检索结果-南通市图书馆

Effect of heat treatment on microstructural evolution,mechanical properties and tribological properties of H13 steel prepared using selective laser melting

引用

Journal of Iron and Steel Research(International) 2024年第5期31卷 1246-1259页

作者： Li-xiong Han Yan Wang Shi-feng liu Zhao-hui Zhang Wei liu Xin Yang Dang-shen Ma Jian Zhou Ying-kang Wei College of Metallurgical Engineering Xi’an University of Architecture and TechnologyXi’an710055ShaanxiChina Zhejiang University City College Hangzhou310015ZhejiangChina China Iron and Steel Research Institute Group Co. Ltd.Beijing100081China

H13 tool steel was successfully prepared by selective laser melting(SLM)*** effects of heat treatment on the microstructure,mechanical properties,and tribological properties of SLMed H13 steel were *** heat treatment process involved a solution treatment and a double aging treatment of the deposited H13 tool steel prepared by *** aim is to optimize the microstructure and mechanical properties of SLMed H13 *** to the rapid heating and cooling effects of SLM,carbide precipitation in the deposited H13 steel was not uniform and residual stresses were *** purpose of the solution treatment is to dissolve the solution at a high temperature to eliminate the residual stresses and defects introduced by the SLM-forming *** solution treatment and first aging treatment produced the precipitation of small carbides at the grain boundaries and inside the crystals,which increased the hardness of SLMed H13 *** hardness increased from 538±4.0 HV of the as-deposited sample to 548±5.8 HV of samples after the first aging ***,the ultimate tensile strength and the elongation at break decreased from 1882 MPa and 11.5%in the as-deposited sample to 1697 MPa and 7.9%in those after the first aging treatment,***,the friction coefficient and wear rate in the as-deposited sample decreased from 0.5160 and 2.36×10^(–6)mm^(−3)N^(−1)m^(−1)to 0.4244 and 1.04×10^(–6)mm^(−3)N^(−1)m^(−1),***,the distribution of carbides inside the crystals was not *** second aging treatment adjusted the morphology of carbide precipitation and made it more uniform,but the precipitation of carbides grew and settled at the bottom of the grain *** hardness decreased to 533±6.7 HV compared with that with the first aging treatment,but the ultimate tensile strength and plasticity reached a balance(1807 MPa,14.05%).Accordingly,the friction coefficient and wear rate also showed a stable and decreasin

关键词： Selective laser melting H13 steel Solution aging Double aging Friction and wear Retained austenite

来源：

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

Berberine Enhances Intestinal Mucosal Barrier Function by Promoting Vitamin D Receptor Activity

引用

Chinese Journal of Integrative Medicine 2024年第2期30卷 143-151页

作者： HUANG Yong-quan liu Jia-lin CHEN Geng-xin SHEN Dan-ting ZHU Wang CHEN Xin-lin liu feng-bin HOU Qiu-ke Graduate School Guangzhou University of Chinese MedicineGuangzhou(510405)China Department of Orthopedics the Second Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Preventive Medicine and Health Statistics Guangzhou University of Chinese MedicineGuangzhou(510006)China Department of Gastroenterology the First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou(510405)China

