可再生的

Administration of NGF may treat the spinal cord and periphery nerve injured and improve the function of damage nerve.

神经生长因子是最先发现和被证实的细胞生长调节因子，NGF在神经细胞的增殖，分裂和轴突的生长、递质的合成及细胞的凋亡等阶段均起着重要作用，NGF对中枢和周围神经的损伤均有保护和促进恢复的作用，尤其是NGF促进神经细胞的再生，给予NGF可减轻和改善对神经元的损害和治疗外伤引起的脊髓和周围神经损伤。

Firstly, phenyliodine diacetate was immobilized to the 2% cross-linked polystyrene or the liner polystyrene resin. The more iodine the resin had, the lower conversion to phenyliodine diacetate. We made our endeavor to extend the range of useful application of polystyrene supported phenyliodine diacetate in organic synthesis:(1) the reagent was used as an effective reagent of carbonyl regeneration from oximes and semicarbazones of ketones.(2) the reagent was also applied to the synthesis of 1, 3, 4-oxadiazoles, 1, 3-disubstituted-2-pyrazoline, 2-arylbenzoxazole from aldehyde N-acylhydrazones, aldehyde hydoazones and phenolic Schiff's bases respectively.

首先，我们以2％交联的聚苯乙烯和线性的聚苯乙烯树脂为载体，制备了聚合物负载的二醋酸碘苯，通过研究发现：(1)聚苯乙烯二醋酸碘苯是酮肟、缩氨脲有效的去保护试剂，不仅芳香酮，脂肪酮和α，β不饱和酮的肟、缩氨脲也能顺利转化为相应的酮，实现酮基的再生；(2)我们还利用此试剂，分别与醛的N-酰基苯、N-酰基苯腙及邻羟基芳亚胺反应，在温和的条件下发生成环反应，以良好的产率生成1，3，4-噁二唑、吡唑啉和二取代苯并噁唑等杂环化合物；(3)聚苯乙烯二醋酸碘苯还可有效地将邻羟基芳酮的酰腙经氧化、重排成1，2-二酰基苯。

The company is a technology research and development-oriented modern enterprises, and scientific research institutions at home and abroad over a broad operational cooperation, the introduction of foreign advanced technology company's technology is also a conventional business, silver, as a non-renewable resources is now very scarce, Experts said the silver mining can be only 10 years of reserves, to find a substitute for silver is imminent, I replace Secretary silver products are in preparation....

本公司是一家以科技研发为主的现代化企业，与国内外多家科研机构有广泛业务合作，引进国外先进科技技术也是公司的一项常规业务，银作为一种不可再生资源现已相当匮乏，专家称银的可开采只有10年的储量，寻找银的代替品是迫在眉睫，我司银代替产品正在筹建中。。。。

From the viewpoint of supply chain,the basic request of continuous development is transferring from the single and open circle of "resources-produce-consume-abandon" to the closed and feedback supply chain of "resources-produce-consume-recycle".

从供应链的角度，可持续发展的基本要求就是由&资源—生产—消费—废弃&的单向开环供应链到&资源—生产—消费-再生资源&闭环反馈式供应链的转化，基于废旧产品再制造的闭环供应链问题近几年引起学者的广泛重视。

Second, procedures of effective protoplasts fusion and U.V. irradiation or heat treatment protoplasts fusion were developed. Equal protoplast suspensions (containing about 108/ml protoplasts) of each strain were mixed and washed by centrifugation, then the pellets were resuspended in PEG4000 solution (35%) at 37癈 for 2min.

其次，确定了原生质体融合的基本条件及灭活原生质体融合的条件：等量混合两亲株原生质体或用热灭活的原生质体(＞10~8个／ml)，用35％的PEG4000在37℃处理2min后，稀释，涂布再生，可获得融合率在50％左右的融合子。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。