生物合成

In order to study the mechanism of the biotype of Galium aparine resistant to tribenuron-methyl, the differences on ALS, GSTs, SOD and POD of the resistant and susceptible biotypes to tribenuron-methyl were preliminarily determined.

为探讨猪殃殃Galium aparine抗药性生物型对苯磺隆的抗性机制，测定了苯磺隆对猪殃殃抗性、敏感生物型体内靶标酶［乙酰乳酸合成酶］、代谢酶［谷胱甘肽-S-转移酶］及抗氧化酶影响的差异。

Cellulose is a kind of innoxious natural polymer material with abundant natural resources, high polymerization degree, good molecule orientation and chemical stability.

纤维素资源丰富，是一类聚合度高、分子取向好、化学稳定性强的天然高分子材料，且具有许多合成高分子无法比拟的优良的生物相容性和生物降解性能，无毒无害。

Synthesis of biodiesel by transesterification of rapeseed oil and methanol catalyzed by KOH/Al2O3 solid base was studied. The catalyst was prepared by isochoric impregnation. Effects of some factors on the transesterification were investigated systematically and reaction conditions were optimized. The optimum reaction conditions on KOH/Al2O3 catalyst were: mass ratio of KOH to Al2O3 20%; calcination temperature 400℃ for 5h; molar ratio of methanol to oil 12:1, the amount of catalyst 5wt%; reaction temperature 60℃ and reaction time 2h.

采用等体积浸渍法制备了KOH/Al2O3负载型固体碱催化剂，并将其用于菜籽油与甲醇酯交换法合成生物柴油的研究；分别考察了催化剂附载量、锻烧温度、醇油摩尔比、反应温度、反应时间等条件对生物柴油产率的影响；结果表明：用等体积浸渍法，在400℃煅烧5h，制得负载量为20%的KOH/Al2O3催化剂。

To localize the functional positions of biomolecules in ciliates cell, we constructed a macronuclear artificial chromosome containing a gene encoding red fluorescence protein based on the structural characteristics of ciliates chromosome.

为了能够有效地分析生物大分子在该细胞中的功能作用位点，本研究根据该生物染色体结构的特征，构建了含有红色荧光蛋白的大核人工染色体EoMAC_R，并与之前构建的含绿色荧光的大核染色体EoMAC_G一起，对蛋白质合成终止有关的3个重要因子核糖体大亚基蛋白L11、多肽链释放因子eRF1和eRF3在八肋游仆虫细胞中进行了荧光共定位分析。

This paper focuses on the stability study of Rhizopus oryzae IFO4697 when used for the methanolysis of renewable oils for biodiesel production. The results showed that water content was important for achieving high catalytic activity and good stability of the biocatalyst. The optimum water content was found to be 5%-15%. Both particle size and desiccation methods showed no obvious effect on the stability of the biocatalyst. With GA cross-linking pretreatment, the stability of the biocatalyst could be improved significantly. When Rhizopus oryzae IFO4697 repeatedly used for next batch reaction, direct vacuum filtration was found to be a good way for the maintenance of good stability of the biocatalyst.

本实验对固定化全细胞Rhizopus oryzae IFO4697催化植物油脂合成生物柴油的稳定性进行了系统地研究，结果表明：反应体系水含量对于全细胞催化剂的反应活性和催化稳定性有重要影响， 5%~15%含水量适宜；研究范围内，载体粒度及干燥方式对稳定性影响不显著；经过戊二醛交联后，全细胞催化油脂甲醇解反应的稳定性显著提高， 1200 h反应后，仍然可以保持75%的生物柴油得率；真空抽滤直接回用的方式有利于稳定性的保持。

The oil was further explored for biodiesel production by lipase-catalyzed methanolysis. Two processes were studied, namely, three-step methanol loading in solvent-free system and all-in-one methanol loading in tert-butanol system.

进一步利用该酵母油脂为原料分别研究了无溶剂体系中三步甲醇法及在叔丁醇介质体系中脂肪酶催化合成生物柴油，发现脂肪酶可以有效转化该酵母油脂制备生物柴油。

Must have experience in preformulation area or analytical development as well as pharmaceutical analysis according to written method/protocols.

实验室服务，包括合成化学，生物检测，毒理学，临床前医药开发，分析服务，生物制药和医疗器械测试，及其它相关合同研发服务。

Among them, pyrazole and its derivatives play an important part, exhibit better bioactivity and are becoming one kind of the most important leading structures in the fields of the organic synthesis.

在这些化合物中，吡唑类的化合物，尤其是吡唑类的芳环化合物被发现有着广泛的生物活性，因此成为了重要的药物研究先导结构，在很多有机合成及生物代谢过程中起着承上启下的中间体作用。

Regressive analysis showed that there were linearly positive relationships between PC contents and Cd toxicity in E. nuttallii and P. stratiotes L.. It was indicated that PCs could be a promising biomarker for estimating Cd toxicity.

回归分析显示，2种水生植物体内PCs的合成水平与Cd的生物毒性呈现一定的线性关系，表明PCs可作为重金属Cd胁迫的生物标记物指示水体中重金属的毒害程度。

Validamycins have been one of the most popular and economical biopesticides in China, by microbial transformation of which validoxylamine A and valienamine can be produced. Validoxylamine A has strong inhibition on trehalase and it is a new promising insecticide. Valienamine demonstrates strong glucosidase inhibitory activity, which can also be used as intermediate in the synthesis of medicines for diabetes.

井冈霉素目前已成为我国最经济最受欢迎的生物农药之一，用微生物转化法分解井冈霉素可以得到井冈霉亚基胺A和井冈胺，前者对海藻糖酶有强烈的抑制作用，有望开发成为新型生物杀虫剂，而后者是一种糖苷酶抑制剂，也可作为合成降糖药的原料。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失