Physical requirements

Physical requirements of fluid fertilizers include freedom from sediments, suitably low viscosity, low vapor pressure, and noncorrosivity with regard to available handling equipment. Using anhydrous ammonia, the chief physical concerns, are in the safety of handling under pressure and the minimizing of vapor loss during injection into the sod. [Pg.215]

Scrap from municipal refuse may be in the form of source-separated steel cans, a mixed ferrous fraction, metal magnetically separated from mixed waste or incinerator ash, and C D debris. An ASTM specification (E1134-86) was developed in 1991 for source-separated steel cans. The Steel Recycling Institute has a descriptive steel can specification entitled "Steel Can Scrap Specifications". PubHshed standards for municipal ferrous scrap also include ASTM E701-80, which defines chemical and physical test methods, and ASTM E702-85 which covers the chemical and physical requirements of ferrous scrap for several scrap-consurning industries. [Pg.556]

Lime is among a family of chemicals which are alkaline in nature and contain principally calcium, oxygen and, in some cases, magnesium. In this grouping are included quicklime, dolomitic lime, hydrated lime, dolomitic hydrated lime, limestone, and dolomite. The most commonly used additives are quicklime and hydrated lime, but the dolomitic counterparts of these chemicals (i.e., the high-magnesium forms) are also widely used in wastewater treatment and are generally similar in physical requirements. [Pg.101]

For an electronic wavefunction, antisymmetry is a physical requirement following from the fact that electrons are fermions. It is essentially a requirement that y agree with the results of experimental physics. More specifically, this requirement means that any valid wavefunction must satisfy the following condition ... [Pg.258]

An effective photoantioxidant must satisfy not only the basic chemical and physical requirements mentioned... [Pg.112]

No overlap. Data trace update rate is the same as the block processing rate. This rate is governed by the physical requirements that are internally driven by the frequency range of the requested data. [Pg.717]

The operating envelope defines the physical requirements, dimensions, and type of coupling needed in a specific application. The envelope information should include shaft sizes, orientation of shafts, required horsepower, full-range of operating torque, speed ramp rates, and any other data that would directly or indirectly affect the coupling. [Pg.996]

The process of compiling the budgets will start with the preparation of estimates of the physical requirements of the plan, be they manpower, materials, tons of fuel, cubic meters or therms of gas, units of electricity or cubic meters of water. These estimates will be prepared in relation to the estimates of output by manufacturing or process departments, which, in turn, will have been based on the quantities, or other measures forecast in the sales budgets. [Pg.1031]

The lattice-type shelf is functionally as good as the others, but it may not look appropriate for a book shelf in the context of a library. A second consideration is a combination of physical requirements and appearance. A simple plastic beam that will function adequately in terms of strength and stiffness may be rather thin. A shelf of this type can look flimsy even if it is functional. This impression is useful to the designer since the solid plate is probably an uneconomical use of material. A requirement was added that the design should look like a wood shelf since this is the context in which it is to be used. To produce the desired thickness appearance either a lipped pan with internal reinforcement can be used or, alternatively, a sandwich-type structure with two skins and a separator core. In either case the displacement of the material from the plane of bending will improve the stiffness efficiency of the product. The appropriate procedure is to... [Pg.205]

Next, let us check whether the theory as formulated above satisfies certain reasonable physical requirements. One of these is dearly the steadiness of the vacuum and one-particle states. The steadiness of the vacuum would correspond to the statement that out<0 0>jn = 1. Let us, therefore, compute this quantity explidtly ... [Pg.657]

The US Dept of Defense Spec for Sr nitrate is M1L-S-20322B (19 Apr 1973). Two grades are specified, Grade A for use in pyrotechnic compns, such as flares, and Grade B, for use in tracer compns. The chemical and physical requirements are given below ... [Pg.222]

Physical requirements state that the material be in the form of crysts or fragments, and that its color be white or colorless Refs 1) Merck (1968), 1129-L 2) Kirk ... [Pg.223]

Physical requirements state that the material be a crystalline powder, and that it be white in color... [Pg.223]

MIL-P-211B covers two classes of material, Class 1 - fine granulation, and Class 2 — extra fine granulation. Chemical and physical requirements are detailed in Table 1 below ... [Pg.729]

Physical Requirements for the Liquid Polymer and Cured Compounded Test Sheet... [Pg.828]

Phillips of the BHR Group, UK, provides a compact definition of process intensification, saying it is ... a design philosophy whereby the fluid dynamics in a process are matched to its chemical, biological and/or physical requirements,. .. [27]. In this way, significant benefits are gained, those listed above. [Pg.12]

A suitable phase change temperature and a large melting enthalpy are the requirements that have always to be met by a PCM. However, there are more requirements that have to be met for most, but not all applications. These are Physical requirements ... [Pg.260]

The atomic properties satisfy the necessary physical requirement of paralleling the transferability of their charge distributions - atoms that look the same in two molecules contribute identical amounts to all properties in both molecules, including field-induced properties. Thus the atoms of theory recover the experimentally measurable contributions to the volume, heats of formation, electric polarizability, and magnetic susceptibility in those cases where the group contributions are found to be transferable, as well as additive additive [4], The additivity of the atomic properties coupled with the observation that their transferability parallels the transferability of the atom s physical form are unique to QTAIM and are essential for a theory of atoms in molecules that purports to explain the observations of experimental chemistry. [Pg.207]

In Chapter 6, this is shown to be a general physical requirement for all micromixing models, resulting from the fact that molecular diffusion in a closed system conserves mass. ( a)) is the mean concentration with respect to all fluid elements with age a. Thus, it is a conditional expected value. [Pg.32]

The oxidation-drying printing inks have to meet high chemical and physical requirements. Besides resistance to various solvents, detergents and wash liquors, they also need to have high lightfastness, rub resistance and crease resistance. [Pg.153]

Plants are living organisms with physical requirements that are often in conflict with the nature of the pollutant or the industrial setting to be remediated. These requirements can include soil pH, soil texmre, and available nutrients. Hybrid poplars are reasonably tolerant of organic compounds, but high concentrations of metals, salts, and ammonia are toxic. Phytoremediation is also a slower process than alternative technologies, and cleanup often requires several growing seasons. [Pg.454]

Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...