卤素

The results show that the ECM potential behaves well in whole internuclear region, and that the ECM not only gives satisfied potentials for smaller diatomic molecules but also generates correct potential energies for heavier molecules like halogen diatomic molecules.

研究表明，ECM势不仅有优秀的物理性质，而且在分子振动全程具有较高的精度；ECM不仅能给出小分子电子态的满意势能结果，而且对于其电子构造和物理及化学性质都有一定特殊性的卤素双原子分子，也同样能给出正确的势能曲线。

The tin atom of the title molecule exists in a distorted- trigonal- bipyramidal geometry, defined by three carbon,one iodineand one oxygen atoms leading to a five - membered chelate ring. The x- ray analysis show tha...

标题化合物分子中的锡原子被配体的三个碳、一个碘和一个氧原子配位；配位原子是畸变的三角双锥构型；标题化合物具有与卤素发生取代反应而不发生加成反应的性质。

The initial SAR studies indicated:(1) the presence of a linker of methene at the N-1 may be beneficial to anti-HIV activity, while longer chain could enhance toxicity;(2) substituted phenyl at the C-2 could reduce toxicity;(3) 6-substituted benzimidazoles generally showed higher anti-HIV activity than 5-substuted ones;(4) the presence of a halogenated benzyl ring at the N-l would enhance anti-HIV potency and decrease cytotoxicity.

初步构效分析提示：(1)苯并咪唑环1位侧链间隔基为亚甲基时活性最好，侧链延长，毒性增大；(2)苯并咪唑2位侧链无间隔基毒性相对较低；(3)苯并咪唑6位取代活性高于5位取代；(4)苯并咪唑1位芳环用卤素取代，毒性明显降低。

The initial SAR studies indica ted:(1)the presence of alinker of methene at the N-1may be beneficial to anti-HIV activity,while longer chain could enhance toxicity;(2)substituted phenyl at the C-2could reduce toxicity;(3)6-substituted benzimidazoles generally showed higher anti-HIV activity than 5-substuted ones;(4)the presence of ahalogenated benzyl ring at the N-l would enhance anti-HIV potency and decrease cytotoxicity.

初步构效分析提示：(1)苯并咪唑环1位侧链间隔基为亚甲基时活性最好，侧链延长，毒性增大；(2)苯并咪唑2位侧链无间隔基毒性相对较低；(3)苯并咪唑6位取代活性高于5位取代；(4)苯并咪唑1位芳环用卤素取代，毒性明显降低。

On the other hand,noble gas cations have greater electron affinities and greater ionization energies than do isoelectronic halogen atoms .

另一方面，惰性气体离子有更大的电子亲和更大的电离能比等电子卤素原子。

In the second part of the paper , oxidation of phenanthrene for the preparation of phenanthrenequinone by using halogen compound was studied . The chief factors of this method was discussed , and the optimum processing condition was obtained . The mechanism of the reaction by potassium hydroxide-precipitated was discussed , and the reaction kinetic parameters was measured .

论文第二部分研究了卤素化合物作为氧化剂氧化菲合成菲醌的方法，探讨了这种氧化方法的主要影响因素，从中找出较佳的工艺条件，并对其反应机理进行了初步探讨，测定了氧化反应的一些动力学参数。

Firstly, the soil samples are gathered from the same section such as surface layer soil samples gathered from 0cm to 15cm depth and representation on studied object. Secondly, the precondition of tested samples must be the same. This study indicates that the tested samples must be 1mm diameter, over-dried at 40℃ for 24h and airtight cooling for 24h before measured for air-dry samples, and softly planish the surface at measuring. Lastly, the illuminating condition of light must be the same. This study indicates that the testing geometric condition are light source angle 15°, light source distance 30cm and sensor distance 15cm for soil hyperspectra indoor. The surface of white reference must be the same plane of that of sample.

第一个环节的"相同"是指田间土壤样品采集时的剖面位置一致，如表层土都采集0～15cm深度范围内的土壤，且所采集的样品应能尽量具备研究对象的代表性；第二个环节的"相同"是指土壤制备过程中的一些前处理条件应一致，建议土壤光谱测试样品的粒径1mm，风干土壤样品测试前在40℃恒温条件下烘24小时，然后密闭冷却24小时，测试时土壤表面进行稍稍压平处理；第三个环节的"相同"是保证测试光照条件的一致性，建议在50W卤素灯、8°探头角条件下，采用15°的光源照角度、30cm的光源距离和15cm作为室内士壤高光谱测试几何条件，测试时除遵循光谱测试指南的要求外，还须保证参考板表面与测试土壤样品的表面在同一平面上。

The lighting is provided by 5000 punctiform halogen lamps distributed in a network across the internal surface of the wave.

的照明是由5000个点的卤素在整个波内表面网络分发灯。

The halogen substituent parameters of the Cope rearrangement also have corresponding varieties with the change of the main quantum number.

随着卤素主量子数的变化，它们的取代半瞬烯Cope重排相关参数也有相应的规律性变化。

Economy and Safety: a Xenon lamp has a service life of 2500 hours, up to a car's service life, 10 times that of a general halogen lamp, showing worthwhile value.

经济安全：氙气灯使用寿命长达2500小时，相当于一辆汽车的寿命，是普通卤素灯的10倍，经济合算。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。