A quantitative approach

The mean composition value, y, usually has an economic significance in that it is used to control the overall content of the key or expensive component. 

The square of the standard deviation is the variance, 5. This is widely used to typify particulate mixture quality because of its additive properties. 

---

A Quantitative Approach to Biochemical Structure-Activity Relationships. Accounts of nical Research 2 232-239. 

Unproven Technology. When a project involves new or unproven technology, the capital estimates tend to understate the development, constmction, and start-up costs. A quantitative approach to account for the capital cost and performance shortfalls associated with unproven technology has been reported (14), but the data are meager. 

As already mentioned molecules cohere because of the presence of one or more of four types of forces, namely dispersion, dipole, induction and hydrogen bonding forces. In the case of aliphatic hydrocarbons the dispersion forces predominate. Many polymers and solvents, however, are said to be polar because they contain dipoles and these can enhance the total intermolecular attraction. It is generally considered that for solubility in such cases both the solubility parameter and the degree of polarity should match. This latter quality is usually expressed in terms of partial polarity which expresses the fraction of total forces due to the dipole bonds. Some figures for partial polarities of solvents are given in Table 5.5 but there is a serious lack of quantitative data on polymer partial polarities. At the present time a comparison of polarities has to be made on a commonsense rather than a quantitative approach. 

Abhitt, J. F., 1969 A Quantitative Approach to the Evaluation of the Safety Function of Operators in Nuclear Reactors, Atomic Health and Safety Board, UK. AHSB(s) R 160. 

T. A. Kletz, Hard Analysis—A Quantitative Approach to Safety, Symposium Series No. 34, Institution of Chemical Engineers, 1971, p. 75. 

How can the hypothesis be tested experimentally There are at least two possibilities, a qualitative and a quantitative approach. 

A Quantitative Approach Dissolved O i gen Depletion. The classical primary indicator of the health of a river, especially one receiving oxidizable domestic... 

In our view, such students difficulties as described above originate, mainly, from a failure to recognise and teach chemical eqniUbrinm as a process. These problems are the outcome of a quantitative approach being taken to the theme to the detriment of understanding chemical eqnilibrinm qnalitatively. As a conseqnence, students have difficulty understanding these and other issnes in terms of Le Chatelier s Principle, which demands knowledge abont how the processes occnr. 

Laznicka, P. (1983) Giant ore deposits. A quantitative approach. Global Tect. Metall., 2, 41-63. 

P. R. Darrah, The rhizosphere and plant nutrition a quantitative approach. Plant Soil 755 1 (1993). 

Hansch, C., A quantitative approach to biochemical structure-activity relationships, Acc. Chem. Res. 2, 232-239 (1969). 

P Macheras, MY SymiUides. Toward a quantitative approach for the prediction of the fraction of dose absorbed using the absorption potential concept. Biopharm Drug Dispos 10 43-53, 1989. 

Nordhaus [20] hypothesizes the institution of an harmonized carbon tax (HCM), essentially equivalent to a "dynamic Pigouvianpollution tax for a global public good" and points out 10 different reasons to prefer it to a quantitative approach. 

Boresch, S. Tettinger, F. Karplus, M., Absolute binding free energies a quantitative approach to their calculation, J. Phys. Chem. B 2003,107, 9535-9551. 

Zak JC, Willig MR, Moorhead DI, Wildman HG (1994) Functional diversity of microbial communities a quantitative approach. Soil Biol Biochem 26 1101-1108... 

Meanwhile, a quantitative approach to assessing pollution effects on ecosystems has already been developed. A Critical Load and Level (CLL) concept has been used for defining emission reduction strategies under the UNECE Convention on... 

Macheras PE and Symillides MY (1989) Toward a Quantitative Approach for the Prediction of the Fraction of Dose Absorbed Using the Absorption Potential Concept. Biopharm Drug Dispos 10 pp 43-54. 

The rapid accrual of biomedical information has led to considerable interest both in the notion of evidence-based medicine and also in the history of the use of quantitative evidence in medicine. Trohler has shown that the origins of a quantitative approach to medicine can be traced back to the eighteenth century in Britain and was a movement begun by physicians who believed that there was a need to move to an empirical approach to medicine and away from the systemic-pathophysiological approach of antiquity. 

A quantitative approach to placing a confidence on classification is to calculate the proportion of the K nearest neighbors that are members of the respective classes. In the terminology used in this book, this is an attempt to validate... 

The triple bond structure appears in the third place with spherical AOs and standard tableaux functions, but is not among the first four with HLSP ffinctions. This is actually misleading due to the arbitrary cutoff at four ffinctions in the table. The HLSP function triple bond has a coefficient of 0.09182, only slightly smaller that function 4 in the table. The appearance of the triple bond structure in this wave function is the quantum mechanical manifestation of the V back-bonding phenomenon invoked in qualitative arguments concerning bonding. We thereby have a quantitative approach to the concept. 

Transfers of energy and material to, from, and through bodies of fluids occur with great frequency in a wide variety of engineering processes. The fact that turbulence in the fluid affects such transfers has long been known, but the complexity of the phenomenon is such as to make a quantitative approach difficult. However, the importance of these transport processes and the marked influence of turbulence upon them make a quantitative study of turbulence an important step in the development of engineering as a science. 

A quantitative approach is important in any branch of engineering. However, this does not necessarily mean that engineers can solve everything theoretically, and quite often they use empirical rather than theoretical equations. Any equation - whether theoretical or empirical - that expresses some quantitative relationship must be dimensionally sound, as stated below. 

Timesavings associated with microwave-assisted synthesis a quantitative approach... 

Here we present a different prescription to calculate the dynamic structure factor or the intermediate scattering function in the supercooled regime. This is a quantitative approach based on the basic result of the mode coupling theory. The effect of the mode coupling term in the intermediate scattering function is written in a simpler way by the following expression ... 

---