Articles tagged with Ammonia
Researchers at the University of Illinois developed a sensor that detects ammonia in breath, a sign of kidney failure. The device is sensitive enough to detect low levels, making it suitable for portable, disposable use.
A new process produces hydrogen at room temperature without external heat, utilizing adsorption on a RuO2/Al2O3 catalyst to initiate reaction. This enables repeated production of H2 even without external heat supply, contributing to efficient carbon-free energy production.
Researchers have discovered a key protein involved in photorespiration, a process that wastes energy and fixed carbon in plants. The Bile Acid Sodium Symporter 6 (BASS6) protein could be manipulated to increase plant productivity by reducing losses from this process.
A global study found steadily increasing ammonia concentrations from 2002 to 2016 over four major agricultural regions. The increases are broadly tied to crop fertilizers, livestock animal wastes, changes to atmospheric chemistry, and warming soils.
Researchers found that non-toxic amounts of ammonia increase the production of heme oxygenase-1 (HO-1), which protects endothelial cells and prevents plaque buildup. Glutamine, an amino acid supplement, triggers this natural response.
Researchers have created a novel method to produce ammonia at room temperature, utilizing enzymes derived from nature, which also generates a small electrical current. This process could potentially lead to a less energy-intensive source of ammonia used worldwide as a vital fertilizer.
Researchers detected high concentrations of ammonia in the upper troposphere over the Asian monsoon, suggesting a significant role in aerosol formation and potential cooling effect on the atmosphere. The findings provide new insights into the vertical distribution of atmospheric ammonia.
Elena Long's research aims to study the structure of nuclei by exploring how six quarks give rise to a binding force. She plans to use a new target made of deuterated ammonia to apply strong magnetic fields and measure polarization, gaining insight into matter's underlying structure.
Researchers from Colorado State University found that seabird guano emissions influence Arctic cloud properties and climate cooling. The study revealed a link between ammonia-rich bird poop and the formation of atmospheric aerosol particles, which can reflect sunlight back to space.
Researchers at ORNL discovered using high pressures to initiate chemical reactions, opening a new pathway for synthesizing novel materials. This process may also help explain the formation of complex carbon structures observed in interstellar space.
A study on Nitrososphaera viennensis reveals that specific genes and adaptations enable terrestrial archaeal ammonia oxidizers to thrive. The research provides insights into the energy metabolism of Archaea and its implications for agricultural soils and potential medical applications.
The study calculates the production of aerosol particles in all Earth regions and at different heights, revealing key findings about particle formation and its role in climate. It also determines the influence of cosmic radiation and human activity on cloud condensation nuclei.
Researchers discovered that sharks absorb toxic ammonia through their gills and convert it into non-toxic urea. This process helps maintain the fish's moisture levels in salty seawater.
Researchers have developed a highly active and stable catalyst for ammonia synthesis under low reaction temperatures. The flat-shaped Ru nanoparticles anchored on Ca(NH2)2 exhibit high catalytic performance and long-term stability.
A new study suggests that implementing techniques such as floor scraping, flushing with water, and using different types of flooring can reduce ammonia emissions from commercial dairy cattle barns by up to 50%. This reduction in pollution could have positive impacts on both the environment and human health.
Bacterial nitrogenase produces ammonia by combining atmospheric nitrogen with protons and electrons, moving one electron at a time between symmetrical halves. The enzyme's two-stage engine works efficiently through complex communication between the two halves.
A team of researchers from Utah State University and other institutions found that the two symmetrical halves of nitrogenase work together to regulate electron movements. This cooperative effort allows for more efficient conversion of nitrogen into ammonia, a crucial process for food production and energy development.
A recent study analyzed data from 25 previous studies to identify factors influencing ammonia emissions in dairy barns. Researchers found that reducing crude protein in a dairy cow's diet can significantly lower nitrogen excretion, resulting in reduced ammonia emissions. The study provides key information for farmers and farm advisers ...
New observations reveal a widespread view of activity below Jupiter's clouds, including hot spots and dry regions devoid of clouds and condensable gases. The detected ammonia plumes swell up in wave patterns, suggesting motion deep within the atmosphere.
Astronomers have produced the most detailed radio map yet of Jupiter's atmosphere, revealing massive movement of ammonia gas that underlies colorful bands and whirling clouds. The study sheds light on global circulation and cloud formation driven by Jupiter's internal heat source.
New research from Colorado State University finds that agricultural ammonia emissions now surpass fossil fuel combustion emissions as the dominant source of nitrogen cycle disturbance. Excess nitrogen in the atmosphere causes environmental impacts such as soil acidification and decreased biodiversity.
