Articles tagged with Nitrogen
A new study finds N2O emissions are increasing faster than any emission scenario developed by the IPCC, posing a significant threat to climate goals. Human-induced emissions dominate releases, with East Asia, South Asia, Africa, and South America being the largest contributors.
Scientists have found a new metabolic pathway that can be disrupted with acetohydroxamic acid, preventing many plant fungi from invading the host plant. The discovery provides a new approach to pathogen control using an existing active ingredient.
Scientists discovered that arbuscular mycorrhizal fungi supply nitrogen to plants through a newly identified protein, enabling crops like rice to thrive with reduced fertilizer use. The finding could lead to more sustainable agricultural practices and reduce environmental impact by minimizing agrochemical use.
Permafrost erosion in Siberia's Lena Delta has increased by nearly 16 metres since the 1960s, with 15-20 metre annual losses reported. The thawing releases significant amounts of carbon and nitrogen, intensifying the greenhouse effect.
Researchers from the University of Würzburg have developed a method to convert nitrogen to ammonium at room temperature without using transition metals. The key to this process is the use of boron and water, which enables sequential reactions that bring the team close to producing ammonia.
Researchers have developed a novel approach to manipulate catalyst active centers at the subnanometer scale, using nano-confinement to host multiple Fe and Cu single atoms in graphitic carbon nitride. This strategy enhances electrocatalytic performance and efficiency, particularly for nitrogen reduction reactions.
A study analyzing the February 2020 lockdown in China found a significant drop in nitrogen oxides, a gas associated with smog, of 50% compared to expected levels. However, aerosol particle amounts and cloud properties showed no dramatic changes, suggesting negligible climate-related impacts.
Researchers found that the expression of species in a mixture can differ greatly across locations, highlighting the need for customized cover crop mixes. The study shows that low soil inorganic nitrogen favors legume species while a shorter growing season favors triticale.
Scientists at Tokyo Institute of Technology have created a high-performing catalyst for ammonia synthesis using cerium nitride, leveraging the role of nitrogen vacancies. The new catalyst's performance is comparable to that of ruthenium-based ones, offering a potential eco-friendly alternative.
Scientists at Soochow University successfully alter the rate-determining step of electrochemical ammonia synthesis using cobalt single clusters, achieving outstanding yield rates and Faradaic efficiency. The new strategy reduces energy loss and cuts fundamental costs for sustainable NRR systems.
Researchers at Yale University have developed a method to combine atmospheric nitrogen with benzene to produce aniline, a precursor to various synthetic materials. This breakthrough could lead to the creation of new products such as dyes and pharmaceuticals.
Researchers found that setting vehicle ventilation correctly can reduce exposure to pollutants like PM2.5 and NO2 by up to 49% and 34%, respectively. By closing windows and taking a 'cleaner' route, passengers can significantly lower their inhalation dose of air pollution.
Northern peatlands store large amounts of carbon and nitrogen, but are vulnerable to permafrost thaw under climate change. If thawed, these peatlands could become a source of atmospheric carbon, leading to increased greenhouse gas emissions.
Researchers used airplanes and satellite data to uncover neighborhood-level differences in nitrogen dioxide levels in Houston. The study found that areas with higher pollutant levels were predominantly low-income, non-white, and Hispanic neighborhoods, while high-income, white areas had lower pollution levels.
The University of Tennessee Extension's Cotton Nitrogen Management publication has been awarded a Blue Ribbon by the American Society of Agricultural and Biological Engineers. The publication, authored by Lori Duncan and Tyson Raper, provides recommendations for optimizing nitrogen use efficiency in cotton production.
A recent study by researchers at the University of Guam found that cycad plants share nitrogen and carbon through the soil, creating habitable environments for other organisms.
Researchers at the University of California, Irvine have discovered a key mechanism in breaking down nitrogen gas, a crucial step towards developing more efficient and sustainable methods. The breakthrough could lead to cheaper and more energy-efficient ways to produce fertilizers and alternative fuels.
Researchers at Tokyo Institute of Technology have developed a new strategy for producing ammonia using lanthanum and nickel as catalysts. The new catalyst relies on nitrogen vacancies to split N2 molecules into H2, which is then converted into NH3.
The Schmidt Marine Coastal Pollution Challenge selected four innovative solutions to address the urgent need to eliminate the causes and reduce the impact of coastal pollution, specifically nitrogen and phosphorous. The winning projects include a biodegradable plastic alternative and a low-cost nitrogen sensor technology.
