产下

The effect of the substrate concentrations on 5-fluorouridine production was investigated in the presence of various concentrations of uridine and 5-fluorouracil under the optimal conditions mentioned below. The best conversion yield, 49% was obtained in optimal reaction conditions.

我们也探讨了在不同反应条件下5-氟尿苷的酶促合成，结果表明，产气肠杆菌EAM-Z〓游离细胞以UR和5-FU作为底物合成5-FUR的最佳条件为：最适pH为7.8，最适温度55℃，UR/5-FU为2.8，磷酸盐浓度为30mM，菌体用量为10％，反应时间为9h。

A new study idea that makes the occupant injury prevention research and CAD/CAE technology on an integrate mathematical model by means of feature theories and feature design technologies was brought, and it is maybe useful if we study automobile passive safety on a new view of point.The conclusions of this thesis included that what are the main factors of airbag-related injuries and the preventive measures, based on the research of the relationships between injury parameters, such as HIC, chest acceleration, neck force, neck moment, femur axial force etc, and impact speed, belt-use, occupant size (50th and 5th), sitting position and so on. The thesis evaluated whether the effectiveness of the airbag can be increased by making the airbag adaptive to the crash conditions, and points out that the size of the ventilation hole has the dominating influence on the performance of the airbag and is a key factor for intelligent airbag, multi-stage and lower-power inflator can cost effectively minimize the risk of injury to occupants from crashes. It is important for the researchers of intelligent airbag to keep the small size unbelted occupants in focus and it is necessary to study deeply the influence of airbag fold patterns and the extremity out-of-position situation. These topics are important in the study of occupant injury prevention and vehicle safety design.

论文研究得出产生气囊损伤的主要原因和防护措施；在研究汽车碰撞速度、安全带使用情况、乘员的体型5~(th和50~、乘员乘坐的位置等不同事故条件作用下，乘员的头部、颈部、胸部和腿部损伤参数变化规律的基础上，论文从能量因素出发，深入研究了安全气囊卸载能力、气体发生器产气能力和气囊折叠对乘员损伤参数的影响，指出起卸载作用的排气孔其截面积是智能型安全气囊最重要的控制参数之一，以及采用降能展开或二次充气气囊有助于提高汽车安全防护性等重要结论；论文在参数分析的基严内容提要2 础上得出的智能型安全气囊应以不佩戴安全带的5乘员作为主要防护目标进行研究、有必要深入研究气囊折叠形式和司机处于极端离位状况时对损伤参数的影响等结论，对深入进行汽车乘员碰撞损伤研究和汽车安全性设计都具有重要的理论和工程实际意义。

And the hydrogen production reach 94.69 ml/ while temperture:37℃, starting pH: 6.0, material concentration:30g/L,digested sludge concentration ^.5 g/L and peptone was taken as organic nitrogen while ammonium chloride as abio-nitrogen.

原料秸秆经过处理后，在温度37℃，初始pH 值6.0，底物浓度30g/L，污泥浓度27.5g/L，以蛋白胨为有机氮源，NH_4Cl 为无机氮源条件下的产氢能力为94.69ml/。

At present,the oil production of many ESP wells is very low in block 1/2/4 of Sudan and their production value has been less than the lower limit of the ESP optimum production capacity range.

目前，在苏丹1/2/4区油田有许多潜油电泵井的产量比较低，其产量值已经低于泵的最佳排量范围下限值。

The spectroscopic properties (λ〓〓,λ〓〓,φ,τ, k〓, k〓) of 〓 were also measured. It was found that the energies of absorption and emission maximum is red-shifted for both electron-withdrawing and electron-donating substituents compared to that of parent 〓 complex.

发现无论X是吸电子取代基还是给电子取代基，配合物的吸收峰和发射峰与母体化合物〓相比均向红移；常温下，具有吸电子基的配合物与具有给电子基的配合物相比，有较高的发光量子产率和长的激发态寿命。

If there was no such a pressure in the semi-natural condition, will the saigas do optional choice for birth and hiding sites, or change their hiding behavior?

那么，在半散养条件下，没有这样的压力存在，塞加羚羊的产仔地是否会具随意性，或者说躲藏行为是否会出现变化？

American vigilance brought the fall of Russias communist govt, and China is next.

美国的警惕已经使俄国共产政府垮台了，下一个就是中国。

During the total preparation process, it was inevitable to conduct with the chiral center of prolinamide and the target product would became racemized or even could not be obtained at all.

由于在合成过程中，不可避免的触及不对称中心，发生消旋使产率下降甚至得不到产物，因此本文还研究了D-脯氨酰胺在不同温度、pH值、反应时间下对它的消旋的影响和脱羧机理，这对以后的工业化生产有着极其重要的意义。

Insertion of ethylacetate or DMF into 1-zircona-2-azacyclopent-3-ene complexes at 50 oC affords pyrroles in moderate yield when they quenched with KOH aqueous.

1-锆-2-氮-环戊-3-烯错合物在室温下可与乙酸乙酯或DMF进行插入反应，经由氢氧化钠水溶液水解后，可得到不错产率的比咯。

The oxidations of-abietic acid by 〓,〓 and 〓 under various reaction conditions and its addition reaction withdichlorocarbene were investigated.

本文首先从广西产松香中分离纯化得到松香酸，然后探讨了不同条件下〓等氧化剂对其共轭双键的氧化反应以及二氧卡宾对其共轭双键的加成反应。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。