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Coaxial multi-criteria optimization of a methane steam reforming reactor for effective hydrogen production and thermal management

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Energy and AI 2023年第3期13卷 182-196页

作者： Marcin Pajak Grzegorz Brus shinji Kimijima Janusz S.Szmyd AGH University of Science and Technology KrakowPoland Shibaura Institute of Technology TokyoJapan

The advancement in environmental awareness is the recent driving factor of the energy industry *** market sentiments dictate the commercialization of unconventional energy ***,generation via hydrogen conversion gains *** presented research regards the enhancement of the steam reforming reaction,used for the production of hydrogen via the conversion of *** reforming process characterizes by a strong endothermic *** rapid course of the reaction leads to the creation of temperature gradients of a considerable *** presented research strives to alleviate the negative consequences of the reaction *** original strategy by the name of macro-patterning is suggested as a *** presented research proposes an updated concept,predicting the introduction of coaxial segments to the catalytic *** segments may consist of catalytic material or metallic foam applied for local suppression of the *** morphology of specific segments may be altered independently,to allow for additional control of the reforming *** objective of the research is to define the optimal segment *** optimization process is based on an in-house procedure implementing a genetic *** acquired results appear to validate the macro-pattering concept.A significant unification of the temperature field is obtained,with a simultaneous increase in hydrogen productivity.

关键词： Hydrogen Genetic algorithm Steam reforming Design optimization

Involvement of Krüppel-like factor 6 (KLF6) mutation in the development of nonpolypoid colorectal carcinoma

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World Journal of Gastroenterology 2007年第29期13卷 3932-3938页

作者： Shinichi Mukai Toru Hiyama shinji Tanaka Masaharu Yoshihara Koji Arihiro Kazuaki Chayama Department of Medicine and Molecular Science Division of Frontier Medical Science Program for Biomedical Research Graduate School of Biomedical Sciences Hiroshima University Hiroshima Japan Health Service Center Hiroshima University Higashihiroshima Japan Department of Endoscopy Hiroshima University Hospital Hiroshima Japan Department of Anatomical Pathology Hiroshima University Hospital Hiroshima Japan

AIM： To examine Kruppel-like factor 6 （KLF6） mutations in nonpolypoid-type tumors and alterations of K-ras, p53, and B-raf in relation between mutation and morphologic type, particularly nonpolypoid-type colorectal carcinomas. METHODS： Fifty-five early nonpolypoid colorectal carcinomas were analyzed. Loss of heterozygosity （LOH） of KLF6 and p53 was determined by microsatellite assay. Mutations of KLF6, K-ras, and B-raf were examined by polymerase chain reaction-single-strand conformation polymorphism followed by direct sequencing. In LOH- positive and/or mutation-positive tumors, multiple （4-7） samples in each tumor were microdissected and examined for genetic alterations, p53 expression was evaluated by immunohistochemistry. RESULTS： LOH of KLF6 and p53 was found in 14 of 29 （48.3%） and 14 of 31 （45.2%） tumors, respectively. In tO of the 14 （71.4%） KLF6 LOH-positive tumors and 9 of the 14 （64.3%） p53 LOH-positive tumors, LOH was found in all of the microdissected samples. In 1 of the tO （10.0%） KLF6 LOH-positive tumors, a single missense mutation was identified. K-ras and B-raf mutations were found in 5 of 55 （9.1%） and 6 of 55 （10.9%） tumors, respectively. However, these mutations were detected only in subsets of microdissected tumor samples. CONCLUSION： These data suggest that KLF6 and p53 mutations are involved in the development of nonpolypoid colorectal carcinoma, whereas K-ras and B-raf mutations are not.

关键词： Nonpolypoid colorectal carcinoma KLF6 p53 K-ras B-raf

Rikkunshito increases peripheral incretin-hormone levels in humans and rats

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World Journal of Methodology 2024年第1期14卷 102-113页

作者： Hiroshi Kono shinji Furuya Hidenori Akaike Katsutoshi Shoda Yoshihiko Kawaguchi Hidetake Amemiya Hiromichi Kawaida Daisuke Ichikawa The First Department of Surgery University of YamanashiChuoYamanashi 409-3898Japan

