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Review of the diagnosis and management of gastrointestinal bezoars

World Journal of Gastrointestinal Endoscopy 2015年第4期7卷 336-345页

作者： Masaya Iwamuro Hiroyuki Okada kazuhiro matsueda Tomoki Inaba Chiaki Kusumoto Atsushi Imagawa Kazuhide Yamamoto Department of Molecular Hepatology Okayama University Graduate School of Medicine Dentistry and harmaceutical Sciences Department of Endoscopy Okayama University Hospital Department of Gastroenterology Kurashiki Central Hospital Department of Gastroenterology Kagawa Prefectural Central Hospital Department of Gastroenterology Nippon Kokan Fukuyama Hospital Department of Gastroenterology Mitoyo General Hospital Department of Gastroenterology and Hepatology Okayama University Graduate School of MedicineDentistryand Pharmaceutical Sciences

The formation of a bezoar is a relatively infrequentdisorder that affects the gastrointestinal *** are mainly classified into four types dependingon the material constituting the indigestible mass of thebezoar phytobezoars, trichobezoars, pharmacobezoars,and lactobezoars. Gastric bezoars often cause ulcerativelesions in the stomach and subsequent bleeding,whereas small intestinal bezoars present with smallbowel obstruction and ileus. A number of articles haveemphasized the usefulness of Coca-Cola？ administrationfor the dissolution of phytobezoars. However, persimmonphytobezoars may be resistant to such dissolutiontreatment because of their harder consistency comparedto other types of phytobezoars. Better understanding ofthe etiology and epidemiology of each type of bezoarwill facilitate prompt diagnosis and *** we provide an overview of the prevalence, classification,predisposing factors, and manifestations ofbezoars. Diagnosis and management strategies arealso discussed, reviewing mainly our own case *** progress in basic research regarding persimmonphytobezoars is also briefly reviewed.

关键词： Bezoars Gastrointestinal endoscopy Persimmonphytobezoar Trichobezoar Endoscopic removal Gastric ulcer Ileus

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A divide & conquer approach to liveness model checking under fairness & anti-fairness assumptions

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Frontiers of Computer Science 2019年第1期13卷 51-72页

作者： kazuhiro OGATA School of Information Science Japan Advanced Institute of Science and Technology (JAIST) 1-1 AsahidaiNomiIshikawa 923-1292Japan

This paper proposes an approach to making livehess model checking problems under fairness *** proposed method divides such a problem into smaller ones that can be *** is not superior to existing tools dedicated to model checking liveness properties under fairness assumptions in terms of model checking performance but has the following positive aspects:1)the approach can be used to model check liveness properties under anti-fairness assumptions as well as fairness assumptions,2)the approach can help humans better understand the reason why they need to use fairness and/or anti-fairness assumptions,and 3)the approach makes it possible to use existing linear temporal logic model checkers to model check liveness properties under fairness and/or anti-fairness assumptions.

关键词： anti-fairness fairness liveness property Maude model checking

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Molecular Integral for the Double Electron-Repulsion Potential： A Closed Form Underived for Forty Years

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Chinese Physics Letters 2005年第12期22卷 3052-3053页

作者： kazuhiro Ishida Department of Chemistry and Frontier Research Centre for Computational Sciences Faculty of ScienceTokyo University of Science Shinjuku-ku Tokyo 162-8601 Japan

A closed form of the title integral formula over the Gaussian-type orbitals is derived for the first time. The present closed form is analytical as the multiple hyper-geometric function of five variables.

关键词： 3-BODY INTERACTION INTEGRALS MATHEMATICAL METHODS SHELL ATOMS IONS

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Positively Expansive Differentiable Maps

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Acta Mathematica Sinica,English Series 2010年第10期26卷 1839-1846页

作者： kazuhiro SAKAI Department of Mathematics Utsunomiya University

We study the space of positively expansive differentiable maps of a compact connected C ∞ Riemannian manifold without boundary. It is proved that （i） the C1-interior of the set of positively expansive differentiable maps coincides with the set of expanding maps, and （ii） Cl-generically, a differentiable map is positively expansive if and only if it is expanding.

