乳酸

Polylactic acid, a kind of aliphatic polyester, is a bio de gradable polymer with outstanding biocompatibility.

聚乳酸是一种具有良好生物相容性的聚酯类可生物降解材料，近年来在医学领域的应用日益受到重视。

Human umbilical venous endothelial cells were cultured, and were exposed to different concerntrations of HCY with/or not with CuSO4; Cell counting of detached cells were performed with a hematocytometer; the cell survival was monitored by MTT assay and the cellular injury was evaluated by LDH release; Hoechst 33258 staining was used to observe nuclear morphological changes and the apoptosis was measured by DNA agarose gel electrophoresis ;the percentage of apoptosis was quantified by flow cytometry.

体外培养人脐静脉血管内皮细胞，用不同浓度的HCY伴／不伴生理浓度Cu~(2+)与内皮细胞作用；细胞计数板检测脱落细胞率；MTT法及乳酸脱氢酶释放率的测定来衡量细胞的存活与损伤；Hoechst 33258荧光染色观察细胞核形态变化和DNA琼脂糖凝胶电泳检测细胞凋亡，并采用流式细胞术定量测定细胞凋亡率。

Laboratory evaluation consists of hematocrit (hemoconcentration suggests preeclampsia), platelet count, protein excretion, serum creatinine, serum uric acid, serum alanine and aspartate aminotransferase concentrations, and lactic acid dehydrogenase concentration.

实验室评估包括红细胞压积，血小板计数，蛋白排泄，血肌酐，血尿酸，血清丙氨酸氨基转化酶和天门冬氨酸氨基转化酶，和乳酸脱氢酶浓度

The following data were obtained and compared between resistance and responder: white blood cell,neutrophil,hemoglobulin,C-reactive protein,erythrocyte sedimentation rate,albumin,and lactate dehydrogenase.Male patients with decreased albumin may be related with resistance,but they could not be good predictors of resistance.

川崎病患儿发生IVIG耐药的可能危险因素有外周血白细胞、中性粒细胞比例、血红蛋白、C反应蛋白、血沉、血浆白蛋白、乳酸脱氢酶等，分析结果提示血浆白蛋白降低及男性可能与IVIG不敏感川崎病有关，但仅此两项指标尚不能预测IVIG不敏感川崎病的发生。

The biocompatibility of self-designed hydroxyapatite/poly rods was evaluated both in vitro and in vivo including Ames test, micronucleus test, acute and subacute systemic toxicity test, hemolysis test, hemopexis test and long-term muscle and bone implant test.

对自行研制的可吸收羟基磷灰石/聚DL-乳酸复合骨折内固定材料进行了一系列生物相容性实验，包括Ames实验、微核实验、急性和亚急性毒性实验、溶血实验、凝血试验和肌肉、骨内长期植入实验。

The biocompatibility of self-designed hydroxyapatite/poly rods was evaluated both in vitro and in vivo including Ames test, micronucleus test, acute and subacute systemic toxicity test, hemolysis test, hemopexis test and long-term muscle and bone implant test.

对自行研制的可吸收羟基磷灰石/聚DL-乳酸复合骨折瘦身内固定材料进行了一系列生物相容性实验，包括Ames实验、微核实验、急性和亚急性毒性实验、溶血实验、凝血试验和肌肉乙肝、骨内长期植入实验。

These results show that Nisin promoter from Lactococcus lactis NZ9000 could efficiently induce the expression of heterologous protein.

这些结果表明Nisin能有效诱导乳酸乳球菌NZ9000中异源蛋白的表达。

Methods The specimens which were identified as osteosarcoma were cultured primarily in vitro. The surviving cells underwent morphological observation, histochemical staining, isoenzyme pedigree determination, cell cycling analysis, karyotype analysis and heterotransplantation.

采用原代组织块培养法对成骨肉瘤手术标本进行培养，对存活细胞进行形态学观察、组织化学染色、乳酸脱氢酶同工酶谱、细胞周期检查、核型分析、异种移植。

The results show that the hyperthyroidism group has elevated levels of choline, glucose and declined levels of VLDL, LDL, cholesterol, lactate, glycoprotein and alanine in serum samples relative to the healthy group. In urine samples, the hyperthyroidism group show increased levels of glucose, citrate, taurine and creatinine as well as decreased levels of hippurate, trimethylamine-N-oxide, formate and succinate.

结果表明，甲亢组血清中的胆碱、葡萄糖和三甲胺等物质的含量升高，而VLDL，LDL和胆固醇等脂质以及乳酸、糖蛋白和丙氨酸等代谢物的含量下降；甲亢组尿液中的葡萄糖、柠檬酸、牛磺酸以及肌氨酸等代谢物的含量升高，而马尿酸、TMAO、甲酸和琥珀酸等代谢物的含量下降。

Tissue were taken from intestine before and at 2h, 4h, 6h after operation, placed in 10% formalin, reviewed by a histopathologist.: Intestinal ischemia was noted with worsening grades of injury observed with greater ligation times.

结果：随着缺血时间的延长，肠壁的缺血损害程度逐渐加剧。D-乳酸的活性在术后2小时就随着缺血时间的延长，肠壁组织缺血程度的增加而逐渐升高，与手术前相比，P.05。

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。