Showing 461 - 480 results of 493 for search '"methane"', query time: 0.06s Refine Results
  1. 461

    Microbial community differentiation in vent chimneys of the Lost City Hydrothermal Field reflects habitat heterogeneity by Osama M. Alian, William J. Brazelton, Karmina A. Aquino, Katrina I. Twing, H. Lizethe Pendleton, Gretchen Früh-Green, Susan Q. Lang, Matthew O. Schrenk, Matthew O. Schrenk

    Published 2025-01-01
    “…Shotgun metagenomic analyses reveal differences among genes predicted to be involved in carbon, methane, nitrogen and sulfur cycling with respect to their correlations to the abundances of specific minerals. …”
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  2. 462

    Characteristics of Soil Profile Greenhouse Gas Concentrations and Fluxes of Alpine Grassland as Affected by Livestock Grazing by Mingyuan Yin, Xiaopeng Gao, Yanyan Li, Yufeng Wu, Wennong Kuang, Fanjiang Zeng

    Published 2025-01-01
    “…Results showed that soil at lower depths (30–60 cm) had higher carbon dioxide (CO<sub>2</sub>) concentrations but lower methane (CH<sub>4</sub>) concentrations. In contrast, soil profile nitrous oxide (N<sub>2</sub>O) concentration did not vary with depth, possibly resulting from the relatively low soil moisture in the semiarid grassland, which increased air diffusivity across the soil profile. …”
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  3. 463

    The role of solar thermal hydrogen production technologies in future energy solutions: A review by Md. Shameem Hossain, Md. Nasirul Islam, Khaza Shahriar, Mohammad Mujtaba Hasan, Md. Sohag Hossain

    Published 2025-01-01
    “…It was found that thermochemical water splitting is the top option if efficiency is the top priority. HTWE and solar methane cracking are the top choices for low environmental impact. …”
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  4. 464

    The N-acetyltransferase 10 inhibitor [11C]remodelin: synthesis and preliminary positron emission tomography study in mice by Rui Luo, Yiding Zhang, Katsushi Kumata, Lin Xie, Yusuke Kurihara, Masanao Ogawa, Tomomi Kokufuta, Nobuki Nengaki, Feng Wang, Ming-Rong R. Zhang

    Published 2025-01-01
    “…Results [11C]Remodelin was synthesized by the reaction of a boron ester precursor (1) with hydrogen [11C]cyanide, which was prepared from the cyclotron-produced [11C]carbon dioxide via [11C]methane. The decay-corrected radiochemical yield of [11C]remodelin was 6.2 ± 2.3% (n = 20, based on [11C]carbon dioxide) with a synthesis time of 45 min and radiochemical purity of > 90%. …”
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  5. 465

    Pore Structure and Its Fractal Dimension: A Case Study of the Marine Shales of the Niutitang Formation in Northwest Hunan, South China by Wei Jiang, Yang Zhang, Tianran Ma, Song Chen, Yang Hu, Qiang Wei, Dingxiang Zhuang

    Published 2025-01-01
    “…To analyze the pore structure and fractal characteristics of marine shale in the lower Cambrian Niutitang Formation in northwestern Hunan Province, China, the pore characteristics of shale were characterized using total organic carbon (TOC) content, field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), low temperature nitrogen adsorption (LT-N<sub>2</sub>GA) and methane adsorption experiments. The pore surface and pore space fractal dimensions of samples were calculated, respectively. …”
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  6. 466

    Differential controls on CO2 and CH4 emissions from the free-flowing Neretva River, Bosnia and Herzegovina by Martin Dalvai Ragnoli, Thea Schwingshackl, Serafine Kattus, Julius Lissy, Elisabeth Weninger, Gabriel Singer

    Published 2023-12-01
    “… Streams and rivers emit methane (CH4) and carbon dioxide (CO2), two greenhouse gasses contributing to global warming. …”
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  7. 467

    Isotopic Composition of Abiogenic Gas Produced in Closed-System Fischer-Tropsch Synthesis: Implications for the Origins of the Deep Songliao Basin Gases in China by Zhifu Wei, Yongli Wang, Gen Wang, Xueyun Ma, Wei He, Ting Zhang, Xiaoli Yu, Yan-Rong Zou

    Published 2019-01-01
    “…The results show that closed-system Fischer-Tropsch synthesis of gaseous hydrocarbon isotopes exhibits a partial reverse order, which includes the reverse order of methane and ethane such as δ13C-C1>δ13C-C2<δ13C-C3 and δ2H-C1>δ2H-C2<δ2H-C3. …”
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  8. 468

