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Total specific

The time rate of change of total specific energy of the element due to work is thus d(uP)ldh)lpo. If heat is added to the element from the surroundings at the rate (dQ/dt) per unit mass, then these contributions from work and heat can be equated to the change in internal and kinetic energy per unit mass... [Pg.28]

Based on the assumption that the total specific volume can be calculated as the sum of the partial specific volumes of the initial and forming components, and expressed pj by TaF5 molar fraction - N,- using equation (64), an equation representing the total variable density of the melt (p ) can be written as follows ... [Pg.161]

Mixed plastics waste appears to be well suited for use in energy recovery, either as a co-eombustion fuel in a power plant designed for solid fuels, or as the sole fuel in speeially designed plants. This paper reports test results on the co-combustion of mixed household plasties with eoal. The tests were performed in a bubbling fluidised bed low-pressure steam boiler. The results show that both inorganic and organic total specific emissions were lower for mixed household plasties than for coal. Tabulated data are presented. 3 refs. [Pg.106]

Low concentrations of solubilised jS-albumin inhibit ACh release in slices from rat hippocampus and cortex areas which show degeneration in AzD, but not in slices from the striatum which is unaffected. While not totally specific to ACh, since some inhibition of NA and DA and potentiation of glutamate release have been reported, this effect is achieved at concentrations of A/i below those generally neurotoxic. Since jS-amyloid can inhibit choline uptake it is also possible (see Auld, Kar and Quiron 1998) that in order to obtain sufficient choline for ACh synthesis and the continued function of cholinergic neurons, a breakdown of membrane phosphatidyl choline is required leading to cell death (so-called autocannibalism), /i-amyloid can also reduce the secondary effects of Mi receptor activation such as GTPase activity... [Pg.380]

The drug inhibition profile of (+)3H-SKF-10,047 binding is similar in many ways to that of (+)3H-3-PPP binding, but has some important differences. While pentazocine and SKF-10,047 are both potent inhibitors of (+)3H-SKF-10,047 binding, haloperidol and (+)3H-3-PPP inhibit only a portion of total specific (+)3H-SKF-... [Pg.16]

SKF-10,047 to rat brain membranes. Membranes were incubated with 8 nM (+fH-SKF-10,047 and various concentrations (1 - 64,000 nM) of (+)SKF-10,047 for 45 min at room temperature. Results are from a single experiment and values are the average of duplicate determinations. Lines indicate the high (KD 45 nM Bmax 22 pmol/g) and low (KD HO nM Bmax 86 pmol/g) affinity components of total specific binding. Also shown is the computer-generated curve of best fit for the data points. [Pg.17]

The problem is illustrated in a simplified way in Fig. 7.6. The quantities sel(A,B,..., N) and spec(A,B,..., N) not only define absolute characteristics but also a certain degree of selectivity and specificity of an analytical procedure. The measures can take values from 1 for fully selective or totally specific procedures, respectively. The range of selectivity R sel and the range of specificity R spec are given by... [Pg.217]

Under severe conditions (above 700°C), a potassium vapor is formed. It plays a special role in the activation of carbonaceous materials, easily penetrating in the graphitic domains that form cage-like micropores. The efficient development of micropores, which often gives a few-fold increase of the total specific surface area, is very useful for the application of these materials in supercapacitors [13-14]. [Pg.30]

Capacitance of this type of material reaches extremely high values over 300 F/g. Our target is to correlate it with the total specific surface area, pore size distribution, particle size and elemental composition of carbon. [Pg.30]

Figure 4.7 Temperature dependence of the contribution to the total specific heat, reveals magnetization in 5 0e applied field of a pow- two distinct phase transitions. (Redrawn der sample of Gd(hfac)3NIT-Et n evidencing from Ref. [53] with data kindly provided by a phase transition around 1.8K. In the inset A. Lascialfari. (Published by American the magnetic contribution to the specific physical society).) heat, evaluated by subtracting the lattice... Figure 4.7 Temperature dependence of the contribution to the total specific heat, reveals magnetization in 5 0e applied field of a pow- two distinct phase transitions. (Redrawn der sample of Gd(hfac)3NIT-Et n evidencing from Ref. [53] with data kindly provided by a phase transition around 1.8K. In the inset A. Lascialfari. (Published by American the magnetic contribution to the specific physical society).) heat, evaluated by subtracting the lattice...
Aryl halide compounds such as fluorobenzene derivatives can be used to form covalent bonds with amine-containing molecules like proteins. The reactivity of aryl halides, however, is not totally specific for amines. Other nucleophiles such as thiol, imidazolyl, and phenolate groups of amino acid side chains also can react (Zahn and Meinhoffer, 1958). Conjugates formed with sulfhydryl groups are reversible by cleaving with an excess of thiol (Shaltiel, 1967). [Pg.175]

