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Accord插电式混合动力车用新型汽油机的开发

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汽车与新动力 2014年第1期46卷 21-28页

作者： A.Yonekawa M.Ueno o.watanabe N.Ishikawa 孙丹红

作为本田公司的下一代发动机系列,配装于Accord插电式混合动力车的新型2.0 L汽油机具有燃油耗低和排放性能好的特点。采用可变气门正时及升程电子控制系统,具有2种特定凸轮(即功率凸轮和燃油经济性凸轮)。功率凸轮作用持续期短,用于大... 详细信息

作为本田公司的下一代发动机系列,配装于Accord插电式混合动力车的新型2.0 L汽油机具有燃油耗低和排放性能好的特点。采用可变气门正时及升程电子控制系统,具有2种特定凸轮(即功率凸轮和燃油经济性凸轮)。功率凸轮作用持续期短,用于大功率输出和发动机起动;燃油经济性凸轮作用持续期长,可通过延迟进气门关闭正时,获得阿特金森循环效应。还采用了冷却废气再循环(EGR)技术,并对控制系统进行了改进,实现了低燃油耗目标。首先,能确保EGR阀前后压差的新型控制系统改善了EGR流量的控制性能。其次,改进了扭矩控制,可以预测因点火延迟引起的发动机扭矩下降。驱动性和燃油经济性在极苛刻的条件下保持原有水平。最后,采用了基于大气压力改变运行点的控制技术,即使环境发生变化,仍可保持低油耗性能。开发了混合动力车用催化转化器的新型快速预热系统。在发动机起动阶段,通过改变电机运行来控制发动机负荷,这样可有效预热催化转化器,从而使尾气排放降低到能满足特超低排放车SULEV 20标准的水平。

关键词：混合动力车汽油机燃油耗可变气门机构废气再循环

Surface modification and characterization of F-Co doped spinel LiMn_2o_4

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Rare Metals 2006年第z1期25卷 33-38页

作者： watanabe Takayuki Department of Environmental Chemistry and Engineering Tokyo Institute of Technology 4259 Nagatsuta Yokomaha 226-8502 Japan

Spinel LiCo0.09Mn1.91o3.92F0.08 as cathode material was modified with LiCoo2 by the sol-gel method, and the crystal structure, morphology and electrochemical performance were characterized with XRD, SEM, EDS, AAS and charge-discharge test in this paper. The results show that a good clad coated on parent material can be synthesized by the sol-gel method, and the materials with modification have perfect spinel structure. LiCo0.09Mn1.91o3.92F0.08 materials coated by LiCoo2 improve the stability of crystal structure and decrease the dissolution of Mn into electrolyte. With the LiCoo2 content increasing, the specific capacity and cycle performance of samples are improved. The capacity loss is also suppressed distinctly even at 55 ℃.

关键词： lithium ion batteries spinel LiMn2o4 ion doping surface coating

Synthesis and Characterization of LiCo_xMn_(2-x)o_4 Cathode Materials

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Journal of Wuhan University of Technology(Materials Science) 2007年第2期22卷 307-310页

作者：姚耀春 Takayuki watanabe Faculty of Materials and Metallurgy Engineering Kunming University of Science and Technology Department of Environmental Chemistry and Engineering Tokyo Institute of Technology4259 Nagatsuta

LiCoxMn2.04 cathode materials for lithium ion batteries were synthesized by mechanical activation-solid state reaction at 750 ℃ for 24 h in air atmosphere, and their crystal structure, morphology, element composition and electrochemical performance were characterized with XRD, SEM, ICP-AES and charge-discharge test. The experimental results show that all samples have a single spinel structure, well formed crystal shape and uniformly particle size distribution. The lattice parameters of LiCo Mn2-xo4 decrease and the average oxidation states of manganese ions increase with an increase in Co content. Compared with pure LiMn2o4, the LiCo Mn2xo4 （x=0.03-0.12） samples show a lower special capacity, but their cycling life are improved. The capacity loss of LiCo009Mn191o4 and LiCo0.1Mn1.88o4 is only 1.85% and 0.95%, respectively, after the 20th cycle. The improvement of the cycle performance is attributed to the substitution of Co at the Mn sites in the spinel structure, which suppresses the Jahn-Teller distortion and improves the structural stability.

