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Comparison of Carbon Dynamics among Three Cool-Temperate Forests (<i>Quercus serrata, Larix kaempferi</i>and <i>Pinus densiflora</i>) under the Same Climate Conditions in Japan

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Journal of Environmental Protection 2019年第7期10卷 929-941页

作者： Mitsutoshi Tomotsune Yohei Suzuki Yuki Kato Rina Masuda Nobuhiko Suminokura Yuta Koyama Yoshiaki Sakamaki Hiroshi koizumi Faculty of Education and Integrated Arts and Science Waseda University Tokyo Japan Faculty of Science and Engineering Waseda University Tokyo Japan Waseda Research Institute for Science and Engineering Waseda University Tokyo Japan

To understand the role of forest ecosystems in the global carbon cycle, it is important to clarify the factors affecting the carbon balance of forest ecosystems. However, little is known about the direct effect of forest types, especially dominant species, on their different carbon dynamics. To clarify the effect of difference in forest types, an experiment was conducted in three forests, which were located in the same place and exposed to the same climate conditions. These forests were middle-aged (40 - 45 years) and dominated by Quercus serrata (Q forest), Larix kaempferi (L forest) and Pinus densiflora (P forest). Net primary production (NPP), heterotrophic respiration (HR) and net ecosystem production (NEP) were estimated in each forest, using a biometric method over one year. For NPP estimated from the annual growth of tree biomass (ΔB) and amount of litter (LF), P forest NPP (5.3 MgC·ha-1·yr-1) was higher than Q and L forest NPP (4.6 and 3.2 MgC·ha-1·yr-1). The difference was affected by a significant difference in ΔB (p = 0.032) and LF (p -1·yr-1) was higher than L and P forest (2.3 and 2.1 MgC·ha-1·yr-1). This difference could result from the amount of litter (respiration substrate) and chemical properties of litter (lability of decomposition). The NEP, which was calculated from the difference between NPP and HR, varied widely among the forest types (0.5, 0.9 and 3.2 MgC·ha-1·yr-1 in Q, L and P forests, respectively). The range of values among the forest types was comparable to those among age sequences and climate zones in previous studies. These results suggest that the difference in forest types (especially dominant species) can potentially lead to a large variation in carbon dynamics, in ecosystems located in the same place.

关键词： Dominant Species Functional Type Heterotrophic Respiration Net Ecosystem Production Net Primary Production

Hypothyroidism in patients with autoimmune pancreatitis

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World Journal of Gastrointestinal Pharmacology and Therapeutics 2018年第2期9卷 16-21页

作者： Ryoko Shimizuguchi Terumi Kamisawa Yuka Endo Masataka Kikuyama Sawako Kuruma Kazuro Chiba Taku Tabata Satomi koizumi Department of Internal Medicine Tokyo Metropolitan Komagome Hospital

AIM To examine thyroid function and clinical features of hypothyroidism in autoimmune pancreatitis(AIP) *** We examined thyroid function in 77 patients with type 1 AIP(50 males, 27 females; median age 68 years, range 33-85) diagnosed according to the Japanese diagnostic criteria for AIP 2011. We compared clinical and serological findings between patients with and without various categories of hypothyroidism. The change in hypothyroidism after steroid therapy was also examined. RESULTS Eight patients(10%) had hypothyroidism of 6 patients had subclinical hypothyroidism with a normal serum free thyroxine(FT4) and high thyroid stimulating hormone(TSH) level, and 2 patients had central hypothyroidism with low serum free triiodothyronine(FT3), FT4 and TSH levels. A significant goiter of the thyroid was not observed in any patient. There were no significant differences in age; male to female ratio; serum concentrations of IgG and IgG 4-related disease(IgG4-RD); presence of antithyroglobulin antibody, antinuclear antigen or rheumatoid factor; or presence of extrapancreatic lesions between the 6 patients with subclinical hypothyroidism and patients with euthyroidism. After steroid therapy, both subclinical and central hypothyroidism improved with improvement of the *** Hypothyroidism was observed in 8(10%) of 77 AIP patients and was subclinical in 6 patients and central in 2 patients. Further studies are necessary to clarify whether this subclinical hypothyroidism is another manifestation of IgG4-RD.

