Need for knowledge

For typical meteorological conditions the maximum diffusivity can be expected to be in the range 0.5-5 m sec". The magnitude is considerably smaller than the equivalent values encountered under strongly unstable conditions. A limitation of the above formulation is the need for knowledge of the geostrophic wind velocity Vg. If the assumption Vg == 8m., discussed in the previous section, is employed, then Eq. (9.25) can be written in the form... 

The need for knowledge of basic physical properties as a factor in equipment selection or design requires no stressing. Beyond this, the state-of-the-art of design of many kinds of equipment and... 

This increased activity on the sea, in the sea, and under the sea focuses attention on the need for knowledge of the behavior of metals in these environments. It has been known for years that sea water will attack most of the common metals. In some service conditions, certain living organisms in the sea cause marine fouling on the exposed metal surfaces leading to corrosion or interference with functioning of the equipment. 

Dynamic processes are prominent among potential applications of lyotropic liquid crystals. It is known, for example, that emulsion stability is greatly enhanced when liquid crystal forms at the surfaces of the drops (4). However, emulsion formation is invariably a dynamic process, involving fluid flow and transport of the surfactant from one liquid to the drop surfaces and the other liquid. Since the time required to reach equilibrium in systems containing liquid crystals can sometimes be quite long—weeks or months—the need for knowledge about dynamics of the process is evident. 

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The effect and role of the Cl" in ozone depletion in the stratosphere have highlighted the need for knowledge of how it reacts with atmospheric species and pollutants. As a consequence, the H-abstraction reactions of Cf with a large variety of non-halogenated... 

In 1.1, we described the society s environmental problems and concerns, and in 1.2, we discussed the regulations that mandate actions to mitigate or solve them. In almost all environmental problems, there is a need for knowledge or predictions of the solute concentrations in space and time. This need can be viewed from two broad categories of field-based environmental problems ... 

The need for knowledge about the conservation of plastics in cultural heritage is thus becoming increasingly important. Although a very substantial body of literature exists on the chemical, technological and manufacturing aspects of plastics, the scope of such books is too broad for conservation needs. Moreover, they often go into far too much depth to be directly useful for conservation purposes. On the other hand, the books which have been published until now about plastics conservation deal only with one or two plastic materials, and thus do not provide a total overview. 

Make the need for knowledge generation clear so as to encourage, reward, and direct it toward a common goal. 

The safety and health field involves people. As a result, there is a need for knowledge of human behavior and learning. Human behavior and learning are critical to safety and health... 

For several years pharmacists in many European countries have felt the need for knowledge, information and guidelines on the practice of preparation in the pharmacy. This was clearly put forward by experts from many European countries at the EDQM symposium on European Cooperation and Synergy and at the BEAM compounding course. During this course it was agreed that the knowledge for the preparative pharmacist were contained in the Dutch book Recepteerkunde and that this book could be used as a base for a European wide textbook on preparation in pharmacies. 

Despite much work described in the literature, engineering by rational design remains difficult to carry out due to the need for knowledge of the protein structures and a deeper understanding of the properties which should be improved. 

The choice given to the production engineer or research powder technologist is thus dependent upon the level of information required. In the design of mass flow hoppers there tends to be a greater need for knowledge on yield loci, stresses and failure criteria than that possibly needed for routine powder quality control. 

The need for knowledge of molecular structure of asphaltenes is the key to developing treatments to prevent their precipitation and may help in understanding its function as a stabilizer of emulsions. 

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