分子

So it is a effective prescription of protecting and treating AD.In our experiments, the model ras were administered D-gal intraperitioneal injection and β-Amyloid protein fragment_(1-40) into hippocampus. Mean well we used the technique of optical lens、 electron microscope、 immunohistochemical method, biochemistry and molecular biology.We studied the mechanisms that DR pretect and treat AD from the aspects of apoptosis、 inflammation injury、 oxidative injury 、 cholinergic neuron injury and the behavior experiments at cellar and molecular level.

本实验复制了D-gal腹腔注射合并Aβ_(1-40)海马定向注射AD动物模型，运用光、电镜技术及免疫组化、生物化学及分子生物学等先进检测方法，从行为学及细胞、分子水平探索地黄饮子对过氧化损伤、胆碱能损害、炎症损伤、细胞凋亡等相关调控因素影响的作用机制。

The experimental data also shows that the energy gap for electron transition of acetic acid molecules does not change in various molecular associations.

实验数据还表明：不同的分子缔合结构并不改变乙酸分子中的电子跃迁能级间隔。

Dye molecules are always a hot topic in the field of electrode modification due to its own conjugation system and the promotion ability on electron transition.

染料分子由于自身大都含有大的共轭体系，而且携带的基团能促进一些分子在电极表面的电子转移过程，因此在电极修饰领域一直是人们研究的热点。

The second component of this thesis is about the setup of oriented molecule photodissociation and the theoretical treatment. We primarily discussed the steric distribution, the probability of electron transition and the angular distribution of photofragment of the molecules in orientation field.

论文的第二部分是我们建造的利用Brute-force场使分子取向的光解实验装置和相应的理论处理，主要讨论了分子在取向电场中的空间排布、电子跃迁、和光解碎片的角分布。

In this paper, suah as Molecular electro-negativity distance vectors , Molecular Electronegativity Interaction Vector were further Studied.

文中对分子电性距离矢量/分子电性相互作用矢量等进行深入的研究。

The calculated results show that the most stable structures of C 5H 10NH(NH 3) n are one linear hydrogen-bonding, three-cyclic and four-cyclic structures for n=1, 2, 3, respectively. At MP2/6-31G//B3LYP/6-31G level, the MO population analysis of the most stable configurations C 5H 10NH(NH 3) n(n=1—3) has been employe...

在 MP2 /6 - 31G //B3LYP/6 - 31G水平下，对最稳定构型 C5 H10 NH( NH3) n ( n=1～ 3)的分子轨道进行布居分析，并且对相应的占据轨道进行指认。C5 H10 NH( NH3) n( n=1～ 3)垂直电离势的计算结果表明，形成氢键团簇后，分子的垂直电离势降低。

The trial model with chicken encephalomalacia was set up by using the feed of low congtent of V〓 and supplying excessive unsaturated fatty acid in feed for studying the molecular mechanism of chicken encephalomalacia in the study. On the basis of observing the symptom and postmortem examination in clinic and determining the content of V〓, the bodyweight, the weight of cerebrum and cerebellum, the focus of the study was on follows which were relative to neuropathic injury. The concentration of free radical and the function of antioxidant defense system of chicken with encephalomalacia were determined systematically.

中文题名雏鸡脑软化症的分子机理副题名外文题名 The molecular mechanism of chicken encephalomalacia 论文作者王振勇导师石发庆教授学科专业临床兽医学研究领域\研究方向动物营养代谢病学位级别博士学位授予单位东北农业大学学位授予日期2002 论文页码总数110页关键词雏鸡脑软化鸡馆藏号BSLW /2003 /S858 /7 为了深入探讨雏鸡脑软化症发病的分子机理，本课题通过在采用低V〓饲料和添加过量UFA建立了雏鸡脑软化症实验模型。

The calculated results indicate that there are two absolutely opposite regions in the vicinity of 5-FU. In one of the regions, water molecules can assist the tautomerism from 5-FU to its enol form 5-FU(superscript *, whereas in another region, water molecules can protect 5-FU from tautomerizing to 5-FU(superscript *).

研究发现，在5-氟尿嘧啶周围存在两类不同的区域，在其中一类区域中，水分子能促进质子转移的发生；而在另一类区域中，水分子却能阻碍质子转移的发生。

It is found that organic nanotubes from keto-enol isomeric dibenzoylmethane with different diameters show unique size dependent properties according to our experimental and calculated results. With the diameters of the nanotubes decreasing, the enol isomers of DBM molecules increased, the intensity of the fluorescence emission enhanced.

制备了平面稠环分子苝的纳米管，发现纳米管的形成机制源于模板孔洞的高长径比及溶液在高表面能基体上的自发铺展过程，苝层层沉积从而形成纳米管，苝分子头对尾的聚集体是形成纳米管的主要成份。

We also inserted an Enterokinase recognition site between the hSOD gene and the small peptide gene, then we can cleave away the small peptide from fusion protein easily.

在构建时还在小分子多肽与人SOD的连接区插入肠激酶识别位点，这样可以使小分子多肽能从融合蛋白中切割下来。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。