摘要:
In accordance with particular descriptions provided herein, certain embodiments of the inventive technology may be described as a hydrocarbon viscosity reduction method that comprises the steps of: treating a hydrocarbon having asphaltenes therein to generate a treated hydrocarbon, wherein said hydrocarbon has a first viscosity; contacting said treated hydrocarbon with a sorbent (whether as a result of pouring or other means); and adsorbing at least a portion of said asphaltenes onto said sorbent, thereby removing said at least a portion of said asphaltenes from said hydrocarbon so as to generate a viscosity reduced hydrocarbon having a second viscosity that is lower than said first viscosity.
摘要:
The present invention relates to a refractive index detector for a dynamic liquid sample having a fiber optic filament of a predetermined diameter with an unclad sensor region, wherein the sensor region comprises a longitudinally tapered zone wherein the diameter continuously decreases from the predetermined diameter to a minimum diameter. The invention finds use as a detector for high performance liquid chromatography and capillary zone electrophoresis.
摘要:
cDNA clones encoding minor ampullate spidroin proteins (MiSP) are described. The translated amino acid sequence of the cloned cDNA shows that the MiSPs have a structure which exhibits an amino proximal nonrepetitive region, a repetitive portion and a carboxy-proximal nonrepetitive portion. The repetitive portion of the sequence is describable by a generic repeat formula. Comparison of the amino acid sequences derived from the translation with the sequences of short peptides obtained from solubilized minor ampullate spider silk suggests that the nonrepetitive portions of the protein are cleaved from the protein during secretion from the cells synthesizing the spidroins. This comparison also suggests that the minor ampullate spider silk is composed of at least three polypeptides.
摘要:
The present invention is directed to isolated cDNA which codes for spider silk protein or a fragment or variant thereof, a replicable vector containing cDNA which codes for spider silk protein and which is capable of expressing spider silk protein, a transformed cell or microorganism containing cDNA which codes for spider silk protein or a fragment thereof which is capable of expressing spider silk protein and products, such as fibers, which may be manufactured utilizing the recombinant protein of the present invention.
摘要:
Composés de nucléosides et de nucléotides de 5-azido-2'-désoxyuridine et leur procédé de production. Le procédé comprend la réaction d'un composé de 5'-désoxyuridine avec du tétrafluoroborate nitrosé afin de produire un composé de 5-nitro-désoxyuridine. Le composé de 5-nitro-désoxyuridine est réduit à un composé de 5-amino-désoxyuridine en présence du zinc méallique. Le composé de 5-amino-désoxyuridine est acidifié et entre en réaction avec du nitrite de sodium pour produire un composé de 5-diazo-désoxyuridine. On fait ensuite réagir le composé de 5-diazo-désoxyuridine avec de l'azoture de sodium pour produire un composé de 5-azoture-désoxyuridine. On fait réagir ce dernier, sous sa forme monophosphate, avec du diphénylchlorophosphate pour produire un triphosphate photoactif, le 5-azoture-2'-désoxyuridine-5'-triphosphate ou 5-azoture-dVTP. Ajouté à l'ADN dans une réaction de synthèse in vitro, ce composé photoactif produit de l'ADN photoactif.
摘要:
Methods and systems for the biological conversion of pretreated or solubilized coal or waste coal into biofuels. Coal (10) may be pretreated perhaps in a pretreatment reactor (13). Pretreated coal or even solubilized coal may be introduced into a processing reactor such as a bioreactor (16) containing a plurality of microorganisms (9) such as oleaginous microorganisms which can convert at least some of the pretreated or solubilized coal into lipids (19) or biomass (18), which then may be used directly or as a precursor for various products such as biofuels, feedstock, or the like.
摘要:
Efficient coal pre-processing systems (69) integrated with gasification, oxy-combustion, and power plant systems include a drying chamber (28), a volatile metal removal chamber (30), recirculated gases, including recycled carbon dioxide (21), nitrogen (6), and gaseous exhaust (60) for increasing the efficiencies and lowering emissions in various coal processing systems.
摘要:
A method is disclosed for analyzing keratinized tissue, particularly fingernails, of a subject to diagnose osteoporosis and bone fracture risk. A Raman spectrum of a sample of keratinized tissue is generated. Broad spectral background features of the spectrum are removed, preferably by using Fourier transform analysis. Peak heights of Raman features of interest, particularly the S—S bond of cystine, are measured. These peak height measurements are normalized using reference peak heights of Raman features that are invariant between normal and osteoporotic subjects, such as the CH2 bending peak.