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PRECISE SYNTHESIS OF OLEFIN BLOCK COPOLYMERS USING A SYNDIOSPECIFIC LIVING POLYMERIZATION SYSTEM

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Chinese Journal of Polymer Science 2013年第4期31卷 541-549页

作者：蔡正国 Hai-hui Su Takeshi shiono State Key Lab for Modification of Chemical Fibers and Polymer Materials College of Material Science and EngineeringDonghua University Graduate School of Engineering Hiroshima University

This feature article summarizes the synthesis of novel olefin block copolymers using fast syndiospecific living homo- and copolymerization of propylene, higher 1-alkene, and norbornene with ansa-fluorenylamidodimethyltitanium- based catalyst according to the authors＇ recent results. The catalytic synthesis of monodisperse polyolefin and olefin block copolymer was also described using this living system.

关键词： Single-site catalyst Propylene Norbomene Living polymerization Block copolymer.

SUBSTITUENT EFFECTS OF tert-BUTYL GROUPS ON FLUORENYL LIGAND OF [t-BuNSiMe2Flu] ZrMe2

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Chinese Journal of Polymer Science 2008年第5期26卷 575-578页

作者： Yuushou Nakayama Takeshi shiono Department of Applied Chemistry Graduate School of EngineeringHiroshima UniversityHigashi-Hiroshima 739-8527Japan

[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 and[t-BuNSiMe_2(3,6-t-Bu_2Flu)]ZrMe_2 were synthesized,and the solid structure of complex[t-BuNSiMe_2(2,7-t-Bu_2Flu)]ZrMe_2 was elucidated by single crystal X-ray *** complexes were applied for propylene polymerization using dried modified methylaluminoxane as a cocatalyst at 0℃and 20℃in *** systems did not show activity at 0℃,but they conducted the polymerization at 20℃.The introduction of t-butyl substituents to the fluorenyl ligand improved the activ...

关键词： Single-site catalyst Zirconium complex Propylene Polymerization Syndiospecificity.

Degradation diagnosis of lithium-ion batteries using AC impedance technique in fixing the state of charge of an electrode

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Journal of Energy Chemistry 2021年第2期30卷 285-289,I0010页

作者： Keisuke Ando tomoyuki Matsuda Daichi Imamura E-Mobility Research Division Japan Automobile Research Institute2530 KarimaTsukubaIbaraki 305-0822Japan

A sustainable society requires an increase in electrified vehicles(xEVs) with a low environmental impact. Among various types of xEVs, battery electric vehicles (BEVs) with lithium-ion batteries(LIBs) have received co... 详细信息

关键词： Degradation diagnosis AC impedance dV/dQ curve analysis Lithium-ion battery Non-destructive analysis

A13 dopamine cell group in the zona incerta is a key neuronal nucleus in nociceptive processing

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Neural Regeneration Research 2021年第7期16卷 1415-1416页

作者： Shunpei Moriya tomoyuki Kuwaki Department of Physiology Kagoshima University Graduate School of Medical and Dental ScienceKagoshimaJapan

In stressful modern society, pain caused by physical and mental disorders is an increasing social health problem all over the *** and mental activity depends on the state of various neurotransmitters in the central nervous system(CNS).Monoaminergic systems play important roles in regulating physiological functions including *** is well known that in the CNS, there are descending pathways related to nociceptive processing known as the descending antinociceptive system(DAS).Noradrenalin and serotonin are major components of the DAS that form the locus coeruleus(LC)-spinal dorsal horn noradrenergic circuit and periaqueductal gray(PAG)-rostro ventricular medulla(RVM)-spinal dorsal horn serotonergic circuit(Jordan et al., 2008).Dopaminergic pathways also play roles in regulating nociceptive processing in the CNS.

关键词： al. dopamine ventricular

Coset vertex operator algebras and W-algebras of A-type

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Science China Mathematics 2018年第2期61卷 191-206页

作者： tomoyuki Arakawa Cuipo Jiang Research Institute for Mathematical Sciences Kyoto University School of Mathematical Sciences Shanghai Jiao Tong University

We give an explicit description for a weight three generator of the coset vertex operator algebra C_L_(sln)(l,0)L_(sln)(1,0)(L_(sln)(l+1,0),for n≥2, l≥1. Furthermore, we prove that the nommutant C_L_(sl3)(l,0)L_(sl3)(1,0)(L_(sl3)(l+1,0)) is isomorphic to the W-algebra W_(-3+(l+3)/(l+4))(sl_3), which confirms the conjecture for the sl_3 case that C_L_g(l,0)L_g(1,0)(L_g(l + 1,0)) is isomorphic to W_(-h+(l+h)/(l+h+1))(g) for simaly-laced Lie algebras g with its Coxeter number h for a positive integer l.

