Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

R-p-element

H. Kramers and K. R. Westerterp, Elements of Chemical Reactor Design and Operation, Academic Press, Inc., New York, 1963, p. 228. [Pg.529]

C = basic dynamic load rating in kg or N (provided by the bearing manufacturer). It is the load which will give a life of 1 million revolutions P - equivalent dynamic bearing load in kg or N p = exponent of the life equation, which depends upon the type of contact between the races and the rolling elements. It is recommended as 3 for ball bearings and 10/3 for roller bearings = speed of the machine in r.p.m. [Pg.215]

Dithiolato Complexes of the Transition Elements R. P. Burns, F. P. McCullough, and C. A. McAuliffe... [Pg.449]

Mason, R. P., Fitzgerald, W. F. and Morel, F. M. M. (1994). The biogeochemical cycling of elemental mercury Anthropogeruc influences. Geochim. Cosmochim. Acta 58, 3191-3198. [Pg.417]

In whole tissue or cell monolayer experiments, transcellular membrane resistance (Rm = Pm1) lumps mucosal to serosal compartment elements in series with aqueous resistance (R = P ). The operational definition of Lm depends on the experimental procedure for solute transport measurement (see Section VII), but its magnitude can be considered relatively constant within any given experimental system. Since the Kp range dwarfs the range of Dm, solute differences in partition coefficient dominate solute differences in transcellular membrane transport. The lumped precellular resistance and lumped membrane resistance add in series to define an effective resistance to solute transport ... [Pg.173]

F. M. Rourke and R. P. Schuman Review of the Joint AECL-KAPL-Studies of the Transuranium Elements. Report KAPL-1781 (2. Juli 1957)-... [Pg.128]

The origin of chemical elements has been explained by various nuclear synthesis routes, such as hydrogen or helium burning, and a-, e-, s-, r-, p- and x-processes. "Tc is believed to be synthesized by the s (slow)-process in stars. This process involves successive neutron capture and / decay at relatively low neutron densities neutron capture rates in this process are slow as compared to /1-decay rates. The nuclides near the -stability line are formed from the iron group to bismuth. [Pg.13]

Hinkley T.K., Lamother P.J., Meeker G.P., Jiang X., Miller M.E., Fulton R. Trace elements deposited with dusts in Southwestern U.S. - enrichments, fluxes, comparison with records from elsewhere. Proceedings of the ICAR5/GCTE-SEN Joint Conference, International Center for Arid and Semiarid Lands Studies 2002 Lubbock, Texas Texas Tech University, 2002. [Pg.339]

Raychaudhuri S.P., Datta B.N.R. Trace element status of India soils. J Indian Soc. Soil Sci 1964 12 207-214. [Pg.348]

Mason, B. and Moore, C.B. (1982). Principles of Geochemistry (4th ed.). Wiley, New York Press, F.S. and Siever, R. (1986). Earth (4th ed.). W.H. Freeman and Company, New York Stanley, S.M. (2002). Earth System History. W.H. Freeman and Company, New York Wayne, R.P. (2002). Chemistry of Atmospheres (3rd ed.). Oxford University Press, Oxford Williams, R. J.P. and Frausto da Silva, J.J.R. (1996). The Natural Selection of the Chemical Elements - The Environment and Life s Chemistry. Clarendon Press, Oxford... [Pg.33]

Dudd, S. N. and Evershed, R. P. (1998) Direct demonstration of milk as an element of archaeological... [Pg.426]

Larger chalcogen-phosphorus heterocycles, although less common in the literature, are accessible via a variety of synthetic routes.2,83,84 For example, the cyclic trimer (SPR)3 (R = 2,4,6-tri-tert-butylphenyl) contains a puckered six-membered P3S3 ring and is produced in the reaction of a phosphinic chloride with lithium sulfide (Equation 73).98 Additionally (R P)3Se5 (R = 2,4-di-tert-butyl-6-wopropoxyphenyl), synthesised from the oxidation of a primary phosphine with three equivalents of elemental selenium (Equation 74), has... [Pg.311]

Hatcher, C.O., R.E. Ogawa, T.P Poe, and J.R.P. French, III. 1992. Trace elements in lake sediment, macrozoobenthos, and fish near a coal ash disposal basin. Jour. Freshwater Ecol. 7 257-269. [Pg.522]

Cosson, R.P., J.C. Amiard, and C. Amiard-Triquet. 1988. Trace elements in little egrets and flamingos of Camargue, France. Ecotoxicol. Environ. Safety 15 107-116. [Pg.729]

Cosson, R.P, C. Amiard-Triquet, and J.C. Amiard. 1988a. Utilisation des plumes dans le recherche des sources de contamination des oiseaux par les elements traces Cd, Cu, Hg, Pb, Se, et Zn chez les flamants de Camargue, France. Water Air Soil Pollut. 42 103-115. [Pg.729]

R. P. Rodgers, E. N. Blumer, C. L. Hendrickson, and A. G. Marshall. Stable Isotope Incorporation Triples the Upper Mass Limit for Determination of Elemental Composition by Accurate Mass Measurement. J. Am. Soc. Mass Spectrom., 11(2000) 835-840. [Pg.85]

If the external magnetic field B(r), and m(r) have only a nonvanishing Z-component, B(r) = (0,0, B(r)) and m(r) = (0,0, m(r)), the universal functional F[p, m] may then be considered as a functional of the spin densities ps(r) and p(r), F[ps(r), p(r)], because the spin density is proportional to the z-component of the magnetization m(r) = p-bPsW P-b is the electron Bohr magneton. It is of worth mentioning that it is possible to define two spin densities that are the diagonal elements of the density matrix introduced by von Barth and Hedin [3]. These correspond to the spin-up (alpha) electrons density pT(r), and the spin-down (beta) electrons density p (r). In terms of these quantities, the electron and spin densities can be written as... [Pg.141]

Hughey, C.A. Hendrickson, C.L. Rodgers, R.P. Marshall, A.G. Elemental Composition Analysis of Processed and Unprocessed Diesel Fuel by Electrospray Ionization Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Energy Fuels 2001,15. 1186-1193. [Pg.110]

From the closure relation Z j j ) (j = 1 -1 g ) < g I, the sum over the product of transition matrix elements involving p,(r) and p (r )separates into two terms, one containing the ground-state expectation value of p (r) p (r ) and the other containing the product of the expectation values of p (r) and p (r ), both in the ground state. These terms can be further separated into those containing self interactions vs. those containing interactions between distinct electrons. Then... [Pg.177]


See other pages where R-p-element is mentioned: [Pg.136]    [Pg.71]    [Pg.4]    [Pg.5]    [Pg.206]    [Pg.136]    [Pg.136]    [Pg.71]    [Pg.4]    [Pg.5]    [Pg.206]    [Pg.136]    [Pg.1275]    [Pg.221]    [Pg.27]    [Pg.93]    [Pg.37]    [Pg.126]    [Pg.43]    [Pg.127]    [Pg.788]    [Pg.360]    [Pg.47]    [Pg.283]    [Pg.221]    [Pg.239]    [Pg.70]    [Pg.70]    [Pg.71]    [Pg.15]    [Pg.314]   
See also in sourсe #XX -- [ Pg.56 ]




SEARCH



P element

© 2024 chempedia.info