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Synthesis and molecular structure of the eight-coordinate complex bis( 4-amino-N,N’-disalicylidene- 1,2-phenylenediaminato)zirconium( IV), a new reagent for preparing coordination polymers
(The American Chemical Society: Inorganic Chemistry, 1987-12-30)
The precursor complex bis(4-nitro-N,N’-disalicylidene- 1,2-phenylenediaminato)zirconium(IV);Zr(ndsp)2, was synthesized from the appropriate Schiff-base ligand and zirconium tetra-n-butoxide butanol complex (2:1, respectively) ...
The ecological cost of morphological specialization: feeding by a fossorial lizard
(Springer: Oecologia, 1987-08)
Head size and shape of reptiles may reflect selection for multiple uses. For example, sexual selection for large head size may enhance feeding efficiency. In contrast, morphological characteristics of the heads of fossorial ...
An azophenolic colorimetric reagent for use in enzyme-linked immunosorbent assays.
(Elsevier: Analytical Biochemistry, 1987-08-01)
A colorimetric reagent, 4-(4'-nitro-2'-methylsulfonylphenylazo)phenyl phosphate (NMPP), has been shown to be an effective substrate of alkaline phosphatase. NMPP and p-nitrophenyl phosphate were applied in comparative ...
Electrochemical oxidation and reduction of methylene-bridged complexes of manganese, cobalt, and rhodium
(The American Chemical Society: Organometallics, 1987-08)
The oxidation and reduction of a series of alkylidene-bridged dimetallic compounds containing Mn, Co, or Rh have been studied by electrochemical and spectroscopic techniques. Oxidation results in production of a cation ...
The abundance of salamanders in forest stands with different histories of disturbance
(Elsevier: Forest Ecology and Management, 1987-07)
Because of the importance of salamanders in forest food chains, the effects of forest management practices on populations of these animals warrant consideration. We compared the numbers and activity patterns of salamanders ...
High resolution X-ray fluorescence spectroscopy : A potentially useful technique for chemical bonding studies in fossil fuels
(Elsevier: Fuel, 1987-07)
The high resolution oxygen (O-K) and carbon (C-K) X-ray fluorescence spectra of coals were taken on a 5 metre grating X-ray spectrometer. A comparison of the C-K spectra of a North Dakota lignite (Beulah) and a Utah ...
Unusual oxidative behavior of (.eta.5-C5R5)M(CO)2 (R = H, CH3; M = Rh, Co) complexes at mercury and platinum electrodes
(The American Chemical Society: Inorganic Chemistry, 1987-06-17)
The electrochemical oxidative behavior of a series of cyclopentadienyl and pentamethylcyclopentadienyl carbonyl complexes of rhodium and cobalt is described. The voltammetric, polarographic, and coulometric data from the ...
Fast charge-transfer reactions of binuclear complexes undergoing large changes in metal---metal bond lengths
(Elsevier: Journal of Electroanalytical Chemistry, 1987-05-08)
Heterogeneous electron-transfer rates have been measured for three binuclear complexes, Cp2Fe2(CO)2(μ-SMe)2, 1, Cp2Fe2(CO)2(μ-PPh2)2, 2, and Cp2Mo2(μ-SMe)4, 3. Dahl and co-workers had shown previously that the cations of ...
A transposable epitope of HLA-137, B40 molecules
(Springer: Immunogenetics, 1987-05)
The monoclonal antibody M1340.2 defines a novel subtype of HLA-1340 that is expressed by the Sweig cell line. This molecule, called HLA-B40*, lacks an antigenic determinant that is common to HLA-137 and the HLA-Bw60 subtype ...
Models for the prediction of color in graphic reproduction technology
(1987-05)
A general method which permits the prediction of color in graphic reproduction is disclosed. This method involves generalizing models used to
predict density in black and white printing. The models used in black
and white ...