Articles tagged with Atmospheric Pressure
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A Yale-led team discovered that molten iron alloys containing silicon and oxygen form two distinct liquids under conditions similar to those in the Earth's core, mimicking the separation of oil and vinegar in salad dressing. This finding provides new insights into the evolution of Earth's magnetic field.
Researchers at the University of Washington developed a method to synthesize nanodiamonds with intentional doping, enabling useful traits for medical research, computation, and beyond. The team used high-pressure and temperature to dope nanodiamonds with silicon, argon, and other elements.
A University of Rhode Island scientist has determined the temperature at the boundary of the Moon's core and mantle, finding it to be between 1,130 and 1,470 degrees Celsius. This discovery will help create a temperature profile through the Moon, allowing researchers to better understand its internal structure, composition, and evolution.
Tropical Cyclone Joaninha maintains its eye due to low wind shear and warm sea surface temperatures. The cyclone is expected to weaken as it moves into an unfavorable area with increasing westerly vertical wind shear.
Scientists from HZDR drove shock waves through plastics to simulate planetary conditions and observed crystalline structures at extreme pressures. The discovery may require revised models of Uranus and Neptune's interiors, suggesting less free hydrogen than previously thought.
NASA's Aqua satellite provides visible image of Tropical Cyclone Gelena transitioning into a subtropical storm, characterized by asymmetric wind patterns and cloud top warming. The storm is expected to continue moving through the Southern Indian Ocean over the next day until it dissipates.
Researchers at Columbia University have developed a new method to fine-tune adjacent layers of graphene using pressure to induce superconductivity. The discovery provides critical confirmation of previous findings and offers an alternative paradigm for manipulating electronic properties in graphene, potentially leading to the developme...
Scientists have discovered a new strategy to enhance the conductivity of lithium titanium oxide (LTO) anode materials for Li-ion batteries. By applying high pressure, LTO can transform into an amorphous phase that displays better conductivity. The findings provide insight into the relationship between structure and conducting properties.
Researchers create crystallized version of nitrogen by subjecting it to extreme pressures and temperatures, revealing a complex structure made up of dozens of molecules. The study resolves speculation on the structure of ι-N2, known as nitrogen's elusive form discovered 15 years ago.
Researchers at KAUST have discovered that gas flames are more unstable at high pressures, which can lead to increased noise and pollution emissions. The study found that pressure fluctuations can cause thermoacoustic instability in gas turbines, potentially leading to damage or explosion.
Researchers confirm nitrogen becomes a metallic fluid when subjected to high pressures and temperatures, with implications for the Earth's deep nitrogen cycle. The findings could inform the creation of energetic nitrogen polymers and superconducting states.
The Last Artifact documentary follows scientists as they seek to establish a new definition for the kilogram, with implications for modern life. The film showcases the history of the current standard and the challenges of updating it.
Scientists used lab-cooked recipes to model mantle minerals, providing clear measurements of density, compressibility and electronic conductivity. This study will help scientists interpret seismic waves and accurately map the amount of iron in the mantle.
A Rutgers University study found that most large storm surges in the Northeast are caused by non-hurricane extratropical cyclones. These storms include nor'easters and other low-pressure systems that generate tighter pressure gradients and longer-lasting onshore winds.
A recent study from MIT found that pressurization doesn't exacerbate membrane fouling in reverse osmosis (RO) systems. Researchers devised a method to isolate pressure's effects and discovered no impact on fouling rates or cleaning outcomes.
Researchers at RUDN University have developed a new method for creating drug molecules using carbon monoxide as a reducing agent. This innovation offers an energy-efficient solution to producing valuable chemicals, potentially reducing waste and costs. The study's findings suggest that this technology could be used in the synthesis of ...
Computer simulations reveal that turbulence in plasma jets emerges from heat-induced sound waves, offering a new understanding of plasma's therapeutic properties. This insight may lead to more consistent and effective medical therapies, including wound healing and cancer treatment.
Researchers explored non-thermal atmospheric pressure plasma treatment to improve natural dyeing of leather, reducing environmental impacts. The study successfully demonstrated the activation of functional groups on goat hide surfaces, leading to significant improvements in coloration with commercially available natural dyes.
Researchers successfully improved an ambient-pressure photoelectron spectroscopy instrument using hard X-rays to measure samples under real atmospheric pressure for the first time. This achievement broadens the range of applications for photoelectron spectroscopy, enabling direct examination of reactions between solids and gases.
