维普中文期刊产品整合服务
34篇 您的检索式:作者名="Koyo"
    题名 作者 年代 出处 被引量
1Characteristics of gas evolution profiles during coal pyrolysis and its relation with the variation of functional groups显示文摘Strict relation between the substituents or functional groups attached to the coal macromolecules and the generation of the volatile products, e.g., CH4 H2O, CO, CO2, etc., during the coal pyrolysis is an important but confusing subject. In this paper, quadrupole mass spectronletry, gas chromatography, and ^l3C nuclear magnetic resonance are applied to real-time monitoring the formations of volatile products, off-line quantitative determination of the total products from the pyrolysis of a sub-bituminous coal (SC), and the changes of diverse substitents in the SC along with coke foamation, respectively. These measurements are also performed for the pyrolysis of a caking coal to contrast SC. The qualitative and quantitative data reveal that, during coal pyrolysis, the functional groups related with the formation of CO, i.e., ether, carbonyl, and anhydride, can directly gen erate CO via bond breaking, or take a detour of the formation of other intermediates via condensation and recombination firstly. Moreover, the formations of CO2 and CH4 are related to the direct removal of -COO- and -CH3,respectively.Lu Zhang Shichao Qi Norihiro Takeda Shinji Kudo Junichiro Hayashi Koyo Norinaga 2018International Journal of Coal Science & Technology2018,5,4:7
2Laparoscopic-extracorporeal surgery performed with a fixation device for adnexal masses complicating pregnancy: Report of two cases显示文摘The potential complications associated with an adnexal mass discovered during early pregnancy call for surgical treatment. Ideally, surgery is performed after gestational week 12, but uterine expansion after the first trimester makes surgery difficult. We report two pregnancies complicated by adnexal masses for which we used an organ fixation device for safe performance of single-site umbilical laparoscopic surgery. Pelvic magnetic resonance imaging depicted a dichorionic, diamniotic twin pregnancy and 60-mm right adnexal mass in the first patient and bilateral adnexae in the second. All three masses were suspected mature cystic teratomas. Both patients underwent laparoscopic surgery during gestational week 14. With use of an organ fixation device, traction was applied until the mass reached the umbilicus; tumor resection was performed extracorporeally. In the second patient, the second mass was simply aspirated because adhesions were encountered. Our single-site laparoscopicextracorporeal technique proved to be a safe approach to an otherwise high-risk situation.Hanako Kasahara Iwaho Kikuchi Aya Otsuka Yoko Tsuzuki Michio Nojima Koyo Yoshida 2017World Journal of Methodology2017,7,4:3
3Different Effects of Absorption Promoters on Corneal and Conjunctival Penetration of Ophthalmic Beta-Blockers显示文摘Hitoshi Sasaki Yoshiaki Igarashi Toshiaki Nagano Koyo Nishida Junzo Nakamura 1995Pharmaceutical Research1995,,8:2
4Catalytic effects of Na and Ca from inexpensive materials on in-situ steam gasification of char from rapid pyrolysis of low rank coal in a drop-tube reactor显示文摘Li-xin Zhang Shinji Kudo Naoto Tsubouchi Jun-ichiro Hayashi Yasuo Ohtsuka Koyo Norinaga 2013Fuel Processing Technology2013,,:2
5Cyanobacterial blooms and the presence of cyanotoxins in small high altitude tropical headwater reservoirs in Kenya显示文摘Mwaura F Koyo A Zech B 2003J Water Health2003,2,:1
6Application of an existing detailed chemical kinetic model to a practical system of hot coke oven gas reforming by noncatalytlc partial oxidation 显示文摘Koyo Norinaga Hiroshi Yatabe Masahiro Matsuoka and Jun-ichiro Hayashi 2010Ind Eng Chem Res2010,49,10:1
7Using cluster analysis to uncover L2 learner differences in strategy use, will to learn, and achievement over time显示文摘Koyo Yamamori Takamichi Isoda Tomohito Hiromori Rebecca L. Oxford 2003IRAL - International Review of Applied Linguistics in Language Teaching2003,,4:1
8Molecular size and weightof asphaltene and asphaltene solubility fractions from coals,crudeoils and bitumen显示文摘Badre S Cristiane C G Koyo N 2006Fuel2006,85,1:1
9Electric Power Steering System Series 显示文摘Koyo 2002Koyo En- gineering Journal English Edition2002,,160:1
10Kinetics of surface reactions of in carbon deposition from light hydrocarbons 显示文摘KOYO NORINAGA K J HUTTINGER 2003Carbon2003,41,8:1
