回收物

Batch extractive distillation is used to separate azeotrope or the mixture of which the relative volatility is close to 1.0. For it has both advantages of batch distillation and extractive distillation, batch extractive distillation is becoming increasingly important to the production of small scale and high value products like fine chemicals and pharmaceuticals.

间歇萃取精馏是分离共沸物或近沸物的一种方法，由于它结合了间歇和萃取的优点，特别适用于化工、制药、溶剂回收、天然产物提取等产量小，品种多的行业，因此间歇萃取精馏近年来已成为非常活跃的研究和开发领域。

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

Six experimental stages were designed in our procedure, those are:(1) metabolite recovery and tested sample preparation: the metabolites were recovered by Amberlite XAD-2 absorption, followed by MeOH elution and solvent concentration;(2) antioxidant detection and strain selection: samples were quantitatively analyzed by the inhibition effects on formation of lipid peroxides and TBARS to screen the strains able to produce antioxidants. According to the established screening methods, we chose out a strain of actinomycetes, designed as AMBL-029C;(3) antioxidant purification: the fermentation broth was recovered by a series of separation techniques including centrifugation, Amberlite XAD-2 absorption, followed by MeOH elution and a successive TLC purification. The resulting primary purified compound [temperately designed as AMBL-029C-TS] was further analyzed by HPLC to monitor its purity;(4) physical-chemical characteristics: judging from the acid-base fractionation experiments, and the pH and temperature stability tests, the compound was deduced to be a acidic compound with the properties of low polarity and highly pH and temperature stable;(5) mechanism of the antioxidant: in comparison with some other known antioxidants, TS was subjected to investigate its antioxidant mechanism, together with BHT,-tocopherol, as well as two streptomyces metabolites, homogentisic acid and -phenylpyruvic acid, which were previously isolated as the natural antioxidants in our laboratory.

针对本实验目的，我们设计了以下的实验步骤﹔（1）二次代谢物回收及检测样本处理：我们将发酵所得的培养上清液，利用疏水吸附性树酯Amberlite XAD-2吸附回收，并以甲醇溶离及真空减压浓缩脱水等方式处理，以取得提供抗氧化活性筛选之检测样本；（2）抗氧化活性检测及菌种筛选：以「过氧化脂质」和「硫丙二醯尿」的生成量进行定性定量分析以作为抗氧化物质生产菌筛选之用；经此筛选程序，我们选获了具有抗氧化物质高生产力的菌株，命名为AMBL-029C；（3）抗氧化物质的分离纯化：针对生产菌株的发酵回收处理液，以矽胶薄层色层分离法经物质层析纯化后，并以高效能液相层析法(High performance liquid chromatography；HPLC)分析物质可得一初级纯化物质，命名为AMBL-029C-TS；（4）抗氧化物质的物理化学性质分析：由酸碱转溶（acid-base fractionation）实验得知，此抗氧化物质属於中低极性的强酸性物质，对温度（37℃-100℃）及酸碱度（pH3.0-13.0）均表现出高稳定性；（5）在抗氧化机制探讨方面，我们针对数种不同的抗氧化机制进行探讨，即： 1。

The results also suggest that zeolite-encapsulated vanadium picolinic complexes catalyst can prevent the formation of μ-O dimer and possess high stability as compared to homogeneous catalyst. Moreover, heterogeneous catalyst can be recycled.

实验中还发现，均相络合物负载于分子筛中能够有效地抑制μ-O键二聚物的生成，使非均相催化剂具有更高的稳定性，并且能够回收利用。

Primary culture of goat mammary gland cells could be derived by outgrowth of migrating cells from fragment of tissue. Fibroblast and epithelial cells could be pured according to their different sensibility to trypsin. Complex cultures treated by 0.25% trypsin in Hanks' for 5~7min at 37℃, the dispersed cells were mainly fibroblasts,then the rest treated by 0.15% trypsin-0.02% EDTA in Hanks'for 5~8min at 37℃, the majority cells harvested were mammary epithelial cells.

