two-phase system การใช้

• Research of aqueous two - phase system of sds - cpc mixed surfactants
• Extraction of plant esterase by polyethylene glycol ammonium sulfate aqueous two - phase system
• Extraction mechanism of purple crystallize on the aqueous two - phase system of tetrabutylammonium bromide and 2so4 mixture
• Voidage measurement and flow pattern identification technique are two important research fields in the two - phase system . on the basis of ect technique ( electrical capacitance tomography )
• The aqueous two - phase system has been applied to the separation of biomolecules because of its gentle character , easy operation and high separating efficiency
• The specific subjects as bellow : firstly the two aqueous two - phase system of peg / ( nh4 ) 2so4 and peg / k2hpo4 were compared , then the better system was used for the aqueous two - phase extraction
• Motion control is a comprehensive subject . modern ac drive is a important embranchment in the field of motion control . however , it is difficult to rea1ize high - performance ac drive systems because induction motors are a kind of strongly - coupled nonlinear system with many variables and the torque is not easy to control . with vector control technology decoupling and torque control of ac motor are solved . the basic idea of vector control is that three - phase system is equiva1ent to two - phase system by coordinate transformation and it realizes the decoupling between field current and torque current of the stator in order to control the flux and current respectively , thus induction motor can be considered dc motor and high performance is achieved easily . with the progress of electric and electronic technology and the development of computer , high - integrated special modules and high - precision digital signal processor ( dsp ) are applied to ac drive so that vector control has been developed rapidly
• A novel aqueous two - phase system can be formed by the mixtures of a polymer and cationicanionic surfactants . such a system can be used as a partitioning system of proteins . in this work , we investigated the formation , phase behavior and protein partitioning in aqueous two - phase systems formed by dodecyltriethylammonium bromide / sodium dodecylsulfate / peg and dodecyltriethylammonium bromide / sodium dodecylsulfate / dextran . the ligands with affinity were attached to the polymers and the affinity partitioning of proteins was investigated . it was shown that the surfactants and polymers are enriched in different phases of aqueous two - phase systems . phase separation are promoted by increasing temperature and adding inorganic salts . different proteins are partitioned in different phases . the selectivity of protein partitioning is increased by adding ligands with affinity
• Abstract : a continuity wave model is put forward for the dispersion processof liquid - liquid two - phase system , by coupling mass and momentum conservation equations of two - fluid model . the conditions that result in a dispersion choke and the weak instability of a dispersion process are derived from the model . the phenomena of catastrophic inversion and transitional inversion are explained . the effect of drop size distribution on the maximum volume concentration of a emulsion is predicted using the model . according to the theory herein , emulsion inversion is the regime transition of liquid - liquid system due to the instablity of a dispersion process . the effect of drop size distribution on the maximum volume concentration of a liquid - liquid emulsion only occurs in a certain range of weber numbers
• Effective dielectric response of ellipsoid composites in which the dielectric function of the grains have the form of ( the equation is abbreviated ) ) embedded in a host medium is investigated in dilute limit based on perturbative expansion method , and general expressions for the effective linear dielectric function and ( - 1 ) - order nonlinear susceptibility of the two - phase system are derived in this paper