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How does the 120-year cycle mast seeding of dwarf bamboo affect the rodent population?

Ecological Processes 2022年第1期11卷 577-586页

作者： Hanami Suzuki Haruka Kashiwagi hisashi Kajimura Laboratory of Forest Protection Graduate School of Bioagricultural SciencesNagoya UniversityFurochoChikusakuNagoya 468-8601Japan Nagoya City Science Museum NakakuNagoya 460-0008Japan

Background:In 2017,large-scale flowering,seeding,and dying events of dwarf bamboo(Sasa borealis)occurred in a wide range in central Japan for the first time in 120 *** phenomenon of ***,like the mast seeding of trees,could be expected to provide a large amount of food for seed-eating rodents and gradually affect their ecology and population *** captured rodents in survey plots in a secondary broad-leaved forest with the phenomenon from 2018 to 2019 to investigate the species,the number of individuals,growing stage,sex,and body *** addition,we also compared the capture data for 2 years(2018–2019)with that for the mast seeding year(2017)and 6 years before it(2011–2016).Results:The mast seeding of *** greatly increased the population size of rodents,especially Apodemus speciosus and ***,Eothenomys smithii did not show such an *** of the captured rodent individuals were already adults at the time of new capture,and the proportion of male juveniles was extremely *** results suggest that the mast seeding of *** created unusually rich food availability for the population concentration of rodents due to their ***,body mass was not significantly different before and after the mast *** addition,the increased populations of the two Apodemus species did not decline 2 years after the *** masting,contrary to the previously reported decrease of rodent populations after tree ***:Our results indicate that the mast seeding of *** affected the population dynamics of Apodemus species over a long time and their individual composition of different growth ***,it did not affect their body mass.

关键词： Apodemus speciosus Apodemus argenteus Eothenomys smithii Mast seeding Population dynamics Predator satiation hypothesis Sasa borealis

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Coexistence of cluster and shell-model aspects in nuclear systems

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Frontiers of physics 2018年第6期13卷 89-113页

作者： Yoshiko Kanada-En'yo hisashi Horiuchi Department of Physics Kyoto University Kitashirakawa Oiwake-Cho Kyoto 606-8502 Japan Research Center for Nuclear Physics (RCNP) Osaka University Ibaraki Osaka 567-0047 Japan

We discuss cluster phenomena in light nuclei. As examples of typical cluster structures, we first review cluster structures of 12C, 16O, and 20Ne, and then introduce some topics of cluster phenomena in light neutron-rich nuclei such as Be and C isotopes. A particular attention is paid on coexistence of cluster and shell-model aspects.

关键词： cluster nuclear structure

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S-1 induced hepatic steatosis in patients with pancreatic cancer:Retrospective analysis

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World Journal of Gastrointestinal Oncology 2017年第8期9卷 314-318页

作者： Kunihiro Tsuji hisashi Doyama Department of Gastroenterology Ishikawa Prefectural Central HospitalIshikawa 920-8530Japan

To determine whether S-1 induces hepatic steatosis in patients being treated for pancreatic cancer. METHODSThis retrospective study evaluated 22 patients who received oral S-1 as a first-line treatment for pancreatic cancer between January 2008 and July 2015 at the Ishikawa Prefectural Central Hospital. Patients underwent abdominal computed tomography (CT) scans before chemotherapy and within 3 mo from the start of treatment. CT numbers of the liver and spleen were measured before and after S-1 administration. Steatosis was diagnosed when the ratio of the CT number of the liver to that of the spleen (liver/spleen ratio) was 2 (range, 18-27 kg/m2). Of the 22 patients, six (27%) regularly consumed alcohol, and five (23%) had liver metastases. The mean ratio of CT number of the liver to the spleen was significantly higher before administration of S-1 (1.27 vs 1.09, P = 0.012) compared with after. Of the 22 patients, five (23%) had hepatic steatosis and 17 (77%) did not. The pretreatment demographic and clinical characteristics of these two groups showed no significant differences. The relationship between liver/spleen ratio and alanine transaminase activity in these patients. A statistically significant inverse correlation was observed (r = -0.417, P < 0.027). CONCLUSIONOf the 22 patients with pancreatic cancer, five (23%) experienced S-1 induced hepatic steatosis. Care should be taken during S-1 treatment of patients with pancreatic cancer.

关键词： S-1 Hepatic steatosis Pancreatic cancer Drug induced hepatitis 5-fluorouracil

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Recent Advancement in Optical Fiber Sensing for Aerospace Composite Structures

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Photonic Sensors 2013年第4期3卷 345-354页

作者： Shu MINAKUCHI Nobuo takeda Graduate School of Frontier Sciences The University of Tokyo 5-1-5 Kashiwanoha Kashiwa-shi Chiba 277-8561Japan

Optical fiber sensors have attracted considerable attention in health monitoring of aerospace composite structures. This paper briefly reviews our recent advancement mainly in Brillouin-based distributed sensing. Damage detection, life cycle monitoring and shape reconstruction systems applicable to large-scale composite structures are presented, and new technical concepts, ＂smart crack arrester＂ and ＂hierarchical sensing system＂, are described as well, highlighting the great potential of optical fiber sensors for the structural health monitoring （SHM） field.

