最佳值

After the medium had been decided, we studied the effect of temperature, sucrose concentration and pH value on the yield.

在获得最佳培养条件的基础上，考察温度、蔗糖浓度和pH值对右旋糖酐产量的影响。

Periodic fluid pulsation in aeroplane hydraulic piping could induce fluid-construction vibration and lead to fatigue damage. It is impossible to find the error sensor's optimization location because of the pressure standing wave, and the pulsation attenuation effect is not perfect when adopting pulsation attenuation at single point. For this reason, a distributed active control method of fluid pulsation was presented. To avoid stationary point in all aviation states, several fluid pulsation actuators and error pressure sensors were placed along the piping. The second fluid pulsation produced by actuators can counteract the primary pulsation brought by aviation piston pump and make the mean pulsation of whole piping minimum when adopting adaptive feed- forward control and the filtered-X least mean square algorithm.

针对飞机液压能源管路系统中的周期性流体脉动诱发流固耦合振动，导致管路疲劳损伤的问题，针对管路中存在压力驻波特性，在采用单点消振时寻找误差传感器最佳布局位置困难而引起脉动抑制效果不理想的缺点，提出了一种分布式流体脉动主动控制方法，即沿管路不同位置布置多个主动消振阀和误差压力传感器，在任意飞行阶段，避开压力驻波点，以误差压力传感器的脉动测量值为控制目标，采用一种针对周期脉动主动控制的自适应前馈控制法和多通道自适应滤波－X LMS算法，调整控制器参数，使主动消振器产生的次级脉动与管路中的初始脉动相互抵消，达到整个管路中的平均流体脉动最小的效果。

The optimum conditions of extracting cystine were confirmed, as follows: the waste wool pretreatment conditions are pH10, alkali solution temperature 50 ℃ and dry temperature 80 ℃; the waste wool hydrolysis conditions are hydrochloric acid concentration 32%, acid to hairs ratio 1.8:1, hydrolysis temperature 120 ℃, and hydrolys...

研究了预处理、酸解条件、脱色对羊毛胱氨酸提取量的影响，得出了最佳提取胱氨酸的条件，即在pH值为10、碱液温度50℃、烘干温度80℃预处理后的羊毛，在质量分数32%的盐酸、酸毛比1.8：1、水解温度120℃的条件下水解8h。经检测，按所优化工艺提取的胱氨酸符合标准。

For the FA, the results indicated that the VPD calculation using mean of 24 hourly temperature values as saturation vapor pressure, and wet-bulb depression as actual vapor pressure yielded the lowest error, the least range, and the most frequency with the highest WI. These outcomes were as well as the SIA with the lowest EMSE, R^2 higher than 0.99 and the highest CE.

分析结果显示，以频率分析法而言，各地农业气候分区均呈现，VPD计算式以24个时温度日平均为饱和蒸汽压力，与湿球下陷量为实际蒸汽压力，具误差最少、全距最小、出现频率最多及最高权重指数，性能表现最佳，这样的结果，对照统计指标法之检测评估，同样具最低RMSE、R^2值0.99以上及最大CE，性能表现优於其他所有VPD计算式，两者，结果一致。

The research results are highly reproducible owing to the repeatable micro-model technique.(2) Quantifying the Kr-S-P curves in two-phase flow. The validity and adaptability of multi-phase curves are verified using micro-model testing bed tailored to adequate scale of pores. Results obtained from the P-S micro-model tests generally agree with the threshold values of displacement mechanism offered by researchers using geometric shapes. The hysteresis of .experimental Kr-S curves of numerous two-phase flows are depicted in terms of connectivity and humidification. The P-S and Kr-S curves of two-phase flow are well-derived in conjunction with micro-model test results and empirical van Genuchten model. For the curve expressing the relation between saturation and capillary pressure, experimental results of water-air flow system corresponds to the theoretical data.

2二相流体对微模型实验之Kr-S-P关系：包括以孔颈尺寸比例组成微模型板实验平台去证实多相流流动主要特性曲线正确性与适用性；验证水和空气二相流之P-S微模型实验，与前人以几何形状所推估出来的置换机制门槛值大致吻合；以连通性及润湿性等解释多组二相流体对Kr-S曲线实验之迟滞现象；以微模型实验结果配合van Genuchten特性曲线经验式互推估二相流体对之P-S与Kr-S 曲线，推估结果良好；以比例原则推估多组二相流体於毛细压力-饱和度曲线的结果，显示在水和空气二相流体对为参考流体对时，推估其他组流体对吻合度最佳。

In this study, as a original strain, antagonistic bacterium Ata28 was mutated by UV, UV+LiCl, DES and Microwave irradiation; the very goal of the research is to improve the control efficiency of Ata28 strain against tobacco brown spot and obtain strains advanced both in antagonism and biological characteristics, further provides theoretics and practical experience to the production.

采用紫外线和氯化锂复合诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间10s，15s诱变；通过平板对峙培养，筛选出8个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Ata28，抑菌带最大值达9.7mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Uv1-190、Uv1-199，烟苗经Uv1-190、Uv1-199菌液处理3d后，接种Tbs3的防治效果达51.3％、54.9％，比出发菌株Ata28的防治效果好。

Ata28 strain exhibited marked suppression of Tbs3 strain which is the pathogen of tobacco brown spot on PDA plates, and the Ata28 strain had the good control efficiency of tobacco brown spot.

采用紫外线诱变Ata28菌株时，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间10s，20s，30s诱变；通过平板对峙培养，筛选出15个突变菌株在PDA平板上可明显抑制Tos3的生长，抑菌带高于出发菌株Ata28，抑菌带最大值达9.4 mm；在温室控病中，获得了对烟草赤星病有较好防效的突变菌株Uv-126，烟苗经Uv-126菌液处理3d后接种Tos3的防治效果达52.2％，比出发菌株Ata28的防治效果好。

Ata28 strain was mutated by UV with the most optimum mutant time, including 10, 20, 30s, that was chosen by the trial tests, considering the lethality rate and positive mutation rate of Ata28; it was found that 15 mutant strains were shown antagonism against Tbs3 strain by antagonism test on PDA plate, inhibition zone of mutant strains exceeded the original strain Ata28, and the maximum of inhibition zone reached 9.4mm; the mutant strain Uv-126 was found most effective in tobacco brown spot control and a rate of efficiency control reached 52.2% on tobacco plants three days after bacteria spraying.

采用硫酸二已酯诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间20min，40min，60min诱变；通过平板对峙培养，筛选出17个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Am28，抑菌带最大值达10.5 mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Des-66、Des-50，烟苗经Des-66、Des-50菌液处理3d后，接种Tbs3的防治效果达52.0％、56.6％，比出发菌株Ata28的防治效果好。

The results show that the three-effect concurrent distillation is the best separation technology in response to the objective function of the ratio of multi-effect distillation expenditures to mono-column expenditures.

并以多效精馏与单塔精馏总费用的相对值最低为目标函数，确定分离甲醇－水体系的最佳方案为三效顺流精馏工艺。

Cocos yoghurt. The optimum conditions for liquid fermentation of P. cocos polysaccharides were: 150 rpm, 26℃, initial pH 5.5 in medium, inoculating 6% P. cocos strain at 2 d age, shake culture for 7 d and the content in fermentation liquid of about 6.91 mg/ml.

结果］茯苓多糖最佳液体发酵条件为：26℃，150 r/min，培养基初始pH值5.6，接种6%的菌龄为2 d的茯苓菌，摇瓶振荡培养7 d，发酵液中茯苓多糖含量为6.91 mg/ml。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。