检索结果-南通市图书馆

Notes in accordions-organized MXene equipped with CeO_(2) for synergistically adsorbing and catalyzing polysulfides for high-performance lithium-sulfur batteries

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第7期31卷 502-510,I0013页

作者： Xiaochuan Chen libo li Yuhang Shan da Zhou Wenjun Cui Yangmingyue zhao School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150040HeilongjiangChina

limited by the shuttle effect, the application of lithium-sulfur batteries is not impressive. As an organ layered two-dimensional(2D) material, MXene has a great electrical conductivity and high specific surface area. Meanwhile, the introduction of metal oxides can restrain the shuttle effect. Hence, this paper prepared CeO_(2)/MXene as a cathode material of li-S batteries. Ce and Ti can chemically adsorb S, and the interlayer structure of MXene can limit S while the interlayer space can alleviate volume *** discharge capacity at 0.5 C is as high as 1051.1 m Ah g^(-1), and 921.9 m Ah g^(-1) after 200 cycles. The average coulombic efficiency is 97.75%. The organized MXene with CeO_(2) like notes in accordions are new efficient materials for lithium-sulfur batteries.

关键词： Cooperative effects MXene CeO_(2) Kinetics lithium-sulfur batteries

A Charge Equalizer in Accordion-MXene-Modified Layer Leading to Spherical lithium Deposition

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第6期6卷 335-344页

作者： Yangmingyue zhao libo li da Zhou Yuhang Shan Xiaochuan Chen Wenjun Cui School of Materials Science and Chemical Engineering Harbin University of Science and TechnologyHarbin 150040China

lithium-ion batteries with polymer electrolytes(PEs)are promising candidates for high safety performance ***,conventional PEs suffer from poor compatibility and high impedance of electrolyte-electrode ***,we present a method of the interfacial modification for PEs to inhibit lithium dendrites based on the solution to the interfacial *** strategy is to improve the interfacial properties and inhibit the dendrite generation by coating a modified layer on PEs of the anode side with acetylene black(AB)and *** mixed conductive layer(MCL)can promote the generation of li3N and liF with a uniform arrangement of electrons to form a dense solid electrolyte interphase layer and the even lithium-ion deposition for improving the performance and stability of the battery during *** adding the MCL,the discharge capacity of solid lithium-ion batteries(SliBs)with lithium bis(trifluoromethanesulfonyl)imide(liTFSI)/organic modified montmorillonite(OMMT)/soybean isolate protein(SPI)/poly(vinylidene fluoride)(PVDF)(LOSP)PE from 74.2 mAh g^(-1)up to 111.1 mAh g^(-1)(AB-liTFSI/OMMT/SPI/PVDF(AB-LOSP))and 111.6 mAh g^(-1)(AB/MXene-liTFSI/OMMT/SPI/PVDF(AB/MXene-LOSP)).The polarization voltage dropped by 0.06 and 0.12 V,*** work represents a milestone in the dendrite-free SliBs with good performances.

关键词： dendrite-free interface modification lithium-ion batteries polymer electrolyte SEI film

Effect of Mn content on microstructure and properties of AlCrCuFeMnx high-entropy alloy

在线全文

学校读者我要写书评

暂无评论

China Foundry 2024年第2期21卷 147-158页

作者： Ning Wang Kai Ma Qiu-da li Yu-dong Yuan Yan-chun zhao li Feng School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals Lanzhou 730050China CNNC Nuclear Power Operation and Management Co. Ltd.Haiyan 314300ZhejiangChina

AlCrCuFeMnx(x=0,0.5,1,1.5,and 2)high-entropy alloys were prepared using the vacuum arc melting *** microstructure and mechanical properties of AlCrCuFeMnxwere analyzed and tested by XRD,SEM,TEM,nanoindentation,and electronic universal *** results indicate that the AlCrCuFeMnxhigh-entropy alloy exhibits a dendritic structure,consisting of dendrites with a BCC structure,interdendrite regions with an FCC structure,and precipitates with an ordered BCC structure that form within the ***(Mn)has a strong affinity for dendritic,interdendritic,and precipitate structures,allowing it to easily enter these *** an increase in Mn content,the size of the precipitated nanoparticles in the dendritic region initially increases and then ***,the area fraction initially decreases and then ***,the alloy’s strength and wear resistance decrease,while its plasticity *** Al Cr Cu Fe Mn1.5alloy boasts excellent mechanical properties,including a hardness of 360 HV and a wear rate of 2.4×10^(-5)mm^(3)·N^(-1)·mm^(-1).It also exhibits impressive yield strength,compressive strength,and deformation rates of 960 MPa,1,700 MPa,and 27.5%,respectively.

