检索结果-内蒙古大学图书馆

Apodized grating coupler using fully-etched nanostructures

Chinese Physics B 2016年第8期25卷 211-215页

作者：武华李冲李智勇郭霞 Photonic Device Research Laboratory College of Electronic Information and Control Engineering Beijing University of Technology College of Physics and Electronic Information Gan Nan Normal University State Key Laboratory for Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences School of Science Minzu University of China

A two-dimensional apodized grating coupler for interfacing between single-mode fiber and photonic circuit is demonstrated in order to bridge the mode gap between the grating coupler and optical fiber. The grating grooves of the grating couplers are realized by columns of fully etched nanostructures, which are utilized to digitally tailor the effective refractive index of each groove in order to obtain the Gaussian-like output diffractive mode and then enhance the coupling *** with that of the uniform grating coupler, the coupling efficiency of the apodized grating coupler is increased by 4.3% and 5.7%, respectively, for the nanoholes and nanorectangles as refractive index tunes layer.

关键词： grating couplers equivalent refractive index mode matching coupling efficiency

来源：评论

学校读者我要写书评

暂无评论

Changing life expectancy in European countries 1990–2021: a subanalysis of causes and risk factors from the Global Burden of Disease Study 2021

引用

The Lancet Public Health 2025年第3期10卷 e172-e188页

作者： Steel, Nicholas Bauer-Staeb, Clarissa Maria Mercedes Ford, John A. Abbafati, Cristiana Abdalla, Mohammed Altigani Abdelkader, Atef Abdi, Parsa Zuñiga, Roberto Ariel Abeldaño Abiodun, Olugbenga Olusola Abolhassani, Hassan Abu-Gharbieh, Eman Abukhadijah, Hana J. Abu-Zaid, Ahmed Addo, Isaac Yeboah Addolorato, Giovanni Adekanmbi, Victor Adetunji, Juliana Bunmi Adeyeoluwa, Temitayo Esther Agardh, Emilie E. Agyemang-Duah, Williams Ahmad, Danish Ahmed, Ayman Ahmed, Syed Anees Akinosoglou, Karolina Akkaif, Mohammed Ahmed Al Awaidy, Salah Al Hasan, Syed Mahfuz Al Zaabi, Omar Ali Mohammed Aldridge, Robert W. Algammal, Abdelazeem M. Al-Gheethi, Adel Ali Saeed Ali, Abid Ali, Mohammed Usman Ali, Syed Shujait Ali, Waad Alicandro, Gianfranco Alif, Sheikh Mohammad Al-Jumaily, Adel Allebeck, Peter Alrawashdeh, Ahmad Al-Rifai, Rami H. Alsabri, Mohammed A. Alshahrani, Najim Z. Aluh, Deborah Oyine Al-Wardat, Mohammad Al-Zyoud, Walid A. Amiri, Sohrab Anderlini, Deanna Andrei, Catalina Liliana Anil, Abhishek Anvari, Saeid Anyasodor, Anayochukwu Edward Appiah, Seth Christopher Yaw Aquilano, Michele Arabloo, Jalal Arafat, Mosab Areda, Demelash Aremu, Abdulfatai Armani, Keivan Armocida, Benedetta Ärnlöv, Johan Asaduzzaman, Muhammad Astell-Burt, Thomas Aujayeb, Avinash Ausloos, Marcel Azadnajafabad, Sina Aziz, Shahkaar Azzam, Ahmed Y. Babu, Giridhara Rathnaiah Badache, Andreea Corina Badiye, Ashish D. Bahramian, Saeed Baig, Atif Amin Baker, Jennifer L. Bansal, Hansi Bärnighausen, Till Winfried Barone, Mark Thomaz Ugliara Barrow, Amadou Barteit, Sandra Bashir, Shahid Bashiru, Hameed Akande Basso, João Diogo Bastan, Mohammad-Mahdi Basu, Sanjay Batra, Kavita Bauckneht, Matteo Baune, Bernhard T. Beghi, Massimiliano Beiranvand, Maryam Béjot, Yannick Bell, Michelle L. Bello, Olorunjuwon Omolaja Belo, Luis Beloukas, Apostolos Beneke, Alice A. Bettencourt, Paulo J.G. Bhagavathula, Akshaya Srikanth Bhala, Neeraj Bhaskar, Sonu Bisulli, Francesca Bjørge, Tone Bodunrin, Aadam Olalekan Carvajal, Alejandro Botero Bouaoud, Souad Brayne, Carol Brenner, H Department of Primary Care and Public Health University of East Anglia Norwich United Kingdom Office for Health Improvement and Disparities Department of Health and Social Care London United Kingdom Department of Legal and Economic Studies La Sapienza University Rome Italy Rome Italy Hull York Medical School University of Hull Hull United Kingdom Department of Mathematics and Sciences Ajman University Ajman United Arab Emirates Department of Medicine Memorial University St. John's NL Canada Postgraduate Department University of Sierra Sur Miahuatlan de Porfirio Diaz Mexico Yhteiskuntadatatieteen keskus (Centre for Social Data Science) Helsinki Finland Department of Internal Medicine Federal Medical Centre Abuja Nigeria Research Center for Immunodeficiencies Tehran University of Medical Sciences Tehran Iran Department of Medical Biochemistry and Biophysics Karolinska Institutet (Karolinska Institute) Stockholm Sweden Department of Clinical Sciences University of Sharjah Sharjah United Arab Emirates Department of Biopharmaceutics and Clinical Pharmacy University of Jordan Amman Jordan Medical Research Center Hamad Medical Corporation Doha Qatar Department of Biochemistry and Molecular Medicine Alfaisal University Riyadh Saudi Arabia College of Graduate Health Sciences University of Tennessee Memphis TN United States School of Medicine Sydney NSW Australia Centre for Social Research in Health University of New South Wales Sydney NSW Australia Internal Medicine and Alcohol Related Disease Unit Fondazione Policlinico Universitario A. Gemelli IRCCS Rome Italy Department of Medical and Surgical Sciences Università Cattolica di Roma (Catholic University of Rome) Rome Italy Department of Obstetrics and Gynecology University of Texas Medical Branch Galveston TX United States Department of Biochemistry Osun State University Osogbo Nigeria Department of Pharmacology and Therapeutics University of Medical Sciences Ondo Ondo Nigeria Department of Veteri