    Life cycle greenhouse gas emissions of hydrogen imported by maritime transportation: A South Korean case study by Gyuna Kwak, Juha Lee, Yujin Jung, Wonjae Choi

    Published 2025-04-01
    “…This study compares five hydrogen production processes–coal gasification, natural gas steam methane reforming, grid electrolysis, renewable electrolysis, and nuclear electrolysis–and two hydrogen-import processes using liquid hydrogen and ammonia. …”
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  9. 469

    Effects of Different Technological Forms of the Perilla frutescens in the Diet on Ruminal Fermentation, Milk and Plasma Fatty Acid Composition, Ruminal Biohydrogenation and Milk Qu... by Selma Büyükkılıç Beyzi, İsmail Ülger, Emrah Kaya, Buğra Ocak, Yusuf Konca

    Published 2024-11-01
    “…Perilla oil supplementation in different forms to the diet did not affect ruminal pH, VFA and methane production. Perilla oil supplementation in different forms to the diet did not also affect the concentration of blood serum glucose, cholesterol and non‐esterified fatty acids. …”
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  10. 470

    The carbon footprint of pasture-based buffalo milk production in Colombia by Andrés F. Pérez, Felipe Vélez S., Juan F. Naranjo R.

    Published 2023-11-01
    “…These greenhouse gas emissions encompassed methane (CH4) from enteric fermentation and excretions left in paddocks, nitrous oxide (N 2 O) from excretions deposited on pastures and fertilizer application, and carbon dioxide (CO2 ) from lime and urea application, as well as the burning of fossil fuels. …”
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  11. 471

    Advanced perspective on heavily phosphorus-doped diamond layers via optical emission spectroscopy by Kil-dong Sung, Stefan Andrei Irimiciuc, Michal Novotný, Zdeněk Weiss, Pavel Hubík, Jaromír Kopeček, Martin Vondráček, Vincent Mortet

    Published 2025-01-01
    “…In this study, optical emission spectroscopy (OES) was used to correlate the emission intensity ratio of PH to CH radicals (IPH/ICH) with phosphorus concentration ([P]) in diamond layers synthesized under varying phosphine ([PH3]/[H2]) and methane ([CH4]/[H2]) concentrations using microwave plasma-enhanced chemical vapor deposition. …”
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  12. 472

    Concentrated Solar Power and Photovoltaic Systems: A New Approach to Boost Sustainable Energy for All (Se4all) in Rwanda by Noel Hagumimana, Jishi Zheng, Godwin Norense Osarumwense Asemota, Jean De Dieu Niyonteze, Walter Nsengiyumva, Aphrodis Nduwamungu, Samuel Bimenyimana

    Published 2021-01-01
    “…Although Rwanda has natural energy resources (e.g., hydro, solar, and methane gas, etc.), the country currently has an installed electricity generation capacity of only 226.7 MW from its 45 power plants for a population of about 13 million in 2021. …”
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  13. 473

    Low-Cost LoRa-Based System for Continuous GHGs Monitoring in Cattle: Enhancing Agricultural Sustainability by Boonyarit Kumkhet, Nisit Pukrongta, Noraset Wichaipanich, Pubet Sangmahamad, Tanaporn Pechrkool, Virote Pirajnanchai, Patchadaporn Sangpet, Utthapon Issara, Attaphongse Taparugssanagorn

    Published 2025-01-01
    “…This study introduces and validates a low-cost, LoRa based system for the continuous monitoring of methane (CH4) and carbon dioxide (CO2) emissions in cattle. …”
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  14. 474

    Influence of minor hydrocarbon seepage on sulfur cycling in marine subsurface sediments by E. Schnabel, A. Vuillemin, C. C. Laczny, B. J. Kunath, A. R. Soares, A. J. Probst, R. Di Primio, J. Kallmeyer

    Published 2025-02-01
    “…Metagenomic and metatranscriptomic data indicated metabolic potential and activity towards sulfate reduction and anaerobic oxidation of methane (AOM). Expression of functional marker genes (<i>aprAB</i>, <i>dsrAB</i>, <i>mcrA</i>) revealed metabolic activities by sulfate-reducing Desulfobacterota and methanotrophic ANME-1 archaea sustained by HC traces in the sediment. …”
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  15. 475

