查询词典 ascertain

Objective: To ascertain the feasibility of detecting p53 gene mutations for early diagnosis of lung cancer using the samples from fibroptic bronchoscopic examination.

摘 要：目的：探讨纤支镜检查标本的p53基因突变检测用于肺癌早期诊断的可行性。

Now, the imposex status in females of Thais clavigera and Cantharus cecillei in 17 sites was investigated to evaluate the organotin contamination along Xiamen Bay during 2006 and 2007. The four indices including incidence of imposex, relative penis size index, vas deferens sequences index and sex ratio index were used comprehensively to assess the imposex status in order to ascertain the extent of organotin bioavailability in Xiamen Bay.

调查研究了厦门海域岩相海岸带疣荔枝螺和甲虫螺的性畸变情况，通过生物学指标IOI、RPSI、VDSI及SRI综合评价其性畸变发展程度，间接指示厦门周边海域的有机锡污染程度。

In order to ascertain the worst section under various load cases, this paper studies and analyses the stress distribution on the hole edge of the circular hole castellated beams under loads acting.

研究分析了圆形孔蜂窝梁在荷载作用下孔周边的应力分布，确定了在各种荷载状态下的最不利截面。

The paper studies AM and DAC as monomer, copolymerize a new type of cationic polymer flocculants through aqueous solution polymerization, inverse emulsion polymerization and inverse microemulsion polymerization, then studies how to improve solid content by aqueous solution polymerization, ascertain the system and kinetics of inverseemulsion polymerization and technological conditions.

本论文探讨了以AM与DAC为单体，通过水溶液聚合、反相乳液聚合、反相微乳液聚合得到新型阳离子高分子絮凝剂，研究了如何提高水溶液聚合的固含量，反相乳液聚合体系的确定、动力学研究及其工艺条件等影响因素。

Analyzing the changing rule of reaction time under road lighting level of different lighting sources can ascertain the luminance contrast coefficients of different lighting sources to high pressure sodium lamp, then appropriate lighting source can be selected based on these coefficients during road lighting designing, road lighting could achieve the aim of safely, quickly, cozily run and energy saving.

分析不同光源在道路照明水平下的反应时间变化规律，可以确定不同光源对高压钠灯的亮度对比系数。在进行道路照明设计时，就能选择合适的照明光源，使道路照明进一步达到安全、快速、舒适和节能的目的。

Fluorescence in situ hybridization and double FISH experiments were carried out to ascertain the chromosomal distribution patterns of the 45S and 5S ribosomal DNAs in the three species of Cucurbitaceae.

首次利用荧光原位杂交和双色荧光原位杂交技术对45S和5S rDNA在南瓜、丝瓜、冬瓜的有丝分裂中期染色体上进行了物理定位分析。

The authors also point out a limitation of their study is that they did not have adequate data to ascertain the effects of medications on the course of the C difficile infections (and presumably that includes data about the use of probiotic supplements to try to prevent C diff in the first place).

作者还指出，限制他们的研究是说，他们没有足够的数据，以确定影响药物对过程中的c艰难感染（和推测，其中包括对数据的使用益生菌补充剂设法防止c差异在第一地点交代问题）。

Under the guidance of DPRIF integrating strategy, we set up an integreted SOFM-SVM model. Then we analyzed and optimized the model from the aspects of operating mechanism, data interface and function expandedness. The PCA method was introduced to reduce dimensionality and extract features, then to strengthen the clustering explanation; defined a CMI index, to ascertain the most effective or the best clustering number; A new Anti-NO algorithm was proposed to recognize and to filter the suspecious data in the sample; The medium result of SVM model was used to extract the borderline datas between two classified groups. This research compensated for the achievements of data recognition including pattern data, noises data and borderline data.

在DPRIF整合策略指导下构建了一个整合的SOFM-SVM模型，对该模型从运作机制、数据接口、功能扩展几个方面进行分析和改进：引入PCA方法进行数据降维和特征提取，用以加强聚类解释；结合统计聚类中的聚类误差概念定义一个聚类数有效性指标，利用SOFM算法中间结果进行指标求解，以筛选出有效或最佳聚类数；提出一种新的噪声识别算法用于对样本中的异常数据进行甄别和过滤；利用SVM模型的中间结果提取分类边界数据；进一步充实了包括模式类、噪声集和边界在内的模式识别成果。

Materials and Methods: Campare gasless hand-assisted laparoscopic surgery, carbon dioxide pneumoperitoneum laparoscopic surgery and operation on Cholecystectomy, colorectal resections, according to the study of operation time, expense in hospital, number of days, pathologic type, extension of radical cure, and analysis of the blood lymphocytes, immune function of erythrocyte, we could ascertain the application value of gasless hand-assisted laparoscopic surgery.

材料与方法：对比研究非气腹手助腹腔镜手术、CO_2气腹腹腔镜手术及开腹手术，从早期的胆囊切除手术的临床应用过渡到结直肠癌根治手术，分别从手术时间、住院费用、住院天数、病理分型、根治范围等进行对比研究，然后从人体外周血淋巴细胞、红细胞等免疫功能方面作进一步分析，以确定非气腹手助腹腔镜手术在临床中的应用价值。

Also, there is no formula can be used to calculate errors of these parameters.Based on above reasons, the purposes of the research are to build a reliable geochronological framework of Paleozoic granitoid in study area, to distinguish their genetic types and tectonic settings, and to analyses their orogenic response; to derive a set of formulas for calculating errors of the paramers mentioned above; to ascertain if North Qaidam belongs to North China Block or Yangtze Block.

基于上述存在的问题，本项研究的目的是：建立研究区古生代花岗岩类精确的年代学格架，判别其成因类型和构造环境，分析其造山响应：推演出一套适用于Sr、Nd同位素初始比值和Nd同位素模式年龄等重要示踪参数误差计算的公式；确定柴北缘地区大地构造属性(华北板块还是扬子板块？)。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。