© Copyright Ebiointel,SL 2006 Cerques Bases de datos bibliográficas

© Copyright Ebiointel,SL 2006 Cerques lògiques Búsquedas por palabras o frases Búsquedas lógicas Operadores lógicos o booleans AND : + OR : ^ NOT : - ? / * : comodines

© Copyright Ebiointel,SL 2006 Cerques 2 Operadores booleans AND / + ambos términos ferric AND uptake OR / ^ OR / ^ uno u otro termino OR ferric OR uptake NOT / - NOT / - uno sin el oltro ANDNOT (ferric AND uptake) NOT human ? / * ? / * términos parciales inicial i final : ?ribonucleotide i deoxy* “” “…” frases ”” ”ferric uptake”

© Copyright Ebiointel,SL 2006 Cerques 3 Otros Operadores booleans Use W/nn to specify the proximity between the terms. The W/nn does not specify the word order--either word may appear first. (Note: W represents within and nn represents the number of words from 1 to 255.) For example: pain W/15 morphine In determining the value of the nn, consider the following as a rule of thumb: - To find terms in the same phrase, use W/3, W/4, or W/5. - To find terms in the same sentence, use W/15. - To find terms in the same paragraph, use W/50. *Use NOT W/nn to find articles in which the first word appears. The second word may also appear, but not within the specified number of words. *Use PRE/nn to find two words when the first word must precede the second word by a specified number of words. (Note: PRE represents precedes and nn represents the number of words from 1 to 255.) For example: behavioural PRE/3 disturbances would find articles in which behavioural precedes disturbances by three or less words Use W/nn to specify the proximity between the terms. The W/nn does not specify the word order--either word may appear first. (Note: W represents within and nn represents the number of words from 1 to 255.) For example: pain W/15 morphine In determining the value of the nn, consider the following as a rule of thumb: - To find terms in the same phrase, use W/3, W/4, or W/5. - To find terms in the same sentence, use W/15. - To find terms in the same paragraph, use W/50. *Use NOT W/nn to find articles in which the first word appears. The second word may also appear, but not within the specified number of words. *Use PRE/nn to find two words when the first word must precede the second word by a specified number of words. (Note: PRE represents precedes and nn represents the number of words from 1 to 255.) For example: behavioural PRE/3 disturbances would find articles in which behavioural precedes disturbances by three or less words

© Copyright Ebiointel,SL 2006 Tag Etiquetas campos Etiquetas campos

© Copyright Ebiointel,SL 2006 MeSH (MeSH) Vocabulario controlado Garantiza una correcta indexación de los documentos Facilita las búsquedas al extender los términos a todos los relacionados

© Copyright Ebiointel,SL 2006 Exem cerq avna Ejemplos búsquedas con Tag’s pneumonia [mh] AND mortality [tw] pneumonia [mh] AND mortality [tw] Aquí buscará neumonía como término mesh (lo expandirá automáticamente) y mortalidad dentro de las palabras del texto. pneumonia [mh] AND mortality [sh:noexp] Aquí buscará neumonía como término mesh (lo expandirá automáticamente) y mortalidad como subencabezados pero tiene inhibida la autoexpansión. penumonia [majr] AND english [la] AND 1995 [dp] Aquí buscará los artículos en los que neumonía sea el tópico principal y el idioma vernáculo del artículo sea inglés en el año Si hubiera colocado...AND 1995:1999 [dp] buscaría entre los años 1995 y Las opciones para colocar fechas son los siguientes formatos: aaaa/mm/dd ó aaaa/mm ó aaaa, donde cada letra corresponde a un dígito.

© Copyright Ebiointel,SL 2006 MedLine Tutorial alternativo (es) Base bibliográfica de la National Library of Medicine

© Copyright Ebiointel,SL 2006 Altres motros Otros motores de búsqueda

© Copyright Ebiointel,SL 2006

© Copyright Ebiointel,SL 2006

Búsqueda exhaustiva dentro del “cuerpo” de las publicaciones ASM Journals online Revistas digitales UAB pagename=BibUAB%2FPage%2FTemplatePlanaBibUAB pagename=BibUAB%2FPage%2FTemplatePlanaBibUAB

© Copyright Ebiointel,SL 2006 TOCs Localización de revistas en CBUC