关键词： Positively expansive maps expanding marts

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Strategies to enhance hydrogen storage performances in bulk Mg-based hydrides

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Journal of Materials Science & Technology 2023年第22期153卷 139-158页

作者： Xin F.Tan Manjin Kim kazuhiro Yasuda kazuhiro Nogita School of Mechanical and Mining Engineering The University of QueenslandSt.LuciaQLD 4072Australia Department of Applied Quantum Physics and Nuclear Engineering Kyushu UniversityFukuoka 819-0395Japan John de Laeter Centre Curtin UniversityGPO Box U1987PerthWA 6845Australia

Bulk Mg-based hydrogen storage materials have the potential to provide a low-cost solution to diversify energy storage and *** to nano powders which require handling and processing under hydrogen or an inert gas atmosphere,bulk Mg-based alloys are safer and are more oxidation *** methods and existing infrastructures can be used to process and handle these ***,bulk Mg alloys have smaller specific surface areas,resulting in slower hydrogen sorp-tion kinetics,higher equilibrium temperatures,and enthalpies of hydride *** work reviews the effects of the additions of a list of alloying elements and the use of innovative processing meth-ods,e.g.,rapid solidification and severe plastic deformation processes,to overcome these *** challenges,advantages,and weaknesses of each method and future perspectives for the development of Mg-based hydrogen storage materials are discussed.

关键词： Hydrogen storage Metal hydrides Mg alloys Mg hydrides

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Full-scale dynamic testing of response-controlled buildings and their components:concepts,methods,and findings

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Earthquake Engineering and Engineering Vibration 2014年第S1期13卷 167-181页

作者： Kazuhiko Kasai kazuhiro Matsuda Structural Engineering Research Center Tokyo Institute of Technology Director and Professor Assistant Professor

A series of shake-table tests was conducted by inserting and replacing 4 different types of dampers,or by removing them in a full-scale 5-story steel frame building. The objective is to validate response-control technologies that are increasingly adopted for major Japanese buildings without being attested to-date by a major earthquake. Test results are briefly described,and good performance of the dampers and frame demonstrated. The concepts of the full-scale building tests and various contributions are discussed. The difficulty associated with full-scale dynamic testing is explained.

关键词： response-controlled building steel frame steel damper viscous damper oil damper viscoelastic damper

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Effectiveness of nature reserves for bird conservation in urban parks in Tokyo

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Journal of Forestry Research 2021年第5期32卷 2011-2022页

作者： kazuhiro Katoh Misako Matsuba The Open University of Japan Wakaba 2-11Mihama-kuChiba City 261-8586Japan Research Institute for Global Change Japan Agency for Marine-Earth Science and TechnologyNatsushima-cho 2-15Yokosuka-CityKanagawa 237-0061Japan

In some urban parks in Tokyo,semi-natural habitat patches are maintained as nature reserves for birds,called bird *** censuses and vegetation surveys were conducted in eight urban parks in Tokyo from December 2015 to July 2016 to determine the effectiveness of bird sanctuaries on avian species *** relationship between avian species composition and environmental conditions was analyzed by partial redundancy analysis(partial RDA)using vegetation variables,number of visitors,presence or absence of reserves within the same park,area of wooded parts,and normalized difference vegetation index(NDVI)in the surrounding *** results of the partial RDA are as follows:(1)Area,lower vegetation cover,higher vegetation cover,tree species composition obtained from detrended correspondence analysis(DCA)on vegetation survey data,and NDVI in the surrounding area were considered as covariates and explained 17.4-33.6%of the total variation in bird species composition,(2)The presence or absence of sanctuary significantly explained bird species compositional variation regardless of season,indicating that the sanctuaries were beneficial for urban avoider species not only in the sanctuaries but also in the surrounding wooded area,and(3)Tree coverage within a 100 m range and leaf litter coverage also influenced avian species *** concluded that bird sanctuaries and other nature reserves can be beneficial to bird conservation,even within *** positive effect of sanctuaries could be due to the limited influence of human presence and the developed vegetation within *** reserves may play the role of core habitats within the studied urban parks.

