测定

GPS has been widely adapted as the main positioning tool nowadays after development for more than 20 years with a new generation updating. The applications of areas and prospects dimension of GPS have exceeded its original purpose. It has become a very important technical method and solution way in almost every field of transportation, communication, metrology, aerologic and so on.

全球定位系统GPS作为新一代的卫星导航定位系统，经过二十多年的发展，已发展成为一种被广泛采用的系统，它的应用领域和应用前景已远远超出了该系统设计者当初的设想，目前，它在航空、航天、军事、交通、运输、源勘探、通信、气象等几乎所有的领域中，都被作为一项非常重要的技术手段和方法，用来进行导航、定时、定位、地球物理参数测定和大气物理参数测定等。

The diurnal variation of photosynthesis of Lindera aggregata was studied by the LCA-4 Portable Photosynthesis System under natural conditions on clear days of mid-August. The results were as follows.

用LCA-4型便携式光合测定仪；在自然条件下；于8月上旬的晴朗天气对乌药叶片光合作用日进程进行测定。

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持&新疆野苹果可能是栽培苹果祖先种&的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

The aim of this study was to reveal the adaptation response of limestone plants to light and water. The light response curves of limestone plants Alchornea trewioides, Bauhinia championii, Pteroceltis tatarinowii, Sapium rotundi folium were measured with Licor-6400 Photosynthesis Analyzer in Karst area, and parameters of photosynthesis were simulated by non-rectangle hyperbolae function.

为阐明石山植物对光与水分的适应能力，采用Li-6400光合作用测定系统，对岩溶区石山植物红背山麻杆、九龙藤、青檀和圆叶乌柏生长盛期的光响应曲线进行了测定，并利用非直角双曲线模型对4种植物光合作用生理参数进行拟合。

The use of LEDbased portable device for the colorimetric determination of triterpenoid alcohol ketones in Alisma orientalis has been established.

建立了利用便携式小型光谱仪测定中药泽泻中三萜醇酮类化合物总量的比色测定方法。

The HPLC method is simple, accurate, highly selective, and reproducible, thus it can be used as quality control in the preparation of Compound Alpinia katsumadai Mixture.

本测定方法简便可行、重复性好，可用于本制剂中主要有效成分的含量测定。

The determination of cytokinin levels is a primary and basic approach in the cytokinin studies. The Amaranthus betacyanin bioassay was modified for the rapid and convenient determination of cytokinin activity. Meanwhile, the procedures for quantitative analyses of cytokinins by HPLC and ELISA were estabolished, and these gurantee the analyses of cytokinin levels with high precision.

在细胞分裂素的活性测定中，通过改进尾穗苋苋红素合成法建立了一种简便、准确的生物试法，同时还建立了根据物理化学和免疫学原理而测定细胞分裂素的HPLC和ELISA方法，使得细胞分裂素的定量更加准确。

Results: sialidase test combined with Amsel had a high positive rate and coincident rate which hit up to 100%.

结果：唾液酸酶测定与Amsel法行涂片查线索细胞结合，阳性率高，两者互补，诊断符合率高达98%，唾液酸酶测定法是一种可行，可靠的好的检测手段。

Based on the facts of low soil fertility and unbalanced nutrient ratio in Ankou valley ,one soil sample was collected per 2 to 3 hm 2 according to the land use pattern and the relief determinant .

针对安口流域内土壤肥力水平低且养分比例失调的实际状况，按土地利用方式及地形部位每 2～ 3hm2 面积采集一个土壤样品，用常规分析方法测定了土壤有机质、有效氮、有效磷、有效钾、有效铜、有效锌等养分指标，编制了土壤养分丰缺对照表，对各测定项目进行了系统评价，并作了相应的推荐施肥建

The contents of soluble sugar,soluble protein and malondialdehyde were determined by anthrone method,Foiln-hydroxybenzene method,thiobarbituric acid method respectively.

分别采用蒽酮法、Folin-酚法、硫代巴比妥酸法测定可溶性糖、可溶性蛋白质和丙二醛MDA的含量，用电导仪测定幼苗的电解质渗透率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。