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Activators defined

Radioactive waste is characterized by volume and activity, defined as the number of disintegrations per second, known as becquerels. Each radionucHde has a unique half-life,, and corresponding decay constant, A = 0.693/tj 2 For a component radionucHde consisting of JS1 atoms, the activity, M, is defined as... [Pg.228]

Year Pi Level of productive activity defined by Eq. (9-217) Dimensionless... [Pg.801]

Heuristically, the dynamics proceed as follows the reaction term makes all active ((7 = 1) and refractory a = 2) sites cycle to their respective successor states. The diffusion term defines the manner in which activity (defined by sites with value (7 = 1) diffuses through the lattice. [Pg.421]

The expression (1/Z+ 1)] exp[— AHl /RT] at 0.85 V, better reflects the reality of a partially oxidized Pt surface and the critical effect of active site availability on the rate of the ORR. Effects of site availability were not considered in the calculations in Nprskov et al. [2004] of ORR activity for various metals. The expression used to calculate activity defined the ordinate parameter in the ORR volcano plots presented. This parameter was defined in Nprskov et al. [2004] as kT min,- log(k,/ko). [Pg.27]

The enzymatic activities of O -chymotrypsin in solution and adsorbed at the different surfaces are presented in Fig. 11, where the specific enzymatic activity (defined as activity per unit mass of protein) is plotted as a function of temperature. The enzyme loses activity due to adsorption. On the hydrophobic Teflon and PS surfaces, the activity is completely gone, whereas on the hydrophilic silica surface, or-chymotrypsin has retained most of its biological function. These differences are in agreement with the adsorption isotherms and the circular dichroism spectra. The influence of the hydrophobicity of the sorbent surface on the affinity of the protein for the sorbent surface, as judged from the rising parts of the adsorption isotherms (Fig. 8), suggests that the proteins are more perturbed and, hence, less biologically active when adsorbed at hydrophobic surfaces. Also, the CD spectra indicate that adsorption-induced structural perturbations are more severe at hydrophobic surfaces. [Pg.119]

The ratio of two activities defined on the basis of two different standard states is constant and does not vary with the composition of the solution ... [Pg.72]

This is also approximately true for solvent reorganization (Marcus, 1965). Thus, the standard fuel energy of activation, defined by (35) leads to expression (36) for k 2, in which /j2 is given by (37) and Ki2 is the equilibrium constant of the cross-exchange reaction. [Pg.13]

Read over the entire laboratory activity. Define... [Pg.46]

Extracts that exhibited significant inhibitory activity, defined as >50% inhibition of CPE at 100 (xg/mL, were advanced into secondary screening, which includes confirmation of activity observed during the primary screen using an expanded range of concentrations (dose response), plaque inhibition assay, and a one-step growth inhibition and testing of additional influenza viruses. As shown in Fig. 1.2a, the quantitative dose response assay was used to assess the potency of the most two... [Pg.4]

In Figure 2 the activity defined by the Equation 4 is plotted as a function of the affinity, where the affinity of the metal for halogen is defined by the Equation 6. [Pg.211]

Presently, data on about 40 reactions are known for Ni-Cu alloys. If the activity (defined as the relative rate with regard to Ni, measured at standard reaction conditions for both metals and all alloys) is plotted as a function of the Cu bulk concentration, all available data for various reactions are split into two groups, characterized as follows (245) (see Fig. 13) ... [Pg.187]

We have spent some time investigating possible heterogeneity in the Ci components of F. solani, T. koningii, and P. funiculosum. This has been done by testing for both Ci activity (defined as the enzyme that acts in synergism with the Cx enzymes to solubilize cotton cellulose or other crystalline cellulose) and cellobiohydrolase (release of cellobiose from H3P04-swollen cellulose) during different fractionation studies on the various Ci components. [Pg.191]

Referring to the procedure in this activity, define paint pigment. [Pg.108]

Major elements of Vico rocks display scattered distributions on Harker diagrams (Fig. 4.12). However, rocks from different periods of activity define more coherent groups, which suggest the occurrence of different magma types in the volcanic systems at various stages of activity. For... [Pg.83]

A STATE PRACTICE ACT/BOARD OF PHARMACY PROVISION Trudy Hamilton, Pharm.D., is a licensed pharmacist and is currently the manager of a hospital pharmacy department. In the state where Dr. Hamilton is licensed, nonpharmacist personnel are prohibited by both statute (the state pharmacy practice act) and state board of pharmacy regulation from engaging in activities defined as the practice of pharmacy. The specific activities that fall within the definition of the practice of pharmacy are limited to being personally performed by licensed pharmacists only. Such activities include counseling patients about their medications and responding to drug information requests from other health care professionals (e.g., physicians and nurses). [Pg.515]

