Articles tagged with Oxygen
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
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Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
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Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
A large study found that home fingertip oxygen monitors give higher readings for patients with darker skin tones, which can lead to missed diagnoses and delayed medical attention. The researchers suggest interpreting SpO2 readings in context and developing guidance to address these limitations.
A recent study published in JAMA found that initiating resuscitation of preterm infants with fraction of inspired oxygen levels of 0.6 versus 0.3 did not affect the risk of death or brain injury by 36 weeks' corrected gestational age.
Researchers created a powerful catalyst from renewable lignin waste, boosting the efficiency and stability of oxygen evolution reaction in water electrolysis. The new catalyst achieves a low overpotential of 250 mV at 10 mA cm² and maintains strong performance for over 50 hours.
Researchers found that a pyrite-oxidizing microbe preserves up to 90% of atmospheric oxygen in sulfate, offering insights into microbial activity in ancient environments. This discovery could help analyze oxygen isotope data from Martian sediments for signs of life and provide clues to environmental conditions on early Earth.
A new power generation system using liquid oxygen storage has been patented by SwRI and 8 Rivers, aiming to make power plants more efficient and cost-effective. The system utilizes fluctuations in energy demand by generating pure oxygen during off-peak hours, which can then be stored and used later when prices are higher.
A new dual-imaging system simultaneously maps retinal structure and capillary oxygen levels in live mice, allowing researchers to study vision-threatening diseases like glaucoma and diabetic retinopathy. This non-invasive approach offers a powerful tool for elucidating local capillary values and tracking changes in retinal oxygenation.
Researchers at ISTA have discovered a way to tune singlet oxygen, a highly reactive ROS that causes cell damage and degrades batteries. By controlling the pH inside mitochondria, they can produce more 'good' triplet oxygen and reduce the production of 'bad' singlet oxygen.
Rice scientists developed a method to pattern device functions with submicron precision directly into an ultrathin crystal using focused electron beams. The approach created bright blue-light emitting traces that also conduct electricity, potentially enabling compact on-chip wiring and built-in light sources.
A new study using two-photon microscopy shows that brief interruptions in brain capillary flow can cause rapid drops in oxygen levels, potentially leading to tissue damage. The research found that even minor stalls can lead to significant hypoxia, highlighting the importance of uninterrupted blood flow to the brain.
A team of scientists at Pohang University of Science & Technology has developed a novel approach to enhance thermoelectric efficiency by controlling oxygen vacancies. By precisely controlling the number of oxygen vacancies in materials, they achieved a remarkable 91% improvement in thermoelectric performance.
The seminar, part of a DAAD-JSPS collaboration, will cover the latest topics on drug design and treatment protocols for photodynamic therapy. Researchers from Japan and Germany will present their recent research results on PDT, including nano-DDS applications.
Researchers have discovered a way to distinguish identical medicines at the molecular level, allowing for the tracing of counterfeit or stolen medicine. The technology focuses on variants of chemical elements such as isotopes of carbon, hydrogen, and oxygen.
Researchers have developed a method to exploit local microstrain as a precise tuning knob for single-atom catalysts, unlocking record-setting oxygen reduction performance and long-term stability. This breakthrough uses nanoscopic curvature to control bond strain, transforming static motifs into dynamically self-optimizing centers.
Researchers at Göttingen University developed a method to reconstruct the early Earth's atmosphere using fossilized micrometeorites. The study found that intact micrometeorites can preserve reliable traces of oxygen isotopes over millions of years.
Researchers warn that artificial oxygen input cannot replace comprehensive water protection strategies. Technical approaches have shown promise, but risks include intensifying greenhouse gases and disrupting marine habitats. Climate protection and reducing nutrient inputs remain crucial for mitigating ocean oxygen loss.
A new class of materials, clathrates, has been discovered as electrocatalysts for oxygen evolution reaction in green hydrogen production. The Ba₈Ni₆Ge₄₀ material transformed into ultrathin Nickel-sheets under an electric field, increasing catalytic activity and stability.
A new study reveals that human activities such as farming, wastewater, dams, and climate change are causing significant shifts in the global freshwater oxygen cycle. The research shows that inland waters are consuming more oxygen than they produce, making them a growing sink of atmospheric oxygen.
University of Queensland scientists used machine learning to predict when bacteria evolved oxygen use, finding some bacteria used it before photosynthesis. The study suggests aerobic metabolism occurred before oxygenic photosynthesis, dating back around 3.2 billion years.
Researchers created a timeline for bacterial evolution and oxygen adaptation using genomic data, fossils, and Earth's geochemical history. Their findings suggest that some bacteria could use trace oxygen long before evolving photosynthesis.
A recent study identified a quasi-conversion reaction on the cathode surface during discharging, leading to accelerated battery degradation. High nickel content exacerbates this effect.
