ChromatographySeparationMethodLiquidPurificationSolutesContinuousAbsorptionSolventsSNAREProteinEnablesBiologicalMechanismProcedureTheoryLiquid-liquidProcessExchangeCounter-current distributionMatrixMolecularMathematicalSpecies distributionBiphasicTechniquePhasesSystemMoleculesPerformanceStudyMainDevelopmentArticleCompoundSize
- This is where countercurrent chromatography (CCC) is helpful. (news-medical.net)
- The long time required for separation as well as the tedium of maintaining the countercurrent distribution have been overcome by the development of a number of highly efficient systems, with the result of CCC gaining popularity as a technique for the fractionation of natural products. (news-medical.net)
- CCC provides a method of achieving the best possible countercurrent distribution. (news-medical.net)
- Countercurrent distribution of the solutes happens in such a way that components with decreasing order of polarity are eluted in one liquid (say within a tubular system) and compounds with increasing order of polarity are eluted in the other liquid (mobile phase). (news-medical.net)
- Mycolic acids from Mycobacterium tuberculosis: purification by countercurrent distribution and T-cell stimulation. (biomedsearch.com)
- Purification by counter-current distribution and sequencing of isolated fragments. (springer.com)
- Cleavage of the protecting groups of the resulting nonapeptide with sodium in liquid ammonia, oxidation with air in dilute aqueous solution and purification by counter-current distribution gives the desired cyclic nonapeptide amide: (N-methyl-Tyr)(2)-oxytocin. (dtic.mil)
- Countercurrent distribution of the solutes happens in such a way that components with decreasing order of polarity are eluted in one liquid (say within a tubular system) and compounds with increasing order of polarity are eluted in the other liquid (mobile phase). (news-medical.net)
- In developing ION-IX, PuriTech's main objective was to improve on existing system design, in particular continuous countercurrent processes, and broaden and extend the technology's application base. (environmental-expert.com)
- Standard, existing technologies include fixed-bed and continuous countercurrent ion exchange systems. (environmental-expert.com)
- Based on a batch-style operation, fixed-bed units are used in around 90% of projects, but compared with continuous countercurrent systems their performance is relatively weak. (environmental-expert.com)
- Other continuous countercurrent ion exchange systems use a carousel to rotate the resin cells around a central valve. (environmental-expert.com)
- Realising the growing market potential of ion exchange, PuriTech has taken continuous countercurrent ion exchange system design to a new level. (environmental-expert.com)
- ION-IX uses a single, multi-port distribution valve, creating a process system for continuous, countercurrent ion exchange. (environmental-expert.com)
- The technology is markedly different from other continuous, countercurrent ion exchange systems that are available in the market place. (environmental-expert.com)
- Countercurrent contacting on a continuous basis does not suffer these limitations, because it is not a batch process. (environmental-expert.com)
- Determining the rate and extent of absorption, metabolism, distribution, and elimination of investigative molecules gradually became part of the overall pharmacological evaluation. (aspetjournals.org)
- Quantitation of countercurrent exchange during passive absorption from the dog small intestine: evidence for marked species differences in the effi. (nih.gov)
- The present investigation was designed to quantitatively assess the possible influence of countercurrent exchange on passive absorption from the small intestine of the dog. (nih.gov)
- This low absorption rate could result from diffusion limitation to absorption or countercurrent exchange. (nih.gov)
- The striking effect of countercurrent exchange on passive absorption in the dog differs from our previous studies in the rabbit where no exchange was demonstrated. (nih.gov)
- the two solvents, called the distribution coefficient, is characteristic of the compound and of the solvent pair. (britannica.com)
- The stable steady state is the result of a balance between this autocatalytic SNARE accumulation in a compartment and the distribution of SNAREs between compartments by vesicle budding. (rupress.org)
- The resulting nonhomogeneous SNARE distribution generates coat-specific vesicle fluxes that determine the size of compartments. (rupress.org)
- 2004. Countercurrent distribution of two distinct SNARE complexes mediating transport within the Golgi stack. (columbia.edu)
- Using countercurrent distribution he separated individual transfer RNA's (tRNA)- the link between DNA and protein synthesis -which match up to each of the twenty two amino acids that make up all proteins. (nasonline.org)
- Enzymolysis kinetics, thermodynamics and model of porcine cerebral protein with single-frequency countercurrent and pulsed ultrasound-assisted processing. (nih.gov)
- Countercurrent configuration of these stages enables enhanced impurity removal and higher yield for each chromatographic step. (bioprocessintl.com)
- The increase of MS sensitivity due to the difluoroacetic acid (estimated limits of detection in biological matrices 1-500 ng/mL) significantly varied for proteins with lower and higher charge state distributions. (bioportfolio.com)
