Present status evaluation

Sofowora, A. The present status of knowledge of the plants used in traditional medicine in western Africa a medical approach and a chemical evaluation. J Ethnopharmacol 1980 2(2) 109-118. 

Molecular theories, based in large part on ideas about chain entanglements, have been constructed to explain certain of these observations. The theories must still be regarded as tentative and incomplete. They are based, first of all, on reasonable but still incompletely accepted ideas about chain organization in concentrated solutions and melts. Secondly, they deal with the response of individual chains or pairs of chains in a smoothed medium, rather than with an entire interacting ensemble. Finally, they circumvent the deep mathematical difficulties of the central problem, interaction between mutually uncrossable sequences of chain elements, by approximations which are not easy to evaluate. The purpose of this review is to summarize the present status of entanglement theories and the data upon which they are based. 

The fundamental theme for this review was the attempt to illustrate the "flavor of current research in this area. If one were to summarize (62, 146) the present status of our knowledge of these remarkable systems, it might be that most of the properties of excess electrons in solution can be interpreted in terms of models that are (qualitatively) easily understood, but quantitatively evaluated only with considerable effort. This is, indeed, an observation pertinent not only to metal solutions, but to inorganic chemistry in general ... 

The main object of this review is to look at some of the early developments of quantitative tic in terms of the fluorometric detection methods that were developed for the evaluation of pesticides. It is also intended to discuss the present status of the technique and consider its future. 

Li AP, Maurel JP, Lechon-Gomez M et al. (1997) Preclinical evaluation of drug-drug interactions present status of the application of primary human hepatocytes in the evaluation of cytochrome P450 induction. Chemico-Biological Interactions 107 5-16... 

Within the framework of this philosophy, this symposium is concerned with several topic areas pertinent to the problems associated with the identification and confirmation of pesticide residues at submicrogram levels. The purpose of this symposium is to survey the present status of the classical physical, chemical, and biochemical techniques employed for residue analysis to evaluate critically the more recently applied, relatively unexploited techniques which have become available for the detection, quantitation, and characterization of pesticide residues and finally, to examine and discuss the current needs and problems, stimulate and encourage greater research activity, and point the way to future developments in the analysis of pesticide residues. 

The aim of this paper is to describe the present status of development and application, and evaluation of PTGL processes in our country. 

Unfortunately, the present models are still on a level aiming at reasonable solutions with several model parameters tuned to known flow fields. For predictive purposes, these models are hardly able to predict unknown flow fields with reasonable degree of accuracy. It appears that the CFD evaluations of bubble columns by use of multi-dimensional multi-fluid models still have very limited inherent capabilities to fully replace the empirical based analysis (i.e., in the framework of axial dispersion models) in use today [63]. After two decades performing fluid dynamic modeling of bubble columns, it has been realized that there is a limit for how accurate one will be able to formulate closure laws adopting the Eulerian framework. In the subsequent sections a survay of the present status on bubble column modeling is given. 

The American people, Congress, and the President have growing concerns about U.S. competitiveness and this country s ability to lead the world in innovation and job creation. A recent National Research Council report, Rising Above the Gathering Storm Energizing and Employing America for a Brighter Economic Future, evaluated the present status of U.S. competitiveness and made specific recommendations for improvements. 

The objectives of this presentation are to define the problems with which we are faced, to evaluate the present status of our ability to detect and identify... 

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