Although the primary utility of active halogen compounds is to modify sulfhydryl groups in proteins or other molecules, the reaction is not totally specific. Iodoacetyl (and bromoacetyl) derivatives can react with a number of functional groups within proteins the sulfhydryl group of cysteine, both imidazolyl side chain nitrogens of histidine, the thioether of methionine, and... [Pg.182]

Reduction of particle size increases the total specific surface area exposed to the solvent, allowing a greater number of particles to dissolve more rapidly. Furthermore, smaller particles have a small diffusion boundary layer, allowing faster transport of dissolved material from the particle surface [58]. These effects become extremely important when dealing with poorly water-soluble drugs, where dissolution is the rate-limiting step in absorption. There are numerous examples where reduction of particle size in such drugs leads to a faster dissolution rate [59-61], In some cases, these in vitro results have been shown to correlate with improved absorption in vivo [62-64]. [Pg.179]

To translate this into operational form, we use the total specific mass flow rate, m, rather than molar flow rate, to show an alternative treatment to that used for a BR in Chapter 12. An advantage to this treatment is that in steady-state operation, m is constant, whereas the molar flow rate need not be. Thus, using Tref as a reference temperature... [Pg.338]

An industrial dryer for granular material can be modeled (Becker et al 1984) with the total specific cost of drying C( /m3) being... [Pg.179]

The term fracture toughness or toughness with a symbol, R or Gc, used throughout this chapter refers to the work dissipated in creating new fracture surfaces of a unit nominal cross-sectional area, or the critical potential energy release rate, of a composite specimen with a unit kJ/m. Fracture toughness is also often measured in terms of the critical stress intensity factor, with a unit MPay/m, based on linear elastic fracture mechanics (LEFM) principle. The various micro-failure mechanisms that make up the total specific work of fracture or fracture toughness are discussed in this section. [Pg.239]

The failure processes in thermoplastics composites with aligned glass fibers of sub-critical transfer length have been characterized (Lauke and Schultrich, 1983, 1986a, b Lauke et al., 1985 Lauke and Pompe, 1988) in terms of matrix fracture mode which is determined mainly by the ductility of the matrix material, loading rate and temperature. The total specific work of fracture, / t, is expressed as the sum... [Pg.252]

Note that in nature, these are all enzyme-catalysed reactions. This makes the reactions totally specific. It means possible competing Sn2 reactions involving attack at either of the two methylene carbons in SAM are not encountered. It also means that where the substrate contains two or more potential nucleophiles, reaction occurs at only one site, dictated by the enzyme. The enzymes are usually termed methyltransferases. Thus, in animals an A-methyltransferase is responsible for SAM-dependent A-methylation of noradrenaline (norepinephrine) to adrenaline (epinephrine), whereas an O-methyltransferase in plants catalyses esterification of salicylic acid to methyl salicylate. [Pg.200]

Although some European countries still accept the results of the four plate test as confirming the presence of antibiotic residues in samples ( ), other work indicates that FPT test is not necessarily reliable. The occurrence of natural microbial inhibitors in tissues has frequently been noted (4,9,49,82), It has also been frequently observed that the results obtained by microbial and physicochemical procedures sometimes differ considerably (9,10,45,82,86), Results obtained in our laboratory suggest that even inactivation by penicillinase may not be totally specific for B-lactam antibiotics (W), The specificity of immunoassay procedures depends on the specificity of the antibody used in the test (95), Specific antisera are not widely available at present. Physicochemical procedures are therefore essential for identification and confirmation of suspect residues detected by microbiological tests. [Pg.163]

Figure 8.2. Extraction of magnetic specific heat from the total specific heat for pure Ni (from Hoffman et al. 1956). Figure 8.2. Extraction of magnetic specific heat from the total specific heat for pure Ni (from Hoffman et al. 1956).
It is not always possible to identify a totally specific inhibitor. In such instances one of two approaches may be used. The inhibitor concentration is chosen such that it does not effect otheractivities,butmaynotinhibitthetargeted enzyme 100%. For example, if a specific CYP inhibitor was only found to inhibit the target enzyme by 80%, then a correction factor of 1.25 need be applied to any percentage inhibitions observed. Alternately a higher concentration is used which maximally inhibits the targeted activity also has some cross-reactivity against other enzymes. In this instance the sum of percent contributions likely exceeds 100% and therefore all values are adjusted down. [Pg.181]

The mesoporous materials produced from a precursory hectorite synthesized at 150°C had a total specific surface area of 848 m g a pore volume of 0.98 cm g and an average pore diameter of 46 5, values which are significantly higher than those of conventional pillared clays. [Pg.88]

So far there has been no published data on inversion channel mobility in metal-HfO -SiC structures. However, even assuming extremely poor channel mobility of 0.1 cmV(V s), HfO -SiC UMOSFET can offer total specific on-resistance equal to... [Pg.160]


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Total specific work of fracture

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