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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 results show that the blacktop performance can be improved efficiently up to existing technical standard if adding properly the reclaiming agent in the outspent asphalt mixture. Some key points are suggested for designing recycled asphalt mixture as blacktop, which may be referable to the design and construction of utilizing recycled asphalt mixture.

结果表明:在旧沥青内添加适宜、适量的再生剂可以有效地改善旧沥青的路用性能,达到规范所规定的技术标准要求;提出了沥青路面混合料再生设计中应该注意的问题,对今后沥青路面的再生设计与施工具有一定的指导意义。

There are a lot of phosphorus/uranium deposits in marginal basins along Yangtze platform , hosted in Early Cambrian strata and controlled by some specified paleogeographic and paleostructural positions.

大量磷铀矿床产于扬子地台边缘海盆,含矿岩系为下寒武统,矿床产出在适宜的岩相古地理与古构造部位,分东西两个成矿带。

With choosing the suitable lining technology, holding the key points of execution, adopting reasonable measures during the operation and maintaining, the problem of corrosion on phosphatic compound fertilizer equipment is better solved, the plant is functioning normally, and the consumption and charge are reduced.

结合实践经验,对磷复肥设备的几种衬里工艺不断进行完善和总结,通过选择适宜的衬里工艺,掌握施工要点,并采取合理的使用和检修措施,较好地解决磷复肥设备的腐蚀问题,保证了生产正常运行,并节约了费用。

Also, textual sources appear to indicate that Hebrews lived in villages and raised livestock, seasonally grazing them in drier areas which didn't farm well, a form of subsistence known as transhumance.

文献资料显示希伯来人居住在村落,饲养牲畜。周期性地将牲畜移往更干燥的不适宜耕种的地区放牧。这种方式就被称为&季节性牲畜移动&。

Indeed, one of the strongest arguments for "deregulating" major sectors of the economy is the claim that agencies often cannot learn enough about the regulated industry to make sound policy.

事实上,赞成&取消管理&经济的主要部门的最有力的论点之一是,机关常常不能充分地了解被调控管理的工业以制定出适宜的政策。

Sodium diacetate has the role in preventing the increasing of MDA and the decreasing of pectin in asparagus. All of the four preservatives cannot prevent the increasing of coarse fibre. The super absorbent polymer can effectively delay dewing in the package bags in a given time, but the available dosage and package material should be studied thoroughly.

双乙酸钠处理还可以较好地抑制MDA含量的增加并有延缓果胶分解的效果。4种防腐保鲜液处理均不能抑制芦笋纤维素含量的增加高吸水性树脂在一定时间内具有理想的防结露效果,但适宜使用剂量和包装方式尚需进一步研究。

But these friendly hostelries can be minefields of potential gaffes for the uninitiated.

在英伦诸岛上,和陌生人亲切地交谈被认为是完全适宜的正常行为的唯一场所可能就是吧台了?

Since 1978, to meet the requirements of afforestation, some 50 sapling farms have been set up in various places, introducing, naturalizing and cultivating scores of tree breeds suitable for Tibet.

这些科研成果,为西藏在经济建设和发展中更好地利用自然资源,不断改善人类生存环境提供了科学依据。1977年,国家农林部组织了对西藏全区的第一次全面森林资源清查。1978年起,为适应造林绿化的需要,各地先后建立苗圃近50个,引进、驯化、培养了数十种适宜西藏生长的造林绿化树种。

Now I am officially out of kid-appropriate pranks.

现在,我正式地没有儿童适宜的恶作剧。

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推荐网络例句

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。