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Discovery of Paleozoic rocks at northern margin of Sambagawa terrane,eastern Kyushu,Japan:Petrogenesis,U-Pb geochronology and its tectonic implication

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Geoscience Frontiers 2020年第4期11卷 1441-1459页

作者： Kenta Kawaguchi Yasutaka Hayasaka Tomoyuki Shibata Masayuki Komatsu Kosuke kimura Kaushik Das Department of Earth and Planetary Systems Science Graduate School of ScienceHiroshima University1-3-1 KagamiyamaHigashi-HiroshimaHiroshima739-8526Japan Hiroshima Institute of Plate Convergence Region Research 1-3-1 KagamiyamaHigashi-HiroshimaHiroshima739-8526Japan Ehime University 10-13 Dogo-HimataMatsuyamaEhime790-8577Japan

Ordovician diorite-quartz diorite mylonite(Saganoseki quartz diorite) was discovered in Sambagawa metamorphic terrane at the northern margin of Saganoseki Peninsula,Kyushu Island,*** LA-ICP-MS zircon U-Pb geochronology revealed that the intrusion age of Saganoseki quartz diorite was 473.3±3.6 *** rocks show the volcanic arc affinity based on the trace element *** the basis of geochronological and geochemical results,Saganoseki quartz diorite is considered to be a member of the Early Paleozoic igneous rocks of the Kurosegawa tectonic *** quartz diorite is located just south of the Median Tectonic Line(MTL)and is in close contact with the pelitic and psammitic schist without any brittle shear zone.U-Pb ages of detrital zircon grains from two psammitic schists show the estimated sedimentation age of early Late Cretaceous,indicate that these psammitic schists are the member of Sambagawa metamorphic *** with these results and the mode of occurrence in the field,we argue that the Early Paleozoic igneous rocks of the Kurosegawa tectonic zone existed as an upper structural unit of the Sambagawa *** relationship is the key to reconstruct the Mesozoic tectonics of Japan as a part of East Asia,and its evolution through time.

关键词： Outer zone of southwest Japan Sambagawa metamorphic terrane Kurosegawa tectonic zone LA-ICP-MS zircon U-Pb age Saganoseki quartz diorite

Fluorescent Superlattices of Gold Nanoparticles:A New Class of Functional Materials

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Nano Research 2009年第3期2卷 220-234页

作者： Edakkattuparambil Sidharth Shibu Madathumpady Abubaker Habeeb Muhammed Keisaku kimura Thalappil Pradeep DST Unit on Nanoscience(DST UNS) Department of Chemistry and Sophisticated Analytical Instrument FacilityIndian Institute of TechnologyMadrasChennai 600036India Graduate School of Material Science University of Hyogo3-2-1 KotoKamigori-choAko-gun Hyogo 678-1297Japan

Fluorescent three-dimensional(3-D)superlattices of dansyl glutathione protected gold nanoparticles,with potential applications in molecular detection,have been synthesized at an air/water interface by controlling the pH of the nanoparticle *** number of fluorophores per nanoparticle was calculated to be~*** of the superlattice crystals were examined using scanning electron microscopy(SEM).Most of the crystals observed were triangular in ***-resolution transmission electron microscopy(HRTEM)and small angle X-ray scattering(SAXS)were used to study the packing of nanoparticles in these *** these studies showed that the nanoparticles were arranged in a face-centered cubic(fcc)pattern with a particle-particle distance(center-center)of~10.5 *** of the crystal morphologies with time was also *** fluorescence properties of these triangles were studied using confocal fluorescence imaging and confocal Raman mapping,which were in good agreement with the morphologies observed by *** superlattice exhibits near-infrared(NIR)absorption in the range 1100-2500 *** synthesis of such functional nanoparticle-based solids makes it possible to use them in novel *** utilized the fluorescence of dansyl glutathione gold superlattice crystals for the selective detection of bovine serum albumin(BSA),the major protein constituent of blood plasma,based on the selective binding of the naphthalene ring of the dansyl moiety with site I of BSA.