Objective:To evaluate if berberine can act on vitamin D receptors(VDR)and thereby regulate the expression of tight junction proteins(TJPs)in irritable bowel syndrome-diarrhea-predominant(IBS-D)***:The newborn rats were induced into IBS-D rat model via neonatal maternal separation combined with acetic acid chemical *** modeling,the model was evaluated and rats were divided into the control group and berberine treatment groups(0.85,1.7 and 3.4 mg/kg,once a day for 2 weeks).The distal colon was obtained and colonic epithelial cells(CECs)were isolated and cultured after IBS-D model *** vitamin D receptor response element(VDRE)reporter gene was determined in the CECs of IBS-D rats to analyze the effect of berberine on the VDRE *** overexpression or silencing technology was used to analyze whether VDR plays a role in promoting intestinal barrier repair,and to determine which region of VDR plays a role in berberine-regulated intestinal ***:The IBS-D rat model was successfully constructed and the symptoms were improved by berberine in a dose-dependent manner(P<0.05).The activity of VDRE promoter was also effectively promoted by berberine(P<0.05).Berberine increased the expression of TJPs in IBS-D CECs(P<0.05).VDR expression was significantly increased after transfection of different domains of VDR when compared to normal control and basic plasmid groups(all P<0.05).RT-qPCR and Western blot results showed that compared with the blank group,expressions of occludin and zonula occludens-1 were significantly higher in VDR containing groups(all P<0.05).Berberine plus pCMV-Myc-VDR-N group exerted the highest expression levels of occludin and zonula occludens-1(P<0.05).Conclusion:Berberine enhances intestinal mucosal barrier function of IBS-D rats by promoting VDR activity,and the main site of action is the N-terminal region of VDR.

关键词： berberine Chinese medicine irritable bowel syndrome-diarrhea-predominant vitamin D receptors intestinal mucosal barrier tight junction proteins

来源：

维普期刊数据库

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

Single-crystalline hole-transporting layers for efficient and stable organic light-emitting devices

引用

Light(Science & Applications) 2024年第7期13卷 1341-1353页

作者： Gao-Da Ye Ran Ding Su-Heng Li Lei Ni Shu-Ting Dai Nian-Ke Chen Yue-feng liu Runda Guo Lei Wang Xian-Bin Li Bin Xu Jing feng State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin Street130012 ChangchunChina. State Key Laboratory of Supermolecular Structures and Materials The Institute of Theoretical ChemistryJilin University2699 Qianjin Street130012 ChangchunChina. Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology430074 WuhanChina

Efficient charge-carrier injection and transport in organic light-emitting devices(OLEDs)are essential to simultaneously achieving their high efficiency and long-term ***,the charge-transporting layers(CTLs)deposited by various vapor or solution processes are usually in amorphous forms,and their low charge-carrier mobilities,defectinduced high trap densities and inhomogeneous thickness with rough surface morphologies have been obstacles towards high-performance ***,organic single-crystalline(SC)films were employed as the hole-transporting layers(HTLs)instead of the conventional amorphous films to fabricate highly efficient and stable *** highmobility and ultrasmooth morphology of the SC-HTLs facilitate superior interfacial characteristics of both HTL/electrode and HTL/emissive layer interfaces,resulting in a high Haacke’s figure of merit(FoM)of the ultrathin top electrode and low series-resistance joule-heat loss ratio of the ***,the thick and compact SC-HTL can function as a barrier layer against moisture and oxygen *** a result,the SC-OLEDs show much improved efficiency and stability compared to the OLEDs based on amorphous or polycrystalline HTLs,suggesting a new strategy to developing advanced OLEDs with high efficiency and high stability.

关键词： crystalline amorphous charge

来源：

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

Cooperative localization methods of autonomous underwater vehicle swarm integrated with inverted ultrashort baseline

引用

Chinese Journal of Acoustics 2024年第1期43卷 1-22页

作者： liu feng WANG Yuxiong CHEN Huifang XIE Lei College of Information Science and Electronic Engineering Zhejiang UniversityHangzhou 310027 Zhejiang Provincial Laboratory of Information Processing Communication and NetworkingHangzhou 310027 Zhoushan Ocean Research Center Zhejiang UniversityZhoushan 316021

