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By means of mycelium growth rate, cup plate method and organize method, the antimicrobial activity of bioassay was studied. The stability of the fermentation broths in different conditions was measured.

采用菌丝生长速率法、管碟法和活体组织法测定发酵液的抑菌活性,在不同条件下测定发酵液的稳定性,捷克溶剂系统纸层析法鉴别发酵液中抗生素类型。

Through the research of stability of the fermentation broths of actinomycete strain HJ1-2 to heat, acid. alkali and light, it had a stable activity to heat, acid and UV, but unstable to alkali.

发酵液的稳定性测定结果表明,发酵液对热、酸和紫外线均较稳定,发酵液在800℃处理后抑菌活性开始下降,发酵液在pH3~9条件下抑菌活性稳定。

The sample synthesized with starting Li: Mn: C ratio of 5:4:2 followed by carbonizing at 300 ℃ and calcin at 750 ℃ for 12 h shows good electrochemical performance and cycling stability.

结果表明,以Li:Mn:C摩尔比为5:4:2,300℃恒温碳化后于750℃下焙烧12h为合成o-LiMnO2样品的最佳条件;所得样品具有良好的电化学性能和循环稳定性。

Furthermore, a conjecture about the stability of the multi-adding-point error model is presented and some corollaries of the conjecture are proved.

摘要提出多综合点误差模型及其孤立部分传递函数的概念,得到了所有孤立部分传递函数都正实的充分必要条件,以此为基础,给出了关于系统稳定性充分条件的一个猜想,并证明了猜想的一些推论。

The decocting condition is very important to the quality control of decoction.

煎煮条件对黄连解毒汤中各有效成分的溶出率及稳定性具有不同程度的影响。

The article mainly studied impact of carbon dioxide dissolved and degassed in raw milk on physical property and the stability,and got the suitable carbon dioxide supplementation.

在实验室条件下研究了添加CO2的原料乳在脱气前后的物理性质和稳定性,以确定适宜的CO2添加量。

Influence of deposing condition on the grain size, crystal structure and surface properties of nano-TiO_2 was investigated; the existing position and action of TiO_2 in oil/water system was also studied. Results of photographs show that nano-TiO_2 can enter the oil/water interface and well dispersed, a solid film is formed and well stability.

3采用溶胶-凝胶法及掺杂调制技术制备了纳米TiO_2光催化剂,考察不同的热处理条件对二氧化钛(TiO_2)纳米粒子的晶粒尺寸、晶体结构、表面性质的影响,并研究了纳米TiO_2在油/水体系中的形态与存在形式,显微图像观察结果表明,TiO_2纳米粉可以进入油/水界面,在油/水体系中具有较好的分散性能和界面性质,形成一层固体膜,并且具有很强的稳定性。

A commutation error is then considered in addition to the conventional residual error to generate the innovative residual error. Such an error is applied into cost functions to derive finite impulse response and infinite impulse response filter-based adaptive algorithms for ANC applications, referred to as FxRLS/CE and FuRLS/FRE+CE algorithms, respectively. Convergence analyses based on Lyapunov stability criteria for time-varying discrete-time systems can be carried out for the FxLMS/CE, FxRLS/CE and FuRLS/ FRE+CE algorithms to ensure stability. Computer simulations and experiments demonstrate that the innovative residual error-based adaptive algorithms can free the restriction of the slow-adaptation assumption in the conventional ANC approaches.

本文中也定义一交换误差并且加入到传统残留误差行形成新残留误差来改善适应性演算法的收敛速度,使用新残留误差推导出了有限脉冲响应滤波器与无限脉冲响应滤波器之适应演算法的新适应性演算法分别为: FxLMS/CE、 FxRLS/CE 和 FuRLS/FRE+CE 演算法,并且以离散时间的 Lyapunov 稳定性准则来证明演算法的收敛性,电脑模拟与实验也显示新演算法免除以往滤波器的参数必须缓慢更新的条件。

The accelerated stability experiment indicated the shelf life of lyophilized SPIO was about two years.

在40℃及RH75%条件下的稳定性加速实验预计制剂的有效期可达二年。

By investigating the performances and chemical stabilities of three anode catalysts, namely, Pt, MoS2 and composite metal sulfide (MoS2/NiS) in the condition of electrochemical oxidation of hydrogen sulfide, it is indicated that MoS2 and MoS2+NiS exhibit better catalytic activity than Pt, and that, at a temperature more than 450℃, MoS2 itself sublimes, while the composite catalyst MoS2/NiS containing both Mo and transition metal Ni remains stable.

考察了3种阳极催化剂Pt、MoS2及复合金属硫化物(MoS2/NiS)电化学氧化硫化氢的性能和在硫化氢环境下的化学稳定性,发现MoS2和复合MoS2/NiS催化剂比Pt具有更好的催化活性,但MoS2在温度超过450℃时会升华,而含有Mo和过渡金属Ni的复合MoS2/NiS催化剂在操作条件下很稳定。

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