用组织块培养法可获得良好的山羊乳腺细胞原代培养物；培养的山羊乳腺成纤维细胞比上皮细胞对胰蛋白酶更敏感，据此可在传代过程中将二者分离纯化，获得纯细胞系；混合培养物先用0.25%胰蛋白酶在37℃消化5~7min 所收集的细胞主要为成纤维细胞；再加0.15%胰蛋白酶-0.02鞹A 消化液在37℃继续消化5~6min 所回收的细胞绝大多数为上皮细胞，经过2~3 代，即可得到纯化的乳腺上皮细胞系。

Primary culture of goat mammary gland cells could be derived by outgrowth of migrating cells from fragment of tissue. Fibroblast and epithelial cells could be pured according to their different sensibility to trypsin. Complex cultures treated by 0.25% trypsin in Hanks' for 5~7min at 37℃, the dispersed cells were mainly fibroblasts,then the rest treated by 0.15% trypsin-0.02% EDTA in Hanks'for 5~8min at 37℃, the majority cells harvested were mammary epithelial cells.

用组织块培养法可获得良好的山羊乳腺细胞原代培养物；培养的山羊乳腺成纤维细胞比上皮细胞对胰蛋白酶更敏感，据此可在传代过程中将二者分离纯化，获得纯细胞系；混合培养物先用0.25%胰蛋白酶在37℃消化5~7min 所收集的细胞主要为成纤维细胞；再加0.15%胰蛋白酶-0.02%EDTA 消化液在37℃继续消化5~6min 所回收的细胞绝大多数为上皮细胞，经过2~3 代，即可得到纯化的乳腺上皮细胞系。

After peltate yam is water washed, crushed, fermented and acid hydrolyxed, the solid matter and acid water solution are separated via centrifugation, the solid matter is extracted with organic solvent to make saponin extracted into organic phase, the organic phase is back extracted to eliminate other components, the organic solvent is distillation recovered for reuse and precipitation separated saponin is stoved to obtain product.

黄姜经水洗净、粉碎、发酵和加酸水解后，离心分离固体物和酸性水溶液，用一种有机溶剂萃取固体物，皂素被萃入有机相中，经返萃取去除其它成分后，将有机溶剂蒸馏回收，重用，沉淀析出的即为皂素，经烘干即得产品。

Shanghai Elevator recovery operators are engaged in a multi-material recycling Elevator Service Center, is a strictly formal register Elevator recycling companies, is a recovery, sorting, processing, use and sales of multi-service centers, Freight loading recovery, escalator recovery, medical elevator recycling, recycling machine room less elevator, sightseeing elevator recycling, sidewalk staircase, the company is equipped with a professional demolition team responsible for removal of free onsite.

产品描述：上海电梯回收经营公司，是从事多年的一家电梯物资回收服务中心，是一家严格注册的正规电梯回收公司，是集回收、分类、加工、利用、销售为一体的综合服务中心，载物货梯回收、自动扶手电梯回收、医用电梯回收、无机房电梯回收、观光电梯回收、人行道梯，公司配有专业拆除队伍，负责免费上门拆除。

HQX Series Concrete Recycle Equipment is mainly used in clearing, separating and recycling stones, sands and water of waste concrete to Concrete Mixing Plants, Concrete Mixing Truck and Concrete Pump to save expenses for customers such as draining contaminations, clearing away concretions and transports etc.

HQX系列混凝土清洗回收装置主要用于混凝土搅拌站、运输车与输送泵清洗废水、废料的回收处理，将碎石、沙子及水分离回收再利用，为用户节省排污清除固结物及运输等费用。

The effect of Tween 80 addition, enzyme loading and substrate concentration on the re-adsorption of cellulases, which hydrolyzed the corncob after the pretreatment by soaking in aqueous ammonia, was studied in this paper.

论文通过实验方法，考察了重吸附法回收纤维素酶中的一些因素（表面活性剂浓度、加酶量和底物浓度）对回收利用效果的影响规律，得到了较优的工艺参数范围，对于解决纤维素酶的回收利用有一定参考价值。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。