A cooperative localization factor graph for the autonomous underwater vehicle(AUV) swarm integrated with inverted ultrashort baseline(iUSBL) is constructed. Two cooperative localization methods of slave AUV in an AUV swarm are proposed, namely the extended Kalman filter(EKF)-based cooperative localization method and particle belief propagation(BP)-based cooperative localization method, where the effect of the positioning error of leader AUV is mitigated. For the EKF-based cooperative localization method, the state of the slave AUV is reconstructed with the positioning information of leader AUV to achieve cooperative localization. In the particle-BP-based cooperative localization method,the measurement particles are generated to realize cooperative localization. The proposed methods can solve the poor real-time problem of traditional methods, and only require oneway acoustic positioning transmission measurement to realize the localization of the slave AUV. Simulation results show that the two proposed cooperative localization methods work well for slave AUVs with different localization abilities. Compared with the dead-reckoning method, the localization errors of two proposed methods are reduced by more than 80%,and the positioning error accumulation is effectively suppressed. Furthermore, the proposed cooperative localization methods can operate normally under a high packet loss rate of the underwater acoustic channel, and the localization performance is not significantly degraded.

关键词： underwater autonomous cooperative

来源：

维普期刊数据库

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

Gut microbiota dysbiosis contributes toα-synuclein-related pathology associated with C/EBPβ/AEP signaling activation in a mouse model of Parkinson’s disease

引用

Neural Regeneration Research 2024年第9期19卷 2081-2088页

作者： Xiaoli Fang Sha liu Bilal Muhammad Mingxuan Zheng Xing Ge Yan Xu Shu Kan Yang Zhang Yinghua Yu Kuiyang Zheng Deqin Geng Chun-feng liu Department of Neurology and Clinical Research Center of Neurological Disease The Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Jiangsu Key Laboratory of Immunity and Metabolism Department of Pathogen Biology and ImmunologyXuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Neurology Xuzhou Central HospitalXuzhouJiangsu ProvinceChina Jiangsu Key Laboratory of Neuropsychiatric Disease and Institute of Neuroscience Soochow UniversitySuzhouJiangsu ProvinceChina

Parkinson’s disease is a neurodegenerative disease characterized by motor and gastrointestinal *** dysfunction can precede the onset of motor symptoms by several *** microbiota dysbiosis is involved in the pathogenesis of Parkinson’s disease,whether it plays a causal role in motor dysfunction,and the mechanism underlying this potential effect,remain ***/enhancer binding proteinβ/asparagine endopeptidase(C/EBPβ/AEP)signaling,activated by bacterial endotoxin,can promoteα-synuclein transcription,thereby contributing to Parkinson’s disease *** this study,we aimed to investigate the role of the gut microbiota in C/EBPβ/AEP signaling,α-synuclein-related pathology,and motor symptoms using a rotenone-induced mouse model of Parkinson’s disease combined with antibiotic-induced microbiome depletion and fecal microbiota *** found that rotenone administration resulted in gut microbiota dysbiosis and perturbation of the intestinal barrier,as well as activation of the C/EBP/AEP pathway,α-synuclein aggregation,and tyrosine hydroxylase-positive neuron loss in the substantia nigra in mice with motor ***,treatment with rotenone did not have any of these adverse effects in mice whose gut microbiota was depleted by pretreatment with ***,we found that transplanting gut microbiota derived from mice treated with rotenone induced motor deficits,intestinal inflammation,and *** of fecal microbiota from healthy control mice alleviated rotenone-induced motor deficits,intestinal inflammation,endotoxemia,and intestinal barrier *** results highlight the vital role that gut microbiota dysbiosis plays in inducing motor deficits,C/EBPβ/AEP signaling activation,andα-synuclein-related pathology in a rotenone-induced mouse model of Parkinson’s ***,our findings suggest that supplementing with healthy microbiota may be a safe and effective treatment that c

关键词： C/EBP/AEP signaling pathway endotoxemia fecal microbiota transplantation intestinal barrier intestinal inflammation microbiota-gut-brain axis Parkinson’s disease