关键词： lithium ion batteries cathode materials spinel LiMn2o4 mechanical activation-solid state method Co-doping

Applications of quantum computing for investigations of electronic transitions in phenylsulfonyl-carbazole TADF emitters

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npj Computational Materials 2021年第1期7卷 619-627页

作者： Qi Gao Gavin o.Jones Mario Motta Michihiko Sugawara Hiroshi Cwatanabe Takao Kobayashi Eriko.watanabe Yu-ya ohnishi Hajime Nakamura Naoki Yamamoto Mitsubishi Chemical Corporation Science&Innovation CenterYokohamaJapan Quantum Computing Center Keio UniversityYokohamaJapan IBM Quantum IBM Research-AlmadenSan JoseCAUSA Materials Informatics Initiative Yokkaichi Research CenterJSR CorporationYokkaichiMieJapan IBM Research-Tokyo TokyoJapan Department of Applied Physics and Physico-Informatics Keio UniversityYokohamaJapan

A quantum chemistry study of the first singlet(S_(1))and triplet(T_(1))excited states of phenylsulfonyl-carbazole compounds,proposed as useful thermally activated delayed fluorescence(TADF)emitters for organic light emitting diode(oLED)applications,was performed with the quantum Equation-of-Motion Variational Quantum Eigensolver(qEoM-VQE)and Variational Quantum Deflation(VQD)algorithms on quantum simulators and *** quantum simulations were performed with double zeta quality basis sets on an active space comprising the highest occupied and lowest unoccupied molecular orbitals(HoMo,LUMo)of the TADF *** differences in energy separations between S_(1) and T_(1)(ΔEST)predicted by calculations on quantum simulators were found to be in excellent agreement with experimental *** of 17 and 88 mHa with respect to exact energies were found for excited states by using the qEoM-VQE and VQD algorithms,respectively,to perform simulations on quantum devices without error *** utilizing state tomography to purify the quantum states and correct energy values,the large errors found for unmitigated results could be improved to differences of,at most,4 mHa with respect to exact ***,excellent agreement could be found between values ofΔEST predicted by quantum simulations and those found in experiments.

关键词： quantum excited occupied

Performance evaluation of a water erosion tracer using plot-scale experiments and process-based modeling

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International Soil and Water Conservation Research 2023年第4期11卷 622-632页

作者： João M.Villela Jamil A.A.Anache Alex M.watanabe Dennis C.Flanagan Edson C.Wendland Silvio Crestana EMBRAPA-Brazilian Agricultural Research Corporation LNNA-National Laboratory of Nanotechnology for AgrobusinessSt.XV de NovembroSão CarlosSP13560-970Brazil University of São Paulo(USP) São Carlos School of Engineering.Graduate Program in Environmental Engineering Sciences(PPG-SEA)Av.Trabalhador São-CarlenseCxP.359São CarlosSP13566590Brazil Department of Hydraulics and Sanitation São Carlos School of Engineering(EESC)University of São Paulo(USP)CxP.359São CarlosSP13566-590Brazil Federal University of Mato Grosso Do Sul CxP.549Campo Grande.MS.79070-900Brazil USDA-Agricultural Research Service National Soil Erosion Research Laboratory275 S.Russell StWest LafayetteIN47907USA

Socioeconomic and environmental losses caused by water erosion have highlighted the importance of quantifying and understanding the dynamics of soil redistribution in the landscape to develop effective soil management *** methods are applied to estimate erosion/deposition rates and identify sources of sediments,among them,the one that uses rare earth elements(REE)as a tracer stands ***,an alternative not yet explored that can benefit the accuracy of the estimates provided by the method is using a tracer containing a chemical signature composed of more than one *** present study aimed to evaluate the performance of a new water erosion tracer based on montmoril-lonite labeled with rare earth elements(La40-MMT).The innovative aspects of this La40-MMT tracer include its highly stable multi-chemical signature(Nd^(3+),La^(3+),and Pr^(3+)),which enhances tracer detection in the environment,and its low production cost due to the use of an industrial residue in the synthesis *** tracer was evaluated for a typical soil of the Cerrado biome,using a natural rainfall field-scale plot-NRFP(5 m × 20 m)and a physical predictive erosion model(WEPP).The results showed that the La40-MMT tracer could be used to estimate erosion/deposition rates,with agreement between the values observed with the tracer and the WEPP ***,this study confirmed the great potential of La40-MMT as a tool to identify patterns of soil redistribution at the field scale and aid in the validation of erosion models.

