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The better reaction conditions are as follows: Reaction temperature is 40°C, Reaction time is 5 hour; the ratio of L - phenylalanine to acetic acid and N - formyl - L- aspartyl anhydrideis 1:10.2:1.1, Its yield is 95.4%.

在查阅文献的基础上,得到较优的α-L-天冬氨酰L-苯丙氨酸甲脂盐酸盐的合成方案,在甲醇一水体系中,N-甲酰-α-L-天冬氨酰-L-苯丙氨酸在浓盐酸的作用下60℃水解90分钟,后冷却到15℃加入浓盐酸在20~30℃保温反应96小时,进行甲脂化,形成甲脂盐酸盐,结晶析出。

Leaves sessile; blade broadly oblong or oblong-ovate to narrowly oblong or oblong-lanceolate, 2-6.5(-8)× 1-3.2 cm, thickly papery, abaxially rather paler but not glaucous; laminar glands dense, unequal dots or short streaks; intramarginal glands dense; main lateral veins 4-6-paired, with densely reticulate tertiary venation not or scarcely prominent abaxially; base cordate-amplexicaul, apex rounded to shallowly retuse.

叶无柄 叶片宽长圆形或长圆状卵形到狭长圆形或长圆状披针形, 2-6.5(-8)* 1-3.2 厘米,厚纸质,背面相当浅但不是苍白;片状腺体浓,不相等的小圆点或者短的条纹;近边缘内腺体浓; 4-6配对的主要侧脉,突出的具密网状第三脉不或几乎不;抱茎基部心形,先端圆形对浅微凹。

The amount of solution elevation, the vapor amount and the maximum height of the elevated solution are related to different heat loads.

得出了浓溶液的提升量、蒸汽发生量、浓溶液最大提升高度对应于不同的加热负荷的关系曲线,实验发现这种蒸发管是一种有效的强化传热管。

The results were gained that correspond to different heat load, amount of solution elevation, vapor amount, maximum height of the elevated solution, the minimum submersed depth of solution.

得出了对应于不同的加热负荷,浓溶液的提升量、蒸汽发生量、浓溶液最大提升高度及稀溶液最小浸没高度的关系曲线,为该类型热虹吸泵的设计和运行提供了依据。

In this thesis,MWNTs were modified firstly using concentrated acid of H_2SO_4 and HNO_3,and then octadecyl isocyanate was grafted onto the surface of the MWNTs to improve the dispersion and the interaction between the filler and the matrix.

第一步,用浓硫酸和浓硝酸的混合液对MWNTs进行酸化处理,第二步,用廉价的十八烷基异氰酸酯对酸化过的MWNTs进行烷基化处理。

Due to the DesignJet 5000 is a six-color business card printing and membership card equipment, with an additional light green and light magenta inks, so the software can use digitally simulated dot gain and waterish the effect of wet trapping to print out and business card printing and membership card product the same multitoning Rose leaf patterns.

由于DesignJet 5000是一款六色制卡和会员卡制作摆设,带有出格的不浓青和不浓品赤色油墨,因此软件可以用数字办法模仿网不面放大和湿压湿陷印的成果,从而打印不入与制卡和会员卡制作产物不异的半色调玫瑰斑斑纹。

Under the limitation of production cost and the requirement of mass production, pulp concentration is basically processed by filtrating and press.

纸浆浓缩工艺受生产成本的制约及大规模生产的要求,基本上只能采用低浓段过滤和高浓段挤压的方法进行浓缩。

Theestablished French classifications of clear soups are bouillon and consommé.Thick soups are classified depending upon the type of thickening agent used: purées arevegetable soups thickened with starch; bisques are made from puréed shellfish or vegetables thickened with cream ; creamsoups may be thickened with béchamelsauce ; and veloutés are thickened with eggs , butter andcream.

已确立的法式分类中清羹汤是肉汤和清炖肉汤,浓羹汤又按照使用的食材而划分为:素糊是用淀粉增稠的蔬菜羹汤;海味奶油浓汤是由海贝酱和蔬菜制成,用奶油增稠;忌廉羹汤可能由贝夏梅尔调味白汁;而白汁沙司则用蛋,牛油和奶油增稠。

The observed EMF values of oxygen concentration cell coincided withtheoretical values perfectly, indicating that the ceramics were purely oxide-ionicconductors with oxygen ion transference number of 1 under oxygen atmosphere over thewhole temperature range. The electrochemical oxygen permeation rates determined were inaccordance with the theoretical rates calculated from Faradays law, verifying directexperimentally that the oxide-ionic nature of the conduction under oxygen atmosphere. Athigh oxygen partialpressure range pO_2=10~(-5~10~5 Pa, they were almost pure ionicconductors, which was consistent with the result by means of oxygen concentration cell.Whereas at low oxygen partial pressure range pO_2=10~(-5~10~(-15)Pa, the samplesexhibited mixed ionic and electronic conduction.

结果表明,氧浓差电池电动势的实测值与理论值吻合得很好,氧离子迁移数为1,表明该系列样品在该温度下氧气气氛中为纯氧离子导体;氧泵实验结果进一步证实了该系列样品在氧气气氛中为纯氧离子导体;在氧分压pO_2=10~(-5)~10~5 Pa的高氧分压气氛中,电导率与氧分压变化基本无关,表明在该氧分压范围样品为纯离子导体,这与氧浓差电池电动势测定结果相吻合:在低氧分压为10~(-5)~10~(-15) Pa范围,总电导率随氧分压降低而稍有升高,表明在该氧分压范围样品为氧离子与电子的混合导体。

Aliquots of diluted bloodsamples were incubated with two different doses of fibrinogenconcentrate, FXIII concentrate, the combination of both, orwith two different doses of FFP.

稀释的等量血液样本分别加入两种不同剂量的纤维蛋白原浓聚物, F ⅩⅢ浓聚物,或联合应用,或两种不同剂量的新鲜冷冻血浆。

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Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书,王祥生,李德昌。安徽省首次发现嗜群血蜱。

Chapter Three: Type classification of DE structure in Sino-Tibetan languages.

第三章汉藏语&的&字结构的类型划分。