Objective To assess the efficacy, safety and feasibility of a new biodegradable poly-lactic acid stent in repair of bile duct injury.
目的评价一种新型的可降解聚乳酸支架在胆管损伤胆管修复中的支撑作用和其安全性以及可行性。
Polylactic acid (PLA) is a linear aliphatic polyester produced by poly-condensation of naturally produced lactic acid or by the catalytic ring opening of the lactide group.
聚乳酸(PLA)是一种线性脂肪族聚酯的聚乳酸中自然产生的或由丙交酯开环缩合催化剂组产生。
In this paper, synthesis of poly (lactic acid) and its copolymer, influence factors are introduced, and new polymerization methods are also introduced.
介绍了聚乳酸及其共聚物的合成方法及影响因素，并介绍了几种新的聚合方法。
This paper made a review on the application of poly (lactic acid) and its copolymers in controlled release and organ-targeted release.
本文对聚乳酸及其共聚物在药物控释及靶向方面的研究进行综述和展望。
METHODS the cyclic voltammetry and differential pulse voltammetry were used to study the electrochemical behavior of DA at the poly (isonicotinic acid) film modified electrode.
方法用循环伏安法和示差脉冲伏安法研究DA在聚异烟酸膜修饰电极上的伏安行为。
The preparation, degradation, and cytocompatibility of poly-L-lactic acid (PLLA) scaffold for cartilage tissue engineering were studied in this thesis.
本文以聚- L -乳酸(PLLA)为原料，研究了多孔支架的制备、体外降解和软骨细胞的相容性。
And try an easy method of poly malic acid's determination - spectrometry, but this method needs further researching, so it can be used in determination of poly malic acid.
同时也尝试了一种聚苹果酸简易测定方法——分光光度法，但是这种方法还需要做进一步的研究才有可能适用于聚苹果酸浓度的测定。
The result shows the viscosity-average molecular weight of poly(L-lactic acid) attains to 232,000 synthesized by optimizing the reactive conditions.
结果表明：通过优化反应条件，使得在苯溶剂中合成出的聚L-乳酸的粘均分子量可达到232，000。
The synthesis and modification methods for biodegradable poly(lactic acid) are introduced.
介绍了可降解材料聚乳酸树脂的合成与改性方法。
In this paper, poly (L-lactic acid) was synthesized by indirect method.
本文主要研究采用间接法合成聚l -乳酸。
Conclusions The biodegradable poly-lactic acid stent is effective, safe and feasible in repair of bile duct injury.
结论可降解聚乳酸支架能有效支撑胆管，安全，可行，为胆管损伤的支撑治疗提供了一个新的材料。
This paper studies the average molecular weight of branched chain of poly ( acrylic acid) by viscosity method. The structure of graft copolymer is also measured by IR method.
利用粘度法测定聚丙烯酸支链的平均分子量，红外光谱法分析接枝共聚物的结构。
The heat resistant poly(lactic acid) was studied, the structure and properties were characterized by FTIR, DSC, TG, X-ray diffraction, heat shrinkage and breakage strength.
研究了一种耐热聚乳酸，并对其进行了红外光谱、示差扫描量热分析、热重分析、X-射线衍射、热收缩及断裂强力等测试。
It was pointed out that the industrial production of poly (lactic acid) fiber could be realized by reducing the production cost and developing new spinning process.
指出聚乳酸纤维的工业化关键是降低生产成本，开发新的纺丝成形工艺。
The poly (amic acid) exhibited good solubility in common organic solvents.
该聚酰胺酸在普通有机溶剂中具有良好的可溶性。
Poly L-lactic acid (PLLA), widely used in biomedicine, is natural polymer material made from corn, which is nontoxic, biodegradable and biocompatible with organism like cell.
聚l -乳酸(PLLA)是一种来源于玉米的纯天然高分子材料，无毒副作用、可降解、生物相容性及细胞亲和性好，广泛应用于生物医用材料。
The encapsulation efficiency and drug loading of triptolide-loaded poly (d, L-lactic acid) nanoparticles were analyzed by RP-HPLC and ultracentrifuge method in this study.
本文研究了反相高效液相色谱和超速冷冻离心测定雷公藤甲素聚乳酸纳米粒包封率和载药量的方法。
This review focuses on the properties and applications of the Poly-lactic-acid materials. The prospects of polylactides are also discussed.
主要介绍了聚乳酸类材料的性能及应用，并对其市场前景进行了分析。
Tanning mechanism of poly (methacrylic acid) to pigskin was studied by X-ray diffraction, its tanning results were compared with that tanned with poly (acrylic acid) tanning agents.
用x -射线衍射法研究了聚甲基丙烯酸对猪皮的鞣制机理，并对其与聚丙烯酸鞣剂的鞣制效果进行了比较。
The optimal grafting condition and parameters of poly (acrylic acid) starch graft copolymer were studied, and the structure of the products was verified using IR spectra.
研究淀粉接枝聚丙烯酸共聚物的最佳接枝条件及相关参数，并利用红外光谱对产品的结构进行验证。
The imidization kinetics of two kinds of fluorinated poly(amic-acid) films during the continuous increase of the temperature were investigated using dynamic TG method.
利用动态热重法研究了两种含氟聚酰胺酸薄膜在连续升温过程中的亚胺化反应动力学。
Starting from d, Llactic acid and glycolic acid, biodegradable drug delivery material poly (lactic acid-glycolic acid) (PLGA) was directly synthesized via melt polycondensation.
以d,l乳酸、乙醇酸为原料，通过熔融聚合法直接合成生物降解材料聚乳酸乙醇酸(PLGA)。
Objective to investigate the clinical efficacy of poly lactic acid membrane (PLAM) in the prevention of epidural adhesion after lumbar laminectomy.
目的观察聚乳酸防黏连膜(PLAM)对椎板切除术后预防硬膜外黏连的临床效果。
The imidization kinetics of the fluorinated poly(amic-acid) was studied with the whole imidization temperature range using thermal gravity analysis(TG).
采用动态热重法研究了含氟聚酰胺酸在整个亚胺化反应温度范围内的反应动力学。
Especially in recent years, with the application of the poly L-lactic acid for the new material, the demand quantity of the lactic acid increased greatly.
尤其在近年来，随着环境友好型聚l -乳酸生物新材料开发利用，乳酸需求量不断增加。
This paper reviewed the general situations of synthesis processes and application of poly (lactic acid), and concentracted on the update progress situations on synthesis technology and application.
较全面地介绍了聚乳酸的合成方法和应用现状，重点阐述了聚乳酸的合成技术和应用的最新进展。
Poly(lactic acid) plastics:how far away from the market?
聚乳酸塑料，离市场有多远?。
The distribution of the acid groups may be random, but better results are obtained by introducing poly-acrylic acid blocks.
丙烯酸在聚合物中的分布也许是随机的，但是如果这些丙烯酸在聚合物中是封端排布的话，效果会更好。
The distribution of the acid groups may be random, but better results are obtained by introducing poly-acrylic acid blocks.
丙烯酸在聚合物中的分布也许是随机的，但是如果这些丙烯酸在聚合物中是封端排布的话，效果会更好。
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