Mark–Houwink constants for polyacrylamide and poly(acrylamide-co-sodium acrylate) in 0.2M Na2SO4 were measured using eight fractionated samples of polyacrylamide and 26 hydrolyzed polyacrylamide samples. The dependence of K and a on the copolymer compositions was found for the range of acrylate ...
[Methods] Using high performance gel permeation chromatography(HPGPC) for determining the Molecular Weight(MW) and Molecular Weight Distribution of Licorice Polysaccharide; TOSOH TSK gel G4000 PWXL was used as column. Mobile phase was 0.7% Na2SO4 aqueous solution at 0.8 m L/min,column temperature...
rhIGF-I alone did not increase the incorporation of L[3H]serine or [35S]Na2SO4 into whole cartilages. LMW-GF + rhIGF-I markedly increased the incorporation of these precursors. rhIGF-I alone stimulated D[3H]glucosamine uptake, and LMW-GF increased the effect of rhIGF-I. These ...
Na2SO4, or by reaction with acid chlorides or anhydrides, e.g. acetyl chloride or acetic anhydride. The use of solvents such as dioxan or haloacetic acids which dissolve the water and swell the product makes removal of water unnecessary when phenoxyethyl chloride is condensed. The ratio of ...
Table 2. Reported chemicals that can activate cytoprotective enzymes and thereby inhibit bone destruction. ChemicalsReferences Nrf2 activator Curcumin [47], [80], [83] EGCG [74], [79], [82] ETGE-peptide [6] Na2SO4 [73] NAC [81], [84] Sulforaphane [74], [78] FOXO Statin [86]...
某同学为了检验家里购买的硫酸铵化肥是否合格,称取了27.5g化肥样品与足量浓烧碱溶液一起加热,产生的氨气用足量的100.0g废硫酸吸收.测得吸收氨气的溶液总质量m与反应时间t的变化如右图所示.已知合格硫酸铵化肥中含氮量不低.20%.所涉及的反应为(NH4)2SO4+2NaOH=Na2SO4+2H2O+2NH3↑;2NH3+H2SO4=(NH4)2SO4...
The dye removal efficiency of lignin-METAC polymer was independent of pH. The dosage of the lignin polymer required for reaching the maximum removal had a linear relationship with the dye concentration. The presence of inorganic salts including NaCl, NaNO3, and Na2SO4 had a marginal effect on...
The combined organic layers were separated and dried over Na2SO4. The solvent was removed and the residue was purified via flash chromatography (petroleum ether/ethyl acetate 5:1) to yield compound 2a (677 mg, 48%) and compound 2b (394 mg, 28%) as yellow solids. 1-(4-Methoxybenzyl)-...
Tris Buffer consisted of 15 mM Tris Buffer consisted of 15 mM H2NC(CH2OH)2 HCl, 140 mM NaCl, 3.25 mM KCl, 1.2 mM CaCl2, 1.25 mM NaH2PO4·H2O, 1.2 mM MgCl2, and 2.0 mM Na2SO4 (Sigma-Aldrich). Electrode fabrication Carbon fiber microelectrodes were fabricated by aspirating a carbon ...
The organic layer was separated, dried (Na2SO4), and evaporated under reduced pressure. The respective crude oximino esters 5e, 5h, 5j, 5k, 5n, and 5o were purified by recrystallization from ethanol. ({[(1E)–1-(1,3-Benzodioxol-5-yl)–3-(1H-imidazol- 1yl)propylidene]amino}oxy)...