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How Participatory is Participatory Flood Risk Mapping? Voices from the Flood Prone Dharavi Slum in Mumbai

International Journal of Disaster Risk Science 2022年第2期13卷 230-248页

作者： Subhajyoti Samaddar Ha Si Xinyu Jiang Junho Choi hirokazu Tatano Disaster Prevention Research Institute Kyoto UniversityKyoto 6110011Japan School of Management Wuhan University of TechnologyWuhan 430070China Disaster and Safety Management Soongsil UniversitySeoul 06978South Korea

Participatory flood risk mapping(PFRM) is a well-recognized and widely implemented tool for meaningful community involvement in disaster risk reduction(DRR). The effectiveness of PFRM remains anecdotal. The PFRM exercise has rarely been applied identically in two different places by two different organizations, which produces varied and uncertain outcomes. In the absence of any agreed and comprehensive framework for participatory DRR, existing studies struggle to provide a scientific account of how the structure, design, and process of PFRM ensure the effective participation of local *** study, examines what factors and methods make PFRM an effective participatory DRR tool. In this study,we first identified the process-based criteria of participation. Then we briefly introduced a participatory flood risk mapping exercise conducted in a flood-prone informal settlement in Dharavi, Mumbai. The exercise was carefully designed to meet the process criteria of effective participation. Finally, using qualitative research methods, we evaluated the effectiveness of our PFRM from the local community perspective. The findings show that ensuring community livelihood security and true involvement of marginalized groups, preparing an action plan, and incorporating fun and cultural connotations into the facilitation process are critical components that enhance community participation through PFRM in DRR.

关键词： Dharavi Evaluation Mumbai flood Participatory disaster risk reduction Participatory flood risk mapping Process-based criteria of participation

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Disturbed passage of jejunal limb near esophageal hiatus after overlapped esophagojejunostomy following laparoscopic total gastrectomy

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World Journal of Gastrointestinal Surgery 2022年第11期14卷 1285-1296页

作者： hirokazu Noshiro Keiichiro Okuyama Yukie Yoda Department of Surgery Saga University Faculty of MedicineSaga 849-8501Japan Department of Surgery Saga UniversitySaga 849-8501Japan

BACKGROUND Overlapped esophagojejunostomy(OEJ) is a secure purely laparoscopic reconstruction after laparoscopic total gastrectomy(LTG). However, long-term surgical results have not been documented *** In this paper, we report unusual patients who manifested jejunal limb stricture near the esophageal hiatus without anastomotic stenosis during long-term observation after *** From April 2009 until May 2020, we retrospectively reviewed 211 patients underwent LTG following by OEJ for gastric carcinoma and took a standard surveillance program. We aimed to characterize a novel complicated disorder observed in these patients to assist treatment and *** Five patients(2.4%) had unusual jejunal limb stricture after LTG and OEJ,occurring at a mean of 10 mo after initial radical LTG. All five patients had disturbed oral intake and marked weight loss, and two had aspiration *** diagnostic modalities and intraoperative findings in each patient revealed an intact anastomosis, bent or tortuous jejunal limb resulting from loose fibrous adhesions on the left crus at the esophageal hiatus and no cancer recurrence. All five patients were successfully treated by reoperation for adhesiolysis, division of the left crus and rearrangement of the jejunal *** Disturbed passage through the jejunal limb near the hiatus can occur after some types of OEJ following LTG. We speculate that it may result from a short remnant esophagus, excessive mobilization of the jejunal limb that permits bending or tortuosity and adhesions on the left crus at the hiatus. Prevention for this complication is possible during the original LTG procedure.

关键词： Laparoscopic total gastrectomy Overlapped esophagojejunostomy Anastomotic stenosis Adhesiolysis Gastric carcinoma

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Increased utilization and mass activity of PtRu on reduced graphene oxide by heat treatment of its aerogel followed by composite with nanomaterials

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Carbon Resources Conversion 2023年第3期6卷 205-214页

作者： Kenta Dejima hirokazu Ishitobi He Gao Mai Saito Nobuyoshi Nakagawa Graduate School of Science and Technology Gunma University1-5-1Tenjin-choKiryuGunma 376-8515Japan Division of Environmental Engineering Science Gunma University1-5-1Tenjin-choKiryuGunma 376-8515Japan Faculty of Science and Technology Gunma University1-5-1Tenjin-choKiryuGunma 376-8515Japan

