Labeling importance

The label, important notice , must be added in an easily visible and clearly legible manner both on the envelope of the mailing as well as on the information itself. 

Sketch and label important features of the percent distribution diagram for carbonate species as a function of pH. 

Information sent to health professionals should be clearly labelled Important safety information and, if appropriate, Urgent. It is also useful to prepare answers to Frequently asked questions and these are often placed on relevant websites. 

We collect syimnetry operations into various syimnetry groups , and this chapter is about the definition and use of such syimnetry operations and symmetry groups. Symmetry groups are used to label molecular states and this labelling makes the states, and their possible interactions, much easier to understand. One important syimnetry group that we describe is called the molecular symmetry group and the syimnetry operations it contains are pemuitations of identical nuclei with and without the inversion of the molecule at its centre of mass. One fascinating outcome is that indeed for... 

In describing a particular surface, the first important parameter is the Miller index that corresponds to the orientation of the sample. Miller indices are used to describe directions with respect to the tluee-dimensional bulk unit cell [2]. The Miller index indicating a particular surface orientation is the one that points m the direction of the surface nonual. For example, a Ni crystal cut perpendicular to the [100] direction would be labelled Ni(lOO). 

Two of the most important functions in the application of neutron scattering are the use of deuterium labelling for the study of molecular confomiation in the bulk state and the use of deuterium solvent in polymer solutions. In the following, we will consider several different applications of die general fomuda to deuteration. 

The label liquid crystal seems to be a contradiction in tenns since a crystal cannot be liquid. However, tire tenn refers to a phase fonned between a crystal and a liquid, witli a degree of order intennediate between tire molecular disorder of a liquid and tire regular stmcture of a crystal. Wlrat we mean by order here needs to be defined carefully. The most important property of liquid crystal phases is tliat tire molecules have long-range orientational order. For tliis to be possible tire molecules must be anisotropic, whetlier tliis results from a rodlike or disclike shape. 

Operators that eommute with the Hamiltonian and with one another form a partieularly important elass beeause eaeh sueh operator permits eaeh of the energy eigenstates of the system to be labelled with a eorresponding quantum number. These operators are ealled symmetry operators. As will be seen later, they inelude angular momenta (e.g., L2,Lz, S, Sz, for atoms) and point group symmetries (e.g., planes and rotations about axes). Every operator that qualifies as a symmetry operator provides a quantum number with whieh the energy levels of the system ean be labeled. 

It is recommended that the reader become familiar with the point-group symmetry tools developed in Appendix E before proceeding with this section. In particular, it is important to know how to label atomic orbitals as well as the various hybrids that can be formed from them according to the irreducible representations of the molecule s point group and how to construct symmetry adapted combinations of atomic, hybrid, and molecular orbitals using projection operator methods. If additional material on group theory is needed. Cotton s book on this subject is very good and provides many excellent chemical applications. 

The distinction between and 1, and Mm, etc., is an important one. These labels are commonly used by those studying inner shell electron processes. 

The starting points for many conventions in spectroscopy are the paper by R. S. Mulliken in the Journal of Chemical Physics (23, 1997, 1955) and the books of G. Herzberg. Apart from straightforward recommendations of symbols for physical quantities, which are generally adhered to, there are rather more contentious recommendations. These include the labelling of cartesian axes in discussions of molecular symmetry and the numbering of vibrations in a polyatomic molecule, which are often, but not always, used. In such cases it is important that any author make it clear what convention is being used. 

Wines may be imported for reasons at either of two extremes because they are relatively inexpensive, or because they are in high demand, and thus command a higher price. Those exported from the United States tend to be the former, and those imported, the latter, based on the data shown in Table 5. There is some market, even in countries that are overproducing wine, for wines with exotic labels. This tendency illustrates another way in which wines differ from other products. Information on and cuisine from foreign countries associated with their wines serve as the vehicles for a form of a cultural exchange, besides the stricdy commercial one. 

Varietal labeling is an important quaUty factor in the United States, and indirectly elsewhere because only certain specific varieties are planted in each prestigious foreign area. U.S. law currently requires that 75% of the wine must come from the V. vinifera variety named on the label. Concord-type varieties only require 51%, owing to their intense, distinctive flavor. If more than one variety is named, the relative amounts must total 100%. 

Xandiene dyes have not exhibited health or safety properties warranting special precautions however, standard chemical labeling instmctions are required. Toxicological properties of important dyes are Hsted in Table 2 (12). 

The annual United States import of vanilla beans jumped 34% in 1991, as importers and users replenished inventories (7). Indonesia was the largest suppher, accounting for 47% of the total the lower price for Indonesian beans is responsible for the increase in shipments. Users have been replacing Bourbon beans with Indonesian types, or blending in Indonesian beans, because they may still label their product as natural and meet other EDA specifications. 

U.S. Oleoresin Imports. Reports of the USDA Hst only paprika and black pepper oleoresins by name, and label all others, eg, capsicum, celery seed, and turmeric, as "other" (Table 3). The steady increase in the value of oleoresin imports is expected to continue. 

---