关键词： W-algebra coset vertex operator algebra rationality

Synthesis of Granular Hydroxy‑Functionalized Ultra‑high‑molecular‑weight Polyethylene and Its Fiber Properties

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Advanced Fiber Materials 2022年第4期4卷 786-794页

作者： Haobo Yuan Cong Long Junrong Yu Fuyou Ke Takeshi shiono Zhengguo Cai State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghai 201620People’s Republic of China Graduate School of Advanced Science and Engineering Hiroshima UniversityKagamiyama 1‑4‑1Higashi‑HiroshimaHiroshima 739‑8527Japan

Granular hydroxyl-functionalized UHMWPE was successfully prepared through copolymerization of ethylene and 10-undecen-1-ol protected by tri-iso-butylaluminum using a titanium complex.[tBuNSiMe_(2)(2,7-tBu2Flu)]TiMe_(2) was activated in hexane by silica-supported *** any additional pretreatments,the obtained polymer powders were transformed into fibers through a gel-spinning and heat drawing *** compared to fibers generated from the equivalent unfunctionalized UHMWPE or the commercial HUMWPE,both creep resistance and hydrophilic properties were improved in the hydroxy-functionalized UHMWPE fibers without losing tensile strength.

关键词： Hydroxy-functionalized UHMWPE Ansa-Fluorenylamidodimethyltitanium Silica-supported MMAO UHMWPE fiber Creep resistance

Nonlinear Activation Functions in CNN Based on Fluid Dynamics and Its Applications

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Computer Modeling in Engineering & Sciences 2019年第1期118卷 1-14页

作者： Kazuhiko Kakuda tomoyuki Enomoto Shinichiro Miura Department of Mathematical Information Engineering College of Industrial TechnologyNihon UniversityChiba 275-8575Japan Department of Liberal Arts and Basic Sciences College of Industrial TechnologyNihon UniversityChiba

The nonlinear activation functions in the deep CNN(Convolutional Neural Network)based on fluid dynamics are *** propose two types of activation functions by applying the so-called parametric softsign to the negative *** use significantly the well-known TensorFlow as the deep learning *** CNN architecture consists of three convolutional layers with the max-pooling and one fullyconnected softmax *** CNN approaches are applied to three benchmark datasets,namely,MNIST,CIFAR-10,and *** results demonstrate the workability and the validity of the present approach through comparison with other numerical performances.

关键词： Deep learning CNN activation function fluid dynamics MNIST CIFAR-10 CIFAR-100.

Structure of polyelectrolyte brushes studied by coarse grain simulations

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Friction 2014年第1期2卷 73-81页

作者： Hitoshi WASHIZU tomoyuki KINJO Hiroaki YOSHIDA Toyota Central R&D Labs. Inc.41-1 YokomichiNagakuteAichi 480-1192Japan Elements Strategy Initiative for Catalysts and Batteries Kyoto UniversityKatsuraKyoto 615-8520Japan

As an example of a very low friction system,Monte Carlo Brownian dynamics simulations have been used to calculate equilibrium structures of a polyelectrolyte brush grafted onto *** polymers were calculated in a semi-flexible coarse-grain model that is appropriate to treat the charge density of the *** effect of linear charge density on the polyionx,the surface negative charge,and added salts were *** salt-free solution,scaling theories predicted the structure well in the *** the highxregion,additional shrinkage was found from the theories due to counterion *** effect of surface charge showed not only the repulsion of the polyion from the surface but also the shrinkage in the highxregion due to the additional counterions required for electrical *** addition of salts led to the shrinkage of the brush heights,and in the highxregion,additional extension was *** computational strategy for calculating the friction dynamics of the system is also discussed.

关键词： polyelectrolyte brush friction Monte Carlo Brownian dynamics simulation soft materials automotive tribology

Anticancer effect of adenosine on gastric cancer via diverse signaling pathways

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World Journal of Gastroenterology 2015年第39期21卷 10931-10935页

作者： Ayako Tsuchiya tomoyuki Nishizaki Division of Bioin- formation Department of Physiology Hyogo College of Medicine

Extracellular adenosine induces apoptosis in a variety of cancer cells via intrinsic and extrinsic pathways. In the former pathway, adenosine uptake into cells triggers apoptosis, and in the latter pathway, adenosine receptors mediate apoptosis. Extracellular adenosine also inducesapoptosis of gastric cancer cells. Extracellular adenosine is transported into cells through an adenosine transporter and converted to AMP by adenosine kinase. In turn, AMP activates AMP-activated protein kinase(AMPK). AMPK is the factor responsible for caspase-independent apoptosis of GT3-TKB gastric cancer cells. Extracellular adenosine, on the other hand, induces caspase-dependent apoptosis of MKN28 and MKN45 gastric cancer cells by two mechanisms. Firstly, AMP, converted from intracellularly transported adenosine, initiates apoptosis, regardless of AMPK. Secondly, the A3 adenosine receptor, linked to Gi/Gq proteins, mediates apoptosis by activating the Gq protein effector, phospholipase Cγ, to produce inositol 1,4,5-trisphosphate and diacylglycerol, which activate protein kinase C. Consequently, the mechanisms underlying adenosine-induced apoptosis vary, depending upon gastric cancer cell types. Understand the contribution of each downstream target molecule of adenosine to apoptosis induction may aid the establishment of tailor-made chemotherapy for gastric cancer.

关键词： Adenosine Apoptosis Intrinsic pathway Extrinsic pa