检索结果-南通市图书馆

The Influence of Communicative Teacher Talk on College Students＇ Interlanguage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sino-US English Teaching 2011年第9期8卷 571-576页

作者： qu ying Harbin Engineering University Harbin China

In the process of L2 （second language） learning, students tend to meet the problem of interlanguage--a transitional language system existing between target language and learners＇ mother tongue, which will severely affect students＇ image of language. Teacher talk as a special language closely related to students＇ English learning, exerts unignorable influence on students＇ interlanguage. This paper will start from the analyzing four types of teacher talk, and go further to deal with the relationship of communicativeness in teacher talk and interlanguae. Then it ends by proposing some points that teacher talk should note.

关键词： interlanguage teacher talk communicativeness

The Strengths and Weaknesses of Mini-Class Model for Chinese College Students

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Sino-US English Teaching 2012年第7期9卷 1306-1311页

作者： qu ying Harbin Engineering University Harbin China

When it comes to the practical use of English, the traditional college English class, which has big size and uses lecture-style teaching, has increasingly showed its disadvantages. The English Department of Harbin Engineering University has initiated a mini-class model in recent years, which has received positive responses from both teachers and students who have experienced the class. By comparing the lecture-style class with mini-class, this paper will introduce the strengths and weaknesses of mini-class according to the author＇s observation of the class as well as the feedbacks from teachers and students. As is found out, its strengths far outweigh its weaknesses, and therefore the model is highly recommended for college English class in other schools

关键词： strengths weaknesses mini-class model

Economic potentials of energy storage technologies in electricity markets with renewables

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy Storage and Saving 2023年第1期2卷 370-391页

作者： Yunpeng Xiao Wenqi Wu Xiuli Wang ying qu Jianglong L School of Electrical Engineering Xi’an Jiaotong UniversityXi’an710049China School of Economics and Finance Xi’an Jiaotong UniversityXi’an710061China

The increasing penetration of renewables in power systems urgently entails the utilization of energy storage *** the development of energy storage technologies depends highly on the profitability in electricity markets,to evaluate the economic potentials for various types of energy storage technologies under the compre-hensive market environment is of great *** this end,this study aims at conducting a quantitative analysis on the economic potentials for typical energy storage technologies by establishing a joint clearing model for electric energy and ancillary service(AS)markets considering the operating features of energy storage systems(ESSs).Furthermore,a test system is adopted for numerical analysis that accurately represents for the real-world operation characteristics of power systems in China,with which the market prices,and operation schedules and profitability of ESSs are comparatively *** proposed methodology and results could provide benefi-cial references for the modifications on electricity markets and the development of ESSs towards the increasing penetration of renewables in power systems.

关键词： Electricity market Ancillary service market Energy storage technology Economic potentials Power systems with renewables

Camptothecin@HMSNs/thermosensitive hydrogel composite for applications in preventing local breast cancer recurrence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2018年第12期29卷 1819-1823页

作者： Jing Wu ying qu Kun Shi Bingyang Chu Yanpeng Jia Xue Xiao Qianjun He Zhiyong Qian Department of Hematology and Research Laboratory of Hematology State Key Laboratory of BiotherapyWest China HospitalSichuan University and Collaborative Innovation Center Department of Gynecology and Obstetrics West China Second University HospitalSichuan University Key Laboratory of Birth Defects and Related Diseases of Women and Children Sichuan UniversityMinistry of Education National-Regional Key Technology Engineering Laboratory for Medical Ultrasound Guangdong Key Laboratory for Biomedical Measurements and Ultrasound ImagingSchool of Biomedical EngineeringShenzhen University

Camptothecin has a strong tumor killing ability for a variety of tumor cells with its special anti-cancer mechanism including the breast cancer. However, because of its infinite hydrophobic property, its clinical application has been greatly limited. Early prevention of loco regional recurrence for the breast cancer is critical for patients who have undergone breast-conserving therapy. In the study,CPT was used for the inhibition of the recurrence after the operation. The hollow mesoporous silica nanoparticles were used as the carrier to improve the hydrophilic property and increase its bioavailability with the high loading capacity. The ability of the cellular uptake and antitumor activity was increased. Hydrogel was the ideal carrier for local therapy, so the CPT@HMSNs were loaded into the PLEL thermo sensitive hydrogel to be injected into the tumor sites after the tumor was resected. The recurrence was reduced in the group of CPT-HMSNs-PLEL and the side effect of CPT was decreased. They exhibit distinguished potential as drug carrier for local delivery.

