浓度

The mycelial growth of Rhizoctonia solani was promoted by vanillic acid and syringic acid at levels of 0.1~1 mM/L, and it was inhibited remarkably by p-counaric acid of over 1mM/L and modestly by ferulic acid. The radial extent of mycelia of Fusarium solani was increased significantly by ferulic acid of 0.1~1 mM/L and limitedly by p-coumaric acid. vanillic acid had paradoxcial effects on the growth, positively at low levels and negtively at high levels, on which Syringic acid had a slight effect.

试验结果显示：浓度为0.1~1mM/L的丁香酸对西洋参立枯丝核菌菌丝生长具有促进作用，香草酸也有一定的促进作用，但不呈浓度效应，浓度在1mM/L以上的香豆酸对其有显著的抑制作用，阿魏酸也有一定抑制作用；对于西洋参根腐菌，阿魏酸对其生长有明显促进作用，香豆酸也有一定促进作用，香草酸表现为低浓度促进，高浓度抑制作用，0.1~1mM/L丁香酸对其生长基本无影响。

Results(1)At concentration of 0.002 5%,the KT50 is 4 min :0.002 5% is 3.77(3.40-4.15)min ;0.005% is 3.17( 2.88- 3.48)min;0.01% is 3.45(3.25-3.65)min ;(2)the LC50 is 0.000 530 9%(0.000 490 0%-0.000 575 2%);(3)the 100% mortality(24 hour) with the Dagongda concentration is at the rate of 0.002 5%;(4)when used as residual smearing,Dagongda can be keep its efficacy more than 270 days under room temperature;(5)The field tests,the killing rates of 0.03% Dagongda to Xenopsylla cheopis were 80.80% for 2 days and 93.87% for 29 days respectively.

2当药物浓度在0.0025%、0.005%、0.01%时，印鼠客蚤24h死亡率均为100%。(3)持效：药膜在室温和普通湿度下存放9个月后，药物浓度在0.0025%以上时，印鼠客蚤24h死亡率均为100%。(4)现场2d灭效：使用0.03%浓度对地面游离印鼠客蚤的校正灭蚤率为80.80%。(5)现场残效(29d)：使用0.03%浓度对地面游离印鼠客蚤的校正灭蚤率为93.87%。

Chapter Ⅱ: The decontaminating effects of citric acid and chlorine dioxide on beef cuts were studied by the means of orthogonal experimental method.

第二章，运用正交实验的方法，研究了柠檬酸浓度、二氧化氯浓度和喷淋时间对牛肉减菌效果的影响，以得出柠檬酸浓度、二氧化氯浓度以及喷淋时间的最佳组合。

In order to get the microcapsule which enwraps high success ratio of lactobacil-lus, we need developed a new emulsification method which can protect the activity oflactobacillus during the spray drying process. Firstly, rapeseed oil was used as adispersion medium when water was emulsified in the initial period, the concen-tration of emulsification were: CAP:3%, Tween-20:0.05%, Span-80:2%, glutin: 1.5%,mechanical stirring speed:900r/min,and the emulsification temperature was 37.5℃.

在制备用于微胶囊的保加利亚乳酸杆菌中，首先以菜籽油为分散介质，在初步的乳化条件中，最佳的乳化条件为：邻苯二甲酸醋酸纤维素的浓度为3％、表面活性剂Span-80的浓度为2％、Tween-20的浓度为0.05％、明胶的浓度为3％、搅拌速度为900 r／min、乳化温度为37.5℃。

Through the analysis of the distributions of cold pulverized coal concentration and the area of high concentration zone, it was concluded that the smaller the central air expanding angle was, or the later the secondary air interfused, the larger the area of high concentration zone was.

通过分析冷态煤粉浓度的分布及煤粉高浓度区域面积的大小，得到：中心管扩角越小，二次风混入越晚，冷态高煤粉浓度区域面积越大；一次风率为0.2、一次风速为15 m/s、直流二次风速为25 m/s时冷态高煤粉浓度区域面积较大，有利于降低NOx的生成；内二次风旋流开度减小较外二次风旋流开度减小对冷态高煤粉浓度区域面积的影响大；内旋流强度为1.35、外旋流强度为1.56为最佳的试验工况。

Then in another tower, of which the height was 1.6m and the inner diameter was 20mm, the pentanol mixture was exactly rectified. The influence factors on separation effect, for example, the material concentration, evaporation velocity, circumfluence rate.etc, were studied and a set of separation system about salt-out -exactitude rectify was upbuilt. The result showed: when the material concentration was 60%, we got our product, 2-methyl-1-butanol, with the concentration over 99% and the top quality recovery over 82.7% which would increase as the material concentration did.

在高1.6m，内径为20rnm的精馏塔内，对戊醇混合物进行精密精馏，研究了原料浓度、蒸发速率、回流比等因素对分离效果的影响，建立了一套盐析-精密精馏的分离体系，结果表明：原料中2-甲基-1-丁醇浓度60％时，得到的2-甲基-1-丁醇产品浓度在99％以上，最高收率达82.7％以上，且随着原料浓度的增加而进一步增大。

CoFe2O4 is sensitive to low concentration alcohol and acetone, for other gases it has not sensitivity, so this material may be used to inspect low concentration alcohol and acetone.

研究发现，CoFe_2O_4制作的元件对低浓度的乙醇和丙酮气体有较好的灵敏性，对其他气体基本没有气敏性，因此，该材料可用于上述两种气体的低浓度检测；在乙醇和丙酮的低浓度范围内，两种气体的浓度与该元件的灵敏度呈良好的线性关系。

Six field measurement sections with dozens kilometers were performed with a real-time radon gauge and a air radon gauge , financed by Chinese Geological Survey. The results show that the Radon concentration is 6.7 Bq/L in field soil and 16.7 Bq/m3 in the air .

在中国地质调查局&四川成都经济区域城市生态地球化学评价&项目的成都市地空界面氡浓度的调查与评价实践中，进行了大量的实验和野外测量，结果表明成都市原野壤中氡浓度水平平均值为6.7Bq/L，空气中平均氡浓度为16.7 Bq/m~3，土壤中氡浓度整体是西部和东部偏高。

Experimental results indicate that about the results of flux, the flux of the mixed solution of amino acid and BSA doesn't have a significant influence with changing pH value, but it increases with the cross flow rate due to the resistance of concentration polarization layer decreases with increasing cross flow rate. The flux of BSA solution decreases with increasing concentration due to the resistance of concentration polarization layer increases with increasing concentration.

实验结果显示，滤速方面，胺基酸与BSA混合水溶液之滤速随pH値的改变并无明显的变化；但随扫流速度的增高而些许增加是由於增加扫流速度会增加膜内流体的扰动，减少浓度极化层阻力； BSA溶液之滤速随著浓度的增高而减少是由於浓度极化层阻力随著浓度增高而增加。

Biles from an animal model of incomplete stenosis of common bile duct in guinea pigs and from patients with and without gallstone were examined for the total protein concentration, protein fractionations by SDS-PAGE electrophoresis, endogenous and exogenous .beta.-glucuronidase activity, bilirubin fractionations by HPLC, ionized calcium activity, pH, cholesterol and bile salts concentrations.

我们利用天竺鼠总胆管不完全结扎的动物模式之胆汁与患有胆结石病人之胆汁，进行下列测定：总蛋白质浓度、SDS-PAGE蛋白质电泳分析、内源性与外源性葡萄糖醛酸酵素活性、胆红素高效能液态层析仪分型浓度、游离钙活性、pH值、胆固醇浓度与胆汁酸浓度。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。