Algae farming is sensitive to fertilizer costs, with ammonia and carbon dioxide being major concerns. Approaches like increasing surface area, partial pressure, and contact time can improve nutrient utilization efficiency for CO2. Dosing ammonia at a controlled rate can minimize its volatility and toxicity.
Scientists at NREL have developed a new process using light to reduce dinitrogen into ammonia, with rates of production similar to those of the ATP-dependent reaction. This method reduces energy requirements and emits no carbon dioxide, offering a more sustainable alternative to current industrial processes.
Researchers at Utah State University and other institutions have developed a light-driven process for nitrogen fixation, which could revolutionize agriculture and reduce the world's dependence on fossil fuels. The new process uses nanomaterials to capture light energy, making it more energy-efficient than traditional methods.
Scientists at NREL developed a new, light-driven chemical process to produce ammonia, the main ingredient of fertilizer. The research uses nanocrystals to harness light energy, which then energizes electrons to trigger nitrogen transformation.
Researchers found that despite declining sulfur emissions, the acidity of sulfate particles remains unchanged in the Southeast US. The neutralizing ammonia emitted from agriculture and other sources forms an equilibrium with sulfates, reducing its ability to neutralize their acidity.
A research team led by Hong Li at the University of Delaware has found that adding alum to poultry litter can significantly reduce ammonia and greenhouse gas concentrations. This innovation helps control nutrient emissions, conserves energy, and improves animal welfare, making agriculture more sustainable.
Researchers identify a new type of bacteria, Nitrospira, capable of converting ammonia to nitrate through comammox process, revealing a long-sought organism in the nitrogen cycle. This discovery opens up new avenues for understanding the environment and wastewater treatment.
Scientists at the University of Delaware have discovered a novel structure for bimetallic catalysts, which offer improved performance and ease of synthesis. The 'patched' surface exhibits dual active sites, enabling more efficient chemical reactions.
A team of scientists used X-ray spectroscopy to analyze the interactions between active metals and gas molecules in catalytic converters. They found that different materials exhibit unique reaction paths, which can help improve their efficiency and reduce pollutant emissions.
A study engineered a gut microbiome with low urease expression to alleviate hyperammonemia symptoms in mice. This approach reduced circulating ammonia levels and improved mortality rates in animals with liver disease.
Northwestern University scientists have developed a catalyst that can convert nitrogen to ammonia under natural conditions, mimicking the process found in nature.
Researchers at Penn State have developed a thermally regenerative ammonia-based battery that converts low-grade waste heat into electricity with high efficiency. The battery can produce up to 60 watts per square meter of power, making it six to 10 times more efficient than other liquid-based thermal-electric energy conversion systems.
Researchers found that migrating animals release ammonia, which plays a significant role in shaping marine chemistry, particularly in low-oxygen zones. The study reveals that animal behavior on a large scale influences the ocean's chemistry, with implications for predicting ocean changes under climate change.
Research clarifies that ammonia emissions from agricultural exports have a substantial impact on air quality, with the study estimating an annual health cost of $36 billion. The findings suggest that reducing ammonia emissions could lead to significant societal benefits, particularly in the Northeast and Great Lakes region.
Researchers from North Carolina State University have successfully grown vertically aligned carbon nanofibers using ambient air without toxic ammonia. This breakthrough enables the mass production of these nanofibers, which hold promise for various applications, including gene delivery tools, sensors, and batteries.
The study found that Glycerol phenylbutyrate significantly reduced hepatic encephalopathy events, hospitalizations, and ammonia levels compared to placebo. GPB's direct ammonia-lowering agent properties suggest its therapeutic potential for patients with cirrhosis and hepatic encephalopathy.
A study published in Nature Medicine suggests a potential new treatment for seizures caused by high levels of ammonia in the blood. Bumetanide, a diuretic drug used to treat high blood pressure, has been found to restore normal electrical activity in the brains of mice with genetic metabolic disorders and prevent seizures.
Researchers find that US national parks are experiencing 'accidental fertilization' at or above critical thresholds due to nitrogen compounds carried on the wind. The team predicts significant increases in agricultural land and fertilizer use by 2050, requiring a 55% reduction of anthropogenic NH3 emissions.
Researchers at the University of Wisconsin-Madison have developed a diamond catalyst that efficiently converts nitrogen to ammonia under ambient conditions. The new technique, which uses synthetic industrial diamond, reduces energy consumption by up to 2% compared to traditional methods.
Researchers at Indiana University found that titanium dioxide coatings, used in air-pollution-removal technology, convert abundant ammonia to nitrogen oxide, increasing harmful ozone pollution. The study's findings call into question the effectiveness of this technology in reducing pollution.
