Atmosphere
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Betula
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Micrococcus
Tropical Climate
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Spectrum Analysis
Wetlands
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Mitosporic Fungi
Arctic Regions
Inhalation Exposure
Iron Compounds
Fungi
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Ions
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Denitrification
Sulfur Compounds
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Colony Count, Microbial
Chlorofluorocarbons
Ribulose-Bisphosphate Carboxylase
Rumex
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Nitrogen Fixation
Environmental Pollution
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Rubber
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Decompression
Spores
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Partial Pressure
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Models, Chemical
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Mass Spectrometry
Phytoplankton
Chemical Hazard Release
Isotopes
Agriculture
Metmyoglobin
Passive exchanges during water vapour absorption in mealworms (Tenebrio molitor): a new approach to studying the phenomenon. (1/768)
The weights of single mealworms were continuously recorded at 20 degrees C during exposure to periods of constant humidity and to abrupt changes in atmospheric vapour pressure. Two exchange stages were recognized in each animal. Weight changes were either limited to slow losses, suggesting transpiration through the external cuticle, or showed more rapid humidity-dependent gains as well as losses. Rapid exchanges indicated that water was gained or lost through permeable barriers, from a fluid compartmet of significantly lower vapour pressure than the haemolymph, equivalent to about 90% R.H. Weight gains and losses during humidity changes provided evidence of a significant, passively exchanging fluid compartment located between the exchange surface and absorbing mechanism. Weight changes in faecal pellets following their elimination provide further support for a rectal site of atmospheric absorption. (+info)Volatile anaesthetics and the atmosphere: atmospheric lifetimes and atmospheric effects of halothane, enflurane, isoflurane, desflurane and sevoflurane. (2/768)
The atmospheric lifetimes of the halogenated anaesthetics halothane, enflurane, isoflurane, desflurane and sevoflurane with respect to reaction with the hydroxyl radical (OH.) and UV photolysis have been determined from observations of OH. reaction kinetics and UV absorption spectra. Rate coefficients for the reaction with OH radicals for all halogenated anaesthetics investigated ranged from 0.44 to 2.7 x 10(-14) cm3 molec-1 s-1. Halothane, enflurane and isoflurane showed distinct UV absorption in the range 200-350 nm. In contrast, no absorption in this wavelength range was detected for desflurane or sevoflurane. The total atmospheric lifetimes, as derived from both OH. reactivity and photolysis, were 4.0-21.4 yr. It has been calculated that up to 20% of anaesthetics enter the stratosphere. As a result of chlorine and bromine content, the ozone depletion potential (ODP) relative to chlorofluorocarbon CFC-11 varies between 0 and 1.56, leading to a contribution to the total ozone depletion in the stratosphere of approximately 1% for halothane and 0.02% for enflurane and isoflurane. Estimates of the greenhouse warming potential (GWP) relative to CFC-12 yield values of 0.02-0.14, resulting in a relative contribution to global warming of all volatile anaesthetics of approximately 0.03%. The stratospheric impact of halothane, isoflurane and enflurane and their influence on ozone depletion is of increasing importance because of decreasing chlorofluorocarbons globally. However, the influence of volatile anaesthetics on greenhouse warming is small. (+info)Effects of in vitro atmospheric ammonia exposure on recovery rate and luminol-dependent chemiluminescence of bovine neutrophils and bronchoalveolar macrophages. (3/768)
The effects of atmospheric ammonia, a major pollutant in animal confinement facilities, on bovine neutrophils and bronchoalveolar macrophages were evaluated in vitro. Ammonia exposure at concentrations 50, 100 and 200 ppm for one hour impaired recovery rates of neutrophils dose-dependently but enhanced their chemiluminescence activity per cell at lower concentrations (50 and 100 ppm). Macrophages were resistant to the exposure. Their recovery rates and chemiluminescence remained unaffected even at 200 ppm exposure. The present results suggest that ammonia exposure is unfavorable for bovine neutrophils in vitro, and probably in vivo also, in light of causing cell damage and triggering wider inflammatory responses. (+info)Galileo imaging of atmospheric emissions from Io. (4/768)
