By using a special design and the principle of anti-reflective layers, researchers have made graphene visible on gallium arsenide. This achievement enables the measurement of electrical properties of the new material combination, paving the way for further research and development in electronics.
A University of Toronto study reveals climate change will reduce UV radiation in northern high latitude regions such as Siberia, Scandinavia and northern Canada, while increasing it in other areas like the tropics and Antarctica.
Researchers found that three common houseplants significantly reduced indoor ozone concentrations in a simulated environment. The study suggests using plants as a cost-effective tool to mitigate indoor air pollution, especially in developing countries where expensive technology may not be feasible.
Researchers at the University of British Columbia have developed a system that turns harmless bacterium Caulobacter crescentus into a protein production factory, making useful proteins for vaccines and therapeutic purposes. The technology could be used to manufacture HIV-blocking agents cheaply and with minimal expertise.
Nitrous oxide emissions from human activities have surpassed those of chlorofluorocarbons (CFCs), threatening the ozone layer. The NOAA study found that nitrous oxide will continue to erode the ozone layer for many decades.
PortLand is a fault-tolerant, layer 2 data center network fabric capable of scaling to 100,000 nodes and beyond. It provides baseline support for virtual machines and migration while reducing administrative overhead, and leverages multipath routing and improved fault tolerance.
New research suggests geoengineering techniques may cause more harm than good due to uncertainties in their effects on Earth's natural cycles. Ecologists debate the viability of geoengineering methods like atmospheric seeding and ocean fertilization, highlighting potential risks such as ozone depletion and dead zones in oceans.
Researchers found that even at low ozone concentrations, healthy individuals can experience significant decreases in lung function after moderate exercise. The study suggests that healthier individuals may exhibit individual variability in their responses to ozone, with some showing strong sensitivity while others are less affected.
Researchers find that nitrogen oxides combine with hydrochloric acid to create chlorine atoms, speeding up smog formation and contributing to corrosion indoors. This phenomenon should be added to atmospheric models to better predict air pollution levels.
A recent study found that climate change models may underestimate the impact of changing atmospheric chemistry on water runoff. The researchers discovered that increased concentrations of carbon dioxide and ozone in the atmosphere and nitrogen in the soil can lead to a 17% increase in forest runoff in eastern US forests.
High ozone conditions decrease oilseed rape yield by 30% and increase toxic glucosinolate compounds, affecting crop resistance and animal fodder quality. This could lead to significant income loss for farmers and impact human health in future climates.
The study found that hydrofluorocarbons (HFCs) will become an increasingly larger factor in future climate warming if business-as-usual trends continue. By 2050, HFC emissions could contribute 7-12% to climate change, exceeding CO2's current contribution.
Researchers at the University of Pittsburgh have developed a fluorescent probe that glows bright green when exposed to ozone, a harmful pollutant and lung irritant. The probe's sensitivity and specificity make it a potential tool for monitoring indoor and outdoor ozone levels, as well as studying its effects on the human body.
Researchers found a layer on top of subducted plates where S-waves are 30-50% slower than typical oceanic crust, indicating high water saturation levels. This ultra-slow-velocity layer is linked to slow earthquakes and non-volcanic tremors, providing clues about their causes.
Researchers from British Antarctic Survey and NASA found that the ozone hole has strengthened surface winds around Antarctica, leading to greater flow of cold air over the Ross Sea. This resulted in a small increase in sea ice extent in West Antarctica, contrary to the expected effects of greenhouse gas increases.
New research suggests climate change will impact ozone recovery rates due to changes in atmospheric circulation. Greenhouse gases alter the Brewer-Dobson circulation pattern, influencing ozone distribution and leading to uneven ozone layer recovery.
Future rocket launches will lead to significant ozone layer depletion if unregulated, potentially exceeding losses from chlorofluorocarbons. The study estimates that rocket emissions could result in more ozone destruction than CFCs by 2050.
Research highlights coral reefs' decline due to rising CO2 levels and ocean acidification. Ocean proximity also exacerbates ozone pollution in Houston by increasing reactive chlorine mass. New measurements reveal the impact of nitryl chloride on ozone formation, with significant increases observed.
A new simulation reveals a future where nearly two-thirds of the Earth's ozone is depleted, leading to extreme UV radiation and severe skin cancer rates. The study used a comprehensive model to simulate the consequences of banning ozone-depleting substances, confirming the effectiveness of the Montreal Protocol.
A nationwide study found that long-term exposure to elevated ground ozone significantly raises the risk of dying from lung disease. The risk is more than 30 percent greater in metropolitan areas with high ozone concentrations compared to those with low concentrations.
