Scitation

Scitation
http://scitation.aip.org

Scitation is an article database comprising more than one million documents from scholarly journals, magazines, conference proceedings, and other special publications. Publishers include: AIP, APS, ASME, ASCE, ECS, IEE/IET, SPIE, SIAM.

Search options include Scitation, SPIN, Scitation+SPIN, PubMed/Medline.
More info http://link.aip.org/links/showjournal.jsp?meta=all

ASTM International / ASTM Digital Library

ASTM International
http://www.astm.org/

ASTM International provides access to bibliographic records, including abstrtacts, for ASTM Standards, Special Technical Publications, Manuals and Monographs, Journal Articles, Papers and Chapters.

Standards are searched from the main page, all other publications from the Digital Library page.

Magazines and Newsletters (Standardization News, Access ASTM International, ASTM International Business Link) are freely available fulltext.

The website also provides a complete listing of organizational details and functions.

Google Book Search

Google Book Search [http://books.google.com/books]

Google Book Search offers both author name and keyword searching of the full text of books and retrieves purchase or borrowing information. The book title is linked to a card catalog entry and possibly some snippets of text, or a few full pages or, if the book is out of copyright, the entire book. In all cases, there will be links to online bookstores. Many books have a "Find this book in a library" link to a union catalog that simultaneously searches WorldCat and 15 other catalogs representing 30 countries (e.g. CISTI, BLL).

CrossRef Search

CrossRef Search [http://www.iop.org/EJ/search_crossref]

'Google' indexed fulltext of scholarly journal articles from over 1600 publishers' websites. Results are returned using the Google search and ranking algorithms, and using the article's DOI whenever possible to link to the published article.

DOIs can be retrieved from bibliographic citations at: http://www.crossref.org/freeTextQuery

Bibliographic citations can be retrieved from DOIs at: http://dx.doi.org

TechXtra

TechXtra
http://www.techxtra.ac.uk/

TechXtra aggregates content from ~45 databases/websites with technology-related content (engineering, mathematics, computing), searching across ~4 million records - articles, technical reports, digital theses and dissertations, books, eprints, news items, job announcements, video, learning & teaching resources, key websites, etc. Sources include: Copac (UK Research Libraries), CISTI, Nanotechweb.org, NASA/NACA TR, New Scientist, etc.).

Optics InfoBase

Optics InfoBase (OSA) http://www.osa.org/
Optical Society of America

Optics InfoBase is a web-based repository of optics research with added services to meet the individual subscriber's needs.

While the database is freely searchable, Caltech onlu has access to the OSA journals NOT the complete database which includes conference proceedings.

Scirus
http://www.scirus.com/srsapp

Scirus is a science-focused internet search engine, offering a combination of free Web information and journal content. Web sources include research institutes, governments, scientific organizations, conferences, scientist and company homepages worldwide. Scirus uses a dictionary with over 1.6 million scientific terms, unique pattern recognition tools and linguistic analysis, to classify the content type and relevance of 250 million pages. Scirus searches bibliographical information and specific content types.

ScienceDirect

Science Direct
http://www.sciencedirect.com/

Both a listing of over 2,000 Elsevier journals and hundreds of book series, handbooks and reference works ... Full text searchable database of journal articles and book chapters from v.1

NASA Technical Report Server

NASA Technical Reports Server (NTRS) http://ntrs.nasa.gov/search.jsp

The NTRS provides access to NASA's current and historical technical literature ... approximately 500K aerospace related citations, 90K full-text online documents, and 111K images and videos. Information includes: conference papers, images, journal articles, photos, meeting papers, movies, patents, research reports, and technical videos. NTRS integrates three separate information collections through a common search interface:

NACA Collection: Citations and reports from NACA period (1915 to 1958).

NASA Collection: Citations and documents from 1958 to the present.

NIX Collection: Citations and images, photos, movies and videos downloaded from the NASA Image eXchange .

