I. Introduction of Pubmed Database
Pubmed is a free online medical literature database developed and maintained by the National Library of Medicine (NLM), which contains biomedical literature from all over the world, including journal articles, books and conference papers. At present, Pubmed database has become one of the most important literature databases in the global biomedical research field.
Second, Pubmed database retrieval steps
1. Defines the purpose and keywords of the search.
Before searching Pubmed database, it is necessary to make clear the purpose and keywords of the search. The purpose can be to understand the research status of a certain field, explore the solution to a certain problem, and find new research directions. Keywords refer to words related to the purpose of retrieval, as well as terms, synonyms and abbreviations in specific fields. Should be fully considered.
2. Go to Pubmed database website
Enter the URL "https://pubmed.ncbi.nlm.nih.gov/"in the browser to enter the website of Pubmed database.
3. Enter the keyword to search.
Enter keywords in the search box on the homepage of the website and click the "Search" button to search.
4. Screening and classification
The retrieval results will be sorted by relevance, and users can filter and sort according to their own needs, such as publication date, journal name, research type and so on.
5. View and download literature
Users can click on the title in the search results to view the detailed information and abstract of the literature. If you need to download the full text, you can click the link to enter the periodical website where the literature is located.
Three. Matters needing attention in Pubmed database retrieval
1. The selection and combination of keywords should give full consideration to technical terms, synonyms, abbreviations, etc. , so as to cover relevant literature as much as possible.
2. Before retrieval, it is necessary to know the publishing year, research type and language of relevant documents, so as to better screen and sort the retrieval results.
3. In the retrieval results, we should carefully check the abstract and detailed information of the literature in order to better understand its research content and quality.
4. When downloading files, you should abide by relevant copyright laws and regulations, and don't infringe the intellectual property rights of others.
Fourth, the advantages and limitations of Pubmed database retrieval
1. Advantages:
(1) contains biomedical literature from all over the world, covering a wide range.
(2) Provide rich retrieval functions and screening conditions, and search efficiently according to requirements.
(3) Provide detailed literature information and abstracts for users to understand the research content and quality.
(4) Free online, convenient for users to search anytime and anywhere.
2. Limitations:
(1) only includes English and some non-English biomedical literature, and other languages are not covered enough.
(2) The quality of literature is uneven, which needs careful screening and evaluation by users.
(3) Because Pubmed database is maintained by the National Library of Medicine, there may be some regional deviation.