A nationwide study found that long-term exposure to ground-level ozone is associated with a 25-30% greater annual risk of dying from respiratory diseases. The study followed nearly 450,000 people for two decades and covered 96 metropolitan regions in the US.
Researchers found that ozone treatment can relieve herniated disk pain by reducing disk volume, resulting in improved pain and function outcomes. The treatment's complication rate is less than 0.1 percent and recovery time is significantly shorter compared to surgery.
A Purdue University researcher has developed a device that uses high-voltage coils to create ozone inside sealed food packages, killing harmful bacteria such as E. coli and salmonella. The process eliminates the need for external devices or added ingredients, making it a potential game-changer in ensuring food safety.
Researchers have detailed the molecular structure of Clostridium difficile's protective 'jacket', a surface layer that helps the pathogen colonize human gut cells and cause illness. Understanding this structure could lead to new treatments, including targeted drugs and vaccines, to combat the deadly superbug.
A new study suggests that climate change could postpone the recovery of stratospheric ozone in tropical and southern mid-latitudes, leading to increased skin cancer risks for fair-skinned populations. This delay might be caused by changes in air circulation patterns and reduced ozone formation.
Researchers discovered a new cause of airway irritation and wheezing after exposure to ozone, a common urban air pollutant. They found that high amounts of hyaluronan, a sugar molecule, are responsible for narrowing the airways.
Long-term measurements of atmospheric gases suggest that air masses are moving more slowly than expected, potentially impacting ozone layer recovery. Researchers urge further study to understand the exact mechanisms behind this phenomenon and its implications for climate models.
A meta-analysis of decades-long experimental evidence reveals that modern day concentrations of ground level ozone pollution are decreasing tree growth in northern and temperate mid-latitudes. The study predicts a 17% reduction in tree growth by the end of the century if current fossil fuel dependence continues.
A new study by scientists at the National Center for Atmospheric Research finds that wildfires can boost ozone pollution to levels violating US health standards. The research focused on California wildfires in 2007 and found that they repeatedly caused ground-level ozone to spike to unhealthy levels across a broad area.
Researchers found a novel connection between high levels of air pollution and the risk of appendicitis, with patients approximately 15% more likely to be hospitalized on days of highest ozone concentrations. The effect was strongest during summer months, when people were more outside.
Researchers found two independent ways to modify metal work function using self-assembled monolayers, improving device characteristics. The study also showed that different metals have virtually identical work functions when covered with the same type of organic molecules.
Researchers find large amounts of ozone being destroyed over the tropical Atlantic Ocean, potentially leading to increased greenhouse gas methane. The discovery was made using data from the Cape Verde Atmospheric Observatory and has significant implications for future climate predictions.
A new study suggests that closing the ozone hole may reverse Southern Hemisphere climate change, contrary to predictions made by IPCC models. The closure of the ozone hole is expected to decelerate tropospheric winds and potentially lead to a reversal of climate change in the region.
Researchers will discuss climate models, air pollution, ozone levels, and their impact on regions like California, Texas, and the southeastern United States. Scientists also explore long-range transport of pollutants from Europe to Africa and the Near East.
Researchers at Eindhoven University of Technology and Fraunhofer Institute achieved an unprecedented 6% improvement in solar cell efficiency by depositing a thin layer of aluminum oxide on the front of a silicon solar cell. This breakthrough brings the industrial application of high-efficiency solar cells closer, with costs expected to...
New research suggests that injecting sulfate particles into the stratosphere to cool the planet would have a drastic impact on the ozone layer. The study finds that such an approach might delay the recovery of the Antarctic ozone hole by decades and cause significant ozone loss over the Arctic.
Scientists predict that a full ozone hole recovery could modify climate change in the Southern Hemisphere, causing Antarctica to warm like the rest of the world. As stratospheric ozone levels recover, atmospheric circulation patterns and air temperatures above 6 miles high could rise by up to 16 degrees Fahrenheit.
A new study finds that sea salt and urban/shipping pollution combine to create a highly toxic mixture of ground-level ozone and pollutants in coastal areas. Researchers detected unusually high levels of nitryl chloride, a key contributor to air pollution, where these two pollutants meet in the southeastern US.
A limited nuclear weapons exchange between Pakistan and India could create a near-global ozone hole, with mid-latitude ozone decreases reaching up to 40 percent. This would have huge effects on human health and ecosystems, with potential rises in cataracts, skin cancer, and damage to plants and animals.
