查询词典 detection

From sample treatment to data analysis of the detection, 30 minutes is enough to complete the whole detection process, providing a new on site detection method for Brucella.

整个检测过程，从样品处理到数据分析，能够在30分钟内完成，从而实现了布鲁氏菌的现场快速检测，为布鲁氏菌的现场快速检测提供了一种新的方法。

At the same time, combining with the actual condition of delivery pipeline of our country and some prevalent leak detection and location methods, this paper raised a method, which is based on wavelet analysis and negative- pressure-wave to detect and locate the leakage. Jobs in the paper are as follows:As affected by gas density, pressure, specific heat and pipe material, the velocity of negative-pressure-wave improved depending on the energy conservation. At one time, taking the affection of velocity of gas flow, the location formula was modified in some degree.When locating the leaks with location formula, the iterative approach algorithm was adopted as a new method to increase the location accuracy level of system.Multi-scale decomposition and reconstruction of wavelet transform is utilized to filter the noise of negative-pressure-wave, which was brought by leakage. With the capacity to detect the signal singularity fast and accurately, wavelet transform was used to catch the break point of pressure signal. The work improved the accuracy of At in location formula, accordingly improved the location accuracy.Wavelet is a suitable tool for signal analysis. The distinct character is that the mother-wavelet is of optional. That means choosing different mother-wavelet will get different analysis result. So we studied how to choose mother-wavelet and its scale for signal singularity detection. The method is to choose a wavelet by regularities of the wavelet and the signal.Finally, a plan, which bases on SCADA system for inspection and detection of natural gas leakage, is proposed in the article.

其中，主要进行了以下几方面的工作：针对泄漏产生的负压波在管道中的传播速度受媒介的密度、压力、比热及材质等因素的影响，而非声波在空气中传播的速度，本文利用能量守恒原理，对其进行了修正；考虑到管内气体流速对压力波速的影响，对原始的负压波定位公式进行了一定程度的改进，并在利用定位公式进行泄漏点定位时采用逐步迭代逼近算法，提高了系统的定位精度；利用小波变换的多分辨率分解和重构技术，对采集到的管道发生泄漏时产生的负压波信号进行了降噪处理；并利用小波变换技术对信号奇异点的快速、准确的识别能力，对经上述消噪后的负压波信号进行了奇异点捕捉，精确捕捉的结果提高了定位公式中上下游站点采集到的负压波奇异点的时间差△t的精度，从而进一步提高了定位的精度；考虑到小波变换是一种基波可变的信号分析工具，也就是说，不同的小波基波对信号分析的结果将有很大差别，这势必影响最终的处理结果，因此，我们又对比分析了本课题中小波基及尺度的选择问题，依据规则性系数相似性原理对母小波的选择进行了探索性研究；最后，还提出了基于SCADA的泄漏检测与定位系统的软件开发构想及系统的嵌入方案。

The invention provides a method for producing transgene sugarcane quickly with pmi genes. The method primarily comprises the steps of establishing a mannitose screening system; transformation of a gene gun; acquisition of resistant callus; differentiation and screening of the resistant callus; acquisition and rootage of resistant plantlets; molecule detection of resistant plantlets regenerated and detection of pmi gene expression by the chlorophenol red detection method.

一种利用pmi基因快速获得转基因甘蔗的方法，主要内容包括：甘露糖筛选体系的建立，基因枪转化和抗性愈伤组织的获得，抗性愈伤组织的分化筛选，抗性苗的获得和生根，抗性再生苗的分子检测和氯酚红法检测法检测pmi基因表达。

We establish a new observation model of α-stable distribution for low altitude detection. It is very concernment that fractional lower-order statistics based detection and estimation robust approach for radar target signals, so as to perform optimal detection under constant probability of false alarm.

在不同的海况下，由于雷达波在波峰和波谷间的反射以及在波浪边缘的绕射等复杂电磁现象，使得雷达波不仅频谱形状不规则，而且反射单元的概率分布也超出常规，所以必须高度重视海杂波的特性研究，从中找出有价值的参数。

At present, the locomotive detection equipment is devoid, consociate locomotive model and application condition of auto detection technique on the locomotive detection field, develop the locomotive electric circuit intelligent detector which is suited for most locomotives.

