异戊烯

Regulation of the supply of precursors and expression levels can contribute to the heterologous biosynthesis systems as well.

过度的几个基因的上游，在类异戊二烯生物合成的结果是确定和克服的瓶颈，在这方面的门路。

The basic principles of membrane separation technology for recovering butene and iso-pentane from VOC/ N2 are described, and the influence of operating condition on membrane separation is indicated.

介绍了有机蒸气膜分离的技术进展，阐述了应用膜分离技术从有机蒸气/氮气混和气中分离回收丁烯和异戊烷的基本原理，指出了操作条件对膜回收效果的影响。

By splicing in genes from other bugs, the company was able to engineer synthetic metabolic pathways—ones that do not exist in nature—that enable the bacteria to produce isoprene from the sugars found in plant materials such as sugar cane, corn cobs and switchgrass, a tall-growing variety native to North America.

Genecor的科学家们将其它细菌的基因拼接到大肠杆菌上，从而在大肠杆菌上制造出一种自然界中不存在的代谢物合成途径。它使细菌能从植物材料中的糖分生产出异戊二烯——这些含有糖类的植物包括甘蔗、玉米芯，还有原产于北美洲的高个儿品种柳枝稷。

Because of its structure, the length of the different isoprenoid side chain can form different coenzyme Q.

因其结构中，类异戊二烯侧链的长度不同，可形成不同的辅酶Q。

Linear solvation energy relation was firstly introduced in the paper, and the method and step of gaining the special parameters of solvent and solute were introduced in detail, and these special parameters were used to selection and optimization of extractive agent in extractive distillation. The model of predicting activity coefficient at infinite dilution was established by linear solvation energy relation. By the above theory, several candidate solvents were selected to separate C5 fraction, and by experiment of vapor-liquid phase equilibrium at atmosphere pressure, the mixture of N-methyl-pyrrolidone including 4% water was used extractive agent of separating C5 fraction. Then binary vapor-liquid phase equilibrium of the some compound in C5 fraction and N-methyl-pyrolidone were determined at atmosphere pressure and correlated by NRTL equation. Isoprene being objective compound, experiments were operated in the laboratory-scale column; the processes were simulated by RadFrac model in ASPEN PLUS. And by the combination of experiment and simulation, the new process of separation of C5 was established.

本文首先对线性溶剂化能关系进行了分析介绍，也介绍了采用溶剂化能关系得到溶质溶剂特性参数的方法步骤，并将这些参数用于萃取精馏萃取剂的选择与优化；也通过线性溶剂化能关系式建立无限稀释活度系数预测模型，取得了一定的预测精度；将通过上述方法初选的溶剂进行了常压汽液平衡的测定研究，通过实验研究选定含水4%的N-甲基吡咯烷酮溶液做为C5分离的萃取剂，测定了大量N-甲基吡咯烷酮与C5组分的二元平衡数据，并进行关联计算；以异戊二烯为目标产物在实验室规模的精馏塔内进行了C5分离的实验研究，取得大量塔内数据；通过选用合适的热力学模型，采用ASPEN中RadFrac模块对分离过程进行模拟研究，通过实验与模拟相结合，建立了C5分离的新工艺，为将来的工业化打下了坚实的基础。

According to people who had moustaches, inhaling the air component quantitative analysis and found that the air sucked into the presence of dozens of hazardous substances, including phenol, toluene, acetone, isoamyl asked diene, and other carcinogens,, Who had moustaches, who inhaled the air pollution index, is 4.2 times that of ordinary air.

据对留有胡子的人吸入的空气成分进行定量分析，发现吸进的空气中含有几十种有害物质，其中包括酚、甲苯、丙酮、异戊问二烯等多种致癌物，留有胡子的人吸入的空气污染指数，是普通空气的4.2倍。

Table 1 medical packaging materials, containers, scope of pharmaceutical packaging materials, containers, in the form of the name preparation notes plastic bottle kalidehydroandrogropholidi = 50ml material with PP, LDPE Infusion bags, kalidehydroandrogropholidi = 50ml material is PVC, polyalkene glass infusion bottle 50ml clorsulon = injection bottle kalidehydroandrogropholidi 50ml, kalidehydroandrogropholidi = 50ml-molded, control of glass bottle kalidehydroandrogropholidi kalidehydroandrogropholidi 50ml kalidehydroandrogropholidi 50ml ampule medical plastic bottle of tablets, capsules, tablets, colour.10pills glass ampoules, pills and capsules, syrup, oral solution, nanosuspensions, immunoembolization, tincture, linimentum, lotio hard PVC medicinal Tablet and capsule-plastic blister packaging PVC/PE/PVDC medicinal compound hard Tablet and capsule-plastic blister packaging Composite PVC/PVDC medicinal Tablet and capsule hard-plastic blister packaging cold metal forming hard medicinal compound tablets, capsules, suppository materials have nylon/aluminium/PVC double aluminum packaging Tablet and capsule PVC/hard LDPE medicinal compound tablets, capsules, suppository glass bottle ciinincal ciinincal ciinincal plastic bottle medicinal ciinincal medicinal eardrops plastic bottle eardrops medicinal nasal drops plastic bottle nose drops for external use liquid medicinal plastic bottle tincture, linimentum, lotio koufuye of medicinal plastic bottle syrup, oral solution, nanosuspensions, immunoembolization glass control oral bottle syrup, oral solution, nanosuspensions, immunoembolization packaging for medicine bag laminating film, puivis bletillae, feian and Tablet foil Tablet and capsule of unguentum Al fighting、smoke aluminium pipe, oculentum, puivis bletillae, Tin aerosolon, nabulization materials have aluminum, plastic valve pyritionate, nabulization stopple kalidehydroandrogropholidi 50ml, 50ml clorsulon = material bromide, CIIR synthesis of oprene 50ml clorsulon = gasket aluminium caps combination Cap koufuye falchion, kalidehydroandrogropholidi 50ml, 50ml prestrain kalidehydroandrogropholidi = potting needle kalidehydroandrogropholidi 50ml desiccant tablets, capsules, pills and aluminium bottles vinpocetione polyethylene film and bag vinpocetione b, package management and standards on the management of the drug packaging mainly has two modes: a mode of government management, such as Singapore, Indonesia adopted a market access system, United States, Canada, the European Union through the implementation of the medicine on the packaging of the strict management, that is, the drug registration, declare to use medical packaging of related materials; Government departments on the packaging manufacturer production system to carry out spot checks.

