نتایج جستجو برای: altered fractionation
تعداد نتایج: 156301 فیلتر نتایج به سال:
The reconstruction of ancestral gene orders based on models of chromosomal rearrangement mechanisms is complicated when some of the input genomes have undergone whole genome duplications followed by fractionation, the massive loss of some or most of the duplicate genes. We describe a reconstruction protocol that uses maximum weight matching in two phases to overcome the fragmented nature of res...
Fractionation is important to understand someone’s health. How we can simulate blood fractionation through a simple, inexpensive ink spread experiment more about blood fractionation and liquid chromatography. Cotton will spread on ink the most because it has the most pores. Pilot ink spreads fast because it is water-based (low viscosity). Higher temperatures should result in more spread because...
No group of proteins has been as extensively investigated or as well characterized as bovine milk proteins. This can be attributed not only to the importance of milk as a food and as a raw material for a vast processing industry, but also to its convenience as an abundant source of relatively pure protein of varied structure and properties. In spite of the vast range of information available, h...
Sephacryl S-300 has been compared with Sephadex G-200 in the fractionation of sera for the detection of rubella-specific IgM. No difference in sensitivity was found with sera that had low titres of rubella-specific IgM. Sephadex G-200 was apparently more sensitive with some sera which had high titres of rubella-specific IgM due to the contribution of rubella-specific IgA. Sephacryl S-300 offers...
Positionally dependent fractionation factors for the photolysis of isotopomers of N20 in natural abundance have been determined by high resolution FTIR spectroscopy at three photolysis wavelengths. Fractionation factors show clear lSN position and photolysis wavelength dependence and are in qualitative agreement with theoretical models but are twice as large. The fractionation factors increase ...
The demonstration of tissue specific isoenzymes of lactic dehydrogenase and their variations in certain diseases (1, 2, 3) has invigorated the interest for further fractionation of other serum enzymes. Recently FLODIN and KILLANDER (4) have reported on the fractionation of human serum proteins by filtration through porous dextran gel "Sephadex G-200" (4). This method exposes the proteins to ver...
The surface elemental composition of dwarf planet Ceres constrains its regolith ice content, aqueous alteration processes, and interior evolution. Using nuclear spectroscopy data acquired by NASA's Dawn mission, we determined the concentrations of elemental hydrogen, iron, and potassium on Ceres. The data show that surface materials were processed by the action of water within the interior. The...
During the late phase of simian virus 40 infections of CV1 cells, the relative ratios of the spliced to the unspliced RNA molecules of the 19S family were measured. In the cytoplasm, unspliced 19S RNA represented between 1 and 2% of spliced 19S RNA. This ratio could be altered by the use of different methods of RNA extraction such that unspliced RNA was observed at 10 to 20% of spliced RNA. The...
The extent to which the properties of water in cells are like those of water in dilute aqueous solutions is a question of broad significance to cell biology. A detailed answer is not available at present, although evidence is accumulating that the properties of at least a large fraction of intracellular water are altered by interactions with cell ultrastructure, notably the cytomatrix. That and...
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