A Chinese research team has developed an electrochemical process that can directly split CO2 into elemental carbon and oxygen. This innovative method uses lithium as a mediator to produce oxygen with a high yield of over 98.6%, significantly exceeding the efficiency of natural photosynthesis.
Astronomers have discovered oxygen in JADES-GS-z14-0, the most distant known galaxy, revealing a galaxy that is much more chemically mature than expected. The detection suggests galaxies formed rapidly and are maturing rapidly, contradicting previous theories about early universe formation.
Researchers have developed cost-effective and efficient water-splitting catalysts using cobalt and tungsten, which surprisingly increase in performance over time. The unique self-optimization process involves changes in the chemical nature of the catalyzing oxide, leading to improved activity and reduced overpotentials.
Researchers at Tohoku University found that incorporating gadolinium into iron-doped nickel oxide markedly enhances oxygen evolution reaction activity. Gd-doping reduces theoretical overpotentials and demonstrates favorable kinematics, leading to remarkable long-term stability and robust performance in water electrolysis.
New research suggests that volcanic activity billions of years ago accelerated oxygenation, leading to an increase in atmospheric oxygen. This pre-Great Oxygenation Event (GOE) may have provided the necessary conditions for photosynthetic microorganisms to thrive, ultimately paving the way for complex life.
Astronomers observed a bright and chemically complex galaxy, JADES-GS-z14-0, when the universe was just 2% of its current age. The discovery reveals significant amounts of oxygen, suggesting the galaxy had formed stars for potentially 100 million years before observation.
A POSTECH research team has developed a new catalyst using aluminum, improving the performance of hydrogen production in alkaline water electrolysis by approximately 50%. The aluminum catalyst maintained high current density and excellent stability, making it suitable for large-scale hydrogen production.
Researchers at SwRI and U-M have created a new methane flare burner using additive manufacturing and machine learning that eliminates 98% of methane vented during oil production. The burner's design, with a complex nozzle base and impeller, allows for efficient combustion even in challenging crosswind conditions.
Researchers found that functionalizing graphene sheets via plasma treatment can lead to enhanced sensitivity for specific gases, such as ammonia. The study discovered different types of defects created on the graphene sheets depending on the gas used during plasma treatment.
Researchers at HZB and HU Berlin have discovered a high-spin manganese centre, crucial for molecular oxygen formation in natural photosynthesis. The discovery, made possible by BESSY II's unique experimental capabilities, sheds light on the complex process of photosynthesis.
Researchers at Gladstone Institutes developed a drug called HypoxyStat that mimics the effects of breathing low oxygen, extending lifespan by over three times in mice with Leigh Syndrome. The drug reversed brain damage, muscle weakness, and other symptoms of the disease, even when given late in life.
Researchers at Max Planck Institute for Sustainable Materials have developed a novel method to create lightweight, nanostructured porous martensitic alloys by harnessing dealloying and alloying processes. The approach enables CO2-free and energy-saving production of high-strength materials.
Researchers have identified clinoptilolite and biochar as cost-effective options for removing siloxane compounds from landfill gas. These natural materials can enhance the performance of adsorbents with modification techniques, offering an environmentally friendly solution to mitigate damage to energy equipment.
A team of scientists found that carbon and other star-formed atoms don't just drift through space, but are pushed out by giant currents into intergalactic space. These atoms can eventually be pulled back in to form new stars, planets, and moons.
A POSTECH research team developed a groundbreaking strategy to enhance LLO material durability, extending battery lifespan by up to 84.3% after 700 cycles. The breakthrough addresses capacity fading and voltage decay issues.
Researchers have discovered a mismatched composition of gases in the planet's atmosphere compared to gases within the disk. The study found that the ratio of carbon and oxygen gases in the planet is much lower than expected, suggesting that current models of planet formation may be too simplified.
Researchers at Nagoya University developed a novel porous metal-organic framework (MOF) that combines adsorption and dissolution to separate oxygen from argon. The 'adsorptive-dissolution' mechanism enhances gas separation efficiency and selectivity, with potential applications in industries requiring high-purity oxygen.
A recent study from the University of Missouri found that peripheral chemoreceptors are overactive in adults with type 2 diabetes, leading to increased cardiovascular risk. While high doses of oxygen reduced chemoreceptor activity, it did not improve glucose tolerance or insulin sensitivity.
Researchers at Institute of Science Tokyo have identified key factors driving photochemical water oxidation. By fine-tuning reaction potential and pH conditions, they enhance the efficiency of this process, paving the way for more sustainable energy solutions.
A new study comparing early restrictive vs liberal oxygen for trauma patients found no significant reduction in death and/or major respiratory complications within 30 days. The study suggests that the choice of oxygen strategy may not be as critical in trauma care.