11Role of dissolved organic matter in translocation of nutrient cations from organic layer materials in coniferous and broad leaf forests显示文摘KEI N KOYO Y 1999Soil Science and Plant Nutrition1999,45,2:1
12Studies on sustainable land use and soil ecosystems in tropical peat land显示文摘Koyo Yonebayashi 2006Tropics2006,15,3:1
13Molecular size and weight of asphaltene and asphaltene solubility fractions from coals,crude oils and bitumen显示文摘Sophie B Cristiane C G Koyo N 2006Fuel2006,85,1:1
14Effect of SiO_(2)on loss of catalysis of inherent metallic species in CO_(2)gasification of coke from lignite显示文摘Inherent metallic species retained by coal char or coke,such as Na and Ca,behave as catalysts in gasification.The char/coke normally contains inherent SiO_(2),which can react with the inherent catalysts to form silicates,resulting in catalyst deactivation over the range of pyrolysis,carbonization and gasification,and thereby reducing the char/coke reactivity.The present authors simulated the inherent catalyst deactivation experimentally by blending a Victorian lignite with SiO_(2),briquetting the SiO_(2)/lignite blend,carbonizing the briquette,and then gasifying the coke with CO_(2).The kinetic analysis of the gasification employed a comprehensive model,which assumed progress in parallel of non-catalytic and catalytic gasification.The model quantitatively described the measured kinetics of the coke gasification with different SiO_(2)contents over a range of coke conversion up to 99.9%.The kinetic analysis revealed that the SiO_(2)deactivated substantial and entire portions of the most active catalyst and its precursor,respectively,before the gasification(i.e.,during the carbonization).The catalyst deactivation also occurred during the gasification,but mainly following a self-deactivation mechanism that involved no silicates formation.Cheolyong Choi U.P.M.Ashik Shinji Kudo Kazuya Uebo Koyo Norinaga Jun-ichiro Hayashi 2019Carbon Resources Conversion2019,2,1:1
15Cyanobacterial blooms and the presence of cyanotoxins in small high altitude tropical headwater reservoirs in Kenya显示文摘MWAURA F KOYO A O ZECH B 2004J Water Health2004,2,1:1
16Continuous monitoring of char surface activity toward benzene显示文摘Kinetics of thermal decomposition of benzene on lignite-derived char was investigated at 900℃ by applying a new method to continuously monitor the char surface activity.Benzene vapor was continuously forced to pass through a micro fixed bed of char with residence time as short as 7.6 ms,and then detected continuously by a flame-ionization detector.Results showed the presence of two different types of char surfaces;consumptive Type I surface and non-consumptive(sustainable)Type II surface.Type I surface of a partially CO_(2)-gasified char had an capacity of carbon deposit from benzene over 20 wt%-char and an initial activity(represented by a first-order rate constant)as high as 160 s−1.Both of them decreased with increasing carbon deposit due to consumption of micropores accessible to benzene,and finally became zero leaving Type II surface that had a very stable activity with rate constant of 4 s−1.The chars without gasification had capacities of Type I surfaces smaller by two orders of magnitude than the partially gasified char,while the Type II surfaces had activities similar to that of the partially gasified char.It was found that Type II surface converted benzene into not only carbon deposit but also diaromatics and even greater aromatics.Composition of the greater aromatics was unknown because they were deposited onto the reactor wall immediately after passing through the char bed.Cheolyong Choi Kentaro Shima Shinji Kudo Koyo Norinaga Xiangpeng Gao Jun-ichiro Hayashi 2019Carbon Resources Conversion2019,2,1:1
17Size and shape of a coal asphaltene studied by viscosity and diffusion coefficient measurements显示文摘Verina J Wargadalam Koyo N 2002Fuel2002,81,1112:1
18Evaluation of a web-based graduate continuing nursing education progTam in Japan: A randomized controlled trial显示文摘Horiuchi S Yaju Y Koyo M 2009Nurs Educ Today2009,29,2:1
19Modeling and simulation of materials synthesis: Chemical vapor deposition and infiltration of pyrolytic carbon显示文摘Aijun Li Koyo Norinaga Weigang Zhang Olaf Deutschmann 2007Composites Science and Technology2007,,5:1
20Pulmonary epithelioid hemangioendothelioma显示文摘Yoshimasa M Hisashi I Koyo S 2011General thoracic and cardiovascular surgery2011,59,4:1
返回顶部 每页显示:
共2页 首页 上一页 第1页 下一页 末页 /2 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费