At low temperatures, cannot be detected viscoelastic activity defined in terms of loss tangent. Using the modulus E Fig. 2.66 the results are better. Nevertheless the resolution remain weak although is higher than that reported by Cowie et al. [239-241],... [Pg.133]

Because of their variable thermodynamic state and concentration each reactant or product is characterized at any instant by an intrinsic activity, a, and the interplay between these activities defines the chemical action A, at that instant. The action changes at a rate proportional to A and to the change in affinity, as summarized by the linear homogeneous equation ... [Pg.251]

Figure 2.5. Metabolic scope for activity (defined as the difference between maximum metabolic rate and the SMR) and the metabolic scope for survival (defined as the difference between the SMR and maximally suppressed metabolic rates). Hummingbird estimates shown for normothermic conditions and for torpor metabolic rates (the latter gives the full biological scope for activity). Suppressed metabolic rates for the aquatic organisms assume temperatures of about 20°C (except for the pumpkinseed, where suppressed metabolism occurs during overwintering hibernation at about 4°C). (Modified from Hochachka (1990.)... Figure 2.5. Metabolic scope for activity (defined as the difference between maximum metabolic rate and the SMR) and the metabolic scope for survival (defined as the difference between the SMR and maximally suppressed metabolic rates). Hummingbird estimates shown for normothermic conditions and for torpor metabolic rates (the latter gives the full biological scope for activity). Suppressed metabolic rates for the aquatic organisms assume temperatures of about 20°C (except for the pumpkinseed, where suppressed metabolism occurs during overwintering hibernation at about 4°C). (Modified from Hochachka (1990.)...
The on-going research at the Center for Applied Energy Research in the preparation, characterization and activity testing of these catalysts has produced a number of continuous plug-flow and trickle bed reactor runs of 20 to over 600 hours duration using different hydrocarbon feedstocks. At the completion of experiments in which the activity, defined by conversion of the feedstock, has declined, experiments to determined if the acid and/or metal function was responsible for the observed deactivation were performed. The results of these experiments are reported below. [Pg.616]

The soot concentration, hydrocarbon species and soot temperature in the immediate vicinity of the droplet displayed closely coupled behavior. Hydrocarbon species, listed in approximate order of concentration were C2H2, CH4, C2H4, C2H6 and C3fs. Resolution of the propane and propylene peaks was not possible under current GC procedure, and these concentrations are reported merely as C3 compounds. The hydrocarbons were found to decay in the same time frame as the growth of the soot concentration. The zone of chemical activity, defined as where the vaporized hydrocarbon products react to form soot, is approximately 2 cm, which corresponds to 13 msec, after which the soot concentration decays due apparently to oxidation. [Pg.200]

The solvent strength e° is a dimensionless number and indicates the free energy of adsorption of the solvent per unit area of adsorbent with unit activity, defined as ° = 0 for n-pentane on alumina". For silica (Si02) as adsorbent, the ° values are smaller by a factor of ca. 0.8 [fi"" (SiCIj) 0.8 - ° (AI2O3)], but the ranking of solvents remains the same. [Pg.495]

Given as ascorbatepyrogallohguaiacol (ascorbate activity defined as 1 Though to be a class III, not a class I, peroxidase. [Pg.322]

Given as ascorbate pyrogaIlol guaiacol (ascorbate activity defined as l nd = not determined). Camellia sinensis. [Pg.323]

Virus protection activities defined in a policy and procedure for governing vims protection for SCADA systems include methods for checking automation system data and software integrity, e.g., standards and requirements for installing fixes/patches for known automation control system problems. Periodic assessment of automation control system vulnerabilities are to be undertaken in the light of emerging knowledge. [Pg.637]

Equilibrium conditions for chemical reactions in nonideal solutions are conventionally expressed in terms of activities, defined as... [Pg.534]


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See also in sourсe #XX -- [ Pg.78 ]




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Activation energy defining equation

Activation energy, apparent defining equation

Activation energy, defined

Activation temperature 0, defined

Active catalyst, defined

Active device, 355 defined

Active pharmaceutical ingredient defined

Active sites defined

Active transport defined

Activity coefficient defined

Activity defined

Activity-based costing defined

Chemical activity, defined

Define Activities to Support Themes

Define Unique Activities to Support These Streams

Defining Activities

Defining Activities

Defining activation

Design of Well-Defined Active Sites on Crystalline Materials for Liquid-Phase Oxidations

Energy of activation defined

Identity activation function, defined

Intrinsic activity, defined

Metabolic activation, organic defined

Optical activity, defined

Optically active particles defined

Quantitative structure-activity defined

Sigmoid activation function, defined

Solute defining activity

Stoichiometric Activity of Well-Defined, Metal Alkylidenes with Alkanes

Transfer activity coefficient defined

Unit activity, defined

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