比较研究

According to a thorough comparison and analysis of several classical criticality indexes including Path Criticality Probability, Activity Criticality Probability, Activity 'Cruciality' Index, all these indexes have limitations and pitfalls to some degree. Therefore, Activity Compound Criticality Index is presented as a compound index of ACP and ACI, and on the basis of ACCI, Project Compound Criticality Index, a new index that reflects the criticality of a whole project or subproject is proposed.

首先，对几个经典关键性指标——线路关键概率(Path Criticality Probability， PCP)、工序关键概率(Activity Criticality Probability， ACP)和工序关键指标(Activity Cruciality Index， ACI)——进行比较研究；鉴于各自利弊，提出一个 ACP 与 ACI 的整合指标——工序复合关键指标(Activity Compound Criticality Index，ACCI)，并进一步提出了一个表征项目整体&关键&水平的新指标项目——复合关键指标(Project Compound Criticality Index， PCCI)。

Based on 65 days indoor incubation, potential emissions of three greenhouse gases CO2, CH4, and N2O from pot soils which were under Acmera acuminatisima Schima superba and Cryptocarya concinna seedling and caught in acid rain for 42 months were studied.

通过对土壤65d的室内培养，比较研究了种上荷木、肖蒲桃和黄果厚壳桂幼苗并受模拟酸雨淋洗42月的盆栽土壤温室气体CO2、CH4、N2O排放的差异。

Using large sample DNA of capacity technology, the maize high lysine content of SSR mark analyse technological platform has been established in this paper. The main results are as follows: the five comparing research methods of drawing maize DNA mark have shown that the method of iso- sulphur cyanic acid guanidine drawing maize genome DNA has the superiority of using less medicine, operating sequence more simple , faster, and costs lower , steady and reliable quality of DNA, etc..Utilizing this method , one person can draw 300-400 DNA samples each workday.lt indicates that the method can be used in SSR marker of maize,.

本文从大样本容量的DNA快速提取技术入手，初步建立了玉米高赖氨酸含量的SSR分子标记分析技术平台，获得的主要结果如下：对五种玉米DNA提取方法的比较研究认为，异硫氰酸胍法提取玉米基因组DNA，具有使用药品少、操作步骤简单、快速、成本低、DNA质量稳定可靠等优点，利用该方法，每人每个工作日可以提取300～400个DNA样品，可以在玉米SSR标记分析中应用。

Objective To compare the irradiation protective and inter synergestic effects of E838,WR 2721, Rubia cordifolia , cystamine hydrochloride and ethinyl estradiol on radiation and combined radiation burn injury.

目的 比较研究E838、WR 2 72 1、茜草、盐酸胱胺和炔雌醇等 5种辐射防护药对放射损伤和放烧复合伤的防治作用及其相互间的协同作用。

Study on genetic characters in diploid and tetraploid of dactylis glomerata.

二倍体和四倍体野生鸭茅遗传特性比较研究。

Decolorization methods were studied. The best decolorization technology was: Using the LSD208 resin to decolorize, the decolorization rate, polysaccharide content and polysaccharide yield reached 88.19%, 92.32%, 64.16% respectively.

对树脂、活性炭、H2O2 3种脱色方法进行了比较研究，确定了最佳脱色工艺：采用LSD208树脂脱色，脱色率、多糖含量、多糖得率分别达88.19%、92.32%、64.16%。

In this article, by comparative research of the basic principles, agents, methods and effects of the hot metal pretreatments of desiliconization, dephosphorization and desulphurization, the writer defines that the converter-shaped pretreatment of desiliconization, dephosphorization and desulphurization has become the key pretreatment technique of the hot metal for its fine effect, low cost, and outstanding economic and environmentally friendly advantages.

本文通过对铁水预脱硅、脱磷、脱硫基本原理、预处理剂、预处理方法和处理效果的比较研究，明确了转炉型&三脱&工艺因其效果好，成本低和突出的经济、环保优势成为铁水&三脱&预处理的主流工艺。

Methods: The changes of the content of pinoresinol diglucoside, extract and fingerprint were studied.

通过杜仲盐制前后松脂醇二葡萄糖苷的含量、醇溶性浸出物以及指纹图谱的变化进行比较研究。

A series of hydrogen-bonding associated main-chain complexes based on dipyridyl and dicarboxylic acid derivatives have been prepared by slow solvent evaporation, and a comparative investigation has been conducted on their thermotropic phase transitions and liquid crystalline behavior by FTIR, DSC and polarized optical microscopy.

采用慢挥发溶剂组装方法制备了一系列羧酸/吡啶氢键缔合的主链型超分子复合物，并采用FTIR， DSC以及偏光显微镜等对其相转变与热致液晶相行为进行了比较研究。

Cross-countries studies of the disproportionality of various electoral systems have become a popular topic in academic circles.

对选举制度与选举结果不比例性的关系，从事跨国的比较研究，是目前学术界的重点之一。

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。