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Napole
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PostSubject: 2_Info   Mon Dec 04, 2006 10:56 pm

Medline
What is Medline
primary component of PubMed®
part of the Entrez series of databases provided by NLM's National Center for Biotechnology Information (NCBI).
NLM's bibliographic database of citations and abstracts from nearly 4800 biomedical journals published in the United States and worldwide.
All citations in MEDLINE are assigned Medical Subject Headings (MeSH®) from NLM's controlled vocabulary to assist users in their searches.
Time coverage: generally 1966 to the present, with some older material.
Source: Citations from approximately 4,800 worldwide journals currently in 30 languages;
40 languages for older journals.
Broad subject coverage: biomedicine and health - life sciences, behavioral sciences, chemical sciences, and bioengineering biology, environmental science, marine biology, plant and animal science as well as biophysics and chemistry. scholarly journals; a small number of newspapers, magazines, and newsletters English abstracts written by authors of the articles.
MedlinePlus
What is MedlinePlus?
http://medlineplus.gov/
National Library of Medicine's web site for consumer health information.
What information is in MedlinePlus?
Health Topics
Medical Encyclopedia
Interactive Health Tutorials
Drugs, Supplements, and Herbal Information
Current Health News
Dictionary
Directories
How are links selected for MedlinePlus?
a selective list of authoritative health information sources from NIH and other government and professional organizations in the U.S.
mostly U.S. resources.
MedlinePlus facts
Resources are updated nightly (date on page indicates date of most recent change)
Released October 22, 1998
Includes over 700 topics


PubMed
What is Pubmed?
Web address: PubMed.gov
developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine® (NLM).
Provides free access to MEDLINE, NLM's database of more than 13 million bibliographic citations and abstracts in the fields of medicine, nursing, dentistry, veterinary medicine, health care systems, and preclinical sciences.
Links to many sites providing full text articles and other related resources.
Provides a Clinical Queries search filters page.
In addition to MEDLINE citations, PubMed also contains:
OLDMEDLINE for pre-1966 citations.
Citations to articles that are out-of-scope (e.g., covering plate tectonics or astrophysics) from certain MEDLINE journals, primarily general science and general chemistry journals, for which the life sciences articles are indexed for MEDLINE.
Citations that precede the date that a journal was selected for MEDLINE indexing (when supplied electronically by the publisher).
Some life science journals that submit full text to PubMedCentral® and may not have been recommended for inclusion in MEDLINE although they have undergone a review by NLM, and some physics journals that were part of a prototype PubMed in the early to mid-1990's.
PubMed is Easy to Use
Simply enter your search topics - one or more terms - and click Go
PubMed can be searched using MeSH terms, author names, title words, text words or phrases, journal names, or any combination of these.
Retrieved citations are displayed and their associated abstracts can be selected for viewing.
A unique feature of PubMed is the ability to instantly find related articles for any citation.
PubMed's LinkOut feature provides access to a wide variety of relevant web-accessible online resources, including full-text publications, biological databases, consumer health information, research tools, and more.
Currently citations from more than 4,600 journals are linked to the full-text on publishers' web sites.
Users may have to register, or there may be a fee or subscription required to access the full-text.
Different Coverage
MEDLINE is the largest component of PubMed, the U.S. National Library of Medicine's (NLM®) database of biomedical citations and abstracts that is searchable on the Web (http://pubmed.gov) at no cost.
MEDLINE covers over 4,800 journals published in the United States and more than 70 other countries primarily from 1966 to the present.
MEDLINE includes references to articles indexed with terms from NLM's controlled vocabulary, MeSH®. Citations in MEDLINE are from journals selected for inclusion in the database.
In addition to MEDLINE citations, PubMed also contains:
OLDMEDLINE for pre-1966 citations.
Citations to articles that are out-of-scope (e.g., covering plate tectonics or astrophysics) from certain MEDLINE journals, primarily general science and general chemistry journals, for which the life sciences articles are indexed for MEDLINE.
Some life science journals that submit full text to PubMedCentral® and may not have been recommended for inclusion in MEDLINE although they have undergone a review by NLM, and some physics journals that were part of a prototype PubMed in the early to mid-1990's.
Other PubMed services include:
Links to many sites providing full text articles and other related resources
A clinical queries search filter
Links to see citations to related articles
Single citation matcher
The ability to save and automatically update searches
A spell checker
Filters to group search results
Medical Subject Headings (MeSH®)
The Thesaurus
MeSH is the National Library of Medicine's controlled vocabulary thesaurus.
It consists of sets of terms naming descriptors in a hierarchical structure that permits searching at various levels of specificity.
MeSH descriptors are arranged in both an alphabetic and a hierarchical structure.
At the most general level of the hierarchical structure are very broad headings such as "Anatomy" or "Mental Disorders." More specific headings are found at more narrow levels of the eleven-level hierarchy, such as "Ankle" and "Conduct Disorder."
There are 22,997 descriptors in MeSH.
In addition to these headings, there are more than 151,000 headings called Supplementary Concept Records (formerly Supplementary Chemical Records) within a separate thesaurus.
There are also thousands of cross-references that assist in finding the most appropriate MeSH Heading, for example, Vitamin C see Ascorbic Acid. These additional entries include 24,050 printed see references and 112,012 other entry points.
MeSH Applications : The MeSH thesaurus is used by NLM for indexing articles from 4,800 of the world's leading biomedical journals for the MEDLINE/PubMED® database.
Also used for the NLM-produced database that includes cataloging of books, documents, and audiovisuals acquired by the Library.
Each bibliographic reference is associated with a set of MeSH terms that describe the content of the item.
Similarly, search queries use MeSH vocabulary to find items on a desired topic.
Establishing and Updating MeSH : The Medical Subject Headings Section staff continually revise and update the MeSH vocabulary.
MeSH Publication : MeSH, in machine-readable form, is provided at no charge via electronic means.
The MeSH Website http://www.nlm.nih.gov/mesh is the central access point for additional information about MeSH and for obtaining MeSH in electronic form.


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