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Literature Searching What to do when a “Google� search is not enough?

Chemical Engineering Resources at Purdue University Libraries


Song Yu syu@purdue.edu Phone: 496-7279 Chemical Information Specialist Assist. Prof. of Library Sciences Purdue University

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


To Warm Up ‌ Ideas, common terms that we use when doing literature searches

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Structure of the literature and Channels of Communication

TERTIARY LITERATURE Information Retrieval Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Search Operators, Wildcards, and Parentheses ► ►

What are search operators?  AND, OR, NOT, SAME, NEAR What are wildcards? A B  ? = one character ► E.g. EN?OBLAST will search ENDOBLAST and ENTOBLAST C  * = zero to many characters ► E.g. Gene* will search Gene, Genes, General, Generation  Combination of ? and * ► E.g. CH?M* will search CHEMISTRY, CHEMIST, CHEMICAL, CHEMIE, CHIMICA … Note: different databases Parentheses have different wildcards.  (A or B) and C, (B and C) not A Check their Help file to find out what to use.

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


What is in a citation? ► Author ► Title ► Source/journal

► Enumeration

(volume/issue) ► Chronology (date) ► Pagination

Bibliographic Information Cui, Yi; Lieber, Charles M.. “Functional nanoscale electronic devices assembled using silicon nanowire building blocks." Science 291:5505 (2001): 851-3. Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Cited/Citing Reference ?@#&! â–ş Linking

paper

to the original cited

1994 1992

â–ş Linking

to papers which cite the same paper (Time Cited)

1991

1988 1987

â–ş Finding

1984

related papers 1982

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu

1988

Known Paper

1957

Cited Paper

1987

1957

New paper retrieved via cited reference searching


Major Databases in Chemical Engineering ► COMPENDEX

(OVID) ► SciFinder Scholar (CAS) ► Web Of Science (ISI)

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Major Databases in Chemical Engineering â–ş COMPENDEX

(OVID)

Engineering and technical literature, as well as related fields in science and management. The records in the database are drawn from over 2,600 published journals, conference proceedings and individual conference papers, technical reports, monographs, and other materials.

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Major Databases in Chemical Engineering â–ş SciFinder

Scholar (CAS)

Collection of Chemical Databases: CAPlus, CASREACT, CHEMCATS, CHEMLIST, Registry, Medline Chemistry Plus a Whole Lot More! Agriculture Science / Biology and Life Sciences / Engineering Sciences / Food Sciences / General Chemistry / Geological Sciences / Material Sciences / Medical Sciences / Physics / Polymer Science Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Major Databases in Chemical Engineering â–ş Web

Of Science (ISI)

Accesses multidisciplinary databases of bibliographic information from thousands of scholarly journals. The databases are indexed so you can search for specific articles by subject, author, journal, and/or author address. You can also search the databases for articles that cite a known author or work.

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Access to the Databases ► ► ►

► ►

Spring 2003

http://www.lib.purdue.edu/eresources/index.html choose “By Title” COMPENDEX (OVID)  Web based, need your Purdue ID SciFinder Scholar (CAS)  Server/Client based  Windows Terminal Server  To download the primary client software, go to http://www.lib.purdue.edu/wts  Java client can not print and save your searches Web Of Science (ISI)  IP based Off campus access  Libraries Proxy server  http://www.lib.purdue.edu/proxy Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


SciFinder Scholar Coverage back to 1907 by one search!  CAplus. 1907 ~, +21.5 mil documents from +9000 journals-Updated daily with new citations, weekly with indexed records

    

CASREACT. 1974+, +6 mil single and multi-step reactions CHEMCATS. +5.3 mil Commercial chemicals CHEMLIST. over 227,000 Regulated chemicals Registry. 1965+, 20.3 mil substances, 21.8 mil biosequences Medline. 1958+, 11 mil biomedical citations (including OLDMEDLINE)

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Web of Science ► 8,500

peer-reviewed journals in science, social science, arts and humanities worldwide   

Science Citation Index (6014 Journal titles) 230 Disciplines 1350 in chemistry, 122 in chemical engineering

► Update

weekly ► Purdue has access from 1977 Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Compendex ► Index

+5000 journals world wide ► 1987 – ► Update every week by EI, updated monthly by OVID.

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example One ► Find

the review articles written in English on gold nanoparticles for catalysts  SciFinder Scholar search: gold nanoparticles for catalyst ►Refine by Document type, and Language ►Got 13 review articles ►Check the citing articles for Shipway, Andrew N.; et al. Nanoparticles as structural and functional units in surface-confined architectures. -> 13 ►Topic

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example One ► Find

the review articles written in English on gold nanoparticles for catalysts  Web of Science ►General

search in Topic: (gold and nanoparticl*) and

cataly* ►Limited by Language and Document type ►Got 13 review articles

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example One ► Find

the review articles written in English on gold nanoparticles for catalysts  Compendex ►Search

(Gold or Au), nanopartic$, and catalys$ seperately ►Combine them together ►Limited to Journal articles/English (40) ►Limited to Research Review ►Got 0 review articles Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Further Investigation â–ş

If SciFinder Scholar indexes more journals and cover more years than Web of Science, why my search retrieve the same number of articles?

Crooks, RM, Zhao MQ, et al. Accounts of Chemical Research 34(3): 181-190. The most cited review in Web of Science, is also in SciFinder Scholar!!

