查询词典 optimum

The optimum reaction condition was as follows: catalyst dosage=4.3% of the amount of ethanediol,reaction time 50 min.1,4-dioxane yield of 84.82% was obtained under the optimum condition.

考察了催化剂用量、反应时间和反应温度等因素对收率的影响，得出最佳反应条件：催化剂用量为乙二醇质量的4.3%，反应时间50 min，收率可达84.82%。

A pivotal problem to recognize of the precise position of laser facula has been solved in the process of design work: Firstly the method of background-subtraction is used to eliminate or weaken the affect of background light. Secondly the image threshold segmentation operation and morphologic operation are used to locate the sketchy position of laser facula ; Then the new method of Extracting Edge are designed based on character of laser facula , by using this method in the search area the edges of laser facula can be extracted effectively; At last the optimum picture of laser facular is selected by using the triggering function of hardware and function of software. The exact result can be obtained only by image processing to optimum picture.

在设计过程中解决了精确确定激光斑中心位置这一关键问题：首先利用减背景法，消除或减弱背景光的变化对确定激光光斑中心的影响；再对减完背景后的图片进行阈值分割和二值化处理以确定激光光斑的粗略位置；根据本文激光光斑的特征，设计了一个有效的边界提取算法，对指定区域进行提取激光光斑边界操作，精确的确定激光斑中心位置；最后利用硬件的触发功能和软件编程实现了激光光斑最佳图片的判读，只有对最佳图片进行图像处理得到结果才是准确的。

The production strain was inoculated into the optimum liquid and solid fermentive medium, and fermented in the optimum liquid and solid fermentation condition respectively, and then examined the GLP yield.

结果发现，固态发酵灵芝多糖的产量为58.8g/kg，液态发酵灵芝多糖的产量为52.5g/l，固态发酵的产糖量略高于液态发酵的产糖量。

The best explant in the culture was brown leaf,and the explant sterilized in 0.1% aqueous mercuric chloride for 5min has the best effect;At the initial stage in induction,3% glucosan have the best effect following with 1% glucosan+2%sucrose are optimum in the process of culturing;the optimum culture medium is 1/2MS; the preferable medium of callus is 1/2MS+ KT(0.1mg/L)+6-BA(0.05mg/L)+2.4-D(0.4mg/l);differentiation1/2MS+6-BA(0.3mg/l)+NAA0.2+KT(0.05mg/l);and the preferable medium of rooting is :1/2MS+NAA(0.05mg/L).

安祖花组织培养的最佳外植体为棕色叶片；最佳消毒时间为0.1%的升汞消毒5min；最佳碳源：诱导初期3%的葡萄糖的诱导效果最佳，后期培养以2%蔗糖+1%葡萄糖的培养效果较好；最佳基本培养基为1/2MS。

In the beginning,some points are randomly distributed over the grabbling domain,and every point of them is regarded as a "fisher".Then every "fisher" of them is used to search "himself" optimum points or global optimum solution through "his" moving search,reducing search and speeding search independently.

设初始时在搜索域中随机分布有若干个点，每个点看作一个&渔夫&，每个&渔夫&通过移动、收缩和加速三种搜索方式在搜索空间中独立开展寻优活动，以搜寻全局的最优解或最优点。

Methods The article applied the orthogonal design to find out the optimum proportion of the rutin, soybean isoflavone and curcumin. The free radical DPPH scaving ratio was used as evaluating standard of orthogonol design and the hominal liver cancer cell SMMU-7721 was used in MTT trial to evaluate the inhibitory ability of the compound. Results The optimum proportion of rutin-soybean isoflavone-curcumin 2:3:7 was achieved.

选取3种天然植物抗氧化物质芦丁、大豆异黄酮、姜黄素，利用正交试验设计选择合适配方，以自由基DPPH的清除率作为正交试验评价标准，并利用人肝肿瘤细胞SMMU-7721进行四甲基偶氮唑盐试验来考察配方体外试验对肿瘤细胞的抑制作用。

Based on equipotential models of some scholars, according to a practicable fact which large substation grounding grids are not equipotential any longer, in inequipotential model, the paper analyzes the influence of the soil resistivity and the grounding grid area on the optimum arrangement in the uniform soil; the paper analyzes the reflective coefficient of double-layer soil, the top-layer soil thickness and the grounding grid area on the optimum arrangement.

为了使地表面的电位均匀分布，进一步降低接触电压和跨步电压，更好地保障人身和设备的安全，本文提出了接地网的优化设计方法。

The optimum conditions of lipase pretreatment and the optimum ratio of lipase and laccase were investigated in this paper.

摘 要：利用脂肪酶具有降解脂肪和蜡的特性，将漆酶与脂肪酶混合处理麦草，以提高蒸煮药液的渗透性，改善蒸煮性能。

The molecular weight of dextransucrase measured by SDS-PAGE was 170 kDa ,which was similar to the enzyme from Leuconostoc mesenteroides. The enzyme had an optimum temperature between 25and 30℃ and an optimum pH of 5.4. It was relatively stable in the range of pH 5.0 to 7.0, but the stability declined rapidly as soon as the temperature rose over 35℃.

以蔗糖为底物，酶促反应的最适温度为25～30℃，最适pH值为5.4，动力学常数Km值为10.43 mmol/L；酶活在pH 5.0～8.0较为稳定，在室温（25℃）保藏4 天仍有59%的酶活力，4℃保存7周酶活力仅下降一半，但在35℃以上失活很快；Ca2+对催化作用有较大的促进，Mg2+有微弱的促进作用，K+对催化反应无影响，Cu2+的抑制作用最强。

The results showed that expression plasmid pET22b-lysB was constructed successfully. Highly purified recombination protein was obtained 33.2 mg from 1 L LB culture medium. A screening for His-LysB activity on esterase and lipase substrates confirmed the lipolytic activity. With p-nitrophenyl butyrate as substrate, the thermal stability of the enzyme was poor when the temperature was above 30oC. The enzyme exhibited higher stability at pH 5.0–9.5. The optimum temperature and pH for the lipolytic activity of His-LysB were 23oC and 7.5 respectively. Under the optimum conditions, the specific activity of His-LysB was 1.3 U/mg. Zn2+, Cu2+, Mg2+, Mn2+and phenylmethane sulfonyl fruoride severely inhibited the lipolytic activity of His-LysB.

结果表明：成功构建了pET22b-lysB表达载体，并从1 L的LB培养物中获得了33.2 mg高纯度重组蛋白；His-LysB具有分解脂肪的能力，属于脂肪酶；生物化学特性分析表明：丁酸对硝基苯为水解底物，His-Lys热稳定性不佳，30℃以下比较稳定，随着温度的升高，稳定性逐渐降低；该蛋白具有较高的pH值适应性，pH 5.0~9.5范围内稳定性较高；在23℃和pH 7.5时酶活力最高，其比酶活为1.3 U/mg；金属离子Zn2+、Cu2+、Mg2+、Mn2+和苯甲基磺酰氟抑制剂对酶活具有强烈的抑制作用。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。