Background: Decades of steady improvements in life expectancy in Europe slowed down from around 2011, well before the COVID-19 pandemic, for reasons which remain disputed. We aimed to assess how changes in risk factors and cause-specific death rates in different European countries related to changes in life expectancy in those countries before and during the COVID-19 pandemic. Methods: We used data and methods from the Global Burden of Diseases, Injuries, and Risk Factors Study 2021 to compare changes in life expectancy at birth, causes of death, and population exposure to risk factors in 16 European Economic Area countries (Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, and Sweden) and the four UK nations (England, Northern Ireland, Scotland, and Wales) for three time periods: 1990–2011, 2011–19, and 2019–21. Changes in life expectancy and causes of death were estimated with an established life expectancy cause-specific decomposition method, and compared with summary exposure values of risk factors for the major causes of death influencing life expectancy. Findings: All countries showed mean annual improvements in life expectancy in both 1990–2011 (overall mean 0·23 years [95% uncertainty interval [UI] 0·23 to 0·24]) and 2011–19 (overall mean 0·15 years [0·13 to 0·16]). The rate of improvement was lower in 2011–19 than in 1990–2011 in all countries except for Norway, where the mean annual increase in life expectancy rose from 0·21 years (95% UI 0·20 to 0·22) in 1990–2011 to 0·23 years (0·21 to 0·26) in 2011–19 (difference of 0·03 years). In other countries, the difference in mean annual improvement between these periods ranged from –0·01 years in Iceland (0·19 years [95% UI 0·16 to 0·21] vs 0·18 years [0·09 to 0·26]), to –0·18 years in England (0·25 years [0·24 to 0·25] vs 0·07 years [0·06 to 0·08]). In 2019–21, there was an overall decrease in mean annual life expectancy a

