Articles tagged with Oxygen
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.