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Values clarification

Values clarification A common component of affect-oriented prevention programs typically involves exploration of one s own needs and beliefs regarding drugs (Chapter 16). [Pg.449]

Most surface waters contain varying amounts of suspended solids, including silt, clay, bacteria, and vimses and it is necessary to remove these before to distribution to the domestic or industrial consumer. Suspended soHds not only affect the acceptabiUty of the water but also interfere with disinfection. The principal treatment processes are sedimentation (qv) and filtration (qv). Sedimentation alone is rarely adequate for the clarification of turbid waters and is of htde or no value for the removal of such very fine particles as clay, bacteria, etc. Table 1 shows the effect of particle size on the sedimentation rate of a soHd having a specific gravity of 2.65 in water at 20°C. [Pg.275]

By objective. The process goal of filtration may be diy solids (the cake is the product or value), clarified liquid (the filtrate is the product of value), or both. Good sohds recovery is best obtained by cake filtration, while clarification of the liquid is accomplished by either depth or cake filtration. [Pg.1692]

Apparently, the main idea behind this approach needs certain clarification. For example, formula (38) necessitates imposing a nonzero background temperature prior to the front. In spite of this fact, there are some delays in introducing new intervals, thus causing large deviations of a solution in a vicinity of the front. Formula (37) is useless for very large values of the index cr a > 20). Formula (36) has the best accuracy and reproduces rather accurately without concern of the background temperature. [Pg.523]

The meaning of the boundary condition (12) is known to us. On the other hand, condition (13), which assigns the boundary value y, needs certain clarification. In this way, the difference boundary-value problem (9)-(14) can be put in correspondence with problem (7). The method for solving this difference problem is mostly based on alternative forms of equations (9)-(10) ... [Pg.549]

The activities of pectic enzymes present in cultivation medium (98 mg of protein extracted from 2.5 1 of pectin medium) were poor, not leading to the clarification of cultivation medium indicating the cleavage of pectate chains, with values 0.024 pmol/min.mg for polygalacturonase, 0.004 pmol/min.mg for exopolygalacturonase, 0.034 pmol/min.mg for pectinesterase and 0.005 pmol/min.mg for pectin lyase. The production of individual pectic enzymes was dependent on the C-source used in the cultivation medium (Tab. 1). [Pg.902]

Complementary to the passage, one can also consider the retention of a component as R = 1 - S (also called rejection). Retention can also be either an observed or an intrinsic measurement. Retention is useful in considering retained products during concentration mode operation. Other component separation characterizations include the log reduction value LRV =- logS which is used to characterize high-efficiency separations with permeate products (sterilization). The beta ratio P = I/S is sometimes used in NFF for clarification applications. [Pg.37]

Prominent among the heavy metals found in the wastewater generated in the copper sulfate industry are copper, arsenic, cadmium, nickel, antimony, lead, chromium, and zinc (Table 22.11). They are traced to the copper and acids sources used as raw materials. These pollutants are generally removed by precipitation, clarification, gravity separation, centrifugation, and filtration. Alkaline precipitation at pH values between 7 and 10 can eradicate copper, nickel, cadmium, and zinc in the wastewater, while the quantity of arsenic can be reduced through the same process at a higher pH value. [Pg.932]

As it was mentioned above, there is no unanimous opinion concerning the nature of precursors obtained in Pechini-type syntheses, and these are called polymeric resins (glasses) or gels. Clearly, this contradiction has little to do with technical aspects of the synthesis. On the other hand, its clarification will be of great value for the physics of amorphous state. [Pg.505]

The instrument response (T) changes dramatically with little or no change in analyte value (X). In this example additional clarification is required to define the relationship between the analyte value and the spectroscopic/chemical data for the sample, as interfering factors other than analyte concentration are affecting the instrument response. [Pg.381]

While most of the Matlab listing in Main EFAl, m is close to self explanatory, a few statements might need clarification. The singular values are stored in the matrix EFA f which has ns rows and ne columns. It is advantageous to plot the logarithms of the singular values their values span several orders of magnitude and cannot be represented in a normal plot. [Pg.261]

Some aspects of the sequence classification of esterases need clarification [87]. In the case of ES4, two separate forms were purified and found to have virtually identical specificity and chemical properties. The enzymes ES8 and ES10 appear to be a monomer and a dimer, respectively, of the same enzyme, and ES9 is probably a combination of ES7 and ES8/10 [88]. For esterase ESI5, different p/ values have been reported by different authors. [Pg.49]

Two broad areas of application for xylanolytic enzymes have been identified (1). The first involves the use of xylanases with other hydrolytic enzymes in the bioconversion of wastes such as those from the forest and agricultural industries, and in the clarification and liquification of juices, vegetables and fruits. For these purposes, the enzyme preparations need only to be filtered and concentrated as essentially no further purification is required. Several specific examples of applications involving crude xylanase preparations include bioconversion of cellulosic materials for subsequent fermentation (2) hydrolysis of pulp waste liquors and wood extractives to monomeric sugars for subsequent production of single cell protein (3-5). Xylose produced by the action of xylanases can be used for subsequent production of higher value compounds such as ethanol (6), xylulose (7) and xyIonic acid (8-9). [Pg.642]

Furthermore, the authors were the first to gamer evidence that the back electron-transfer (BET) from the CO2 anion-radical to the cation-radical of the ACT, leading to the formation of the activator s excited singlet state. The AG bet values were calculated on the basis of the CIEEL sequence (Scheme 44), so this finding contributes further to confirm this mechanism. However, data obtained on two less commonly used activators 9,10-dimethoxyanthracene and, particularly, 9,10-dicyanoanthracene do not fit into the correlations obtained for the other activators, implying that details of this mechanism still require clarification. A putative explanation for the fact that 9,10-dimethoxyanthracene and 9,10-dicyanoanthracene do not correlate as predicted by CIEEL is the involvement of an alternative pathway, in which CO2 cation radical and the anion radical of the activator are formed by initial electron transfer from the peroxide to the activator (Scheme 45). ... [Pg.1268]


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See also in sourсe #XX -- [ Pg.416 ]




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Clarification

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