查询词典 investigated

The oxidation mechanism of synephrine was also investigated;(2) The electrochemical behavior of twelve flavonoids (quercetin, morin, fisetin, luteolin, isorhamnetin, myricetin, hyperoside, quercitrin, puerarin, farrerol, naringenin and hesperidin) was investigated. The method for the determination of flavonoids was developed by using different pulse voltammetry, and the detection limit was in the range of 10-7~10-9 mol/L. This method has been successfully employed to determine the total amount of flavonoids in pericarpium citri reticulatae and quercetin in the spiked human blood plasma samples.

2研究了槲皮素、桑色素、漆黄素、木犀草素、异鼠李素、杨梅素、金丝桃甙、槲皮甙、葛根素、杜鹃素、柚皮甙元和橙皮甙等12种黄酮类化合物在玻碳电极上的电化学氧化行为，建立了测定黄酮类化合物的微分脉冲伏安法，检测限可达10~(-7)～10~(-9) mol/L，并用DPV法测定了陈皮中总黄酮含量和模拟血清中的槲皮素，结果较为满意。

A prediction model has been proposed to deal with threshold voltage shift as a function of 1MeV neutron flux and gate oxide thickness, and to deal with room-temperature annealing of threshold voltage shift induced-by 〓Coγ as a function of electric field and gate oxide thickness. The commonness and individuality of MOS device degradation between hot-carrier effect and ionizing radiation were investigated. The dependence of substrate current, gate current and threshold voltage shift due to hot-carrier on gate oxide thickness were simulated with MEDICI-2D simulator. The photocurrents of PN junction and bipolar transistor were studied. Their transient responses on varied bias voltages, pulse durations and absorbed doses were simulated. The influences of NPN base width on base and collector photocurrents were investigated. We also studied 1MeV neutron displacement damage in PN junction, and calculated reverse current leakage under the neutron flux of 2. 67×10〓 per square centimeter. 3 The study of nondestructive screening method for MOS radiation tolerance A theoretical and experimental study of nondestructive screening methods for radiation tolerance of nMOS and pMOS were firstly fulfilled. We determined the informative parameters pertinent to the method and proposed how to deal with experimental data and verify obtained results statistically, as well as make the required steps for nondestructive screening. Based on the experimental data of 180 samples of discrete pMOS devices, the relation between sample quantity and correlation coefficient, screening equation, and other significant results were obtained from the threshold voltage shifts of pre-and post-irradiation samples.

二、分立器件电离和位移辐射损伤响应研究在国内首次开展了电离辐射引起的氧化层阈值电压漂移和退火理论研究，编程计算了1MeV中子引起的MOS器件阈值电压漂移与中子通量及栅氧厚度的关系，计算了〓Coγ光子引起的阈值电压漂移及退火的时效曲线与纵向电场和栅氧厚度的关系等，对评估MOS型集成电路电离损伤和加固方法研究，以及论文中开展的MOSFETs无损筛选方法研究奠定了基础；分析了MOS器件热载流子损伤效应与辐射电离损伤效应之间的异同性，利用二维模拟软件MEDICI-2D模拟了衬底电流和栅电流，在不同栅氧厚度下随栅压的变化曲线，计算了热载流子效应造成的阈值电压漂移，研究结果对当前存在的以热载流子效应研究取代电离辐射损伤实验研究的设想，具有重要的参考价值；开展了PN结和双极晶体管电离光电流研究，计算了不同偏压、不同辐射脉宽和不同吸收剂量下PN结光电流的瞬时响应，计算了不同辐射脉宽下NPN晶体管基极电流和收集极电流的瞬时响应，以及基区宽度对NPN晶体管光电流的影响，研究结果对双极器件抗电离辐射损伤响应及加固方法研究具有重要意义；在国内首次开展了器件位移损伤的理论研究，分析了辐射产生的缺陷对电性能的影响，计算了注量为2.67×10〓cm〓的1MeV中子产生的缺陷对PN结反向电流的影响。

Results About 80.4% of the investigated schools, in which the principals took main responsibility of cafeteria regarding to hygiene and health issue; 90.2% of the investigated schools held the hygiene licences; 45.9% schools had unclean surroundings, and 52.5% lacked required sanitary equipment; 41.0% mixed uncooked foods, semimanufactured foods and cooked foods together.

结果 80.4%的学校实行食品卫生校长负责制，90.2%的学校持有有效卫生许可证；45.9%的学校食堂内外环境不整洁，52.5%的学校无有效"三防"设施；41.0 %的学校没有做到生食、半成品及熟食分开存放。

Toxic effects of twelve pesticides（abamectin, endosulfan, diflubenzuron, danitol, tricyclazole, fluroxypyr, imazalil, tebuconazole, sulfapyridine, sulfamethoxazole, sulfamethazine and sulfadiazine）at low concentration（0.01mg·L-1） on the development of sea urchinembryos were investigated in this work, and the correlation between n-octanol/water partition coefficientand relative lethality rate was investigated.