A chemical reaction in the atmosphere above major cities is a significant contributor to urban ozone and smog, according to UC San Diego chemists. This new mechanism involves reactions between water vapor and NO2, producing OH radicals that attack hydrocarbons and form nitrogen dioxide.
Researchers at the Alfred Wegener Institute found that stratospheric ozone chemistry significantly influences the Arctic Oscillation, leading to changes in atmospheric air flows and temperature distribution. This basic knowledge is crucial for improving climate models and reducing uncertainty in simulated climate developments.
Biologists have elucidated a plant gene controlling atmospheric ozone entry, helping explain why CO2 levels may not increase photosynthesis. The discovery provides a new tool for geneticists to design plants with drought resistance by regulating stomatal pores.
A new study reveals that individuals with higher body mass index (BMI) experience greater drops in lung function after acute ozone exposure. The research found that underweight individuals have lower ozone-related drops in lung function, while overweight and obese individuals exhibit the greatest declines.
Research published in Occupational and Environmental Medicine suggests that high temperatures increase the risk of cardiovascular death from heart disease or stroke. Ozone levels are a common link between temperature fluctuations, with higher ozone levels associated with increased cardiovascular mortality.
Ozone intrusions are associated with sudden changes in tropopause altitude, damaging forests and crops. The study uses windprofilers to monitor ozone movements, highlighting the need for a better understanding of the role of human activities in atmospheric pollution.
A CCNY-led team has received a $330,000 NSF grant to develop a tactile surface facilitating communication between visually impaired and blind persons and computers. The project aims to create an affordable device that can convey graphic information in real-time through touch.
A study published in the Journal of the National Cancer Institute found that treatment with a vitamin A derivative called retinoic acid reduced the growth of lung cells in former heavy smokers. The researchers also found that the treatment slowed down cell growth in the parabasal layer of lung cells, but not in the basal layer.
A recent MIT study warns that increasing levels of human-generated ozone will damage global vegetation, particularly crops, resulting in significant economic costs. By 2100, crop production is projected to decline by 10-12 percent, with the most affected regions being northern temperate areas.
Studies in mice reveal that ozone exposure enhances lung injury in response to bacterial toxins and boosts programmed cell death in innate immune system cells. This can lead to an overactive immune response, killing key immune cells and potentially making the lung more vulnerable to subsequent invaders.
The Montreal Protocol has been a resounding success, with chlorine compound levels leveling off and beginning to decline. Researchers study climate change and the timing of ozone recovery through space-based instruments and computer models, aiming to ensure CFC emissions fall below levels that produce an ozone hole.
CABI's work with the European Commission significantly reduced methyl bromide usage in the EU, from 5.7 million kg to 0.5 million kg, setting a precedent for global pesticide reduction.
Interactions between ozone and body oils can lead to the formation of chemical byproducts that worsen nasal irritation, headaches, and other air traveler complaints. The study suggests simple steps like installing ozone-destroying catalysts can help reduce these byproducts in aircraft and buildings.
Researchers at Durham University are developing light-absorbing materials for thin-layer solar photovoltaic (PV) cells to convert light energy into electricity. The goal is to make solar panels more affordable and increase the use of solar power.
A team of atmospheric chemists found high concentrations of halogens, including bromine and iodine oxides, which persist throughout the Antarctic winter. These chemicals cause substantial ozone depletion and form tiny particles that can impact local climate.
A new study published in Nature finds that increasing surface ozone near the Earth's surface can lead to significant reductions in regional plant production and crop yields. This could undermine the ability of plants and soil to slow down global warming, as they currently store about a quarter of human carbon dioxide emissions.
A NASA airborne expedition will investigate how chemical compounds are transported into the stratosphere, affecting cloud formation and climate. The mission aims to document the life cycle of widespread clouds and understand their impact on a warming climate.
Scientists from NOAA's Earth System Research Lab will conduct a field study in Costa Rica to observe the troposphere during the rainy season. They aim to understand key processes related to climate change, the stratospheric ozone layer, and global chemistry.
A CU-Boulder team is part of a massive field campaign studying tropical storms' impact on global warming and stratospheric ozone depletion. The team will use three NASA aircraft, seven satellites, and other instruments to collect data on chemical compounds, high-altitude clouds, and their influence on the Earth's radiation budget.
Researchers found that mice exposed to ozone before infection died more often than those breathed filtered air. Female mice were also less likely to survive pneumonia exposure compared to males, regardless of genetic variation. The study suggests considering the impact of environmental pollutants on health by gender.
Dutch researchers have developed a DNA layer that improves attachment, recovery, and immune response to body implants. The coating, patented by Jeroen van den Beucken, approximates the body's natural material, reducing inflammation and immune responses.