生物化学

The mechanism of bioactivity of the glass ceramics containing fluorapatite and fluorophiogopite microcrystals was investigated by using the in vitro and in vivo methods.

1引言生物玻璃、微晶玻璃的生物活性是关系到其植入人体后能否与活骨组织_产生牢固化学结合的关键因素'""。

There are three categories of maturity indicators of organic matter in current petroleum industry to evaluate the degree of thermal evolution for source rocks, including: 1 optical indicators, i.e., vitrinite reflectance, bitumen reflectance, sporopollen color and thermal alteration index, conodont color alteration index, and reflectance of fossil fragments; 2 chemical indicators, i.e., the maximum temperature in pyrolysis of organic matter, methyl phenanthrene indicator, the atomic ratio of H/C, carbon isotope indicator, and biomarker indicators; 3 indicators of spectroscopy, i.e., the free radical concentration of kerogen, the average structural scale of aromatic nucleus of kerogen, and the laser-Raman spectrum of organic carbon.

摘 要：当前常用的有机质成熟度指标包括3大类：1 光学指标，包括镜质体反射率、沥青反射率、孢粉颜色、热变指数(thermal alteration index， TAI)、牙形石色变指数(color alteration index， CAI)和生物碎屑反射率；2 化学指标，包括有机质最大热解峰温度、甲基菲指数(methyl phenanthrene indicator， MPI)、H/C原子比值、碳同位素指标和生物标志物指标；3 谱学指标，包括干酪根的自由基浓度、干酪根芳核平均结构尺寸和有机碳激光拉曼光谱。

Diamond-like carbon has the potential applications in the biomedicine because it possesses high mechanical hardness and low friction coefficient and chemical inertness and biocompatibility.

类金刚石膜具有很高的硬度、很小的摩擦系数、很高的化学稳定性和很好的生物相容性，在生物医学领域中具有巨大的应用价值。

According to the experiment results of degradation in field, degradation mechanism of the biodegradable mulch film can include four stages: the first, the material surface appeared deficiency while the surface area and interstice increased of material in the action of natural environment and microorganism; the second, along with the surface area and interstice of material increased and the gap strengthened, the chemical chain of the high polymer's principal chain broke as a result of the hydrolysis or the enzymatic effect in the action of hydration, causing the molecular weight and mechanics function descended; the third, the molecular of high polymer split the low polymer after its physical mechanical function descended, the material decomposed the fragments, the mass defect intensified; the fourth, the low polymer of fragments form in the natural environment, the microorganism, the biological enzyme became the smaller fragments, thus absorbed by the phagocytes, or further turn into CO2 and H2O due to hydrolysis.

根据田间降解试验结果推测，生物全降解地膜的降解机理可能包括四个阶段：第一，在自然环境、微生物作用下，材料表面出现缺陷，同时表面积增大、空隙增多；第二，随着材料表面积的增大、空隙的增多，吸水性增强，在自水合作用下，高聚物主链由于水解或酶解而使化学链断裂，导致分子量和力学性能下降；第三，在其物理机械性能下降后，高聚物分子链断裂为低聚物分子，材料裂解为碎片状，质量损失加剧；第四，碎片状低聚物在自然环境、微生物、生物酶作用下进一步水解变成尺寸更小的碎片，从而被吞噬细胞吸收，或进一步水解，生成CO2和H2O。

The technological education and expertise of the firm's members include: aerospace engineering, astronautical engineering, biomedical engineering, biotechnology, business methods, chemistry, computer engineering, e-commerce, electrical engineering, materials science, mechanical engineering, medical technologies, medicine, microelectronics, nanotechnology, nuclear engineering, pharmacy, physics, software.

公司员工的技术教育和专业包括：航空和航天工程、天文工程、生物医学工程、生物技术、商业方法、化学、计算机工程、电子商务、电子工程、材料科学、机械工程、医疗技术、医学、微电子学、纳米技术、核技术、制药、物力和软件。

Immunohistochemical staining indicated that Nattokinase positive staining grains were found in the brush-border membrane of epithelial cell from duodenum, jejunal to ileal in the Nattokinase extract group, and they showed most predominant in the jejunum, and there were many nut-brown positive staining grains in kytoplasm of epithelial cell.

利用链霉菌抗生物素蛋白-生物素-过氧化物酶复合物(Streptavidin-biotin-peroxidase complex，SABC)免疫组织化学技术，在国内外，首次对兔口服摄入的纳豆激酶进行肠道吸收定位研究。

It is discoursed that oil slick on its generation, its harm and its development.

文章就海面浮油的产生、危害、发展趋势以及防治技术进行了论述，在海面浮油处理的物理、化学、生物技术中，生物技术具有高效、低费用、无二次污染等优点。

The experimental results further show that the new aerobic biodegradate reactor has the high treatment effect for calcium pantothenate wastewater.

采用蒸馏及好氧生物接触氧化相结合的方法处理泛酸钙含氰高浓度有机废水，其化学需氧量和氰化物的去除率达到99％以上，出水指标达到国家排放标准；同时验证了新型好氧生物接触氧化塔的可靠性。

In this study, aerobic biodegradability of 26 different kinds of dyes was tested, using static flask screening test, Warburg respirometer and semi—continuous activated sludge system; then biodegradability of 22 of the dyes under anaerobic condition was investigated by batch and continuous—flow anaerobic digesters; anaerobic metabolic substances of some dyes were analysed by several methods and the pathway of anaerobic degradation of C.

本文用静置烧瓶筛选试验法、瓦勃氏呼吸仪试验法和半连续活性污泥法对26种不同化学结构类型的染料的好氧生物降解性能进行了测定评价；对其中22种染料用间歇厌氧消化反应器和连续流厌氧反应器进行了厌氧生物降解性能的试验，采用多种仪器对部分染料的厌氧降解产物进行检测，对1种蒽醌染料的厌氧降解途径作了推测。

The results were using fermentation of malic acid——alcohol, adding 10% schizogony yeast No.1 before wine yeast, could reduce 3.61g/l and 49.1% at the average acidity and degrading acid rate of Anli pear juice.

安梨酒的降酸试验中，在工艺调配降酸、化学法降酸和生物法降酸三种方法比较的基础上，认为生物降酸法比较适合。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。