在目前我国机车故障检测设备比较少的情况下，结合我国机车的型号和自动检测技术在机车检测领域中的实际应用状况，研制了适合大多数机车型号的电线路智能检测仪。

After the contradistinctive experiments for the detection of photoelectric image of PCB positioning circlular hole obtained in reality,the detection method proposed in this paper has obvious advantage in the aspects of increasing detection precision,reducing memory space and time.

对实际采集的PCB定位圆孔光电图像进行对比实验，在提高检测精度、降低内存空间、减少计算时间方面，该检测方法的优势明显。标签图像处理同心圆检测 Hough变换点组选取 image processing detection of concentric circles Hough transform point sets selection

As the speed detection control and the accuracy and currentness of the speed detection figures have the direct influences on other various detection and calculation results about the parameter , the system is one of the most important subsystem .

由于速度检测控制的好坏及速度检测值的准确性和实时性直接影响其他各项参数的检测和计算结果，所以该系统是履带式拖拉机综合性能测试系统中必不可少的重要子系统之一，速度检测子系统的研究对于优化履带式拖拉机整机性能设计有着至关重要的作用。

Detection of the virus hard disk boot sector can be divided into the detection of virus and virus detection files.

检测硬盘中的病毒可分成检测引导区型病毒和检测文件型病毒。

In this thesis, a new detection method, Network Intrusion Detection based on Unsupervised Clustering and Chaos Simulated Annealing algorithm, is proposed. NIDCCSA utilizes the ergodic property of chaos to complete the perturbation of states. Therefore, simulated annealing algorithm based on chaos is more likely to converge to the globally optimal solution and enhance the detection rate.

论文中提出使用聚类和混沌模拟退火算法进行网络入侵检测——NIDCCSA算法，NIDCCSA算法充分利用了混沌的遍历性特点进行状态的变换，这样的混沌模拟退火算法更加可能收敛到全局最优解，从而提高检测率。

Based on the previous literatures, the following major innovation works were carried out in this dissertation:(1) The derivatization reaction conditions of ephedrine and pseudoephedrine with sensitive derivation reagent in aqueous system were studied and two new methods were developed for the assay of them by microemulsion electrokinetic chromatography and micellar electrokinetic chromatography with LIF detection. The sensitivity and analysis times were greatly improved compared with the previous reports;(2) A new method of CZE with indirect LIF detection was developed for the simultaneous determination of six coumarin compounds (esculin, esculetin, isofraxidin, genistein, naringin and sophoricoside) with fluorescein as the probe. The proposed method enlarges the application range of LIF detector, and provides new approach for the analysis of certain compounds difficult to derivatize;(3) Based on the above research, an MEKC with indirect LIF detection method for the simultaneous determination of adenine and guanine in DNA extracts from fungus, maize and soybean was established;(4) A new method for the investigation of the complexes formed between human serum albumin and ampicillin sodium under the simulated physiology conditions using laser light scattering technique was developed.

该论文在综述前人工作的基础上，开展了如下未见文献报道的创新性的研究工作：(1)使用灵敏的衍生试剂对麻黄碱和伪麻黄碱在水体系中的衍生反应条件进行了系统研究，建立了微乳电动色谱-激光诱导荧光检测法和胶束电动色谱—激光诱导荧光检测法测定麻黄碱和伪麻黄碱的灵敏分析新方法，与以前的报道相比，灵敏度和分析时间均有很大改善；(2)使用荧光素钠作为背景荧光试剂，建立了同时分析测定六种黄酮类化合物(秦皮甲素、秦皮乙素、异秦皮定、染料木素、柚皮苷和槐角苷)的毛细管区带电泳—间接激光诱导荧光检测新方法，扩大了激光诱导荧光检测的应用范围，对难衍生化合物的分离分析提供了一种新思路和新途径；(3)以荧光素钠作为背景荧光试剂，建立了一种用于同时测定食品提取DNA中的腺嘌呤和鸟嘌呤含量的胶束电动色谱—间接激光诱导荧光检测新方法；(4)用动态和静态激光散射法研究了模拟生理条件下人血清白蛋白与氨比西林钠盐相互作用所形成的复合物，为药物分子与蛋白质的相互作用、药代动力学等的研究提供了一种新思路。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。