literature searching

Chemical Engineering Resources at Purdue University LibrariesChemical Engineering Resources at Purdue University Libraries

Literature SearchingLiterature Searching

What to do when a “What to do when a “GGooooggllee” ” search is not enough?search is not enough?

Spring 2003 Mellon Library of ChemistryMellon Library of ChemistryPurdue University LibrariesPurdue University Libraries

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Song YuSong Yu

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Phone: 496-7279Phone: 496-7279

Chemical Information SpecialistChemical Information Specialist

Assist. Prof. of Library SciencesAssist. Prof. of Library Sciences

Purdue UniversityPurdue University


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To Warm Up …To Warm Up …

Ideas, common terms that we use when Ideas, common terms that we use when doing literature searchesdoing literature searches


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TERTIARYLITERATUREInformation

Retrieval

Structure of the literature and Channels of Communication


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Search Operators, Wildcards, and Search Operators, Wildcards, and Parentheses Parentheses

► What are search operators?What are search operators? AND, OR, NOT, SAME, NEARAND, OR, NOT, SAME, NEAR

► What are wildcards?What are wildcards? ? = one character? = one character

► E.g. E.g. EN?OBLAST EN?OBLAST will search ENDOBLAST and will search ENDOBLAST and ENTOBLASTENTOBLAST

* = zero to many characters* = zero to many characters► E.g. E.g. Gene*Gene* will search Gene, Genes, General, will search Gene, Genes, General,

GenerationGeneration Combination of ? and *Combination of ? and *

► E.g. E.g. CH?M* CH?M* will search CHEMISTRY, CHEMIST, will search CHEMISTRY, CHEMIST, CHEMICAL, CHEMIE, CHIMICA …CHEMICAL, CHEMIE, CHIMICA …

► ParenthesesParentheses (A or B) and C, (B and C) not A(A or B) and C, (B and C) not A

A B

C

Note: different databases have different wildcards. Check their Help file to find out what to use.


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What is in a citation?What is in a citation?

► AuthorAuthor► TitleTitle► Source/journalSource/journal

► Enumeration Enumeration (volume/issue)(volume/issue)

► Chronology (date)Chronology (date)► PaginationPagination

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

Bibliographic Information


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Cited/Citing Reference ?Cited/Citing Reference ?@#&!@#&!

► Linking to the original cited Linking to the original cited paperpaper

► Linking to papers which cite Linking to papers which cite the same paper (Time the same paper (Time Cited)Cited)

► Finding related papersFinding related papers

1994

19911992

19871988

1957

1984

1982

1988

1987

1957

Known Paper

Cited Paper

New paper retrieved via cited reference searching


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Major Databases in Major Databases in Chemical EngineeringChemical Engineering

►COMPENDEX (OVID)COMPENDEX (OVID)►SciFinder Scholar (CAS)SciFinder Scholar (CAS)

►Web Of Science (ISI)Web Of Science (ISI)


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►COMPENDEX (OVID)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.


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►SciFinder Scholar (CAS)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


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►Web Of Science (ISI)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.


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Access to the DatabasesAccess to the Databases► http://www.lib.purdue.edu/eresources/index.hthttp://www.lib.purdue.edu/eresources/index.ht

mlml choose “By Title” choose “By Title”

► COMPENDEX (OVID)COMPENDEX (OVID) Web based, need your Purdue IDWeb based, need your Purdue ID

► SciFinder Scholar (CAS)SciFinder Scholar (CAS) Server/Client basedServer/Client based Windows Terminal ServerWindows Terminal Server To download the primary client software, go To download the primary client software, go

to to http://www.lib.purdue.edu/wtshttp://www.lib.purdue.edu/wts Java client can not print and save your Java client can not print and save your

searchessearches► Web Of Science (ISI)Web Of Science (ISI)

IP basedIP based► Off campus accessOff campus access

Libraries Proxy serverLibraries Proxy server http://www.lib.purdue.edu/proxyhttp://www.lib.purdue.edu/proxy


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SciFinder ScholarSciFinder Scholar

Coverage back to 1907 by one search!Coverage back to 1907 by one search! CAplusCAplus. 1907 ~, +21.5 mil documents from +9000 . 1907 ~, +21.5 mil documents from +9000

journals--Updated daily with new citations, weekly with journals--Updated daily with new citations, weekly with indexed recordsindexed records

CASREACTCASREACT. . 1974+, +6 mil single and multi-step 1974+, +6 mil single and multi-step reactionsreactions

CHEMCATSCHEMCATS. . +5.3 mil Commercial chemicals+5.3 mil Commercial chemicals

CHEMLISTCHEMLIST. . over 227,000 Regulated chemicalsover 227,000 Regulated chemicals

