化学Alexa排名

326. Nmrtubes.comnmrtubes.com

网站简介:NMR Sample Tubes and Accessories

327. Webelements.com/sodium/

网站简介:Extensive information on history, uses, occurrence, compounds, and properties of the element.

328. Chemistry.about.com/od/organicchemistry/index.htm

网站简介:Information about the chemistry of carbon and life. Features lectures, notes, structures, and labs.

329. Caltechindia.comcaltechindia.com

网站简介:Complete instruments solution for cathodic protection, NDT, corrosion, paint like Holiday Detector, Pin-hole Detectors, Wet Film thickness gauge, coating thickness gages, Spark testers, half cell reference electrodes, test stations etc.

330. Journal.csj.jp/bcsj

网站简介:Covers a wide academic areas from chemical science to applied chemistry.

331. Chem.purdue.edu/gchelp/cchem/

网站简介:A guide to important introductory concepts of inorganic chemistry. By John Nash (Purdue University, USA).

332. Cem.msu.edu/~reusch/OrgPage/nmr.htm

网站简介:Several tables of chemical shift data, as well as some explanations of shielding.

333. Chemistry.csudh.educhemistry.csudh.edu

网站简介:Department of Chemistry

334. E-meca.come-meca.com

网站简介:Manufacture and design of power dividers, directional and 3dB hybrid couplers, attenuators and terminations.

335. Hyper.comhyper.com

网站简介:Producer of HyperChem, a molecular modeling package for windows and HyperNMR, a program for prediction of one-dimensional NMR spectra.

336. Gentechscientific.comgentechscientific.com

网站简介:Services and sells used laboratory equipment, including chromatographs, mass spectrometers, and other analytical equipment.

337. Minerals.usgs.gov/minerals/pubs/commodity/magnesium/

网站简介:Statistics and information on the worldwide supply, demand, and flow of the element (PDF format).).

338. Organic-chemistry.org/prog/peo/

网站简介:Software to calculate various drug-relevant properties of chemical structures. Prediction results are given a value and color coded for such properties as toxicity and solubility.

339. Chem.leeds.ac.ukchem.leeds.ac.uk

网站简介:Includes courses, events, research, people, jobs, and contact information.

340. Njal.comnjal.com

网站简介:State certified laboratory specializing in analysis of well and drinking water, and offering air, water, ground water and soil tests, and remediation projects. Includes profile of laboratory in Pennington.

341. Oregonstate.edu/dept/chemistry/carter/

网站简介:Synthesis of Azaspiracid, Amphidinolide B1, Vacidin A and TMC-95A.

342. Filtsep.comfiltsep.com

网站简介:From the Elsevier Science Group. Monthly journal for engineers, specifiers, designers, consultants and end-users in the filtration and separation equipment and products manufacturing industries. On-line collection of technical articles and marketing studies. List of related publications.

343. Frontagelab.comfrontagelab.com

网站简介:Perform pharmacokinetic and bioequivalence studies specializing in stabilizing fast-degrading analytes and multiple component assays. Located in Malvern, Pennsylvania and Shanghai, China.

344. Lem.ch.unito.itlem.ch.unito.it

网站简介:Provides information on the research being undertaken at the University of Turin, Italy.

345. Ddbst.deddbst.de

网站简介:Database of thermodynamic and transport properties of pure components and mixtures for use in process design and development and related software package.

346. Eurochlor.orgeurochlor.org

网站简介:Information about chlorine and its derivatives from Euro Chlor.

347. Chemnetbase.comchemnetbase.com

网站简介:Online access to major chemical reference works from Chapman and Hall/CRC including Combined Chemical Dictionary (CCD), The Handbook of Chemistry and Physics, Polymers: A Property Database, Properties of Organic Compounds.

348. Physics.nist.gov/cuu/Constants/

网站简介:The values of the fundamental physical constants provided at this site are recommended for international use by CODATA and are the latest available.

349. Education.jlab.org/itselemental/ele080.html

网站简介:Basic physical and historical information.

350. Chem.hawaii.educhem.hawaii.edu

网站简介:Department of Chemistry