乳酸

The human cartilages are composed of chondrocyte and extracellular matrix , the form of chondrocytes are hypertrophy and the quantity are less; the ECM of cartilage are compised of type Ⅱ collagen and proteoglycan. Articular cartilages are all hyaline with little fibers. Trauma and arthritis are the main cause of cartilage injury, the ommilayer injury ofcartilage can be recovered by marrow, but because of without stimulation mechanism, the new tissues are merely fibrocartilages, they can not be coincide with hyaline cartilage in menchanics; the purely damage of articular cartilage can not stimulate chondrocyte to regenerate because of without blood circulation, thus, the plerosis of articular catilage can not depend on the proliferation of local chondrocyte. Ever since, people tried their best to find a way to reconstruct articular cartilage.

中文题名人骨髓基质干细胞成软骨诱导及多孔复合材料作为细胞载体的体外实验研究副题名外文题名 Cartilage induction of human mesenchymal stem cells and experiment on compound porous materials as cells' scaffold in vitro 论文作者刘晓岚导师周江南学科专业外科学研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数68页关键词骨组织工程软骨细胞骨髓基质干细胞壳聚糖高分子外消旋聚乳酸馆藏号BSLW /2003 /R68 /10 造成人体关节软骨损伤的原因主要为创伤和关节炎，关节软骨全层损伤可由于骨髓中间充质干细胞的高速增殖修复，但这种修复由于缺乏相应的刺激机制，只能形成纤维软骨，而不能形成符合关节生理、力学要求的透明软骨；单纯软骨部分损伤软骨组织内无血管，软骨细胞迁移迟缓，无法使损伤区域软骨细胞再生，因此，关节炎及关节创伤后的软骨修复不能依赖于软骨细胞的增殖和迁移。

Gran potentiometric titration was simple, rapid and direct and can be used to determine the effective content in levofloxacin lactate injection.

电位滴定法简便、快速、直接，可以作为乳酸左氧氟沙星注射液有效成分控制的方法。

Methods: Gran potentiometric titration was used to make quantitative analysis of levofloxacin lactate injection.

采用电位滴定法对乳酸左氧氟沙星注射液有效成分进行定量分析。

Plasma levels of diamine oxidase,lactic acid,lipopolysaccharide wer e determined in all subjects preburn and at 30 minutes,3,6,12,24 and 48 hours po stburn,intestinal tissue malondialdehyde and superoxidase dismutase were examined at 48 hours postburn .

分 别于伤前、伤后30分钟及3、6、12、24和48小时测定血浆二胺氧化酶、乳酸、内毒素含量，伤后48小时检测肠组织丙二醛、超氧化物歧化酶含量。

Lactated Ringer's or 7.5% NaCl+6% dextran 70 was given for resuscitation 6h postburn.The volumes and rates of fluid infusion were controlled basically on the urinary output of 1.0ml*kg-1*h-1 and cardiac output of 70%～80% of preburn values.The volume load,+dp/dtmax,-dp/dtmax,CI,DO2 and VO2 were obtained to evaluate the effect of HSD resuscitation. Results The resuscitated volume of HSD was 30.56% less during first 24h postburn and 59.50% less at 4h after resuscitation than LR's.

采用犬35%TBSA Ⅲ度烧伤模型，伤后6 h分别用乳酸林格液及HSD进行复苏，并以每h尿量为1.0ml/kg及心输出量为伤前值的70%～80%来调整输液速度及输液量，观察HSD在复苏中容量负荷、左心室等容收缩期最大压力变化速率及左心室舒张期压力下降最大变化速率、心脏指数、氧供给(DO2)及氧消耗(VO2)等的变化。

The volumes and rates of fluid infusion were controlled basically on the urinary output of 1.0ml*kg-1*h-1 and cardiac output of 70%～80% of preburn values.The volume load,+dp/dtmax,-dp/dtmax,CI,DO2 and VO2 were obtained to evaluate the effect of HSD resuscitation. Results The resuscitated volume of HSD was 30.56% less during first 24h postburn and 59.50% less at 4h after resuscitation than LR's.

采用犬35%TBSA Ⅲ度烧伤模型，伤后6 h分别用乳酸林格液及HSD进行复苏，并以每h尿量为1.0ml/kg及心输出量为伤前值的70%～80%来调整输液速度及输液量，观察HSD在复苏中容量负荷、左心室等容收缩期最大压力变化速率及左心室舒张期压力下降最大变化速率、心脏指数、氧供给(DO2)及氧消耗(VO2)等的变化。

Some of the significant parameters that can be manipulated are the temperature of fermentation, pumping over or punching down the cap, the choice of fermentation vessel (small volume open-top fermenters, versus large tanks, versus rotary fermenters), the use of prefermentation cold maceration, and malolactic in barrel—and this list is far from complete.

一些可被操作的有效参数是发酵温度，泵送或酒盖穿孔，发酵容器选择（体积小，开顶发酵的选择，或大容器，或旋转发酵），用冷浸渍先发酵，及桶内苹果乳酸发酵---这列表远没有完成。

It is observed by in situ stain that LDH(1-5)… nNAD+ can probabl y enter the nucleopore and bind specifically with the gene that encodes itself.

摘 要：原位染色发现，LDH(1-5)…nNAD+(LDH：乳酸脱氢酶，NAD+：氢化型辅酶I)可以进入核孔，可能与自己编码基因特异结合。

The results indicated that lactic acid level higher than 60 and 10mg/mL could inhibit the growth of Propionibacterium acne and Staphylococcus epidermidis, individually, while no inhibition was found for other components.

对於痤疮改善，乳酸於浓度为60mg/mL及10mg/mL分别对痤疮杆菌及表皮葡萄球菌产生抑制能力，相较於此二株菌对酸环境及抗生素耐受性之不同，或许可供治疗炎性痤疮之参考。

All cheese results from a lactic acid fermentation of milk, which results in coagulation of milk prote in s and formation of a curd.

所有的干酪都是由乳的发酵产生的，乳酸使乳蛋白凝结并形成凝块。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。