关键词： Carbon fiber reinforced plastic (CFRP) Brillouin-based system fiber Bragg grating (FBG)

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Redox active ionic liquid as efficient mediator and solvent for visible light-driven B_(12) catalytic reactions

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Green Energy & Environment 2019年第2期4卷 116-120页

作者： hisashi Shimakoshi Noriyuki Houfuku Li Chen Yoshio Hisaeda Department of Chemistry and Biochemistry Graduate School of Engineering Kyushu University

The redox active ionic liquid, 1-ethyl-4-(methoxycarbonyl)pyridinium bis(trifluoromethanesulfonyl)amide(RIL), was synthesized from its iodide form by an anion exchange reaction of Li(NTf_2) with viscos liquid(η= 122 cP at 25C) and characterized by NMR, IR, and elemental analysis. The compound showed reversible redox couples at -0.65 V and -1.48 V vs. Ag/AgCl and worked as an electron mediator in the B_(12) complex/[Ru(bpy)_3]Cl_2 photosensitizer catalytic system under visible light irradiation. The catalytic efficiency in the RIL was higher than those in DMF, MeOH, and the redox inactive ionic liquid, 1-butyl-3-methyl imidazolium bis(trifluoromethylsulfonyl)amide.

关键词： Ionic liquid Photosensitizer Redox active Visible light Vitamin B12

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Nonlocalized clustering and evolution of cluster structure in nuclei

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Frontiers of physics 2020年第1期15卷 71-134页

作者： Bo Zhou Yasuro Funaki hisashi Horiuchi Akihiro Tohsaki Institute for the Advancement of Higher Education Hokkaido UniversitySapporo 060-0817Japan Department of Physics Hokkaido UniversitySapporo 060-0810Japan College of Science and Engineering Kanto Gakuin UniversityYokohama 236-8501Japan Research Center for Nuclear Physics(RCNP) Osaka UniversityOsaka 567-0047Japan

We explain various facets of the THSR(Tohsaki-Horiuchi Schuck-Ropke)wave *** first discuss the THSR,wave function as a wave function of cluster-gas state,since the THSR,wave function was originally introduced to elucidate the 3a-condensate-like character of the Hoyle state(O2^+ state)of *** briefly review the cluster-model studies of the Hoyle state in 1970’s in order to explain how there emerged the idea to assign the a condensate character to the Hoyle *** then explain that the THSR wave function can describe very well also non-gaslike ordinary cluster states with spatial localization of *** fact means that the dynamical motion of clusters is of nonlocalized nature just as in gas-like states of clusters and the localization of clusters is due to the inter-cluster Pauli principle which is against the close approach of two *** nonlocalized cluster dynamics is formulated by the container model of cluster *** container model describes gas-like state and non-gaslike states as the solutions of the Hill Wheeler equation with respect to the size parameter of THSR wave function which is just the size parameter of the *** we notice that fact that the THSR wave function with the smallest value of size parameter is equivalent to the shell-model wave function,we see that the container model describes the evolution of cluster structure from the ground state with shell-model structure up to the gas-like cluster state via ordinary non-gaslike cluster *** the description of various cluster structure,more generation of THSR wave function have been introduced and we review some typical examples with their actual applications.

关键词： Hoyle state alpha condensation THSR wave function,nonlocalized clustering container model evolution of cluster structure

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Chemical Interpretation on the Multi-Stage Oxidation of Diethyl Ether

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Journal of Thermal Science 2023年第2期32卷 513-520页

作者： SAKAI Yasuyuki NAKAMURA hisashi SUGITA Toru TEZUKA Takuya UYGUN Yasar Department of Mechanical Systems Engineering Ibaraki UniversityIbaraki 316-8511Japan Institute of Fluid Science Tohoku UniversityMiyagi 980-8577Japan Graduate School of Engineering Tohoku UniversityMiyagi 980-8579Japan Mathematics and Logistics Jacobs University BremenBremen 28759Germany

Multi-stage ignition and/or double NTC(negative temperature coefficient)behavior resulted from the low-temperature oxidation of ether compounds are still not clearly *** have investigated the oxidation mechanism of a stoichiometric DEE(diethyl ether)/air mixture by using a micro flow reactor with a controlled temperature profile to see the detail of low-temperature weak flame *** simulation was also performed to understand the chemical kinetics mechanism of observed weak flame *** measurement showed separated weak flame in the temperature range of 600 K-800 *** simulation also qualitatively reproduced this separated weak flame,and showed four peak of heat *** the reaction flow analysis,it was found that(1)O-O bond scission reaction of keto-hydroperoxide produced by DEE,(2)O-O bond scission reaction of CH3O2H,CH3CO3H,and C2H5O2H,(3)O-O bond scission reaction of H2O2,and(4)H+O2=O+OH are key chain branching reactions to explain the multi-stage oxidation.