来源：

维普期刊数据库

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

Lymph node-biomimetic scaffold boosts CAR-T therapy against solid tumor

引用

National Science Review 2024年第4期11卷 206-215页

作者： Ziyan Liao Jie Jiang Wei Wu Jiaqi Shi Yanfang Wang Yuejun Yao Tao Sheng feng liu Wei liu Peng Zhao Feifei Lv Jie Sun Hongjun Li Zhen Gu National Key Laboratory of Advanced Drug Delivery and Release Systems College of Pharmaceutical Sciences Zhejiang University Key Laboratory of Advanced Drug Delivery Systems of Zhejiang Province College of Pharmaceutical SciencesZhejiang University Liangzhu Laboratory Zhejiang University Bone Marrow Transplantation Center of the First Affiliated Hospital and Department of Cell Biology Zhejiang University School of Medicine Department of Medical Oncology The First Affiliated Hospital School of Medicine Zhejiang University Department of Laboratory Medicine The First Affiliated Hospital Zhejiang University School of Medicine Department of Hepatobiliary and Pancreatic Surgery The Second Affiliated HospitalSchool of MedicineZhejiang University Jinhua Institute of Zhejiang University MOE Key Laboratory of Macromolecular Synthesis and Functionalization of Ministry of Education Department of Polymer Science and EngineeringZhejiang University Department of General Surgery Sir Run Run Shaw Hospital School of Medicine Zhejiang University

The limited infiltration and persistence of chimeric antigen receptor(CAR)-T cells is primarily responsible for their treatment deficits in solid tumors. Here, we present a three-dimensional scaffold, inspired by the physiological process of T-cell proliferation in lymph nodes. This scaffold gathers the function of loading,delivery, activation and expansion for CAR-T cells to enhance their therapeutic effects on solid tumors. This porous device is made from poly(lactic-co-glycolic acid) by a microfluidic technique with the modification of T-cell stimulatory signals, including anti-CD3, anti-CD28 antibodies, as well as cytokines. This scaffold fosters a 50-fold CAR-T cell expansion in vitro and a 15-fold cell expansion in vivo. Particularly, it maintains long-lasting expansion of CAR-T cells for up to 30 days in a cervical tumor model and significantly inhibits the tumor growth. This biomimetic delivery strategy provides a versatile platform of cell delivery and activation for CAR-T cells in treating solid tumors.

关键词： drug delivery cell therapy bioinspired biomaterials cancer immunotherapy

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Calcitonin gene-related peptide inhibits neuronal apoptosis in heatstroke rats via PKA/p-CREB pathway

引用

Chinese Journal of Traumatology 2024年第1期27卷 18-26页

作者： Jie Zhu Ya-Hong Chen Jing-Jing Ji Cheng-Xiang Lu Zhi-feng liu Department of Pediatric General Hospital of Southern Theater Command of PLAGuangzhou510010China Department of Medical Intensive Care Unit General Hospital of Southern Theater Command of PLAGuangzhou510010China Department of Intensive Care Unit Zhongshan Hospital Xiamen UniversityXiamenFujian province361004China