关键词： Periodic self-assembly dansyl glutathione fluorescent superlattice confocal fluorescence imaging selective binding

Structure characteristics and microwave dielectric properties of Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) solid solution ceramic with a stable temperature coefficient

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Journal of Materials Science & Technology 2022年第21期116卷 121-129页

作者： Huanrong Tian Jinjie Zheng Lintao Liu Haitao Wu Hideo kimura Yizhong Lu Zhenxing Yue School of Environmental and Material Engineering Yantai UniversityYantai 264005China School of Materials Science and Engineering University of JinanJinan 250022China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)(x=0.1-1.0)ceramics were prepared via a conventional solid-state method,the dependence of crystal structure and bond characteristics on microwave dielectric properties was investigated *** X-ray diffraction patterns indicated that the single-phase Pr_(2)Zr_(3)(MoO_(4))_(9)structure was formed in all the *** the Ti^(4+)content increased,the lattice volume gradually decreased,which was ascribed to the fact that the ionic radius of Ti^(4+)was smaller than that of Zr^(4+).Notably,outstanding microwave dielectric properties withεr of 10.73-16.35,Q·f values of 80,696-18,726 GHz and minorτ_(f) values−14.1-−2.6 ppm/℃were achieved in Pr_(2)(Zr_(1−x)Ti_(x))_(3)(MoO_(4))_(9)***ε_(r) increased with the rising x values,which was associated with the increase ofα/Vm *** decreasing Q·f was affected by the decline of lattice energy of[Zr/TiO_(6)]***τf value was dominated by[Zr/TiO_(6)]octahedral distortion,Mo-O bond energy,bond strength and B-site bond ***,infrared reflection spectra suggested that the properties were mainly caused by the absorption of phonon,and the dielectric loss could be further reduced by optimizing the experimental process.

关键词： Pr_(2)(Zr_(1-x)Ti_(x))_(3)(MoO_(4))_(9) Normalized bond length Bond characteristics Raman spectra

Transplantation of olfactory ensheathing cells promotes axonal regeneration in a rat model of spinal cord injury

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Neural Regeneration Research 2010年第9期5卷 651-656页

作者： Xichuan Teng Nozomu Yoshioka Junko kimura-Kuroda Koki Kawamura HitoshiKawano Hongpeng Li Department of Developmental Morphology Tokyo Metropofitan Institute for Neuroscience Fuchu 183-8526 Japan Department of Pathology Medical College Eastern Liaoning University Dandong 118000 Liaoning Province China Department of Human Anatomy College of Basic Medical Sciences China Medical University Shenyang 110001 Liaoning Province China

BACKGROUND：Transplantation of olfactory ensheathing cells （OECs） into the injured spinal cord has been shown to promote axonal regeneration and functional ***,the mechanisms underlying the effects of OEC transplantation remain ***：To observe fibrotic scar formation and axonal regeneration in the damaged spinal cord following OEC transplantation,and to determine whether OEC transplantation promotes neural regeneration by attenuating fibrotic scar ***,TIME AND SETTING：A randomized,controlled animal experiment was performed at the Department of Developmental Morphology,Tokyo Metropolitan Institute for Neuroscience,Fuchu,Japan and at the Department of Human Anatomy,College of Basic Medical Sciences,China Medical University,China between April 2007 and May ***：OECs were obtained from olfactory nerves and olfactory bulbs of male,4-week-old,Sprague Dawley *** anti-serotonin polyclonal antibody,rabbit anti-calcitonin gene-related peptide polyclonal antibody,rabbit anti-glial fibrillary acidic protein polyclonal antibody,rabbit anti-type IV collagen polyclonal antibody,and mouse anti-rat endothelial cell antigen-1 monoclonal antibody were ***：Male,Sprague Dawley rats aged 8 weeks were randomly divided into three groups：sham-surgery （n = 3）,surgery （n = 9）,and OEC transplantation （n = 11）.Spinal cord transection at the T9-10 level was performed and the rats were transplanted with a 2-μL （1 × 105 cells） cell *** OUTCOME MEASURES：Formation of glial and fibrotic scars was examined using immunohistochemistry for glial fibrillary acidic protein and type IV ***-positive and calcitonin gene-related peptide-positive axons were visualized by immunohistochemistry,*** immunofluorescence for type IV collagen and rat endothelial cell antigen-1 was also performed to determine co-localization of type IV collagen deposition and blood ***：At 1 week after spinal cord