A new study outlines a four-step framework for testing whether global warming contributed to record-setting weather events. The research found that human-caused climate change increased the odds of hottest events across over 80% of the globe, while also posing risks for vulnerable communities and ecosystems.
Researchers discovered a new discharge phenomenon, apokamp, occurring off the plasma arc in air at normal atmospheric pressure. The apokamp consists of ionisation waves - plasma bullets - moving with high velocity and may help explain blue jet phenomenon identified in 1994.
Researchers predicted unusual nitrides of hafnium and chromium with high-energy groups, potentially usable as powerful explosives at relatively low pressures. They also discovered a range of new compounds with unique properties, including high hardness and electrical conductivity.
Researchers predict two stable helium compounds, Na2He and Na2HeO, with unique properties. The discovery sheds light on extreme conditions inside gas giant planets and stars, where helium is a major component.
Scientists discover a new phenomenon of metastability in liquids, creating a metastable liquid directly by decompression below the melting point. The results could be important for developing new materials and understanding planetary interiors.
Tropical Depression 01W formed near Mindanao on January 8, 2017, and quickly weakened due to wind shear. The depression moved west through Mindanao towards the South China Sea, bringing moderate to heavy rains and rough seas to the region.
JILA physicists identified a long-missing piece of the puzzle of fossil fuel combustion contributing to air pollution and a warming climate. They observed a key molecule that appears briefly during a common chemical reaction in the atmosphere, revealing the reaction mechanism and quantified product yields.
Researchers have successfully created the first-ever iron-bismuth bond under extreme pressures equivalent to those within Mars' core. The new compound, FeBi2, shows promise in being superconductive and magnetic.
Researchers at the Polish Academy of Sciences have discovered a material that expands when subjected to hydrostatic pressure, defying intuition. The sodium amidoborane crystal's unique properties are attributed to the formation of new hydrogen bonds between adjacent molecules, leading to an abrupt increase in linear dimensions.
Researchers found carbonic acid, orthocarbonic acid, and clathrate compounds stable under high pressure conditions. The cores of Uranus and Neptune may consist of these exotic materials.
Atmospheric pressures of hundreds can be endured by a nanometer-thin layer of water exhibiting ice-like properties. This discovery could lead to improved designs in biomedical implants and antimicrobial coatings.
System 99L is a tropical low pressure area located over Hispaniola, producing disorganized shower and thunderstorm activity. Heavy rainfall, flash floods, and mudslides are likely over the region, with conditions becoming more favorable for development early next week.
Researchers discovered that the shape and dimensions of graphene nano-bubbles provide information on its elastic strength and interaction with substrates. The balloons can be created intentionally to make tiny pressure machines capable of withstanding enormous pressures.
Tropical Depression Fiona has weakened into a post-tropical depression, with maximum sustained winds decreased to near 30 mph. The low pressure area is expected to move northwestward and then westward, gradually weakening over the next couple of days.
Researchers studied magnesium chloride's high-pressure structural behavior and found it remained stable beyond 40 GPa, contradicting established structural systematics. The findings could improve confidence in predicting products and performance of detonated chemical formulations.
Researchers at Argonne National Laboratory have devised a method to achieve static pressures vastly higher than any previously reached, using transparent nano-crystalline diamonds. This breakthrough enables the study of materials under extreme conditions, potentially leading to the discovery of new materials with unique properties.
A satellite image captured by GOES-West showed an open circulation with clouds to the northeast of the remnant low center. The surface low, ex-Tropical Cyclone Celia, was centered about 300 miles northeast of Honolulu on July 18 and moving west at 10 mph.
Researchers discovered that Mercury's surface was formed by melting at high pressures near the core-mantle boundary. The study suggests that the unique sulfur content and pressure-temperature conditions explain the heterogeneous surface composition.
A team of researchers found that rapidly proliferating yeast cells can exert forces of up to 150 psi, equivalent to nearly five times atmospheric pressure. This jamming phenomenon may contribute to microbial pathogenesis and biofouling, with potential consequences for environmental systems.
Researchers found that the early Earth's atmosphere weighed at most half of today's, reversing a long-held idea about atmospheric pressure and climate patterns. The discovery also sheds light on the composition of ancient gases and their impact on early life.
A recent study found an increase in atmospheric high pressure systems over Greenland since the 1980s, leading to extreme weather patterns and warmer air. This is caused by strong Arctic warming and changes in the atmospheric jet stream.
Researchers found that atmospheric circulation patterns, including the Ridiculously Resilient Ridge, are more frequent in recent decades, increasing the risk of drought. The study also showed that temperature plays a significant role in drought development.
