Articles tagged with Oxygen
Researchers have discovered how modern fish, such as pike and cod, developed a way to float at different water levels by inflating their swimbladders with gas. This is made possible by a complex system of arteries, veins, and special blood proteins that drive oxygen into the swimbladder.
Cassini mission data reveals the formation of molecular oxygen atmospheres in Saturn's rings without life present. This finding suggests that oxygen can be produced through non-biological means, complicating the search for life beyond Earth.
The end-Permian extinction was caused by a combination of factors, including volcanic carbon dioxide emissions, which warmed surface ocean water. This reduced the amount of oxygen available in the deep oceans, leading to an increase in hydrogen sulfide production and ultimately, mass extinctions.
Researchers at Emory University have successfully created a unique metallic molecule, breaking the record for stable metal-oxo species. The breakthrough enables new insights into improving existing technology, particularly in automobile catalytic converters and fuel cells.
Researchers found that oxygen in the atmosphere appeared at least 100 million years before its supposed debut with the carbon cycle perturbation. The discovery suggests a complex process involving mantle plume volcanoes and cyanobacteria, leading to an increase in oxygen levels over millions of years.
Researchers suggest oxygen may have appeared 100 million years before its previously believed debut, based on improved dating and proxy measures. The shift from a reducing to an oxidizing atmosphere is linked to volcanic activity and the production of water vapor and carbon dioxide.
Virginia Tech researchers have developed light-activated therapy agents that are oxygen independent, overcoming a limitation in photodynamic therapy. The new agents are activated by visible light and have been studied in cell cultures, showing promising results.
Scientists have discovered that early oceans were devoid of oxygen for billions of years, with a team developing a method to detect signs of ancient oxygen in rocks. The study sheds light on the history of our planet's oceans and could have significant implications for understanding evolution and the origins of life.
Roald Hoffmann highlights the overlooked scientific achievements of his wife, Marie-Anne Pierrette Paulze Lavoisier, and her husband Antoine Lavoisier. The collection at Cornell University provides insight into their lives and work.
Researchers at Carnegie Mellon University have discovered a new Fe-TAML activator that works with oxygen to oxidize organic and inorganic chemicals. This discovery has the potential to extend the use of Fe-TAML activators for environmental remediation and modify industrial processes to make them more efficient.
Scientists at Rice University and the European Synchrotron Radiation Facility used X-ray crystallography to capture the rapid structural changes of a protein. The research aimed to improve protein engineering for blood substitutes and genetic diseases, yielding valuable insights into protein dynamics.
Scientists have found evidence of hot gases on the perimeter of the Coalsack, a cold dust cloud nearby the Milky Way. This discovery may help resolve debates about oxygen VI generation and provide new insights into star formation and galaxy energy production.
Virginia Tech researchers discovered that tert-butoxyl radicals are more reactive than initially thought, making them a poor model for studying oxygen-free radicals in biological systems. This finding challenges previous assumptions about the behavior of these radical species.
Methane-based greenhouse and anti-greenhouse events contributed to the Archean climate's stability. The presence of methanogenic bacteria played a crucial role in these processes.
Scientists discover nitric oxide's active regulatory role in responding to tissue oxygen needs, enabling red blood cells to regulate blood flow. The findings explain why certain treatments fail or lead to adverse effects, offering new avenues for treating disorders such as sickle cell disease and pulmonary hypertension.
A Minneapolis chemist has won a national award for his work on separating molecules using membranes, which can improve efficiency in distillation processes. His unique approach has also been applied to separate oxygen from water, as demonstrated by an experiment with a dog named Muggins.
Researchers investigated gas exchange between infants and their environment while sleeping facedown on soft bedding. They found that hypoxemia, not hypercarbia, is the more important factor contributing to SIDS deaths, suggesting a new approach to prevention.
A team of researchers at Sealed Air Corporation has developed a new packaging film called OS1000 that can remove trace amounts of oxygen from the interior of hermetically sealed packages. This innovation improves the shelf life and quality of packaged food products, reducing oxidation and spoilage.
Researchers using NASA's Submillimeter Wave Astronomy Satellite (SWAS) have discovered that water vapor is 10,000 times less abundant than previously thought in interstellar clouds. The satellite's findings also indicate that molecular oxygen is at least 100 times less abundant than predicted, contradicting prevailing wisdom.
Researchers found that eating and drinking before flying increases cardiac output and improves oxygen levels in the brain and organs. This can reduce the risk of fainting spells and heart attacks by up to 21%.
Researchers analyzed Precambrian sedimentary rocks to track the evolution of oxygen and ozone in the early atmosphere. The study found a 'profound change' in chemical reactions involving sulfur, indicating limited free oxygen and a global signature.
Robert Criss has developed a new method to date water using oxygen-18 isotopes, providing a distinctive fingerprint for each water sample. This technique allows researchers to trace the age of water, track pollutant emissions, and understand the behavior of river systems.
Scientists confirmed the presence of oxygen VI in the galactic halo, indicating extremely high temperatures approaching half a million degrees Fahrenheit. The discovery provides strong evidence for supernovas pumping hot gas into the corona, supporting a long-held hypothesis about the galaxy's recycling process.
Researchers found that providing more oxygen during and after surgery can cut in half the number of patients experiencing nausea. This simple procedure is effective, risk-free, and inexpensive, offering a promising alternative to expensive anti-nausea medications.
Scientists have identified a biochemical link between ancient bacteria and modern mammalian hemoglobins, revealing that nematode worms use their strong hemoglobin to destroy oxygen. This unique function may also inspire the development of new cancer therapies by starving tumors of oxygen.
A common intestinal parasite has rewritten the understanding of hemoglobin's evolution and role in nature. The parasite reveals that hemoglobin evolved primarily to handle nitric oxide rather than oxygen.
A new neuroactive chemical, HF-7, isolated from spider venom may block overproduction of neurotransmitters causing brain damage after oxygen deprivation. Theoretical studies suggest HF-7 could stave off severe brain damage during short bouts of oxygen loss.
Researchers created a test-tube photosynthesis system that mimics the metal cluster in green plants, shedding light on how life-giving oxygen is produced. The study, led by University of Delaware chemist Arnold Rheingold, may suggest new strategies for converting sunlight into electricity and enhance our appreciation of the natural world.
Researchers discovered rare molecular interactions between skin molecules and UV-A light that can cause photoaging. The study found that UV-A wavelengths lead to weak molecular transitions, raising oxygen molecule energy levels to a damaging state.