Purpose:The incidence of heatstroke(HS)is not particularly high;however,once it occurs,the consequences are *** is reported that calcitonin gene-related peptide(CGRP)is protective against brain injury in HS rats,but detailed molecular mechanisms need to be further *** this study,we further explored whether CGRP inhibited neuronal apoptosis in HS rats via protein kinase A(PKA)/p-cAMP response element-binding protein(p-CREB)***:We established a HS rat model in a pre-warmed artificial climate chamber with a temperature of(35.5±0.5)℃and a relative humidity of 60%±5%.Heatstress was stopped once core body temperature reaches above 41℃.A total of 25 rats were randomly divided into 5 groups with 5 animals each:control group,HS group,HS+CGRP group,HS+CGRP antagonist(CGRP8-37)group,and HS+CGRP+PKA/p-CREB pathway blocker(H89)group.A bolus injection of CGRP was administered to each rat in HS+CGRP group,CGRP8-37(antagonist of CGRP)in HS+CGRP8-37 group,and CGRP with H89 in HS+CGRP+H89 *** were recorded and the serum concentration of S100B,neuron-specific enolase(NSE),neuron apoptosis,activated caspase-3 and CGRP expression,as well as pathological morphology of brain tissue were detected at 2 h,6 h,and 24 h after HSin *** expression of PKA,p-CREB,and Bcl-2 in rat neurons were also detected at 2 h after HSin *** CGRP,CGRP8-37,or H89 were used to determine whether CGRP plays a protective role in brain injury via PKA/p-CREB *** unpairedt-test was used between the 2 samples,and the mean±SD was used for multiple ***-tailedp<0.05 was considered statistically ***:Electroencephalogram showed significant alteration ofθ(54.50±11.51vs.31.30±8.71,F=6.790,p=0.005)andαwave(16.60±3.21vs.35.40±11.28,F=4.549,p=0.020)in HS group compared to the control group 2 h after *** results of triphosphate gap terminal labeling(TUNEL)showed that the neuronal apoptosis of HS rats was increased in the c

关键词： Heatstroke Calcitonin gene-related peptide Brain injury Apoptosis

来源：

维普期刊数据库

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

Teneligliptin mitigates diabetic cardiomyopathy by inhibiting activation of the NLRP3 inflammasome

引用

World Journal of Diabetes 2024年第4期15卷 724-734页

作者： Gu-Lao Zhang Yuan liu Yan-feng liu Xian-Tao Huang Yu Tao Zhen-Huan Chen Heng-Li Lai Department of Cardiology Jiangxi Provincial People's HospitalThe First Affiliated Hospital of Nanchang Medical CollegeNanchang 330000Jiangxi ProvinceChina

BACKGROUND Diabetic cardiomyopathy(DCM),which is a complication of diabetes,poses a great threat to public *** studies have confirmed the role of NLRP3(NOD-like receptor protein 3)activation in DCM development through the inflammatory *** is an oral hypoglycemic dipeptidyl peptidase-IV inhibitor used to treat *** has recently been reported to have anti-inflammatory and protective effects on myocardial *** To examine the therapeutic effects of teneligliptin on DCM in diabetic *** Streptozotocin was administered to induce diabetes in mice,followed by treatment with 30 mg/kg *** Marked increases in cardiomyocyte area and cardiac hypertrophy indicator heart weight/tibia length reductions in fractional shortening,ejection fraction,and heart rate;increases in creatine kinase-MB(CK-MB),aspartate transaminase(AST),and lactate dehydrogenase(LDH)levels;and upregulated NADPH oxidase 4 were observed in diabetic mice,all of which were significantly reversed by ***,NLRP3 inflammasome activation and increased release of interleukin-1βin diabetic mice were inhibited by *** mouse cardiomyocytes were treated with high glucose(30 mmol/L)with or without teneligliptin(2.5 or 5μM)for 24 ***3 inflammasome *** in CKMB,AST,and LDH levels in glucose-stimulated cardiomyocytes were markedly inhibited by teneligliptin,and AMP(p-adenosine 5‘-monophosphate)-p-AMPK(activated protein kinase)levels were ***,the beneficial effects of teneligliptin on hyperglycaemia-induced cardiomyocytes were abolished by the AMPK signaling inhibitor compound *** Overall,teneligliptin mitigated DCM by mitigating activation of the NLRP3 inflammasome.

