedented analysis of mesophotic coral reefs' vulnerability to climate change and identify ways to protect them. The study will use state-of-the-art technologies to collect comprehensive data on biodiversity, health, and environmental parameters.
A new review highlights how high and extreme temperatures influence the ability of microorganisms to degrade microplastics. The study shows that heat can both accelerate and suppress microbial breakdown, depending on conditions and organisms involved.
Research found that children exposed to higher-than-usual temperatures were less likely to meet developmental milestones for literacy and numeracy. The effects were more pronounced among economically disadvantaged households, with access to clean water and urban areas.
Heat- and cold-related mortality burden in the US increased significantly between 2000 and 2020, with temperature extremes contributing to excess deaths. The study found that geographic location, cause of death, and demographic factors played a crucial role in differential vulnerability to temperature-related health risks.
Researchers found that elevated CO2 levels can cause leaf temperatures to rise by up to 1.3°C in forests, with a greater impact during extreme heatwaves. This change is likely caused by reduced transpiration and could have significant effects on the water cycle globally.
Researchers have developed a novel K⁺ and C <sub> 3 </sub> N <sub> 4 </sub> co-intercalated NH <sub> 4 </sub> V <sub> 4 </sub> O <sub> 10</sub> cathode for wide-temperature zinc-ion batteries. The innovation overcomes long-standing cathode limitations, enabling practical and scalable high-performance AZIBs.
Researchers at the University of Toronto have discovered that monolithic biochar can achieve exceptional strength and durability, comparable to mild steel. The study found strong correlations between hardness, bulk density, and carbon content, providing a quantitative foundation for tailoring biochar's performance.
Researchers found that heat transfer values increase dramatically at distances less than ten nanometres, exceeding theoretical predictions by a factor of one hundred. This phenomenon challenges current understanding of heat transfer in the nanometre range.
A research team led by Frank Geurts measured quark-gluon plasma temperatures at various stages of its evolution, providing critical insights into a state of matter believed to have existed just microseconds after the big bang. The study revealed two distinct average temperatures depending on the mass range of dielectron pairs, indicati...
Researchers developed an improved algorithm that reduces bias and error rates in satellite observations by integrating temperature-sensitive absorption of pure seawater. Temperature deviations of more than 10 °C can compromise accuracy, but the enhanced approach offers reliable monitoring across dynamic environments.
Researchers identified a 2–4 hour 'safety window' for flushing, where microbial diversity decreases and opportunistic pathogens like Legionella pneumophila begin to proliferate. Temperature plays a critical role in shaping microbial safety.
A new study by Florida Atlantic University researchers found that heat does not significantly affect the cognitive ability of sea turtle hatchlings. However, higher incubation temperatures negatively impact their physical traits, including shorter incubation durations, lower hatching success, and more frequent scute anomalies. The stud...
Researchers at Kumamoto University have developed a flexible solid electrolyte material with exceptional proton conductivity and hydrogen gas barrier properties, making it suitable for low- to mid-temperature fuel cells. The material enables stable operation across a wide temperature range, from -10 °C to 140 °C, and shows promise for ...
Exciton-polaritons in perovskites enable ultra-efficient photoluminescence, polariton lasing, and low-power laser applications. Perovskite semiconductors facilitate strong coupling at room temperature through simple methods, paving the way for robust and scalable photonic technologies.
Researchers at the University of Michigan have identified a complete sensory pathway for sensing cool temperatures, which is separate from the pathway for hot temperatures. This discovery provides insight into how the skin detects its surroundings and responds to environmental changes.
Researchers developed a universal approach to calculate liquid entropy using fundamental physical principles, achieving remarkable consistency with existing data. The new method predicts entropy accurately for various liquids, including sodium, and has significant implications for optimizing chemical reactions and material properties.
Researchers developed a Janus smart window that achieves dual electro-thermal collaborative control for improved thermoregulation, making it a promising solution for energy-efficient buildings. The innovative window offers superior thermoregulation capabilities, reducing energy consumption and enhancing environmental sustainability.
