检索结果-南通市图书馆

中国兽药杂志 1989年第4期23卷 43-44页

作者： y.goto 朱其太

初步研制一种灭活 Chuzan 病毒疫苗已完成。病毒于 BHK—21细胞培养中大量增殖。用福尔马林处理后的培养液对牛和豚鼠有很好的免疫原性。攻毒后免疫过的牛未发生白细胞减少及病毒血症,而那些对照牛则发生了这些病状。

关键词： Chuzan 病毒牛灭活疫苗

3,4,5-三氟化苯基液晶的物理特性(英文)

在线全文

学校读者我要写书评

暂无评论

液晶与显示 1993年第3期 1-7页

作者： S.Sawada,H.yamamooi,y.Kubo,F.Terashima,y.goto Japan Ckisgo Petrockemical Co. 5-1 Goi Ichikara China Japan Ckisgo Petrockemical Co. 5-1 Goi Ichikara China Ckisgo Petrockemical Co. Japan Ckisgo Petrockemical Co. 5-1 Goi Ichikara China Japan 5-1 Goi Ichikara China Japan Ckisgo Petrockemical Co. 5-1 Goi Ichikara China

本文制备了3,4,5-三氟比末端基液晶。这种液晶具有电阻率高,△ε值大,△n值低,弹性常数小以及相对低的粘滞系数等特性。种新的液晶材料在有源矩阵显示中可实现高对比度和低驱动电压。

关键词：通讯新闻晶体液晶

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

3，4，5-三氟化苯基液晶的物理特性

液晶通讯 1993年第3期1卷 1-7页

作者： S.Sawada H.yamamooi y.Kubo F.Terashima y.goto ChissoPetrochemicalCo. 5-1GoiLchiharaChibaJapan

本文制备了3，4，5-三氟比末端基液晶。这种液晶具有电阻率高，△ε值大，△η值低，弹性常数小以及相对低的粘滞系数等特性。种新的液晶材料在有源矩阵显示中可实现高对比度和低驱动电压。

关键词：高对比度有源矩阵液晶材料驱动电压端基显示物理特性苯基粘滞系数弹性常数

新一代2GR-FKS/FXS 3.5L V6直喷汽油机的开发

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

汽车与新动力 2016年第5期48卷 20-23页

作者： J.Matsui H.Koyama y.goto H.Kawai 陈佳

为应对日趋严格的燃油经济性和越来越高的排放目标,采用现阶段发动机领域的新技术开发出新一代2GR-FKS/FXS发动机。基于2GR-FE发动机广受好评的动力性和燃油经济性,对2GR-FKS/FXS发动机的主要零部件进行了重新设计。开发的主要目标是:(1... 详细信息

为应对日趋严格的燃油经济性和越来越高的排放目标,采用现阶段发动机领域的新技术开发出新一代2GR-FKS/FXS发动机。基于2GR-FE发动机广受好评的动力性和燃油经济性,对2GR-FKS/FXS发动机的主要零部件进行了重新设计。开发的主要目标是:(1)优异的动力性;(2)最大限度地提高热效率,全面符合各国燃油经济性和排放法规要求的环保性能;(3)大幅度减轻运动件的质量,提高V6发动机的响应性。为实现上述互相对立的目标,发动机开发时使用了改进型的D-4S燃油喷射系统,可选择使用直接喷射和进气道喷射,同时,还采用了其他先进技术,如带中间位置锁止机构的可变气门正时技术和排气歧管冷却系统。

关键词：直喷汽油机阿特金森循环可变压力燃油供给系统排气歧管一体式气缸盖

Effectiveness of antibiotic prophylaxis for acute esophageal variceal bleeding in patients with band ligation: A large observational study

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2024年第3期30卷 238-251页

作者： Chikamasa Ichita Sayuri Shimizu Tadahiro goto Uojima Haruki Naoya Itoh Masao Iwagami Akiko Sasaki Gastroenterology Medicine Center Shonan Kamakura General HospitalKamakura 247-8533KanagawaJapan Department of Health Data Science Yokohama City UniversityYokohama 236-0027KanagawaJapan TXP Research TXP Medical Co.Ltd.Chiyoda-ku 101-0042TokyoJapan Department of Clinical Epidemiology and Health Economics School of Public HealthThe University of TokyoBunkyo-ku 113-0033TokyoJapan Department of Genome Medical Sciences Project Research InstituteNational Center for Global Health and MedicineIchikawa 272-8516ChibaJapan Division of Infectious Diseases Aichi Cancer CenterNagoya 464-8681AichiJapan Department of Health Services Research Institute of MedicineUniversity of TsukubaTsukuba 305-8575IbarakiJapan

