Control choice

Harlap S, Kost K, Forrest JD. Preventing Pregnancy, Protecting Health a New Look at Birth Control Choices in the United StatesNew York The Alan Guttmacher Institute . 1991. 

The CEEPES (1993) model describes farmer weed control choices with approximately 500 herbicide and tillage options. The expert opinions of Iowa state economists and weed control specialists were used to obtain the yield and cost changes shown in Table 12.3 for the entire country. The description of the CEEPES model does not explain how replacement herbicides were chosen. However, the actual herbicides chosen are given, and they are very different from those in the Pike et al. (1994) and Danielson et al. (1993) studies. The state weed scientists in the Pike et al. (1994) and Danielson et al. (1993) studies estimated that cyanazine, dicamba, 2,4-D, and bromoxynil would replace 80% of the atrazine on com, while the CEEPES experts said that these four herbicides would only replace 36% of... 

Control choices continue to provide many novel approaches. The users have to recognize what to specify such as soft, programmable, hybrid, wireless sensing/monitoring,160>161 or entirely new architectures. One should define control not by the PC box performing it, but rather by virtue of the problem it solves. To do this, users must consider the choices available at each level within a controller. The choice requires personal knowledge or help from a reliable source to determine which type of controller is appropriate for a specific application. 

Emphasis One reaction Pathways, interconnected (control choices) ... 

Table 3-2 introduced the choices for controlling hazards and the preferred order for controls. Recall that those choices and their order are called the Hierarchy of Controls for hazards. Some also refer to Table 3-2 as the Order of Precedence. This chapter will explore the hazard control choices further. 

Abreu, M.J. 2014. Suitable Control Choices. Exploring the roles of clean air suits and scrub suits in infection control. European Medical Hygiene Magazine, 21-27. 

Individual enzymes or classes of enzymes in soils have been assayed under a variety of conditions, thus limiting the scope for comparing activities reported from different laboratories. Galstyan recently has described assays for five enzymes considered important for assessment of soil biological activity and has called for a standardization of methods. Roberge and Burns have reviewed aspects of methodology regarding pH control, choice of buffer if any, duration of assay, substrate concentration, and soil sterilization. 

The choice of contract type will depend upon the type of work, and the level of control which the oil company wishes to maintain. There is a current trend for the oil company to consider the contractor as a partner in the project (partnering arrangements), and to work closely with the contractor at all stages of the project development. The objective of this closer involvement of the contractor is to provide a common incentive for the contractor and the oil company to improve quality, efficiency, safety, and most importantly to reduce cost. This type of contract usually contains a significant element of sharing risk and reward of the project. 

The sensitivity to defects and other control parameters can be improved by optimizing the choice of the probe. It appears, after study of different types of probes (ferritic, wild steel, insulator) with different geometries (dish, conical,. ..), necessary to underline that the success of a feasibility research, largely depends on a suitable definition of measure collectors, so that they are adapted to the considered problem. 

The sensitivity to defects and other control parameters can be improved by optimizing tlie choice of tlie probe. 

The use of these techniques is an important element of industrial policy since they contribute to the creation of a business friendly regulatory environment allowing the combination of measures taken for internal organisational reasons and obligations of certification without lowering the level of safety to be achieved. Wlienever possible a choice between product control and quality assurance procedures is offered to manufacturers. 

Other possible choices are to use two pairs of frequencies which together have the same energies. The key point is that quantum interference between the two pathways can be used to control the branching ratio. This coherent-control approach is very general and can be used in virtually any branch of molecular dynamics, including scattering and photo-dissociation. 

Given tire general description of tire electromagnetic field, let us explore the sources available for optoelectronics. The one primary light source for optoelectronic device and system architectures is tire laser. The laser [10] is tire source of choice simply because if we want to control light fields tliey need to be well defined at tire start and tire laser is tire most... 

As noted earlier, control of the column s temperature is critical to attaining a good separation in gas chromatography. For this reason the column is located inside a thermostated oven. In an isothermal separation the column is maintained at a constant temperature, the choice of which is dictated by the solutes. Normally, the tern-... 

The previous discussion demonstrates that measurement of precise isotope ratios requires a substantial amount of operator experience, particularly with samples that have not been examined previously. A choice of filament metal must be made, the preparation of the sample on the filament surface is important (particularly when activators are used), and the rate of evaporation (and therefore temperature control) may be crucial. Despite these challenges, this method of surface ionization is a useful technique for measuring precise isotope ratios for multiple isotopes. Other chapters in this book discuss practical details and applications. 

Control of sonochemical reactions is subject to the same limitation that any thermal process has the Boltzmann energy distribution means that the energy per individual molecule wiU vary widely. One does have easy control, however, over the energetics of cavitation through the parameters of acoustic intensity, temperature, ambient gas, and solvent choice. The thermal conductivity of the ambient gas (eg, a variable He/Ar atmosphere) and the overaU solvent vapor pressure provide easy methods for the experimental control of the peak temperatures generated during the cavitational coUapse. 

Reactions with Alcohols. The addition of alcohols to acrolein may be catalyzed by acids or bases. By the judicious choice of reaction conditions the regioselectivity of the addition maybe controlled and alkoxy propionaldehydes, acrolein acetals, or alkoxypropionaldehyde acetals produced in high yields (66). 

The type of initiator utilized for a solution polymerization depends on several factors, including the solubiUty of the initiator, the rate of decomposition of the initiator, and the intended use of the polymeric product. The amount of initiator used may vary from a few hundredths to several percent of the monomer weight. As the amount of initiator is decreased, the molecular weight of the polymer is increased as a result of initiating fewer polymer chains per unit weight of monomer, and thus the initiator concentration is often used to control molecular weight. Organic peroxides, hydroperoxides, and azo compounds are the initiators of choice for the preparations of most acryUc solution polymers and copolymers. 

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