The Galileo spacecraft has detected diffuse optical emissions from Io in high-resolution images acquired while the satellite was eclipsed by Jupiter. Three distinct components make up Io's visible emissions. Bright blue glows of more than 300 kilorayleighs emanate from volcanic plumes, probably due to electron impact on molecular sulfur dioxide. Weaker red emissions, possibly due to atomic oxygen, are seen along the limbs, brighter on the pole closest to the plasma torus. A faint green glow appears concentrated on the night side of Io, possibly produced by atomic sodium. Io's disk-averaged emission diminishes with time after entering eclipse, whereas the localized blue glows brighten instead. (+info)Archean molecular fossils and the early rise of eukaryotes. (5/768)
Molecular fossils of biological lipids are preserved in 2700-million-year-old shales from the Pilbara Craton, Australia. Sequential extraction of adjacent samples shows that these hydrocarbon biomarkers are indigenous and syngenetic to the Archean shales, greatly extending the known geological range of such molecules. The presence of abundant 2alpha-methylhopanes, which are characteristic of cyanobacteria, indicates that oxygenic photosynthesis evolved well before the atmosphere became oxidizing. The presence of steranes, particularly cholestane and its 28- to 30-carbon analogs, provides persuasive evidence for the existence of eukaryotes 500 million to 1 billion years before the extant fossil record indicates that the lineage arose. (+info)Increased summertime UV radiation in New Zealand in response to ozone loss. (6/768)
Long-term decreases in summertime ozone over Lauder, New Zealand (45 degrees S), are shown to have led to substantial increases in peak ultraviolet (UV) radiation intensities. In the summer of 1998-99, the peak sunburning UV radiation was about 12 percent more than in the first years of the decade. Larger increases were seen for DNA-damaging UV radiation and plant-damaging UV radiation, whereas UV-A (315 to 400 nanometers) radiation, which is insensitive to ozone, showed no increase, in agreement with model calculations. These results provide strong evidence of human-induced increases in UV radiation, in a region where baseline levels of UV radiation were already relatively high. (+info)Climate change as a regulator of tectonics on Venus. (7/768)
Tectonics, volcanism, and climate on Venus may be strongly coupled. Large excursions in surface temperature predicted to follow a global or near-global volcanic event diffuse into the interior and introduce thermal stresses of a magnitude sufficient to influence widespread tectonic deformation. This sequence of events accounts for the timing and many of the characteristics of deformation in the ridged plains of Venus, the most widely preserved volcanic terrain on the planet. (+info)The gravity field of Mars: results from Mars Global Surveyor. (8/768)
Observations of the gravity field of Mars reveal a planet that has responded differently in its northern and southern hemispheres to major impacts and volcanic processes. The rough, elevated southern hemisphere has a relatively featureless gravitational signature indicating a state of near-isostatic compensation, whereas the smooth, low northern plains display a wider range of gravitational anomalies that indicates a thinner but stronger surface layer than in the south. The northern hemisphere shows evidence for buried impact basins, although none large enough to explain the hemispheric elevation difference. The gravitational potential signature of Tharsis is approximately axisymmetric and contains the Tharsis Montes but not the Olympus Mons or Alba Patera volcanoes. The gravity signature of Valles Marineris extends into Chryse and provides an estimate of material removed by early fluvial activity. (+info)Hyperoxia can cause damage to the body's tissues and organs, particularly the lungs and brain. In severe cases, hyperoxia can lead to respiratory failure, seizures, and even death.
There are several ways to diagnose hyperoxia, including:
1. Blood tests: These can measure the levels of oxygen in the blood.
2. Arterial blood gas (ABG) analysis: This is a test that measures the amounts of oxygen and carbon dioxide in the blood.
