根条件

Phenylenediamines, aminophenols, methoxyanil ines, and 1,4- hydroquinone, 1-naphthylamine were polymerized via the catalysis of horseradish peroxidase in mixed solvents of l,4-dioxane and water at amibient conditions by using hydrogen peroxide as the oxidant. Several factors influencing the polymer yield, such as the concentration of the substrate, pH value and oxidant amount were examined using a- phenylenediamine as substrate.

本文选择了苯二胺、氨基苯酚、甲氧基苯胺三个系列，以及对苯二酚、1-萘胺等单体，在二氧六环-水混合介质中以辣根过氧化物酶为催化剂，以双氧水为氧化剂进行了不同底物的室温酶促聚合，并以邻苯二胺为底物考察了溶剂用量、pH值、作为氧化剂的双氧水用量等条件对聚合物收率的影响。

The optimal boron concentration for growth of pea (Pisum sativum L.) andcucumber (Cucumis Sativus L.) plants was screened by designing a series of boronconcentration in nutrient solution and the influeuce of boron deficiency or toxicityon integrity of cell membrane in different organs of the two plants was studied bymeasuring pH of the nutrient solution,〓 concentration and conductance in rootexudate solution and extracting solution of different organs from the two plants.

用不同浓度硼的营养液培养豌豆、黄瓜植株，筛选和确定在温室条件下生长所需的最适硼浓度和硼毒害浓度；进而通过对缺硼、对照和硼毒害处理后营养液pH变化，根分泌物和不同组织浸提液中K+浓度和电导率的测定，研究了缺硼和硼毒害对两种植物不同组织细胞膜完整性的影响。

The effect of arbuscular mycorrhizal fungi on utilization of insoluble phosphate and the growth in Poncirus trifoliateL.

实生苗为试材，以摩西球囊霉为菌剂，研究低磷胁迫条件下接种丛枝菌根真菌对枳利用难溶性磷酸盐及生长的影响。

The results showed that the transformation efficiency of the leaves precultured for 9 d on preculture medium, infested in OD value equal to 0.7 bacterium medium for 10 min, and then co-culture in dark conditions and co-cultured medium with 100μmolL^(-1) acetosyringone for 3 d respectively; was optimal.

结果表明，预培养9d的悬铃木叶片在OD600值为0.7的根癌农杆菌菌液中浸染10min后，再在含有100μmolL^(-1)的乙酰丁香酮的共培养培养基上黑暗条件下共培养3d叶片的遗传转化效率最高。

This may be mostly resulted from the smaller lateral root diameter and the nearer distance between clonal ramet and mother plant or related to the environmental conditions of different population patches or different management measures.

可能是产生克隆分株的根径较小和克隆分株距离母体植株较远造成的，同时也可能与不同种群斑块环境条件的差异或不同的管理措施有关。

Effects of iron and two nitrogen forms on remobilization of iron from different iron pools in maize plants were studied in a split root system in nutrient solution under controlled conditions.

采用分根技术、营养液培养方法，研究缺铁条件下供应不同形态氮素对玉米苗期体内不同铁库中铁再利用的影响。

Methods To determine the content difference of main secondary metabolites from 3 different provenances roots of Rumex gmelini planted in the same growth condition by HPLC.

通过HPLC法检测同一生长条件下的3种不同种源毛脉酸模根中主要次生代谢产物的含量动态变化规律。

Russula Subnigricans Hongo was studied with light microscopy and scanning electron microscopy techniques.The result showed that Russula Subnigricans Hongo is a kind of ecotomycorrhizal fungi, Russula Subnigricans Hongo emerged and developed in the relatively steady ecological environment where average temperature,humidity and soil water content were 24 ~ 32 , 50 ~ 80% and 30% respectively.

亚稀褶黑菇是一种外生菌根菌，在相对稳定的生态环境条件下，平均温度24～32℃，相对湿度50～80％，降雨量30％以上，均有亚稀褶黑菇发生，湿度是主导因子。

Roots of Sanguisorba officinalis L. var. longifolia Yu et Li1. The experiment is designed to study the technical condition of water soluble polysaccharide extraction from roots of Sanguisorba officinalis L.

本研究探讨了长叶地榆根中水溶性多糖的提取工艺，经过单因素和正交组合试验，得到多糖提取的最佳工艺条件：料水比为1：40，提取温度为90℃，提取时间为2h，次数为3次。

It was investigated how to increase the yield and purity of tannin, flavone and oligoprocyanidms from the root and stalk of sanguisorba, and the stability of polyphenols from sanguisorba was studied, too. The chemical constitutes of sanguisorba were analyzed, the conditions on extracting tannin, flavone and oligoprocyanidins from sanguisorba by general lixiviating process and ultrasonic wave were optimize. The flavone and oligoprocyanidins were separated from sanguisorba and purified. The stability of polyphenol from sanguisorba was studied and the chemical structure of the products was analyzed.

本论文以地榆根茎为原料，对如何提高其主要活性成分鞣质、黄酮类物质以及低聚原花青素得率和纯度以及地榆多酚的稳定性进行了探讨；主要分析了地榆中化学成分，常规浸提和超声波浸提对地榆根茎中鞣质、黄酮类以及低聚原花青素提取条件的优化，地榆根中黄酮类和低聚原花青素的分离纯化，地榆多酚稳定性能以及产品的初步化学结构分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。