关键词： Avian species composition Leaf litter Nature reserve Tree coverage Urban biodiversity Vegetation structure

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ASYMPTOTIC BEHAVIOR NEAR THE BOUNDARY OF A LARGE SOLUTION TO SEMILINEAR POISSON EQUATION WITH DOUBLE-POWER NONLINEARITY

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Acta Mathematica Scientia 2024年第6期44卷 2083-2098页

作者： kazuhiro TAKIMOTO Yuxiao ZHANG Department of Mathematics Graduate School of Advanced Science and TechnologyHiroshima University1-3-1 KagamiyamaHigashi-Hiroshima cityHiroshima 739-8526Japan

We deal with a large solution to the semilinear Poisson equation with doublepower nonlinearityΔ^(u)=u^(p)+αu^(q)in a bounded smooth domain D■R^(n),where p>1,-1 详细信息

We deal with a large solution to the semilinear Poisson equation with doublepower nonlinearityΔ^(u)=u^(p)+αu^(q)in a bounded smooth domain D■R^(n),where p>1,-1

关键词： large solution semilinear Poisson equation double-power nonlinearity asymptoticbehavior

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Microfluidic-based flexible reflective multicolor display

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Microsystems & Nanoengineering 2018年第1期4卷 244-254页

作者： kazuhiro Kobayashi Hiroaki Onoe School of Integrated Design Engineering Graduate School of Science and TechnologyKeio UniversityYokohamaJapan

This paper describes a microfluidic-based flexible reflective display constructed using dyed water droplets and air gaps as pixel *** display is composed of a flexible polydimethylsiloxane sheet with a connected pixel-patterned *** types of dyed water droplets and air gaps are sequentially introduced to the microchannel through a suction process to display a multicolor *** displayed image is stable and can be retained without an energy *** ensure that images are displayed correctly,the geometric parameters of the dot pixel design and minimum differential pressure necessary to drive the water droplets are *** a demonstration,we successfully display three-color dot-matrix reflective images and bitmap characters in the *** proposed method can be applied to energy-less and color-changeable displays for use in future daily-life accessories,such as bags,shoes,and clothes,and can change the surface color and pattern of these accessories.

关键词： reflective fluid sequentially

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Image-based fall detection and classification of a user with a walking support system

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Frontiers of Mechanical Engineering 2018年第3期13卷 427-441页

作者： Sajjad TAGHVAEI kazuhiro KOSUGE School of Mechanical Engineering Shiraz University Shiraz 71936- 16548 Iran Department of Bioengineering and Robotics Tohoku University Sendai 980-8579 Japan

The classification of visual human action is important in the development of systems that interact with humans. This study investigates an image-based classifica- tion of the human state while using a walking support system to improve the safety and dependability of these systems. We categorize the possible human behavior while utilizing a walker robot into eight states （i.e., sitting, standing, walking, and five falling types）, and propose two different methods, namely, normal distribution and hidden Markov models （HMMs）, to detect and recognize these states. The visual feature for the state classification is the centroid position of the upper body, which is extracted from the user＇s depth images. The first method shows that the centroid position follows a normal distribution while walking, which can be adopted to detect any non-walking state. The second method implements HMMs to detect and recognize these states. We then measure and compare the performance of both methods. The classification results are employed to control the motion of a passive-type walker （called ＂RT Walker＂） by activating its brakes in nonwalking states. Thus, the system can be used for sit/stand support and fall prevention. The experiments are performed with four subjects, including an experienced physiotherapist. Results show that the algorithm can be adapted to the new user＇s motion pattern within 40 s, with a fall detection rate of 96.25% and state classification rate of 81.0%. The proposed method can be implemented to other abnormality detection/classification applications that employ depth image-sensing devices.

关键词： fall detection walking support hidden Markov model multivariate analysis

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