Search Results 1-20 of 12137

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Numerical Study on the Route of Flame-Induced Thermoacoustic Instability in a Rijke Burner

Dang Nannan , Zhang Jiazhong , Deguchi Yoshihiro

… The self-excited thermoacoustic instability in a two-dimensional Rijke-type burner with a center-stabilized premixed methane–air flame is numerically studied. …

Applied Sciences 11(4), 1590, 2021-02-10

IR
2

Enhanced methane production from cellulose using a two-stage process involving a bioelectrochemical system and a fixed film reactor

Sasaki Kengo , Sasaki Daisuke , Tsuge Yota , Morita Masahiko , Kondo Akihiko

… Enhancement of methane (CH4) production from organic molecules was previously accomplished through coupling a bioelectrochemical system (BES); …

Biotechnology for Biofuels 14(1), 7, 2021-01-06

IR
3

Analysis of Methane Production from Septage Sludge of Various Age

INAYAH Rohmatun , ISLAMI Brilyana Bela , PRIADI Cindy Rianti

Sanitation Value Chain 5(1), 40, 2021

J-STAGE
4

Study on ignition and combustion characteristics of prechamber ignition using rapid compression and expansion machine [in Japanese]

MORI Daisuke , WAKU Satoshi , YAMASHITA Riku , SHIMADA Fumio , TANOUE Kimitoshi , MORIYOSHI Yasuo

… Especially, by comparing the combustion characteristics of methane, which is the main component of natural gas, and propane, which is a representative of small-volume components, the effects of fuel types on the ignition and combustion characteristics of pre-chamber ignition system were investigated to elucidate of the effect of fuel property. …

Transactions of the JSME (in Japanese), 2021

J-STAGE
5

Efficacy of Bifidobacterium bifidum G9-1 in improving quality of life in patients with chronic constipation: a prospective intervention study

FUYUKI Akiko , YONEDA Masato , USUDA Haruki , WADA Koichiro , NAKAJIMA Atsushi , HIGURASHI Takuma , KESSOKU Takaomi , ASHIKARI Keiichi , YOSHIHARA Tsutomu , MISAWA Noboru , IWAKI Michihiro , KOBAYASHI Takashi , OHKUBO Hidenori

… Functional analysis showed that butanoate metabolism increased significantly, whereas methane metabolism decreased significantly. …

Bioscience of Microbiota, Food and Health, 2021

J-STAGE
6

Steam Reforming of Methane on Sponge Iron: Influence of Gas Composition on Reaction Rate

Ramos Ribeiro Tiago , Ferreira Neto João Batista , Rocha Poço João Guilherme , Takano Cyro , Kolbeinsen Leiv , Ringdalen Eli

… The generation of this gas occurs through methane reforming, which can be done in a reformer or inside the reduction shaft with the sponge iron as a catalyst. … The kinetics of steam reforming of methane catalyzed by sponge iron was studied at temperatures between 875°C and 1050°C. … Results showed that sponge iron acts as a catalyst and methane conversion is increased in higher temperatures and with higher H2/H2O ratio in the inlet gas. …

ISIJ International 61(1), 182-189, 2021

J-STAGE
7

Role of Hydrogen and Synthetic Methane under Long-term Scenarios toward Carbon Neutrality [in Japanese]

Sano Fuminori , Nagata Takahiro , Akimoto Keigo

… Methanation is a process forsynthesizing methane produced by zero emission hydrogen and CO2 …

Journal of Japan Society of Energy and Resources 42(1), 38-49, 2021

J-STAGE
8

Soil carbon flux research in the Asian region: Review and future perspectives

Liqing SHA , TERAMOTO Munemasa , Nam Jin NOH , HASHIMOTO Shoji , Meng YANG , Montri SANWANGSRI , Naishen LIANG

… With the absorption of atmospheric methane (CH4), upland soils become a large CO2 …

Journal of Agricultural Meteorology 77(1), 24-51, 2021

J-STAGE
9

Cultivation of Filtered Anaerobically Digested Sewage Sludge under Light Illumination for Improvement of Fertilizer Quality [in Japanese]

SUZUKI Satoshi , HIDAKA Taira , SANO Shuji , YOSHIDA Gen , NISHIMURA Fumitake

下水汚泥および生ごみなどの廃棄物系バイオマスの混合嫌気性消化で発生する嫌気性消化汚泥の肥料価値向上を目的として, 光合成細菌に着目した。下水汚泥を植種源に, 光照射条件で1ヶ月毎に人工培地を交換する継続培養を8ヶ月間行ったところ, 光合成細菌として知られるRhodospirillaceae科が菌叢解析でのリード数に対する検出割合が55%まで集積した。嫌気性消化脱水分離液に, 最初 …

Journal of Japan Society on Water Environment 44(1), 27-33, 2021

J-STAGE
10

Experimental and Numerical Investigation of Heat Transfer Processes in Rocket Engine Cooling Channels Operated with Cryogenic Hydrogen and Methane at Supercritical Conditions

HAEMISCH Jan , SUSLOV Dmitry , OSCHWALD Michael

… Hydrogen and Methane are two fluids that are either used or in discussion as propellants for upper and lower stage rocket engines. … Hydrogen is a very efficient and well known cooling fluid whereas the properties of methane as a cooling fluid are intensively investigated nowadays. … Cryogenic hydrogen and liquid methane were used as cooling fluids. …

TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 19(1), 96-105, 2021

J-STAGE
11

Effect of fuel property on the ignition and combustion characteristics of prechamber ignition

YAMASHITA Riku , WAKU Satoshi , MORI Daisuke , UENO Seiya , TANOUE Kimitoshi , MORIYOSHI Yasuo