3. Pulse oximetry: This is a non-invasive test that measures the amount of oxygen in the blood by shining a light through the skin.
Treatment for hyperoxia depends on the underlying cause, but may include:
1. Oxygen therapy: This involves administering oxygen to the patient through a mask or nasal tubes.
2. Medications: These may be used to treat any underlying conditions that are causing hyperoxia.
3. Mechanical ventilation: In severe cases, this may be necessary to support the patient's breathing.
In summary, hyperoxia is a condition where there is too much oxygen in the body, and it can cause damage to the body's tissues and organs. Diagnosis is typically made through blood tests or other tests, and treatment may involve oxygen therapy, medications, or mechanical ventilation.
The severity of decompression sickness can vary widely, ranging from mild discomfort to life-threatening complications. In severe cases, the condition can cause respiratory failure, cardiac arrest, and even death.
The risk of developing decompression sickness increases with the depth and duration of the dive, as well as the speed at which the diver surfaces. To minimize the risk of this condition, divers are advised to follow established diving procedures and protocols, including gradual ascent from depth and regular stops at specific depths to allow for decompression.
Treatment for decompression sickness typically involves hyperbaric oxygen therapy, which involves breathing pure oxygen in a pressurized chamber to help dissolved gases in the body to be absorbed and excreted more quickly. In severe cases, hospitalization may be necessary to monitor and treat complications such as respiratory or cardiac failure.
Prevention is key when it comes to decompression sickness, and divers are advised to take a number of precautions to minimize their risk, including:
1. Planning dives carefully to avoid excessive depth and duration.
2. Following established diving procedures and protocols.
3. Using proper equipment and maintaining it in good condition.
4. Making gradual ascents from depth and regular stops at specific depths to allow for decompression.
5. Avoiding alcohol and sedatives before and after diving.
6. Getting plenty of rest before and after diving.
7. Seeking medical attention if any symptoms of decompression sickness are experienced.
Atmosphere
High Atmosphere
Grey atmosphere
Stellar atmosphere
Dizzy Atmosphere
Subsidence (atmosphere)
Prebiotic atmosphere
Controlled atmosphere
Primary atmosphere
Upper atmosphere
Lower atmosphere
Extraterrestrial atmosphere
Middle atmosphere
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Cottrell atmosphere
Atmosphere (service)
Atmosphere (Kolkata)
Reducing atmosphere
Atmosphere (disambiguation)
One Atmosphere
Atmosphere discography
Secondary atmosphere
Atmosphere (journal)
Modified atmosphere
Atmosphere (music group)
Atmosphere of Mercury
Atmosphere of Uranus
Turbopause | atmosphere | Britannica
Atmosphere
beautiful atmosphere | TikTok
Pluto's atmosphere could disappear by 2030, study says | CNN
CDC - Mining - Use of Vacutainers for Collection of Mine Atmosphere Samples - NIOSH
The Primitive atmosphere
Global HazLoc and Explosive Atmosphere Markings | UL Solutions
Nitrogen Tetroxide Found in Jupiter's Atmosphere | Science News
Pluto's Atmosphere Found Poisonous and Surprisingly High | Space
On Atmosphere | Oberlin College and Conservatory
Creating an Atmosphere of Psychological Safety
atmosphere Archives - Young Living Blog
Atmosphere '23 | Aruba
Create the Online Atmosphere You Want with Ambiance Pro - StudioPress
Carbon dioxide levels in atmosphere surpass key milestone
USGS OFR 152-95: Pesticides in the Atmosphere
The Volokh Conspiracy - A New Scopes Trial Atmosphere?
