Factors affecting desirability

Several factors affect the bandshapes observed ia drifts of bulk materials, and hence the magnitude of the diffuse reflectance response. Particle size is extremely important, siace as particle size decreases, spectral bandwidths generally decrease. Therefore, it is desirable to uniformly grind the samples to particle sizes of <50 fim. Sample homogeneity is also important as is the need for dilute concentrations ia the aoaabsorbiag matrix. 

Other considerations enter into the operation of the magnetic element, such as the desired range of leakage inductance for each winding, electrostatic shielding, etc. (see Appendix D). These factors affect the size and cost of the final magnetic element. 

For a hot water environment general guidance can be given for the desirable properties in good enamels. Five factors affecting enamel life are corrosiveness of contact liquor, design, operating conditions, life of sacrificial anode (if any) and the durability of the enamel coat. This implies that... 

Thus, many factors affect the final product. By knowing the effects that each factor produces, one can choose and establish a set of conditions to reproduce the desired type of tofu. 

API-electrospray ionization involves three stages. First, there is the formation of charged droplets. Once the droplets are formed, solvent evaporation and droplet fission occur. Droplet fission is due to an increase in charge repulsion at the surface of the droplet as the solvent evaporates. Once the droplets become small enough (<10 nm), it is believed that charge repulsion produces ion evaporation from the surface of the droplet. Thus, ions are transferred from the solution to the gas phase. Factors affecting the production of the desired ions include analyte concentration, flow rate, matrix content, and analyte surface activity. In... 

In Section 2, factors that could lead to particle assembly and secretion into the supernatant were discussed. At this point a deeper analysis of the factors affecting cell infection will be made. Optimisation of the production process should take into account virus-cell interactions, and more specifically viral attachment and internalisation into the cell. The impact of chemical modifications of the medium in baculovirus attachment-internalisation has not been carefully studied. It is widely known for example, that serum increases the infec-tivity of baculovirus. These reviewers have had one case where we were only able to succeed in infecting Sf9 cells adapted to growth in serum-free media [52], with a baculovirus produced by Sf9 cells (not adapted to grow in serum-free media), after adding serum to the culture (authors unpublished observations). However, since serum is not desirable for use in industrial production, its utilisation should be avoided as much as possible. 

A variety of factors affect the ignition temperature and the burning rate of a high-energy mixture, and the chemist has the ability to alter most of these factors to achieve a desired change in performance. 

In order to achieve the best quality of a process or a product, the design step of the process or product is a very important one. Most of the quality needed later can be built into the product at the design stage. Here, the best quality is defined as obtaining or approaching as close as possible those characteristics which are desired. Moreover, one wishes to keep close to these properties when variations in process conditions appear, or when a product deteriorates through use or ageing, or when external (environmental or noise) factors affect the product. 

Primers of pressed tetryl are used for initiating charges of explosives. A factor affecting their initiating power is their density. For a certain purpose it was desirable that the density of the primers should exceed 1.4g/cm3. A scheme was required so that a decision whether to accept the batch as satisfactory or reject it because the average density was too low could be based on the results obtained from testing a fairly small randomly drawn sample of primers from the batch. The standard deviation was known from past experience to be 0.03 and the mean density when the presses were operating normally was 1.54. 

The combustion is an extremely complex process including many chemical and physical phenomena of transformation of matter. The need and desire to know and control this process urges man to study its various aspects. Organic polymers are but one example of the multitude of materials used by man. They possess peculiar features and properties which individually affect the material behavior in a critical fire situation. It is, therefore, important to study the flammability characteristics of polymeric materials and the factors affecting them. 

Air Conditioning is the branch of engineering devoted to the study of factors affecting both the physical and chemical conditions of the atmosphere within any structure. These factors include temp, humidity and motion, as well as distribution of dust, bacteria, odors and toxic gases. In air conditioning it is desirable that all factors be controlled but, if this is not feasible, at least the first three should be simultaneously controlled (see also Refrigeration and Ventillation)... 

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