Required quantities

Zinc chloride is extremely deliquescent and it must therefore be introduced into the flask as rapidly as possible. Place a small stick of zinc chloride in a glass mortar, powder rapidly, and weigh out the required quantity. 

FoUowing the removal of the enriched dross, the required quantities of calcium, as a lead—calcium alloy and magnesium in the form of metal ingots, are added. The bath is stirred about 30 min to incorporate the reagents and hasten the reaction. The molten lead is cooled gradually to 380°C to permit the precipitate to grow and soHdify. The dross is skimmed for use with the next lot of lead to be treated. 

On the load side, the interrupter is connected through a cable to the equivalent circuit, with the required quantities of lumped resistance and reactance, to represent the motor to be tested, under a locked rotor condition. The circuit would also represent an interruption immediately after a start, to check for the most onerous operating condition for the interrupter to generate the highest surges as discussed earlier. 

Availability - In required quantities (single, multiple, limited, unlimited)... 

In automatic systems the filler sets the quantity to be filled on a meter, which closes a valve when this required quantity has been delivered. Overfilling has occurred because the wrong quantity was set on the meter, because there was already some liquid in the tank (left over from the previous load), and because the filling equipment failed. For these reasons many companies now fit their tank trucks with high-level trips, which automatically close a valve in the filling line [8]. 

The grade and quantity of product required were set on a meter. The driver inserted an authorization card and pressed the Start button. The required quantity was then delivered automatically. The filling arm had to be lowered before filling could start. 

In the previous section was given the experimental demonstration of two sites. Here the steady state scheme and equations necessary to calculate the single channel currents are given. The elemental rate constants are thereby defined and related to experimentally determinable rate constants. Eyring rate theory is then used to introduce the voltage dependence to these rate constants. Having identified the experimentally required quantities, these are then derived from nuclear magnetic resonance and dielectric relaxation studies on channel incorporated into lipid bilayers. 

Table 6. Molar weight of lead dioxide, required quantity, and utilization...

Calculations are necessary to determine the volume of the drum(s) and by how many inches or centimeters the hot water must be dropped to allow the acid to be injected. This may need to be translated into the number of minutes taken for the required quantity of water to be drained via the bottom BD valve. 

Live steam may be added directly in the required quantity. It has been shown that this produces only a slight increase in tire temperature, but the method is not generally favoured because any impurities that are present in the steam may be added at the same time. 

We could again apply the seven-step process in detail. Instead, we take a more compact approach. Begin by determining what species are present in the reaction mixture. Next, use the solubility guidelines to identify the precipitate. After writing the balanced net ionic reaction, use solution stoichiometry and a table of amounts to find the required quantities. 

Type of notification Information requirements Quantity placed on the market... 

Our third approach to 27 addressed the unavailability of 3-methoxy-2-cyclopentenone (31) in bulk quantities which necessitated the discovery of an alternative route (Scheme 7.7). Fortunately, the precursor to 31,1,3-cyclopentandione (35), was available in the required quantities and our efforts shifted to the use of this reagent Bromination of 35 with NBS, employing either KHC03 or KOH as the base, gave brominated dione 36 in 85% isolated yield. Unfortunately, direct cross-coupling of alkyl bromide 36 with boronic acid 12 under a variety of Suzuki-... 

The selection of a suitable emulsifying agent and its appropriate concentration are matters of experience and of trial and error. It is not necessary to use emulsifier amounts above the required quantities to produce complete interfacial films, unless an increase in the viscosity of the dispersion medium is intended. Reducing the interfacial tension makes emulsification easy but does not by itself prevent coalescence of the particles and resultant phase separation. Frequently, combinations of two or more emulsifying agents are used [2] to (a) adequately reduce the interfacial tension, (b) produce a sufficiently rigid interfacial film, and (c)... 

Thus, any laminate may consist of plies selected from paper, polyester, numerous other plastic films, foils, coatings, adhesive layers, metalization, etc. The choice of laminate structure is usually governed by technical requirements, cost of base materials, cost of lamination processes, cost of printing cylinder and process, and the amount of laminate required (quantity), the yield from which the cost per area of laminate is derived. 

Batch mixers typically consist of a large chamber heated by oil or electricity, containing intermeshing mixing blades that homogenize the resin with the additives. A much simplified schematic of a batch mixer is shown in Fig. 12.4. A weighed amount of polymer pellets drops into the chamber and is mixed and heated until molten. Once the polymer melts, the required quantities of additives are introduced. The material then mixes until the additives are hilly... 

All solutions are made in bidistilled water by dissolving the required quantities of analytical-grade reagents. Pure nitrogen gas is bubbled through the solutions to get rid of dissolved oxygen. 

When considering analytic description, asymptotically optimal estimates are of importance. Asymptotically optimal estimates assume infinite duration of the observation process for fjv —> oo. For these estimates an additional condition for amplitude of a leap is superimposed The amplitude is assumed to be equal to the difference between asymptotic and initial values of approximating function a = <2(0, xo) — <2(oc,Xq). The only moment of abrupt change of the function should be determined. In such an approach the required quantity may be obtained by the solution of a system of linear equations and represents a linear estimate of a parameter of the evolution of the process. 

Freshwaters are an essential resource which must be available not only in the required quantity but also in a precise quality. Nevertheless, in the last years, this quality has been threatened as a consequence of the increasing industrial activity, population growth and agricultural practices. In fact, only less than 1% of the world s freshwater resources are readily available for human use, and even this resource is unevenly distributed among the countries. A lack of water to meet daily needs is a reality for many people around the world, and water scarcity already affects every continent. In the underdeveloped countries, water scarcity forces people to rely on unsafe sources of drinking water. In the developed countries, this problem is much less critical where contamination of drinking water is the adverse... 

A production step can start only if the required quantities of raw and intermediate materials are available in the storage tanks, e.g., Ti can only be started when at least hi units of Si are present. 

A planned independent requirement is a planned requirement quantity for a product for a certain period of time. It is not necessarily created on the basis of any customer requirement. 

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