文献检索6要点.doc

生物医学数据库实习题 实习目的： 1.请先熟悉PUBMED的检索界面、检索功能及检索方法。 2.针对一个检索题目，掌握检索步骤与检索策略(特别是检索词与检索式)。 3.完成实习报告 实习要求：1、请同学们独立完成，把答案直接粘贴在问题下面。 2、写出检索入口、检索词、检索式及检索结果的篇数。PubMed 1.检索我校被PubMed收录的文献Text availability=Free full text 4.检索结果：164篇。 2.请查找近年发表的有关hypertension）语种为英文随机对照实验有免费全文的文献，任选两篇以（summary）的。hypertension filters: languages=English Text availability＝free full text available　 publication dates=5 years Type of Article= Randomized Controlled Trial （3）检索结果1491篇 1: Greenway F, Liu Z, Yu Y, Gupta A. A clinical trial testing the safety and　efficacy of a standardized Eucommia ulmoides Oliver bark extract to treat　hypertension. Altern Med Rev. 2011 Dec;16(4):338-47. PubMed PMID: 2: Richmond RL, Wilhelm KA, Indig D, Butler TG, Archer VA, Wodak AD.　Cardiovascular risk among Aboriginal and non-Aboriginal smoking male prisoners:　inequalities compared to the wider community. BMC Public Health. 2011 Oct10;11:783. PubMed PMID: PubMed Central PMCID: PMC3198711. 3. 胃溃疡（gastric ulcer）是否是主题词，如果不是，它的主题词是什么？它的树形结构是什么？检索有关胃溃疡饮食疗法或病理学的研究并且为主要主题词文献，并任选两篇以文摘(abstract )的格式保存。 步骤：（1）进入Pubmed的Mesh database检索界面 gastric ulcer不是主题词，它的主题词为：Stomach Ulcer 　树形结构： All MeSH Categories Diseases Category Digestive System Diseases Gastrointestinal Diseases Peptic Ulcer Stomach Ulcer All MeSH Categories Diseases Category Digestive System Diseases Gastrointestinal Diseases Stomach Diseases Peptic Ulcer Stomach Ulcer 组配副主题词：drug therapy与pathology，并且限定：Restrict to MeSH Major Topic. 检索表达式：( Stomach Ulcer/drug therapy[Majr] OR Stomach Ulcer/pathology[Majr] ) 检索结果：3304篇。 1. Asian Pac J Trop Med. 2012 Aug;5(8):610-5. doi: 10.1016/S1995-7645(12)60126-6. Protective effect of Luffa acutangula extracts on gastric ulceration in NIDDM rats: role of gastric mucosal glycoproteins and antioxidants. Pimple BP, Kadam PV, Patil MJ. P. E. Societys Modern College of Pharmacy, Nigdi, Pune, Maharashtra, India. bhushanppimple@ OBJECTIVE: To study the comparative gastroprotective effec