方法研究

Using a technique of insoluble salt precipitation, the permeability of endodermal Casparian bands for Cu2+ was investigated in primary roots of soybean Glycine max L.

采用在根内生成有色铜沉淀的方法研究大豆初生根凯氏带对铜离子的通透性。

Mineral composition and microstructure of fly ash-high cementitious materials were studied by such means as chemical analysis, XRD and SEM.

采用化学成分、X衍射和电子显微镜分析等方法研究了高掺量粉煤灰固结材料的矿物组成及微观结构。

The growth and physiological change of Chlorococcum sp. under different nitrogen concentrations were studied adopting the standard method of algal bioassay.

采用藻类生物测试标准方法研究了不同氮浓度条件下绿球藻Chlorococcum sp。

The present study was designed to elucidate the role of apoE polymorphism in the lithogenesis of cholecystolithiasis and to explore the hereditary pathogenesis of the disease. Polymerase Chain Reaction was used as researching apoE phenotypes and allele frequencies in patients with gallstones (n=87) and in controls (n=50), and the fasting serum lipids of subjects were also measured.

为从分子遗传学水平探讨胆囊结石病的发病机理，采用聚合酶链反应等方法研究了87例胆囊结石患者和50例非结石者的apoE基因表型及等位基因频率，并分析了不同apoE基因表型的胆囊结石患者的血脂质代谢特征。

The responses of Chrysopa pallens Ramber to light stimuli with different intensities were investigated by means of electroretinogram technique and behaviour measurement.

运用视网膜电位(electroretinogram， ERG)技术和行为学方法研究了大草蛉Chrysopa pallens Ramber成虫的光强度反应。

The second part of this dissertation describes some molecular dynamic simulation results on the collisional reaction dynamics of fullerenes and carbon nanotubes.

在本论文的第二部分，介绍了利用分子动力学模拟方法研究富勒烯和碳纳米管的碰撞反应动力学得到的一些结果。

For market conduct, the main use of case study and game analysis is applied to research the collusive, advertising, mergers and product strategies of the corporations of realty industry.

对于市场行为，主要运用案例分析与博弈分析方法研究房地产企业的合谋行为、广告行为、兼并行为与产品策略行为。

In this study, we analyzed 8 rare and endangered animals, including giant panda, Yunnan golden monkey, red panda, Asiatic black bear, rhesus monkey, slow lorries, Chinese pangolin and concolor gibbons from China and adjacent areas.

本文以我国珍稀动物大熊猫、滇金丝猴、小熊猫，亚州黑熊、间蜂猴、恒河猴、中国穿山甲、黑冠长臂猿为材料，采用蛋白和同工酶电泳以及线粒体DNA序列分析（包扩采用非损伤取样以毛发和陈旧皮张样品进行的分析）的方法研究珍稀动物的遗传多样性状况及其同物种濒危的关系以及根据遗传学数据确定保护的基本单元等。

Raman spectrum, UV-Vis spectra, IR, NIR and XPS spectra were used to characterize the material. The result indicates that there is a conjugative effect between MWNT and bromine, which induces the change of electron distribution on the MWNT surface. It increased the car- rier density and the electrical conductivity of MWNT became higher.

通过拉曼光谱，紫外可见光谱，红外吸收光谱，近红外吸收光谱和X光电子能谱等方法研究，结果表明：溴与多壁碳纳米管之间存在共轭作用，使多壁碳纳米管表面的电子云分布发生了变化，导致空穴载流子的产生，增加了载流子浓度，提高了多壁碳纳米管的导电性能。

The structure and stability of all possible isomers of C50X(X=SiH2, PH, S) were investigated by ab initio HF/3-21G calculations. The calculation results indicate that the preferred position for cycloaddition of SiH2, PH, and S on C50 is consistent, i.e. on the C3-C4 and C4-C4 sites of C50, and the resultant most stable cycloaddition isomers are [5,6]-closed and [5,5]-closed structures. The main driving force governing the stability of the C50X(X=SiH2, PH, S) isomers is the strain, or the conjugative effect, or the combination of strain and conjugative effect, depending on the addition positions and the types of the attacked C-C bonds.

用从头算HF/3-21G方法研究了C50的环加成衍生物C50X(X=SiH2， PH， S)所有可能的异构体的结构与稳定性，计算结果表明，SiH2基团、PH基团与S原子在C50上环加成的优先加成位置相同，都为C3-C4类键和C4-C4类键，并且相应形成[5，6]-闭环和[5，5]-闭环结构的最稳定异构体；决定C50X(X=SiH2，PH，S)各异构体稳定性的主要因素，因加成位置以及发生加成反应的C-C键的单双键类型的不同，可能是张力、共轭效应或者二者的共同作用。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。