关键词：

来源：评论

学校读者我要写书评

暂无评论

Malnutrition and Quality of Life in Chinese Cancer Patients: a Clinical Study of 23,994 Subjects

引用

Journal of Nutritional Oncology 2021年第1期6卷 16-32页

作者： Hong Xia Xu Chun Hua Song Zhen Ming Fu Chang Wang Zeng Qing Guo Yuan Lin Ying Ying Shi Wen Hu Yi Ba Su Yi Li Zeng Ning Li Kun Hua Wang Jing Wu Ying He Jia Jun Yang Cong Hua Xie Fu Xiang Zhou Xin Xia Song Gong Yan Chen Wen Jun Ma Su Xia Luo Zi Hua Chen Ming Hua Cong Hu Ma Chun Ling Zhou Wei Wang Qi Luo Yong Mei Shi Yu Mei Qi Hai Ping Jiang Wen Xian Guan Jun Qiang Chen Jia Xin Chen Yu Fang Lan Zhou Yong Dong Feng Rong Shao Tan Tao Li Jun Wen Ou Qing Chuan Zhao Jian Xiong Wu Min Weng Qing Hua Yao Jiu Wei Cui Wei Li Han Ping Shi the Investigation on Nutrition Status and Clinical Outcome of Common Cancers(INSCOC)Group Department of Nutrition Daping Hospital&Research Institute of SurgeryThird Military Medical UniversityChongqing 400042China Department of Epidemiology College of Public HealthZhengzhou UniversityZhengzhou 450001HenanChina Cancer Center Renmin Hospital of Wuhan UniversityWuhan 430060HubeiChina Cancer Center of the First Hospital of Jilin University Changchun 130021JilinChina Department of Medical Oncology Fujian Cancer HospitalFujian Medical University Cancer HospitalFuzhou 350014FujianChina Department of Gastrointestinal Surgery Cancer Hospital Affiliated to Guangxi Medical UniversityNanning 530021GuangxiChina Department of Surgery The First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080GuangdongChina Department of Clinical Nutrition West China Hospital of Sichuan UniversityChengdu 610041SichuanChina Department of Gastrointestinal Oncology Tianjin Medical University Cancer Institute and HospitalNational Clinical Research Center for CancerTianjin Key Laboratory of Cancer Prevention and TherapyTianjin 300060China Department of Nutrition and Metabolism of Oncology Affiliated Provincial Hospital of Anhui Medical UniversityHefei 230031AnhuiChina Department of Clinical Nutrition the First Hospital of Hebei Medical UniversityShijiazhuang 050031HebeiChina Department of Gastrointestinal Surgery Institute of Gastroenterologythe First Affiliated Hospital of Kunming Medical University 650032KunmingYunnanChina Department of Clinical Nutrition the First People's Hospital of KashiKashi 844000XinjiangChina Department of Clinical Nutrition Chongqing General HospitalChongqing 400014China Department of Colorectal and Anal Surgery Huizhou Municipal Central HospitalHuizhou 516001GuangdongChina Department of Radiation and Medical Oncology Zhongnan Hospital of Wuhan UniversityWuhan 430071HubeiChina Department of Oncology Xingtai People’s HospitalHebei Medical UniversityXingtai 054031HebeiChina Harbin Medical University Cancer Hospital Harbin 150085HeilongjiangChina