    Degenerated vision, altered lipid metabolism, and expanded chemoreceptor repertoires enable Lindaspio polybranchiata to thrive in deep-sea cold seeps by Yujie Yan, Inge Seim, Yang Guo, Xupeng Chi, Zhaoshan Zhong, Dantong Wang, Mengna Li, Haining Wang, Huan Zhang, Minxiao Wang, Chaolun Li

    Published 2025-01-01
    “…Abstract Background Lindaspio polybranchiata, a member of the Spionidae family, has been reported at the Lingshui Cold Seep, where it formed a dense population around this nascent methane vent. We sequenced and assembled the genome of L. polybranchiata and performed comparative genomic analyses to investigate the genetic basis of adaptation to the deep sea. …”
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  16. 476

    Development of new powdery mildew resistant lines in garden pea (Pisum sativum L.) using induced mutagenesis and validation of resistance for the er1 and er2 gene through molecular... by Akhilesh Sharma, Devinder Kumar Banyal, Vinod Janardan Dhole, Bansuli, Ranbir Singh Rana, Rajesh Kumar, Prabhat Kumar, Nimit Kumar, Srishti, Arshia Prashar, Vivek Singh, Anoushka Sharma

    Published 2025-01-01
    “…The efforts were made to develop PM-resistant mutants of popular pea varieties “Lincoln” and “Azad P-1” through induced mutations by following gamma irradiation (300, 400, 500, and 600 Gy) and chemical mutagenesis, i.e., ethyl methane sulfonate (EMS) (0.3% and 0.4%). The screening of 13,868 M2 progenies at Kukumseri (summer season) followed by M3 generation at Palampur (winter season) resulted in the isolation of six putative PM-resistant mutants. …”
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  17. 477

    Formation of the Figge Maar Seafloor Crater During the 1964 B1 Blowout in the German North Sea by Jens Karstens, Jens Schneider von Deimling, Christian Berndt, Christoph Böttner, Michel Kühn, Benedict T. I. Reinardy, Axel Ehrhardt, Jonas Gros, Bettina Schramm, Dirk Klaeschen, Judith Elger, Matthias Haeckel, Mark Schmidt, Sven Heinrich, Philipp Müller, Frithjof Bense

    Published 2022-12-01
    “…Hydroacoustic and geochemical data indicate that the Figge Maar nowadays emits primarily biogenic methane, predominantly during low tide. The formation of Figge Maar illustrates hazards related to the formation of secondary fluid pathways, which can bypass safety measures at the wellhead and are thus difficult to control.…”
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  18. 478

    Effects of converting cropland to grassland on greenhouse gas emissions from peat and organic-rich soils in temperate and boreal climates: a systematic review by Alena Holzknecht, Magnus Land, Jacynthe Dessureault-Rompré, Lars Elsgaard, Kristiina Lång, Örjan Berglund

    Published 2025-01-01
    “…No significant differences in carbon dioxide (CO2) or methane (CH4) emissions were found. Emissions of nitrous oxide (N2O) from grasslands were found to be 7.55 kg ha−1 y−1 lower than from cropland, however the sensitivity analysis showed that the difference was not robust, making it uncertain whether conversion from cropland to grassland has a significant effect on N2O emissions from organic soils. …”
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  19. 479

    Effect of practicing water-saving irrigation on greenhouse gas emissions and crop productivity: A global meta-analysis by Mingdong Tan, Ningbo Cui, Shouzheng Jiang, Liwen Xing, Shenglin Wen, Quanshan Liu, Weikang Li, Siwei Yan, Yaosheng Wang, Haochen Jin, Zhihui Wang

    Published 2025-03-01
    “…The results showed that WSI significantly alleviated the agricultural greenhouse effect by reducing carbon dioxide (CO2) emission (ln RR = −0.084, 95 %CI: −0.139 to −0.028) and methane (CH4) emissions (ln RR = −0.551, 95 %CI: −0.640 to −0.462). …”
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  20. 480

    Reductive acetogenesis is a dominant process in the ruminant hindgut by Qiushuang Li, Jiabin Huo, Gaofeng Ni, Fan Zhang, Shizhe Zhang, Xiumin Zhang, Rong Wang, Jinzhen Jiao, Zhongtang Yu, Xuanxuan Pu, Yipeng Yue, Emilio M. Ungerfeld, Xiaoli Zhang, Jian Wu, Zhiliang Tan, Chris Greening, Min Wang

    Published 2025-01-01
    “…Conclusions These findings highlight an enrichment of acetogenesis in a key region of the gastrointestinal tract and reshape our understanding of ruminant hydrogen metabolism and how the H2 can be managed in accord to livestock methane mitigation efforts. Video Abstract…”
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