exchange concentration
1.The ion exchange method was used to purify and enrich glutathione from wheat germ extract permeating liquor through 5nm ceramic membrane . The result of comparative experiments showed that Amberlite 252 macroporous ion exchange resin was the most appropriate type, and that 1 mol/L HCl liquor was the most appropriate eluant. The volume of permeating liquor decreased 55 % after ion exchange processing and the concentration of glutathione nearly increased two times.
2.Owingto usong microresins with diameters of 30-60 micron,the technology ofpressurized ion exchange and high temperature(75℃),as against thetraditionalion exchange technology,the method improves the followingtechnogical condions:the concentration of displacer(EDTA)enhanees from0.015M to 0.100M,linear flow rate of displacer from 0.5-1.0cm/min. to10cm/min.
3.amino acids were determined by ion exchange HPLC with OPA post column derivatization. When the concentration of amino acid were 50~180μmol/L (the tryptophan was 61.5~221.4μmol/L), the correlation coefficients between the peak area of amino acid and the concentration of amino acid were above 0.96.The recoveries of 20 amino acid added were 95.7%~104.2%.
4.The concentration and separation of Np and Pu in TRPO process are studied by anion exchange method.
5.Effect of Different FSB Concentration and First-time Exchange of Total Volume Medium on Proliferation of Bone Marrow Stromal Cells from GFP Transgenic Mouse in vitro
6.The acidic property of sodium montmorillonite changes after its interlayer ions being replaced by various metallic ion exchange and heat treated under different conditions. Its surface acidic property can be evalualed by CVL coloration method. As shown by the results, type and concentration of metallic ions and temperature of heat treatment exercise influence in different degrees.
7.2. Purification of HSP70 — peptide complex: the mixed protein was separated by affinity chromatography on concanavalin A — Sepharose and DEAE—Sephacel exchange chromatography. 3. The qualitative and quantitative analysis of HSP70 — peptide complex: the molecular weight and identity of the HSP70 was confirmed by SDS—PAGE and Western blot, the concentration was measured by the means of Bradford.
8.In the Jianan poetry the image of "the sad wind" is a special image with the bright time characteristic. This kind of image is mainly deep by the emotion, concentration on the exchange of art situation.
9.It is generally believed that CGs produce positive inotropic actions in failure heart via the inhibition of Na+,K+-ATPase activities which results in the elevation of bulk intracellular Na+ concentration([Na+]), and subsequent increase of intracellular Ca2+ concentration ([Ca2+]i) via Na+-Ca2+ exchange, thus increasing the uptake and subsequent release of Ca2+ by the sarcoplasmic reticulum (SR).
10.Very low concentration of Co, Cu, Cd, Ba, Mn, Ni, Pb in water samples at Larsemann Hills and East Antarctic was determined by off line preconentration with chelating cation exchange resin D401 coupled with ICP MS.