A Montana State University professor's research on plant chemistry published in Global Change Biology reveals increased greening across the Northern Great Plains and Northern Rockies. The study found decreased levels of nitrogen and increased levels of carbon in recent plant samples, as well as improved water use efficiency.
Researchers found that microbes inside hydrocarbon seeps have less efficient, fast-growing lifestyles while those outside have slower but more efficient lives. This difference in lifestyle could mirror how microbes behave higher in the water column.
Researchers have successfully produced porous, nitrogen-containing graphene ribbons exhibiting semiconducting properties, which is essential for their potential applications in electronics. These new materials could display extraordinary magnetic properties, making them suitable for quantum computing applications.
A global analysis reveals a significant gap between scientific knowledge and policy responses to nitrogen pollution. Agricultural sectors dominate policies that incentivize nitrogen use, while few aim to reduce pollution.
Researchers discovered that 85.8% of lake water samples were supersaturated with nitrogen gas, suggesting a lack of balance between nitrogen inputs and fixation. The findings highlight the need for terrestrial nitrogen sources to mitigate nitrogen loss in the lakes.
Researchers used a statistical method to remove weather influences from air pollution data in Saxony, finding that traffic density is the most important factor. Adjusted for weather, NOx concentrations decreased by an average of 10 micrograms per cubic meter between 2015 and 2018.
A study published in Circulation Research found that exposure to nitrogen dioxide from gas cookers can lower blood pressure by 5 mm Hg. Blood levels of nitrite also increased after exposure, suggesting a possible mechanism linking air pollution to cardiovascular health. The findings suggest that cooking with gas may have a beneficial e...
Scientists discovered that oxygen plasma can enhance electrochemical performance of electrodes in supercapacitors, outperforming nitrogen. This breakthrough could contribute to the development of new generation supercapacitors with improved electrochemical characteristics.
A study by Dr. Jiangen Zhou et al. found that fish farming significantly changes microbial communities and decreases nitrogen levels, offering a potential solution to reduce nitrate pollution in ponds.
Researchers synthesized BP-structured nitrogen using diamond anvil cell apparatus and high-power laser heating. The new material exhibits colossal Raman intensity and unusual optical properties.
Satellite measurements revealed a 48% drop in nitrogen dioxide densities over China following government announcements of the first reported COVID-19 case and lockdowns. This significant reduction is attributed to a substantial decrease in fossil fuel consumption, with an additional 21% drop compared to 2015-2019.
Recent research suggests that nitrogen in permafrost soils could be a major contributor to climate change, with potentially significant consequences. Scientists are studying the decomposition of organic matter and its impact on nitrogen availability, which could lead to high N2O emissions.
Scientists at Empa used 3D laser printing to produce materials with specific magnetic properties. By varying the size and lifetime of the melt pool, they were able to create alloy compositions with precise control over nitrogen content.
Researchers analyzed agricultural systems using multiomics approach and found that organic nitrogen fuels plant growth. They also discovered differences in bacteria in the rhizosphere, which make nitrogen available to plants.
A new study found that meteorite crashes can create amino acids, the building blocks of proteins, by simulating ocean impact reactions. The discovery supports extraterrestrial delivery as a possible origin of life's essential molecules on Earth and Mars.
A team of researchers has discovered a way to create a nitrogen-rich fertilizer using human waste, which could increase agriculture yields in developing countries and reduce groundwater contamination. The new method involves recycling nitrogen from urine through a process involving biochar and CO2 priming.
Human activity significantly disrupts the natural balance of nitrogen, posing a threat to terrestrial and aquatic life. The special issue examines the cascading consequences of rising nitrogen levels in circulation.
New research suggests nitric acid can boost particle growth in cold climates, forming particles even in highly polluted cities. This mechanism also affects the oxidation characteristics of organic compounds, potentially reducing aerosol formation and contributing to climate warming.
The PaNDiv experiment reveals that increased nitrogen application shifts the plant community towards fast-growing species, leading to faster litter decomposition. This change has a feedback loop effect, producing more nitrogen in the soil, which further accelerates decomposition.
A new study by researchers at the University of Copenhagen found that king penguins in Antarctica emit massive amounts of nitrous oxide via their feces, which is 300 times more polluting than CO2. The high levels of nitrous oxide are due to the combination of guano with hydrogen sulfide and other gases.
Lockdowns led to significant reductions in nitrogen dioxide and particulate matter pollution globally, with decreases of up to 60% in some regions. However, surface ozone levels increased by a factor of 1.5-2 in northern China due to decreased nitrogen dioxide pollution.