关键词： high-entropy alloys microstructure mechanical properties wear resistance strengthening mechanisms

在线全文

学校读者我要写书评

暂无评论

狂犬病Ⅲ级暴露者狂犬病防治知识问卷调查

职业与健康 2011年第20期27卷 2340-2341页

作者：李金萃赵大力蒲彩华孙吉远刘延庆山东省海阳市疾病预防控制中心艾滋病防制科 265100

目的了解海阳市狂犬病Ⅲ级暴露者对狂犬病防治知识的掌握程度,为制定健康教育方案提供有效依据。方法对海阳市疾病预防控制中心狂犬病处置门诊2010年来门诊接种狂犬疫苗的Ⅲ级暴露者953人进行问卷调查。结果调查者的狂犬病防治知识平均... 详细信息

目的了解海阳市狂犬病Ⅲ级暴露者对狂犬病防治知识的掌握程度,为制定健康教育方案提供有效依据。方法对海阳市疾病预防控制中心狂犬病处置门诊2010年来门诊接种狂犬疫苗的Ⅲ级暴露者953人进行问卷调查。结果调查者的狂犬病防治知识平均知晓率为78.4%。结论相关部门应加大宣传力度,扩大宣传范围,把广泛宣传普及狂犬病防治知识放在重要位置,提高广大群众的狂犬病防治知识知晓率,预防狂犬病的发生,遏制狂犬病疫情的上升趋势。

关键词：狂犬病Ⅲ级暴露者防治知识问卷调查

2016年吉林口岸入境发热人员呼吸道病毒感染监测结果分析

在线全文

学校读者我要写书评

暂无评论

中国国境卫生检疫杂志 2017年第5期40卷 349-351页

作者：邹洪久姜永莉丁旭赵大力马文晨张井巍长春国际旅行卫生保健中心吉林长春130062

目的了解吉林口岸入境发热人员呼吸道病毒感染情况。方法采集2016年吉林口岸入境发热人员咽拭子样本,用荧光PCR(RT-PCR)方法检测甲型流感病毒(IFA)、乙型流感病毒(IFB)、禽流感病毒通用型(AIV)、中东呼吸综合征冠状病毒(MERS-Co V)、呼... 详细信息

目的了解吉林口岸入境发热人员呼吸道病毒感染情况。方法采集2016年吉林口岸入境发热人员咽拭子样本,用荧光PCR(RT-PCR)方法检测甲型流感病毒(IFA)、乙型流感病毒(IFB)、禽流感病毒通用型(AIV)、中东呼吸综合征冠状病毒(MERS-Co V)、呼吸道合胞病毒(RSV)、人偏肺病毒(h MPV)、人鼻病毒(HRV)、麻疹病毒、季节性甲型流感病毒H1N1、H3N2、肠道病毒、柯萨奇病毒A6型等12种常见呼吸道病毒。结果共采集咽拭子样本497份,检出呼吸道病毒阳性72份,以人鼻病毒、乙型流感病毒居多。6个监测口岸中,圈河口岸送检的样本中阳性数最多;春、秋季节阳性数高于夏、冬季节;呼吸道病毒阳性病例主要来自朝鲜(34.72%)。结论初步掌握了吉林口岸入境发热人员感染呼吸道病毒种类,为口岸呼吸道传染病防控提供依据。

关键词：入境呼吸道病毒发热

Significance and relationship between Yes-associated protein and survivin expression in gastric carcinoma and precancerous lesions

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2009年第32期15卷 4055-4061页

作者： Chun-li da Yan Xin Jing zhao Xiang-Dong Luo The Fourth Laboratory of Cancer Institute Department of Tumor Pathology of General Surgery Institute the First Hospital of China Medical University Shenyang 11000 1 Liaoning Province China

AIM:To analyze the differences and relevance of Yes-associated protein (YAP) and survivin, and to explore the correlation and signifi cance of their expression in gastric carcinoma and precancerous ***: The PV9000 immunohistochemical method was used to detect the expression of YAP and survivin in 98 cases of normal gastric mucosa, 58 intestinal metaplasia (IM), 32 dysplasia and 98 gastric ***: The positive rates of YAP in dysplasia (37.5%) and gastric carcinoma (48.0%) were significantly higher than that in normal gastric mucosa (13.3%), P<0.01. The positive rates of survivin in IM (53.4%), dysplasia (59.4%) and gastric carcinoma (65.3%) were significantly higher than in normal gastric mucosa (11.2%), P<0.01. Survivin expression gradually increased from 41.7% in well differentiated adenocarcinoma through 58.3% in moderately differentiated adenocarcinoma to 75.6% in poorly differentiated adenocarcinoma, with significant Rank correlation, rk=0.279, P<0.01. The positive rate of survivin in gastric carcinoma of diffused type (74.6%) was significantly higher than that in intestinal type (51.3%), P<0.05. In gastric carcinoma with lymph node metastasis (76.9%), the positive rate of survivin was signifi cantly higher than that in the group without lymph node metastasis (41.2%), P<0.01. In 98 cases of gastric carcinoma, the expression of YAP and of survivin were positively correlated, rk=0.246, P<***: YAP may play an important role as a carcinogenic factor and may induce survivin expression. Detecting both markers together may help in early diagnosis of gastric carcinoma.