关键词： Autoimmune pancreatitis Hypothyroidism IgG4-related disease

Foreign body granulomas mimic peritoneal dissemination caused by incarcerated femoral hernia perforation:A case report

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World Journal of Clinical Oncology 2021年第11期12卷 1083-1088页

作者： Shinpei Ogino Tatsuya Matsumoto Yosuke Kamada Noriaki koizumi Hiroshi Fujiki Kenji Nakamura Takeshi Yamano Chouhei Sakakura Department of Surgery Akashi City HospitalAkashi 673-8501HyogoJapan Department of Pathology Akashi City HospitalAkashi 673-8501HyogoJapan

BACKGROUND Foreign body granuloma(FBG)is a well-known type of granulomatous formation,and intraabdominal FBG(IFBG)is primarily caused by surgical *** IFBGs caused by gastrointestinal perforation is an extremely rare and interesting clinicopathological condition that resembles peritoneal ***,we present a case of IFBGs mimicking peritoneal dissemination caused by bowel perforation and describe the value of intraoperative pathological examinations for rapid IFBG *** SUMMARY An 86-year-old woman with an incarcerated femoral hernia was admitted to the hospital and underwent *** the operation,the incarcerated ileum was perforated during repair due to hemorrhage necrosis,and a small volume of enteric fluid leaked from the *** incarcerated ileum was resected,and the femoral hernia was repaired without *** months later,a second operation was performed for an umbilical incisional *** the second operation,multiple small,white nodules were observed throughout the abdominal cavity,resembling peritoneal *** results of peritoneal washing cytology in Douglas’pouch and the examination of frozen nodule sections were compatible with IFBG diagnosis,and incisional hernia repair was *** IFBGs can mimic *** pathological examinations and operation history are valuable for the rapid diagnosis to avoid excessive treatments.

关键词： Foreign body granuloma Peritoneal dissemination Peritoneal seeding Perforation Operation Case report

茎尖嫁接结合预热处理脱除温州蜜柑碎叶枳橙矮化病毒

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福建果树 1991年第2期10卷 51-52,14页

作者： M koizumi 宋瑞琳

由碎叶——枳橙矮化病毒引起的嫁接口皱折病状,在日本的一些枳壳砧品种或无性系上发现。近年来,由于大力进行高接换种而引起某些病毒包括碎叶——枳橙矮化病毒(TL—CSV)广泛传播。利用40/30℃(白天/夜间温度)处理60天以上可以脱除碎叶病... 详细信息

由碎叶——枳橙矮化病毒引起的嫁接口皱折病状,在日本的一些枳壳砧品种或无性系上发现。近年来,由于大力进行高接换种而引起某些病毒包括碎叶——枳橙矮化病毒(TL—CSV)广泛传播。利用40/30℃(白天/夜间温度)处理60天以上可以脱除碎叶病毒,然而温州蜜柑苗木不耐这种热处理温度。由 Murashige 等发现,经 Navarro 等改进的茎尖嫁接技术能够有效地脱除病毒,类病毒及柑桔螺原体(***)但碎叶病毒例外。本文报道了利用茎尖嫁接结合短期予热处理脱除温州蜜柑“Niyu”的碎叶病病毒。

关键词：温州蜜柑茎尖嫁接脱除矮化病毒

SCALING PHOTOSYNTHESIS FROM LEAF TO CANOPY AND REGIONAL SCALES:LINKING PLANT ECOPHYSIOLOGY,REMOTE SENSING AND MODELLING

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SCALING PHOTOSYNTHESIS FROM LEAF TO CANOPY AND REGIONAL SCAL...

