Lay information mediary behavior uncovered: exploring how nonprofessionals seek health information for themselves and others online          下载免费PDF全文

Jennie A. Abrahamson  Karen E. Fisher  Anne G. Turner  Joan C. Durrance    Tammara Combs Turner 《Medical Library and Historical Journal》2008,96(4):310-323

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Advances in the phylogenesis of Agaricales and its higher ranks and strategies for establishing phylogenetic hypotheses     

Zhao RL  Desjardin DE  Soytong K  Hyde KD 《Journal of Zhejiang University. Science. B》2008,9(10):779-786

We present an overview of previous research results on the molecular phylogenetic analyses in Agaricales and its higher ranks (Agaricomycetes/Agaricomycotina/Basidiomycota) along with the most recent treatments of taxonomic systems in these taxa. Establishing phylogenetic hypotheses using DNA sequences, from which an understanding of the natural evolutionary relationships amongst clades may be derived, requires a robust dataset. It has been recognized that single-gene phylogenies may not truly represent organismal phylogenies, but the concordant phylogenetic genealogies from multiple-gene datasets can resolve this problem. The genes commonly used in mushroom phylogenetic research are summarized.  相似文献   

On rubrication of the division <Emphasis Type="Italic">spintronics</Emphasis> in a separate edition of the abstract journal of the VINITI RAS <Emphasis Type="Italic">solid-state physics</Emphasis> (<Emphasis Type="Italic">Electrical Properties</Emphasis>)     

N. M. Builova  E. M. Epshtein  V. G. Shamaev 《Scientific and Technical Information Processing》2008,35(1):28-29

The necessity for publishing a separate abstract journal on spintronics, which is a new, rapidly developing branch of physics, is substantiated. The interest in spintronics, which is the study of fundamental processes involving the simultaneous transport of both electron charge and electron spins in solids, as well as the interaction of electrons with a magnetic grating, is determined not only by its fascinating prospects but also the results that have already achieved. The spin and charge “degrees of freedom” open possibilities for the creation of semiconducting devices with parameters that are much superior to the existing ones and also the construction of devices that do not have analogues at present. First of all, this will permit problems of information transmission and processing to be solved in a new way. A detailed rubrication on spintronics is given in order to discuss the possibility of publishing a separate edition of an abstract journal devoted to spintronics.  相似文献   

Analysis and lessons learned instituting an instant messaging reference service at an academic health sciences library: the first year     

Kipnis DG  Kaplan GE 《Medical reference services quarterly》2008,27(1):33-51

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The efficiency of searches for randomized controlled trials in the International Journal of Eating Disorders: a comparison of handsearching,EMBASE and PsycLIT     

PHILLIPA J. HAY  CLIVE E. ADAMS  CAROL LEFEBVRE 《Health information and libraries journal》1996,13(2):91-96

A guest editorial     

Love E 《Bulletin of the Medical Library Association》1978,66(1):64

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An SDILINE profile oriented to patient care.     

M E Funk 《Bulletin of the Medical Library Association》1978,66(2):223-227

Hospital physicians naturally require current medical information in order to treat their patients. An objectively obtained SDILINE storesearch was devised to obtain this information. A rank-ordered list of hospital discharge diagnoses, coded with ICDA terms, was translated into MeSH. The top two Bradford zones of journals defined as useful at the University of Missouri--Kansas City were ANDed to these MeSH terms. Citations retrieved from the storesearch are input into an in-house computerized data base. The method can be easily used by other medical or hospital libraries without access to computers.  相似文献   

Pediatrics in an eighteenth century remedy book.     

E Brodman 《Bulletin of the Medical Library Association》1978,66(1):36-46

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THE GRAMMAR OF JUSTIFICATION     

T. E. BURKE 《Philosophical Books》1977,18(1):42-43

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Indexing consistency in MEDLINE   总被引：3，自引：0，他引：3  

M E Funk  C A Reid 《Bulletin of the Medical Library Association》1983,71(2):176-183

The quality of indexing of periodicals in a bibliographic data base cannot be measured directly, as there is no one "correct" way to index an item. However, consistency can be used to measure the reliability of indexing. To measure consistency in MEDLINE, 760 twice-indexed articles from 42 periodical issues were identified in the data base, and their indexing compared. Consistency, expressed as a percentage, was measured using Hooper's equation. Overall, checktags had the highest consistency. Medical Subject Headings (MeSH) and subheadings were applied more consistently to central concepts than to peripheral points. When subheadings were added to a main heading, consistency was lowered. "Floating" subheadings were more consistent than were attached subheadings. Indexing consistency was not affected by journal indexing priority, language, or length of the article. Terms from MeSH Tree Structure categories A, B, and D appeared more often than expected in the high-consistency articles; whereas terms from categories E, F, H, and N appeared more often than expected in the low-consistency articles. MEDLINE, with its excellent controlled vocabulary, exemplary quality control, and highly trained indexers, probably represents the state of the art in manually indexed data bases.  相似文献