稳定性

In orde to obtain system optimization in high efficiency production and operation safety, the microcosmic problem of goaf treatment was brought into the creative design of mining method and the synergism of two problems was studied. Firstly, in view of the occurrence characteristics and mining conditions of catacalstic ore section of orebody No. 105 in Gaofeng mine in Guangxi province, considering the adaptability to different scale goafs in the ore section, based on mining environment reconstructing idea and continuous mining mode, a new mining method (mining environment reconstructing non-pillar sublevel-strip continuous mining method) was put forward. Then, some repr, esentative goafs were selected and their stabilities were calculated by discrete element method on the basis of differences of goaf scale, surrounding conditions and situ stress field. At last, the mining layout was adjusted on the basis of goafs stability analysis and the goafs were adjusted as a part of cutting engineering, blasting space or stope, so as to determine all kinds of goafs treatment schemes.

摘 要：为在生产高效和作业安全上取得系统整体最优，将碎裂矿段的空区处理微观问题纳入采矿方法创新设计宏观问题中，开展2种问题的协同研究：首先，针对广西高峰矿105号矿体碎裂矿段的赋存特点和开采技术条件，考虑对各种规模空区适应性，基于采矿环境再造和连续采矿理论，提出采矿环境再造无底柱分段分条连续采矿法；然后，根据采空区规模、围岩状况和原岩应力场等条件的差异，在所有采空区中选择具有代表性的空区，运用离散元程序对其稳定性进行计算分析；最后，在稳定性分析的基础上，灵活调整开采布局，将采空区调整为部分切割工程、自由爆破空间或采场，从而确定出各种规模空区的处理方案。

While, in order to analyze and assess the change of frozen soil environment, the classification of the thermal thaw-erosion sensibility, the thermal stability and the surface landscape stability of frozen soil is also proposed, which is coordinated with the mean annual ground temperature and freezing-thawing hazards analysis.

为便于评价和分析冻土环境的变化，本文还提出了冻土热融蚀敏感性、热稳定性和地表景观稳定性的划分方法，并使之与冻土年平均地温及冻融灾害相适应。

However, the relationships among thermal thaw-erosion sensibility, thermal stability, surface landscape stability, freezing-thawing process, mean annual ground temperature and ground temperature at permafrost table after asphalt pavement constructed are analyzed.

同时分析了沥青路面下，热融蚀敏感性、热稳定性和地表景观稳定性与冻融过程、年平均地温、多年冻土顶板温度之间的关系。

According to measured data of ground temperature along QXH, the relationships among thermal thaw-erosion sensibility, freezing-thawing process, seasonally thawing depth and permafrost ground temperature, among permafrost temperature, mean annual ground temperature and seasonally thaw depth and among surface landscape stability, freezing-thawing hazards and their forming possibility are systemically analyzed.

通过青藏公路沿线实测资料，分析了冻土热融蚀敏感性与冻融过程、季节融化深度及多年冻土顶板温度关系；冻土热稳定性与多年冻土顶板温度、年平均地温及季节融化深度的关系；地表景观稳定性与冻融灾害之间的关系及产生的可能性。

Through comparing these stability lobes, it can be find that the milling stability is increased with the increment of helix angle and normal rake angle.

通过对不同参数下稳定性图的研究，发现随着螺旋角和法向前角的增加，铣削的稳定性逐渐增加。

The experiment results showed that the potential of reversible hydrogen electrode, acting as the reference electrode of DMFC, decreased with increasing degree of electrolyte humidification.It was found that the potential stability of RHE was mainly determined by the stability of its surface state.

结果表明：在可逆氢电极作为参比电极的DMFC中，RHE的电位随电解质润湿程度的增加而降低，其电位的稳定性主要取决于其表面状态的稳定性。

Characteristic ● high accuracy, good stability ● 2 line working mode, 4～20mA signal output ● sensitive component and circuit board are in solid construction, rigid vibration-proof ● excellent interference-proof, good thermal drift;● explosion-proof enclosure structure, weather-proof ● most outstanding corrosion-proof, ensure best utility reliability ● light construction, simple reasonable, no bracket required, no horizontal mounting required, available mounting at any position on pipeline.