关键词： fibrotic scar olfactory ensheathing cell transplantation spinal cord injury neural regeneration rats

Surgical treatment for a combined anterior cruciate ligament and posterior cruciate ligament avulsion fracture: A case report

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World Journal of Clinical Cases 2022年第12期10卷 3879-3885页

作者： Katsuhiro Yoshida Michiyuki Hakozaki Hideo Kobayashi Masashi kimura Shinichi Konno Department of Orthopaedic Surgery Fukushima Medical University School of MedicineFukushima 960-1295Japan Higashi-Shirakawa Orthopaedic Academy Fukushima Medical University School of MedicineFukushima 960-1295Japan Department of Orthopaedic Surgery Sukagawa HospitalFukushima 962-0022Japan Gunma Sports Medicine Research Center Zenshukai HospitalGunma 379-2115Japan

BACKGROUND Independent avulsion fractures with anterior cruciate ligament(ACL)or posterior cruciate ligament(PCL)attachment are relatively common among tibial intercondylar eminence fractures,and their postoperative outcomes are generally ***,huge avulsion fractures of the intercondylar eminence containing the attachment site of both the ACL and the PCL are extremely rare,and the reported clinical outcomes are *** SUMMARY We describe a 30-year-old Japanese male's huge avulsion fracture of the intercondylar eminence of a tibia containing the attachment site of both the ACL and PCL,together with a complete tear of the medial collateral ligament and a partial tear of both the medial and lateral menisci caused by a fall from a high *** of these injuries were treated surgically,with anatomical reduction and stable *** limb function at 1 year post-surgery was excellent(Lysholm score:100 points).CONCLUSION Although this patient's complete surgical repair was complex,it should be performed in similar cases for an excellent final clinical outcome.

关键词： Avulsion fracture Intercondylar eminence Tibia Anterior cruciate ligament Posterior cruciate ligament Meniscal tear

Lactogenic hormones alter cellular and extracellular microRNA expression in bovine mammary epithelial cell culture

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Journal of Animal Science and Biotechnology 2016年第4期7卷 504-513页

作者： Susumu Muroya Tatsuro Hagi Ataru kimura Hisashi Aso Masatoshi Matsuzaki Masaru Nomura Animal Products Research Division NARO Institute of Livestock and Grassland Science Faculty of Agriculture and Life Science Hirosaki University International Education and Research Center for Food and Agricultural Immunology(CFAI) Graduate School of Agricultural ScienceTohoku University

Background： Bovine milk contains not only a variety of nutritional ingredients but also microRNAs （miRNAs） that are thought to be secreted by the bovine mammary epithelial cells （BMECs）. The objective of this study was to elucidate the production of milk-related miRNAs in BMECs under the influence of lactogenic hormones. Results： According to a microarray result of milk exosomal miRNAs prior to cellular analyses, a total of 257 miRNAs were detected in a Holstein cow milk. Of these, 18 major miRNAs of interest in the milk were selected for an expression analysis in BMEC culture that was treated with or without dexamethasone, insulin, and prolactin （DIP） to induce a lactogenic differentiation. Quantitative polymerase chain reaction （qPCR） results showed that the expressions of miR-21-Sp （P = 0.005）, miR-26a （P = 0.016）, and miR-320a （P = 0.011） were lower in the DIP-treated cells than in the untreated cells. In contrast, the expression of miR-339a （P-- 0.017） in the cell culture medium were lower in the DiP-treated culture than in the untreated culture. Intriguingly, the miR-148a expression in cell culture medium was elevated by DIP treatment of BMEC culture （P = 0.018）. The medium-to-cell expression ratios of miR- 103 （P = 0.025）, miR-148a （P 〈 0.001）, and miR-223 （P = 0.013） were elevated in the DIP-treated BMECs, suggesting that the lactogenic differentiation-induced secretion of these three miRNAs in BMECs. A bioinformatic analysis showed that the miRNAs down-regulated in the BMECs were associated with the suppression of genes related to transcriptional regulation, protein phosphorylation, and tube development. Conclusion： The results suggest that the miRNAs changed by lactogenic hormones are associated with milk protein synthesis, and mammary gland development and maturation. The elevated miR-148a level in DIP-treated BMECs may be associated with its increase in milk during the lactation period of cows.