第三世界生态高峰会

作者： H.MURAOKA K.NISHIDA J.YOSHINO H.koizumi H.koizumi University of Tsukuba H.koizumi H.koizumi

Spatial and temporal distributions of ecosystem-level photosynthesis are the critical determinant and therefore intensively required ecological phenomena for our understanding and for accurate evaluation climate change effects on regional carbon dynamics. Scaling approach from leaf ecophysiology to canopy and to regional ecosystems has been made by combining modelling and satellite remote *** some of these combined approaches have been providing information and evaluation of carbon dynamics in regional to global scales,we still need to find more accurate methodology for measuring the parameters responsible for ecosystem carbon gain by satellite remote *** achieve these challenges, we have been exploring two major works at the Takayama AsiaFlux site of Gifu University in Japan.(1)Linking leaf and canopy ecophysiology and spectral properties for remote *** leaf biochemical characteristics(photosynthesis,respiration,chlorophy11), leaf spectral properties,leaf morphology,shoot and canopy structure (leaf area and number),with their seasonality(phenology).Then these parameters were combined to estimate the spectral property,light disribution and photosynthesis at the canopy *** analyses were conducted by combining radiative transfer model(SAIL)and canopy photosynthesis *** using thus combined model,we obtained a set of data linking spectral profile and parameters which describes light-response of canopy photosynthesis such as maximum photosynthetic capacity and apparent quantum yield,by satellite remote *** preliminary scaling analyses showed that this approach can estimate ecosystem to regional scale photosynthesis along the biochemical theory of photosynthesis.(2)Linking ecosystem carbon dynamics model with numerical climate model for mountanous area. Most forest ecosystems are distributed in mountanous area in Japan. Such topographical characteristics provide us two major topics to be explored:(i)spatial variation of cli

关键词： SCALING PHOTOSYNTHESIS FROM LEAF TO CANOPY AND REGIONAL SCALES:LINKING PLANT ECOPHYSIOLOGY,REMOTE SENSING AND MODELLING

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中日韩在公共卫生领域的合作(英文)

中日韩在公共卫生领域的合作(英文)

Is Dose Adjustment Based on Several Factors of Body Size Descriptors Effective for Prevention of Thrombocytopenia by Linezolid Therapy in Hemodialysis Patients?

北京论坛（2010）文明的和谐与共同繁荣——为了我们共同的家园：责任与行动

作者： Akio koizumi Department of Health and Environmental Sciences Kyoto University Graduate School of Medicine

Introduction It is well known that three East Asian countries,Japan,China and Korea,have shared similar cultural and spiritual *** include Confucianism and Buddhism,for example. Three countries,however,had developed differently in recent 150 *** dimensions urge three countries to cooperate again to solve recent global problems and prosper in the 21th century.

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Pharmacology & Pharmacy 2016年第10期7卷 417-423页

作者： Hideo Kato Mao Hagihara Yuka Yamagishi Yukihiro Hamada Jun Hirai Naoya Nishiyama Yusuke koizumi Katsuhiko Matsuura Hiroshige Mikamo Department of Infection Control and Prevention Aichi Medical University School of Medicine Nagakute Japan Department of Pharmacy Aichi Medical University School of Medicine Nagakute Japan