… In our previous study, we observed the correlation between the torch flame and the main flame, which is so-called "prechamber combustion." In this study, the prechamber combustion characteristics of a gas engine were examined by visualization using a RCEM for methane and propane. …

Journal of Thermal Science and Technology 16(2), JTST0014-JTST0014, 2021

J-STAGE
12

Simultaneous OH PLIF/Chemiluminescence and stereoscopic PIV measurements of combustion oscillation onset in turbulent swirling lean premixed flames

ATAGI Yuki , SHIMURA Masayasu , TANAHASHI Mamoru

… For revealing the destabilization characteristics of combustion oscillation, methane-air turbulent lean premixed flames in a swirl-stabilized combustor were investigated by high-speed simultaneous measurements of stereoscopic particle image velocimetry (SPIV) arranged side by side, OH planar laser induced fluorescence (OH PLIF), OH chemiluminescence and pressure fluctuation. …

Journal of Thermal Science and Technology 16(1), JTST0010-JTST0010, 2021

J-STAGE
13

Influence of Tetra n-Butylammonium Chloride and Polysorbate 80 on the Kinetics of Methane Hydrate Formation

MOHAMMADI Abolfazl , FAZLI Rohollah Hassannezhad , ASIL Ali Garmroudi

… In this research, the kinetics of methane-TBAC semiclathrate hydrate forming has been focused on. … Finally, the influence of the beginning pressure of the cell on the kinetics of TBAC-methane hydrate forming is studied. …

Journal of the Japan Petroleum Institute 64(1), 22-28, 2021

J-STAGE
14

Methanol Biosynthesis from Methane Using Methylosinus trichosporium OB3b Grown in Medium Containing High Copper Concentration

MIYAJI Akimitsu

メタン資化細菌Methylosinus trichosporium OB3bによる常温常圧でのメタン転化反応におけるメタノール生産性を高めるため，50 μmol L–1の銅を含む培地で調製した細菌細胞を生体触媒として用いた。回分反応器におけるメタン転化反応のメタノール生産性は9.56 mmol g …

Journal of the Japan Petroleum Institute 64(1), 29-35, 2021

J-STAGE
15

Emissions from the Oil and Gas Sectors, Coal Mining and Ruminant Farming Drive Methane Growth over the Past Three Decades

CHANDRA Naveen , FUJITA Ryo , TAKIGAWA Masayuki , WATANABE Shingo , SAITOH Naoko , CANADELL Josep G. , PATRA Prabir K. , BISHT Jagat S. H. , ITO Akihiko , UMEZAWA Taku , SAIGUSA Nobuko , MORIMOTO Shinji , AOKI Shuji , JANSSENS-MAENHOUT Greet

… Methane (CH4) is an important greenhouse gas and plays a significant role in tropospheric and stratospheric chemistry. … Despite the relevance of methane (CH4) in human-induced climate change and air pollution chemistry, there is no scientific consensus on the causes of changes in its growth rates and variability over the past three decades. …

Journal of the Meteorological Society of Japan. Ser. II, 2021

J-STAGE
16

Basics, Research and Development of Methane Fermentation, Demonstration Tests and Real Plants, and Creation of Resource Recycling-oriented Town(Part 3) [in Japanese]

木田建次

日本醸造協会誌 115(12), 732-750, 2020-12
17

World's First Measurement of Strength and Stiffness of Shallow Natural Gas Hydrate Deposits in the Deep Seafloor : Acquisition of key physical properties related to the development of recovery technology of massive gas hydrates [in Japanese]

米田純 , 木田真人 , 今野義浩 , 神裕介 , 森田澄人 , 天満則夫

自動車技術 = Journal of Society of Automotive Engineers of Japan 74(12), 97-102, 2020-12
18

Factors Influencing the Willingness to Join CBO Biogas Self-Help Group in Mulyorejo Urban village and Karangnongko Village in Malang, Indonesia

Prayitno Gunawan , Annisa Nurul Hakim , Meidiana Christia

… This study determines the factors influencing the respondents' willingness to join CBO methane gas (biogas) for green energy in Mulyorejo Urban village and Karangnongko villages in Malang City and Malang Regency, respectively. … The results showed that the chances of the respondents entering Mulyorejo urban village could reach 99 % when factors such as employment, methane gas benefits, finance, education, as well as invitations from family, friends, neighbors, and government were involved. …

Evergreen 7(4), 468-480, 2020-12

IR DOI
19

Dual stable isotope characterization of excess methane in oxic waters of a mesotrophic lake

Tsunogai Urumu , Miyoshi Yuko , Matsushita Toshiyuki , Komatsu Daisuke D. , Ito Masanori , Sukigara Chiho , Nakagawa Fumiko , Maruo Masahiro

… To determine the source of excess methane in oxic, surface‐water columns often found in freshwater environments, we measured the in situ concentration and stable isotopic compositions (δ13C and δ2H) of methane in Lake Biwa, a mesotrophic lake in Japan. … Furthermore, we conducted incubation experiments to measure microbial oxidation rates and alterations in the isotopic signatures of methane. …

Limnology and Oceanography 65(12), 2937-2952, 2020-12

IR
20

Methane fermentation of food waste : Economic and environmental evaluation of a small-scale methane fermentation system for food factories [in Japanese]

太田良和弘 , 室伏敬太 , 鈴木光彰 , 宮原鐘一 , 松村英功 , 望月光明

静岡県工業技術研究所研究報告 = Reports of the Industrial Research Institute of Shizuoka Prefecture (13), 15-20, 2020-11

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