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Acta Oceanologica Sinica 2003年第1期22卷 111-122页

作者：曲宪成 Massaki Nagae Sinji Adachi kohei Yamauchi Fisheries College Shanghai Fisheries University334 Jungong RoadShanghai 200090China Faculty of Environmental Studies Course of Environmental Conservation and PlanningNagasaki University1-14 Bunkyo-machiNagasaki 852-8521Japan Department of Biology Faculty of FisheriesHokkaido University3-1-1 Minato-choHakodate 041-0821Japan

In order to evaluate the involvement of the thyroid gland in reproduction, thyroid functioning was described in female cultivated Japanese eel (Anguilla japonica) in progressive stages of sexual maturation induced by chum salmon pituitary homogenate (SPH) treatment. Serum thyroid hormones, thyroxine (T4) and triiodothyronine (T3) were also measured in each stage. Thyroid gland activity (epithelial cell height) was high before SPH injection (previtellogenic stage), further increasing at the early vitellogenic stage, thereafter decreasing to late vitellogenic and migratory nucleus stages. The profiles of both T3 and T4 changed during vitellogenesis, being high during previtellogenic and early vitellogenic stages, and subsequently declining, thus mimicking thyroid gland activity. These results suggest that the thyroid has relation with eel ovarian development during artificial maturation.

关键词： Thyroid activity thyroxine (T4) triiodothyronine (T3) Japanese eel artificial maturation

Rebalancing China's Economic Growth:Some Insights from Japan's Experience

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China & World Economy 2012年第1期20卷 62-82页

作者： Tomoyuki Fukumoto Ichiro muto Associate Director-General International DepartmentBank of JapanTokyoJapan. Director Research and Statistics DepartmentBank of JapanTokyoJapan.

One of the greatest challenges China faces is reshaping its heavily investment-driven mode of economic growth. By investigating how the rebalancing of Japan＇s economic growth mode was realized in the 1970s, we indicate that it is essential in rebalancing to correct the distortions in factor cost （labor cost and capital cost） in a harmonious way. In addition, we refer to Japan＇s experience to indicate that rebalancing of domestic growth does not necessarily lead to external rebalancing.

关键词： China current account imbalance factor cost distortion Japan rebalancing

Robust topology optimization of multi-material lattice structures under material and load uncertainties

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Frontiers of Mechanical Engineering 2019年第2期14卷 141-152页

作者： Yu-Chin CHAN kohei SHINTANI Wei CHEN Department of Mechanical Engineering Northwestern UniversityEvanstonIL 60208USA

Enabled by advancements in multi-material additive manufacturing,lightweight lattice structures consisting of networks of periodic unit cells have gained popularity due to their extraordinary performance and wide array of *** work proposes a density-based robust topology optimization method for meso-or macroscale multi-material lattice structures under any combination of material and load *** method utilizes a new generalized material interpolation scheme for an arbitrary number of materials,and employs univariate dimension reduction and Gauss-type quadrature to quantify and propagate *** formulating the objective function as a weighted sum of the mean and standard deviation of compliance,the tradeoff between optimality and robustness can be studied and *** of a cantilever beam lattice structure under various material and load uncertainty cases exhibit the efficiency and flexibility of the *** accuracy of univariate dimension reduction is validated by comparing the results to the Monte Carlo approach.

关键词： robust topology optimization lattice structures multi-material material uncertainty load uncertainty univariate dimension reduction

基准面周期性升降过程中大陆架的生长及其对河流侵蚀性的影响——二维水槽实验模拟

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基准面周期性升降过程中大陆架的生长及其对河流侵蚀性的影响——...

Flow and geochemical modeling of drainage from Tomitaka mine,Miyazaki,Japan

第十七届全国古地理学及沉积学学术会议

作者：王俊辉 Tetsuji muto 鲜本忠中国石油大学(北京)地球科学学院长崎大学环境科学部

在基准面升降过程中,河流-三角洲沉积体系的进积与退积同时伴随着大陆架的萎缩与扩张,这是沉积地层叠置的基本过程。近年的研究表明,在基准面下降过程中,基准面的形态决定了河流的侵蚀性:随着大陆架坡度变缓,河流侵蚀性变弱直至消失。... 详细信息

在基准面升降过程中,河流-三角洲沉积体系的进积与退积同时伴随着大陆架的萎缩与扩张,这是沉积地层叠置的基本过程。近年的研究表明,在基准面下降过程中,基准面的形态决定了河流的侵蚀性:随着大陆架坡度变缓,河流侵蚀性变弱直至消失。本文通过二维水槽实验,模拟了基准面连续升降过程中大陆架剖面的演化及其对河流侵蚀性的影响。共设计9组实验,每组实验中,基准面上升和下降的速率、周期均保持不变,即基准面呈对称式地周期性升降。每组实验采用不同的升降速率或周期。各组实验均表明,在早期,基准面上升所形成的大陆架整体较陡,在随后的基准面下降过程中河流侵蚀性强。在晚期,基准面上升所形成的大陆架整体较缓,其形态逐渐逼近曾经的河流剖面,随后的基准面下降不再导致河流侵蚀下切,河流表现为持续加积。在中间某个周期中,基准面下降会实现河流既不侵蚀也不加积的临界状态(河流平衡)。在基准面持续呈对称式地周期性升降过程中,河流经历特定的周期后,从早期的具侵蚀性向晚期无侵蚀性的演化是必然的。这种转换发生的周期数取决于基准面升降的幅度、基准面升降的速率、沉积物供给速率:基准面升降幅度越小、速率越慢、沉积物供给越充足,转换越早发生。此外,如果考虑持续的构造沉降,使得基准面周期性升降的同时呈整体上升趋势,将不利于转换作用的发生。上述过程对于解释自然界中地层的叠置样式提供了一定的参考意义。

