Productivity, parameter studied

A month-long study of the effects of ultraviolet radiation (UV) on phytoplankton and ice-algae collected from Arthur Harbor, Anvers Island, Antarctica, was carried out during November-December 1987. The parameters studied included primary production rates, photosynthetic... 

The draft-tube airlift bioreactor was studied using water-in-kerosene microemulsions [263], The effect of draft tube area vs. the top-section area on various parameters was studied. The effect of gas flow rates on recirculation and gas carry over due to incomplete gas disengagement were studied [264], Additionally, the effect of riser to downcomer volume was also studied. The effect of W/O ratio and viscosity was tested on gas hold-up and mass transfer coefficient [265], One limitation of these studies was the use of plain water as the aqueous phase in the cold model. The absence of biocatalyst or any fermentation broth from the experiments makes these results of little value. The effect of the parameters studied will greatly depend on the change in viscosity, hold-up, phase distribution caused due to the presence of biocatalyst, such as IGTS8, due to production of biosurfactants, etc., by the biocatalyst. Thus, further work including biocatalyst is necessary to truly assess the utility of the draft-tube airlift bioreactor for biodesulfurization. 

In a parameter study of the BKW equation of state one may adjust parameters alpha, beta and kappa, as well as the covolumes of the deton products... 

The same technique was applied to a mixture of polyethylene terephthalate and acrylic acid (34). The polymerizations were followed by looking at the acid number of the product the parameters studied were time, temperature, and monomer content see Fig.9a,b,c. The hydrophilicity, the solubility of the copolymer in benzyl alcohol, aniline, and a mixture of phenol and CHQ3 were increased by graft copolymerization. 

For solving mixtures of copper products, parameters derived from Tafel analysis of voltammetric curves were used [127, 133, 183]. The use of this formalism requires (i) that electrochemical processes for individual analytes can be taken as independent, and (ii) strong overlapping of voltammetric curves. Both conditions apply in our studied samples because these systems can be taken as constituted by separated micro- or nanograins of different solid compounds. Tafel analysis is based on the assumption that the rising portion of voltammetric curves can, in general, be... 

A considerable amount of research pertaining to the Maillard reaction has revolved around the conditions of the reaction (1, 2, 3). However, very little attention has been directed toward the conditions for maximizing the yield of antioxidative products. The studies that have been conducted have focused primarily on very specific reactants, as does this study, and although some generalizations can be drawn about reaction parameters, most reactant combinations used so far have only been treated with a single set of reaction conditions. 

As a result of the reaction parameter study, the products, aromas and chemistry of the reaction between cystine and DMHF is more clearly understood. The major volatile components generated by this reaction are 3,5-dimethyl-l,2,4-trithiolanes, thiophenones, thia-zoles and 2,4-hexanedione. The first three groups of compounds contribute greatly to the quality of the overall aroma which is roasted, meaty and burnt. Further variations in aromas may depend on the proportions of these components present as reaction products. Optimal conditions for producing the major components of interest from the title reaction have been determined. 

Experimental data for the angles of reflection (29) and the interplanar spacing (d) obtained from the diffractograms of the electrolysis products under study, and the literature data for these parameters for C6o fullerenes with the fee and hep... 

Hydrothermal Treatment of Base Hydrolysis Products Hydrothermal treatment has been investigated by LANL as a possible secondary treatment for base hydrolysis products from explosives destruction. Small-scale experiments offered promising results. Larger-scale experiments were required to look more carefully at the feasibility for such a treatment approach. More product analysis and parameter studies were also required. 

Cene Cene product Source Cellular role(s) Target plant Parameter studied Reference... 

We can conclude by repeating our initial remark the amoimt of experimental data is still not sufficient and the further work is necessary. Moreover, in most actual studies carried out in the gas phase only the average cross-sections may be determined and this necessitates the averaging over the statistical distribution of velocities and of impact parameters in all theoretical treatments. From this point of view, crossbeam experiments, where the dependence of quenching cross-sections on the relative velocity of colliding particles (and even on the impact parameters, if the angular distribution of products is studies) may be determined, would be of highest interest. 

Work at this stage was carried out in order to obtain production data under ordinary field conditions, also to test the existing systems for collection, separation and measurements of the extracted crude oil. These data, then, served as basis for evaluating the effectiveness of the subsequent thermal treatment. Production data on wells located within field sections selected for experimental work were collected and studied with special attention. At the same time, necessary adjustments were made in all components of the production equipment, including those of data collection and processing. Measurements were taken of all primary production parameters, that is, of quantities of produced oil, gases and formation water, of dynamic and static fluid levels, of characteristics of crude oil, gases and water, and of formation temperatures and pressures. 

The value of the stoichiometric yield of a process is of secondary importance for the productivity and thus the production-integrated environmental protection. The material planning quality BA, of a process is more important, because the aim of production-integrated environmental protection is an increase in the material planning productivity [58 a]. MFA as a computer based method allows systematic management via parametic studies. The main aim is the maximization of the output of the target... 

Measurement of C requires more sophisticated and expensive rheometers and more involved experimental procedures. It must be remembered that experiments have to he carried out below the critical strain value (see Sec II), or in [he region of linear viscoelastic behavior. This region is determined by measuring the complex modulus G as a function of the applied strain at a constant oscillation frequency (usually 1 Hz). Up to 7, G does not vary with the strain above Yr, G tends to drop. The evaluation of oscillatory parameters is more often restricted to product formulation studies and research. However, a controlled-fall penetrometer may be used to compare the degree of elasticity between different samples. Creep compliance and creep relaxation experiments may be obtained by means of this type of device. In fact, a penetrometer may be the only way to assess viscoeIa.sticity when the sample does not adhere to solid surfaces, or adheres too well, or cures to become a solid or semisolid. This is the case of many dental products such as fillings, impression putties, sealants, and cements. 

The results of these trimerization parameter studies indicated that useful levels of trimerized product (crosslinks) could be anticipated from the use of this catalytic trimerization approach in fabricating resin/flber composites. Two additional points need to be made with respect to the... 

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