关键词： Camptothecin Hollow mesoporous silica nanoparticles Breast cancer recurrence Thermosensitive hydrogel Local delivery

Reinforcement of High Impact Polystyrene by Aramid Nanoparticle Fillers Prepared via an In situ Bottom-up Approach

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2024年第8期42卷 1167-1176页

作者： Xiang-Jun Gong Zhi-Ping Zhao Chang-Mei Sun ying Zhang Rong-Jun qu ying Wang School of Chemistry and Materials Science Ludong UniversityYantai 264025China

In this work,aramid nanoparticles(ANPs)were prepared in dimethyl formamide(DMF)solution containing high impact polystyrene(HIPS)via a bottom-up *** electron microscopy(TEM)images showed that the obtained ANPs were evenly distributed in the HIPS matrix without any *** composition of the ANPs,i.e.,poly(p-phenyl-p-phenylenediamine)(PPTA),was confirmed by Fourier transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS)and X-ray diffractometer(XRD).The ANP/HIPS composites,obtained after ethanol precipitation,were added to neat HIPS as fillers to fabricate ANP/HIPS composite *** surface roughness and the glass transition temperature(T_g)of the sheets were characterized by atomic force microscope(AFM)and differential scanning calorimetry(DSC),*** with neat HIPS,the mechanical properties of the composite sheet were significantly improved,and the Young's modulus increased from 246.55 MPa to 2025.12 MPa,the tensile strength increased from 3.07 MPa to 29.76 MPa,and the toughness increased from 0.32 N/mm^2 to 3.92 N/mm^2,with an increase rate of 721%,869%and 1125%,***,the thermal stability of the composites improved with the increase in ANP content.

关键词： High impact polystyrene PPTA nanoparticle Reinforce Mechanical property

Antifibrotic effect of N-acetyl-seryl-aspartyl-lysyl-proline on bile duct ligation induced liver fibrosis in rats

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2012年第37期18卷 5283-5288页

作者： Lei Zhang Lei-Ming Xu Yuan-Wen Chen Qian-Wen Ni Min Zhou Chun-ying qu Yi Zhang Digestive Endoscopic Diagnosis and Treatment Center Xinhua HospitalSchool of MedicineShanghai Jiaotong UniversityShanghai 200092China

AIM:To investigate the preventive effect of N-acetyl-seryl-aspartyl-lysyl-proline (AcSDKP) on bile duct ligation (BDL)induced liver fibrosis in rats. METHODS:Liver fibrosis in rats was induced by BDL and AcSDKP was infused subcutaneously for 2 wkvia a osmotic minipump (Alzet 2ML4) immediately after BDL operation. After scarifying, serum and liver specimens were collected. Hematoxylin and eosin staining, Sirius red staining, enzyme linked immunosorbent assay, Western blot or real-time polymerase chain reaction were used to determinate liver functions, histological alterations, collagen deposition, mRNA expression of markers for fibroblasts, transforming growth factor-β1 (TGF-β1) and bone morphogenetic protein-7 (BMP-7). RESULTS:When compared to model rats, chronic exogenous AcSDKP infusion suppressed profibrogenicTGF-β1 signaling, α-smooth muscle actin positivity (α-SMA), fibroblast specific protein-1 (FSP-1) staining and collagen gene expression. Col Ⅰ, Col Ⅲ, matrix metalloproteinase-2, tissue inhibitors of metallopro-teinase-1 and tissue inhibitors of metalloproteinase-2 mRNA expressions were all significantly downregulated by AcSDKP infusion (2.02 ± 1.10vs 14.16 ± 6.50, 2.02 ± 0.45vs 10.00 ± 3.35, 2.91 ± 0.30vs 7.83 ± 1.10, 4.64 ± 1.25 vs 18.52 ± 7.61, 0.46 ± 0.16 vs 0.34 ± 0.12, respectively, P < 0.05). Chronic exogenous AcSDKP infusion attenuated BDL-induced liver injury, inflammation and fibrosis. BDL caused a remarkable increase in alanine transaminase, aspartate transaminase, total bilirubin, and prothrombin time, all of which were reduced by AcSDKP infusion. Mast cells, collagen accumulation, α-SMA, TGF-β1, FSP-1 and BMP-7 increased. The histological appearance of liver specimens was also improved. CONCLUSION:Infusion of exogenous AcSDKP attenu-ated BDL-induced fibrosis in the rat liver. Preservation of AcSDKP may be a useful therapeutic approach in the management of liver fibrosis.

