Recerca biolgica a la Web 1 Bases de

Recerca biològica a la Web 1. Bases de dades de bibliografia científica © 2006

L’art de trobar informació a la Web • Internet és una font d’informació tremendament útil per a la recerca biològica • . . . però el Google em dóna milions d’entrades a les meves cerques, i la que jo vull és la número 342. . . ! • On puc anar a trobar la informació que necessito? • Com put jutjar quina informació és fiable? © 2006 Plataforma Bioinformàtica de la UAB

Bases de dades bibliogràfiques Organització dels articles publicats a les revistes d’àmbit científic. –

Operadors lògics o booleans • AND / + keyword 1 i keyword 2 » human AND mouse • OR / ^ keyword 1 o keyword 2 » human OR mouse • NOT / - keyword 1 però no keyword 2 » mammal NOT human • ? /* mots parcials (inici / final) » ? ribonucleotide • “” deoxy* frases » “major histocompatibility complex” • (. . . ) estructures complexes » (mhc AND mammal) NOT human © 2006 Plataforma Bioinformàtica de la UAB

Entrez Pub. Med Search fields • Exemple: Lander+ES[AU] = “Lander ES”[AU] © 2006 Plataforma

Exercici bàsic • Find citations to articles about female genital diseases published in 2006 by Edward W. Cowen or Giovanni Parmigiani. female genital diseases AND 2006[DP] AND ("Cowen EW"[AU] OR "Parmigiani G"[AU]) © 2006 Plataforma Bioinformàtica de la UAB

Medical Subject Headings (Me. SH) • Vocabulari controlat de mots mèdics • Estructura jeràrquica • Garantitza una correcta indexació dels documents del MEDLINE / Pub. Med • http: //www. nlm. nih. gov/meshhome. html 1. Cerques 2. Combinació de mots © 2006 Plataforma Bioinformàtica de la UAB 3. Altres característiques

Exercici avançat • Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 1: Click on Preview/Index. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 2: Go to the "Add Term(s) to Query or View Index" section of the screen and use the All Fields pull-down to select the Me. SH Terms search field. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 3: Enter your first term (female genital diseases) in the text box. Click Preview. Pub. Med adds the term to the query box and previews the number of search results. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 4: Return to the "Add Term(s) to Query or View Index" section of the screen. Notice that the search field is set to Me. SH Terms. Enter your next term (adolescents) in the text box. Click Preview. Pub. Med adds the term to the query box with an AND operator and previews the number of search results (i. e. , female genital diseases AND adolescents). © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 5: Return to the "Add Term(s) to Query or View Index" section of the screen. Notice that the search field is still set to Me. SH Terms. Enter your next term (health education) in the text box. This time, click Index. Pub. Med displays the Me. SH Terms Index beginning with the term health education. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 6: Select the terms health education/methods and health education/trends by holding down the Ctrl key and clicking on the terms. Click Preview. Pub. Med automatically ORs the selected terms together, ANDs them to the query, and previews the number of search results. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. Step 7: Click on Limits. Use the Published in the Last date, and select Specify Date Range to choose articles published from 1990 to present (i. e. , From: 1990). Use the Language menu to select English. Click Go. © 2006 Plataforma Bioinformàtica de la UAB

Exercici avançat Find citations to articles about female genital diseases in adolescents and health education methods and trends used to educate this group. Limit the results to citations published in English since 1990. © 2006 Plataforma Bioinformàtica de la UAB