Recent decades have seen increased frequency of large-scale atmospheric circulation patterns associated with California's precipitation and temperature extremes. The researchers found that the 'Ridiculously Resilient Ridge' pattern, which diverts winter storms northward, has become more common, leading to increased dry conditions.
The Suomi NPP satellite spotted the remnants of ex-Tropical Cyclone Emeraude in the Southern Indian Ocean, with a large area of remnant clouds visible. The system's maximum sustained surface winds were estimated at 20-25 knots, and its minimum sea level pressure was near 1005 millibars.
Theoretical chemists from the Institute of Physical Chemistry of the Polish Academy of Sciences have found how to synthesize krypton oxide, a compound that can form an extensive and stable crystal lattice. This exotic substance can be produced at pressures exceeding 3 million atmospheres, similar to those on Krypton.
Researchers deployed a hydrophone to record ambient noise from the ocean floor at 36,000 feet in the Challenger Deep. The recordings revealed a diverse range of natural and human-made sounds, including earthquakes, whale calls, and ship traffic.
Researchers used high-pressure experiments to create two new iron oxides, which decompose at extreme conditions and release significant amounts of oxygen-rich fluid. The discovery suggests a huge oxygen source in the Earth's lower mantle that can affect geochemical processes.
New University of Washington research shows that the lunar forces affect the amount of rain on Earth, though very slightly, with a change of about 1 percent of total rainfall variation. The effect is due to the moon's gravitational tug causing higher air pressure and increasing temperature, making it less favorable for precipitation.
Researchers at the University of Edinburgh successfully recreated an elusive form of hydrogen, which exists only under extremely high pressures. The study found that at pressures equivalent to 3.25 million times that of Earth's atmosphere, hydrogen entered a new solid phase and showed unusual properties.
Researchers have created a new material that can store methane more efficiently, enabling the development of natural gas-powered cars with greater driving range and reduced hassle. The flexible MOF expands when methane is pumped in and contracts when it's extracted, making it suitable for use in home compressors.
Hurricane Olaf remains a major hurricane with sustained winds near 115 mph, moving northward towards the Hawaiian Islands. Swells generated by the storm will produce life-threatening surf along east-facing shores.
A new study reveals that solar activity affects the development of large-scale pressure systems in the Northern Hemisphere, influencing long-term climate predictions. The researchers found a time lag between solar irradiance and atmospheric pressure patterns, which can be used to improve predictability of decadal climate variability.
Scientists successfully induced colossal magnetoresistance in pure lanthanum manganite for the first time using high-pressure conditions. The phenomenon occurs when the competition between two phases is at its maximum, driving the transition from an insulator to a metal. This breakthrough has significant implications for harnessing col...
A team of Italian researchers has demonstrated the feasibility of a novel biogas upgrading process using physical absorption column technology at low pressure and temperature. The process involves two absorption columns, one at atmospheric pressure for CO2 removal and the second, with reduced dimensionality, for biomethane purification.
A team of researchers has discovered that the presence of salty impurities in ice can push the formation of electrically conducting ice to occur at higher pressures, potentially explaining the magnetic fields of Uranus and Neptune. This finding challenges current assumptions about the physics of icy planetary bodies.
Researchers at National Institute of Fusion Science have developed a dispersion interferometer to measure electron density in atmospheric pressure low-temperature plasma with high accuracy. This breakthrough enables precise control over plasma parameters, leading to optimal plasmas for medicine and biology applications.
By using a superconducting island to mediate interaction, researchers increased radiation pressure coupling by a millionfold, enabling observation of quantum phenomena in larger structures. This breakthrough paves the way for studying mechanical oscillations at the level of a single photon.
Scientists Russell Hemley and Ivan Naumov found that certain metals transition from being metallic to insulating under pressure, and vice versa. They identified the physics framework underlying these transformations, which involves specific electron configurations and asymmetry.
Hydrogen transforms into a layered sheet structure resembling graphene at high pressures, exhibiting unique aromaticity and conductivity. This discovery validates earlier predictions made by chemists three decades ago, expanding our understanding of chemical bonding in extreme conditions.
Tropical Storm Hagupit rapidly developed from a low-pressure area due to warm waters and favorable atmospheric conditions. The storm strengthened into a tropical storm on Dec. 1, with strong thunderstorms and fragmented bands spiraling into its center.
Researchers at Carnegie Institution use high pressure to engineer gallium arsenide, a promising semiconductor material for solar cells. The study found that applying pressure can widen the 'band gap' and induce metallic electronic properties in two different crystalline structures of GaAs.