生物活性的

This research explored the possibility and the biological effects of construction of a electro-bioactive coating on the dental implant surface using electrically conductive polymer-polypyrrole . This paradigm proved to be very powerful in combining the principles of surface engineering with electromagnetic therapy in promoting dental implant osseointegration.

本研究探索了利用PPy构建钛基金属种植体表面电生物活性层的可行性，并研究了其对体外培养成骨细胞生物学特征的影响，为钛基种植体的表面改性和生物活性设计提供了一种新思路。

In this paper,the recent developments,synthetic situation and bioactivity of alicyclic polysulfide s are reviewed comprehensively in order to find a simpler and more effective synthesis method.

脂环多硫化物是一种新型香料，具有浓郁的特征香味和良好的生物活性。为了寻找更简单高效的合成方法，推动此类香料的研究，详尽探讨了其研究现状、合成进展及生物活性

Most of these peptides are amidated at their C-terminals, which is essential for their full activities. The a-amide comes from posttranslational modification that is catalyzed by α-amidase (α-AE or PAM). The amidation reaction is a rate-limiting step in the biosynthesis of regulatory peptides.

大部分活性肽的C-端是酰胺化的，而且α-酰胺基为多肽的完全生物活性所必需；α-酰胺基来自多肽的翻译后加工，由α-酰胺化酶催化完成，是酰胺化多肽生物合成途径中的限述步骤。

C. gigantea is a high biomass, fast growing perennial shrub growing as a weed in the Hainan province of China. It was used as a traditional folk medicine for the treatment of cough, leprosy, and asthma by the people of Li nationality, who are autochthon of Hainan island of China. In our screening for bioactive agents from tropical medicinal plants, the ethanol extract of the roots of C. gigantea showed cytotoxic activity towards human chronic myelogenous leukemia (K562) and human gastric cancer (SGC-7901) cell lines in vitro by MTT method with IC50 values of 9.7 μg/mL and 6.7 μg/mL, respectively.

为了开发热带药用植物资源，从中寻找具有药用价值的生物活性成分，本文采用MTT法对牛角瓜乙醇提取物进行体外活性筛选，结果表明其对K562 及SGC-7901 具有细胞毒活性，IC50值分别为9.7 μg/mL 和 6.7 μg/mL。

METHODS: The myxobacterial bioactive substances were discussed in accordance with their mechanisms.

在对粘细菌产生生物活性物质的特点全面分析的基础上，按生物活性物质的作用机制进行分析讨论。

In this paper,a new method of using cyclic temperature difference for the viability evaluation was proposed,and preliminary experiments were performed to demonstrate the new approach.

本文提出了循环温差法测定生物组织活性的新方法，并进行了初步的实验研究，给出了定量评价生物组织活性的数学关联式。

Machinable bioactive glass-ceramics containing mica and fluorapatite were prepared by high-temperature melting. The glass-ceramics were analyzed by means of X-ray diffractometry, scanning electron microscopy with energy dispersive spectrometer and Fourier transform infrared reflection spectrometry. The bending strength, hardness and fracture toughness of the materials were measured.

摘 要：采用高温熔铸法制备可加工生物活性云母/氟磷灰石玻璃陶瓷；用X射线衍射、扫描电镜和傅里叶变换红外光谱分析等手段对材料的相组成和微观形貌进行研究，测定材料的抗弯强度、硬度和断裂韧性等力学性能；采用体外模拟体液浸泡法测试材料的生物活性。

Machinable bioactive glass-ceramics containing mica and fluorapatite were prepared byhigh-temperature melting. The glass-ceramics were analyzed by means of X-ray diffractometry, scanning electron microscopy with energy dispersive spectrometer and Fourier transform infrared reflection spectrometry. The bending strength, hardness and fracture toughness of the materials were measured.

摘 要：采用高温熔铸法制备可加工生物活性云母/氟磷灰石玻璃陶瓷；用X射线衍射、扫描电镜和傅里叶变换红外光谱分析等手段对材料的相组成和微观形貌进行研究，测定材料的抗弯强度、硬度和断裂韧性等力学性能；采用体外模拟体液浸泡法测试材料的生物活性。

In addition, the thermal expansion coefficient of wollastonite is close to that of Ti alloys. It indicates that wollastonite coating is tightly bonding to Ti alloy substrate.

与生物活性玻璃类似的组成保证了硅灰石具有良好的生物活性；相近的热膨胀系数使硅灰石涂层能与钛合金基体牢固的结合。

Bioflocculants, having good flocculating activity, are the metabolic products of the microorganism, which are safe, non-toxic and can be biodegraded easily.

微生物絮凝剂是一类由微生物产生并分泌到细胞外具有絮凝活性的生物活性物质，具有良好的絮凝沉淀性能，安全、无毒，易于生物降解。

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。