BACKGROUND Esophageal variceal bleeding is a severe complication associated with liver cirrhosis and typically necessitates endoscopic *** current standard treatment is endoscopic variceal ligation(EVL),and Western guidelines recom-mend antibiotic prophylaxis following ***,given the impro-vements in prognosis for variceal bleeding due to advancements in the management of bleeding and treatments of liver cirrhosis and the global concerns regarding the emergence of multidrug-resistant bacteria,there is a need to reassess the use of routine antibiotic prophylaxis after *** To evaluate the effectiveness of antibiotic prophylaxis in patients treated for *** We conducted a 13-year observational study using the Tokushukai medical database across 46 *** were divided into the prophylaxis group(received antibiotics on admission or the next day)and the non-prophylaxis group(did not receive antibiotics within one day of admission).The primary outcome was composed of 6-wk mortality,4-wk rebleeding,and 4-wk spontaneous bacterial peritonitis(SBP).The secondary outcomes were each individual result and in-hospital mortality.A logistic regression with inverse probability of treatment weighting was used.A subgroup analysis was conducted based on the Child-Pugh classification to determine its influence on the primary outcome measures,while sensitivity analyses for antibiotic type and duration were also *** Among 980 patients,790 were included(prophylaxis:232,non-prophylaxis:558).Most patients were males under the age of 65 years with a median Child-Pugh score of *** composite primary outcomes occurred in 11.2%of patients in the prophylaxis group and 9.5%in the non-prophylaxis *** significant differences in outcomes were observed between the groups(adjusted odds ratio,1.11;95%confidence interval,0.61-1.99;P=0.74).Individual outcomes such as 6-wk mortality,4-wk rebleeding,4-wk onset of SBP,and in-hospital mo

关键词： Esophageal varices Endoscopic hemostasis Antibiotic prophylaxis Liver cirrhosis Inverse probability of treatment weighting

Ren-integrable and ren-symmetric integrable systems

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2024年第3期76卷 62-69页

作者： S y Lou School of Physical Science and Technology Ningbo UniversityNingbo315211China

A new type of symmetry,ren-symmetry,describing anyon physics and corresponding topological physics,is ***-symmetry is a generalization of super-symmetry which is widely applied in super-symmetric physics such as super-symmetric quantum mechanics,super-symmetric gravity,super-symmetric string theory,super-symmetric integrable systems and so *** and Grassmann numbers are,in some sense,dual conceptions,and it turns out that these conceptions coincide for the ren situation,that is,a similar conception of ren-number(R-number)is devised for *** particular,some basic results of the R-number and ren-symmetry are exposed which allow one to derive,in principle,some new types of integrable systems including ren-integrable models and ren-symmetric integrable *** examples of ren-integrable KdV-type systems and ren-symmetric KdV equations are explicitly given.

关键词： symmetries integrable systems anyon physics extended supersymmetry ren-symmetry

High-temperature corrosion of sintered RE_(2)Si_(2)O_(7)(RE=yb and Ho)environmental barrier coating materials by volcanic ash

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2024年第7期31卷 1628-1638页

作者： Ayahisa Okawa Son Thanh Nguyen Tadachika Nakayama Thi-Mai-Dung Do Hisayuki Suematsu Shu yin Takuya Hasegawa Tsuneo Suzuki Takashi goto Koichi Niihara Institute of Multidisciplinary Research for Advanced Materials Tohoku UniversitySendai 980-8577Japan Department of Creative Engineering National Institute of TechnologyKushiro 084-0916Japan Extreme Energy-Density Research Institute Nagaoka University of TechnologyNagaoka 940-2188Japan Advanced Institute for Materials Research(WPI-AIMR) Tohoku UniversitySendai 980-8577Japan

Rare-earth silicates are promising environmental barrier coatings(EBCs)that can protect SiC_(f)/Si C_(m)substrates in next-genera tion gas turbine ***,RE_(2)Si_(2)O_(7)(RE=yb and Ho)shows potential as an EBC due to its coefficient of thermal expansion(CTE)compatible with substrates and high resistance to water vapor *** target operating temperature for next-generation tur bine blades is 1400°*** is inevitable during adhesion to molten volcanic ash,and thus,understanding the corrosion behavior o the material is crucial to its *** study investigates the high-temperature corrosion behavior of sintered RE_(2)Si_(2)O_(7)(RE=yb and Ho).Samples were prepared using a solid-state reaction and hot-press *** were then exposed to volcanic ash at 1400°C for 224,and 48 *** 48 h of exposure,volcanic ash did not react with yb_(2)Si_(2)O_(7)but penetrated its interior,causing *** Ho_(2)Si_(2)O_(7)was partially dissolved in the molten volcanic ash,forming a reaction zone that prevented volcanic ash melts from penetrating the *** increasing heat treatment time,the reaction zone expanded,and the thickness of the acicular apatite grains increased The Ca:Si ratios in the residual volcanic ash were mostly unchanged for yb_(2)Si_(2)O_(7)but decreased considerably over time for Ho_(2)Si_(2)O_(7).Th Ca in volcanic ash was consumed and formed apatite,indicating that RE^(3+)ions with large ionic radii(Ho>yb)easily precipitated apatit from the volcanic ash.