关键词： N-acetyl-seryl-aspartyl-lysyl-proline Liverfibrosis Transformating growth factor-β1 α -smoothmucle actin Bone morphological protein-7 Fibroblastspecific protein-1 Epithelial-mesenchymal transition

Steeply dipping structural target-oriented viscoacoustic least-squares reverse time migration and its application

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Geophysics 2022年第4期19卷 528-536,604页

作者： Chen Kang Han Song Ran Qi Wen Long Zhang Guang-Zhi qu ying-Ming School of Geosciences China University of Petroleum(East China)Qingdao 266580China China National Petroleum Corporation Southwest Oil and Gas Field Branch Exploration and Development Research Institute Chengdu 610021China National Key Laboratory of Deep Oil&Gas China University of Petroleum(East China)Qingdao 266580China

Steeply dipping structural imaging is a significant challenge because surface geophones cannot obtain seismic primary reflection wave information from steeply dipping *** waves with a significant amount of steeply dipping information can be used to improve the imaging eff ect on steeply dipping *** attenuation leads to amplitude loss and phase distortion of seismic waves,and ignoring this attenuation during imaging can cause blurring of migration *** this study,we proposed a steeply dipping structural target-oriented viscoacoustic least-squares reverse time migration(LSRTM)method with prismatic and primary waves as an objective function based on the viscous wave equation,while deriving Q-compensated wavefield propagation and joint operators of prismatic and primary waves and the Q-compensated demigration *** examples on synthetic and field data verified the advantages of the proposed viscoacoustic LSRTM method of joint primary and prismatic waves over conventional viscoacoustic LSRTM and non-compensated LSRTM when using attenuating observed data.

关键词： Q-compensation prismatic wave least-squares reverse time migration steeply dipping structure

柯萨奇病毒A组10型VP1蛋白线性中和表位的筛选和鉴定

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

激光生物学报 2024年第2期33卷 160-166页

作者：甘燕媚何韵怡瞿颖吴岳刘启亮刘洪波桂林医学院第二附属医院检验科桂林541199 桂林医学院医学检验学院桂林541199 桂林医学院智能医学与生物技术学院桂林541199

柯萨奇病毒A组10型(CV-A10)是引起手足口病(HFMD)的常见病原体之一。应用重叠肽法筛选出覆盖CV-A10全长VP1区氨基酸序列的39条候选表位肽段,以间接酶联免疫吸附试验(ELISA)及微量中和抑制试验验证。结果发现,候选表位P6(CV-A10 VP1区第3... 详细信息

柯萨奇病毒A组10型(CV-A10)是引起手足口病(HFMD)的常见病原体之一。应用重叠肽法筛选出覆盖CV-A10全长VP1区氨基酸序列的39条候选表位肽段,以间接酶联免疫吸附试验(ELISA)及微量中和抑制试验验证。结果发现,候选表位P6(CV-A10 VP1区第39~53位氨基酸)与CV-A10全病毒抗血清具有高反应性,且在3.91μg/mL的稀释质量浓度时仍具有中和抑制作用,为潜在中和表位。用P6肽免疫小鼠制备相应的抗血清,并以微量中和试验验证其保护能力,结果显示,P6抗血清的几何平均中和效价为1:8.97,可确定P6为CV-A10的中和表位。为了解P6序列在CV-A10型内的保守性,将P6的氨基酸序列与CV-A10各基因型代表株进行比对分析,结果显示,P6在CV-A10型内高度保守,表明P6为CV-A10的广谱性中和表位,可应用于CV-A10表位疫苗的研发。本研究旨在筛选鉴定CV-A10 VP1蛋白上的线性中和表位,为CV-A10表位疫苗的研发和HFMD的防控奠定基础。

关键词：柯萨奇病毒A组10型 VP1蛋白线性中和表位疫苗手足口病

基于OBE理念的食品专业大学生创新创业指导模式研究

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

绿色包装 2024年第9期 54-56页

作者：张春芝韩齐曲颖张丽媛曹荣安黑龙江八一农垦大学食品学院黑龙江大庆163319

多年来,国家一直高度重视高校的创新创业教育工作。作为创新创业型人才的重要培养基地,高等学校承担着关键性作用。为了构建基于OBE理念的食品专业大学生创新创业指导体系,本文从食品专业大学生创新创业项目的申报、线上线下项目的指导... 详细信息

多年来,国家一直高度重视高校的创新创业教育工作。作为创新创业型人才的重要培养基地,高等学校承担着关键性作用。为了构建基于OBE理念的食品专业大学生创新创业指导体系,本文从食品专业大学生创新创业项目的申报、线上线下项目的指导途径、校企结合指导形式等方面进行探讨,形成完整的指导模式。

关键词： OBE理念创新创业指导模式食品专业