Pluto's atmosphere, icecaps and other surprises
Skate-Ready Streetwear Designs : ATMOSPHERE URINE
Saturn's 'Wispy' Moon Has An Oxygen Atmosphere - Universe Today
Atmosphere | Poseidon
Digital Atmosphere - The Weather Forecasting Forum
Atmosphere's Summer Tour continues! - Rhymesayers Entertainment
Venus' Watery History Under Scanner: NASA To Send Rocket To Probe Planet's Atmosphere
Matt Fitzpatrick relishing hostile atmosphere awaiting Team Europe at Ryder Cup
Atmosphere of Venus yields evidence of volcanic activity on Earth's sister planet - CSMonitor.com
Arizona gyms have a new socially distant atmosphere - Arizona PBS
Earth's8
- In their research into the possible chemical environs and reactions necessary for such an event, many early evolutionary researchers (pre 1930) assumed that the earth's atmosphere had never been radically different than the present, i.e. contained free oxygen (O 2 ), nitrogen (N 2 ) and minor carbon dioxide (CO 2 ). (creation.com)
- Adding into their calculations the present known rate at which the hydrogen in the earth's atmosphere (from whatever source) escapes into space they concluded that to produce present known quantities of O 2 from H 2 O and to let the double volume of H 2 escape until it reached its present value of 1 x 10- 6 atm, would have taken many thousands of trillions of years. (creation.com)
- This age for earth's atmosphere was felt to be unrealistically high. (creation.com)
- This cold simple atmosphere that is strongly driven by the heat from the sun could give us important clues to how some of the basic physics works, and act as a contrasting test-bed to help us better understand the Earth's atmosphere. (space.com)
- The concentration of oxygen in Dione's atmosphere is roughly similar to what you would find in Earth's atmosphere at an altitude of about 300 miles," said Robert Tokar, researcher at Los Alamos National Laboratory and lead author of the paper published in Geophysical Research Letters. (universetoday.com)
- VeSpR will peek at Venus from above Earth's absorbing atmosphere, and MAVEN will journey to Mars to do a long-term study. (ibtimes.com)
- Scientists said measurements like these cannot be done using ground-based telescopes because Earth's atmosphere absorbs most UV light before it reaches the planet. (ibtimes.com)
- In this case, the sounding rocket will carry the telescope more than 65 miles above the Earth's surface, and at that altitude, the atmosphere thins out enough to allow UV readings. (ibtimes.com)
Pluto's10
- A British-based team of astronomers, led by Jane Greaves of the University of St. Andrews in Scotland, found a strong signal of carbon monoxide gas in Pluto's atmosphere using the 15-meter James Clerk Maxwell Telescope in Hawaii. (space.com)
- The atmosphere of Pluto was known to extend more than 60 miles (about 100 kilometers) above the surface, the researchers said, but the new findings raise that height to more than 1,860 miles (3,000 km) - equivalent to a quarter of the distance out to Pluto's largest moon, Charon. (space.com)
- Pluto's resulting atmosphere is probably the most fragile in our solar system, the researchers said, with the top layers blowing off into the cosmos. (space.com)
- The height to which we see the carbon monoxide agrees well with models of how the solar wind strips Pluto's atmosphere," said Christiane Helling, a member of the research team at the University of St. Andrews. (space.com)
- In Pluto's atmosphere, carbon monoxide acts as a coolant, while methane absorbs sunlight, which produces heating. (space.com)
- The newly discovered carbon monoxide could play a key role in slowing the loss of Pluto's atmosphere. (space.com)
- We're having to start from scratch, changing what we thought we knew about Pluto's atmosphere. (cosmosmagazine.com)
- Backlit by the Sun, Pluto's atmosphere forms a glowing halo in this image from NASA's New Horizons spacecraft. (cosmosmagazine.com)
- One is the method that was first used to detect Pluto's atmosphere. (cosmosmagazine.com)
- It relies on watching a star passing behind and observing how much of its light is dimmed by Pluto's atmosphere - this way, scientists can measure its density and mass. (cosmosmagazine.com)
Webinar1