关键词： environmental barrier coating volcanic ash rare-earth disilicate corrosion

Distinct Electrical and Mechanical Responses of a Cu-10Fe Composite Prepared by Hot-Pressed Sintering and Post Treatment

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 255-265页

作者： X.y.yue S.y.Peng X.Zhang C.N.He y.Z.Tian Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Materials Science and EngineeringNortheastern UniversityShenyang110819China School of Materials Science and Engineering and Tianjin Key Laboratory of Composite and Functional Materials Tianjin UniversityTianjin300350China Research Centre for Metallic Wires Northeastern UniversityShenyang110819China

A Cu-10wt%Fe composite was prepared through hot-pressed sintering,and the material was subsequently solution *** hot-pressed sintered and solution treated materials were rolled and *** precipitation behavior and performance changes were systematically studied by using scanning electron microscopy and transmission electron *** contrast to the hot-pressed sintered specimen,the solution treatment significantly affects the thermal stability and properties of the Cu-10wt%Fe *** Cu-10wt%Fe composite was prepared after solid solution,cold rolling and aging at 773 K for 1 h,and it obtained excellent tensile strength of 494 MPa,uniform elongation of 16.3%,electrical conductivity of 51.1%IACS and softening temperature of 838 *** for the distinct difference in thermal stability and properties between hot-pressed sintered and solution treated specimens were *** findings provide a theoretical basis for designing high-performance Cu-based in-situ composites by post treatment.

关键词： Cu-Fe composite Hot-pressed sintering Thermal stability Strength Electrical conductivity

Construction of 2D/2D Ti_(3)C_(2)T_(x)MXene/CdS heterojunction with photothermal effect for efficient photocatalytic hydrogen production

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2024年第4期171卷 1-9页

作者： T.y.Huang Z.yang S.y.yang Z.H.Dai y.J.Liu J.H.Liao G.y.Zhong Z.J.Xie y.P.Fang S.S.Zhang Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern AgricultureCollege of Materials and EnergySouth China Agricultural UniversityGuangzhou 510643China School of Physics and Optoelectronics South China University of TechnologyGuangzhou 510640China School of Chemical Engineering and Energy Technology Guangdong Provincial Key Laboratory of Distributed Energy SystemsDongguan University of TechnologyDongguan 523808China

The insensitivity of semiconductors to visible and infrared light is a key constraint on the utilization of light energy in photocatalytic *** photocatalysts with full-spectrum absorption through surface engineering is an effective approach to fully harnessing light energy in semiconductor ***,a novel stable Ti_(3)C_(2)T_(x)MXene/CdS heterojunction catalyst is obtained by in-situ epitaxial growth of two-dimensional(2D)CdS nanosheets on 2D MXene interface via a solvothermal *** exceptional light absorption properties of MXene confer outstanding full-spectrum driven photocat-alytic hydrogen evolution capability upon the heterogeneous *** unique 2D/2D structure effectively mitigated the recombination of photogenerated carriers,enhancing the photocatalytic performance of the ***,the composite catalyst exhibits a significantly higher surface temperature of 80.4℃under visible light irradiation at an intensity of 0.1 W/cm^(2),which is 1.84 times higher than that of *** irradiation of visible and near infrared light,the composite catalyst with photothermal ef-fect demonstrates a remarkable hydrogen evolution rate of 65.4 mmol g^(-1)h^(-1),which is 7.2 times higher than that of CdS *** study introduces a novel approach for constructing full-spectrum absorption catalysts and expands the application of the photothermal effect in photocatalytic hydrogen evolution research.

关键词： Two-dimensional structure Heterostructure Photothermal effect Photocatalyst Hydrogen evolution

A perspective on age-related changes in cell environment and risk of neurodegenerative diseases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第4期19卷 719-720页

作者： Alice y.Liu Department of Cell Biology and Neuroscience Rutgers State University of New JerseyPiscatawayNJUSA

“Age-related neurodegenerative disease”underscores human age as the primary risk factor for disease development:Alzheimer’s,Parkinson’s,and Huntington’s disease(HD)as *** for the age-dependent delay in disease manifestation,in particular for autosomal dominant forms of the disease,and the underlying cause(s)of specific neuron dysfunction and death to manifest as memory loss,anxiety,depression,and agitation in disease subjects remain *** are interested in understanding age-related changes in cell environment that can modulate the structure,function,aggregation.

关键词： Huntington Alzheimer death