稳定性条件

The paper is devoted to the quartic invariant algebraic curves in quadratic system.

本文在给定参数满足一定的条件下，研究了一类二次系统的四次不变代数曲线系统平衡点的稳定性态，并运用Dulac函数法给出了该系统不存在极限环的充分条件，这一研究在同类问题中具有一定的拓展性。

The results showed that, the antibiotic was stable under the condition of high temperature and alkali, but not in acid solution.

结果表明，该菌产生的抗生素在中性和碱性条件下具有极高的热稳定性，但在酸性条件下不稳定。

Simulations show the integrated can achieve the ideal yaw rate with small roll angle and small side slip angle at the center of the gravity under the various running conditions, especially under the critical conditions The handling, stability and active safety are effectively improved by the control system

该系统可大大提高各种转向特性的汽车在各种行驶条件尤其是恶劣条件下的操纵稳定性和主动安全性。

On condition that the nonlinear uncertain function is bounded, based on state observer and controller, we derive a sufficient condition for robust stability independent of delay by the Lyapunov functional theory.

在非线性不确定性满足有界条件下，通过构造增广系统，利用Lyapunov稳定性理论，给出了该不确定性系统基于观测器的鲁棒镇定的充分条件，并给出了相应的状态观测器和鲁棒控制器。

At first,the cobweb model in a differential equation's form is established under the condition of continuous time.

首先，在连续时间的条件下，建立了蛛网模型的微分方程形式；其次，通过分析微分方程模型平衡点的稳定性，得到了蛛网模型稳定的条件；最后给出与微分方程模型相应的经济解释和具体应用。

NSC-7 could degrade 73.6% of rice straw within 14 d. 10 kinds of material were detected in volatile products by gas chromatography mass spectrometry, and they were mainly acetic acid, glycerol, butyric acid, and propanoic acid. NSC-7 could retain stable degrading ability and high cellulase activity after preserved in -80℃ and freeze-drying for four years. It could remain its degrading ability after 90℃ of high temperature treating for 30 min, and resume its degrading ability after subcultured 2 times after 105℃ of high temperature treating for 30 min in autoclave.

NSC-7在14 d的培养过程中，使稻秆分解73.6％；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸； NSC-7在-80℃冷冻和冻干条件下保存4年后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30 min后，仍能够保持分解能力， 105℃处理30 min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

NSC-7 could degrade 73.6% of rice straw within 14 d. 10 kinds of material were detected in volatile products by gas chromatog- raphy mass spectrometry, and they were mainly acetic acid, glycerol, butyric acid, and propanoic acid.

NSC-7在14d的培养过程中，使稻秆分解73.6%；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸；NSC-7在-80℃冷冻和冻干条件下保存4年后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30min后，仍能够保持分解能力，105℃处理30min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

NSC-7 could degrade 73.6％of rice straw within 14d. 10 material were detected in volatile products by gas chromatography mass spectrometry,and it was mainly acetic acid, glycerol, butyric acid, and propanoic acid. NSC-7 could retain stable degrading ability and high cellulase activity after preserved in -80 and freeze℃-drying for four years. It could remain its degrading ability after 90 of high ℃temperature treating for 30min, and resume its degrading ability after subcultured 2 times after 105 ℃of high temperature treating for 30min in autoclave.

NSC-7在14d的培养过程中，使稻秆分解73.6％；用GC-MS测定结果发酵液中检测到10种化合物成分，其中峰值较大的依次为乙酸、甘油、丁酸、丙酸；NSC-7在-80℃冷冻和冻干条件下保存4a后仍具有稳定的秸秆分解能力和纤维素内切酶活性；经90℃高温处理30min后，仍能够保持分解能力，105℃处理30min后转接2次就能恢复分解能力，显示出很高的保存稳定性和热稳定性。

This test of the separation and purification of immunoglobulin, freeze-drying,immunoglobulin under different conditions of stability and the protection of its accession to improve the stability of the effect of the study.

本试验对免疫球蛋白的分离提纯、冷冻干燥、免疫球蛋白在不同条件下的稳定性及加入保护剂对其稳定性改善效果进行了研究。

Research from the stability of the polymer gel system,this paper carried out the foll...

从研究聚合物凝胶体系稳定性出发本文主要开展了以下工作；(1)从聚合物类型(PHPAM、AP-P4和KYPAM-2)、分子量、水解度方面研究了聚合物凝胶体系的成胶性能，实验结果表明，KYPAM-2在60℃、80℃下与乙酸铬交联剂、70℃和90℃下与有机酚醛交联剂形成的凝胶体系30天粘度保留率85%—94%，而AP-P4聚合物在相同条件下形成的凝胶体系30天粘度保留率80%—90%；中、低水解度(15-25%)聚合物形成的凝胶稳定性较好(30天粘度保留率9036-94%)。

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。