- This webinar covers HazLoc and Explosive Atmospheres markings and certifications, including North American Listings, ATEX and IECEx Certifications. (ul.com)
Planet's5
- Poisonous carbon monoxide gas has been discovered in the atmosphere of the dwarf planet Pluto, after a worldwide search that lasted nearly two decades, according to a new study that also detected the planet's atmosphere extendingmuch higher above the surface than previously thought. (space.com)
- The processes on Pluto could also help scientists understand the mechanisms that govern the behavior of our own planet's atmosphere. (space.com)
- Now its snapshots have revealed the dwarf planet's fine hazy upper atmosphere - images that "brought tears to our eyes", says Michael Summers, a planetary scientist from George Mason University in Virginia and a co-investigator on the mission. (cosmosmagazine.com)
- A week after launching a probe to examine Mars' upper atmosphere, NASA is now set to send up a research rocket to inspect the atmosphere of Venus, and to determine if the planet's surface ever harbored water. (ibtimes.com)
- VeSpR will study the ultraviolet, or UV, light that is emitted by Venus' atmosphere for information about the history of the planet's water. (ibtimes.com)
Methane1
- Fluctuations in the atmosphere have been seen before, but only in the lower atmosphere, where methane - the only other gas to be positively identified - has also been seen to vary, the researchers said. (space.com)
Nitrogen1
- Maintaining a balance between the two gases, which are actually just trace elements in what is thought to be an atmosphere dominated by nitrogen , is critical during the long seasons on Pluto that last several decades. (space.com)
Upper atmosphere1
- According to NASA, VeSpR will take measurements specifically in the upper atmosphere to solve this uncertainty. (ibtimes.com)
Carbon4
- We think the atmosphere may have grown in size, or the carbon monoxide abundance may have been boosted. (space.com)
- The amount of heat-trapping carbon dioxide in the atmosphere has shot past a key milestone -- more than 50% higher than pre-industrial times -- and is at levels not seen since millions of years ago when Earth was a hothouse ocean-inundated planet , federal scientists announced Friday. (ktvu.com)
- Before the industrial revolution in the late 19th century carbon dioxide levels were at 280 parts per million, scientists said, so humans have significantly changed the atmosphere. (ktvu.com)
- Both changes were small compared to how much carbon dioxide is pumped into the atmosphere each year, especially considering that carbon dioxide stays in the atmosphere hundreds to a thousand years, Tans said. (ktvu.com)
Pluto4
- Pluto is the only dwarf planet known to have an atmosphere. (space.com)
- Astronomers have known that Pluto has an atmosphere since 1988, when they watched the dwarf planet as a star passed directly behind it. (cosmosmagazine.com)
- The second method involved NASA scientists beaming radio waves toward Pluto, timed so they'd pierce the atmosphere and be picked up by New Horizons passing behind. (cosmosmagazine.com)
- Scientists have long speculated that by the time Pluto reaches its furthest point in 2113 - nearly half again as distant from the Sun as its present position - its atmosphere will have frozen out completely. (cosmosmagazine.com)
Scientists2
- Data acquired during a flyby of the moon by the Cassini spacecraft in 2010 have been found by the Los Alamos researchers to confirm the presence of molecular oxygen high in Dione's extremely thin atmosphere - so thin, in fact, that scientists prefer the term exosphere . (universetoday.com)
- Scientists say it is still unclear whether water existed on the surface of Venus or only high up in its atmosphere, where temperatures are cooler. (ibtimes.com)
Venus3
- NASA is launching a sounding rocket to study ultraviolet light being emitted from the atmosphere of Venus, shown here in false color to highlight subtle contrasts in cloud markings. (ibtimes.com)
- Venus today has a thick atmosphere that contains very little water, but we think the planet started out with an ocean's worth of water," John T. Clarke of Boston University, and the mission's principal investigator, said in a statement. (ibtimes.com)
