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During the last 160 years, many trivial names have been used for pyrimidine and its derivatives. Some, like uracil, persist but others have now fallen out of use, save for the occasional biochemical or biological paper. Table 1 embraces most such names WHO non-proprietary drug names, trade or proprietary names, and names of some natural products discussed in this chapter are not included because they are readily available elsewhere (B-76MI21303). [Pg.155]

Symbols which are used only in one single section of a chapter are not included in this Glossary. The number at the end of each line indicates the chapter in which the symbol is introduced... [Pg.939]

The U.S. Environmental Protection Agency (EPA) maintains the Toxic Chemical Release Inventory. This database summarizes estimated chemical releases from industrial sources to air, water, land, and the subsurface by deep-well injection in the United States. Not all industrial sources are required to provide release data to the EPA, and nine of the solvents discussed in this chapter are not included in the database. The information provided, however, indicated that about 99,364,390 kg of solvents were released into the environment in 2011, and that the major solvents were hexane, methanol, and toluene (Table 16.1.2). On a weight basis, methanol accounted for more than half of the releases. With the exeeption of nitrobenzene and pyridine, the major on-site releases were made to the atmosphere. For... [Pg.361]

The definition above is a particularly restrictive description of a nanocrystal, and necessarily limits die focus of diis brief review to studies of nanocrystals which are of relevance to chemical physics. Many nanoparticles, particularly oxides, prepared dirough die sol-gel niediod are not included in diis discussion as dieir internal stmcture is amorjihous and hydrated. Neverdieless, diey are important nanoniaterials several textbooks deal widi dieir syndiesis and properties [4, 5]. The material science community has also contributed to die general area of nanocrystals however, for most of dieir applications it is not necessary to prepare fully isolated nanocrystals widi well defined surface chemistry. A good discussion of die goals and progress can be found in references [6, 7, 8 and 9]. Finally, diere is a rich history in gas-phase chemical physics of die study of clusters and size-dependent evaluations of dieir behaviour. This topic is not addressed here, but covered instead in chapter C1.1, Clusters and nanoscale stmctures, in diis same volume. [Pg.2899]

Relativistic effects should always be included in these calculations. Particularly common is the use of core potentials. If core potentials are not included, then another form of relativistic calculation must be used. Relativistic effects are discussed in more detail in Chapter 33. [Pg.289]

Chapters 4, 5 and 6 list a large number of individual compounds, with a brief statement of how each one may be purified. For substances that are not included in these chapters the following procedures may prove helpful. [Pg.60]

Although progress in continuum and computer modeling of dynamic fracture and fragmentation is encouraging, it is apparent that further advancements are needed. Many of the emerging physical and statistical concepts, some of which have been discussed in the present chapter, are not yet included in these... [Pg.317]

In using the tables, it would be best to survey the list of tables included in each chapter to determine how many categories might possibly contain the compound of interest. It should be noted that a large number of cyclophanes which contain fewer than three heteroatoms are not included in this book since they are not generally useful as cation binders. [Pg.426]

Obviously, the foregoing description of problems in the mechanics of composite materials is incomplete. Some topics do not fit well within the logical framework just described. Other topics are too advanced for an introductory book, even at the graduate level. Thus, the rest of this chapter is devoted to a brief discussion of some basic lamina and laminate analysis and behavior characteristics that are not included in preceding chapters. [Pg.332]

The identification of the operational level deficiencies that contribute to increased error rates can be achieved by evaluations of PIFs as described in Chapter 3. Although the factors described in that chapter are not exhaustive in their coverage, they can provide a useful starting point for an evaluation exercise. Structured PIF evaluation systems are described in Chapter 2 which ensure that all the important factors that need to be evaluated are included in the exercise. [Pg.21]

Tliis chapter covers nitrogen-containing fulvalenes that can be obtained by replacement of CH=CH and/or CH, for example, types 1-3 starting from compounds 1-6. Compounds in which nitrogen atoms are arranged on the periphery of the cross-conjugated system as in 15 or 16, as well as derivatives in which the central double bond contains heteroatoms as in 17, are not included. For azoniafulvalenes of type 17 and related heterocyclic betaines see (94AFIC197). [Pg.117]

Tlie present chapter reviews the chemistry of three- and four-membered ring compounds containing an S—S bond in their ring. Dithiiranes 1,2-dithietanes and 1,2-dithietes are the compounds of this type. Although 1,3-dithietanes are four-membered heterocycles which are prepared much more easily and are seemingly more familiar, they have no S-S bond in the ring and hence are not included in this chapter. [Pg.220]

