phas

Difference of distribution of PHAs accumulating bacteria in various mangrove soils was significant .

不同红树林土壤中PHAs合成菌分布差异明显。

Study on the PHAs Biosynthesis Bacteria in Mangrove Soil

红树林土壤中PHAs合成菌的研究

The Quantitative Analysis of the Polyhydroxyalkanoates ( PHAs ) in Different Proportions

聚羟基脂肪酸酯（PHAs）不同比例组成的定量分析

PHAs synthase genes could be detected using template DNA from mangrove soil after optimizing amplification system .

优化扩增体系后，以土壤DNA为模板扩增得到了目的片断。

The report says that the work of PHAs has been a valuable contribution to the government 's rapid scale-up of ART .

这份报告说，PHA的工作为政府快速扩大ART治疗作出了宝贵的贡献。

Particularly , some η phas from continuous precipitation can be regarded as nucleations starting cellular precipitation .

特别强调的是，某些晶内连续析出的η相也会作为核心使晶内胞状析出得以进行。

The paper introduces characteristics of a biodegradable polymer & polyhydroxyalkanoates ( PHAs ) and its application in denitrification of sewage .

介绍了生物可降解聚合体PHAs（聚羟基脂肪酸酯）的特点及其在污水反硝化脱氮中的应用。

However , PHAs in market are all commercially produced by pure cultures , which bring about high costs and hampered their large-scale application .

然而目前PHA商业化生产都采用纯菌发酵的方式，成本较高，阻碍了PHA的大规模应用。

So , the bridge structure seismic performance evaluation in design phas and the identification of bridge damage and the repairing technology after the earthquake are very significant .

因此，对于设计阶段桥梁结构的抗震性能评估以及地震之后桥梁损伤的迅速鉴定和加固修复技术的研究有着重要意义。

Fermentation of Biodegradable Plastic & PHAs

动胶菌发酵生产可降解塑料PHAs

Polyhydroxyalkanoates ( PHAs ) are the most common examples of biodegradable polyesters .

目前最常见的生物降解材料是聚羟基烷酸酯（PHAs）。

In this article , research advancement on the production of PHAs in transgenic plants and its problems were reviewed , and the solutions were discussed further .

本文综述了利用转基因植物合成PHAs的研究概况和存在问题，进一步探讨了其解决方法。

A method of SDS-GITC-PEG-Resin Adsorption was established for extraction DNA from mangrove soil that suited for PHAs synthase gene PCR amplification .

在对红树林中未能培养PHAs合成菌的研究上，建立了适合PHAs合成酶基因PCR扩增的红树林土壤总DNA的提取方法&SDS-GITC-PEG-树脂吸附法。

Results ① The mean cell numbers on the films of PU , PHAs and PHAs / PU were 196,124 and 160 respectively .

结果①3组薄膜片上细胞平均数分别为（PU）196、（PHAs）124、（PHAs/PU）160。

Introduce that it has great advantage to use microbiological fermentation process to produce transparent hyaluronic acid ( HA ) and polycarboxylate ( PHAs ) products etc.

用微生物发酵法来生产透明质酸（HA）、聚羟基脂肪酸酯（PHAs）等产品具有极大的优越性。

The first one in the family is PHAs , but the most in-depth research is a high crystallinity polymers , named 3-hydroxybutyric acid , PHB .

在PHAs家族中第一个，也是研究最深入的就是具有高结晶性的3-羟基丁酸聚合物，即PHB。

Our Company Passed ISO9001:2000 Quality System Certification , All of our items are accordant with ROHS and PHAS ( SGS ) standard .

我公司巳通过ISO9001：2000国际质量体系认证，公司产品全部通过欧盟ROHS和PHAS指令（环保SGS）。

Polyhydroxyalkanoates ( PHAs ) are a class of polymers , which can be accumulated as internal carbon sources by part microorganisms under adverse circumstances .

聚羟基烷酸酯（PHA）是一类羟基脂肪酸的聚合物，当外界环境较恶劣时，部分微生物可以在体内以内碳源的形式贮存PHA。

Polyhydroxyalkanoates ( PHAs ) are polyesters synthesized by numerous bacteria in sludge as intracellular carbon and energy storage compounds under the condition of unbalance growth .

聚羟基脂肪酸酯（PHAs）是许多污泥微生物在不平衡生长条件下合成的细胞内能量和碳源储藏性物质，是一种新型的可完全生物降解的热塑性塑料。

RESULTS : Chromatography conditions were made with the flow phas double steam water and degassed completely , pH 2.8 ~ 3.0 , detecting voltage 0.6 V , flow speed 0.6 ml / min.

结果：色谱条件以流动相用双蒸水配制，脱气30min，pH2.8～3.0，检测电压0.6V，流速0.6ml/min外标法为理想检测条件。

PHAs are biocompatible and biodegradable and can also possess the similar properties with the petro made plastics , which enables them to substitute the current plastics to reduce solid wastes .

PHA具有生物相容性和可生物降解性，同时根据单体组分的不同还可以具有同石化塑料相类似的多种物理性质，可以代替现行的难降解塑料，以此可缓解环境固体废弃物污染。

PHAs ( polyhydroxyalkanoates ) are bacterial polyesters having the properties of complete biodegradability and biocompatibility , as well as the satisfying physical properties for manufacture , which decide their promising application .

聚羟基脂肪酸酯（polyhydroxyalkanoates，PHAs）因其完全的生物可降解性、良好的物理加工特性以及生物相容性使其应用前途十分广泛。

Most of the bacteria accumulated low yield of PHA , with the percentage of 79.9 % . PHAs accumulating bacteria in mangrove soils were studied on culture-independent , level as well .

在葡萄糖无机盐培养基上，从红树林土壤样品中分离到的大部分PHAs合成菌属于低合成能力的PHAs合成菌，占79.9%。

In the PHAs biosynthesis pathway , PHA synthases are found to be the key enzymes for the determination of most of PHA properties , such as monomer compositions and molecular weights .

在PHA的合成途径中，PHA合成酶是最关键的酶，对PHA的组成和分子量等性质具有决定性的作用。

Methods ① Polyurethane ( PU ), p ( 3HB-co-3HH )( PHAs ) and PHAs / PU polymer blend were smeared on slides to form film respectively . Then human fibroblast cells were seeded on the films and cultured for 3 days .

方法①聚氨酯（PU）、第3代聚烷酸酯[PHAs，分子表达式为p（3HB-co-3HH）]、PHAs/PU共混物分别涂在载波片上制成薄膜，将人成纤维细胞种植其上，培养3天。

Now PHAs research focuses on using plant bioreactor to produce PHAs . This dissertation is mainly to analyze the DNA sequence that included PHA synthesis genes by bioinformatics , to find genes correlative to PHA synthesis from this sequence and to amplify and separate them by PCR .

本论文主要研究实验室拥有的从Pseudomanas菌中克隆的合成PHA的基因组片段，利用生物信息学方法分析其序列特征，从中找出与PHA合成相关的基因，并用PCR方法分离这些基因。