Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Roger V. Lloyd"'
Autor:
Michael T. Benson, James Davenport, Malinda E.C. Fitzgerald, William J. Lamoreaux, Nabil Bayakly, Marjorie Rothschild, Roger V. Lloyd, Sumoulindra T Bhattacharya, Lewis B. Coons
Publikováno v:
Experimental Parasitology. 94:111-120
We colocalized nitric oxide synthase (NOS) activity in epithelial cells that surround the salivary gland duct in female Dermacentor variabilis with NADPH diaphorase histochemistry and immunohistochemistry using a polyclonal anti-endothelial NOS. Usin
Autor:
Richard L. Roberts, Roger V. Lloyd
Publikováno v:
Journal of Agricultural and Food Chemistry. 45:2413-2418
ESR spectroscopy has been used to study the formation of free radicals in the Maillard browning reaction, from the reaction between glycolaldehyde or glyceraldehyde and N,N‘-dialkylethylenediamines (alkyl = methyl, ethyl, iso-propyl, tert-butyl) in
Publikováno v:
Free Radical Biology and Medicine. 22:885-888
There is an ongoing discussion in the chemical literature regarding the nature of the highly reactive hydroxyl radical formed from the reaction between ferrous iron and hydrogen peroxide (the Fenton reaction). However, the fundamental experiment of d
Publikováno v:
Biochemical and Biophysical Research Communications. 220:1043-1048
NADPH was shown to reduce tetrachloro-1,4-benzoquinone (TCBQ) to tetrachloro-1,4-benzene diol which was identified on the basis of cochromatography with synthetic standard in a reverse phase HPLC system, electronic absorption spectroscopy, and mass s
Publikováno v:
Chemical Research in Toxicology. 9:677-681
Due to the importance of all-trans-retinoic acid (RA) in the treatment of various dermatological conditions and the wide distribution of prostaglandin H synthase (PGHS) in tissues, we have further examined the mechanisms involved in the hydroperoxide
Autor:
Roger V. Lloyd
Publikováno v:
Chemical Research in Toxicology. 8:111-116
Manganese is an essential trace element for human metabolism, but at higher concentrations it is a potent neurotoxin that presents clinical symptoms similar to those of Parkinson's disease. Since the toxicity of manganese may be related to its abilit
Publikováno v:
The Journal of Geology. 103:51-61
The reaction path that dolomite follows in its formation, approach to stoichiometry, and approach to order differs in the presence or absence of iron. Dolomite was synthesized in hydrothermal bombs using eight starter combinations heated at 192°C fo
Publikováno v:
Chemical Geology. 105:253-257
In a continuing study of the relation between dolomite origin and its manganese partitioning ratios [ Mn PR = ( Mn ) Mg site ( Mn ) Ca site ] dolomite was synthesized hydrothermally at 180° and 250°C. Synthesis products include 100% to 0% calcite,
Publikováno v:
Geochimica et Cosmochimica Acta. 57:1071-1078
In order to obtain a tractable model with which to evaluate the relationships between the presence of iron, the Mn+2 partitioning ratio of dolomite (Mn PR = [(Mn)Mg-site(Mn)Ca-site]), and its Mn+2 ESR signal, dolomite was synthesized in hydrothermal
Publikováno v:
Journal of Investigative Dermatology. 117:740-742
The Maillard browning reaction between carbohydrates and amines is part of an extensive series of reactions that is the basis for the brown color caused by the “sunless tanning” agent dihydroxyacetone in self-tanning products. The initial stages