Previous study suggested that low body weight was one of the risk factors of thrombocytopenia induced by linezolid in non-hemodialysis patients. However, there have been little investigations for the linezolid-induced thrombocytopenia in hemodialysis patients. This study was to evaluate the association between several factors of body size descriptors and thrombocytopenia in hemodialysis-patients. No factor of body size descriptors showed significant correlation with linezolid-induced thrombocytopenia (patients with thrombocytopenia vs patients without thrombocytopenia: body weight;60.0 kg vs 55.3 kg, p = 0.82: body mass indices;21.1 kg/m2 vs 21.2 mg/m2, p = 0.44: ideal body weight;61.2 kg vs 59.5 kg, p = 0.21: lean body weight;50.1 kg vs 45.7 kg, p = 0.64: dosage amount;20.0 mg/kg vs 21.7 mg/kg, p = 0.74: body surface area;1.65 m2 vs 1.54 m2, p = 0.43). There were not significant differences in the body size descriptors between linezolid therapy for more than 14 days and for less than 13 days (more than 14 days vs less than 13 days: body weight;53.5 kg vs 56.8 kg, p = 0.75: body mass indices;20.9 kg/m2 vs 21.1 mg/m2, p = 0.47: ideal body weight;60.3 kg vs 59.9 kg, p = 0.17: lean body weight;44.3 kg vs 47.7 kg, p = 0.56: dosage amount;22.4 mg/kg vs 21.1 mg/kg, p = 0.67: body surface area;1.51 m2 vs 1.59 m2, p = 0.37). Our data suggested that dosage adjustment of linezolid based on body weight was not recommended in hemodialysis-patients.

关键词： Linezolid Thrombocytopenia Body Weight

Application of radiation chemistry to the construction of functional organic materials

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辐射研究与辐射工艺学报 2005年第2期23卷 102-102页

作者： Tsuneki Ichikawa Hitoshi koizumi Takahide Kimura Tohru Shimizu Division of Molecular Chemistry Graduate School of EngineeringHokkaido University Sapporo 060-8628 JapanDivision of Molecular Chemistry Graduate School of EngineeringHokkaido University Sapporo 060-8628 JapanDivision of Molecular Chemistry Graduate School of EngineeringHokkaido University Sapporo 060-8628 JapanDivision of Molecular Chemistry Graduate School of EngineeringHokkaido University Sapporo 060-8628 Japan

Although radiation-chemical reactions have been applied to many industrial fields, especially to polymer industries, they are mainly aimed at improving mechanical, thermal and surface properties of the materials. Application of radiation chemical reactions to the construction of functional organic materials, such as electronic and optical materials, is relatively few. However, radiation-chemical reactions have the following characteristics that are advantageous for studying and constructing functional organic materials.(1) The reactions take place even in solid without structural deformation, which is advantageous for modifying chemical and physical properties of precisely shaped solid substances.(2) The reactions take place within the region where the radiation energy is absorbed, so that only a part of a solid substance can be modified with precise spatial resolution. Moreover, the region is controllable three dimensionally by changing the field of exposure and the depth of penetration that depends on energy of the ionizing particles.(3) The reactions can be induced without additives, which is advantageous for maintaining purity of the *** would like to show how radiation chemical reactions are useful for the construction of functional organic materials by taking our recent studies on resist polymers for radiation lithography and carbon nano-fibers that are considered to be functional materials for next generation lithography and electronics, *** resist polymers synthesized were polyethylene and poly (methyl acrylate) with benzyl ester of carboxylic acid at the center of the polymer skeleton. Introduction of the benzyl ester to the polymer skeletons changed the polystyrene and the poly (methyl acrylate) from cross-link type to scission type polymers upon γ *** irradiation of the polymers resulted in binary change of the molecular weight, due to the dissociative capture of secondary electrons by the benzyl ester, asMnR1COOCH(C6H5)R

关键词：伽玛辐射氮离子束有机功能材料辐射化学感应

柴胡加龙骨牡蛎汤对载脂蛋白-E基因缺陷小鼠的抗动脉粥样硬化作用

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国际中医中药杂志 2006年第2期28卷 97-98页

作者： koizumi A[英] 李小丽(摘) 阴赪宏(校)

柴胡加龙骨牡蛎汤(SRB)可用于治疗动脉粥样硬化、高血压以及抑郁、失眠、心悸等精神疾病。本次探讨了SRB对载脂蛋白-E(Apo-E)基因缺陷小鼠的抗动脉粥样硬化作用。[第一段]

关键词：抗动脉粥样硬化作用柴胡加龙骨牡蛎汤载脂蛋白-E 基因缺陷小鼠精神疾病高血压 SRB