RegistryRegistry. . 1965+, 20.3 mil substances, 21.8 mil 1965+, 20.3 mil substances, 21.8 mil biosequencesbiosequences

MedlineMedline. . 1958+, 11 mil biomedical citations (including 1958+, 11 mil biomedical citations (including OLDMEDLINE)OLDMEDLINE)


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Web of ScienceWeb of Science

►8,500 peer-reviewed journals in 8,500 peer-reviewed journals in science, social science, arts and science, social science, arts and humanities worldwidehumanities worldwide Science Citation Index (6014 Journal titles)Science Citation Index (6014 Journal titles) 230 Disciplines230 Disciplines 1350 in chemistry, 122 in chemical 1350 in chemistry, 122 in chemical

engineering engineering

►Update weeklyUpdate weekly►Purdue has access from 1977Purdue has access from 1977


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CompendexCompendex

► Index +5000 journals world Index +5000 journals world widewide

►1987 – 1987 – ►Update every week by EI, Update every week by EI,

updated monthly by OVID.updated monthly by OVID.


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Example OneExample One

►Find the review articles written in Find the review articles written in English on English on gold nanoparticles for gold nanoparticles for catalystscatalysts SciFinder ScholarSciFinder Scholar

►Topic search: Topic search: gold nanoparticles for catalystgold nanoparticles for catalyst►Refine by Document type, and LanguageRefine by Document type, and Language►Got 13 review articlesGot 13 review articles►Check the citing articles for Shipway, Andrew N.; Check the citing articles for Shipway, Andrew N.;

et al. et al. Nanoparticles as structural and functional units in surface-confined architectures. -> 13


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►Find the review articles written in Find the review articles written in English on English on gold nanoparticles for gold nanoparticles for catalystscatalysts Web of ScienceWeb of Science

►General search in Topic: (gold and General search in Topic: (gold and nanoparticl*) and cataly*nanoparticl*) and cataly*

►Limited by Language and Document typeLimited by Language and Document type►Got 13 review articlesGot 13 review articles


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►Find the review articles written in Find the review articles written in English on English on gold nanoparticles for gold nanoparticles for catalystscatalysts CompendexCompendex

►Search (Gold or Au), nanopartic$, and catalys$ Search (Gold or Au), nanopartic$, and catalys$ seperatelyseperately

►Combine them togetherCombine them together►Limited to Journal articles/English (40)Limited to Journal articles/English (40)►Limited to Research ReviewLimited to Research Review►Got 0 review articlesGot 0 review articles


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Further InvestigationFurther Investigation

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

Crooks, RM, Zhao MQ, et al. Accounts of Crooks, RM, Zhao MQ, et al. Accounts of Chemical Research 34(3): 181-190.Chemical Research 34(3): 181-190.

The most cited review in Web of Science, is The most cited review in Web of Science, is also in SciFinder Scholar!!also in SciFinder Scholar!!


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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 of Chemistry, Texas AM University, College Station, TX, USA. Accounts of Chemical Research (2001), 34(3), 181-190. CODEN: ACHRE4 ISSN: 0001-4842. Journal; General Review written in English. CAN 134:168789 AN 2000:887031 CAPLUS

Abstract

A review with 55 refs. that reports the synthesis and characterization of dendrimer-encapsulated metal nanoparticles and their applications to catalysis. These materials are prepd. by sequestering metal ions within dendrimers followed by chem. redn. to yield the corresponding zerovalent metal nanoparticle. The size of such particles depends on the no. of metal ions initially loaded into the dendrimer. Intradendrimer hydrogenation and carbon-carbon coupling reactions in water, org. solvents, biphasic fluorous/org. solvents, and supercrit. CO2 are also described.

Web of Science Record:

Dendrimer-encapsulated metal nanoparticles: Synthesis, characterization, and applications to catalysis

Crooks RM, Zhao MQ, Sun L, Chechik V, Yeung LKACCOUNTS OF CHEMICAL RESEARCH

34 (3): 181-190 MAR 2001Document type: Review Language: English Cited References: 53 Times Cited: 61 Abstract:This Account reports the synthesis and characterization of dendrimer-encapsulated metal nanoparticles and their applications to catalysis. These materials are prepared by sequestering metal ions within dendrimers followed by chemical reduction to yield the corresponding zerovalent metal nanoparticle. The size of such particles depends on the number of metal ions initially loaded into the dendrimer. Intradendrimer hydrogenation and carbon-carbon coupling reactions in water, organic solvents, 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 USATexas A&M Univ, Dept Chem, College Stn, TX 77842 USA


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Save Search/ResultsSave Search/Results

► COMPENDEX (OVID)COMPENDEX (OVID) Run Saved Search/Save Search Run Saved Search/Save Search

History/Delete SearchHistory/Delete Search

► SciFinder Scholar (CAS)SciFinder Scholar (CAS) Save only to computer drives with a “$” Save only to computer drives with a “$”

sign!!sign!!