关键词：大陆架地层叠置河流基准面水槽实验自成因

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Journal of Environmental Sciences 2015年第10期27卷 130-143页

作者： kohei Yamaguchi Shingo Tomiyama Hideya Metugi Hiroyuki Ii Akira Ueda Mitsubishi Materials Corporation 1-297 KitabukuroOmiyaSaitama 330-0835Japan Mitsubishi Materials Techno Corporation 1-14-16 KudankitaChiyoda-kuTokyo 102-8205Japan Faculty of Systems Engineering Wakayama University Japan Oil Gas and Metals National Corporation Graduate School Division of Science and Engineering University of Toyama

The chemistry and flow of water in the abandoned Tomitaka mine of Miyazaki, western Japan were investigated. This mine is located in a non-ferrous metal deposit and acid mine drainage issues from it. The study was undertaken to estimate the quantities of mine drainage that needs to be treated in order to avoid acidification of local rivers, taking into account seasonal variations in rainfall. Numerical models aimed to reproduce observed water levels and fluxes and chemical variations of groundwater and mine drainage. Rock–water interactions that may explain the observed variations in water chemistry are proposed. The results show that：（1） rain water infiltrates into the deeper bedrock through a highly permeable zone formed largely by stopes that are partially filled with spoil from excavations（ore minerals and host rocks）;（2） the water becomes acidic（p H from 3 to 4） as dissolved oxygen oxidizes pyrite;（3） along the flow path through the rocks, the redox potential of the water becomes reducing, such that pyrite becomes stable and p H of the mine drainage becomes neutral; and（4） upon leaving the mine, the drainage becomes acidic again due to oxidation of pyrite in the rocks. The present numerical model with considering of the geochemical characteristics can simulate the main variations in groundwater flow and water levels in and around the Tomitaka mine, and apply to the future treatment of the mine drainage.

关键词： Mine drainage Hydrogen isotope Oxygen isotope Rock–water interaction Water movement

Fabrication of Co2Fe（Al,Si） and Co2Fe（Al,Si）/MgO on Ge（111） Substrate and Its Magnetic Properties

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Journal of Electronic Science and Technology 2019年第2期17卷 109-115页

作者： kohei Kataoka Nobuki Tezuka Masashi Matsuura Satoshi Sugimoto Graduate School of Engineering Tohoku University

We investigated the interfacial effects on magnetic properties in Co2Fe(Al,Si)/Ge (CFAS/Ge) and CFAS/MgO/Ge systems to demonstrate the effects of the interface structure on magnetic properties. CFAS and CFAS/MgO were deposited on the i-Ge(111) substrate. In-situ reflection high energy electron diffraction (RHEED) patterns showed epitaxially grown CFAS and MgO on Ge(111). According to the X-ray diffraction (XRD)φ-scan of CFAS(220), we determined that the crystallographic orientation relationships were CFAS(111)//Ge(111) and CFAS(111)//MgO(111) Ge(111). The magnetic properties were measured by the vibrating sample magnetometer (VSM) and the saturation magnetization Ms value of CFAS with 2-nm thick MgO reached the value of L21 ordered one. A uniaxial magnetic anisotropy behavior was observed both in CFAS/Ge and CFAS/MgO/Ge structures after annealing. We confirmed the behavior did not only originate from the CFAS/Ge interface but also CFAS/MgO and the ordering structure.

关键词： Co2Fe(Al,Si) full-heusler alloy magnetic anisotropy

Is rectal cancer prone to metastasize to lymph nodes than colon cancer?

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World Journal of Gastroenterology 2011年第29期17卷 3465-3466页

作者： Takashi Akiyoshi Toshiaki Watanabe Masashi Ueno Tetsuichiro muto Gastroenterological Center Department of Gastroenterological SurgeryCancer Institute HospitalJapanese Foundation for Cancer ResearchTokyo 135-8550Japan Department of Surgery Teikyo University School of MedicineTokyo 173-8605Japan

The biology of colorectal cancer differs according to its location within the large intestine.A report published in a previous issue of World Journal of Gastroenterology (November 2010) evaluated the importance of tumor location as a risk factor for lymph node metastasis in colorectal cancer,and showed that rectal cancer is prone to metastasize to lymph nodes as compared with colon ***,in order to conclude that the tumor location is independently associated with the occurrence of lymph node metastasis,it is necessary to consider a selection bias or other patientand tumorrelated factors carefully.

