醋酸

The influences of different pretreatment time (1. 5, 2. 0 and 3. 0 h), different fixation time (18.0, 21.0 and 24.0 h) and different dyeing solutions (acetate-carmine and basic fuchsin dyeing solutions) on the sectioning effect of chromosome from root-tip cells of onion were studied and compared.

研究比较了不同的预处理时间(1.5、2.0、3.0 h)、不同固定时间(18.0、21.0、24.0 h)、不同的染液（醋酸洋红染液、碱性品红染液）对洋葱根尖细胞染色体制片效果的影响。

In this paper we combined three chromatographic separation and purification technique such as affinity chromatography, ion exchanger chromatography and hydrophobic interaction chromatography to develope a new technology of stimutaneous extraction of three enzyme from pancreatin. We optimized the technology by studying the methods of purification and assured the technology as: The crude extraction from the dissolution of Pancreatin is directly absorbed on the DEAE gelose fast flow columnEquilibrating buffer is 0.01mol/L NaoAc-HoAc buffer(pH4.5; eluting buffer is 0.2～0.35mol/LNaCl in 0.01mol/LNaoAc-HoAc buffer (pH4.5), and then be eluted by two steps to acquire the peak of kallikrein.The solution which can"t be adsorbed by DEAE gelose fast flow column is adsorbed on affinity chromatographic column Equilibrating buffer is 0.01mol/LTris-HCl buffer(pH7.5, eluting buffer is 0.5mol/LNaCl in 0.01mol/Ltris-HCl buffer(pH7.5)and then be eluted by one step to acquire the peak of trypsin.The solution which can"t be adsorbed by is pretreated with 30%～80%(NH_4)_2SO_4 fractional precipitation, the deposition of the precipitation is dissolved to beabsorbed on phenyl gelose fast flow columnhydrophobic interaction chromatography condition is Equilibrating buffer is lmol/L(NH_4_2SO_4 in 0.01mol/LNaoAc-HoAc buffer(pH4.5), eluting buffer is 0～0.6mol/L(NH_4)_2SO_4 in 0.01mol/LNaoAc-HoAc buffer (pH4.5) and then be eluted by two steps to acquire the peak of chymotrypsin.

本研究考察了各种纯化方法，将离子交换层析、亲和层析和疏水层析三种分离纯化法相结合，建立了激肽释放酶、胰蛋白酶和糜蛋白酶三酶的联产工艺：胰酶用pH4.5醋酸缓冲溶液提取后，粗提液直接上DEAE-琼脂糖快胶柱吸附平衡缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5，洗脱缓冲液：0.01mol／LNaoAc-HoAc缓冲液(pH4.5)含0.2～0.35mol／LNaCl分两步洗脱，收集激肽释放酶的洗脱峰；DEAE-琼脂糖快胶的未吸附液上亲和层析柱分批吸附平衡缓冲液：0.01mol／LTris-HCl缓冲液(pH7.5，洗脱液：0.5mol／LNaCl溶液，一次洗脱，收集胰蛋白酶洗脱峰；最后，亲和层析未吸附液用30％～80％硫酸铵分级盐析处理，沉淀溶解后用上苯基—琼脂糖快胶吸附平衡缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5含1mol／L(NH_4)_2SO_4，洗脱缓冲液：0.01mol／LNaAc-HAc缓冲液(pH4.5)含0～0.6mol／L(NH_4)_2SO_4，分两步洗脱，收集糜蛋白酶的洗脱峰。

Showed that: After being treated with the combined antiseptic germicide of 60% ethanol, 0 5% lactic and 0 2% acetic acid, together with calcium alginate coating, the cooked meat was left unspolled at 28 ℃ for 7 days.

将两种可食性涂膜材料，分别与无毒抑菌剂联合使用，对熟肉制品进行保鲜处理，研究表明，经 60 %乙醇、 0 。5%乳酸和 0 。2 %醋酸复合抑菌剂浸泡，并以海藻酸钠涂膜包被，处理后的熟肉制品在 2 8℃保温 7天不腐败变质，细菌总数及大肠菌群均未检出

Global resin series: Then, infusion of A, B plastic, acrylic Green Red A, B plastic Series: Full transparency A, B series, with globoid plastic infusion series, latex import puzzle series and decorative Wan Nengjiao series, Poly White latex series of vinyl acetate, glass gems, crystal stone, stainless steel dedicated groups of plastic, POLY resin, silicone molds and a variety of industrial plastic.

环球树脂系列：接着、灌注型A、B胶，压克力青红A、B胶系列：全透明A、B系列，灌注用弧面胶系列，进口拼板乳胶系列和装饰万能胶系列，聚醋酸乙烯白乳胶系列，玻璃宝石、水晶石、不锈钢专用无影胶，POLY树脂、模具硅胶及各种工业有胶。

Methods 20 New Zealand rabbits of 6 months were selected and randomly divided into 2 groups.The experimental models were established by injecting gluteus with corticosteroid.

6月龄新西兰大白兔臀肌注射醋酸氢化泼尼松 6周时模型成功，作 HE染色观察骨髓、骨小梁、软骨的变化及透射电镜观察骨、软骨细胞的变化。

The effect of gossypol acetate was possibly concerned with its concentration and the administration time.

醋酸棉酚对雄鼠生殖系统的影响可能与其浓度和药物作用的时间有关。

Objective To investigate the effect of gossypol acetate on reproductive systems of male mice, providing useful data for development of environment?

目的 探索醋酸棉酚对雄鼠生殖系统的影响，为生态灭鼠药的研制提供实验依据。

Objective To investigate the effect of gossypol acetate on reproductive systems of male mice,providing useful data for development of environment-friendly rat poison.

目的探索醋酸棉酚对雄鼠生殖系统的影响，为生态灭鼠药的研制提供实验依据。

Objective To investigate the effect of gossypol acetate on reproductive systems of male mice, providing useful data for development of environmentfriendly rat poison.

目的 探索醋酸棉酚对雄鼠生殖系统的影响，为生态灭鼠药的研制提供实验依据。

Theresults showed that the average pene-tration rate was 62% before adminis-tration of gossypol acetic acid.

结果表明，在口服醋酸棉酚前的9名男性精子对金黄地鼠卵的穿透率平均为62%。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。