Researchers developed an anisotropic thermoelectric aerogel inspired by human muscle, enabling directional heat transport and electrical conductivity. The material converts heat gradients into electrical signals without external power, providing real-time temperature monitoring.
A 19-year study finds that 20,000 people died from heatstroke and 15,000 from cold exposure in India between 2001 and 2019. The study identifies working-age men as most vulnerable to heat-related deaths, highlighting the need for measures such as shaded parking areas and relief provisions.
A recent University of Georgia study found that a popular smartphone application frequently reports lower temperatures than direct on-site measurements, potentially leading to safety concerns. The app also underestimated the necessity of activity modifications to mitigate heat-related risks.
A new study reveals that winter sea surface temperatures in the Tasman Sea play a key role in influencing Antarctic Peninsula temperatures. Higher-resolution climate models better simulate atmospheric wave trains triggered by Tasman Sea SST changes.
MIT engineers developed ultrathin electronic films that sense heat and other signals, reducing the bulk of conventional goggles and scopes. The new pyroelectric thin film is highly sensitive to heat and radiation across the far-infrared spectrum, enabling lighter, more portable night-vision eyewear.
Research finds that pyrope garnet can retain up to 0.2 wt.% water, potentially dominating water transport via basaltic slabs into the lower mantle. The study also reveals strong pressure-temperature dependence of water solubility in pyrope garnet.
Scientists found that anaerobic microbes in wetlands can remove up to 70% of methane in oxygen-deprived soils, but their ability to do so is threatened by rising temperatures. When scientists simulated a hotter future, methane emissions spiked under hotter temperatures alone.
Researchers have developed a new material, coronene-Br2 NDA cocrystal, which converts solar heat into electricity with an exceptional photothermal conversion efficiency of 67.2% under 808 nm irradiation. The material is integrated into a thermoelectric generator to achieve high-performance solar-thermoelectric energy harvesting.
A new study by Hokkaido University found that colder temperatures significantly increase the risk of gastroenteritis among Rohingya refugees in Bangladesh's Kutupalong and Nayapara camps. The study reveals a link between temperature changes and gastroenteritis risk, with both extreme cold and heat contributing to higher numbers of cases.
Researchers at POSTECH developed a nickel-based high-entropy alloy that maintains strength and ductility across a wide temperature range from -196°C to 600°C. This stability is attributed to the presence of nanoscale precipitates, which inhibit deformation and accommodate stress through consistent slip behavior.
A study by the Barcelona Institute for Global Health found that Europe has adapted better to cold temperatures than to heat over the last two decades. The relative risk of death in low temperatures decreased by 2% per year, while the risk from extreme heat fell by 1% per year.
Koun Shirai bridges conventional physics and nonequilibrium materials to provide robust thermodynamic description of glasses. He redefines equilibrium as energy extraction impact, allowing tools of thermodynamics to apply to glasses.
A new UCLA-led study reveals that the Hunga Tonga-Hunga Haʻapai volcano eruption in 2022 actually cooled the Southern Hemisphere by 0.1 C due to the formation of smaller sulfate aerosols. This effect was more significant than initially thought and challenges geoengineering efforts to combat climate change.
Researchers at the University of Tokyo have developed a simple and cost-effective method to test lithium-ion battery safety, enabling researchers to quickly screen battery effects on safety factors such as materials, design, storage conditions, and degradation. The innovative method uses miniaturized batteries that are intentionally un...
A new study found that compound heatwaves significantly increase cardiac mortality and are more impactful than traditional binary definitions of heatwaves.
A Kobe University study found that temperature at the plate interface predicts earthquake type, while a specific plate shape causes a seismic gap. Water released from rock transformation explains slow slip events and tectonic tremors, reducing stress between plates.
A recent study reveals a decadal-scale increase in hot-dry events with high mortality risk in China, primarily affecting the northwestern and southwestern regions. The findings are associated with phase transitions of the Atlantic Multidecadal Oscillation and interdecadal variability.
Researchers at Baylor College of Medicine found that postpartum female mice prefer cooler temperatures due to changes in the preoptic area of the brain, particularly a decrease in estrogen receptor alpha neurons. These changes affect the animal's warmth-seeking behavior and are regulated by reproductive experience.