关键词： Apoptosis Cell proliferation Gastric cancer Immunohistochemistry Neoplastic processes Survivinprotein Yes-associated protein

Clinicopathological significance of B-cell-specific Moloney murine leukemia virus insertion site 1 expression in gastric carcinoma and its precancerous lesion

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2009年第17期15卷 2145-2150页

作者： Jing zhao Xiang-Dong Luo Chun-li da Yan Xin The Fourth Laboratory of Cancer Institute Department of Tumor Pathology of General Surgery Institute First Affiliated Hospital of China Medical University Shenyang 110001 Liaoning Province China

AIM： To explore the relation between B-cell-specific Moloney murine leukemia virus insertion site 1 （Bmi-1） expression and the clinicopathological features of gastric carcinoma （GC）.METHODS： Immunohistochemistry was used to detect the expression of Bmi-1 and ki-67. Doublelabeling staining was used to display the distribution of Bcl-2^＋/ki-67 cells in 162 cases of GC and its matched normal mucosa and precancerous ***： The positive rate of Bmi-1 expression in GC（52.5%） was significantly higher than that in normal gastric mucosa （21.6%, X^2 = 33.088, P 〈 0.05）. The Bmi-1 expression in GC was closely related with the Lauren＇s and Borrmann＇s classification and clinicalstage （X^2 = 4.400, 6.122 and 11.190, respectively, P〈 0.05）. The expression of ki-67 was related to the Borrmann＇s classification （X^2 = 13.380, P 〈 0.05）.Bcl-2 expression was correlated with the Lauren＇s classification （Z2 = 4.725, P 〈 0.05）, and the Bmi-1 expression both in GC （rk = 0.157, P 〈 0.05） and inintestinal metaplasia （rk = 0.270, P 〈 0.05）.CONCLUSION： Abnormal Bmi-1 expression in GCmay be involved in cell proliferation, apoptosis andcancerization. This marker can objectively indicate theclinicopathological characteristics of GC.

关键词： B-cell-specific Moloney murine leukemiavirus insertion site 1 Gastric carcinoma Precancerouslesion Cell proliferation Apoptosis

Moment Redistribution Effect of the Continuous Glass Fiber Reinforced Polymer-Concrete Composite Slabs Based on Static Loading Experiment

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Structural Durability & Health Monitoring 2025年第1期19卷 105-123页

作者： zhao-Jun Zhang Wen-Wei Wang Jing-Shui Zhen Bo-Cheng li De-Cheng Cai Yang-Yang Du Hui Huang Offshore Oil Engineering Co.Ltd. Tianjin300461China Department of Bridge Engineering School of TransportationSoutheast UniversityNanjing211189China

This study aimed to investigate the moment redistribution in continuous glass fiber reinforced polymer(GFRP)-concrete composite slabs caused by concrete cracking and steel bar yielding in the negative bending moment *** experimental bending moment redistribution test was conducted on continuous GFRP-concrete composite slabs,and a calculation method based on the conjugate beam method was *** composite slabs were formed by combining GFRP profiles with a concrete layer and supported on steel beams to create two-span continuous composite slab *** methods,epoxy resin bonding,and stud connection,were used to connect the composite slabs with the steel *** experimental findings showed that the specimen connected with epoxy resin exhibited two moments redistribution phenomena during the loading process:concrete cracking and steel bar yielding at the internal *** contrast,the composite slab connected with steel beams by studs exhibited only one-moment redistribution phenomenon throughout the loading *** the concrete at the internal support cracked,the bending moment decreased in the internal support section and increased in the midspan *** the steel bars yielded,the bending moment further decreased in the internal support section and increased in the mid-span *** GFRP profiles do not experience cracking,there was no significant decrease in the bending moment of the mid-span *** test specimens experienced compressive failure of concrete at the mid-span *** results showed good agreement between the calculated and experimental values of bending moments in the mid-span section and internal support *** proposed model can effectively predict the moment redistribution behavior of continuous GFRP-concrete composite slabs.

关键词： Moment redistribution GFRP-concrete composite slabs bending moment experimental study analysis model

Synthesis of steel slag ceramics: chemical composition and crystalline phases of raw materials

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2015年第3期22卷 325-333页

作者： li-hua zhao Wei Wei Hao Bai Xu Zhang da-qiang Cang School of Metallurgical and Ecological Engineering University of Science and Technology Beijing State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing

Two types of porcelain tiles with steel slag as the main raw material （steel slag ceramics） were synthesized based on the CaO-A1203-SiO2 and CaO--MgO-SiO2 systems, and their bending strengths up to 53.47 MPa and 99.84 MPa, respectively, were obtained. The presence of anorthite, a-quartz, magnetite, and pyroxene crystals （augite and diopside） in the steel slag ceramics were very different from the composition of traditional ceramics. X-ray diffraction （XRD） and electron probe X-ray microanalysis （EPMA） results illustrated that the addition of steel slag reduced the temperature of extensive liquid generation and further decreased the firing temperature. The considerable contents of glass-modifying oxide liquids with rather low viscosities at high temperature in the steel slag ceramic adobes promoted element diffusion and crystallization. The results of this study demonstrated a new approach for extensive and effective recycling of steel slag.

关键词： ceramic materials synthesis steel slag chemical composition crystalline phases solid waste recycling