BACKGROUND It was reported that rikkunshito(TJ-43)improved the cisplatin-induced decreases in the active form of ghrelin in plasma;however,other effects on gastrointestinal hormones have not been *** To investigate the effects of TJ-43 on peripheral levels of incretin hormones,including gastric inhibitory polypeptide(GIP)and glucagon-like polypeptide-1(GLP-1),in humans and *** Patients were divided into two groups,namely patients who received TJ-43 immediately following surgery[TJ-43(+)group]and those who received TJ-43 on postoperative day 21[TJ-43(-)group],and the plasma levels of active GIP and active GLP-1 were *** animal experiments,rats were treated with TJ-43[rat(r)TJ-43(+)group]or without[rTJ-43(−)group]by gavage for 4 wk,and the plasma active GIP and active GLP-1 levels were *** expression of incretin hormones in the gastrointestinal tract and insulin in the pancreas were investigated by ***,the cyclic adenosine monophosphate activities were assessed in pancreatic tissues from rats treated with or without TJ-43 in vivo,and the blood glucose levels and plasma insulin levels were measured in rats treated with or without TJ-43 in oral glucose tolerance *** In humans,the active incretin hormone levels increased,and values were significantly greater in the TJ-43(+)group compared those in the TJ-43(-)*** rats,the plasma active incretin levels significantly increased in the rTJ-43(+)group compared with those in the rTJ-43(-)*** and GLP-1 expressions were enhanced by TJ-43 ***,plasma insulin levels increased and blood glucose levels were blunted in the rTJ-43(+)*** The results show that TJ-43 may be beneficial for patients who undergo pancreatic surgery.

关键词： Incretin hormone Japanese traditional herbal medicine Gastric inhibitory polypeptide Glucagon-like polypeptide-1 Islet cells Insulin

Characterization of Full-WDM-Band Photodiode Modules Using Raman Amplifiers in the U Band at 40 Gb/s

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光学学报 2003年第S1期23卷 447-448页

作者： Morio Wada Toshimasa Umezawa Takahiro Kudou Takashi Mogi shinji Iio shinji Kobayashi Tsuyoshi Yakihara Akira Miura Corporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. JapanCorporate R&D Center Yokogawa Electric Co. Japan

We present the characteristics of a full-WDM-band photodiode module in 40 Gb/s U-band operation using a Raman amplifier. This module is suitable for wide-band transmission systems with the additional new channels in t... 详细信息

关键词： WDM for with Characterization of Full-WDM-Band Photodiode Modules Using Raman Amplifiers in the U Band at 40 Gb/s of in

Treatment of bleaching wastewater from pulp paper plants in China using enzymes and coagulants

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Journal of Environmental Sciences 1999年第4期11卷 480-484页

作者： ZHANG Tong shinji Wada Takao Yamagishi Ichikawa Hiroyasu Kenji Tatsumi ZHAO Qing-xiang Department of Environmental Engineering East China University of Science and TechnologyShanghai 200237China National Institute of Resources and Environment 16-3OnogawaTsukubaIbaraki 305Japan

The treatment of wastewater from pulp-paper plants in China by horseradish peroxidase was investigated in this study. The effects of horseradish peroxidase and coagulants were discussed in detail. The results indicated that enzymes might improve the removal of AOX, TOC and colour for pulp\|paper wastewater and modified chitosan is far more effective than Al\-2(SO\-4)\-3 to remove AOX, TOC and colour.

关键词： pulp\|paper wastewater coagulant horseradish peroxidase

Ultra-large-scale phase-field simulation study of ideal grain growth

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npj Computational Materials 2017年第1期3卷 247-252页

作者： Eisuke Miyoshi Tomohiro Takaki Munekazu Ohno Yasushi Shibuta shinji Sakane Takashi Shimokawabe Takayuki Aoki Graduate School of Science and Technology Kyoto Institute of TechnologyMatsugasakiSakyo-kuKyoto 606-8585Japan Faculty of Mechanical Engineering Kyoto Institute of TechnologyMatsugasakiSakyo-kuKyoto 606-8585Japan Division of Materials Science and Engineering Faculty of EngineeringHokkaido UniversityKita 13 Nishi 8Kita-kuSapporoHokkaido 060-8628Japan Department of Materials Engineering The University of Tokyo7-3-1 HongoBunkyo-kuTokyo 113-8656Japan The Supercomputing Division Information Technology CenterThe University of Tokyo2-11-16 YayoiBunkyo-kuTokyo 113-8658Japan Global Scientific Information and Computing Center Tokyo Institute of Technology2-12-1 i7-3 O-okayamaMeguro-kuTokyo 152-8550Japan

Grain growth,a competitive growth of crystal grains accompanied by curvature-driven boundary migration,is one of the most fundamental phenomena in the context of metallurgy and other scientific ***,the true picture of grain growth is still controversial,even for the simplest(or‘ideal’)*** problem can be addressed only by large-scale numerical ***,we analyze ideal grain growth via ultra-large-scale phase-field simulations on a supercomputer for elucidating the corresponding authentic statistical *** performed simulations are more than ten times larger in time and space than the ones previously considered as the largest;this computational scale gives a strong indication of the achievement of true steady-state growth with statistically sufficient number of ***,we provide a comprehensive theoretical description of ideal grain growth behaviors correctly quantified by the present *** findings provide conclusive knowledge on ideal grain growth,establishing a platform for studying more realistic growth processes.

