Now showing items 1-10 of 61
Characterization of gastrin amidation in the rat and porcine antrum: comparison with the pituitary
(Elsevier, 1990-04-24)
The formation of biologically active gastrin from glycine-extended processing intermediates occurs via the action of a peptide [alpha]-amidating enzyme. The observation that gastrin exists primarily as unamidated precursors ...
Fusion of mercury a new certified standard for differential scanning calorimetry
(Elsevier, 1990-03)
From the results of adiabatic-calorimetric measurements, mercury has been certified as a standard reference material for temperature and enthalpy of fusion for differential scanning calorimetry. The fusion temperature is ...
Fluorescence Yield Near Edge Spectroscopy (FYNES) of benzene adsorbed in Na-Y zeolite
(Baltzer Science Publishers, Baarn/Kluwer Academic Publishers; J.C. Baltzer AG, Scientific Publishing Company ; Springer Science+Business Media, 1990-01)
Benzene adsorbed in sodium-Y zeolite has been investigated using Fluorescence Yield Near Edge Spectroscopy (FYNES). These studies demonstrate that FYNES measurements are feasible as a direct probe of the local electronic ...
Thermodynamics of alkali alkanoates VII. Heat capacity and thermodynamic functions of potassium acetate from 4 to 585 K
(Elsevier, 1990-01)
The heat capacity of potassium acetate was measured by equilibrium adiabatic calorimetry from near 4 K up to 350 K and by d.s.c. from 325 K through melting (solid to isotropic liquid) to 585 K. No transition or anomaly was ...
Hydrogen-induced low temperature CO displacement from the Pt(111) surface
(Elsevier, 1990-10-02)
A new low temperature displacement mechanism for CO on the Pt(111) surface has been observed in the presence of high pressures of hydrogen (0.001 to 0.1 Torr H2). Temperature-programmed fluorescence yield near-edge ...
Inhibition of hypochlorous acid-mediated reactions by desferrioxamine. Implications for the mechanism of cellular injury by neutrophils
(Elsevier, 1990)
Inhibition of free radical mechanisms by desferrioxamine, an iron chelator, is often thought to be a good indicator of iron-catalyzed hydroxyl radical (OH[middle dot]) production. The specificity of desferrioxamine is ...
Aclacinomycin A in the treatment of multiple myeloma: A Southwest Oncology Group study
(Kluwer Academic Publishers; Springer Science+Business Media, 1990-02)
Fifty-two patients with progressive resistant multiple myeloma were entered in this Southwest Oncology Group Phase II study, using weekly intravenous Aclacinomycin A. Of forty-three evaluable patients for response, there ...
Fe---P---0 catalysts for methane utilization--catalyst development and identification
(Elsevier, 1990-05)
Fe---P---0 catalyst formulations show great promise for oxidative coupling of methane. They attain yields of C2 hydrocarbons comparable to the best in the literature at a temperature which is far below those reported. The ...
Vibrational analysis of 2,2,3-trichlorobutane and a force field for 2,2-dichloropropane
(Elsevier, 1990)
The infrared and Raman spectra of 2,2,3-dichlorobutane have been analysed in terms of normal modes calculated from a force field for secondary dichlorides refined using this molecule as well as 2,2-dichlorobutane and ...
Initiation of poly-N-acetyllactosamine chain biosynthesis occurs preferentially on complex multiantennary asparagine-linked oligosaccharides
(Elsevier, 1990-08-01)
An N-acetyl-[beta]--glucosaminyltransferase activity involved in the initiation of poly-N-acetyllactosamine chain biosynthesis can be solubilized from Ehrlich ascites tumor cell microsomal membranes. The ability of this ...