Article Constitution

Following this they were weighted by the frequency with which they were mentioned in the secondary source articles constituting the fact book for that particular firm, and ranked in order to clarify which issues were the most important. The ranking of issues determines the relative importance of various causes of firm performance, and was accomplished in both time-periods 1 and 2 of the study. 

The contribution of Cyvin, Cyvin and Brunvoll on the enumeration of benzenoid chemical isomers is the continuation of a series that began with two articles in Volume 162 of this journal. These three articles constitute a definitive and exhaustive treatment of the given topic. 

Packaging constitutes another significant use and is often a foam-ia-place operation to protect iadustrial equipmeat such as pumps or motors. Furniture articles molded from rigid foam are used in the form of decorative drawer fronts, clock cases, and simulated wooden beams. Flotation for barge repair and sport boats as well as insulation for portable coolers are a few other uses. 

This article has been reviewed by the Office of Pollution Prevention and Toxics (U.S. EPA) and approved for pubHcation. Approval does not signify that the contents necessarily reflect the views and poHcies of the Agency, nor does mention of commercial products constitute endorsement or recommendation for use. 

Applications. Epoxy resias constitute over 90% of the matrix resia material used ia advanced composites. In addition, epoxy resias are used ia all the various fabrication processes that convert resias and reinforcements iato composite articles. Liquid resias ia combiaation, mainly, with amines and anhydride are used for filament winding, resia transfer mol ding, and pultmsion. Parts for aircraft, rocket cases, pipes, rods, tennis rackets, ski poles, golf club shafts, and fishing poles are made by one of these processes with an epoxy resia system. 

There is Httle correlation between classifications according to chemical type and appHcation properties. AppHcation classifications are of most practical usefulness to the dyer, and therefore the chemical constitutions of dyes are described here only briefly. Further detailed information on dye types (10) and their chemical manufacture (11) can be found elsewhere, and ia many other Eniyclopedia articles to which references are made. 

Lead that is incorporated into a lead acid battery is processed to manufacture the battery, and therefore must be counted toward threshold and release determinations. However, the use of the lead acid battery elsewhere in the facility does not have to be counted. Disposal of the battery after its use does not constitute a "release" thus, the battery remains an article. 

Equipment that has been approved for a Division 1 location shall be permitted in a Division 2 location of the same class or group. Where specifically permitted in Articles 501 through 503, general-purpose equipment or equipment in general-purpose enclosures shall be permitted to be installed in Division 2 locations if the equipment does not constitute a source of ignition under normal operating conditions. 

Anyone who installs or erects any article for use at work must ensure that, so far as reasonably practicable, it does not constitute a risk to health and is safe for use. 

X-Ray diffraction analysis of oriented polysaccharide fibers has had a long history. Marchessault and Sarko discussed this topic in Volume 22 of Advances, and a series of articles by Sundararajan and Marchessault in Volumes 33, 35, 36, and 40 surveyed ongoing developments. The comprehensive account presented here by Chandrasekaran (West Lafayette, Indiana) deals with some 50 polysaccharides, constituting a wide range of structural types, where accurate data and reliable interpretations are available. The regular helical structures of the polysaccharide chains, and associated cations and ordered water molecules, are presented in each instance as stereo drawings and discussed in relation to observed functional properties of the polymers. 

The use of trade, firm, or corporation names in this article is for the information and convenience of the reader. Such use does not constitute an official endorsement or... 

Some of the polysaccharides constituting intermediate stages in the biosynthesis of heparin have been physically isolated.23 Their structure is strikingly similar to those of heparan sulfates,24 thus re-opening the often-raised question as to whether heparan sulfate indeed represents products of incomplete biosynthesis of heparin. A detailed account of the structure and biological properties of heparan sulfate is beyond the scope of this article. However, in view of similarities of structural fea-... 

Current interest in the electrochemical behavior of organic compounds is attested to by a number of recent books and reviews devoted to various aspects of the subject. The recent article in this series by Eberson and Schafer constitutes a good general introduction to the state of the art in synthetic and mechanistic organic electrochemistry, and also contains, in Chapter 1, many useful references for the interested reader who wishes to delve deeper into the extensive literature of organic electrochemistry. 

The photoadsorption effect as such does not constitute the subject matter of the present article. We shall consider it very briefly, only to the extent necessary to allow one to draw analogies between the mechanisms of the photoadsorptive and photocatalytic effects. The photoadsorptive effect has been studied sufficiently well. A brief summary of the experimental data will be given below. The mechanism of the phenomenon has been thoroughly discussed in a number of theoretical works from the standpoint of the electronic theory of chemisorption and catalysis C3,4,6-8). 

In many ways, chloroaluminate molten salts are ideal solvents for the electrodeposition of transition metal-aluminum alloys because they constitute a reservoir of reducible aluminum-containing species, they are excellent solvents for many transition metal ions, and they exhibit good intrinsic ionic conductivity. In fact, the first organic salt-based chloroaluminate melt, a mixture of aluminum chloride and 1-ethylpyridinium bromide (EtPyBr), was formulated as a solvent for electroplating aluminum [55, 56] and subsequently used as a bath to electroform aluminum waveguides [57], Since these early articles, numerous reports have been published that describe the electrodeposition of aluminum from this and related chloroaluminate systems for examples, see Liao et al. [58] and articles cited therein. 

The general chemistry of branched-chain sugars has not been the subject of systematic investigation, mainly because of the scarcity of these compounds. Nevertheless, the totality of reactions employed for elucidating the unique structures of these compounds constitutes a body of valuable information which is basic for future developments. Lucid articles on the chemistry of streptose, by Lemieux and Wolfrom,1 and of apiose, by Hudson, have appeared in earlier volumes of this Series the present article will therefore not include information on these two sugars, except as regards comparison with other sugars and in reference to new developments. 

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