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


SciFinder Scholar Record: Dendrimer-Encapsulated Metal Nanoparticles: Synthesis, Characterization, and Applications to Catalysis. Crooks, Richard M.; Zhao, Mingqi; Sun, Li; Chechik, Victor; Yeung, Lee K. Department Web of Science Record: of Chemistry, Texas AM University, College Station, TX, USA. Accounts of Chemical Research Dendrimer-encapsulated nanoparticles: characterization, and applications (2001), 34(3), 181-190. CODEN: ACHRE4metal ISSN: 0001-4842.Synthesis, Journal; General to catalysis CAPLUS Review written in English. CAN 134:168789 AN 2000:887031

Crooks RM, Zhao MQ, Sun L, Chechik V, Yeung LK ACCOUNTS OF CHEMICAL RESEARCH Abstract 34 (3): 181-190 MAR 2001 Document type: the Review Language: English Cited A review with 55 refs. that reports synthesis and characterization of References: dendrimer- 53 Times Cited: 61 encapsulated metalAbstract: nanoparticles and their applications to catalysis. These This Account reports the synthesis and characterization of dendrimer-encapsulated metal materials are prepd. by sequestering metal ions within dendrimers followed by nanoparticles and their applications to catalysis. These materials are prepared by sequestering chem. redn. to yield the corresponding zerovalent metal nanoparticle. The size of metal ions within dendrimers followed by chemical reduction to yield the corresponding such particles depends on themetal no. ofnanoparticle. metal ions initially the dendrimer. zerovalent The sizeloaded of suchinto particles depends on the number of metal ions Intradendrimer hydrogenation and carbon-carbon coupling reactions in water, org. initially loaded into the dendrimer. Intradendrimer hydrogenation and carbon-carbon coupling solvents, biphasic fluorous/org. solvents, andsolvents, supercrit. CO2 are also described. reactions in water, organic biphasic fluorous/organic solvents, and supercritical CO2 are also described. KeyWords Plus: SUPERCRITICAL CARBON-DIOXIDE, SURFACE-CONFINED MONOLAYERS, PHASE PROBE MOLECULES, POLY(AMIDOAMINE) DENDRIMERS, STARBURST DENDRIMERS, GOLD, WATER, NANOCLUSTERS, TEMPLATE, ELECTROCHEMISTRY Addresses: Crooks RM, Texas A&M Univ, Dept Chem, POB 30012, College Stn, TX 77842 USA Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Save Search/Results ► COMPENDEX

(OVID)

 Run Saved Search/Save Search History/Delete Search ► SciFinder

Scholar (CAS)

 Save only to computer drives with a “$” sign!! ► Web

   Spring 2003

Of Science (ISI)

Mark and Submit Marks Marked List Save Search/Run saved search Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Full Text? ► COMPENDEX

 

(OVID)

No full text available from the database Link to Purdue catalog, can link to full text then

► SciFinder

Scholar (CAS)

 Click the computer icon  Choose the purple colored options ► Web

Of Science (ISI)

 Selected full text available ► Double Spring 2003

check in Purdue Catalog!! Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Full Text? Full text journal articles available through Purdue’s subscription

All full text articles

Full text articles that covers in the database

Spring 2003

The full text articles you can get if you only check the full text links in the database

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Comparing Results of Example One ► Total

   

review articles found 25.

13 (52%)in SciFinder Scholar 13 (52%) in Web of Science 1 (4%) overlap in both 0 in Compendex

► Citing

papers for Crooks, RM, Zhao MQ, et al.

Accounts of Chemical Research 34(3): 181-190

    Spring 2003

Total found 68 63 (93%) in Web of Science 57 (84%) in SciFinder Scholar 52 (83%) overlap in both Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


More on Cited Reference Search â–ş Web

of Science also has a separate Cited Reference Search screen. Sometimes you will pick up more cited references for an article. â–ş C.D. Nobes and A. Hall, published in Cell, Volume 81 (1) 53-62, 7 April 1995

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example Two ► Find

Prof. Lee’s publication in recent years

 SciFinder Scholar ►Author

search: Lee Gil, choose all possible entries ►Refine by Databases (CAplus only) ►Analyze by Company/Organization ►Found 5 publications from Purdue

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example Two ► Find

Prof. Lee’s publication in recent years

 Web of Science ►Search

Author: Lee GU and Address: Purdue ►Got 8 results

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Example Two ► Find

Prof. Lee’s publication in recent years

 Compendex ►Author

search of Lee G or Lee G U or Lee Gil or Lee

Gil U ►Combine with Institution search: purdue -> 0 (!!)

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Conclusion For a same search … ► The search strategies are different among three databases ► The retrieved results are quite dissimilar ► Even when searching in one database, various approaches will retrieve diverse results Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Conclusion That means to do a comprehensive literature search … ► Consult as many resources as possible (including “the Web”, your advisor, librarians) ► Search critically. Use various combinations of search terms and search strategies as necessary ► Learn while you are searching. Adjust your searches accordingly ► Search independently and consistently ► Manage your search results by using the tool from the databases Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


A Few More Words ► You

can not find everything on the

web ► Always think what you might miss by consulting to one source ► E-journals are NOT free, so are the databases you use in the library ► Science and technology didn’t start from 1907, or 1977, or 1986. Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


Question Time

Spring 2003

Mellon Library of Chemistry Purdue University Libraries chemlib@purdue.edu


国外大学教授教你怎么查资料