乳酸

As the chitosan is an alkaline polyose, it can be degradated in conjuction with polylactic acid and can suppress that polylactic acid generates pH pulses on environment in degradation process, increasing the cell affinity of the surface of polylactic acid material.

由于壳聚糖是一种碱性多糖，它与聚乳酸同时降解，还可以对聚乳酸降解过程中对环境产生pH脉冲作用起到抑制作用，提高了聚乳酸材料表面的细胞亲和性。

The porously sintered hydroxyapatite and poly oligomer were used to prepare a series porous poly/hydroxyapatide composites as a biodegradable hard tissue repair material, and its physical-chemical properties were studied in this investigation. The used PLLA oligomer, mentioned above, was prepared via acidic hydrolytic reaction.

本研究利用烧结的方法制作多孔性的氢氧基磷灰石烧结体，加入聚乳酸及由高分子量聚乳酸降解的乳酸寡聚物制作成PLLA/HA复合材，以作为硬组织生物可吸收性修补材之用。

The method includes the following steps: getting specific amount of knitted or unknitted natural fiber and dipping the natural fiber in the aqueous solution of silane coupling agent for 1-100min, taking out and drying the natural fiber, thus producing natural fiber with modified surface; then pressing the polylactic acid into sheet in a plate vulcanization machine; disposing 2-10 polylactic acid sheets into a die and arranging one modified natural fiber sheet between every two polylactic acid sheets; pressing and molding the sheets; in this way totally biologically degradable polylactic acid composite material can be made.

该方法为：先取一定量的经过编织或未编织天然纤维，将其浸渍在偶联剂水溶液中1～100分钟后取出，经干燥后得到表面改性的天然纤维。然后，将聚乳酸在平板硫化机中压制成薄板；将2～10片聚乳酸薄板放在模具中，且每2片之间放置1片改性的天然纤维，然后模压成型，得到可完全生物降解聚乳酸复合材料。

Principle:Lactate was dehydrogenated to pyruvate at the action of lactate dehydrogenase,at the same time NAD~+ received H~+ to yield NADH.According to the absorbance variances of NADH at 340 nm,the lactate level in supernatant of platelets was calculated.

原理：乳酸在乳酸脱氢酶作用下脱氢生成丙酮酸，同时NAD~+接受H~+生成NADH，根据NADH在340nm处的吸光度变化来计算血小板上清中乳酸的含量。

GREEN buffered lactic acid L+ is lactic acid buffered with sodium lactate , produced by bio-fermentation .

乐林缓冲乳酸是生物发酵乳酸与乳酸钠缓冲制成的。

Methods and conditions to produce feedstuff using the residue were discussed. The effect of temperature, inoculums size, fermentation time, nitrogen addition amount on the lactic-acid fermentation under the co-action of cellulose and TD175 lactobacillus were studied.

本文研究了玉米秸秆乳酸发酵的条件及影响乳酸产率的主要因素；探讨了乳酸发酵残渣单菌及混菌发酵制饲料的方法及工艺。

Malolactic fermentation is a very important processing technology for deacidificaton in modern winemaking.

苹果酸乳酸发酵是现代葡萄酒酿造工艺中重要的生物降酸手段。MLF是L 苹果酸在乳酸菌的苹果酸乳酸酶催化下转变成L 乳酸的酶促反应过程，该过程没有底物水平的磷酸化，但在MLF过程中苹果酸确实能够刺激细菌的比生长速率，增加细菌生物量。

2The total living bacteria quantity in the fermented feedstuff was close to thecontrol(P＞0.05),but the coliforms and putrefying microbe were inhibited infermented feed by EM.

1EM中的优势菌群为乳酸杆菌，其次是酵母菌；EM发酵饲料中的优势菌也为乳酸杆菌，大肠杆菌、腐败菌受到明显抑制；EM能增加粪便中乳酸杆菌数量，降低沙门氏菌的检出率。

Coli, yeast fungus, Lactobacillus and the Rhizopus oryzae as the examples to introduce the study progresses and results of gene engineering methods in enhancing the L-lactic acid purity and yield in recent years.

以大肠杆菌、酵母菌、乳酸细菌和米根霉等具有代表性的乳酸发酵菌种为例，介绍了基因工程方法在提高L-乳酸产量及纯度等方面的研究进展及取得的成果。

Result: Beneficial effects on nerve conduction speed , fiber diameter, fiber amount and thickness of medullary sheath were also observed in the permeable PLA NGCs.

实验结果：术后三个月聚乳酸导管/神经生长因子微囊组在神经传导速度及形态学中的再生纤维直径、纤维数、纤维密度、髓鞘厚度等均优于聚乳酸导管直接吻合组及聚乳酸导管内注入神经生长因子组；和自体神经移植组的结果基本相似。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。