Now showing items 1-10 of 136
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 ...
Cortisol response to a psychological stressor and/or nicotine
(Elsevier, 1990-05)
The effects of a psychological stressor and nicotine upon corticosteroid release were investigated using a full factorial, repeated-measures design in eight moderate smokers. Sessions involved the presentation of either ...
On performing experimental studies on transient states of continuous-flow methanogenic reactors
(Wiley Subscription Services, Inc., A Wiley Company, 1990-03-25)
One approach to exploring the behavior of microbial cultures during transient conditions of unbalanced growth is to experimentally observe continuous-flow biological reactors which have been subjected to perturbations in ...
Recovery of a foreign protein from the periplasm of Escherichia coli by chemical permeabilization
(Elsevier, 1990-08)
We have applied the technique of protein release by chemical permeabilization to recover a foreign protein in active form from the periplasm of a recombinant strain of Escherichia coli. The two agents used in our chemical ...
Dexamethasone attenuation of the cortisol response to nicotine in smokers
(Springer-Verlag, 1990-06)
The effect of corticosteroids upon the cortisol response to nicotine from smoking was investigated in five heavy smokers. Corticosteroid activity was manipulated by administering dexamethasone, a synthetic glucocortoicoid ...
Isolation and sequence analysis of CDC43, a gene involved in the controol of cell polarity in Saccharomyces cerevisiae
(Elsevier, 1990-05-31)
The Saccharomyces cerevisiae CDC43 gene product is involved in establishing cell polarity during the cell-division cycle. When grown at restrictive temperatures, temperature-sensitive cdc43 mutants are unable to form buds ...
Human chromosome 17 NotI linking clones and their use in long-range restriction mapping of the Miller-Dieker chromosome region (MDCR) in 17p13.3
(Elsevier, 1990-06)
A NotI linking library constructed from flow-sorted human chromosome 17 material was screened to aid in construction of a long-range restriction map of the Miller-Dieker chromosome region (MDCR) in 17p13.3. A total of 66 ...
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 ...
Protein separation using membrane-encapsulated soluble ligand conjugates
(Elsevier, 1990-05)
A new approach for isolating and recovering biological macromolecules using membrane-encapsulated soluble ligand conjugates was investigated. Membrane-encapsulated solid adsorbents have been successfully developed and ...