Physicians at Alberta Children's Hospital successfully completed the world's first liver cell transplant on a Canadian baby with Urea Cycle Disorder, improving ammonia levels and buying time for a potential liver transplant. The procedure was performed as part of a research trial sponsored by Cytonet LLC.
USDA researchers have developed a method to capture and recycle ammonia from livestock waste, reducing harmful emissions and concentrating nitrogen for fertilizer. The system uses gas-permeable membranes, achieving an average removal rate of 45-153 mg/liter per day.
Researchers at Harvard University found that certain atmospheric particles can resist chemical aging in a jelly-like phase, challenging current climate models. This discovery may impact the formation of clouds and light absorption.
Researchers at Georgia Tech discovered the importance of a hydrogen bonding water network in photosystem II, a critical step in photosynthesis. The study suggests that mimicking this process could provide new supplies of oxygen and hydrogen as a by-product of electricity production.
Researchers found that induced hyperammonaemia significantly increases daytime sleepiness in patients with cirrhosis. Higher blood ammonia levels reduce the ability of cirrhotic patients to produce restorative sleep. This study suggests that reducing daytime sleepiness may result in improved sleep at night.
A new logistics model for biofuel raw materials is proposed by MSU researchers, utilizing regional biomass processing depots to process feedstocks before shipping to refineries. This approach aims to reduce transportation costs and distances, while providing economic benefits to farmers who own part of the depots.
A team of chemists has gained new understanding of the Haber-Bosch process, which converts atmospheric nitrogen into ammonia. By mimicking the process in solution using an iron-potassium complex, they discovered that three iron atoms break the strong N-N bonds to form a complex with Fe3N2 core.
A new study by Rice University and the University of Houston reveals seasonal variations in ammonia levels in Houston's atmosphere, affecting air quality. Ammonia levels are highest in summer and lowest in winter, with a mean concentration of 3.1 ppb during summer months.
Feeding cows natural plant extracts can reduce dairy farm odors and feed costs. Adding tannins to cow feed reduces ammonia emissions from barn floors and fertilized fields by 28-49%. This study aims to provide a practical solution for the US dairy industry, which has been petitioned to regulate ammonia under the Clean Air Act.
Researchers have created a reusable system to store and extract hydrogen from ammonia borane, a stable solid, making it suitable for various applications. The system is air-stable and efficient, with potential uses in motor-driven cycles and small aircraft.
Researchers develop method to extract ammonium from liquid animal manure using gas-permeable membrane technology, removing 50% of dissolved ammonium in 20 days. The captured ammonia can be converted into ammonium sulfate fertilizer, potentially offsetting the cost of removal and mitigating environmental pollution.
Agricultural Research Service scientists monitored emissions from a commercial dairy in southern Idaho, revealing that open-lot pens generate the majority of facility's ammonia, nitrous oxide, and methane emissions. The study provides detailed data on how large-scale dairy facilities contribute to greenhouse gas emissions.
Researchers discovered that natural plant compounds known as tannins can reduce both nitrogen cow excretion and microbial enzyme activity in manure, resulting in a significant decrease in ammonia emissions. The study found that dietary tannin cut ammonia emissions from cows' manure by an average of 30%.
Researchers have isolated a new species of ammonia oxidizing archaeon from soil, named Nitrososphaera viennensis. The discovery has significant implications for agriculture, as ammonia oxidation affects nitrogen availability for plants and groundwater nitrate levels.
Researchers have revealed a new single-stage method for recharging the hydrogen storage compound ammonia borane, enabling the potential use of hydrogen in vehicles. This breakthrough could reduce the expense and complexity of the recycle stage, making hydrogen a more attractive fuel option.
Researchers found that anaerobic lagoons in North and South Carolina have high levels of nitrogen-cycling genes but low denitrification enzyme activity, leading to acidification and eutrophication of surrounding ecosystems. The study highlights the need for improved waste management practices to minimize environmental harm.
Researchers found large amounts of ammonia in an asteroid, which could have provided a sustained source of reduced nitrogen essential for life. This discovery has significant implications for the origins-of-life theory and the potential for extraterrestrial life.
Researchers found two new sanitizers to be more effective at removing bacteria from restaurant dishes than traditional methods, containing fewer toxic chemicals. The sanitizers, PROSAN and neutral electrolyzed oxidizing water, were tested on various types of dishware and showed a significant reduction in bacterial load.
Scientists at the University of Cambridge have made breakthroughs in the Haber-Bosch process, aiming to produce fertilizers more efficiently while reducing energy consumption. Their innovative approach uses single-crystal iron samples and ultra-high vacuum conditions to achieve significant improvements.