Activity and content

Letunov, V. N., and Vysotski, E. S. (1988). Bioluminescence activity and content of calcium-dependent photoprotein in Obelia longissima (Pallas) hydroid colonies. Zh. Obshch. Biol. 49 381-387. 

Affinity capture-release electrospray ionization mass spectrometry (ACESIMS) and isotope-coded affinity tags (ICAT) are two recently introduced techniques for the quantitation of protein activity and content with applications to clinical enzymology... 

The effects of treatment with selegiline, an MAO-B inhibitor, on plasma levels of insulin-like growth factor I (IGF-I) (as indicator of GH secretion), levels of monoamines and their metabolites, and the activity and content of tyrosine hydroxylase — the rate-limiting enzyme in the biosynthesis of catecholamines — in the hypothalamus and hypophysis of old animals have been studied. It is believed that the antiaging effects of selegiline are due to restoration of hypothalamic hormones. 

E3. Emmons, C. L., Peterson, D. M., and Paul, G. L., Antioxidant capacity of oat (Avena saliva L.) extracts. 2. In vitro antioxidant activity and contents of phenolic and tocol antioxidants. J. Agric. Food Chem. 47, 4894-4898 (1999). 

The deficits in TPH activity and content of 5-HT and 5-HIAA normally seen in MDMA-treated rats were attenuated by concurrent administration of MT these deficits returned when L-dopa was administered concurrently with MT and MDMA. Prior treatment with 6-OHDA (described above) selectively attenuated the serotonergic deficits in the neostriatum while no protection by 6-OHDA occurred in the hippocampus or cerebral cortex. Prior depletion of DA with reserpine attenuated the neurotoxicity of MDMA. From these experiments the authors concluded that DA and/or its metabolites play a key role not only in the neurotoxicity observed with methamphetamine, but also with its methylenedioxy analogs. 

K. Yamauchi, and R. Kato (1988). Alteration of hepatic drug metabolizing activities and contents of cytochrome P-450 isozymes by neonatal monosodium glutamate treatment. Biochem. Pharmacol, yi, 1687-1691. 

Figure 1. Relationship of lipoxygenase activity and content of pentane and hexa-nal in the volatile profiles of peanut kernels during maturation (30)...

Rklationship betwekn Enzymic Activities and Content op Membrane (Insoluble) Protein in Chick Cardiac and Skeletal Muscle Mitochondria ... 

Perucka, 1. and Materska, M. 2003. Antioxidant activity and contents of capsaicinoids isolated from paprika fruits. Pol. J. FoodNutr. Sci. 2 15-218. 

To make the picture even more complicated the steady increase of A-type centres with Tact going from 300 °C to 600 °C is not paralleled by some other data which are ascribed to the Cr(II)A species or its Cr(VI) precursor. As shown in Fig. 18.1, the structured chemoluminescence, photoluminescence, polymerization activity, and content of CrC working catalyst rise steeply in the range of 450 °C to 700 °C with a turning point near 600 °C. At this temperature the Cr(II)A bands in the VIS spectra are already fully developed (Fig. 18.4). 

Beckett et al observed a 50-70% decrease in 5 D-II activity in the brains of selenium-deficient rats, raising the possibility that this isozyme also was a selenoproteinii. However, 5 D-II is not a selenoproteini2,l3 and we have shown that the decrease in brain and pituitary 5 D-II activity and content observed in selenium-deficient animals is actually due to enhanced 5 D-II turnover resulting directly from the increased serum T4 concentrations associated with selenium deficienc). ... 

Very Htfle data are available regarding effects of anaboHc steroid implants on the Hpid metaboHsm in growing mminants. Lipogenic enzyme activity and fatty acid synthesis in vitro were elevated in subcutaneous adipose tissue from bulls implanted with estradiol (44), which may account for the increase in fat content of carcasses reported in some studies. TBA implants have no effect on Hpogenesis in intact heifers, and only tend to reduce Hpogenic enzyme activities in ovariectomized heifers (45). 

Industrial Wastewater Treatment. Industrial wastewaters require different treatments depending on their sources. Plating waste contains toxic metals that are precipitated and insolubiHzed with lime (see Electroplating). Iron and other heavy metals are also precipitated from waste-pidde Hquor, which requires acid neutralization. Akin to pickle Hquor is the concentrated sulfuric acid waste, high in iron, that accumulates in smokeless powder ordinance and chemical plants. Lime is also useful in clarifying wastes from textile dyeworks and paper pulp mills and a wide variety of other wastes. Effluents from active and abandoned coal mines also have a high sulfuric acid and iron oxide content because of the presence of pyrite in coal. 

Initiators. The degree of polymerization is controlled by the addition rate of initiator(s). Initiators (qv) are chosen primarily on the basis of half-life, the time required for one-half of the initiator to decay at a specified temperature. In general, initiators of longer half-Hves are chosen as the desired reaction temperature increases they must be well dispersed in the reactor prior to the time any substantial reaction takes place. When choosing an initiator, several factors must be considered. For the autoclave reactor, these factors include the time permitted for completion of reaction in each zone, how well the reactor is stirred, the desired reaction temperature, initiator solubiUty in the carrier, and the cost of initiator in terms of active oxygen content. For the tubular reactors, an additional factor to take into account is the position of the peak temperature along the length of the tube (9). 

The commercial product has an active oxygen content of at least 15%. This product has replaced the hexahydrate in some household detergents and other domestic products because it dissolves faster and has a greater content of active oxygen per unit volume of granular product. 

Alkyl hydroperoxides can be Hquids or soHds. Those having low molecular weight are soluble in water and are explosive in the pure state. As the molecular weight increases, ie, as the active oxygen content is reduced, water solubiUty and the violence of decomposition decrease. Alkyl hydroperoxides are stronger acids than the corresponding alcohols and have acidities similar to those of phenols, Alkyl hydroperoxides can be purified through their alkali metal salts (28). 

In spite of low copper contents, massive horizontal development renders porphyry deposits amenable to large-scale production methods. Porphyry deposits are associated with igneous activity and intmsion of molten rocks into cooler parts of the earth s cmst, often in connection with the formation of mountains. Erosion of mountainous areas exposes these deposits to weathering, and, under the right conditions, enables the formation of oxidized or secondary copper deposits. Copper mines in the United States are Usted in Table 2. 

A large number of parameters are involved in the choice of the corrosion protection system and the provision of the proteetion eurrent these are deseribed elsewhere (see Chapters 6 and 17). In partieular, for new locations of fixed production platforms, a knowledge of, for example, water temperature, oxygen content, conductivity, flow rate, chemical composition, biological activity, and abrasion by sand is useful. Measurements must be carried out at the sea location over a long period, so that an increased margin of safety can be calculated. 

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