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Result indicated at 37 ℃ the strain grow faster and produce more acid, but culture at 30 ℃ the tolerance to NaCl and bile salt was better.

结果表明,该菌在37 ℃培养时具有繁殖速度快、产酸能力强的特点,而在30 ℃培养时具有更强的耐盐、耐胆酸盐能力。

This paper discussed the effect of soluent,refluence time,the oxidation state of iron in ferric salt and the mol ratio of DBU and Phn on the species,crystal form and productivity of composite.

本文讨论了溶剂、回流时间、铁盐中铁的氧化态及 DBU 与邻苯二腈的摩尔比对合成产物的物种、晶型及产率的影响,提出了合成酞菁铁的较佳试验条件。

The isomerization of resin acid was studied by HCl catalysis method, high temperature catalysis method and microwave-assisted method. Separation of abietic acid was analyzed with recrystallization method and many organic amine salt methods; Using abietic acid separated from resin acid as raw materials, 6 compounds of abietic-type resin acid derivetives were synthesized.

从产率、纯度和成本等方面分析对比了改进的二戊胺盐法、A胺盐法、B胺盐法和文献报道的二戊胺盐法分离提纯枞酸;以得到的枞酸为原料,进行氧化合成,得到6种枞酸的氧化衍生物,通过柱分离得到2种枞酸氧化衍生物纯品,并测试了其抑菌和对家蝇的拒食活性。

In part one, the reactions of some active fluorine-containing compounds such as 2, 2-dihydropolyfluoroalkanoic acids and ethyl 2-hydropolyfluoroalkenoates were studied and various fluorine-containing heterocyclic compounds were synthesized. Using 2, 2-dihydropolyfluoroalkanoic acids as the starting material, 4-fluoroalkyl quinolin-2-ols, 2- [ -1-hydropolyfluoro-1-alkenyl] -4H-3, 1-benzoxazin-4-ones, 1-aryl -4, 9-dihydro-3-fluoro-alkyl-1H-pyrazo [3, 4-b] quinolin-4-ones, 5-fluoroalkyl-12H-quin olino [2, 1-b] quinazolin-12-ones, 4-fluoroalkyl-1, 3-dihydro-1, 5-benzodiazepin-2-ones and 4-fluoroalkyl-2H-pyrido [1, 2-a] pyrimidin-2-ones were synthesized through its condensation reaction with anilines, anthranilic acid, N'-aryl-o-aminobenzamides, o-nitro aniline, o-amino pyridine and their derivatives and the subsequent transformations. 5-Fluoroalkyl isoxazolidines, 3-fluoro-3-fluoroalkylisoxazolidino [4, 3-c] quinolin-4-ones, 3-fluoroalkylisoxazolino [4, 3-c] quinolin-4-ones and 2-aryl-3per fluoroacylindoles were synthesized by inter-and intramolecular 1, 3-dipolar cycloaddition of fluorine-containing olefins and nitrones.

第二部分,我们研究了α,α-二氟苄基卤类化合物的亚磺化脱卤反应、产物的转化及全氟烷基亚磺酸盐与芳环化合物的全氟烷基化反应,发现全氟苄基碘或溴及α,α一二氟苄基溴在保险粉等亚磺化脱卤试剂引发下可生成相应的亚磺酸盐;全氟苄基亚磺酸盐与氯气或溴反应可生成全氟苄基磺酰氯或磺酰溴;在烯烃存在下,全氟苄基碘则与烯烃发生加成反应,生成相应的1:1加成产物;在三价醋酸锰的作用下,部分芳香化合物如茴香醚,二甲氧基苯,吡啶,喹啉等可以和过量的全氟烷基亚磺酸盐发生双全氟烷基化反应,反应表现出一定的区域选择性,产率良好。

The quality yield of Moderate salt-tolerant variety Nei Nong Da You 1 was higher than non-tolerant variety Avena magna.

中度耐盐品种内农大莜1号的产质量高于盐敏感品种大燕麦。

The factors affect on the degree of substitution of product, yield and apparent viscosity, such as the mol rates of EPTAC with -NH2, reaction temperature, reaction time and the content of water in system have been discussed in detail. FTIR spectrometer and UV spectrometer are used to characterize the structure of the derivative and it is proved that substitution reaction mainly occurs on the -N element .The particle size and morphology of chitosan and quantemary ammonium salt of chitosan are analysised by comparing photos of their scanning electron microscope. The degree of substitution of HACC is determined by acid -base conductometric titration. An error in current formula of DS has pointed out and a correct formula has presented.On the base of experience of above experiment, the reaction conditions of HACC were systematically investigated through orthogonal design, and then the best conditions are found. Water-solubility and dependence of pH are studied.

壳聚糖和环氧丙基三甲基氯化铵在异相条件下发生反应,通过单因素实验,制备了一系列不同性能的壳聚糖季铵盐,本文首次详细讨论了反应条件(反应摩尔比、反应时间、反应温度、水含量)对产率及产物性能的影响;用红外光谱和核磁共振对结构进行表征分析时,发现季铵盐阳离子基以N位上取代为主;通过电镜图片对壳聚糖和季铵盐衍生物外观形貌进行对比,采用酸碱电导滴定法测定产物的取代度,并对常用取代度公式做了修正。

CO is used to produce formate,formic acid and oxalic acid by reacting with alkaline,in which the CO usually from coal vaporization is replaced by the CO from tail gas of yellow phosphorus production,by-reaction between thermal phosphoric acid and formate or oxalate to produce formic acid or oxalic acid,and by product dihydric phosphates.

提出用生产黄磷尾气中的CO与碱反应生产甲酸盐甲酸草酸,或利用热法磷酸和甲草酸盐反应生产甲酸草酸并副产磷酸二氢盐,继续加工可制得磷酸盐系列和碳一化工系列产品分析该磷化-碳一化工产业在节能减排降低投资与生产成本方面的优势,并简述了黄磷尾气杂质对产品质量的影响及尾气的净化方法

Nearly all sea ice bacteria producing protease were halophilous or salt adapted.

几乎所有的产酪蛋白酶海冰细菌都耐盐或嗜盐

The reaction mechanism of triglycidyl isocyanurate and the production process were briefly mentioned, but the characteristics of production process were introduced in detail.

简要介绍了TGIC工艺反应原理、工艺生产流程;重点介绍了该工艺特点,包括含盐废水处理及回收利用,用中和法处理含盐废水,可回收4%左右的环氧氯丙烷原料,工业用盐纯度达95%,用副产品法处理含盐废水,可产纯度89%的工业用盐,同时还可生产水溶性树脂副产品;废水封闭循环利用,使生产过程无废水排放;母液回收利用,可生产光敏树脂。

Though studying the rate of permeable salt of two-pass reverse osmosis system,the effects of feed water pH value, permeant flux ,feed water conductivity on the permeable salt rate of the system are analyzed and the change regular of permeable salt rate along with the three factors is summarized.

以二级反渗透系统的透盐率为研究对象,分析了给水pH值、产水通量、给水电导率对系统透盐率的影响,总结了透盐率随三个因素的变化规律,比较得出了其中给水pH值对透盐率的影响最大的结论,且给水pH值为弱碱性条件下的透盐率最低

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