Carcinogenic Potency Database

Carcinogenic Potency Database - Lois Swirsky Gold, Bruce Ames, and colleagues at the University of California, Berkeley. The site collates data on the cancer-causing ability of 1485 compounds, drawing on more than 6000 animal tests from the 1950s through the 1990s. A chart atop each compound's page summarizes the results and, if they are positive, lists which organs develop tumors and the dose that spurred cancer in half of the animals studied. Read further for a synopsis of experiments on the substance. The authors are known for arguing that the risk to humans from synthetic chemicals is overstated, but their views don't color the site's coverage.

potency.berkeley.edu/cpdb.html

FindArticles / Article Finder

FindArticles
http://www.findarticles.com

FindArticles from LookSmart contains articles from 900 trade based magazines & journals since 1998. Organized by major categories, journal titles can be browsed. Topic search results can be sorted by relevance, date, length and are in text only. Search for 'free' or 'all' articles (which also retrieves ppv from KeepMedia, HighBeam, etc.) or within categories (Arts & Entertainment, Automotive, Business ...)

Article Finder
http://www.infotrieve.com/af

Freely search through 26 million citations and 8.5 million abstracts from over 54,000 scientific, technical, medical journals. Articles on a ppv basis.

Probe Database

"Probe Database, operated by the National Center for Biotechnology Information, is a public registry of nucleic acid reagents designed for use in biomedical research. Its latest data set involves the contribution by Applied Biosystems of more than 400,000 polymerase chain reaction primer-pair designs for about 16,000 human genes for the detection of DNA sequence variants related to disease. These resequencing primer sequences provide a rich data resource that can enable researchers to design better diagnostic tools and therapeutics for diseases. www.ncbi.nlm.nih.gov/genome/probe"
C&EN 2006, July 3, p.42

Membrane Protein Data Bank (MPDB)

"Membrane Protein Data Bank (MPDB) is an online, searchable database that has select structural and functional information on membrane proteins and peptides. MPDB uses data from the Protein Data Bank and other databases, as well as from the literature. The data bank covers integral, anchored, and peripheral membrane proteins and peptides and hosts structures that are based on X-ray diffraction, nuclear magnetic resonance spectrometry, electron diffraction, and cryo-electron microscopy. Users can search for molecules by several parameters, including protein characteristic, structure method, crystallization technique, temperature, and author. The site also provides a wealth of database and search engine websites.
www.lipidat.chemistry.ohio-state.edu/MPDB/index.asp"
C&EN 2006 July 3,p.42

ChemBank

"ChemBank is a publicly available database created to enhance scientists' capabilities in drug discovery. Version 2.0 is a complete overhaul and now includes new search capabilities and extensibility features. The Web-based ChemBank includes data on drug candidates, or small molecules, and their behavior in cells selected to serve as models of human disease, especially cancer. Using ChemBank's analysis tools, investigators can query and analyze these data and may even export the raw information to perform their own analyses. By these mechanisms, ChemBank enables researchers to gain new knowledge of human disease and to identify starting drug candidates for novel therapeutics. chembank.broad.harvard.edu"
Digital Briefs - C&EN 2006, July 3, p.42

Chemistry Unpublished Papers

C&E News May 29, 2006 p.29

A forum for attempted reactions, procedures, and experiments that have not been published ... because of inadequate results, insufficient trials, omitted by journal editor as well as unexpected and unreproducible reactions.
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Databases for Citation Searching - July 2006 update

Alternatives to Web of Science for cited reference searching were described in "The emergence of competitors to the Science Citation Index and the Web of Science", D.L. Roth, Current Science (2005), 89(9),1531-1536 [http://www.ias.ac.in/currsci/]. This article was included in a special section entitled: 50 Years of Citation Indexing.