The method to increase PtRu utilization and its catalytic activity of PtRu nanoparticles supported on reduced graphene oxide(RGO)by avoiding its restacking was proposed with the aim of developing an active catalyst for a direct methanol fuel *** heat treatment at 200◦C of the GO aerogel(GOA)prepared by freeze drying of GO ice was introduced to weaken the attractive force of the hydrogen bonding between the GO sheets followed by the composite with the nanoparticles,i.e.,ketjenblack(KB),TiO_(2)and Ti_(4)O_(7),at different weight *** catalyst supported on the heat-treated GOA(RGOA),PtRu/RGOA,improved the PtRu utilization to some extent and also increased the ECSA and mass activity compared to that of PtRu/*** had fewer oxygen functional groups,especially the epoxy *** to the treatment and composite,the PtRu utilization was increased from 66.5%for PtRu/RGO to 128.6%for PtRu/RGOA+Ti_(4)O_(7)(4:1)and the mass activity was improved from 50.7 A/g-PtRu for PtRu/RGO to 130.5 A/g-PtRu for PtRu/RGOA+Ti_(4)O_(7)(1:1).The Ti_(4)O_(7)nanoparticles showed the best catalytic performance for the composite suggesting that the strong interaction between Ti_(4)O_(7)and the Pt nanoparticles was effective due to its high electronic conductivity.

关键词： Reduced graphene oxide Restacking Catalyst utilization Mass activity Composite catalyst Methanol oxidation Ti4O7

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Development of conversion therapy for advanced hepatocellular carcinoma

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Hepatobiliary Surgery and Nutrition 2023年第3期12卷 453-456页

作者： Ryota Matsuki Masaharu Kogure Nobuhiro Hasui hirokazu Momose Yutaka Suzuki Yoshihiro Sakamoto Department of Hepato-Biliary-Pancreatic Surgery Kyorin University HospitalShinkawaMitaka CityTokyoJapan

Although the number of hepatocellular carcinoma(HCC)patients is decreasing due to the development of hepatic anti-virus therapy,it remains a leading cause of cancer-related death *** recent development of systemic or locoregional therapy for advanced or unresectable HCC has enabled advanced HCC to be downstaged,and reports of conversion therapy have increased;however,many clinical and scientific subjects rely on the therapeutic strategies of advanced *** is a need to assess the evidence and develop clinical guidelines for conversion therapy for HCC;therefore,the Chinese Expert Consensus on Conversion Therapy for Hepatocellular Carcinoma(2021 Edition),consisting of 16 statements,has been developed for clinical practice(1).This consensus addresses treatment strategies for both technically and oncologically unresectable *** applaud Chinese establishment of this comprehensive and cutting-edge consensus on the treatment of advanced HCC.

关键词： Hepatocellular carcinoma(HCC) conversion therapy Chinese expert consensus

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Estimating freight production/attraction using nighttime satellite imagery

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Communications in Transportation Research 2022年第1期2卷 167-180页

作者： Tomoya Kawasaki Wataru Nakanishi Satoshi Hyodo Yusaku Namba hirokazu Mori Hirotoshi Kishi Department of Systems Innovation The University of TokyoTokyo113-8656Japan Institute of Science and Engineering Kanazawa UniversityIshikawa920-1192Japan Department of Transportation Systems Engineering Nihon UniversityChiba274-8501Japan Nomura Research Institute Tokyo100-0004Japan

An appropriate understanding and accurate estimation of zonal freight production(FP)and attraction(FA)volume is one of the most important topics and the initial step in developing the origin and destination(OD)*** general,zonal FP and FA are difficult to be obtained as observed data,particularly in developing countries,owing to the lack of large-scale freight ***,several proxy indicators are often used for estimating FP and FA,such as the gross regional product(GRP),population,and the number of ***,these indicators do not often estimate the zonal FP and FA accurately and are even not available *** nighttime light intensity(NLI)data that is human-induced light emission data and one of the open alternative data,possibly improves the accuracy of FP and FA ***,few studies have examined the relationship between NLI and FP/***,the objectives of this study are to examine whether NLI can be a significant indicator for estimating zonal FP and FA relative to other socio-economic indicators and to examine the types of NLIs that can accurately estimate the FP and FA through a case study in *** a result of the analysis,NLI data are identified as a significant variable for the estimation of FP and FA among various socio-economic *** some of the indicators related to secondary industries provide higher accuracy,NLI exhibits better estimates than the popular indicators such as GRP and *** addition,we propose three types of total NLI that multiply the unit NLI by the zonal area and this generates higher accuracy of unit NLI,the average light intensity of all pixels in a *** have also found that the use of habitable area for the estimation of total NLI provides the highest accuracy among the four types of NLIs including unit *** the analysis,NLI data is sufficiently applicable for estimating zonal FP and FA,relative to other important socio-economic indicators,although space tr

