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Methane Emissions - Crossref

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Last Updated: 08 June 2022

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Application of a hand-held laser methane detector for measuring enteric methane emissions from cattle in intensive farming

"Abstract" is a form of methane measurements from enteric fermentation of ruminants in the field. This study was designed to establish a uniform way for measuring CH4 production in cattle and determine the safety of the technique to detect differences in CH4 emissions from cattle raised in different forage-to-concentrate ratios. Each group was given three separate diets: high FC ratio with low energy concentrate, high FC ratio with high energy concentrate, and low FC ratio with high energy concentrate – all three groups were formulated. When a combination of two normal distributions was assumed, the mean correlation coefficient between the CH4 concentrations from respiration and eructation was highest in Experiment 1. "Specifically, compared to LFC-HEC, HFC-LEC obtained 48 percent and 57% higher CH4 concentrations in exhaled gas from respiration and eructation, respectively. ".

Source link: https://doi.org/10.1093/jas/skac211


Glacial/interglacial wetland, biomass burning, and geologic methane emissions constrained by dual stable isotopic CH 4 ice core records

"Significance" ice is a unique archive of past atmospheres, according to "Significance Polar ice is a remarkable archive of past atmosphere. " Here, we have methane stable isotope data for the latest and two previous interglacials, as well as their preceding glacial maxima. In comparison, geologic methane leaks are stable under a variety of climatic conditions.

Source link: https://doi.org/10.1073/pnas.1613883114


Mode of action uncovered for the specific reduction of methane emissions from ruminants by the small molecule 3-nitrooxypropanol

"Significance Methane emission from the ruminant livestock industry" is not limited to climate change alone, but also an energy loss and a decrease in feed efficiency" are among the observable digestive systems' u2014 emissions.

Source link: https://doi.org/10.1073/pnas.1600298113


Cold season emissions dominate the Arctic tundra methane budget

"Emissions of methane in the cold season have been attributed to the extended u201czero curtainu201d period, when soil temperatures are expected to be near 0 u00b0C, suggesting that total emissions are highly dependent on soil temperature and other factors, such as snow depth. ".

Source link: https://doi.org/10.1073/pnas.1516017113


Unexpected Methane Emissions From Old Small Fishing Vessels in China

"The emission factors of CH4 from OSFVs are on average 5. 2 g CH4 per 1 kg fuel consumed, approaching EF CH4 of LNG-fueled ships and being at least six times EF CH4 of other types of diesel-fueled ships. " We estimate that CH 4 emissions from OSFVs in China amount to 560,240 t per year, which is comparable to the total CH4 emission from all LNG-fueled ships worldwide.

Source link: https://doi.org/10.3389/fenvs.2022.907868


Assessment of the Potential for Methane Emissions Caused by the Livestock Sector in the Region of Kankan, Guinea

"Man has always planned his living space near animal farms," says the author. The methodology employed for this research involves a field survey of animal herds, as well as the use of databases from various livestock organizations and formulas, allowing us to calculate methane emissions from the sector. "The findings of this survey are the first estimate of CH4 emissions risks due to the livestock industry in Kankan's administrative region. ".

Source link: https://doi.org/10.9734/jenrr/2022/v11i230270


Effect of dietary crude protein and forage contents on enteric methane emissions and nitrogen excretion from dairy cows simultaneously

In a 4 u00d7 4 Latin square design with four 18-day periods, twelve randomly selected post-peak lactating Holstein cows were randomly assigned to four treatments [37. 4% vs. 53. 3% of DM] and two dietary forage values [36. 3 percent vs 18. 5% of DM] and two dietary forage levels [36. 4% vs 18. 5% of DM] randomly distributed [15. 6% vs 18. 5% of u00d a [15 u00d7 2 factorial u00d7 vs [37. vs [37. In cows raised LF compared to HF, milk fat content decreased in comparison to HF. About Milk true protein N was not affected by diet CP content, but it was higher for LF than HF in comparison to HF. In cows fed LF, milk true protein was higher than in cows fed LF than HF, and it was also higher in cows fed LP than with HP. In cows fed HP compared to LP, the percentage of urinary N excretion was higher than in LP, but was not affected by diet CP content. In comparison to the HF diet, total N excretion as a result of N intake did not differ between HP and LP, but cows fed LF were generally lower than those on the HF diet. With decreasing dietary CP or forage contents, both milk urea N and blood urea N decreased. According to a purine derivative study, there was a correlation between diet CP and forage content on microbial protein synthesis. For high forage and low protein treatments, Rumen microbial protein synthesis was found to be lower. Despite reduced CP diets, Cows on reduced CP diets had low manure N outputs and improved milk true protein production efficiencies, even though dietary forage content. ".

Source link: https://doi.org/10.1071/an15498


Engineering Poster E4: Strength in numbers: how the different satellite systems used to monitor methane emissions from space have different, yet complementary, capabilities to help the oil and gas industry meet its decarbonisation goals

"Poster E4 Satellites are a cost-effective method of tracking methane emissions around the world. " When available, the performance parameters of several current and future satellite systems will be displayed and compared, as well as recent examples. In providing key information to stakeholders and allowing action to minimize emissions, the importance of factors such as frequency of revisit, detection threshold, precision, and spatial resolution will be explored and contrasted with the oil and gas industry's requirements for getting a more complete understanding of its methane emissions in providing key data to stakeholders and enabling action to mitigate emissions will be discussed and compared with the needs of the oil and gas industry in getting a more complete understanding of the oil and gas industry's needs. The results from GHGSat€u2019' second generation of high-resolution satellites displaying measurements of methane plumes at oil and gas plants around the world will be shown to illustrate some of the benefits of the technology. Another eight satellites are set to be launched by mid-2023 and another eight satellites are planned to be launched by mid-2023.

Source link: https://doi.org/10.1071/aj21416


Concurrent 22. Presentation for: Strength in numbers: how the different satellite systems used to monitor methane emissions from space have different, yet complementary, capabilities to help the oil and gas industry meet its decarbonisation goals

"Presented on Thursday 19 May: Session 22 Satellites are a useful device in monitoring methane emissions around the world. " This paper will explore how these devices complement each other's strengths and weaknesses in order to provide actionable information to the oil and gas industry. Many current and future satellite systems will be displayed and compared, as well as current and future examples as available. In providing key data to stakeholders and encouraging action to minimize emissions, the importance of factors such as frequency, detection threshold, precision, and spatial resolution will be discussed and compared with the requirements of the oil and gas industry in providing key metrics and assisting steps to mitigate emissions. Results from GHGSatu2019' second generation of high-resolution satellites displaying measurements of methane plumes at oil and gas facilities around the world will be displayed to demonstrate some of the technology's benefits.

Source link: https://doi.org/10.1071/aj21379

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions