咨询与建议

限定检索结果

文献类型

  • 9 篇 期刊文献

馆藏范围

  • 9 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 5 篇 理学
    • 2 篇 物理学
    • 1 篇 数学
    • 1 篇 天文学
    • 1 篇 生物学
  • 3 篇 医学
    • 2 篇 临床医学
    • 1 篇 基础医学(可授医学...
    • 1 篇 药学(可授医学、理...
  • 1 篇 工学
    • 1 篇 仪器科学与技术
    • 1 篇 农业工程

主题

  • 2 篇 juno
  • 1 篇 反馈
  • 1 篇 explain
  • 1 篇 its
  • 1 篇 目标细菌
  • 1 篇 meaningful
  • 1 篇 gauge inverse mo...
  • 1 篇 phytopathogenic ...
  • 1 篇 replacement
  • 1 篇 hypoestrogenicit...
  • 1 篇 annotation
  • 1 篇 liquid scintilla...
  • 1 篇 nitrate
  • 1 篇 estrogen
  • 1 篇 patients
  • 1 篇 波罗的海
  • 1 篇 耐万古霉素肠球菌
  • 1 篇 耐甲氧西林金黄色...
  • 1 篇 20-hete
  • 1 篇 solar neutrino

机构

  • 2 篇 tsung-dao lee in...
  • 2 篇 forschungszentru...
  • 2 篇 infn milano bico...
  • 2 篇 guangxi universi...
  • 2 篇 yerevan physics ...
  • 2 篇 jinan university...
  • 2 篇 dongguan univers...
  • 2 篇 north china elec...
  • 2 篇 pakistan institu...
  • 2 篇 nanjing universi...
  • 2 篇 technische unive...
  • 2 篇 national united ...
  • 2 篇 the radiochemist...
  • 2 篇 xi’an jiaotong u...
  • 2 篇 school of physic...
  • 2 篇 college of elect...
  • 2 篇 eberhard karls u...
  • 2 篇 wuyi university ...
  • 2 篇 universidad tecn...
  • 2 篇 beijing normal u...

作者

  • 2 篇 yifan yang
  • 2 篇 sébastien leblan...
  • 2 篇 apimook watchara...
  • 2 篇 yupeng yan
  • 2 篇 nicomede pellicc...
  • 2 篇 emanuela meroni
  • 2 篇 simon blyth
  • 2 篇 nunzio guardone
  • 2 篇 marco fargetta
  • 2 篇 bayarto lubsando...
  • 2 篇 jason leung
  • 2 篇 alexander tietzs...
  • 2 篇 ugur yegin
  • 2 篇 flavio dal corso
  • 2 篇 igor tkachev
  • 2 篇 andre kruth
  • 2 篇 konstantin kouza...
  • 2 篇 steven chan-fai ...
  • 2 篇 tobias heinz
  • 2 篇 giancarlo troni

语言

  • 7 篇 英文
  • 2 篇 中文
检索条件"作者=Emil Daniel schwab"
9 条 记 录,以下是1-10 订阅
排序:
Gauge Inverse Monoids
收藏 引用
Algebra Colloquium 2020年 第2期27卷 181-192页
作者: emil daniel schwab Department of Mathematical Sciences The University of Texas at El Paso El PasoTexas 79968USA
The paper introduces a class of inverse(sub)monoids which contains Jones-Lawson’s gauge inverse(sub)*** aim is to give examples and the basic properties of these ***-Lawson’s gauge inverse monoid,as an inverse submo... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Extracting structural motifs from pair distribution function data of nanostructures using explainable machine learning
收藏 引用
npj Computational Materials 2022年 第1期8卷 2053-2063页
作者: Andy S.Anker emil T.S.Kjær Mikkel Juelsholt Troels Lindahl Christiansen Susanne Linn Skjærvø Mads Ry Vogel Jørgensen Innokenty Kantor daniel Risskov Sørensen Simon J.L.Billinge Raghavendra Selvan Kirsten M.Ø.Jensen Department of Chemistry and Nano-Science Center University of Copenhagen2100CopenhagenDenmark Department of Materials University of OxfordParks RoadOxfordUK Department of Chemistry&iNANO Aarhus University8000AarhusDenmark MAX IV Laboratory Lund University22484LundSweden Department of Physics Technical University of Denmark2880LyngbyDenmark Department of Applied Physics and Applied Mathematics Columbia UniversityNew YorkNY10027USA Condensed Matter Physics and Materials Science Department Brookhaven National LaboratoryUptonNY11973USA Department of Computer Science University of Copenhagen2100CopenhagenDenmark Department of Neuroscience University of Copenhagen2200CopenhagenDenmark
Characterization of material structure with X-ray or neutron scattering using *** Distribution Function(PDF)analysis most often rely on refining a structure model against an experimental ***,identifying a suitable mod... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Effects of delayed estrogen treatment and 20-HETE synthesis inhibition on postischemic pial artery response to acetylcholine in rats
收藏 引用
Open Journal of Molecular and Integrative Physiology 2014年 第1期4卷 1-10页
作者: Chikao Miyazaki emil N. Zeynalov Raymond C. Koehler Marguerite T. Littleton-Kearney daniel K. Inouye Graduate School of Nursing Uniformed Services University of the Health Sciences Bethesda USA Department of Anesthesiology/Critical Care Medicine School of Medicine Johns Hopkins University Baltimore USA
Relatively little is known about the effects of estrogen on postischemic cerebral vasomotor dynamics after ischemic injury. Emerging hypotheses suggest that the timing after menopause at which hormone replacement is i... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
Relationship between nitrate headache and outcome in patients with acute stroke: results from the efficacy of nitric oxide in stroke (ENOS) trial
收藏 引用
Stroke & Vascular Neurology 2021年 第2期6卷 180-186页
作者: Lucy Beishon Lisa J Woodhouse daniel Bereczki Hanne K Christensen Ronan Collins John Gommans Christina Kruuse George Ntaios Serefnur Ozturk Stephen Phillips Stuart Pocock Szabolcs Szatmari Joanna Wardlaw Nikola Sprigg Philip M Bath Stroke Trials Unit Division of Clinical NeuroscienceUniversity of NottinghamNottinghamUK Department of Neurology Semmelweis UniversityBudapestHungary Bispebjerg Hospital and University of Copenhagen University of CopenhagenCopenhagenDenmark Department of Geriatric and Stroke Medicine Adelaide and Meath HospitalDublinIreland Department of Medicine Hawke's Bay HospitalCamberleyNew Zealand Department of Neurology Herlev Gentofte HospitalUniversity of CopenhagenCopenhagenDenmark Department of Medicine Larissa University HospitalUniversity of ThessalyVolosGreece Department of Neurology Selcuk University Medical FacultyKonyaTurkey Department of Neurology Queen Elizabeth II Health Sciences CentreHalifaxNova ScotiaCanada Medical Statistics Unit London School of Hygiene&Tropical MedicineLondonUK Department of Neurology George Emil Palade University of MedicinePharmacyScience and Technology of Târgu MureșTargu MuresRomania Centre for Clinical Brain Sciences University of EdinburghEdinburghUK Stroke Nottingham University Hospitals NHS TrustNottinghamUK
Introduction Nitrate-induced headache is common and may signify responsive cerebral *** assessed the relationship between nitrate headache and outcome in patients with acute *** and methods Patients were those randomi... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
内部生态系统反馈加重了固氮蓝藻细菌藻华并使波罗的海管理复杂化
收藏 引用
AMBIO-人类环境杂志 2007年 第2期36卷 178-185页
作者: emil Vahtera daniel J.Conley Bo G.Gustafsson Harri Kuosa Heikki Pitknen Oleg P.Savchuk Timo Tamminen Markku Viitasalo Maren Voss Norbert Wasmund Fredrik Wulff 陈欣然 芬兰海洋研究院 隆德大学地圈生物圈中心 哥德堡大学地球科学中心 芬兰首都赫尔辛基大学Tvrminne动物站 芬兰环境研究院 瑞典斯德哥尔摩大学系统生态学系 芬兰环境研究院(SYKE) FIMR WarnemUünde的波罗的海研究院生物海洋学系 Warnemünde的波罗的海研究院 斯德哥尔摩大学系统生态学系
波罗的海的富营养化可能已潜在地增加了蓝藻细菌藻华发生的频率和规模。富营养化导致有机沉积物的增加,底层缺氧状况的加剧以及随后的系统内磷负荷的加重。此外,低氧水体积呈现与无机氮库负相关的关系,提示随低氧程度的增加,总氮的消除... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Improving ITS sequence data for identification of plant pathogenic fungi
收藏 引用
Fungal Diversity 2014年 第4期67卷 11-19页
作者: R.Henrik Nilsson Kevin D.Hyde Julia Pawlowska Martin Ryberg Leho Tedersoo Anders Bjornsgard Aas Siti A.Alias Artur Alves Cajsa Lisa Anderson Alexandre Antonelli A.Elizabeth Arnold Barbara Bahnmann Mohammad Bahram Johan Bengtsson-Palme Anna Berlin Sara Branco Putarak Chomnunti Asha Dissanayake Rein Drenkhan Hanna Friberg Tobias Guldberg Froslev Bettina Halwachs Martin Hartmann Beatrice Henricot Ruvishika Jayawardena Ari Jumpponen Havard Kauserud Sonja Koskela Tomasz Kulik Kare Liimatainen Bjorn D.Lindahl daniel Lindner Jian-Kui Liu Sajeewa Maharachchikumbura Dimuthu Manamgoda Svante Martinsson Maria Alice Neves Tuula Niskanen Stephan Nylinder Olinto Liparini Pereira Danilo Batista Pinho Teresita M.Porter Valentin Queloz Taavi Riit Marisol Sánchez-García Filipe de Sousa emil Stefańczyk Mariusz Tadych Susumu Takamatsu Qing Tian Dhanushka Udayanga Martin Unterseher Zheng Wang Saowanee Wikee Jiye Yan Ellen Larsson Karl-Henrik Larsson Urmas Koljalg Kessy Abarenkov Department of Biological and Environmental Sciences University of GothenburgBox 46140530 GothenburgSweden Institute of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Department of Plant Systematics and Geography Faculty of BiologyUniversity of WarsawAl.Ujazdowskie 400-478 WarsawPoland Department of Organismal Biology Uppsala UniversityNorbyvagen 18D75236 UppsalaSweden Institute of Ecology and Earth Sciences University of TartuLai 40Tartu 51005Estonia Microbial Evolution Research Group University of OsloBlindernveien 310371 OsloNorway Institute of Biological Sciences University of Malaya50603 Kuala LumpurMalaysia Department of Biology CESAMUniversity of Aveiro3810-193 AveiroPortugal School of Plant Sciences The University of Arizona1140 E South Campus DriveForbes 303TucsonAZ 85721USA Laboratory of Environmental Microbiology Institute of Microbiology ASCRVídeňská108314220 Prague 4Czech Republic Department of Infectious Diseases Institute of BiomedicineSahlgrenska AcademyUniversity of GothenburgGuldhedsgatan 1041346 GoteborgSweden Department of Forest Mycology and Plant Pathology Swedish University of Agricultural SciencesBox 702675007 UppsalaSweden University of California at Berkeley 321 Koshland Hall University of CaliforniaBerkeleyCA 94720-3102USA Agriculture and Forestry Sciences Beijing 100097China Institute of Forestry and Rural Engineering Estonian University of Life SciencesKreutzwaldi551014 TartuEstonia Natural History Museum of Denmark Øster Voldgade 5-71350 København KDenmark Institute for Genomics and Bioinformatics Graz University of Technology8010 GrazAustria Core Facility Bioinformatics Austrian Centre of Industrial Biotechnology8010 GrazAustria Forest Soils and Biogeochemistry Swiss Federal Research Institute WSLZuercherstrasse 1118903 BirmensdorfSwitzerland Molecular Ecology Institute for Sustainability SciencesAgroscopeReckenholzstrasse 191
Plant pathogenic fungi are a large and diverse assemblage of eukaryotes with substantial impacts on natural ecosystems and human *** taxa often have complex and poorly understood life cycles,lack observable,discrimina... 详细信息
来源: 维普期刊数据库 维普期刊数据库 评论
热文点评原文摘要
收藏 引用
中华医院感染学杂志 2018年 第12期28卷 F0003-F0003页
作者: Deverick J Anderson Luke F Chen David J Weber Rebekah W Moehring Sarah S Lewis Patricia F Triplett Michael Blocker Paul Becherer J Conrad schwab Lauren P Knelson Yuliya Lokhnygina William A Rutalo Hajimori Kanamori Marina F Gergen daniel J Sexton CDC Prevention Epicenters Program
中文:背景患者入院后可从不当消毒的环境表面获得多药耐药菌和艰难梭菌。本文确定了3种强化的终末消毒(入住同一病房的两名患者之间的消毒)策略,对感染耐甲氧西林金黄色葡萄球菌(MRSA)、耐万古霉素肠球菌(VRE)、艰难梭菌(CD)... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
Feasibility and physics potential of detecting ^(8)B solar neutrinos at JUNO
收藏 引用
Chinese Physics C 2021年 第2期45卷 93-110页
作者: Angel Abusleme Thomas Adam Shakeel Ahmad Sebastiano Aiello Muhammad Akram Nawab Ali Fengpeng An Guangpeng An Qi An Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Burin Asavapibhop João Pedro Athayde Marcondes de André Didier Auguste Andrej Babic Wander Baldini Andrea Barresi Eric Baussan Marco Bellato Antonio Bergnoli Enrico Bernieri David Biare Thilo Birkenfeld Sylvie Blin David Blum Simon Blyth Anastasia Bolshakova Mathieu Bongrand Clément Bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Max Buesken Mario Buscemi Jose Busto Ilya Butorov Anatael Cabrera Hao Cai Xiao Cai Yanke Cai Zhiyan Cai Antonio Cammi Agustin Campeny Chuanya Cao Guofu Cao Jun Cao Rossella Caruso Cédric Cerna Jinfan Chang Yun Chang Pingping Chen Po-An Chen Shaomin Chen Shenjian Chen Xurong Chen Yi-Wen Chen Yixue Chen Yu Chen Zhang Chen Jie Cheng Yaping Cheng Alexander Chepurnov Davide Chiesa Pietro Chimenti Artem Chukanov Anna Chuvashova Gérard Claverie Catia Clementi Barbara Clerbaux Selma Conforti Di Lorenzo daniele Corti Salvatore Costa Flavio Dal Corso Christophe De La Taille Jiawei Deng Zhi Deng Ziyan Deng Wilfried Depnering Marco Diaz Xuefeng Ding Yayun Ding Bayu Dirgantara Sergey Dmitrievsky Tadeas Dohnal Georgy Donchenko Jianmeng Dong Damien Dornic Evgeny Doroshkevich Marcos Dracos Frédéric Druillole Shuxian Du Stefano Dusini Martin Dvorak Timo Enqvist Heike Enzmann Andrea Fabbri Lukas Fajt Donghua Fan Lei Fan Can Fang Jian Fang Marco Fargetta Anna Fatkina Dmitry Fedoseev Vladko Fekete Li-Cheng Feng Qichun Feng Richard Ford Andrey Formozov Amélie Fournier Haonan Gan Feng Gao Alberto Garfagnini Alexandre Göttel Christoph Genster Marco Giammarchi Agnese Giaz Nunzio Giudice Franco Giuliani Maxim Gonchar Guanghua Gong Hui Gong Oleg Gorchakov Yuri Gornushkin Marco Grassi Christian Grewing Maxim Gromov Vasily Gromov Minghao Gu Xiaofei Gu Yu Gu Mengyun Guan Nunzio Guardone Maria Gul Cong Guo Jingyuan Guo Wanlei Guo Xinheng Guo Yuhang Guo Paul Hackspacher Caren Hagner Ran Han Yan Yerevan Physics Institute YerevanArmenia UniversitéLibre de Bruxelles BrusselsBelgium Universidade Estadual de Londrina LondrinaBrazil Pontificia Universidade Catolica do Rio de Janeiro RioBrazil Pontificia Universidad Católica de Chile SantiagoChile Universidad Tecnica Federico Santa Maria ValparaisoChile Beijing Institute of Spacecraft Environment Engineering BeijingChina Beijing Normal University BeijingChina China Institute of Atomic Energy BeijingChina Institute of High Energy Physics BeijingChina North China Electric Power University BeijingChina School of Physics Peking UniversityBeijingChina Tsinghua University BeijingChina University of Chinese Academy of Sciences BeijingChina Jilin University ChangchunChina College of Electronic Science and Engineering National University of Defense TechnologyChangshaChina Chongqing University ChongqingChina Dongguan University of Technology DongguanChina Jinan University GuangzhouChina Sun Yat-Sen University GuangzhouChina Harbin Institute of Technology HarbinChina University of Science and Technology of China HefeiChina The Radiochemistry and Nuclear Chemistry Group in University of South China HengyangChina Wuyi University JiangmenChina Shandong University JinanChina Institute of Modern Physics Chinese Academy of SciencesLanzhouChina Nanjing University NanjingChina Guangxi University NanningChina East China University of Science and Technology ShanghaiChina School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghaiChina Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghaiChina Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuangChina Nankai University TianjinChina Wuhan University WuhanChina Xi’an Jiaotong University Xi’anChina Xiamen University XiamenChina School of Physics and Microelectronics Zhengzhou UniversityZhengzhouChina Institute of Physics National Chiao-Tung University Hsinchu National United University Miao-Li Department of Physics National T
The Jiangmen Underground Neutrino Observatory(JUNO)features a 20 kt multi-purpose underground liquid scintillator sphere as its main *** of JUNO's features make it an excellent location for^8B solar neutrino measureme... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论
JUNO sensitivity on proton decay p→νK^(+)searches
收藏 引用
Chinese Physics C 2023年 第11期47卷 7-22页
作者: Angel Abusleme Thomas Adam Shakeel Ahmad Rizwan Ahmed Sebastiano Aiello Muhammad Akram 安丰鹏 安琪 Giuseppe Andronico Nikolay Anfimov Vito Antonelli Tatiana Antoshkina Burin Asavapibhop João Pedro Athayde Marcondes de André Didier Auguste Nikita Balashov Wander Baldini Andrea Barresi Davide Basilico Eric Baussan Marco Bellato Antonio Bergnoli Thilo Birkenfeld Sylvie Blin David Blum Simon Blyth Anastasia Bolshakova Mathieu Bongrand Clément Bordereau Dominique Breton Augusto Brigatti Riccardo Brugnera Riccardo Bruno Antonio Budano Mario Buscemi Jose Busto Ilya Butorov Anatael Cabrera Barbara Caccianiga 蔡浩 蔡啸 蔡严克 蔡志岩 Riccardo Callegari Antonio Cammi Agustin Campeny 曹传亚 曹国富 曹俊 Rossella Caruso Cédric Cerna 常劲帆 Yun Chang 陈平平 Po-An Chen 陈少敏 陈旭荣 Yi-Wen Chen 陈义学 陈羽 陈长 程捷 程雅苹 Alexey Chetverikov Davide Chiesa Pietro Chimenti Artem Chukanov Gérard Claverie Catia Clementi Barbara Clerbaux Selma Conforti Di Lorenzo daniele Corti Flavio Dal Corso Olivia Dalager Christophe De La Taille 邓智 邓子艳 Wilfried Depnering Marco Diaz Xuefeng Ding 丁雅韵 Bayu Dirgantara Sergey Dmitrievsky Tadeas Dohnal Dmitry Dolzhikov Georgy Donchenko 董建蒙 Evgeny Doroshkevich Marcos Dracos Frédéric Druillole 杜然 杜书先 Stefano Dusini Martin Dvorak Timo Enqvist Heike Enzmann Andrea Fabbri Ulrike Fahrendholz 范东华 樊磊 方建 方文兴 Marco Fargetta Dmitry Fedoseev Li-Cheng Feng 冯启春 Richard Ford Amélie Fournier 甘浩男 Feng Gao Alberto Garfagnini Arsenii Gavrikov Marco Giammarchi Agnese Giaz Nunzio Giudice Maxim Gonchar 龚光华 宫辉 Yuri Gornushkin Alexandre Göttel Marco Grassi Christian Grewing Vasily Gromov 顾旻皓 谷肖飞 古宇 关梦云 Nunzio Guardone Maria Gul 郭聪 郭竞渊 郭万磊 郭新恒 郭宇航 Paul Hackspacher Caren Hagner 韩然 Yang Han Muhammad Sohaib Hassan 何苗 何伟 Tobias Heinz Patrick Hellmuth 衡月昆 Rafael Herrera 贺远强 侯少静 Yee Hsiung Bei-Zhen Hu 胡航 胡健润 胡俊 胡守扬 胡涛 胡宇翔 胡焯钧 黄春豪 黄桂鸿 黄翰雄 黄文昊 黄鑫 黄性涛 黄永波 惠加琪 霍雷 霍文驹 Cédric Huss Safeer Hussain Ara Ioannisian Roberto Isocrate Beatrice Jelmini Kuo-Lun Jen Ignacio Jeria 季筱璐 吉星曌 贾慧慧 贾俊基 蹇司玉 蒋荻 蒋炜 江晓山 金如意 荆小平 Cécile Jollet Jari Joutsenvaara Sirichok Jungthawan Leonidas Kalousis Philipp Ka Pontificia Universidad Católica de Chile SantiagoChile IPHC Universitéde StrasbourgCNRS/IN2P3F-67037 StrasbourgFrance Pakistan Institute of Nuclear Science and Technology IslamabadPakistan INFN Catania and Dipartimento di Fisica e Astronomia dell Universitàdi Catania CataniaItaly East China University of Science and Technology ShanghaiChina University of Science and Technology of China HefeiChina Joint Institute for Nuclear Research DubnaRussia INFN Sezione di Milano and Dipartimento di Fisica dell Universitàdi Milano MilanoItaly Department of Physics Faculty of ScienceChulalongkorn UniversityBangkokThailand IJCLab UniversitéParis-SaclayCNRS/IN2P391405 OrsayFrance Department of Physics and Earth Science University of Ferrara and INFN Sezione di FerraraFerraraItaly INFN Milano Bicocca and University of Milano Bicocca MilanoItaly INFN Sezione di Padova PadovaItaly III.Physikalisches Institut B RWTH Aachen UniversityAachenGermany Eberhard Karls Universität Tübingen Physikalisches InstitutTübingenGermany Institute of High Energy Physics BeijingChina SUBATECH Universitéde NantesIMT AtlantiqueCNRS-IN2P3NantesFrance Univ.Bordeaux CNRSLP2IUMR 5797F-33170 GradignanFrance Department of Physics National Taiwan UniversityTaipei Dipartimento di Fisica e Astronomia dell’Universitàdi Padova and INFN Sezione di Padova PadovaItaly University of Roma Tre and INFN Sezione Roma Tre RomaItaly Aix Marseille Univ CNRS/IN2P3CPPMMarseilleFrance Wuhan University WuhanChina INFN Milano Bicocca and Politecnico of Milano MilanoItaly National United University Miao-Li Dongguan University of Technology DongguanChina Tsinghua University BeijingChina Institute of Modern Physics Chinese Academy of SciencesLanzhouChina Institute of Physics National Yang Ming Chiao Tung UniversityHsinchu North China Electric Power University BeijingChina Sun Yat-Sen University GuangzhouChina Beijing Institute of Spacecraft Environment Engineering BeijingChina Universidade Estadual de Londrina LondrinaBrazil INFN Sez
The Jiangmen Underground Neutrino Observatory(JUNO)is a large liquid scintillator detector designed to explore many topics in fundamental *** this study,the potential of searching for proton decay in the p→νK^(+)mod... 详细信息
来源: 维普期刊数据库 维普期刊数据库 同方期刊数据库 同方期刊数据库 评论