Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Subject index simple

Contents Quantum Mechanics and Atomic Theory. - Simple Molecular Orbital Theory. -Structural Applications of Molecular Orbital Theory. - Electronic Spectra and Magnetic Properties of Inorganic Compounds. - Alternative Methods and Concepts. - Mechanism and Reactivity. - Descriptive Chemistry. - Physical and Spectroscopic Methods. - Appendices. -Subject Index. [Pg.125]

Although they are only indirectly concerned with information retrieval from the literature, it is worth noting that the computer has also made significant contributions to the production of printed indexes. Much of the work has involved the production of traditional indexes by computer methods, ranging from simple Uniterm and keyword indexes to fully articulated subject indexes and dual dictionaries. Products more particularly of the computer age are permuted indexes such as the Permuterm Index of the Institute for Scientific Information and the KWIC, KWAC, KWOC family. [Pg.82]

Analysis processing starts with document analysis. In this process, a short summary (abstract) of the document is created along with keyword phrases, which provide simple natural-language access points for the subject content of the article. Also, the document analyst identifies the chemical substance and general subject index entries that capture the uniqueness of the document and provide the critical controlled-vocabulary, articulated subject access points. [Pg.288]

Contents L.Ley, M. Cardona Introduction. - L.Ley, M. Cardona, R.A.Poliak Photoemission in Semiconductors. -S.Hufner Unfilled Inner Shells Transition Metals and Compounds. -M.Campagna, G.K. Wertheim, Y.Baer Unfilled Inner Shells Rare Earths and Their Compounds. - W.D. Grobman, E.E.Koch Photoemission from Organic Molecular Crystals. - C.Kunz Synchrotron Radiation Overview. -P.Steiner, H.Hochst, S.Hufner Simple Metals. - Appendix Table of Core-Level Binding Energies. - Additional References with Titles. - Subject Index. [Pg.262]

These test procedures and standards are subject to change, so it is essential to keep up to date if one has to comply with them. It may be possible to obtain the latest issue on a specific test (such as a simple tensile test or a molecular weight test) by contacting the organization that issued it. For example, the ASTM issues new annual standards that include all changes. Their Annual Books of ASTM Standards contain more than seven thousand standards published in sixty-six volumes that include different materials and products. There are four volumes specifically on plastics 08.01-Plastics 1 08.02-Plastics 11 08.03-Plastics III, and 08.04-Plastic Pipe and Building Products. Other volumes include information on plastics and RPs. The complete ASTM index are listed under different categories for the different products, types of tests (by environment, chemical resistance, etc.), statistical analyses of different test data, and so on (56,128,129). [Pg.301]

Loeomotor aetivity has historically been used as an index of psychostimulant effects. Simple assessment of amount of loeomotor activity can provide the basis for anatomical as well as pharmaeologieal analysis of the neural substrates that mediate the behavioral expression of stimulant action. More sophisticated behavioral measurement systems ean reeord multiple measures of activity and describe spatial and temporal patterning of loeomo-tion. In such systems, qualitative aspects of behavioral activation can be evaluated by examining the entire activity profile. A comparison of the effects of novel drugs with those produced by well-characterized substanees may lead to a better understanding of their mechanisms of action and subjective properties. [Pg.102]

It is not being suggested that these figures represent the total number of papers published on the subject since the database used does not contain publications from all publishers and it is highly unlikely that all relevant papers will have been indexed using this simple term. It does, however, reflect the significant increase in the number of papers on LC-MS published recently which, in turn, reflects the development of LC-MS into a routine and mature analytical technique. [Pg.129]

In order to integrate further some of the various reactions mentioned, and to detect its presence by other methods, the vessels of the rat s mesoappendix were employed as a test object (Chambers-Zweifach preparation, 12). A good correlation between the presence of a vasoexcitor material-like substance in the extracts and the presence of hypertension was found. When the whole rat was used for assay, a much cruder index, sizable quantities of active pressor material were isolated from the blood only of those patients showing at least a degree of renal impairment (lessened ability to concentrate urine, etc.). In general it may be stated unequivocally that patients with severe hypertension have in their arterial blood extractable substances which are pressor for the rat there are less or undemonstrable amounts in blood of less severe or neurogenic hypertensive patients there is little or none in blood of normotensive subjects a vasoexcitor material-like activity is exerted by blood from most hypertensive patients adenyl compounds, having a depressor action, present in extracts of blood are less prevalent in those from hypertensive patients the active rat pressor material (pherentasin) is probably aminelike in nature, is not a protein, but may be a simple peptide or an amine. [Pg.14]

It would be desirable to have simple tests capable of characterising the fluidisation behaviour or flowability of particulate materials on the basis of their bulk properties. To this end, Carr19 developed a system to characterise bulk solids with respect to flowability. Table 6 summarises the properties which are determined. In Carr s method a numerical value is assigned to the results of each of these tests, and is summed to produce a relative flowability index for that particular bulk material. Given the extensive use of these empirical techniques in academia and industry, a brief review on the subject is reported here. Nevertheless, it should be emphasised that these techniques allow measurements of the flow-ability or cohesion of materials solely in their stationary or compressed status and at ambient conditions. A direct relationship between these... [Pg.227]

Cross references to the subject (primary) index are used for many simple inorganic compounds AICI3, see Aluminum chloride all minerals of definite composition, F2MgeNa2022Si8, see Richterite and the more common organic compounds, C4H4O, see Furan. [Pg.28]


See other pages where Subject index simple is mentioned: [Pg.564]    [Pg.501]    [Pg.255]    [Pg.207]    [Pg.705]    [Pg.101]    [Pg.4]    [Pg.266]    [Pg.19]    [Pg.389]    [Pg.421]    [Pg.389]    [Pg.278]    [Pg.160]    [Pg.372]    [Pg.227]    [Pg.249]    [Pg.311]    [Pg.287]    [Pg.229]    [Pg.82]    [Pg.238]    [Pg.61]    [Pg.103]    [Pg.739]    [Pg.929]    [Pg.34]    [Pg.264]    [Pg.929]    [Pg.28]    [Pg.77]    [Pg.185]    [Pg.117]    [Pg.2531]    [Pg.561]    [Pg.229]    [Pg.19]    [Pg.187]   
See also in sourсe #XX -- [ Pg.196 ]




SEARCH



INDEX simple

Subject index

© 2024 chempedia.info