关键词： Soil erosion Tracer Rare earth elements Deposition Sediment source WEPP Model

Surface treatment of titanium dental implant with H2o2 solution

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International Journal of Minerals,Metallurgy and Materials 2020年第9期27卷 1281-1286页

作者： Mohammad Khodaei Kamran Amini Alireza Valanezhad Ikuya watanabe Department of Materials Science and Engineering Golpayegan University of TechnologyGolpayegan ***Iran Center for Advanced Engineering Research Majlesi BranchIslamic Azad UniversityIsfahan 196151194Iran Department of Dental and Biomedical Materials Science Graduate School of Biomedical SciencesNagasaki University1-7-1 SakamotoNagasaki 852-8588Japan

The surface treatment is important for titanium and its alloys as promising candidates for dental implantation due to their bioinert *** surface samples were modified using H2o2 solution at different times up to 72 h to boost their *** to the results of the field emission scanning electron microscopy test,some nanostructures are formed on the surface of treated titanium samples and increased in size by increasing the time of treatment up to 24 *** 24 h of application,the sharpness of nanostructures decreased and the micro-cracks and discontinuity in the coating surface *** results of the X-ray diffraction study and Raman spectroscopy revealed that anatase(Tio2)was formed on the surface of treated titanium *** peak intensity of Raman spectroscopy increased with an improvement in treatment time of up to 24 h and then decreased due to the discontinuity of the *** wettability and ability to form apatite were reached at 6 h of *** is clear that the treatment time has a significant effect on the surface treatment of titanium using the H2o2 solution.

关键词： titanium implant surface treatment hydrogen peroxide anatase dental implant

THEoRETICAL ASPECTS oF ELECTRoN CAPTURE BY C6+ AND o8+ FRoM H,He AND H2

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原子与分子物理学报 1991年第2期 1796-1809页

作者： Tsutomu watanabe Atomic Processes Laboratory Saitama-Ken 351-01 Japan The Institute of Physical and Chemical Research (RIKEN) Hirosawa Wako-shi

Many theoretical approaches to electron capture by C6+, a nd o8+fromthe targets H,He and H2are discussed from the practical stand point at thepresent *** validity of several representative methods for the calcul-ation of total and state selective partial cross sections is given. For the total cross section in many theoretical methods can be appliedand give reasonable *** the state selective partial cross section for adominant channel at low impact velocities manylevel coupled channel calcul-ations can be used and give reliable results,if it belongs to a dominant cha-nnel.

关键词： In THEoRETICAL ASPECTS oF ELECTRoN CAPTURE BY C AND o FRoM H,He AND H2

Synthesis of affinity column of phosphatidylinositol-3,4-diphosphate

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Chinese Journal of Chemistry 1997年第6期15卷 556-561页

作者： oZAKI Shoichiro.watanabe Yutaka oGASAWARA Tomio Department of Chemistry Shandong University Jinan Shandong 250100 ChinaDepartment of Applied ChemistryFaculty of EngineeringEhime UniversityMatsuyama790JapanDepartment of Applied ChemistryFaculty of EngineeringEhime UniversityMatsuyama790Japan

Phosphatidylinositol polyphosphates (PIPx) are related with tyrosine kinase activation, cell proliferation and carcinogenesis. In order to investigate the action mechanism of PIPx, it is desirable to synthesize affinity column of PI-3,4-P-2, which is expected to be able to isolate the binding proteins of PI-3,4-P-2. Thyramine reacted with CH-Sepharose 4B giving column 13. The p-amino group of 3'-(1',2'-distearoyl-glyceryl)-1-(2-p-aminobenzyl)-3,4-di-o-phosphoryl-myo-inosityl phosphate (12) was diazotized, then diazo-coupled with column 13 to give PI-3,4-P-2 affinity column 14. This PI-3,4-P-2 affinity column is an effective tool to pick up binding proteins of PI-3,4-P-2.

