نتایج جستجو برای: heat stabilizer
تعداد نتایج: 207639 فیلتر نتایج به سال:
sodium salt of n-acetyl-dl-tryptophan (at) and octanoic acid (caprylic acid ca) individually and in combination were studied as thermal stabilizer with different concentrations in heat treatment of human albumin solution. hplc protein profiles before pasteurization of albumin showed less than 1% polymer. in free stabilizer albumin solution during pasteurization visible clot was formed. but by u...
Sodium salt of N-acetyl-DL-tryptophan (AT) and octanoic acid (caprylic acid CA) individually and in combination were studied as thermal stabilizer with different concentrations in heat treatment of human albumin solution. HPLC protein profiles before pasteurization of albumin showed less than 1% polymer. In free stabilizer albumin solution during pasteurization visible clot was formed. But by u...
Chemical stability in propellants is important issue. In this article chemical and thermal stability for two kinds of double and single base propellants are investigated. In mass loss test in 90 0C, after 18 days mass loss for both samples is no more than 3%. By stabilizer measurement it was evident that remaining stabilizer content in aged samples are more than 10% in relative to fresh samples...
Abstract Heat stabilizers are crucial additives for enhancing the thermal stability of polyvinyl chloride (PVC) during processing. Among various heat available, organic tin compounds have shown remarkable effectiveness. In this study, we investigated use dimethyltin dineodecanoate (DMTDN), dibutyltin (DBTDN), and dioctyltin (DOTDN) as PVC. These were combined with calcium stearate (CaSt 2 ) zin...
Stacks of high temperature superconducting tape, magnetized using pulsed fields, provide a new type of permanent magnet using superconductors. To optimize the trapped field in such stacks, the role of stabilization layers was investigated by pulse magnetizing a 12 mm square stack of 15 tape layers over a temperature range of 15–77 K. The stacks consisted of commercial tape with a silver stabili...
Conductive polyaniline nanoparticles (PANI NPs) are synthesized by oxidation of aniline with persulfate in acid media, in the presence of polymeric stabilizers: polyvinilpyrrolidone (PVP), poly(N-isopropylacrylamide) (PNIPAM), and hydroxylpropylcellulose (HPC). It is observed that the size of the nanoparticles obtained depends on the polymeric stabilizer used, suggesting a mechanism where the a...
A new technology for the synthesis of rare earth stearate and several metal stearates at the same time is described in this paper. The optimum technical conditions for the synthesis of rare earth stearate and different metal stearate at the same time were studied. The results proved there was synergistic effect among rare earth stearate and metal stearate. The complex stabilizer has good heat s...
Heat shock proteins 70 and heat shock proteins 90 (Hsp70/90) have been implicated in many crucial steps of carcinogenesis: stabilizing oncogenic proteins, inhibiting programmed cell death and replicative senescence, induction of tumor angiogenesis, and activation of the invasion and metastasis. Plenty of cancer related proteins have the ability of regulating the expression of Hsp70/90 through h...
The conductor for helical coils of the Large Helical Device consists a Rutherford-type NbTi/Cu cable, pure aluminum stabilizer, and copper sheath. dimensions stabilizer cross-sections are 18.0 mm × 12.5 12.4 5.2 mm, respectively. measured cold-end recovery current in magnetic field parallel to shorter side (B//12.5) is clearly lower than that longer (B//18.0) because difference magnetoresistanc...
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