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The type, initial feeding time and concentration of precursor for HV unit formation had great effects on PHBV production in shake flasks. Propionate was selected as the better precursor for HV fraction than valerate after comprehensive survey of these two precursors. The suitable PHBV shaking-flask culture conditions were obtained through the analysis of PHBV fermentation process, the investigation of several factors by using RSA method and the fed-batch experiments. Cell dry weight, PHBV content, PHBV concentration, HV fraction and yield coefficient of HV unit to propionate were 27. 7g/L, 80.7%, 22. 4g/L, 16. 1mol% and 0.50g/g, respectively.

在共聚物PHBV的摇瓶发酵过程中，PHBV中HV组分形成的前体物质的种类、初始加入时间以及加入量是影响PHBV发酵过程的重要因素；在综合比较丙酸和戊酸这两种前体的基础上，选择丙酸作为HV组分合成前体较适宜；通过对PHBV发酵过程曲线分析、影响PHBV发酵指标的各因素的响应面分析以及摇瓶发酵补料试验，得到了较适宜的PHBV摇瓶发酵补料条件，在此条件下，细胞干重、PHBV含量、PHBV浓度、HV组分含量和HV组分对丙酸的产率系数可分别达到27.7g/L、80.7％、22.4g/L、16.1mo1％和

In the paper , we propose two methods of interference excision: Fraction Zeroize and Fraction Clip.

文章的主要工作就是提出了两种干扰消除算法：部分归零法和部分修剪法。

The optimum reaction conditions were as follows: rosin 5 g, m: in: m 1:2:2, palladium chloride 0.090 %, n: n1:10, hydrogen pressure 5 MPa, reaction temperature 160℃ reaction time 3 h, mass fraction of abietic acid could be under 1%, mass fraction of dehydroabietic acid was 5.6%, which conforms to the national standards. The regeneration of catalyst was investigated. After cycling five times, the product of hydrogenated rosin still conforms to the national standards without any treatment of catalyst.

在松香5g、m：m：m1：2：2、氯化钯0.090%、n：nl：10、氢气压力5MPa，反应温度160℃，反应时间3h的较佳工艺条件下，产物氢化松香中极酸的质量分数小于1%，去氢枞酸的质量分数5.6%，符合GB/T 14020-2006国家标准；并对催化剂的重复使用性能进行了考察，催化剂相不经过处理直接重复使用5次后，产品氢化松香仍然符合国家标准中关于枞酸和去氢枞酸的指标要求。

For 480 days of decomposition, the decomposition rate was highest in soil with medium fertility and lowest in soil with low fertility among three type of fertility. The decomposition of water soluble factions and lignin were promoted in medium fertility soil. However, alcohol-benzene soluble fraction, and semi-cellulose and cellulose fraction were decayed acceleratedly in soil with high fertility. Furthermore, more humic substance was formed and energy states of decayed corn stalk was highest in soil with high fertility.

腐解480 d，3种肥力间比较发现，玉米秸秆在中等肥力田块上矿化率最高，低肥力田块上的最低；中等肥力土壤能够促进玉米秸秆中的水溶性有机组分和木质素的分解，而高肥力土壤能够促进苯–醇溶性组分和半纤维素、纤维素分解，并有利于腐殖物质的形成，而且腐解物的能态最高。

By tracing the antifungal and antibacterial activities of the volatile oils, it is found that the major active site in fiuit oil of Litsea mollis is aldehydic fraction such as citral, the major active site in oil of Thymus quinquecostatus is phenolic fraction such as thymol and the major active site in ginger oil is high boiling-point terpenic constituents such as β-caryophyllene, eudesm-4 (14)-en-11-ol, et al.

通过抗菌活生追踪发现，毛叶木姜子果油的主要活性部位是醛类成分，如柠檬醛；地椒油的主要活性部位为酚类成分，如百里香酚；姜油的主要活性部位为&高沸点萜类组分&，如β-丁香烯、4（14）-桉叶油烯醇-11等。

Compared with the control groups,we found that only fraction Ⅳ decreased the lung coefficient of RDS mice in a dose dependent manner and ameliorate the decrease in blood PaO_2 and the protein exudation of RDS rabbits.Because of the anticomplement activity of fraction Ⅳ, it was suggested that this ...

结果显示：与对照组相比，组份Ⅳ使实验组小鼠的肺系数降低且呈量－效关系；使实验组家兔PaO2下降幅度减少，支气管－肺泡灌洗液蛋白渗出量减少；组份Ⅳ具有抗补体活性的作用，其缓解油酸型RDS的作用可能与此有关。

Soil moisture evaporation decreased with the increasing of calcic nodule mass fraction in soils. When calcic nodule mass fraction reached 0.5, soil moisture evaporation amount decreased by 8 mm, accounting for 10% of total soil water content.

土壤水分蒸发量随钙结石质量分数的增加而降低，当钙结石质量分数为0.5时，土壤水分蒸发降低8 mm，占到土壤总水分的10%。

The models of auricular edema in mice by dimethyl benzene and increased permeability of celiac blood capillary by acetic acid were studied,the results showed that the petroleum ether and acetic ester fraction of fermentation product of Calvatia gigantea could inhibit ear edema;acetic ester and n-Butanol fraction of fermentation product could reduce the permeability of celiac blood capillary by acetic acid.

大秃马勃Calvatia gigantea发酵液的石油醚、乙酸乙酯和正丁醇提取物进行二甲苯诱导小鼠耳廓急性炎症和醋酸所致小鼠腹腔毛细血管通透性实验，结果表明大秃马勃Calvatia gigantea发酵液石油醚提取物处理组、乙酸乙酯提取物处理组对二甲苯诱导小鼠耳肿胀具有明显的抑制作用；大秃马勃Calvatia gigantea发酵液乙酸乙酯提取物处理组、正丁醇提取物处理组对醋酸所致小鼠腹腔毛细血管通透性具有明显的抑制作用。

The equilibrium volume fraction, chemical driving force of carbonitride precipitates, atom fraction of each element in austenite and carbonitride at different temperatures were calculated.

以析出热力学为基础，对Fe-Nb-C-N系统中奥氏体/碳氮化物的热平衡过程，计算了不同温度下碳氮化物析出相的平衡摩尔分数、化学驱动力、各组元的原子分数及奥氏体组分等。

Multiple-walled carbon Nanotubes were used as carrier to load cerous sulfate catalyst for catalytic synthesis of n-butyl propionate Single factor and orthogonal experiment methods were applied to investigate the effects of the molar ratio of butyl alcohol to propionic acid, cerous sulfate mass fraction and reaction time on the conversion of propionic acid and the optimal technical conditions were determined as:ratio of butyl alchhol and propionic acid 1.5:1, cerous sulfate mass fraction 15% and reaction time 70 min.

以多壁碳纳米管作载体担载硫酸铈催化合成丙酸丁酯。分别采用单因素和正交实验方法考察了醇酸摩尔比、硫酸铈质量分率和反应时间等主要因素对丙酸丁酯得率的影响，并确定了最佳工艺条件为：醇酸摩尔比1.5：1、硫酸铈质量分率15%和反应时间70 min。

There are two types of gold deposits in this area, namely altered rock type and quartz vein type.

本区金矿床包括两种类型：柴胡栏子金矿床为蚀变岩型金矿；莲花山和红花沟金矿床属石英脉型。

You were home and it was two weeks ago.

你回到了家里。当时是两周前。