关键词： Nighttime light intensity Freight production and attraction Land cover data Elastic net Regression analysis

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Duodenal-type follicular lymphoma more than 10 years after treatment intervention:A retrospective single-center analysis

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World Journal of Gastrointestinal Oncology 2022年第8期14卷 1552-1561页

作者： Makoto Saito Akio Mori Shihori Tsukamoto Takashi Ishio Emi Yokoyama Koh Izumiyama Masanobu Morioka Takeshi Kondo hirokazu Sugino Blood Disorders Center Aiiku HospitalSapporo 064-0804Japan Department of Cancer Pathology Hokkaido UniversityFaculty of MedicineSapporo 060-8638Japan

BACKGROUND Duodenal-type follicular lymphoma(D-FL)has been recognized as a rare entity that accounts for approximately 4%of primary gastrointestinal lymphomas.D-FL follows an indolent clinical course compared with common nodal FL and is generally considered to have a better ***,the“watch and wait”approach is frequently adopted as the treatment ***,there is an option to actively intervene in ***,the long-term outcomes of such cases are poorly *** To clarify the clinical outcomes after long-term follow-up in cases of D-FL with treatment *** We retrospectively analyzed patients who met the following criteria:the lesion was confirmed by endoscopy,the diagnosis of D-FL was confirmed histopathologically,and the patient was followed-up for more than 10 years after the intervention at our *** We identified 5 cases of *** patients showed a small amount of bone marrow involvement(Stage IV).Rituximab was used as a treatment for remission in all 5 *** was also used in combination with chemotherapy in 2 Stage IV patients as well as for maintenance *** therapy was performed in 2 cases,which was followed by complete remission(CR).Eventually,all 5 patients achieved CR and survived for more than 10 ***,3 patients experienced *** patient achieved a second CR by retreatment,and in another case,the lesion showed spontaneous *** remaining patient had systemic widespread recurrence 13 years after the first *** results suggested that the FL lesions were transformed into diffuse large B-cell *** patient died 4 years later despite receiving various *** In this study,the treatment for patients of D-FL in Stage IV was *** the future,criteria for how to treat“advanced”D-FL should be established based on additional *** study of patients with D-FL indicates that whole-body follow-up examinations shou

关键词： Duodenal-type follicular lymphoma Treatment Long-term follow-up Radiation Rituximab Chemotherapy

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Shortening of alkaline DNA unwinding time does not interfere with detecting DNA damage to mouse and human spermatozoa in the comet assay

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Asian Journal of Andrology 2011年第1期13卷 172-174页

作者： hirokazu Kusakabe Hiroyuki Tateno Department of Biological Sciences Asahikawa Medical University Asahikawa 078-8510 Japan

The comet assay was performed on mouse and human spermatozoa to examine the effect of alkaline DNA unwinding time. The spermatozoa were treated in vitrowith the DNA-damaging agents, methyl methanesulfonate （MMS） or hydrogen peroxide （Hz02）, and then embedded in agarose gel on glass sl ides. The slides were immersed in alkaline solution （〉pH 13） for 1, 5, 10 and 20 min, and then subjected to the electrophoresis under neutral conditions. In mouse spermatozoa, comet tails seen in solvent controls became brighter and longer as the alkaline DNA unwinding time increased. However, in the MMS-treated mouse spermatozoa, a smaller difference in the damage from that in the solvent control was seen with time within a dose. DNA damage induced by H2O2 could also be detected accurately after alkali treatment for 1-20 min. In human spermatozoa, DNA damage induced by MMS and H2O2 could be detected in a dose-dependent manner after alkali treatment for 1 min. The ability of the comet assay to detect DNA damage was not adversely affected by the short period （1 min） of the alkaline DNA unwinding time.