关键词： phosphatydylinositol-3,4-diphosphate binding protein inositol PI-3,4-P-2-affinity

Serological surveillance for SARS-CoV-2 antibodies among students,faculty and staff within a large university system during the pandemic

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World Journal of Virology 2025年第1期14卷 99-107页

作者： Marcos G Pinheiro Gabriela G o Alves Maria Eduarda R Conde Sofia L Costa Regina C S Sant’Anna Isa M F Antunes Mônica C Carneiro Fabio S Ronzei Julia C Scaffo Felipe R Pinheiro Lialyz S Andre Helvecio C Povoa Valéria T Baltar Fabíola Giordani Eduarda S Hemerly Gisele C Alexandre Karla C de Paula Márcio.watanabe Antonio Claudio L da Nóbrega Jackeline Christiane P Lobato Fabio Aguiar-Alves Laboratory of Molecular Epidemiology and Biotechnology Rodolpho Albino University LaboratoryFluminense Federal UniversityNiterói 24241000Rio de JaneiroBrazil Estácio de SáUniversity Nova Friburgo 28611135Rio de JaneiroBrazil Pathology Program Medicine schoolFluminense Federal UniversityNiterói 24070090Rio de JaneiroBrazil Department of Pharmaceutical Sciences Lloyd L.Gregory School of PharmacyPalm Beach Atlantic UniversityWest Palm BeachFL 33401United States Health Institute of Nova Friburgo Fluminense Federal UniversityNova Friburgo 28613001Rio de JaneiroBrazil Department of Epidemiology and Biostatistics Institute of Collective Health(ISC)Fluminense Federal UniversityNiterói 24033900Rio de JaneiroBrazil Institute of Physical Education Fluminense Federal UniversityNiterói 24020005Rio de JaneiroBrazil Department of Statistics Fluminense Federal UniversityNiterói 24210200Rio de JaneiroBrazil Department of Physiology and Pharmacology Fluminense Federal UniversityNiterói 24210130Rio de JaneiroBrazil

BACKGRoUND At the end of December 2019,the world faced severe acute respiratory syndrome-coronavirus 2(SARS-CoV-2),which led to the outbreak of coronavirus disease 2019(CoVID-19),associated with respiratory *** virus has shown significant challenges,especially for senior citizens,patients with other underlying illnesses,or those with a sedentary *** tests conducted early on have helped identify how the virus is transmitted and how to curb its *** study hypothesis was that the rapid serological test for SARS-CoV-2 antibodies could indicate the immunoreactive profile during the CoVID-19 pandemic in a university *** To conduct active surveillance for serological expression of anti-SARS-CoV-2 antibodies in individuals within a university setting during the CoVID-19 *** This sectional study by convenience sampling was conducted in a large university in Niteroi-RJ,Brazil,from March 2021 to July *** study population consisted of students,faculty,and administrative staff employed by the university.A total of 3433 faculty members,60703 students,and 3812 administrative staff were invited to *** were gathered through rapid serological tests to detect immunoglobulin(Ig)M and IgG against ***χ²or Fisher's exact test was used to conduct statistical analysis.A 0.20 significance level was adopted for variable selection in a multiple logistic regression model to evaluate *** A total of 1648 individuals were enrolled in the *** proportion of CoVID-19 positivity was 164/1648(9.8%).The adjusted logistic model indicate a positive association between the expression of IgM or IgG and age[odds ratio(oR)=1.16,95%CI:1.02-1.31](Po had been in contact with a CoVID-19-positive case(oR=3.49,95%CI:2.34-5.37)(Pose who had received the CoVID-19 vaccine(oR=2.33,95%CI:1.61-3.35)(Pocial isolation(oR=0.59,95%CI:0.41-0.84)(Pood of sho

关键词： Serological surveillance SARS-CoV-2 antibodies CoVID-19 Serological rapid test Risk factors for CoVID-19