- Understanding the mechanism of cocurrent and countercurrent imbibition is essential in oil recovery from fractured reservoirs. (onepetro.org)
- We here present the fractionation of electrically modified erythroblasts by the use of an automatic multiple-partition procedure, counter-current distribution. (authormapper.com)
- I. Theory of countercurrent distribution (CCD). (dbcls.jp)
- Our algorithm for the analysis and interpretation of digitized images will be used for the calculation of particle size and shape distributions for modelling liquid-liquid systems. (hindawi.com)
- in water is called the distribution coefficient, and it is clear that for an efficient extraction process it is desirable to have as large a distribution coefficient as possible. (britannica.com)
- This result is in accord with theoretical calculations which suggest that countercurrent exchange should be exceedingly efficient in the dog. (nih.gov)
- The entire villus of the rabbit may equilibrate with the lumen and no gradient for countercurrent exchange can therefore be established. (nih.gov)
- It was purified with counter current distribution method. (gpatindia.com)
- The flow of oil from matrix system to fracture system will generally involve both cocurrent and countercurrent imbibition. (onepetro.org)
- Thermal and single frequency counter-current ultrasound pretreatments of sodium caseinate: enzymolysis kinetics and thermodynamics, amino acids composition, molecular weight distribution and antioxidant peptides. (nih.gov)
- In this paper, a new mathematical model, which could be used to simulate the combination of cocurrent and countercurrent imbibition with the two-ends-open oil/water (TEO-OW) boundary condition, is developed. (onepetro.org)
- However, despite 100 years of research on eels, there is still a lack of knowledge about the specific hydrographic and biotic conditions governing species distribution and dispersal dynamics during the larval phase. (royalsocietypublishing.org)
- With the objective of predicting the potential suitable habitat for a shark ( Carcharhinus falciformis) and a teleost ( Canthidermis maculata) in the Indian, Atlantic and Eastern Pacific Oceans, a MaxEnt species distribution model (SDM) was developed using data collected by observers in tuna purse seiners. (frontiersin.org)
- Lyman Craig's development of countercurrent distribution began with studying the distribution of a pharmaceutical, mepacrine (atabrine), between the two layers of an ethylene dichloride, methanol, and aqueous buffer biphasic solvent system. (wikipedia.org)
- objectives are to present the operative details and to establish the feasibility of the modified technique of en bloc pelvic resection, which begins with the central ligation of vessels supplying the tumor bed. (faintpower.cf)
- The acquisition and treatment of images of particulate phases become essential for the calculation of particle size and shape distributions, namely in multiphase systems modelling in chemical engineering. (hindawi.com)
- The distribution coefficient (Kc which coincides with partition coefficient) of atabrine varied by the composition of the solvent system and the pH of the buffer. (wikipedia.org)
- Countercurrent distribution of lymphocytes from human peripheral blood in an aqueous two-phase system. (keflex2020.site)
- If, for a particular solute, the distribution favours the moving fluid, the molecules will spend most of their time migrating with the stream and will be transported away from other species whose molecules are retained longer by the stationary phase. (enacademic.com)
- No commercial reproduction, distribution, display or performance rights in this work are provided. (caltech.edu)
- This study shows that Drosophila Miro (dMiro), which has previously been shown to be required for kinesin-driven axonal transport, is also critically required for the dynein-driven distribution of mitochondria into dendrites . (sdbonline.org)
- recognizing friends last year in the otherwise dehumanizing but remarkably effective countercurrent distribution down the long main hallway. (biophysics.org)
- This work presents new information about the present and future habitat distribution under climate change of both by-catch species which can contributes to the development of ecosystem-based fishery management and spatially driven management measures. (frontiersin.org)
- But the idea of a "Shock and Awe" treatment of the Indian Economy is as per the dictates of International Finance Capital, as pointed by Shri Sreedhar in an article in Countercurrents. (countercurrents.org)
- Countercurrent distribution of the formed compound gave O-(benzyloxycarbonyl-L-N-methylvalyl)-N-t-butyloxycarbonyl-L-threonine. (gpatindia.com)
- In contrast, dMiro T460N did not impair viability, mitochondrial size, or the distribution of mitochondria. (sdbonline.org)
- Overall, this analysis indicates that dMiro's N-terminal GTPase domain is critically required for viability, mitochondrial size, and the distribution of mitochondria out of the neuronal soma regardless of the employed motor, likely by promoting the transition from a stationary to a motile state. (sdbonline.org)
- In that work, to obtain the drop size distribution, images were analyzed by employing visual/manual techniques which imply high costs, intensive labour, weariness buildup, and consequent high error rates. (hindawi.com)
- The geometry of the glass beads is spherical and the particle-size distribution is narrow, and the geometry of the quartz sand is irregular and the particle-size distribution is wide. (onepetro.org)