Werner, Martin

P. Werner, Martin-Luther-Universitat Halle-Wittenberg... 

P. Werner Martin-Luther-UniversMtHalle-Wimnberg, and D. Heidemann Institut fur anorganische Chemie Berlin, Germany... 

Devasagayam, T.P.A., Werner, T., Ippendorf, H., Martin H.-D., and Sies, H. 1992. Synthetic carotenoids, novel polyene polyketones and new capsorubin isomers as efficient quenchers of singlet molecular oxygen. 

Martin M, Gevert O, Werner H (1996) J Chem Soc Dalton Trans 2275-2283... 

Martin, M., Gevert, O. and Werner, H. (1996) Journal of the Chemical Society-Dalton Transactions, 2275. 

The first attempts to interpret Werner s views on an electronic basis were made in 1923 by Nevil Vincent Sidgwick (1873—1952) and Thomas Martin Lowry (1874—1936).103 Sidgwick s initial concern was to explain Werner s coordination number in terms of the sizes of the sub-groups of electrons in the Bohr atom.104 He soon developed the attempt to systematize coordination numbers into his concept of the effective atomic number (EAN).105 He considered ligands to be Lewis bases which donated electrons (usually one pair per ligand) to the metal ion, which thus behaves as a Lewis acid. Ions tend to add electrons by this process until the EAN (the sum of the electrons on the metal ion plus the electrons donated by the ligand) of the next noble gas is achieved. Today the EAN rule is of little theoretical importance. Although a number of elements obey it, there are many important stable exceptions. Nevertheless, it is extremely useful as a predictive rule in one area of coordination chemistry, that of metal carbonyls and nitrosyls. 

Schupp, C., Olano-Martin, E., Gerth, C., Morrissey, B.M., Cross, C.E., and Werner, J.S. Lutein, zeaxanthin, macular pigment and visual function in adult cystic fibrosis patients, Am. J. Clin. Nutr., 79(6), 1045-1052, 2004. 

In 1923, Nevil Vincent Sidgwick (1873-1952) and Thomas Martin Dowry (1874-1936) made the first attempts to interpret Werner s views on an electronic basis. Sidgwick tried to... 

In contrast to C and N, Si-metabolism is metabolicaUy inexpensive for a given cell size, a silicon frustule requires ca. 1/10 the total metabolic energy of an equivalent cell wall composed of carbon compounds (Raven, 1983). Si-metabolism is also not directly coupled to photosynthesis. Si-transport and deposition are driven by oxidative phosphorylation (Blank and SuUivan, 1979 Blank et al, 1986 Sullivan, 1976), while serine and glycine, the amino acids which provide the main fraction of the protein matrix for Si-deposition (Werner, 1977), are terminal substances produced during photorespiration (Burris, 1977). Si-metaboHsm is instead Hnked to the regulation of cell division (Fig. 37.2) and growth rates (Brzezinski et al, 1990 Martin-Jezequel et al, 2000 Volcani, 1981). 

Godenschwege TA, Reisch D, Diegelmann S, Eberle K, Funk N, Heisenberg M, Hoppe V, Hoppe J, Klagges BRE, Martin JR, Nikitina EA, Putz G, Reifegerste R, Reisch N, Rister J, Schaupp M, Scholz H, Schwarzel M, Werner U, Zars T, Buchner S, Buchner E (2004) Flies lacking all... 

Heinrich Hiihnerfuss1, Frank Hoffmann1, Johannes Simon-Kutscher1, Werner Alpers2 and Martin Gade2... 

Martin Kohimeier, Ren6 Kaiser, Werner Zielke... 

Only recently has the work of Bauschlicher, Walch and Siegbahn showed the need to include d correlation, whereas the work of Werner and Martin and of Scharf, Brode and Ahlrichs stressed the importance of cluster corrections and relativistic corrections. The results of Werner et al. were obtained using CEPA-1 to account for cluster contributions, while Scharf et al. used the CPF approach. Both groups accounted for relativistic corrections by employing first-order perturbation theory, i.e. by evaluating the Cowan-Griffin operator which consists of the mass-velocity and the one-electron Darwin term of the Breit-Pauli Hamiltonian. 

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