Background Malnutrition is common in patients with cancer,and can negatively impact their quality of life(QoL)and even ***,there is currently no large data available on the prevalence of malnutrition in Chinese cancer *** study evaluated the prevalence of malnutrition and the QoL of Chinese patients with locoregional,recurrent or metastatic *** We conducted a nationwide observational,multi-center,hospital-based cross-sectional study within the Chinese Society of Nutritional Oncology(CSNO)*** of the patients were diagnosed with one of the following 18 different types of malignant tumors:lung cancer,gastric cancer,liver cancer,colorectal cancer,breast cancer,esophageal cancer,cervical cancer,endometrial cancer,nasopharyngeal carcinoma,malignant lymphoma,leukemia,pancreatic cancer,ovarian cancer,prostate cancer,bladder cancer,brain cancer,biliary tract malignant tumors or gastrointestinal stromal *** patients were enrolled from 72 hospitals located in different regions of *** patients’nutritional status was evaluated based on the body mass index(BMI),loss of bodyweight,laboratory measurements and patient generated-subjective global assessment(PG-SGA)*** cancer patients’physical status and QoL were assessed by the Karnofsky Performance Status(KPS)questionnaire and the European Organization for Research and Treatment of Cancer(EORTC)QLQ-C30 questionnaire,*** From December 2013 to April 2016,23,994 patients hospitalized for cancer treatment(such as surgery,chemotherapy or radiotherapy)were enrolled in the *** patients included 12,494(52.9%)males and 11,124(47.1%)*** mean age was 55.8±13.7 *** proportions of patients in cancer stagesⅠ,Ⅱ,Ⅲ,Ⅳand uncertain were 11.5%,20.3%,27.5%,30.2%and 10.5%,*** the 23,994 inpatients,the proportions of patients who were underweight(BMI<18.5 kg/m2),normal(18.5 kg/m2

关键词： Nutritional status Nutritional assessment Malnutrition Patient generated subjective global assessment Body mass index Body weight loss Karnofsky Performance Status score Quality of life

来源：评论

学校读者我要写书评

暂无评论

Three-dimensional trajectory optimization for lunar ascent using gauss pseudospectral method

Three-dimensional trajectory optimization for lunar ascent u...

引用

AIAA Guidance, Navigation, and control Conference, 2016

作者： Ma, Lin Shao, Zhijiang Chen, Weifeng Lv, Xinguang Song, Zhengyu Zhejiang University Hangzhou310027 China Department of Automation College of Information Engineering Zhejiang University of Technology Hangzhou310023 China National Key Laboratory of Science and Technology on Aerospace Intelligent Control Beijing100854 China College of Control Science and Engineering China College of Control Science and Engineering State Key Laboratory of Industrial Control Technology China

ISBN: (数字)9781624103896

ISBN: (纸本)9781624103896

In this paper, the problem of fuel-optimal lunar ascent trajectory optimization using constant-thrust propulsion is considered. The whole lunar ascent process is divided into two phases: vertical-rise phase and orbit-insertion phase, respectively. Considering the influence of rotation of the moon, a three-dimensional kinematics and dynamics model for lunar ascent is established. The fuel-optimal lunar ascent trajectory optimization problem is posed as a two-phase constrained nonlinear trajectory optimization problem solved by using Gauss pseudospectral method. Initial guesses for this trajectory optimization problem are obtained by solving a subproblem where the angular rate of pitch angle and yaw angel is not constrained. Four scenarios of the two-phase lunar ascent trajectory optimization problem are designed. The simulation results show that all state and control variables satisfy the related constraints and practical engineering condition in each scenario. The developed direct trajectory optimization framework has the adaptability to address various scenarios of the two-phase lunar ascent mission. © 2016, (publisher). All rights reserved.

关键词： Orbits

来源：评论

学校读者我要写书评

暂无评论

Radio Occultation Experiment for Lunar Ionosphere Based on the Service Module of Circumlunar Return and Reentry Spacecraft

Radio Occultation Experiment for Lunar Ionosphere Based on t...

引用

中国矿物岩石地球化学学会第九次全国会员代表大会暨第16届学术年会

作者： WANG Ming-yuan HAN Song-tao PING Jin-song WANG Mei LIANG Li-bo TANG Ge-shi Key Laboratory of Lunar and deep space exploration research National Astronomical ObservatoriesChin Key Laboratory of Lunar and deep space exploration research National Astronomical ObservatoriesChin Key Laboratory of Lunar and deep space exploration research National Astronomical ObservatoriesChin Science and Technology on Aerospace Flight Dynamics Laboratory Beijing Aerospace Control CenterBeij