关键词： Bovine mammary epithelial cell Lactogenic differentiation microRNA Milk Secretion

Opaque Minerals in LL3.0-6 Chondrites I: Mineralogy of Ti-oxides and ^(53)Mn-^(53)Cr Systematics of Ilmenite

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Acta Geologica Sinica(English Edition) 2004年第5期78卷 1082-1089页

作者： kimura Makoto SUGIURA Naoji NAKAJIMA Haruna Michael K.WEISBERG Faculty of Science Ibaraki University Mito 310-8512 JapanDepartment of Earth and Planetary Science University of Tokyo Tokyo 113-0033 JapanFaculty of Science Ibaraki University Mito 310-8512 JapanDepartment of Physical Sciences Kingsborough College of the City University of New YorkBrooklyn NY 11235 Department of Earth and Planetary Sciences American Museum of Natural HistoryNew York NY10024 USA.

We conducted a systematic study of oxide minerals in LL3.0-6 chondrites, and found ilmenite, rutile, perovskite and an unknown Al-Ti-Zr-oxide. Ilmenite is low in abundance, but is present in the chondrules and matrix of all the samples that we studied. The MnO content of ilmenite in LL3.0-3.3 is lower than that in LL3.5-6. The low concentration of MnO in the former is due to crystallization from chondrules melts at high temperatures. On the other hand, ilmenite composition in LL3.5-6 reflects thermal metamorphism. Therefore, ilmenite is indicative of petrologic type. We also made the first measurements of the 53Mn-53Cr systematics of ilmenite in ordinary chondrites. The age for ilmenite in Y790256 (LL6) is determined to be about 2 Ma older than angrites. This may represent the metamorphic age of the LL chondrites.

关键词： chondrite ilmenite Mn-Cr isotopes

Advanced ferroferric oxide-based composites for lithium-ion battery: Recent developments and future perspectives

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Progress in Natural Science:Materials International 2023年第6期33卷 743-753页

作者： Huiyu Jiang Qin Mu Hideo kimura Rui Liu Wenyue Yang Liyuan Liu Wei Du Chuanxin Hou School of Environmental and Material Engineering Yantai University Shandong Institute of Scientific and Technical Information Shandong University of Aeronautics

Lithium-ion batteries(LIBs) possess remarkable advantages in terms of abundant reserves,high theoretical capacity,and low ***,the current graphite anodes fail to meet the daily requirements of *** study of novel high-energy storage LIBs anode materials is increasingly *** oxide(Fe3O4)anode material is listed as a research object due to its exceptional theoretical specific capacity,cost-effectiveness,sufficient resources,and simple preparation ***,the low conductivity and volume expansion issues limit its long-term development and widespread ***,extensive research has been reported on Fe3O4composite electrode materials with diverse structures,achieving significant *** review summarizes the latest progress in high-performance Fe3O4composites based on recent ***,Fe3O4composite anode materials based on dimensions is categorized and the structure-property relationship with different dimensions is *** work will motivate the preparation of Fe3O4-based composites electrodes with high electrochemical performance for lithium-ion batteries,aims to promote the commercial application of rechargeable lithium-ion energy storages.

关键词： Lithium-ion batteries Fe_3O_4 Transition metal oxide Anode Morphology construction

Non-planar and Non-linear Second Sound Waves in He Ⅱ

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Chinese Physics Letters 2000年第1期17卷 43-45页

作者： ZHANG Peng kimura Seiji MURAKAMI Masahide WANG Ru-zhu Institute of Refrigeration and Cryogenics Shanghai Jiao Tong UniversityShanghai 200030 Institute of Engineering Mechanics and Systems University of TsukubaTsukuba-city305-8573Japan

Non-planar and non-linear second sound wave are experimentally investigated in an open He Ⅱ *** is found that second sound wave characterized by a negative tail part in an open He Ⅱ bath is different from that propagating through a channel,and the shape of the negative tail part of second sound wave varies at different location in an open He Ⅱ *** consideration is also carried out based on two-fluid model and vortex evolution *** is found that experimental and theoretical results agree rather well with each *** sound wave may develop into the thermal shock wave provided that the heat Hux is large.

关键词： equation. planar wave