查询词典 yield point

Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.

研究结果表明：氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代－β-紫罗兰酮和5，6-环氧－β-紫罗兰酮，经重结晶和硅胶柱层析分离，纯度高于98%；4-氧代－β-紫罗兰酮的有利合成条件是反应温度为45℃，反应时间为24h，溶液的pH值为1~3，反应物配比n：n(NaClO3)：n为20：100：3，最佳收率为53.5%；5，6-环氧－β-紫罗兰酮有利的合成条件是反应温度为40℃，反应时间为24h，溶液的pH值为3，反应物配比n：n(NaClO3)：n为20：120：5，其收率为25.4%；未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。

The selected prepared catalyst for isomerization of light oilis used under the reaction conditions of 260°C, 2.0MPa, WHSV=1.0h-1 , H2/Hydrocarbon molarration 4.0, n-pentane conversion rate is 62.17%,isopentane yield is 57.01%(isomerization rate is58.00%), isopentane selectivity is 91.60%, liquid product yield is 94.84%.

在 T=260°C，P= 2.0MPa ，WHSV= 1.0h-1 ，H/C5= 4.0 时，正戊烷转化率为 62.17%，异戊烷收率为 57.01%(产率为58.00%)，选择性为 91.60%，液体产物收率为 94.84%。

For the enzyme extraction, with the ratio of enzyme/giant knotweed 1:500 at 50℃ for 90 min, the yield of resveratrol is two times more than that extracted by ethanol. For the microwave extraction with the ethanol content of 80%, the liquid ratio of 1:20, extracting by microwave for 60s at 510W, the yield of resveratrol is three times more than extracted by ethanol with enzymation 30 min by microwave for 10 s at 510 W.

酶法辅助提取白藜芦醇的适宜提取条件为：酶解温度为50℃、pH值为5.0、纤维素酶与虎杖粗粉质量配比为1：500、酶解时间为90 min，比传统乙醇提取法提取收率提高2倍；微波辅助醇提白藜芦醇的适宜提取条件为：以体积分数为80%的乙醇溶液为提取剂，料液质量比为1：20，在510 W功率下微波1.0 min，比传统乙醇提取法提取收率提高近3倍；利用酶微波结合提取白藜芦醇，酶解30 min， 510 W功率下微波10 s，提取收率提高3倍，缩短了提取时间，降低了生产成本。

The gene substitution model analysis showed thatsubstitution of B for C allele at αs1-Casein locus had a significant(p＜0.05)effect on305-day milk yield,but not for milk fat percent;substitution of A1at β-Casein locus had ainfluence on 305-day milk yield,fat and protein percent;substitution of A at κ-Casein andβ-Lactoglobulin loci had no significant effect on all production performance.

基因替代模型的分析表明，αs1-CN位点B基因对C的替代显著影响305天产奶量，对乳脂率无显著影响，β-CN A1基因的替代对305天产奶量乳脂率和乳蛋率均有显著影响作用，κ-CN和β-LG位点A基因的替代对生产性能均无显著效应。

By means of researching the perpendicular interpenetration of water had the effect on rice turn green, tillering and yield, it proposed that perfect drainage works and facilities, cultivated land deeply at regular intervals, improve soil permeability can lay a strong foundation for high yield.

通过研究水的垂直渗透对水稻返青、水稻分蘖、水稻产量的影响，提出通过完善排水工程、设施，定期深耕田地，改善土壤渗透性，为水稻高产奠定基础。

A experiment was conducted to study the effect of cotton red leaf blight on yield characters and fiber quality of cotton by measuring some yield and fiber characters from plants of Zhongmian 41 with different disease degrees in field and room.

为了明确红叶茎枯病对棉花产量性状及纤维品质的影响，以中棉41为材料，采用田间调查和室内分析相结合的方法，对产量结构和纤维品质相关性状进行了测定和分析。

The results show that with increase of pressure, liquid yield increases while gas yield decreases.

随着实验压力的增大，液体产率提高，而气体产率减少。

Pers. and GIM5.29 as the research object, the difference of polysaccharide yield with lixiviation in polysaccharide extraction between ultrasound and enzyme was observed. At the same time, the difference of polysaccharides yield of these two Morchella was compared.

Pers。及黑脉羊肚菌GIM5.29的菌丝体作为实验对象，研究与常规热水浸提方法相比，超声及酶处理对多糖得率的不同影响，并比较两类羊肚菌在多糖得率上的区别。

Among them, the "Financial Street office project loan trust scheme" is expected to yield 4.6 percent, Century Star City trust schemes, Auchan Tianjin first shop property property project is expected to an annualized yield of 6%,"First City" property investment project even reached 8%.

其中， "金融大街办事处项目贷款信托计划"，预计收益率百分之四点六，世纪星城信托计划，欧尚天津第一家店铺物业地产项目，预计年收益率为6％，"第一城"产权投资项目甚至达到8％。

The results indicate that finishing temperature and coiling temperature have more affects on yield ratio of HP345 steel.Yield ratio will increase when finishing temperature and coiling temperatrue reduced;It is obviously decreased when coiling temperature is equal to 650℃;it is obviously increased while coiling temperature is reduced to 580℃;it is lower and has less variation while coiling temperature is between 610℃ an...

结果表明，终轧温度和卷取温度对HP345钢的屈强比都有较大的影响，降低终轧温度和卷取温度，均使HP345的屈强比升高；卷取温度为650℃时，屈强比明显降低；而卷取温度降至580℃时，屈强比明显升高；卷取温度在610℃~630℃区间变化时，屈强比较低而且变化不大，同时钢具有较高强度。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。