来源：评论

学校读者我要写书评

暂无评论

CASCIRE surveillance network and work on avian influenza viruses

引用

science China(Life sciences) 2017年第12期60卷 1386-1391页

作者： Yuhai Bi Weifeng Shi Jianjun Chen Quanjiao Chen Zhenghai Ma Gary Wong Wenxia Tian Renfu Yin Guanghua Fu Yongchun Yang William J.Liu Chuansong Quan Qianli Wang Shenghu He Xiangdong Li Qianfeng Xia Lixin Wang Zhaohui Pan Laixing Li Hong Li Wen Xu Ying Luo Hui Zeng Lianpan Dai Haixia Xiao Kirill Sharshov Alexander Shestopalov Yi Shi Jinghua Yan Xuebing Li Yingxia Liu Fumin Lei Wenjun Liu George F.Gao CAS Key Laboratory of Pathogenic Microbiology and Immunology Collaborative Innovation Center for Diagnosis and Treatment ofInfectious DiseaseInstitute of MicrobiologyCenter for Influenza Research and Early-warning(CASCIRE)Chinese Academy of SciencesBeijing 100101China Shenzhen Key Laboratory of Pathogen and Immunity State Key Discipline of Infectious DiseaseShenzhen Third People's HospitalShenzhen 518112China Shandong Universities Key Laboratory of Etiology and Epidemiology of Emerging Infectious Diseases Taishan Medical CollegeTai'an 271016China CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyChinese Academy of SciencesWuhan 430071China College of Life Science and Technology Xinjiang UniversityUrumchi 830046China College of Animal Science and Veterinary Medicine Shanxi Agricultural UniversityTaigu 030801China Department of Veterinary Preventive Medicine College of Veterinary MedicineJilin UniversityJilin 130062China Institute of Animal Husbandry and Veterinary Medicine Fujian Academy of Agricultural SciencesFuzhou 350013China Center of Excellence for Animal Health Inspection College of Animal Science and TechnologyZhejiang Agriculture and Forestry UniversityZhejiang 311300China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention(China CDC)Beijing 102206China Key Laboratory of Public Health Safety Ministry of EducationSchool of Public HealthFudan UniversityShanghai 200032China Laboratory of Clinical Veterinary Medicine College of AgricultureNingxia UniversityYinchuan 750021China National Research Center for Veterinary Medicine Luoyang 471003China Laboratory of Tropical Biomedicine and Biotechnology and Faculty of Tropical Medicine and Laboratory MedicineImmunology DepartmentSchool of Basic Medicine and Life ScienceHainan Medical UniversityHaikou 571101China Xizang Agriculture and Animal Husbandry College Linzhi 860000China Key Laboratory of Adaptation and Evolution of Plateau Biota N

Studies on influenza virus by Chinese Academy of sciences(CAS)could be traced back as early as 2005 by the CAS key laboratory of Pathogenic Microbiology and Immunology(CASPMI),who discovered that Qinghai-like Clade 2.2H5N1 subtype highly pathogenic avian influenza virus(HPAIV)first caused severe outbreak in wild birds in Qinghai Lake(Liu et al.,2005).

关键词： CASCIRE surveillance network work on avian influenza viruses

来源：评论

学校读者我要写书评

暂无评论

A new two feed-back control method integrated in digital gate driver for large power IGBT

A new two feed-back control method integrated in digital gat...

引用

2016 IEEE Information technology, Networking, Electronic and Automation control Conference, ITNEC 2016

作者： Liangdeng, Hu Yulin, Chen Sheng, Ai National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering Wuhan Hubei Province China

ISBN: (纸本)9781467391924

In high power applications, proper gate control strategy for insulated gate bipolar transistors (IGBTs) can increase their efficient and reliability. As to the feed-back control strategy, the key issues are the control speed and control stability. This paper proposed a new feed-back control method integrated in digital gate driver for high power IGBT. It aims for controlling the current and voltage slope suppressing the voltage overshoot and electromagnetic interference (EMI) in switching transient. The digital gate driver for large power IGBT detects the collector current and voltage in real time. Then the detected analog signal is digitally sampled and sent to the digital core on board. An algorithm similar to bang-bang control is deployed in forward control loop to adjust the gate drive resistance. The control stability and robustness can be guaranteed as a result. The whole detection and control process is accomplished in real time with only hundreds of nanoseconds. Thus, the proposed control method can optimized the IGBT switching transient with high reliability and time effectiveness. Experimental results validate the feasibility of the proposed feed-back digital control method. © 2016 IEEE.