关键词：淋巴结结肠癌直肠癌生物学特性大肠癌胃肠病学危险因素位置

Clinical impact of portal vein pulsatility on the prognosis of hospitalized patients with acute heart failure

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World Journal of Cardiology 2023年第11期15卷 599-608页

作者： Naoya Kuwahara Tomoyuki Honjo Naohiko Sone Junichi Imanishi Kazuhiko Nakayama kohei Kamemura Masanori Iwahashi Soichiro Ohta Kenji Kaihotsu Department of Cardiology Shinko HospitalKobe 651-0072Japan

BACKGROUND Heart failure(HF)causes extracardiac organ congestion,including in the hepatic portal *** venous congestion is essential for HF treatment,but evaluating venous congestion is sometimes difficult in patients with chronic *** portal vein(PV)flow pattern can be influenced by right atrial *** images of the PV are quite easy to obtain and are reproducible among ***,the association between PV pulsatility and the condition of HF remains *** hypothesize that PV pulsatility at discharge reflects the condition of *** To evaluate the usefulness of PV pulsatility as a prognostic marker for hospit-alized patients with acute *** This observational study was conducted from April 2016 to January 2017 and April 2018 to April 2019 at Shinko *** enrolled 56 patients with acute HF,and 17 patients without HF served as *** flow velocity was mea-sured by ultrasonography on admission and at *** calculated the PV pulsatility ratio(PVPR)as the ratio of the difference between the peak and minimum velocity to the peak *** primary endpoint was cardiac death and HF *** observation period was 1 year from the first *** Kaplan-Meier method was used to determine the stratified composite event-free rates,and the log-rank test was used for comparisons between *** On admission,the PVPR was significantly higher in patients with acute HF than controls(HF:0.29±0.20 vs controls:0.08±0.07,P0.21).The Kaplan-Meier analysis s

关键词： Heart failure Venous congestion Atrial pressure Ultrasonography Portal vein Prognosis

High Speed SRM Using Vector Control for Electric Vehicle

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CES Transactions on Electrical Machines and Systems 2020年第1期4卷 61-68页

作者： kohei Aiso Kan Akatsu Department of electrical engineering and bio science school of advanced science and engineeringWaseda UniversityTokyoJapan Yokohama National University

The high speed motor is effective to realize downsizing motor in an electric vehicle(EV).Switched Reluctance Motor(SRM)is possible to the high speed drive because the rotor structure has simple and ***,the vibration and the acoustic noise are large from the drive ***,the conventional complicated current excitation results in the difficulty of the torque controller *** overcome these problems,the vector control has been proposed for SRM ***,the vector control has not been applied to the SRM in the high speed *** this paper,the drive conditions such as switching frequency,bus voltage for driving the SRM in the high speed region are *** is shown that the proposed SRM can be driven by the vector control in the high speed region and can realize low vibration.

关键词： Switched reluctance motor Vector control high speed drive.

Cases of pediatric intra-abdominal solid organ injury induced by blunt trauma experienced over a 15-year period at two centers in Japan

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World Journal of Pediatric Surgery 2023年第3期6卷 168-174页

作者： Mayu Matsui Koshiro Sugita Takafumi Kawano Nanako Nishida Ayaka Nagano Masakazu Murakami Keisuke Yano Toshio Harumatsu Shun Onishi Koji Yamada Waka Yamada Mitsuru muto Tatsuru Kaji Satoshi Ieiri Department of Pediatric Surgery Kagoshima City HospitalKagoshimaJapan Department of Pediatric Surgery Research Field in Medical and Health SciencesMedical and Dental AreaResearch and Education AssemblyKagoshima UniversityKagoshimaJapan Department of Pediatric Surgery Kurume University School of MedicineKurumeJapan

Objective The present study attempts to clarify the clinical features of pediatric intra-abdominal solid organ injury at two *** The injured organ,patient age,sex,injury grade,imaging findings,intervention,length of hospital stay,and complications were retrospectively reviewed using medical records at two centers from 2007 to *** There were 25 cases of liver injury,9 of splenic injury,8 of pancreatic injury,and 5 of renal *** mean age of all patients was 8.6±3.8 years old,with no difference between organ injury *** intervention was performed in four cases of liver injury(16.0%)and one case of splenic injury(11.1%),and surgery was performed in two cases of liver injury(8.0%)and three cases of pancreatic injury(37.5%).All other cases were treated *** included adhesive ileus in one case of liver injury(4.0%),splenic atrophy in one case of splenic injury(11.1%),pseudocysts in three cases of pancreatic injury(37.5%),atrophy of the pancreatic parenchyma in one case of pancreatic injury(12.5%),and urinoma in one case of renal injury(20.0%).No mortalities were *** Pediatric patients with blunt trauma had favorable outcomes at two pediatric trauma centers covering a broad medical area,including remote islands.

关键词： pediatric trauma injury