取样

The fresh chicken feces were obtained from different age 18 healthy chicken, and were not detectedchlortetracycline. The mixture standard solution of CTC and OTC was added in fresh chicken feces at the concentration of 0.5, 1.0 and 4.0ug/ml respectively. The chicken feces were divided to two groups,one were put in the incubator under photophobic condition; another were under the natural illumination.Samples were collected after 0, 0.5, 1, 2, 3, 5, 7, 9, 12 and 15 days, The concentration of chicken feceswas determined by HPLC. According to the theory of degradation kinetics, we fitted the changed trendof concentrations in chicken feces under different time and studied the degradation characteristics ofchlortetracycline in chicken feces.

选取不同日龄健康鸡18只，实验期新鲜鸡粪，，经检测不含四环素类药物，然后加入金霉素标准液，使得各样品中制得的相应药品的浓度为0.5ug／mL、1.0ug／mL、4.0ug／mL，分为两个实验组，第1组放入培养箱中避光黑暗条件下；第2组置于室外自然光下，定时取样，取样时间为0、0.5、1、2、3、5、7、9、12和15d，鸡粪中药物的浓度用本实验建立的高效液相色谱法测定，根据药物降解动力学原理，对鸡粪中药物的浓度随时间的变化趋势进行曲线拟合，研究金霉素在环境鸡粪中的降解动态规律。

When 20% accessions were selected, Mahalanobis distance and Ward's method using stepwise clustering combining with preferred sampling can construct a most reprehensive core collection and was the most suitable method for constructing M. sieversii core collection.

本研究显示，当取样比例为20%时，采用马氏距离，利用离差平法和法进行多次聚类，结合优先取样策略构建的核心种质最有代表性，是构建新疆野苹果的最佳的方法。

Concentration of terephthalic acid was determined by high-performance liquid-phase chromatography.

通过特制的取样装置取样后用高效液相色谱测定对苯二甲酸的溶解度。

The undraped technician's console was sampled in each case as a positive control and an additional 25 C-arm drapes were swabbed immediately after they were applied to the C-arm unit in order to obtain negative controls.

在没有使用帷幕覆盖的悬臂处取样作为阳性对照组，并且再使用25个帷幕，在将它们罩上C形臂透视机后立即取样作为阴性对照组。

Parameter values at the unsampled points in the well are calculated using the Artificial Neural Networks . This can improve the precision and provide more reliable information than other methods such as regression.

利用神经网络技术对井筒未取样点的储层参数进行了求解，提高了未取样点储层参数值的计算精度，为储层非均质性的分形地质统计学研究提供了较为可靠的基础资料。

The specimens of the automatic sampler have automatizes the sampling of flowing flour and made no influence on the inherent quality of the sampled grain.

设计出的样机实现了流动面粉、大米取样自动化，所取样品不影响其固有质量，具有代表性，样机性能良好，符合国家标准&流动粮食取样&要求。

A new method that calibrates the broadband sampling oscilloscope by using Agilent 86100 broadband sampling oscilloscope s was discussed in this paper.

采用了一种利用Agilent86100宽带取样示波器实现对其他宽带取样示波器校准的方法。

The ultrasound apparatus is EUB8500, maked by Hitachi, ultrasound probe islinear array probe, 7.5-13.0MHz. After we hocused rats and fixuped them, weexamined rats with probe and forced gently. We controled the strength which keeped3 always and adjust the size of frame, and then observed the color within the frameand blue is electropositive.

将大鼠腹腔麻醉、固定，在超声仪下观察，手持探头轻轻加压，根据仪器指示，使压力始终控制在3左右，调整取样框大小，观察取样框内的颜色变化，蓝色为阳性。

The kittening behavior of female Amur tigersin captivity were observed by scanning sampling and all-occurrence sampling methods from the year of 1999 to 2003, which included 3 571 times in the whole 194 373 seconds by 22 tigers in the whole observation.

在黑龙江东北虎林园中，采用扫描取样法和所有事件取样法对半散放东北虎的产仔行为进行了连续5年（1999—2003）的观察。共观测产仔东北虎22头次，观察时间累计194 373秒，观察到各类行为共计3 571次。

The influencing effects of grain production systems on the population of second generation of cotton bollworm in cotton were studied. The multi-harvest system provided cotton a good protection against cotton bollworm due to the corn plants in this system strongly attracted cotton bollworm adults when they were ovipositing, therefore reduced the density of cotton bollworm in cotton, compared with ton-grain system..

转Bt基因抗虫棉对棉田节肢动物多样性的影响用吸虫器取样和捕虫网取样两种方法，研究了转基因抗虫棉和化学防治对棉田节肢动物多样性的影响，发现转Bt基因棉棉田与非转基因常规棉棉田棉花害虫、自然天敌和中性节肢动物亚群落没有显著差异，而化学防治可以使各亚群落的个体数量、物种数量、多样性指数发生剧烈变化。

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。