Some recent relevant references include:

Three options for citation tracking: Google Scholar, Scopus and Web of Science
Nisa Bakkalbasi, Kathleen Bauer, Janis Glover and Lei Wang
Biomedical Digital Libraries 2006, 3:7 doi:10.1186/1742-5581-3-7
http://www.bio-diglib.com/content/3/1/7/abstract


The following physical science databases as well as their options for citation searching were described: Chemical Abstracts/SciFinder/SciFinder Scholar, NASA Astrophysics Data System, Scopus, Scitation/Spin Web, PROLA (Physical Review Online Archive), Optics InfoBase, CiteSeer, IEEE Xplore, Spires HEP, IOP (Institute of Physics) and CrossRef.

Since the publication of this article, there have been some revisions and several new players.

Revisions include:

NASA ADS
http://adsdoc.harvard.edu

All the content from the Instrumentation database has been merged into the Physics database

NASA ADS has added full author name searching (Surname, Firstname Middle Initial). Searching on the full name retrieves, for example, Smith, Charles A., Smith, C.A. and Smith, C.

At the bottom of the listing of an author's papers, following record/s selection, there are a variety of options (e.g. find similar papers, get reference lists, get citation lists, exclude self-citations, etc.)

What's New at ADS is regularly updated at:
http://doc.adsabs.harvard.edu/abs_doc/whatsnew.html


Scopus
http://www.scopus.com/scopus/home.url

Scopus has introduced a new 'Citation Tracker' feature that is available under the 'Author Search' tab. While designed to algorithmically differentiate authors with similar names and initials, there are multiple examples of authors (e.g. R.A. Marcus, A.H. Zewail) that have multiple registrations (even with identical institutional addresses). The initial author display also includes authors with reversed initials (e.g. H.B. Gray and B.H. Gray). A comparison search on citations to a Zewail article in Science 2004 retrieved 27 citations in WoS and 22 in Scopus (which didn't list articles in the March 2005 Phys. Today, June 2006 Rep. Prog. Phys., and May 18, June 22, June 29 issues of J. Phys. Chem. A). A search for J.C. Venter's paper on the 'Sequence of the Human Genome' displays his last name as 'Craig Venter').


Scitation
http://scitation.aip.org/

Scitation has expanded its citation searching feature to include the CrossRef database. At the top of the Abstract page there are links to: Scitation Citing Articles, CrossRef Citing Articles and All Citing Articles. This feature is freely available to non-subscribers.


PROLA (Physical Review Online Archives)
(http://prola.aps.org/)

PROLA refers to the archival file, which currently includes 1893-2002. PROLA has expanded the citation searching feature to include the CrossRef database. A 'Show Articles Citing This One' link is provided at the end of the abstract record. The bibliographic results are presented in reverse chronological order and the default gives both PROLA and CrossRef citations. Additional results are grouped by citing journal and year cited, which are ordered according to the number of citations, not alphabetically or chronologically. A 'Show Only APS Citations' link is also available. While full-text searching and displaying citations (including abstracts) is free, subscriptions are required for display of full text and citing articles.

The APS current file (currently 2003+) has a different display and offers links to: Citing APS & Scitation Articles, CrossRef Citing Articles and All Citing Articles.


Google Scholar
http://scholar.google.com/

Google Scholar has added a 'recent article' link (which limits retrieval to 2001+). A pull down 'year' menu is newly displayed showing 'since 2001', and can be changed to 'since (any year from 1987 to 2006)' or anytime.


CiteSeer
http://citeseer.ist.psu.edu/

CiteSeer document pages now link to ACM Portal [ http://portal.acm.org/dl.cfm ] records plus DBLP [ http://www.informatik.uni-trier.de/~ley/db/ ], a computer science bibliography containing over 770K records from conferences, journals, series & books.


ScienceDirect
http://www.sciencedirect.com

ScienceDirect now provides access to 'Article in Press' with a link on each journal page above the issue list. These peer-reviewed manuscripts are either 'In Press, Corrected Proof' or 'In Press, Accepted Manuscript'. 'Corrected Proof' manuscripts are included in the results after clicking the 'Cited by' link.


SPIRES HEP
http://www.slac.stanford.edu/spires

In addition to conference papers, SPIRES HEP will also uniquely include citing papers from arXiv and Ph.D. theses.