High-flow nasal oxygen was found to be more effective than noninvasive ventilation in preventing endotracheal intubation or death within 7 days in four of five patient groups with acute respiratory failure. However, the results were sensitive to analysis models and may require further study in specific patient populations.
Researchers at HZB developed a new P2X catalyst requiring less iridium than commercial materials, showing remarkable stability and different mechanisms for oxygen evolution. The study provides valuable information about catalyst performance and stability.
Researchers from Institute of Science Tokyo successfully developed a multi-element perovskite catalyst that selectively oxidizes light alkanes to alcohols with high yield and selectivity. The breakthrough catalyst operates under mild conditions and exhibits excellent stability and reusability.
Researchers developed a nano-patterned copper oxide sensor to detect hydrogen at low concentrations, outperforming previous CuO-based sensors. The sensor detects hydrogen concentrations as low as 5 parts per billion and responds quickly, making it suitable for leak detection and ensuring safe adoption of hydrogen technologies.
A group of student researchers developed a machine learning-based approach to better understand and represent the decline in global ocean oxygen levels. Their research showed that the world's oceans have lost oxygen at a rate of about 0.7% per decade from 1970 to 2010.
A new type of cationic epoxy photoresist exhibits greater sensitivity to two-photon laser exposure, enabling fast writing speeds and fine features. The material was developed by a research team led by Professor Cuifang Kuang, who achieved lithography speeds of 100 mm/s and resolution of 170 nm.
A new integrated method simplifies luminescence lifetime measurements, allowing researchers to determine lifetimes using standard camera systems. This breakthrough technique transforms fields that rely on optical sensing and chemical imaging.
Climate change is releasing more contaminants into the ocean, affecting marine ecosystems. Human activities and natural sources are mobilizing and increasing contaminant flows due to rising sea levels and melting glaciers.
For the first time, researchers have witnessed nanosized water bubbles forming in real time using a novel method that enables atomic precision. The breakthrough discovery has significant implications for practical applications, such as rapid water generation in deep space environments without extreme conditions.
Researchers at Tohoku University developed a new electrocatalyst by doping cobalt oxide with erbium, achieving high oxygen evolution performance and stability in acidic conditions. The Er-doped Co3O4 catalyst surpassed the performance of many precious metal-free catalysts.
A large multicentre study found no differences in quality of life, symptoms, or mortality between patients receiving 24-hour and 15-hour oxygen therapy at home. This is significant for patients with chronic obstructive pulmonary disease undergoing long-term oxygen therapy.
Researchers developed cost-effective catalysts by incorporating chromium into transition metal hydroxides, demonstrating enhanced catalytic activity. The FeCoNiCr hydroxide catalyst showed a low overpotential of 224 mV in alkaline media, outperforming similar catalysts.
Researchers at Tohoku University developed a novel approach to enhance the efficiency of the oxygen evolution reaction by introducing rare earth single atoms into manganese oxide. This leads to unprecedented improvements in OER performance, making it a suitable alternative to traditional catalysts like ruthenium dioxide.
Researchers design Na0.6[Ni0.3Ru0.3Mn0.4]O2 and vacancy-introduced Na0.7[Ni0.2V0.1Ru0.3Mn0.4]O2 compounds to enhance sodium-ion battery performance. The V-NRM compound exhibits improved capacity and rate performance, with an additional short voltage plateau at 3.9V during charging.
A new study reveals that metallic minerals on the deep-ocean floor can produce oxygen, even in complete darkness. This discovery challenges long-held assumptions that only photosynthetic organisms generate Earth's oxygen and has significant implications for our understanding of the origin of life.
Anaerobic bacteria have survived for ages in oxygen-free niches, influencing human health and environment. The 'AnoxyGen' project aims to unlock their biosynthetic potential using molecular and synthetic biology tools.
Scientists at Yokohama National University developed innovative catalysts using noble metals Rhodium and Ruthenium to facilitate cross-dehydrogenative coupling reactions. These reactions utilize oxygen as the sole oxidant, producing aryl esters with minimal waste.
Researchers found a link between ancient ocean oxygen depletion and the massive extinction of marine species during the Jurassic Period. The study provides insights into how human-made carbon emissions may lead to similar extinctions in the future.
Scientists at Okinawa Institute of Science and Technology identify a positive glutamate-NO-glutamate feedback loop that blocks long-term potentiation and impairs learning and memory. The study suggests that this loop may explain memory loss in stroke patients and potentially offer a solution for treatment.
Researchers used pyrite to study the relationship between sediment mixing and oxygen levels in ancient oceans. They found that small amounts of sediment mixing can expose buried minerals to enough oxygen to start oxygen buildup. This challenges conventional wisdom about the role of oxygen in oxygen accumulation.