特点● 精度高，稳定性好。●二线制工作方式，4～20mA 信号输出。●敏感部件及线路板是全固体结构，坚固抗振。●抗干扰能力强，温度稳定性好；●防爆壳体结构，可全天候使用。●具有最优良的防腐性能，保证最好的防腐性价比。●结构轻巧，简单合理，无须支架，无须水平安装，可直接任意位置安装管道上。

To improve the stability of Arcjet discharge plasma in low current and high voltage mode, research on the demand of output characteristics of Arcjet Power Conditioning Unit was conducted. In this paper, based on PWM invertors and current mode control, using MOSFET as the main power device, an Arcjet Power Conditioning Unit was developed. Through adding a closed loop feedback circuit of output voltage, it can make the output characteristics of PCU be positive resistance to ensure the stability of Arcjet discharge plasma. The experiment indicates that this PCU can make Arcjet engine work at high voltage mode (100 V, 10 A) and ensure the stability of arcjet discharge plasma. Finally, it provides the experimental data of Arcjet when working.

为了解决小电流、高电压下电弧火箭等离子体的稳定性问题，研究了电弧火箭发动机对电源调理单元的输出特性要求，基于逆变电源脉宽调制技术与峰值电流型控制原理，以MOSFET为主功率器件，研制了一台电弧火箭电源调理单元，给出了Arcjet工作时的实验数据，通过增加PCU输出电压的闭环反馈电路，可以使PCU的输出外特性呈现正阻性，保证电弧的稳定燃烧，实验结果表明，该电源调理单元能使电弧火箭发动机达到高电压工作模式(100V， 10A)，保持电弧工作的稳定性。

the 160 women judoists are tested for mental fatigue and personality tests, and the paper tries to reveal their situation of mental fatigue, personality characteristics, and the relationship between them.it is analyzed that chinese elite judoists have no severe mental fatigue; judoists' negative evaluation on emotional/physical exhaustion and sport increase significantly one week before competition than two months; among personality factors, excitability predicts the decrease of achievement and emotional/physical exhaustion reliably on negative; the stability predicts sport on negative; tension predicts emotional/physical exhaustion on positive; adaption and anxiety in dimension personality predicts in positive both in the decrease of achievement and emotional/physical exhaustion and internal extraversion does them in negative; health personality in applied dimension personality predicts in negative in the decrease of achievement, emotional/physical exhaustion and negative evaluation of sport when mental fatigue, stability and sensitivity predicts the decrease of achievement in negative; only internal extraversion in dimension personality predicts the decrease of achievement and emotional/physical exhaustion in positive.

摘 要：以160名女子柔道运动员为被试，进行运动员心理疲劳以及人格测试，并尝试揭示女子柔道运动员的心理疲劳状况、人格特征以及二者之间的关系。分析得出：我国优秀柔道运动员心理疲劳程度并不严重；运动员在临赛前一个星期较赛前二个月情绪/体力耗竭以及运动的负评价显著提高；人格因素中的兴奋性对成就感的降低以及情绪/体力耗竭两维度均有可靠的负向预测作用；稳定性对运动的负评价维度具有可靠的负向预测作用；紧张性对情绪/体力耗竭有可靠正向预测作用；次元人格中适应与焦虑对成就感的降低以及情绪/体力耗竭均有可靠正向预测作用，内外向性对成就感的降低、情绪/体力耗竭以及运动负评价都有可靠负向预测作用。应用性次元人格中健康者的人格对运动员心理疲劳的对成就感的降低、情绪/体力耗竭以及运动负评价均有可靠的负向预测作用；稳定性、敏感性对临赛前成就感的降低维度的变化有可靠的负向预测作用；次元人格中只有内外向性对临赛前成就感的降低以及情绪/体力耗竭维度的变化有可靠的正向预测作用。

It also requires less load capability of high-voltage pulse power supply, and allows using avalanche transistor or MOS transistor to replace expensive krytron and unstable spark gap. That has simplified the whole system and improved reliability, stability and flexibility.

降低了对脉冲高压驱动电源负载能力的要求，允许用雪崩管或MOS管代替极其昂贵的冷阴极管和稳定性差的高压火花隙，提高了可靠性和稳定性，简化了系统，增加了灵活性。

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。