scispace - formally typeset
Search or ask a question

Showing papers by "University of Maryland, Baltimore County published in 1971"


Book ChapterDOI
01 Jan 1971
TL;DR: An understanding of the luminescence properties of tryptophan, tyrosine, and Phenylalanine is basic to an interpretation of the fluorescence and phosphorescence of the proteins.
Abstract: The fluorescence and phosphorescence of natural proteins arise from emission by the fluorogenic ring moieties of the aromatic amino acids. Such macromolecular luminescence may be visualized as corresponding to the intrinsic luminescence representing the summed contribution of the amino acid fluorogens, as perturbed by incorporation into a Polypeptide and by the influence of the secondary and tertiary structure of the protein. Accordingly, an understanding of the luminescence properties of tryptophan, tyrosine, and Phenylalanine is basic to an interpretation of the fluorescence and phosphorescence of the proteins.

51 citations


Journal ArticleDOI
TL;DR: In this article, a 25-word list of high-imagery words with a mnemonic imagery technique (method of loci) was compared to a control group who basically learned the list by grouping the words.
Abstract: A group in which Ss learned a 25-word list of high-imagery words with a mnemonic imagery technique (method of loci) was compared to a control group who basically learned the list by grouping the words. All Ss were required to learn the words in a given order. Learning times, along with three types of recall measures involving ordering of words and a recognition memory measure, were taken after 1 and 5 weeks. The results showed that learning was faster and recall better with fewer order errors in the imagery condition. The recognition memory measure showed very high scores in both groups, with no significant differences between them. The results were interpreted as showing that at least part of the effectiveness of mnemonic imagery devices comes about by making items more accessible during recall.

42 citations


Journal ArticleDOI
TL;DR: Two linkage groups were established in Bacillus pumilus NRRL B-3275 by bacteriophage PBS1 transduction and contains the auxotrophic markers gly, his, and met.
Abstract: Two linkage groups were established in Bacillus pumilus NRRL B-3275 by bacteriophage PBS1 transduction. Group L contains the auxotrophic markers gly, his, and met. Group M contains the markers argO, met, ura, and cys.

14 citations


Journal ArticleDOI
01 Jan 1971-Virology
TL;DR: The virulent bacteriophage MX-1 lytic cycle in vegetative cells of Myxococcus xanthus has been followed by fine structure studies of thin sections and it appears that tail synthesis occurs by addition of tail proteins to completed heads.

11 citations


Journal ArticleDOI
TL;DR: Methods have been developed for analyzing the binding of ligand by a protein exhibiting allosteric properties and the relationship to existing theoretical models has been discussed.

11 citations


Journal ArticleDOI
TL;DR: The Eusebian image of the first Christian emperor is a key to understanding the nature of Eusebius' panegyric as well as his notion of Constantine's relationship with the Christian God.
Abstract: Historians generally have concerned themselves with the reliability of the Vita Constantini of Eusebius, while ignoring an important contribution of the panegyricist, namely, the image of Constantine he projects to his readers. This image, or the “Eusebian Constantine,” involves four major elements: (1) all success and benefit derive from the favor of the divinity; (2) only the pious receive divine favor; (3) the most important indication of divine favor for a pious ruler is military victory; and (4) with the victory secured, divine favor will produce peace and unity for the realm. Constantine, being close to Eusebius, helped to mold his own image which is more than a representation of the first Christian emperor—it is a key to understanding the nature of Eusebius' panegyric as well as his notion of Constantine's relationship with the Christian God.

9 citations


Journal ArticleDOI
TL;DR: The system purine plus uridine in water corresponds to the association of two different monomers, both of which self-associate, and the association constant obtained for purine and uridine is of a similar order of magnitude to that reported for the Association of purines and thymine from solubility data.

9 citations


Journal ArticleDOI
TL;DR: In this paper, an equation for magnetogasdynamic shock polar, given in terms of magnetic induction polar variables (i.e., the magnet induction polar), is obtained, and the evolutionary and entropy non-decrease conditions are assumed to admit immediate geometrical interpretation.
Abstract: An equation for magnetogasdynamic shock polar, given in terms of magnetic induction polar variables (i.e. the magnetic induction polar), is obtained. Evolutionary and entropy non-decrease conditions, given in terms of these polar variables, assume a very simple form, and admit immediate geometrical interpretation. It is found that this magnetic induction polar is far more natural and convenient to use than the shock polar given in terms of conventional velocity polar variables.

8 citations


Journal ArticleDOI
TL;DR: In this article, the existence of solutions defined for all time is investigated for scalar delay differential equations with delayed arguments, and the authors apply the following result of Winston [5] to demonstrate some simple delay equations which admit only the zero solution.

5 citations