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asbryobvrz · Wysłany: Nie 9:43, 27 Mar 2011

Derwent Biotechnology Abstracts database and its retrieval

-NkOIX3GyABSTRAUI 'S) CD-ROM Department of Derwent launched a UK biotechnology and patent literature databases,[link widoczny dla zalogowanych], covering genetic engineering, biochemical engineering' 璺 mouth cell culture, waste treatment and other aspects, the literature collected from more than 1,200 journals, conference proceedings and other patent documents, large documents, and have abstracts, of which 25% of patent documents. CD-ROM contains the contents of the last 12 years, quarterly update, the disc is a biotechnology research and development of the indispensable tools of the database and retrieve one set of summer field Derwent Biotechnology Abstracts database using a total of ten fields of 20: AN *: AccessionNumber Entry No. PT *: PublicationType publication types IJA *: Language Language AU: Author (s) of the LO: Location. fw0rk Work Address CA: CorporateAffiliates Author CO *: CODEN / DErwentnumberCODEN / Derwent Code JL: Jourr ~ IReference journal TI: Tide Title ST: SubsidiaryTitle subtitle IW: Indexwor the key words AB: AbstractSummary Abstract IM: ImageLink image GE *: GraphicsExist image CL} aas9 cool Category PN} PatentNumber Patent No. XR: CmssReference cross reference PR: PatentPriority patent priority PY *: Publicat [onYear Publication AY *: Acces-~ onYear entry ten years in 20 fields, each field contains specific content, the user can keyword,[link widoczny dla zalogowanych], keywords,[link widoczny dla zalogowanych], free words such as multi-channel,[link widoczny dla zalogowanych], full search. With Second, by professional category of the set the database into 12 categories: including genetic engineering and fermentation,[link widoczny dla zalogowanych], engineering, analysis, medicine, agriculture, food and fuel and mining, and other chemicals, cell culture, bio-catalysis, purification, waste disposal and the environment. Also has 29 categories under the ten subclasses, a more detailed response to the professional setting. Searching through related categories, particularly the professional user to build their own database. Third, the basic retrieval method to retrieve the disc environment: Derwent Biotechnology Abstracts database is the U.S. silver products, and its operating environment with domestic MEDLINE CD-ROM about the more common, it requires a 386 PC or compatible, 31 or higher DOS version of the space required to run at more than 2500K, the necessary application software, such as SPIRS and so on. Derwent Biotechnology Abstracts CD mainly use the keyword search, almost all of the fields can be used to search, the search type can be: a word or phrase; letters or numbers; put together phrases j logical phrases; word report; ago search number and so on. Derwent Biotechnology Abstracts CD-ROM can also use regulations such as the operator AND, ORNOT, WITH, NEAR, IN ,>,<,= and first-class retrieval. Specific operation, with the following three search methods: 1. Vertical search: enter search terms by direct retrieval. This method is simple, easy to learn. If you choose the search terms more appropriate, accurate, and the vertical search is the most direct and rapid retrieval. However, if the search were unskilled or professional users keywords are not accurate, then the recall rate, precision will be affected, the need for multiple test search, to achieve the goal. 2 Lateral Search: in view of the retrieved documents process. Appear in the literature, you find useful to make an additional search term. Horizontal-type retrieval is an effective complement to the original search of the literature recall and precision helpful. Horizontal vertical search with the same search often use 3. Index Search: search the index through the literature database. Enter a search type, through the index (INDEX), can be retrieved with this all-style-related search terms, searchers can choose according to need, in particular, convenient and practical.