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Comparing patterns

Comparable patterns are followed by other organic substances such as formaldehyde and formic acid. All these substances are dissociatively adsorbed on platinum [4] and it was suggested that they build the same adsorption product [35]. [Pg.139]

It is this diversity of metabolites that presents the most difficult challenge. There are not only a variety of metabolites but they are also dynamic spatially and temporally. To master a universal "omics" approach, one has to have several measurement strategies. For example, a suite of quantitative methods analyzing key metabolites from different biochemical pathways and metabolic "fingerprinting" that compares patterns like multidimensional hierarchical clustering or principal cluster analysis.9... [Pg.189]

This procedure is not solely specific for carbohydrate side chains of proteins. Unglycosylated proteins may also be stained. To identify glycosylated proteins, the sample should be run in at least two identical lanes cut the gel and stain a lane with the common protein silver stain (Protocols 2.4.2.1 to 2.4.2.4) and the other lane by the described method. Compare pattern and intensity to identify glycoproteins. Glycosylated macromolecules are also stainable with Schiff s reagent (Protocol 2.4.4.1), but with less sensitivity. [Pg.60]

Oil and water are being produced from formation A. Increased water production indicates the possibility of a casing leak. Water analysis gives the pattern below. The casing leak may be allowing water from formation B to enter the wellbore. Confirm this and determine the approximate ratio of water from formation B to water from formation A by comparing patterns of mixtures of water A and water B with the pattern of the produced water. [Pg.468]

Mass spectrometers are used not only to detect the masses of proteins and peptides, but also to identify the proteins, to compare patterns of proteins and peptides, and to scan tissue sections for specific masses. MS is able to do this by giving the mass-to-charge ratio of an ionized species as well as its relative abundance. For biological sample analysis, mass spectrometers are connected to an ionizing source, which is usually matrix-assisted laser desorption ionization (MALDI) [14], surface-enhanced laser desorption/ioni-zation (SELDI, a modified form of MALDI) [15], or electrospray ionization [16]. These interfaces enable the transfer of the peptides or proteins from the solid or liquid phase, respectively, to the gas (vacuum) phase inside the mass spectrometer. Both MALDI and electrospray ionization can be connected to different types of mass analyzers, such as quadrupole, quadruple-ion-traps, time of flight (TOF), or hybrid instruments such as quadrupole-TOF or Fourier transform-ion cyclotron resonance. Each of these instruments can... [Pg.163]

P—O—Alkyl Bands for P—O—Me (near 1180 cm-1) and P—O—i-Pr (three bands 1100-1200cm-1) are characteristic (5). P—O—alkyl vibrations can also be identified by comparing patterns produced by known groups to those in the unknown spectrum (47). A summary of some of these P—O—alkyl group patterns is shown in Figure 7. [Pg.370]

Figure 9 Relative proportions of lithological types within intracratonic to transform hasins and the averages for geological periods. Based on the North American cross-sections in Cook and Bally (1975). An independent compilation hy Berry and Wilkinson (1994) from the same source, hut based on different criteria, yielded comparable temporal patterns. CCL coarse elastics FCL fine elastics CS chemical sediments. A global review based on the Ronov (1982) database also yields comparable patterns (after Veizer and Ernst, 1996). Figure 9 Relative proportions of lithological types within intracratonic to transform hasins and the averages for geological periods. Based on the North American cross-sections in Cook and Bally (1975). An independent compilation hy Berry and Wilkinson (1994) from the same source, hut based on different criteria, yielded comparable temporal patterns. CCL coarse elastics FCL fine elastics CS chemical sediments. A global review based on the Ronov (1982) database also yields comparable patterns (after Veizer and Ernst, 1996).
Normalized incompatible trace element diagrams are shown in Figure 4. The basalts of the Belingwe belt are generally characterized by flat incompatible element patterns (1.7-4,6x primitive mantle) with marked enrichment of Th (28.3x) and Sr (8.2x). The komatiitic basalts show comparable patterns to those of the basalts but with spiked large ion lithophile element... [Pg.199]

When SSRIs were developed, we incorporated them into our ethnopsychopharmacological research. Initially, we compared patterns of use of the newer antidepressants with those of the older ones (TCAs). By the mid 1990s, it was becoming clear that SSRIs were rapidly replacing TCAs and other older antidepressant agents as drugs of first choice in the treatment of depression. [Pg.117]

A number of principles are illustrated by these two lateritic weathering profiles and by the pattern in which the constituent samples appear on Figure 3.10. The ubiquity of the lateritisation process is confirmed by the fact that comparable patterns of element behaviour occur in two profiles that differ... [Pg.74]

Williams, R.T. (1967) Comparative patterns of drug metabolism. Federation Proceedings, 26, 1029-1039. [Pg.54]

Chromatographic fingerprinting demands comparable patterns, which does not necessarily mean that compUcated extraction procedures are necessary as long as the products of interest can be relatively quantified with the aid of a suitable internal standard. Low molecular weight carboxylic acids in the polyethylene films were extracted and simultaneously methylated using acidified methanol to decrease the acids polarity and thereby increasing the... [Pg.15]

Stand-alone risk is the standard deviation in the return-on-investment calculations for different company-specific scenarios or, qualitatively, is a high/medium/low score relative to the typical business risk in the industry. The correlation with the portfolio risk reflects the correlation of major risks between projects and portfolios or, qualitatively, compares patterns of sensitivity analyses, and attaches high, medium and low scores. [Pg.1735]

X-ray diffraction results in Figure 2 show good and comparable patterns for Na-FeZSM-5 before and after hydrothermal treatment, except for a small decrease in peak height in 20=24.38 for the steamed sample however the framework structure of Na-FeZSM-5 is destroyed after the procedure in TPR. [Pg.244]


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See also in sourсe #XX -- [ Pg.379 ]




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