Institute of Physics (IOP)
http://journals.iop.org/

Individual articles in IOP journals provide a 'Citing Articles' link from the journal issue/volume contents page. A recent comparison search for articles citing:
R W Wood 1902 Proc. Phys. Soc. 18,269-275 give 7 citing articles. The same search in Web of Science gives 15 articles, 7 of which are in common, 4 recent articles from Opt. Express, Opt. Commun., Appl. Phys. Lett., IEEE J. Quantum Electronics; 1999 articles from J. Mod. Opt., & J. Lightwave Technol. & articles from 1991 and 1986.
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New Players include:

Windows Live Academic
http://academic.live.com/

Windows Live Academic is a component of Windows Live, which also includes: Web, News, Images, Local, Feeds, & Products, and is currently limited to computer science, physics, electrical engineering, and related subject areas. Search results are default ranked by relevance. They can be reranked/limited by date-oldest, date-newest, author, journal & conference. The article title is hot linked to the publisher's website. Mousing over the citation (left colume) displays the article abstract in the right column.
Bibtex, RefWorks and EndNote formats are provided. Local SFX links are provided for cooperating institutions. Truncated citations (e.g. R.A. Marcus, Discuss. Faraday Soc. 29) can be searched to retrieve articles citing this reference.


Royal Society of Chemistry
http://www.rsc.org/Publishing/Journals/Index.asp

The Royal Society of Chemistry has introduced a 'Forward Linking' option which provides 'Search for citing articles' links, at the article level, to citing articles in the CrossRef database. The CrossRef references include DOI links to the full text of the citing article. This feature is freely available to non-subscribers.
The RSC reference linking facilities also allow access to the Chemical Abstracts Service abstract for the reference via ChemPort and links to the full text of the reference, where available online, on the publisher’s server (via DOI identified using Cross-Ref).


MathSciNet
http://www.ams.org/mathscinet/

Abstracts in MathSciNet include a 'Reference Citations' link to other MathSciNet articles.


PubMed/PubMedCentral
http://www.ncbi.nlm.nih.gov/Literature/

Each PubMed citation has a 'Links' option which includes "Cited in PMC", if available, which links to citing articles in PubMedCentral. PubMed also has a 'Cited Articles' link to a PubMed list of the references in the original PMC article.

PMC is a searchable full text database that provides 'reference' and 'reference author' searching.

Reference - searches for words and numbers in the titles of journal references.

Reference Author - searches for author names in journal references. Since PMC references don't list full author names, use last name and initials (e.g., "fauci as" or "o'brien jc jr"). Initials and suffixes may be omitted. PMC automatically truncates author names (e.g., "o'brien j [au]" will retrieve o'brien ja, o'brien jb, o'brien jc jr, as well as o'brien j). To turn off this automatic truncation, enclose the author's name in double quotes and qualify with [au] in brackets, e.g., "o'brien j" [au] to retrieve just o'brien j.


Annual Reviews
http://arjournals.annualreviews.org/

The Abstract/Citation screen provides 'Most recent citing papers (via CrossRef)'


Highwire Press
http://highwire.stanford.edu/

The Abstract display offers 'articles citing this article' in Google Scholar.


Wiley Interscience
www.interscience.wiley.com/

Citation Tracking allows researchers to track where an article has been cited in other online content, based on data from CrossRef. A license to view the full-text content of a journal article is required to view a list of links to citing articles. The feature will eventually be included for Online Books.

Access a journal article ABSTRACT and click on the Citation Tracking link in the article navigation bar. Citations for Wiley InterScience content are displayed separately from citations from other publishers.

