Effective unit

UNSCEAR, Ionizing Radiation Sources and Biological Effects. United Nations, New York, NY (1982). 

CCTTE. 1988. Computerized Listing of Chemicals Being Tested for Toxic Effects. United Nations Environment Programme, International Programme on Chemical Safety, International Register of Potentially Toxic Chemicals, Geneva, Switzerland. 

Effect (units), Organism, PAH Compound Concentration Reference9... 

As a result, the limited ability of unit processes to create a viable niche for themselves within chemical engineering must ultimately be understood in terms which also involve unit operations. Although the historical resilience of unit processes turned out to be less than that of unit operations, it was no different in its essential elements. Studying the uneasy and ultimately unsuccessful career of unit processes can therefore be easily justified as a way to shed light on the far more successful career of unit operations. In particular, the career of unit processes raises a hypothesis about the evolution of unit operations. The staying power of unit operations was not so much because of the structural coherence of its conceptual elements as its essential links with social and, more specifically, professional groups. As a theoretical entity, unit operations appears far less stable and, in fact, appears quickly threatened by notions which rest on fewer and more fundamental scientific concepts. Ultimately, this threat came to be realized with the advent of transport phenomena, but this is another story. In effect, unit processes can be interpreted as both the attempt to extend the reach of unit operations and a symptom of their conceptual fragility. 

These three calculated areas are approximately equal, so that the temperature differences assumed may be taken as nearly correct. In practice, A T would have to be a little larger since A1 is the smallest area. It may be noted that, on the basis of these calculations, the economy is given by e = (3.2/1.635) = 2 ). Thus, a triple effect unit working under these conditions gives a reduction... 

Reavell(17) has given a comparison of costs for the concentration of a feed of a heat-sensitive protein liquor at 1.70 kg/s from 10 per cent to 50 per cent solids, on the basis of a 288 ks (160 hour) week. These data are shown in Table 14.3. It may be noted that, when using the double-effect evaporation with vapour compression, a lower temperature can be used in the first effect than when a triple-effect unit is used. In determining these figures no account has been taken of depreciation, although if this is 15 per cent of the capital costs it does not make a significant difference to the comparison. 

One important component of any evaporator installation is the equipment for condensing the vapour leaving the last effect of a multiple-effect unit, achieved either by direct contact with a jet of water, or in a normal tubular exchanger. If M is the mass of cooling water used per unit mass of vapour in a jet condenser, and H is the enthalpy per unit mass of vapour, then a heat balance gives ... 

WEBRE, A. L. Chem. Met. Eng. 27 (1922) 1073. Evaporation — A study of the various operating cycles in triple effect units. 

Note 3 This definition applies to the so-called primitive unit cell. In practice, the effective unit cell may consist of more than one primitive unit cell. 

An effective transition of the nation s energy base from petroleum to alternate energy sources will require relatively large capital investments. Incentives to make these investments will be influenced by our nation s capability to control its money supply and execute a desired monetary policy. The United States faces the sobering task of designing a technology development plan and implementing it. Its development and implementation will require an effective United States monetary policy. 

Here, ur/p r) describes the interaction between nonbonded units and oa is the effective unit size (Yukawa potential was used... 

Herbig, A.T., Nerve Agents and Their Psychological Effects, United States Army Review (1990). 

Environmental Protection Agency, Good Laboratory Standards for Health Effects, United States Federal Register, Vol. 54 No. 158, 34067-34074, August 17, 1989. 

A holistic view regarding the mode of action of phenolic allelochemicals recognizes the effects of these compounds as one of several stresses on plants. Complexes of the individual phenolic compounds become the effective unit causing allelopathy. In summary, explanations of the mode of action of phenolic allelochemicals must take into account that these compounds act in concert, the different compounds vary in toxicity but they have similarities in their mechanisms of action, and they all appear to disrupt cellular functions at multiple target sites. 

DNLM 1. United States. Food and Drug Administration. 2. Mental Disorders—therapy—United States. 3. Brain Damage, Chronic—etiology— United States. 4. Drug Industry—United States. 5. Electroconvulsive Therapy—adverse effects—United States. 6. Psychotropic Drugs—adverse effects—United States. WM 400 B833b 2008]... 

Faculty of Family Planning and Reproductive Health Care Clinical Effectiveness Unit (2005) FFPRHC Guidance Drug Interactions with Hormonal Contraception./ Fam Plan Health Care 31 139-150. 

UNSCEAR. 1982. United Nations Scientific Committee on the Effects of Atomic Radiation. Ionizing radiation Sources and biological effects. United Nations Document E.82.IX.8, New York, NY. 

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