Researchers used ancestral sequence reconstruction to study the evolution of enzyme thermostability and cold adaptation. They identified key amino acid substitutions that enhanced catalytic activity at low temperatures, revealing a structural shift between intermediate ancestral enzymes.
Researchers at Kyoto University develop thermomajorization theory to unify different distance measures, eliminating ambiguities in previous studies. The approach reveals the Mpemba effect is not restricted to specific temperature ranges, but can emerge across a wide spectrum of thermal conditions.
Research uncovering rapid changes in river temperatures across the US highlights importance of observational records for environmental variability. The findings provide insights into managing habitats and understanding impacts on socioeconomic activities.
Researchers found that brook trout exhibit a genetic response to heat stress, with specific genes upregulated and downregulated in response to water temperature change. This adaptive mechanism may help the fish survive in warmer waters, but it also poses risks due to the increasing frequency and intensity of extreme weather events.
Research published in the European Heart Journal suggests that Australia's burden of cardiovascular disease caused by extreme heat will more than double by 2050. The study found that hot weather costs around 49,483 years of healthy life annually, with this number expected to increase significantly under climate change scenarios.
Scientists developed a novel solvatochromic fluorescent dye that enables high-precision temperature measurements through changes in fluorescence properties. The researchers achieved exceptional sensitivity and resolution, ideal for bioimaging applications.
A new study found that higher temperatures reduce the effectiveness of natural mosquito repellents by desensitizing their pain receptors. This means mosquitoes may find these substances less irritating in hotter weather, potentially leading to increased bites and disease transmission.
Scientists found large variations in surface temperatures, suggesting ice may be present near the lunar poles. A new model indicates areas with greater than 14° slope angle could be cool enough for ice to accumulate close to the surface.
Researchers found that some coral reef fish exhibit higher thermal tolerance in the Arabian Gulf's variable thermal environment, but overall biodiversity is lower. This suggests that only certain species can adapt to environmental changes, and highlights the need for further investigation into climate change impacts.
Researchers found differences in genes and brain wiring between forest and desert flies, explaining how climate change impacts insects. Forest flies show increased avoidance of heat, while desert flies are attracted to warmer temperatures.
Researchers found a correlation between solar heat and seismic activity, suggesting that incorporating solar activity predictions into detailed Earth temperature models can improve earthquake forecasts. This study sheds light on the role of solar heat in triggering earthquakes, potentially providing a more accurate prediction method.
Researchers from Carnegie Mellon University and UC-Riverside developed a system to monitor and analyze beehive health using sensors and forecasting models. The Electronic Bee-Veterinarian (EBV) uses real-time temperature data to calculate the hive health factor, helping beekeepers take corrective actions before colony collapse.
Researchers discovered that hot and burning droplets can bounce off cool surfaces due to the formation of an invisible air cushion. This phenomenon has potential applications in slowing fire spread and improving engine efficiency.
A study by Barcelona Institute for Global Health estimates that increasing green spaces in the city could prevent 178 premature deaths per year. The proposed Green Corridors plan would lead to a 3.64% increase in green space, reducing mortality rates and heat-related deaths.
Researchers found that turtles are nesting earlier in response to rising temperatures, with females advancing the start of nesting by 0.78 days per year since 1993. This shift is helping ensure egg hatching success despite elevated temperatures brought about by climate change.
Recent studies suggest that rising temperatures could disrupt the balance of Earth's climate by increasing plant water loss. In extreme heat, plants may lose too much water to conserve it, limiting photosynthesis and reducing their role as a carbon sink.
A team of researchers developed a smart jacket with environmental sensors, heat-generating yarns, and AI to monitor and regulate temperature. The jacket provides immediate temperature readings and color-changing yarns to indicate potential overheating.
The Antarctic midge employs a unique survival mechanism by undergoing quiescence in its first year and obligate diapause in its second. This adaptation allows the insect to quickly resume development when temperatures rise.
A Tel Aviv University study found urban bats have shorter pregnancies and start reproducing earlier due to favorable temperatures and food abundance in cities. This is the first study linking urban living to mammalian reproductive patterns.