Researchers found that a transcription factor TGA1 accelerates plant growth in response to nitrogen, leading to increased biomass. The study's findings have implications for improving nitrogen use efficiency in crops, benefiting agriculture and sustainability.
A recent study uses the Noah LSM with multi-parameterization options to quantify the impacts of nitrogen dynamics on terrestrial carbon and water cycles in China. The results show improved simulations of gross primary productivity and leaf area index, with reduced errors and better spatial patterns.
Scientists have detected 4-billion-year-old nitrogen-bearing organic compounds in a Martian meteorite, suggesting early Mars may have been habitable and favourable for life to start. The discovery provides strong evidence that evidence for early life can be preserved and detected today.
The study reveals that the Levänluhta population relied on a diverse range of livelihoods, including terrestrial, marine, and freshwater food sources. This diversity allowed them to survive a severe climate disaster in the 540s AD.
Researchers found that cover-crop biomass and carbon to nitrogen ratios significantly influenced weed suppression, with certain mixtures producing more effective control. Cover crops also promoted greater crop yields when used as a sole weed control measure.
A new study found that regions with permanently high levels of nitrogen dioxide have significantly more deaths from Covid-19. This correlation suggests that persistent air pollution may have contributed to poorer health in affected populations, making them more susceptible to the virus.
Researchers found that reducing ammonia emissions alone may not significantly decrease reduced forms of nitrogen deposition, which can still drop by only 60-80% despite abatement efforts. The study suggests a more comprehensive approach to mitigate nitrogen pollution is needed.
Soil microorganisms decompose organic nitrogen, releasing inorganic nitrogen for plant growth. The initial burst of microbial activity after CO2 flush is a key indicator of forthcoming soil nitrogen mineralization.
Researchers used a new geochemical tool to analyze volatile elements in Earth's interior, revealing that nitrogen has been present since the planet's formation. The method, which identifies air contamination, provides valuable insights into the evolution of our planet and may also be used to monitor volcanic activity.
Researchers have developed a new tool to predict volcanic eruptions by analyzing the composition of gases in the atmosphere. The tool uses precise measurements to identify the contribution of the atmosphere and Earth's mantle to these gases, allowing for more accurate predictions of future eruptions.
A recent study found that reducing sulfur dioxide emissions alone can significantly decrease air pollution, mainly due to the stability of ammonium nitrate formed with nitrogen oxides and ammonia. In China, nitrogen dioxide control is more effective in reducing surface PM2.5 concentrations.
Researchers at Nagoya University have discovered a hormone produced in nitrogen-starved leaves that regulates the demand and supply of nitrogen between plant shoots and roots. The hormone, CEPDL2, enhances nitrate uptake efficiency, potentially minimizing fertilizer use.
A new research study led by Miss Yu Yan Yau and Dr Benoit Thibodeau from the University of Hong Kong found that reducing fossil fuel combustion can significantly decrease hypoxic zones in Chinese coastal seas, with the South China Sea being the most sensitive area to nitrogen input
Research by plant pathologist Gary Stacey aims to develop effective inoculation protocols for biological nitrogen fixation in non-leguminous crops. The study found that bacterial colonization leads to significant shifts in plant metabolism, with some metabolites more abundant in inoculated plants.
Recent studies challenge traditional approaches to understanding air pollution impacts by highlighting the importance of dry deposition processes, particularly ammonia. Ammonia plays a vital role in nitrogen deposition and haze pollution, with global concentrations increasing worldwide over recent decades.
Research on ancient hornwort genomes has identified genes that boost carbon dioxide concentration, increasing yield, and those promoting symbiosis with bacteria for nitrogen acquisition. This discovery may lead to more efficient crops requiring less fertilizer.
Researchers sequenced three hornwort genomes, revealing genes that could boost crop efficiency and reduce nitrogen fertilizer use. The findings shed light on the evolution of early land plants and provide insights into the unique biology of hornworts.
Researchers identified ammonium salts as a substantial source of nitrogen in comets like 67P/Churyumov-Gerasimenko. This discovery resolves the long-standing N/C ratio discrepancy between comets and the Sun.
A cross-sectional study of El Algar society in the Iberian Peninsula reveals similar diets but different management of livestock among communities, with a larger share of animal protein restricted to elite members. The analysis also shows a strong reliance on cereal farming and animal manure use.
Researchers find freeze-drying method yields more accurate results for measuring soil N reactive gas fluxes and total emissions. This approach could lead to revised understanding of global nitrogen cycle mechanisms.