关键词： alkaline comet assay DNA unwinding human mice spermatozoa

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Deformation behaviors of magnesium alloy AZ31 sheet in cold deep drawing

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中国有色金属学会会刊：英文版 2008年第1期18卷 86-91页

作者：杨连发 MORI Ken-ichiro TSUJI hirokazu School of Electromechnical Engineering Guilin University of Electronic Technology Department of Production Systems Engineering Toyohashi University of Technology

To investigate how the popular magnesium alloy AZ31 sheet(aluminum 3%,zinc 1%)behaves in cold working,deep drawing experiments at room temperature,along with finite element(FE)simulation,were performed on the cold forming sheet of the AZ31 alloy after being annealed under various *** activities were focused on the fracture pattern,limit drawing ratio(LDR),deformation load,thickness distribution,anisotropic effect,as well as the influences of the annealing conditions and tool configuration on *** results display that punch shoulder radius instead of die clearance,has much influence on the thickness *** anisotropy is remarkable in cold working,which adversely impacts the *** fracture often happens on the side wall at an angle to axis of the deformed *** results also imply that the LDR for the material under present experimental conditions is 1.72,and annealing the material at 450 ℃ for 1 h may be preferable for the cold deep drawing.

关键词： AZ31镁合金冷压制各向异性有限元素模拟

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A method for estimating the errors in many-light rendering with supersampling

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Computational Visual Media 2019年第2期5卷 151-160页

作者： hirokazu Sakai Kosuke Nabata Shinya Yasuaki Kei Iwasaki Wakayama University WakayamaWakayama640-8510Japan Dwango CG Research KADOKAWA Hongo Bldg.5245 HongoBunkyo-kuTokyo1130033Japan

In many-light rendering, a variety of visual and illumination effects, including anti-aliasing,depth of field, volumetric scattering, and subsurface scattering, are combined to create a number of virtual point lights(VPLs). This is done in order to simplify computation of the resulting illumination. Naive approaches that sum the direct illumination from many VPLs are computationally expensive;scalable methods can be computed more efficiently by clustering VPLs, and then estimating their sum by sampling a small number of VPLs. Although significant speed-up has been achieved using scalable methods, clustering leads to uncontrollable errors, resulting in noise in the rendered images. In this paper, we propose a method to improve the estimation accuracy of manylight rendering involving such visual and illumination effects. We demonstrate that our method can improve the estimation accuracy by a factor of 2.3 over the previous method.

关键词： anti-aliasing depth of field many-light rendering participating media

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Synthesis of Sodium Beta Alumina Films by Heat Treatment of Sodium Aluminum Oxides

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Journal of Wuhan University of Technology(Materials Science) 2016年第1期31卷 6-10页

作者：池晨 hirokazu KATSUI Takashi GOTO Key Laboratory for Green Chemical Process of Ministry of Education Chemical Engineering and Pharmacy Wuhan Institute of Technology 430070 China Institute for Materials Research Tohoku University 2-1-1 Katahira Aoba-ku Sendai 980-8577 Japan

Sodium beta alumina（Na-β-alumina） films were synthesized by heat treatment of NaAl6O（9.5）and γ-NaA1O2 films at temperatures of 1 373-1 573 ***-phase γ-NaA1O2 and NaAl6O（9.5） films were prepared by laser chemical vapor deposition at the deposition temperatures of 976 and 1 100 K,*** heat treatment of the films resulted in the formation of Na-β-alumina with α-Al2O3 at temperatures above 1 373 K for NaAl6O（9.5） and 1 473 K for γ-*** heat treatment at temperatures of 1 473-1 573 K,the faceted morphology with terraces of the as-deposited（110）-oriented γ-NaAlO2 films transformed to a porous morphology with platelet grains comprising Na-β-alumina and α-*** heat treatment at temperatures of1 373-1 473 K,the pyramidal,faceted grains of as-deposited NaAl6O（9.5） films transformed to planer,shapeanisotropic morphology in the film of mixed Na-β-alumina and α-Al2O3.A dense morphology was observed in both the as-deposited and heat-treated NaAl6O（9.5） films.

关键词： sodium beta alumina heat treatment chemical vapor deposition morphology

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