关键词： Feedback

来源：评论

学校读者我要写书评

暂无评论

3D FEM Analyses on Flow Field Characteristics of the Valveless Piezoelectric Pump

引用

Chinese Journal of Mechanical Engineering 2016年第4期29卷 825-831页

作者： HUANG Jun ZHANG Jianhui SHI Weidong WANG Yuan National Research Center of Pumps Jiangsu University School of Mechanical and Electric Engineering Guangzhou University State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and Astronautics College of Communication Engineering PLA University of Science and Technology

Due to the special transportation and heat transfer characteristics,the fractal-like Y-shape branching tube is used in valveless piezoelectric pumps as a no-moving-part ***,there have been little analyses on the flow resistance of the valveless piezoelectric pump,which is critical to the performance of the valveless piezoelectric pump with fractal-like Y-shape branching *** field of the piezoelectric pump is analyzed by the finite element method,and the pattern of the velocity streamlines is revealed,which can well explain the difference of total flow resistances of the piezoelectric ***,simplified numerical method is employed to calculate the export flow rate of piezoelectric pump,and the flow field of the piezoelectric pump is *** FEM computation shows that the maximum flow rate is 16.4 m L/*** with experimental result,the difference between them is just 55.5%,which verifies the FEM *** reasons of the difference between dividing and merging flow resistance of the valveless piezoelectric pump with fractal-like Y-shape branching tubes are also investigated in this *** proposed research provides the instruction to design of novel piezoelectric pump and a rapid method to analyse the pump flow rate.

关键词： piezoelectric pump valveless fractal-like Y-shape branching tube FEM

来源：评论

学校读者我要写书评

暂无评论

Radio Occultation Experiment for Lunar Ionosphere Based on the Service Module of Circumlunar Return and Reentry Spacecraft

Radio Occultation Experiment for Lunar Ionosphere Based on t...

引用

中国矿物岩石地球化学学会第九次全国会员代表大会暨第16届学术年会

作者：王明远 HAN Song-tao PING Jin-song WANG Mei LIANG Li-bo TANG Ge-shi Key Laboratory of Lunar and deep space exploration research National Astronomical ObservatoriesChinese Academy of Sciences Key Laboratory of Planetary Sciences Shanghai Astronomical ObservatoryChinese Academy of Sciences Science and Technology on Aerospace Flight Dynamics Laboratory Beijing Aerospace Control Center

The existence of lunar ionosphere has been under debate for a long *** Apollo 14 *** electron density detected by the charged particle lunar environment experiment(CPLEE)was 10el/cm at several hundred meters high during lunar day *** Luna-19/22 mission,the electron density profiles were detect and the peak densities were about 10el/*** the last *** mission SMART-1 and

关键词：

来源：评论

学校读者我要写书评

暂无评论

Autonomous Optical Navigation Approach Aided by Radio Beacon for Deep Space Spacecraft

Autonomous Optical Navigation Approach Aided by Radio Beacon...

引用

第28届中国控制与决策会议

作者： Jing Yan Zhu Shengying Wang Lina School of Aerospace Engineering Beijing Institute of Technology Key Laboratory of Autonomous Navigation and Control for Deep Space Exploration Ministry of Industry and Information Technology Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of Education National Key Laboratory of Science and Technology on Aerospace Intelligence Control

ISBN: (纸本)9781467397155

According to task requests of deep space exploration approach phase such as autonomy,real-time and so on,we did a research into the problem of autonomous navigation at this approach phase and put forward an autonomous navigation project which made use of radio beacon and navigation camera to determine relative position and velocity of the *** radio beacon could measure its distance to the spacecraft and the navigation camera could acquire the line-of-sight vector to the *** kalman filter we could get the spacecraft's state *** observability degree of the navigation system was increased by importing a new *** order to verify the performance of this autonomous navigation system,simulink tests based on the practical data of Deep Impact mission were carried *** results show that the presented method can not only meet navigation requests of approach phase but also gain the navigation system observability degree.

关键词： optical navigation deep space explorer radio ranging kalman filter

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：