Based on an analysis of the main chemical databases on STN, this paper compares and studies the methods of searching chemical documents on STN, which will provide an important guidance for the retrievel of chemical documents .
At present, chemical information in the Internet comprises various chemical databases, chemical patents, network periodicals, net meetings, network education, CAI resource, chemical software and so on.
With the advancement of IT technology and the popularization of Internet, cooperation-sharing system of chemistry data resources have been breaking area limit of the application of chemistry databases 's Information Island and greatly improving the efficiency and performance of the service of them.
NIST(the National Institute of Standards and Technology,USA)Chemistry WebBooks provides chemical andphysical property data for a variety of compounds. The data are from collections maintained by the NIST Standard ReferenceData Program and outside contributors.
NIST(The National Institute of Standards and Technology)Chemistry WebBooks(即美国国家标准与技术局化学数据库)是提供各种化合物化学和物理性质的免费查询数据库。
We analyze the influence of errors in the rate constants of gas-phase chemical reactions on the model abundances of molecules in the interstellar medium using the UMIST 95 chemical database.
Identification of 5-hydroxytryptamine1A receptor agents using a composite pharmacophore analysis and chemical database screening
A composite pharmacophore analysis and computer-assisted chemical database screening were used to identify a previously unrecognized class of 5-hydroxytryptamine1A (5-HT1A) receptor active agents.
These data suggest that a composite pharmacophore analysis and computer-assisted chemical database screening can be an effective technique for the identification of previously unrecognized receptor active agents.
This regularity is discussed with reference to statistical treatment of chemical database as a means to screen identification hypotheses.
An effort was made in the fields of setting up the metallurgical process modules and the process system simulation programs which include: general principles and examples of metallurgical process simulation; the dynamic simulation of chemical metallurgical processes and inorganic thermochemical data base and its applications in metallurgical process simulation.
Attempt is made to improve the UNIQUAC model because there are limitations when applied to some systems containing water and alcohol. Incorporating the chemistry data base with the model to make some of the pure compound parameters be adjustable and to process them by using the experimental data of vapor liquid equillibrium stored in the data base,much better results can be obtained.
We have modified and simplified Latimer's method for estimation of the standard entropies of binary oxides, and extended to high temperature region successfully. The values of the entropies of 20 compounds at different temperatures have been predicted. The root mean square error of 18 compounds of them is less than 5 cal/mol·K which corresponds to the experimental error of the standard entropy of some binary oxides.