关键词： Diabetic cardiomyopathy Teneligliptin NLRP3 AMPK Interleukin-1β

来源：

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

Predicting structure-dependent Hubbard U parameters via machine learning

引用

Materials Futures 2024年第2期3卷 161-169页

作者： Guanghui Cai Zhendong Cao Fankai Xie Huaxian Jia Wei liu Yaxian Wang feng liu Xinguo Ren Sheng Meng Miao liu Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190People’s Republic of China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190People’s Republic of China Songshan Lake Materials Laboratory DongguanGuangdong 523808People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Tencent AI Lab TencentShenzhen 518057People’s Republic of China Department of Materials Science and Engineering University of UtahSalt Lake CityUT 84112United States of America

DFT+U is a widely used treatment in the density functional theory(DFT)to deal with correlated materials that contain open-shell elements,whereby the quantitative and sometimes even qualitative failures of local and semi-local approximations can be corrected without much computational ***,finding appropriate U parameters for a given system and structure is non-trivial and computationally intensive,because the U value has generally a strong chemical and structural *** this work,we address this issue by building a machine learning(ML)model that enables the prediction of material-and structure-specific U values at nearly no computational *** Mn–O system as an example,the ML model is trained by calibrating DFT+U electronic structures with the hybrid functional results of more than 3000 *** model allows us to determine an accurate U value(MAE=0.128 eV,R^(2)=0.97)for any given Mn–O *** analysis reveals that M–O bond lengths are key local structural properties in determining the U *** approach of the ML U model is universally applicable,to significantly expand and solidify the use of the DFT+U method.

关键词： DFT+U machine learning Bayesian optimization

来源：

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

Investigating the relationship between intracranial atherosclerotic plaque remodelling and diabetes using high-resolution vessel wall imaging

引用

World Journal of Diabetes 2024年第1期15卷 72-80页

作者： Yong-Qian Mo Hai-Yu Luo Han-Wen Zhang Yu-feng liu Kan Deng Xiao-Lei liu Biao Huang Fan Lin Department of Radiology Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina Department of Ultrasound Peking University Shenzhen HospitalShenzhen 518000Guangdong ProvinceChina The Second School of Clinical Medicine Southern Medical UniversityGuangzhou 510282Guangdong ProvinceChina Department of Radiology The First Affiliated Hospital of Shenzhen UniversityHealth Science CenterShenzhen Second People’s HospitalShenzhen 518036Guangdong ProvinceChina Research Department Philips HealthcareGuangzhou 518000Guangdong ProvinceChina Department of Radiology Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510000Guangdong ProvinceChina

BACKGROUND Intracranial atherosclerosis,a leading cause of stroke,involves arterial plaque *** study explores the link between plaque remodelling patterns and diabetes using high-resolution vessel wall imaging(HR-VWI).AIM To investigate the factors of intracranial atherosclerotic remodelling patterns and the relationship between intracranial atherosclerotic remodelling and diabetes mellitus using *** Ninety-four patients diagnosed with middle cerebral artery or basilar artery INTRODUCTION Intracranial atherosclerotic disease is one of the main causes of ischaemic stroke in the world,accounting for approx-imately 10%of transient ischaemic attacks and 30%-50%of ischaemic strokes[1].It is the most common factor among Asian people[2].The adaptive changes in the structure and function of blood vessels that can adapt to changes in the internal and external environment are called vascular remodelling,which is a common and important pathological mechanism in atherosclerotic diseases,and the remodelling mode of atherosclerotic plaques is closely related to the occurrence of *** remodelling(PR)is an outwards compensatory remodelling where the arterial wall grows outwards in an attempt to maintain a constant lumen *** a long time,it was believed that the degree of stenosis can accurately reflect the risk of ischaemic stroke[3-5].Previous studies have revealed that lesions without significant luminal stenosis can also lead to acute events[6,7],as summarized in a recent meta-analysis study in which approximately 50%of acute/subacute ischaemic events were due to this type of lesion[6].Research[8,9]has pointed out that the PR of plaques is more dangerous and more likely to cause acute ischaemic *** studies[10-13]have found that there are specific vascular remodelling phenomena in the coronary and carotid arteries of diabetic ***,due to the deep location and small lumen of intracranial arteries and limitations of i

关键词： High-resolution vessel wall imaging Intracranial atherosclerosis Vascular remodelling Magnetic resonance imaging

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：