Natural Product Databases

Super Natural: a searchable database of available natural compounds
http://bioinformatics.charite.de/supernatural/
--described at http://nar.oxfordjournals.org/cgi/content/full/34/suppl_1/D678
--search with names, RN, properties, templates, supplier ID, structures, etc,
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Chemical Entities of Biological Interest (ChEBI)
www.ebi.ac.uk/chebi
--Search with synonyms, formula, or SMILES
--Displays structure, names, synonyms, SMILES, InChI, formula, registry numbers.
--Links to UniProt, ChemIDplus, etc.
--Ontologies for Molecular Structure, Biological Function, Applications
--3.5K 'natural products'

ChemBank
chembank.broad.harvard.edu
--Search with text, synonyms, SMILES, structures, MW, MF, descriptors, assays
--Displays names, synonyms, SMILES, InChI, biological activity, Screening tests
-- N.A. 'natural products'

ChemIDplus
http://sis.nlm.nih.gov/chemical.html
--Search and display RN, names, MF, structure, properties, etc.
--2000 'natural products'

NCI
catus.nci.nih.gov/ncidb3/download_ncidb3.html
--downloadable structure files from Open NCI Database Compounds
--screenable with NSC/CAS #s, MF, MW, properties, structure, etc.

PubChem
pubchem.ncbi.nlm.nih.gov
--search names, properties, elements, structures (SMILES), etc.

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Antibase (Wiley)

Dictionary of Natural Products (C&H)

SciFinder Scholar

Rompp Online (Wiley-VCH)

Beilstein Crossfire

Merck Index

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Supplier

Knovel K-Essentials

http://www.info.knovel.com/essentials/

Currently provides free access to:

K-Essentials includes free access to the following titles:

International Critical Tables of Numerical Data, Physics, Chemistry and Technology
Essential Practices for Managing Chemical Reactivity Hazards
Knovel Critical Tables
Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables
Smithsonian Physical Tables (9th Revised Edition)
Metallic Materials Properties Development and Standardization (MMPDS)
Military Handbook - MIL-HDBK-5H: Metallic Materials and Elements for Aerospace ...
Engineering Problem Solving - A Classical Perspective
Dialogues Concerning Two New Sciences
Large-Scale Adsorption and Chromatography, Volumes 1-2
Teaching Engineering
Knovel Unit Converter
Knovel Sample Book
Knovel Periodic Table of the Elements (in press)

TechXtra

TechXtra suite of free online services
http://www.techxtra.ac.uk/

The Heriot-Watt University has announced an initiative called TechXtra, which comprises a suite of 10 free online services to simplify access to engineering, mathematics and computing information from a host of sources. The services include database cross-search, job announcements, industry news, free trade magazine subscriptions & technical document downloads, online bookstore, offshore engineering information, discovery guides, information on validated engineering design data and advances in manufacturing.

Lexis-Nexus / NYT

For the daily headlines, and links to the stories, go to www.nytimes.com
There is a sign-up link at the bottom of the page.

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To read your favorite columnist, go to Lexis/Nexis
[http://web.lexis-nexis.com/universe],
choose Guided News Search then 'General News', then 'Major Papers', then author’s last name and 'author' from pull down menu, then “today”, “previous week” or whatever, and then 'New York Times'.

Google Scholar/BL Direct

Google Scholar (http://scholar.google.com) continues to enhance its ability to not only find (discover) scholarly content but also to fetch (access) it. To its existing three routes-the open Web, authorized publisher feeds, and library holdings links-it has now added a connection to The British Library (BL) Direct pay-per-view service (http://direct.bl.uk). Searchers will find a display of access options available with the initial cluster entry in Google Scholar search results, where a “BL Direct” option will appear when appropriate. The British Library launched BL Direct in June 2005 to open up a subset of 9 million articles from 5 years’ worth of approximately 20,000 scientific, technical, medical, business, economics, and law journals.

ASHRAE, SAE, ASTM

ASHRAE
http://www.ashrae.org/template/AdvancedSearch;jsessionid=aaa7fXmGBN_2eU

SAE
http://www.sae.org/jsp/jsps/advancesearch.jsp
it has an option to limit search to past two years. How about previous years? I remember that was some discussion about its content not being indexed in Ei compendex.

ASTM
http://www.astm.org/cgi-bin/SoftCart.exe/NEWSITE_JAVASCRIPT/index.shtml?L+mystore+ctsx1044+1142468508