- Some previous estimates had indicated that Venus could have had enough ancient water to cover the whole globe with 23 feet of liquid, before it was found that the amounts of hydrogen and deuterium, a heavier version of hydrogen, can vary at different heights in Venus' atmosphere, changing the calculations. (ibtimes.com)
Molecules2
- It would be impossible to produce such molecules in the presence of an oxidizing atmosphere. (creation.com)
- The molecules in the atmosphere can "freeze out", settling on the surface like frost. (cosmosmagazine.com)
Search1
- Results of search for 'su:{Atmosphere. (who.int)
Creating2
Mars2
- NASA launched the Mars Atmosphere and Volatile Evolution, or MAVEN, mission from its Cape Canaveral Air Force Station in Florida on Nov. 18. (ibtimes.com)
- Mars atmosphere. (bvsalud.org)
Humans1
- In any closed environment containing humans, a safe breathing atmosphere is critical. (cdc.gov)
Suggest1
- This is the place to get help with Digital Atmosphere, suggest improvements, and get tips. (weathergraphics.com)
Felt2
- Sitting on Tappan Square with my friends during Orientation Week, marveling at how the slight breeze, bumblebees lazily floating by, and faint strains of music combined to create a feeling of contentment, I felt an atmosphere of peace. (oberlin.edu)
- When I arrived and felt the vibrant atmosphere at the office, my heart said "Yes - do it, too! (who.int)
Present5
- The only feasible alternative atmosphere envisaged to provide a 'protective' environment for organic reactions, was a reducing atmosphere-one which had little or no free oxidizing compounds present. (creation.com)
- The following table compares this atmosphere with the composition of the present oxidizing atmosphere. (creation.com)
- However, such an atmosphere would have far lower oxidizing potential than our present atmosphere. (creation.com)
- Urey's work is very dependent upon his concept that the present observable atmosphere on Jupiter represents what the original earth must have been like. (creation.com)
- Low levels of long-lived pesticides are present in the atmosphere throughout the year. (usgs.gov)
Water1
- The perfectly fitting Atmosphere is the fullface mask of choice for professional and cold water divers. (poseidon.com)
Study1
- This study investigated the relationship between family violence, family atmosphere and symptoms of mental disorders in the adolescence. (bvsalud.org)
Methods1
- Methods of reducing bacterial contamination of the atmosphere arising from use of an air-polisher. (bvsalud.org)
Collection1
- Supreme and Antihero work in collaboration on a collection designed for the Fall/Winter 2020 season entitled 'ATMOSPHERE URINE. (trendhunter.com)
Space1
- If the new measurement is correct, it doesn't necessarily mean the atmosphere has been lost to space. (cosmosmagazine.com)
Stay1
- A memorable website has a character that connects with readers and an atmosphere that makes them want to stay. (studiopress.com)
Years1
- In reality, choosing a college requires an in-depth personal reflection of what you want to get out of these four years, and this, admittedly, goes beyond the atmosphere of a school. (oberlin.edu)
Views1
- Urey in collaboration with Miller, 4 attempted to quantify his views about early atmosphere composition. (creation.com)
Cold1
- The perfectly fitting Atmosphere protects your face from the cold. (poseidon.com)
Amount1
- the total amount of free O 2 in today's atmosphere. (creation.com)
Place3
- I honestly believe that seemingly insignificant effects, like a place's atmosphere, can have tangible effects on how comfortable one feels in that place, so I was excited and nervous to figure out how I would perceive Oberlin's atmosphere. (oberlin.edu)
- The atmosphere was one of palpable excitement, and I left feeling like this could maybe be the right place for me. (oberlin.edu)
- But the atmosphere of a school is more than just academics-it is made up of those tiny, everyday interactions and observations that define one's relation to a place. (oberlin.edu)
Transport1
- This report summarizes a comprehensive analysis of existing information on national and regional patterns of pesticides in the atmosphere and major influences on their sources and transport. (usgs.gov)