表1 药品包装材料、容器适用的范围药用包装材料、容器名称制剂形式备注塑料输液瓶注射剂≥50ml 材料有PP、LDPE 输液膜、袋注射剂≥50ml 材料有PVC、聚烯烃玻璃输液瓶注射剂≥50ml 冻干注射剂瓶注射剂0ml、注射剂≥50ml 模制、管制玻璃注射剂瓶注射剂0ml 安瓿注射剂0ml 口服固体药用塑料瓶片剂、胶囊、丸剂玻璃药瓶片剂、胶囊、丸剂、糖浆剂、口服溶液剂、混悬剂、乳剂、酊剂、搽剂、洗剂 PVC药用硬片片剂、胶囊铝塑泡罩包装 PVC/PE/PVDC药用复合硬片片剂、胶囊铝塑泡罩包装 PVC/PVDC药用复合硬片片剂、胶囊铝塑泡罩包装冷冲压成型药用复合硬片片剂、胶囊、栓剂材料有尼龙/铝/聚氯乙烯双铝包装片剂、胶囊 PVC/LDPE药用复合硬片片剂、胶囊、栓剂玻璃滴眼剂瓶滴眼剂药用滴眼剂塑料瓶滴眼剂药用滴耳剂塑料瓶滴耳剂药用滴鼻剂塑料瓶滴鼻剂外用液体药用塑料瓶酊剂、搽剂、洗剂口服液体药用塑料瓶糖浆剂、口服溶液剂、混悬剂、乳剂玻璃管制口服液瓶糖浆剂、口服溶液剂、混悬剂、乳剂药品包装用复合膜、袋散剂、颗粒剂、片剂药品包装用铝箔片剂、胶囊铝管、铝塑管软膏、眼膏剂、散剂、罐气雾剂、喷雾剂材料有铝、塑料阀门气雾剂、喷雾剂胶塞注射剂0ml、注射剂≥50ml 材料有溴化、氯化丁基橡胶合成聚异戊二烯垫片注射剂≥50ml 铝盖、铝塑组合盖口服液、注射剂0ml、注射剂≥50ml 预灌封注射针注射剂0ml 干燥剂片剂、胶囊、丸剂铝瓶原料药聚乙烯膜、袋原料药二、包装管理及标准各国对药品包装的管理主要有两种模式：一种模式是政府管理，如新加坡、印度尼西亚采取市场准入制的方式，美国、加拿大、欧盟通过对药品的管理实施对药品包装的严格管理即在药品注册时，申报所使用药品包装的相关材料；政府部门对药品包装生产企业的生产体系进行现场检查。

RESULTS: The total GKB yields were enhanced 69%, 13.8%and 11.4%compared with the control by adding 100 mg.L-1 of isoprene and low concentrations (10 and 50 mg.L-1) of geraniol in the medium, respectively.

结果：于培养基中添加100 mg.L-1异戊二烯及低浓度(10 mg.L-1，50 mg.L-1)的牛儿醇能提高GKB的产量，分别比对照增加了69%，13.8%和11.4%。

The properties of single-chain and pauci-chain polystyrene microspheres and recent results on the electron microscopy and selected area electron diffraction of single-chain monocrystals of polyethylene oxide, isotactic polystyrene, cis-1, 4-polybutadiene and guttapercha are presented and discussed.

介绍和讨论了单链和寡链聚苯乙烯玻璃体微球的性质以及聚环氧乙烷、全同立构聚苯乙烯、顺-1， 4-聚丁二稀、反-1， 4-聚异戊二烯单链单晶电子显微镜和选区电子衍射观察的最新结果。

By the cultivation of Hevea brasiliensis in Brazil, harvesting of the latex obtained, the basic chemical composition of cis - polyisoprene.

由种植的巴西三叶橡胶树割取的胶乳制得，基本化学成分为顺－聚异戊二烯。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。