Effect of process variables

Effect of Process Variables. Several investigators (103,106) have studied the effects of the following reaction parameters ... 

In this chapter, the polymerization methods used for the production of uniform latex particles in the size range of O.I-lOO /Ltm are described. Emulsion, swollen emulsion, and dispersion polymerization techniques and their modified forms for producing plain, functionalized, or porous uniform latex particles are reviewed. The general mechanisms and the kinetics of the polymerization methods, the developed synthesis procedures, the effect of process variables, and the product properties are discussed. 

Andry, M. C. Levy, M. C. (1997). In vitro degradation of serum albumin microcapsules Effect of process variables. International Journal of Pharmaceutics, Vol. 152, 2, (Jime 1997), pp. (145-151), ISSN 0378-5173... 

The results of research into the fluidised bed pyrolysis of plastic wastes are reported, with reference to determining the optimum process conditions for the process with respect to the reactor behaviour. The study investigates the effects of process variables such as bed temperature, polymer feed rate, bed hold-up, fluidising velocity, and size of inert material. Findings illustrate the importance of the knowledge of the hydrodynamics of the fluidised bed and of the interactions between bed and polymer particles in the design and operation of the reactor. 15 refs. 

As may be seen from Figure 3, first order plots based on the conversions obtained by both methods were linear with slopes in close agreement. The apparent rate constant is 0.57 h"1 based on H2 evolution and 0.54 h"1 based on the formation of glycine salt thereby indicating that it is valid to use the simpler H2 evolution measurements when measuring the effects of process variables on the reaction. 

Figure 3. Seeded overflow CSTR, conversions vs. dimensionless time Effect of process variables (see also Table III).

Liu, L. X., and Litster, J. D., Spouted Bed Seed Coating the Effect of Process Variables on Maximum Coating Rate and Elutriation, Powder Technol., 74 215-230 (1993b)... 

This paper reviews the recent experimental results and mathematical modeling from the literature on electrocodeposition of particles in a metallic matrix. Although many different particle/metal systems are discussed, the electrocodeposition of alumina particles in copper matrix is highlighted as this widely-studied system illustrates the various effects of process variables and it exemplifies the types of contradictions concerning these results in the literature. 

A finely ground physical mixture of 5% Ru (as RuC )/ZSM-5 which was subsequently pelletized was used in the study of the effects of process variables on synthesis gas conversion. 

Studies were performed to demonstrate the effects of process variables such as light intensity, cure time, initiator concentration, and fiber loading on the evolution of the mechanical properties of the polymers and composites. Even with moderate incident light intensities (less than 500 mW/cm2) and high fiber loadings (60 wt.% random fibers) the photopolymerizations proceed to completion in minutes and exhibit mechanical properties equivalent to samples prepared by traditional... 

Franklin, N.L., Pinchbeck, P.H., and Popper, F. (1956), A Statistical Approach to Catalyst Development Part I The Effect of Process Variables on the Vapour Phase Oxidation of Naphthalene, Trans. Instn. Chem. Engrs, 34, 280-293. 

Empirical Modeling. The effect of process variables on the rate of depKJsition and properties of electrolessly depKJsited metals is usually studied by one-factor-at-a-time experiments (one-factor experiments are discussed further later in the book). In these experiments the effect of a single variable (factor), such as Xj, in the multivariable process with the response y, y = fixi, %2, X3,. .., x ), is studied by varying the value (level) of this variable while holding the values of the other independent variable fixed, y Any prediction (extrapolation) of the effect of a single variable on... 

Murray M, Laohavichien A, Habib W, et al. Effect of process variables on roller-compacted ibuprofen tablets. Pharm Ind 1998 60 257-62. 

Smith, P.G. and Nienow, A.W., Particle growth mechanisms in fluidised bed granulation - part I. The effect of process variables, Chem. Eng. Sci., 38 (1983) 1223-1231. 

Davies, W.L. and Gloor, W.T., Batch production of pharmaceutical granulations in a fluidized bed, I. Effects of process variables on physical properties of final granulation, /. Pharm. Sci., 60 (1971) 1869-1874. 

Dewettinck, K. and Huyghebaert, A., Top-spray fluidized bed coating effect of process variables on coating efficiency, Lebensmittel Wissenschaft Technologie, 31 (1998) 568-575. 

Dallas, Texas, 6th-10th May, 2001, paper 115 EFFECT OF PROCESSING VARIABLES ON THE QUALITY OF INJECTION MOLDED FOAMED PARTS... 

TABLE 2-2. Effect of Process Variables on Thermal Cracking Unit Products... 

DOE is a methodical statistics approach to studying the qualitative effects of process variables. Variables of interest are given a number of values based on the expected relationships [8]. For example, if the relationship is expected to be linear over a range, two variations can be used to approximate the effect of the variable. For effects that are expected to be quadratic, three variations may be needed. These variations are then matrixed to create a set of trials that differentiate and quantify the effect of each variable. If the number of variables is small, then the experiments can be designed as a full factorial. An example of a full two factorial design of an experiment for three variables is shown in Table 15.1. 

EFFECT OF PROCESSING VARIABLES ON ORGANOLEPTIC ACCEPTABILITY OF BEEFSTEAKS... 

The amount of limonin incorporated into the juice is influenced by a number of juice processing variables. Factors such as the maceration of albedo, central vascular bundle and carpellary membranes, the time of contact between the rag and the juice, and the amount of pulp incorporated into the final juice product are known to influence juice limonin content. The uneven distribution of XIV in the various tissues of the fruit (Table VII) is largely responsible for the effects of processing variables (33). 

Arunothayanun, P., et al. 2000. The effect of processing variables on the physical characteristics of non-ionic surfactant vesicles (niosomes) formed from a hexadecyl diglycerol ether. Int J Pharm 201 7. 

The objective of this study was to investigate the feasibility of using a tubular reactor for the seeded emulsion polymerization of vinyl acetate, and to study the effect of process variables on conversion rate and latex properties. 

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