为了研究低浓度下农药对海胆胚胎的毒性影响，以及正辛醇/水分配系数与致死率的关系，实验研究了12种常见农药（阿维菌素、硫丹、除虫脲、甲氰菊酯、三环唑、使它隆、抑霉唑、戊唑醇、磺胺吡啶、磺胺甲噁唑、磺胺二甲嘧啶和磺胺嘧啶）在低浓度（0.01mg.L-1）下对光棘球海胆胚胎发育的急性毒性影响。

Their micrographs, structure, properties and applications have been investigated by Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, cyclic voltammetry, chronoamperometry and polarization method, etc. The main points of this dissertation are summarized as follows:(1) Nafion - thionine ion-pair as dispersant and second catalyst was introduced into the preparation of Pt catalyst for methanol electrooxidation and the resulted catalyst supported on carbon was investigated by electrochemical methods.

本论文主要研究有机化合物(染料、Nafion、脂肪胺、芳胺等)对DAFC电催化剂或载体的改性，通过傅立叶变换红外光谱、扫描电子显微镜、透射电子显微镜、X射线能量散射谱、循环伏安法、电化学阻抗、计时-电流法、Tafel极化曲线等分析测试技术，对电催化剂、电极的形貌、结构、物理化学性质等进行了详细研究。

Then, the application of MCM-22 in OATS process was investigated. It was found out that with SAR increasing, thiophen conversion first increased and reached maximum at SAR of 75 (98.3%), and then reduced. A postulation was raised that the alkylation reaction mainly occurred at the external surface of MCM-22 zeoltie. The application of MCM-22 in ABLPG process was also investigated.

考察了MCM-22在模拟FCC汽油烷基化脱硫方面的应用，研究表明，随着硅铝比的增加，其噻吩烷基化活性在硅铝比为75时达到最大(98.3%)，硅铝比继续增加，活性则不断降低，提出了噻吩烷基化过程主要发生在分子筛外表面的观点。

Based on above results, the fermentation medium and cultivation conditions were investigated and the uniform design method was used in the optimization of fermentation medium. The techniques of fed-batch culture were also investigated in this paper, with this techniques acarbose fermentation titre increased from 1416 μg/ml to 2700 μg/ml, basically reached the level of industrial production.

在此基础上，又对发酵培养基的组成及发酵条件等方面进行考察，并采用均匀设计的方法对发酵培养基的组成进行了优化；对补料等发酵工艺进行了考察，使发酵单位由原来的1416μg／ml提高到2700μg／ml，基本上达到了工业化发酵的水平。

We Investigated the species of diseases and insect pests, species of natural enemies, distribution and dominant species in export vegetable bases in Shandong Province. Dynamics of main diseases and insect pests were studied.2. We investigated the main control technologies for diseases and insect pests, types and application methods of pesticides.3. Effects of crop varieties, fertilities and cultivation on diseases and insect pests, production and pesticide residues were examined.4. Control effects and application technologies of frequency trembler grid lamps, greenhouse ozone machine and insect-proof net were tested.5. By research, seven biological preparations and twelve chemical pesticides with high activity, low toxicity and low residue were screened.

主要结果如下：1查清了山东省出口蔬菜基地蔬菜病虫害发生种类，天敌种类、分布、并评价上风种；探明了主要病虫发生消长规律。2查清了山东省出口蔬菜基地目前病虫害防治的主要应用技术、施药种类及主要施药方式。3明确了作物品种、肥力、栽培方式等农业措施对病虫发生、产量和农残的影响。4明确了频振式杀虫灯、温室病害臭氧防治机、防虫网等物理措施防治效果及其应用技术。5通过实验，筛选出7种生物制剂和12种安全有效低毒低残留化学农药品种。

On the other hand, with the purpose of fuzzy feature extraction and fuzzy classification device design, the undulatory property of maximum and minimum scattering power corresponding respectively to the maximum and minimum eigen-polarization has been investigated in frequency domain. Furthermore, the anisotropy polarization degree of target, which is determined by both maximum and minimum scattering power of target, has been studied; meanwhile, the dynamic changing characteristic of eigen-polarization on Poincare polarization sphere has been investigated by means of the conception of polarization frequency stability, the research result shows that PSD value has a big jump near π, forming a sharp pulse, and different target has their individual distribution property of PSD pulse.

另外，围绕目标模糊特征提取及模糊分类器的设计，研究了目标最大、最小本征极化所对应的目标最大、最小散射能量随观测频率的起伏特性，考察了由目标最大、最小散射能量共同决定的目标的各向异性极化程度；同时，采用极化频率稳定度的概念，研究了本征极化在Poincare极化球面上的动态变化特性，在最大、最小散射能量相等的频率点上，PSD曲线呈现为幅度接近π值的尖锐脉冲，反映了目标极化散射结构对这一频率跳变极为敏感，但不同目标的这种PSD曲线特征又有很大的不同。

On the basis of the former results, Miscibility of unseparated reaction solution with varied resins were investigated by means of co-solvent method and the glossiness of the film method. The miscibility of 344# acrylic resin with the mixture was better than others, when the ratio of the mixture to 344# acrylic resin was one to ten, the miscibility attained best, and the glossiness of the film was 100 percent.The effect of miscibility and molecular weight on delaminating rate were investigated by the co-solvent method.

在聚马来酸醉溶解性能、相容性测定的基础上，通过共溶剂法、溶液涂膜法和溶解度参数法，考察了反应液不分离直接和不同树脂复配的情况。344#短油度醇酸树脂和接枝物的相容性较好，在接枝物：短油度醇酸树脂=1：10时，相容性达到最好，涂膜光泽值达到100%。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了