5,016 research outputs found
How do nematodes transfer phosphorylcholine to carbohydrates?
An unusual aspect of the biology of nematodes is the attachment of phosphorylcholine (PC) to carbohydrate. The attachment appears to play an important role in nematode development and, in some parasitic species, in immunomodulation. This article considers the nature of the biosynthetic pathway of nematode PC-containing glycoconjugates and, in particular, the identity of the final component in the pathway - the enzyme that transfers PC to carbohydrate (the 'PC transferase'). We offer the opinion that the PC transferase could be a member of the fukutin family (fukutin refers to the mutated gene product that causes Fukuyama congenital muscular dystrophy), a group of enzymes with apparent phosphoryl-ligand transferase activity that are found in organisms ranging from bacteria to humans
Electrochemically Deposited Cadmium Electrode for Sealed Ni-cd Cells
An investigation into the work on electrochemical cadmium deposition processes is describred. A beaker impregnation system is constructed to investigate the practical limits of loading and the effect of various process parameters. Reasonably high loadings of cadmium are obtained and the process appears amenable to tight control and the production of uniform consistent electrodes. A pilot impregnation facility is built to further investigate electrodeposition processes. Both the inert anode and consummable anode processes are investigated. Results of this evaluation and an analysis of associated problems are presented
Lunar soil properties and soil mechanics
The long-range objectives were to develop methods of experimentation and analysis for the determination of the physical properties and engineering behavior of lunar surface materials under in situ environmental conditions. Data for this purpose were obtained from on-site manned investigations, orbiting and softlanded spacecraft, and terrestrial simulation studies. Knowledge of lunar surface material properties are reported for the development of models for several types of lunar studies and for the investigation of lunar processes. The results have direct engineering application for manned missions to the moon
A Comparison of the Rhetorical Modes of Persuasion Used By Churches In the Proselytization of Peoples of Lower Economic Status In South Mississippi
This study provides insight into the persuasion techniques used by churches in the Southern Baptist Convention, as well as the reactions of people of lower economic status to the persuasion techniques. Furthermore, this study provides a unique look at rhetorical persuasion strategies used by a religious organization. Results of this study indicate that church members relied on its own credibility, logical and emotional appeals to need, and appeals to humor to influence, it turned out, a person of lower economic status’ acceptance of persuasion via a peripheral route and being positively affected by the church’s credibility. The findings also suggest that Source Credibility Theory and the Elaboration Likelihood Model are major components in the acceptance of persuasion by people of lower economic status. The results of this study provide theoretical insight into our understanding of church persuasion techniques as a whole and strengthen the credibility of practical persuasion tactics that, paired with other factors, could lead other churches to success in proselytization of people of lower economic status
Harry Carothers Wiess
Address given October 23, 1958, before the Master, Associates, and Members of Wiess College, the Rice Institut
FLUORINE DISPOSAL USING CHARCOAL
Wood, coke, and coconut-shell charcoals were evaluated for fluorine entrapment. The coconut-shell charcoal produced the smallest amount of solid and liquid reaction products. Efficient removal of fluorine was accomplished by the coconut-shell charcoal in a 5-in.-diameter reactor with a feed containing 25% fluorine at flow rates from 100 to 400 scfh and reactor-wall temperatures of 1200 to 1800 deg F. (C.J.G.
Application LANDSAT imagery to geologic mapping in the ice-free valleys of Antarctica
The author has identified the following significant results. Studies in the Ice-Free Valleys are resulted in the compilation of a sizeable library of maps and publications. Rock reflectance measurements were taken during the Antarctic summer of 1973. Spectral reflectance of rocks (mostly mafic lava flows) in the McMurdo and Ice-Free Valleys areas were measured using a filter wheel photometer equipped to measure reflectances in the four Landsat bands. A series of samples were collected at regular intervals across a large differentiated, mafic sill near Lake Vida. Chemical analyses of the sample suggest that the tonal variations in this sill are controlled by changes in the iron content of the rock. False color images were prepared for a number of areas by the diazo method and with an optical multispectral biviewer. These images were useful in defining boundaries of sea ice, snow cover, and in the study of ablating glaciers, but were not very useful for rock discrimination
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