关键词： grain field establishing

Characteristics of gas evolution profiles during coal pyrolysis and its relation with the variation of functional groups

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International Journal of Coal Science & Technology 2018年第4期5卷 452-463页

作者： Lu Zhang Shichao Qi Norihiro Takeda shinji Kudo Junichiro Hayashi Koyo Norinaga Department of Applied Science for Electronics and Materials Kyushu University6-1Kasuga KoenKasugaFukuoka 816-8580Japan Institute for Materials Chemistry and Engineering Kyushu University6-1Kasuga KoenKasugaFukuoka 816-8580Japan

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.

关键词： Light gas evolution Carbonization QMS GC ^13C NMR

Continuous monitoring of char surface activity toward benzene

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Carbon Resources Conversion 2019年第1期2卷 43-50页

作者： Cheolyong Choi Kentaro Shima shinji Kudo Koyo Norinaga Xiangpeng Gao Jun-ichiro Hayashi Interdisciplinary Graduate School of Engineering Sciences Kyushu University6-1Kasuga KoenKasuga 816-8580Japan Institute for Materials and Engineering Chemistry Kyushu University6-1Kasuga KoenKasuga 816-8580Japan Department of Materials Science and Engineering School of EngineeringNagoya UniversityNagoya 464-8601Japan Discipline of Electrical Engineering Energy and PhysicsSchool of Engineering and Information TechnologyMurdoch University90 South StreetMurdochWA 6150Australia Transdisciplinary Research and Education Center of Green Technology Kyushu University6-1Kasuga KoenKasuga 816-8580Japan

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 *** 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 *** showed the presence of two different types of char surfaces;consumptive Type I surface and non-consumptive(sustainable)Type II *** 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−*** 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−*** 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 *** was found that Type II surface converted benzene into not only carbon deposit but also diaromatics and even greater *** of the greater aromatics was unknown because they were deposited onto the reactor wall immediately after passing through the char bed.

关键词： Carbon deposition Aromatics Tar Char Kinetics Pyrolysis Gasification

Effect of ONO-4057 and tacrolimus on ischemia-reperfusion injury of the liver

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World Journal of Gastroenterology 2009年第45期15卷 5712-5715页

作者： Takayuki Takeichi shinji Uemoto Sachiko Minamiguchi Izumi Takeyoshi Yukihiro Inomata Koichi Tanaka Eiji Kobayashi Department of Transplantation and Immunology Kyoto University Hospital 54 Kawara-cho ShogoinSakyo-ku Kyoto 606-8507 Japan Second Department of Surgery Gunma University School of Medicine 3-39-15 Showa-machi Maebashi Gunma 371-8511 Japan Department of Trans-plantation and Pediatric Surgery Postgraduate School of Medical Science Kumamoto University Kumamoto 1-1-1 Honjyo Ku-mamoto 860-8556 Japan Laboratory of Anatomic Pathology Kyoto University Hospital 54 Kawara-cho Shogoin Sakyo-ku Kyoto 606-8507 Japan Division of Organ Replacement Research Center for Molecular Medicine Jichi Medical School Minami-kawachi-machi Kawachi-gun Tochigi 329-0498 Japan

AIM: To investigate the effects of a novel Leukotriene B4 receptor antagonist and/or tacrolimus on ischemia-reperfusion in a rat liver model. METHODS: Male Lewis rats were pretreated with ONO-4057 (100 mg/kg) and/or tacrolimus (1 mg/kg) orally, and divided into four experimental groups; group 1 (control), group 2 (ONO-4057), group 3 (tacrolimus), group 4 (ONO-4057 + tacrolimus). RESULTS: There was a tendency for long survival in the groups treated with tacrolimus alone and ONO-4057 plus tacrolimus. Post-reperfusion serum aspartate aminotransferase levels decreased more signif icantly in ONO-4057 plus tacrolimus group (P < 0.01), than in the tacrolimus alone group (P < 0.05), compared to controls. CONCLUSION: This study demonstrated that pretreat-ment with ONO-4057 in combination with tacrolimus produced additive effects in a rat model of liver isch-emia-reperfusion injury.

关键词： Ischemia-reperfusion injury Leukotriene B4 Uver Tacrolimus