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Understanding Basic Processes

Graphs are used in mathematics to describe a variety of problems and situations [.37. The methods of graph theoi y analyze graphs and the problems modeled by them, The transfer of models and abstractions from other sciences (computer science, chemistry, physics, economics, sociology, etc.) to graph theory makes it possible to process them mathematically because of the easily understandable basics of graph theory. [Pg.32]

Basic Principles Since refrigeratiou is the practical apphcatiou of the thermodynamics, comprehending the basic principles of thermodynamics is crucial for full understanding of refrigeratiou. Section 4 includes a through approach to the theoiy of thermodynamics. Since our goal is to understand refrigeratiou processes, cycles are of the crucial interest. [Pg.1106]

At this point, it is important to stress the difference between separation and resolution. Although a pair of solutes may be separated they will only be resolved if the peaks are kept sufficiently narrow so that, having been moved apart (that is, separated), they are eluted discretely. Practically, this means that firstly there must be sufficient stationary phase in the column to move the peaks apart, and secondly, the column must be constructed so that the individual bands do not spread (disperse) to a greater extent than the phase system has separated them. It follows that the factors that determine peak dispersion must be identified and this requires an introduction to the Rate Theory. The Rate Theory will not be considered in detail as this subject has been treated extensively elsewhere (1), but the basic processes of band dispersion will be examined in order to understand... [Pg.93]

The need to understand the processes operating on Earth, coupled to recent analytical advances, have ensured that the U-series nuclides have seen widespread application since the last Ivanovich and Harmon book (1992). This volume does not set out to repeat material in that book, but is an attempt to bring together the advances in the subject over the last ten years, highlighting the excitement and rapid expansion of U-series research. The scope of the various chapters in this book is laid out at the end of this introduction. The remainder of this chapter introduces some of the basic concepts of U-series geochemistry, the chemical behavior of the elements involved, and the half-lives of the U- and Th-series nuclides. This chapter is not intended to be an exhaustive summary of the nuclear or radio-chemistry of the U-series nuclides and for additional information, the reader is referred to Ivanovich (1992). [Pg.4]

The purpose of chemical processes is to make money. An understanding of process economics is therefore critical in process design. Process economics has three basic roles in process design ... [Pg.17]

In this article, we first discuss basic dating principles and then studies based on isotopes produced by cosmic radiation in extraterrestrial matter and in the earth s atmosphere. The discussions are intended to illustrate how analytical physical and chemical studies contribute to the understanding of processes in the environmental system and their history. [Pg.15]

The organization of information is a necessary and critical function, but it is also an intrinsically appealing and satisfying enterprise that is required to master our environs. The world is overwhelmingly complex. At a mundane level, obtaining understanding of these complexities is an automatic, essential, and basic process that is necessary for survival. As a scientific enterprise, attempting to determine order in the universe rests at the core of all endeavors. [Pg.4]

Before proceeding to the main subject of CC, it is necessary for the reader to gain some understanding for the basic process of "correlation. Correlation is a mathematical procedure for measuring the similarity of two different signals or the spectral characteristics of one signal. [Pg.83]

The key to understanding such processes lies in our ability to dissect the catalytic event into its separate components. Numerous ingenious experiments have been performed by workers in the field of catalysis for many years, and it is not the intent of this article to review these contributions. It is important to note that such studies have advanced the field of catalysis to a refined science and that a number of general observations have been developed which serve as guidelines for the development and improvement of catalytic materials. Insofar as surface science and the study of reactions on macroscopic single crystal surfaces is related to catalysis, its purpose should therefore be to contribute a more exact and, thereby, a more general understanding of the basic phenomena involved. [Pg.2]

The basic principle of toxicology, as first noted by the Swiss physician Paracelsus, is that the dose makes the poison. While this principle is easy to understand, the processes used to understand the relationships between dose and biological response, and ultimately to determine what dose of a chemical poses a reasonable certainty of no harm , are much more complicated. [Pg.265]

Nevertheless, despite many advances in understanding the basic processes eontrolling the separation of organic solutes using reverse micelles, and in the design and operation of eontactors, the use of reverse micelles has still not been sealed up to an industrial-sized unit. [Pg.669]

ILs can also serve as tools for the MS itself. The introduchon of the ILMs for MALDI MS has opened the way to a number of new applicahons for this method. A number of theoretical studies are necessary in order to fully understand the properties of the ILMs [36]. The basic processes of IL-MALDI are still only partially understood. Therefore, basic work remains to be done to explain theoretical aspects. The wide field of already indicated and other shll unknown applications of the ILM seems to legitimate these efforts. Up to now, no consistent relationships have been found between the composition of an ILM and its ability to serve as a good matrix—a situahon which is comparable to all other substances used as matrices. A deeper understanding of the theoretical background of the ILM is the prerequisite for a possible tailor-made creation of new matrices in the future. [Pg.392]

The main purpose of this paper is to discuss similar problems which are generalizations of Eq. (2), in order to obtain an understanding of some of the general features of line shapes under various conditions these conditions are characterized by the relative magnitudes of a few physical parameters relevant for the basic process. [Pg.103]

Ternary and Other Induced Spectra. Three-particle induced dipoles and the associated ternary collision-induced absorption spectra and dipole autocorrelation functions have been studied for fluids composed of mixtures of rare gases, and for neat fluids of nonpolar molecules — that is for systems that are widely thought to interact with radiation only by virtue of interaction-induced properties. A convenient framework is thus obtained for understanding the variety of experimental observations. The computer simulation studies permit an insight into the involved basic processes, but were not intended for direct comparison with measurements [57]. Methods have been developed for computer... [Pg.387]

Highly successful turbojet combustors have been developed through the use of both fundamental principles and cut and try empiricism. The latter approach is costly and time consuming, and it is likely that better combustors could be developed more easily if the exact contribution of each of the several basic processes influencing combustion were known. Therefore, there is a need for a better understanding of these processes and for correlations of this understanding with performance. [Pg.273]


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