关键词： diethyl ether micro flow reactor weak flame multi-stage oxidation reaction path

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Numerical and Experimental Studies of an Arc-heated Nonequilibrium Nozzle Flow

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Journal of Thermal Science 2003年第4期12卷 289-293页

作者： Michio Nishida Ken-ichi Abe hisashi Kihara Department of Aeronautics and Astronautics Kyushu University Fukuoka 812-8581 JapanDepartment of Aeronautics and Astronautics Kyushu University Fukuoka 812-8581 JapanDepartment of Aeronautics and Astronautics Kyushu University Fukuoka 812-8581 Japan

The arc-heated high-temperature gas is rotationally and vibrationally excited, and partially dissociated and ionized. When such gas flows inside a nozzle, energy transfers from rotational and vibrational energy modes to translational energy mode, and, in addition, recombination reactions occur. These processes are in thermal and chemical nonequilibrium. The present computations treat arc-heated nonequilibrium nozzle flows using a six temperature model (translational, rotational, N2 vibrational, O2 vibrational, NO vibrational and electron temperatures), and nonequilibrium chemical reactions of air. From the calculated flow properties, emission spectra at the nozzle exit were re-constructed by using the code for computing spectra of high temperature air. On the other hand, measurements of N2+(1-) emission spectra were conducted at the nozzle exit in the 20 kW arc-heated wind tunnel. Vibrational and rotational temperatures of N2 were determined using a curve fitting method on N2+(1-) emission spectra, with the vibrational and rotational temperatures for N2 and N2+ being assumed equal. Comparison of the measured and computed results elucidated that the experimental temperatures were larger than the computed ones. At present, we are trying to reveal the main reason for the discrepancy between the computed and measured N2 vibrational and rotational temperatures.

关键词： nozzle flow high temperature gas nonequilibrium flow arc-heated gas.

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Synthetic and nature-derived lipid nanoparticles for neural regeneration

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Neural Regeneration Research 2015年第5期10卷 689-690页

作者： Yuji S.takeda Qiaobing Xu Department of Biomedical Engineering Tufts University

Challenges and opportunities in nerve regeneration： The central nervous system （CNS） has a limited ability to regen- erate. Subsequent to spinal injury, glial scar formation, creat- ed by fibroblasts, neuroglia, monocytes, and endothelial cells, inhibits regeneration of the injured nerve. The peripheral nervous system （PNS） has a greater regeneration potential than the CNS; however, the current gold standard of treat- ment for a large nerve defect is still autologous nerve grafts, which require multiple surgeries. For this reason, researchers have been trying to regenerate nervous tissues, including brain, spinal cord. and PeriPheral nerves, for decades.

关键词： Synthetic and nature-derived lipid nanoparticles for neural regeneration RVG RNA gene NGF

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FDNet:A Deep Learning Approach with Two Parallel Cross Encoding Pathways for Precipitation Nowcasting

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Journal of Computer Science & Technology 2023年第5期38卷 1002-1020页

作者：闫碧莹杨超陈峰 Kohei takeda Changjun Wang University of Chinese Academy of Sciences Beijing 100049China Institute of Software Chinese Academy of SciencesBeijing 100190China School of Mathematical Sciences Peking UniversityBeijing 100871China Peng Cheng Laboratory Shenzhen 518052China Guiyang Academy of Information Technology Guiyang 550081China NTT DATA Corporation Tokyo 163-8001Japan NTT DATA Institute of Management Consulting Inc. Tokyo 163-8001Japan

With the goal of predicting the future rainfall intensity in a local region over a relatively short period time,precipitation nowcasting has been a long-time scientific challenge with great social and economic *** radar echo extrapolation approaches for precipitation nowcasting take radar echo images as input,aiming to generate future radar echo images by learning from the historical *** effectively handle complex and high non-stationary evolution of radar echoes,we propose to decompose the movement into optical flow field motion and morphologic *** this idea,we introduce Flow-Deformation Network(FDNet),a neural network that models flow and deformation in two parallel cross *** flow encoder captures the optical flow field motion between consecutive images and the deformation encoder distinguishes the change of shape from the translational motion of radar *** evaluate the proposed network architecture on two real-world radar echo *** model achieves state-of-the-art prediction results compared with recent *** the best of our knowledge,this is the first network architecture with flow and deformation separation to model the evolution of radar echoes for precipitation *** believe that the general idea of this work could not only inspire much more effective approaches but also be applied to other similar spatio-temporal prediction tasks.

关键词： spatio-temporal predictive learning precipitation nowcasting neural network

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