► Web Of Science (ISI)Web Of Science (ISI) Mark and Submit MarksMark and Submit Marks Marked ListMarked List Save Search/Run saved searchSave Search/Run saved search


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Full Text?Full Text?

► COMPENDEX (OVID)COMPENDEX (OVID) No full text available from the No full text available from the

databasedatabase Link to Purdue catalog, can link to full Link to Purdue catalog, can link to full

text thentext then► SciFinder Scholar (CAS)SciFinder Scholar (CAS)

Click the computer iconClick the computer icon Choose the purple colored optionsChoose the purple colored options

► Web Of Science (ISI)Web Of Science (ISI) Selected full text availableSelected full text available

► Double check in Purdue Catalog!!Double check in Purdue Catalog!!


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Full Text?Full Text?

All full text articles

Full text journal articles available through Purdue’s subscription

Full text articles that covers in the database

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


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Comparing Results of Example Comparing Results of Example OneOne

► Total review articles found 25.Total review articles found 25. 13 (52%)in SciFinder Scholar13 (52%)in SciFinder Scholar 13 (52%) in Web of Science13 (52%) in Web of Science 1 (4%) overlap in both1 (4%) overlap in both 0 in Compendex0 in Compendex

► Citing papers for Citing papers for Crooks, RM, Zhao MQ, et al. Crooks, RM, Zhao MQ, et al. Accounts of Chemical Research 34(3): 181-190Accounts of Chemical Research 34(3): 181-190 Total found 68Total found 68 63 (93%) in Web of Science63 (93%) in Web of Science 57 (84%) in SciFinder Scholar57 (84%) in SciFinder Scholar 52 (83%) overlap in both52 (83%) overlap in both


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More on Cited Reference More on Cited Reference SearchSearch

►Web of Science also has a separate Web of Science also has a separate Cited Reference Search screen. Cited Reference Search screen. Sometimes you will pick up more cited Sometimes you will pick up more cited references for an article.references for an article.

►C.D. Nobes and A. Hall, published inC.D. Nobes and A. Hall, published in Cell,Cell, Volume 81 (1) 53-62, 7 April 1995 Volume 81 (1) 53-62, 7 April 1995


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Example TwoExample Two

►Find Prof. Lee’s publication in recent Find Prof. Lee’s publication in recent yearsyears SciFinder ScholarSciFinder Scholar

►Author search: Lee Gil, choose all possible Author search: Lee Gil, choose all possible entriesentries

►Refine by Databases (CAplus only)Refine by Databases (CAplus only)►Analyze by Company/OrganizationAnalyze by Company/Organization►Found 5 publications from PurdueFound 5 publications from Purdue


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►Find Prof. Lee’s publication in recent Find Prof. Lee’s publication in recent yearsyears Web of ScienceWeb of Science

►Search Author: Lee GU and Address: PurdueSearch Author: Lee GU and Address: Purdue►Got 8 resultsGot 8 results


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►Find Prof. Lee’s publication in recent Find Prof. Lee’s publication in recent yearsyears CompendexCompendex

►Author search of Lee G or Lee G U or Lee Gil or Author search of Lee G or Lee G U or Lee Gil or Lee Gil ULee Gil U

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


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ConclusionConclusion

For a same search …For a same search …►The search strategies are The search strategies are

different among three databasesdifferent among three databases►The retrieved results are quite The retrieved results are quite

dissimilardissimilar►Even when searching in one Even when searching in one

database, various approaches will database, various approaches will retrieve diverse resultsretrieve diverse results


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ConclusionConclusion

That means to do a comprehensive literature That means to do a comprehensive literature search …search …

► Consult as many resources as possible Consult as many resources as possible (including “the Web”, your advisor, (including “the Web”, your advisor, librarians) librarians)

► Search critically. Use various combinations Search critically. Use various combinations of search terms and search strategies as of search terms and search strategies as necessarynecessary

► Learn while you are searching. Adjust your Learn while you are searching. Adjust your searches accordinglysearches accordingly

► Search independently and consistentlySearch independently and consistently► Manage your search results by using the Manage your search results by using the

tool from the databasestool from the databases


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A Few More WordsA Few More Words

►You can not find everything on the You can not find everything on the webweb

►Always think what you might miss Always think what you might miss by consulting to one sourceby consulting to one source

►E-journals are NOT free, so are the E-journals are NOT free, so are the databases you use in the librarydatabases you use in the library

►Science and technology didn’t Science and technology didn’t start from 1907, or 1977, or 1986.start from 1907, or 1977, or 1986.


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Question TimeQuestion Time

literature searching

Documents