Main sections

This process includes two main sections the burner section with a reaction chamber that does not have a catalyst, and a Claus reactor section. In the burner section, part of the feed containing hydrogen sulfide and some hydrocarbons is burned with a limited amount of air. The two main reactions that occur in this section are the complete oxidation of part of the hydrogen sulfide (feed) to sulfur dioxide and water and the partial oxidation of another part of the hydrogen sulfide to sulfur. The two reactions are exothermic ... 

The infrared region of the electromagnetic spectrum may be divided into three main sections 34... 

The general plan of each volume includes the following main sections ... 

As formerly mentioned, the whole Dryex system can be sized over a wide range of production capacities since it is constituted by two main sections, each one characterized by high flexibility, the specific size of the drying/concentra-tion section can be decided with respect to the production rate of the first section as well as to the specific production route and need of the surfactant makers. By taking these factors into account, the drying/concentration equipment can be easily and conveniently coupled with already existing and running sul-fonation/sulfation plants to increase their industrial potential. 

Detailed regulations supporting the Acts are published principally in Title 21 of the Code of Federal Regulations (21 CFR). An outline of the main sections of the Title is shown in Table 1.6. Regulations in support of veterinary biologies are contained in Title 9 of the Code of Federal Regulations, Parts 101-123 (see Table 1.7). 

Each chapter in Part 2 consists of two main sections. The first section of each chapter (except Chapter 19) deals with mechanism and reactivity. For each reaction type the various mechanisms are discussed in turn, with particular attention given to the evidence for each mechanism and to the factors that cause one mechanism rather than another to prevail in a given reaction. Following this, each chapter contains a section on reactivity, including, where pertinent, a consideration of orientation and the factors affecting it. 

The primary literature has grown so much in recent years that attempts have been made to reduce the volume. One such attempt is the Journal of Chemical Research, begun in 1977. The main section of this journal, called the Synopses , publishes synopses, which are essentially long abstracts, with references. The full texts of most of the papers are published only in microfiche and miniprint versions. For some years, the American Chemical Society journals, including J. Am. Chem. Soc. and J. Org. Chem., have provided supplementary material for some of their papers. This material is available from the Microforms and Back Issues Office at the ACS Washington office, either on microfiche or as a photocopy. These practices have not yet succeeded in substantially reducing the total volume of the world s primary chemical literature. 

This article reviews progress in the field of atomistic simulation of liquid crystal systems. The first part of the article provides an introduction to molecular force fields and the main simulation methods commonly used for liquid crystal systems molecular mechanics, Monte Carlo and molecular dynamics. The usefulness of these three techniques is highlighted and some of the problems associated with the use of these methods for modelling liquid crystals are discussed. The main section of the article reviews some of the recent science that has arisen out of the use of these modelling techniques. The importance of the nematic mean field and its influence on molecular structure is discussed. The preferred ordering of liquid crystal molecules at surfaces is examined, along with the results from simulation studies of bilayers and bulk liquid crystal phases. The article also discusses some of the limitations of current work and points to likely developments over the next few years. 

This chapter consists of four main sections. The first provides an overall description of the process of contemporary protein structure determination by X-ray crystallography and summarizes the current computational requirements. This is followed by a summary and examples of the use of structure-based methods in drug discovery. The third section reviews the key developments in computer hardware and computational methods that have supported the development and application of X-ray crystallography over the past forty or so years. The final section outlines the areas in which improved... 

The text is divided into two introductory chapters ( Biochemistry Medicine and Water pH ) followed by six main sections. 

At the beginning of each year, the farmer should draw up a chart (Fig. 8.1), which will enable him to see how much cash he has available each month. There are two main sections - income and expenditure. The expenditure section is subdivided into two sub-sections operational... 

In this chapter, we focus on recent and emerging technologies that either are or soon will be applied commercially. Older technologies are discussed to provide historic perspective. Brief discussions of potential future technologies are provided to indicate current development directions. The chapter substantially extends an earlier publication (Davis et al., 1996a) and is divided into seven main sections beyond the introduction Data Analysis, Input Analysis, Input-Output Analysis, Data Interpretation, Symbolic-Symbolic Interpretation, Managing Scale and Scope of Large-Scale Process Operations, and Comprehensive Examples. 

The electrolyzer and the decomposer are the two main sections of a typical mercury cell. The electrolyzer is slightly inclined steel trough through which a thin layer of mercury flows over the... 

This chapter, which identifies the existing trends in EM research for the manufacturing sector and develops new EM regimes that are important for continued advances in energy rationalisation, is divided into three main sections ... 

Section 3, the main section of this paper, deals with the NMR of bulk semiconductors. Section 3.1 lists the various relevant terms in the NMR spin Hamiltonian. The NMR techniques and strategies that can be employed to obtain the individual NMR parameters of the spin Hamiltonian and theoretical calculations of NMR parameters will be discussed in Sect. 3.2. The remaining subsections will provide examples from the important classes of semiconductors that illustrate the measurement and interpretation of each of the spin Hamiltonian parameters, with an emphasis on what information about semiconductors the parameters convey. 

Planktonic chlorophyll increased from the upper reaches of the main section to the meandering zone of the Ebro Depression, and sharply decreased after the large reservoirs located in the lower reaches. On the basis of the chlorophyll concentration, the river Ebro can be defined as eutrophic [15]. Plankton chlorophyll levels ranged between 10 and 17 pg/L from the headwaters to the city of Zaragoza, and then increased up to 60 pg/L in the meander plain (Fig. 2a). Suspended chlorophyll in the Ebro ranged between 10 and 30 pg/L in most of the sites... 

These few remarks highlight that quantum-chemical methods have adapted an important role in medicinal chemistry. It is the intention of the present volume to document this role in adequate detail. Accordingly, the book is divided into three main sections. The first section is dedicated to density functional theory. 

A fluidized-bed reactor consists of three main sections (Figure 23.1) (1) the fluidizing gas entry or distributor section at the bottom, essentially a perforated metal plate that allows entry of the gas through a number of holes (2) the fluidized-bed itself, which, unless the operation is adiabatic, includes heat transfer surface to control T (3) the freeboard section above the bed, essentially empty space to allow disengagement of entrained solid particles from the rising exit gas stream this section may be provided internally (at the top) or externally with cyclones to aid in the gas-solid separation. A reactor model, as discussed here, is concerned primarily with the bed itself, in order to determine, for example, the required holdup of solid particles for a specified rate of production. The solid may be a catalyst or a reactant, but we assume the former for the purpose of the development. 

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