In addition, Chapter 6 has three additional tear agents, mixtures that are not included in the other book on chemical warfare. [Pg.229]

The molecular mechanics method is usually limited to the determination of molecular geometry and thermodynamic quantities. However, it is sometimes employed to estimate vibrational frequencies - at least in those cases in which 7r electrons are not involved in the determination of the molecular geometry. It should be emphasized that this method, as well as those presented in Chapter 12, are applicable only to isolated molecules, as intermolecular forces are not included in the model. [Pg.336]

In Section 2.2.8, possible failures during the freeze drying process are classified in four categories, and the preventions and necessary actions briefly discussed. In this chapter, some unexpected or undesirable events are studied which, by experience may happen. The problems listed here are selected from the course of the freeze drying process. A breakdown of single components, for example pumps, compressors or valves are not included in this chapter. The list will be incomplete, but an attempt has been made to mention some of the more frequent events. The problems with leaks and their hunting is discussed in Section 2.2.8. [Pg.253]

This chapter will not include all relevant methods. What are considered key representative examples will be focused on. [Pg.171]

This chapter lists pigments which, either for reasons of different chemical structure or for lack of knowledge thereof, are not included in any other chapter of this book. [Pg.567]

This chapter presents an overview of various details applicable to blast resistant structures. Many details for conventional steel and concrete structures, and specific details for seismic design, are applicable to these structures and are not included. Details should meet the requirements of design capacity, energy absorption, and ductility. [Pg.195]

In general, the rearrangements of dienes and polyenes can be both thermal and photochemical reactions (the latters are not included in this chapter), and can be catalyzed by acids, bases, metal complexes and enzymes. They can be degenerate processes or occur with the introduction or elimination of functional groups, be accompanied by shifts of multiple bonds or by migrations of atoms or groups and they may lead to cyclizations. [Pg.740]

The very volatile gases (compounds with four or fewer carbons), crude oil, and the sohd asphaltic materials are not included in this discussion of analytical methods but are included elsewhere (Chapters 7 and 9). [Pg.210]

There is also a significant occurrence of nonprotein D-amino acids in nature.These amino acids have attractive structural variations and remarkable biological properties. However, this chapter will not include details on nonprotein D-amino acids. Selenium-containing amino acids, such as selenocysteine and selenomethionine, are also considered as unusual amino acids. Recently, much interest in selenium-containing amino acids has emerged. More information about selenium-containing amino acids is available in Chapter 5.05. [Pg.6]

This chapter is largely limited to reactions of hydrocarbons and related compounds. Reactions in which the metal is involved merely as a reducing agent are not included. The alkali-metal-catalyzed reactions leading to the formation of high polymers are not discussed because they have been treated elsewhere (1). [Pg.118]

There may be additional drug products that have obtained a second 30-month stay that are not included within this study because the first ANDA with a paragraph IV certification was filed after January 1, 2001. See Chapter 1 for the scope of the study. [Pg.64]

These final steps are not included in excerpt 4G, but if you are interested, the full article is included at the end of chapter 2.) The text describes these efforts, following the order of the entries in Table f. First, different solvents were tried beginning with methanol (entry f). Next, various alcohol mixtures were tried, but yields dropped (entries 2—4). The yield improved slightly when water was mixed with methanol (entry 5) hence, water alone was tried at different temperatures (entries 6—9). This truly is a story of scientific discovery The readers learn both what did not work and what did. This approach is quite common in papers describing organic synthesis. [Pg.144]

This chapter covers literature published since 1982 early materials are included here only where needed as a basis for describing further developments or where not previously mentioned in CHEC-1 <84CHEC-l(5)669>. The structural types surveyed here include 1,2,3-triazoles, benzotriazoles, their dihydro derivatives and carbocyclic fused compounds. Compounds with heterocyclic fused rings are not included. The nomenclature system was discussed in CHEC-T <84CHEC-I(5)670>. [Pg.3]

It is important to point out that when a compound is pharmacologically promiscuous in a panel of 50 diverse targets, it is highly likely that the compound also hits several additional targets which are not included in the panel, thereby further increasing the liability risk. The reasons why certain compounds are more promiscuous than others and how promiscuity can be avoided is discussed in Chapter 13. [Pg.290]


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