Chemical branch

The reaction of C(3P) with acetylene also exhibits chemical branching, with competing exit channels ... 

Boddington, M.J., A.P. Gilman, R.C. Newhook, B.M. Braune, D.J. Hay, and V. Shantora. 1990. Canadian Environmental Protection Act. Priority Substances List Assessment Report No. 1 Polychlorinated Diben-zodioxins and Polychlorinated Dibenzofurans. 56 pp. Available from Commercial Chemicals Branch, Environment Canada, 351 St. Joseph Blvd., Ottawa, Ontario, Canada K1A OH3... 

Hydrolysis. In this stage, the complex organic matter is decomposed in simple and soluble organic molecules using water to break the chemical branches. 

Current address Chemical Branch, Research Division, Chemical Research and Development Center, Aberdeen Proving Ground, Aberdeen, MD 21010... 

Note We express our appreciation to MrN, Liszt, Analytical Chemical Branch Chief, Propellants Division, FRL, Picatinny Arsenal for reviewing the Analytical Section and to Dr R.W. Van Dolah, Research Director, Explosives Research Center, US Bureau of Mines, Pittsburgh, Pa for supplying current BurMines analytical procedures... 

Experimental rate constants, kinetic isotope effects and chemical branching ratios for the CF2CFCICH3-do, -d, -d2, and -d2 molecules have been experimentally measured and interpreted using statistical unimolecular reaction rate theory.52 The structural properties of the transition states needed for the theory have been calculated by DFT at the B3PW91 /6-31 G(d,p/) level. 

How does the initial excitation influence the final product state distributions and the chemical branching provided two different dissociation channels can be accessed ... 

During the past decade, the study of photoinitiated reactive and inelastic processes within weakly bound gaseous complexes has evolved into an active area of research in the field of chemical physics. Such specialized microscopic environments offer a number of unique opportunities which enable scientists to examine regiospecific interactions at a level of detail and precision that invites rigorous comparisons between experiment and theory. Specifically, many issues that lie at the heart of physical chemistry, such as reaction probabilities, chemical branching ratios, rates and dynamics of elementary chemical processes, curve crossings, caging, recombination, vibrational redistribution and predissociation, etc., can be studied at the state-to-state level and in real time. 

H. B. Gelboin 41 National Cancer Institute, Etiology Chief, Chemical Branch Biochemistry Biochemical mechanisms of carcinogenesis... 

Dr. Jane Stratford, Head, International Chemicals Branch Department for Environment, Pood and Rural Affairs, UK... 

The Enviro-HIRLAM is an online coupled NWP and ACT model for research and forecasting of both meteorological and chemical weather (Fig. 16.4). The integrated modelling system is developed by DMI and other collaborators (Chenevez et al. 2004 Baklanov et al. 2004, 2008a Korsholm et al. 2008a, Korsholm 2009) and included by the European HIRLAM consortium as the baseline system in the HIR-LAM Chemical Branch (https //hirlam.org/trac/wiki), it is used in several countries. 

At the current stage the Enviro-HIRLAM model is used as the baseline system for the HIRLAM chemical branch, and additionally to the HIRLAM community the following groups join the development team University of Copenhagen, Tartu University (Estonia), Russian State Hydro-Meteorological University and Tomsk State University, Odessa State Environmental University (Ukraine), etc. 

Decision to build HIRLAM Chemical Branch (HCB) with the Enviro-HIRLAM as a baseline system... 

Environment Canada (1993) Priority substances program, CEPA assessment report, chlorinated paraffins. Commercial chemicals branch, Hull Quebec... 

Heine, Lauren joined GreenBlue as Director of Applied Science after four years with Zero Waste Alliance (ZWA), where she was Director of Green Chemistry and Engineering. Earlier, Lauren was a Fellow with the American Association for the Advancement of Science in the Industrial Chemicals Branch of the U.S. EPA. 

Over the years, this particular class of compounds has mushroomed to give an enormous variety of compounds all having the characteristic feature of a cyclophane. Not only do cyclophanes enjoy great popularity in general, but they have also invaded many areas of chemistry. There is almost no chemical branch where cyclophane structures are not met, mostly at a central point whether in a scientific or an application sense. 

Pestidde and Industrial Chemicals Branch, Diviskm of Contaminants Chemistry, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 200 C Street S.IV., Washington, DC 20204... 

The preferences of industrial policy have to be seen from this angle, and not only from the more superficial perspective of war preparations. In practice, however, for the bulk of chemical branches the two motivations made little difference. The replacement of imports was of course welcomed, because it obliged the state to foster the production of new synthetic goods. Insistently claimed, rather than passively welcomed, this policy led to the escape from the dictates of international cartels and the decision to confine foreign capital to spheres where it could not hamper the acquisition of technical capabilities. 

The five cases summarized in this contribution suggest that those observers were not very far from wrong. If we draw comparisons with advanced industrial countries, then we should consider firstly the relatively narrow horizon that a still agrarian country such as Spain offered for the chemical industry until the 1930s. It is true that both agriculture and the industrial sector made progress and that this benefited some chemical branches, but economic progress was, for several reasons, more modest than... 

Paper making consumed several thousand tons of various chemicals annually, and this demand stimulated the development of certain chemical branches, such as the production of sulphur, chlorine, and caustic and calcium salts. Nevertheless, in 1938 more than half of the chlorine, chloride of lime, sulphur and Glauber salt required was imported. Therefore, even in this field not all potential for growth was used. 

Letter from Mary E. Cushmac, Chief, Policy and Administrative Section, New Chemicals Branch, to Fred H. Parry of Hoechst Celanese Corporation (Aug. 12,1994). 

Pennsylvania Avenue, Washington, DC 20500 Zero Waste Alliance, International Sustainable Development Foundation, 3624 S.W. 10th Avenue, Portland, OR 97201 Industrial Chemicals Branch, U.S. Environmental Protection Agency, Waterside Mall, Mail Code 7406, 401 M Street, SW, Washington, DC 20460... 

The proportionality coefficient, c, in the Eq. (27) has a clear physical significance it defines the greatest density of chemical branching centers per one macromolecule. Parameter (d - 1)/Dj is defined by this density decrease with macromolecular coil structnral features. For PHE the value c 1.41. The values g, (d -l)/Dj,and c [(d -l)/Dj.] for PHE at three synthesis temperatures T are fisted in Table 4, from which a good correspondence of the first and the third parameters from the indicated ones follows. 

After formation of the GDR, production plans were coordinated between the SAG headquarters and the State Planning Commission (Staatliche Plankommission). The possibilities for the German authorities to influence the SAG companies were, however, limited. For example, the manager of the chemical branch of the State Planning Commission, Professor Bertsch, pointed out in an internal letter that the "the attempts of his headquarters... 

There existed a special member category, known as the Grander (founders). These were single persons or companies from the chemical branch contributing a higher membership fee (about 20011 before 1900). 

---