含磷的

Since most of the large molecules containing phosphorus element have double bonds, it is necessary to consider the special structures of double bonds in order to deal with these large systems more accurately. So, based on density functional theory and electronegativity equalization principle, applying a general atom-bond electronegativity equalization method , using separated program, through regression and least-squares optimization , the parameters of atoms and bonds in molecules are determined . By these parameters , the charge distributions and the energy of some molecules containing phosphorus element, especial the fragment of DNA, RNA, are calculated . The results are quite good.

由于这些含磷生物大分子体系都含有双键，为了明确的处理双键，进而更准确的解释带有双键和共轭双键的含磷生物大分子结构与性质的关系，我们以密度泛函理论~([1-4])和电负性均衡原理~([5-9])为基础，应用和开发原子-键电负性均衡方法中的σπ模型，利用最小二乘法，拟合确定了一些分子（含碳、氮、氧、氢以及磷等原子）的各种类型原子及化学键区域的参数，并利用上述参数计算了一些多聚核苷酸的电荷分布以及分子的总能量，进行了讨论，得到的结果可以和从头算相媲美。

There is an oxidation process in two determination methods of total N and total P, so the samples＇liquation and oxidation processes can be done simultaneously, and the standard curve can be acquired simultaneously by confecting blended standard solution, which simplifies the determination process of total N and total P.

由于二者测定时都存在将含氮、含磷化合物转化为硝酸盐和下磷酸盐的氧化过程，因此本研究考虑将污泥样品消解和样品的氧化过程同时进行，标准曲线也可以通过配制混合标准溶液来同时测定，这使得总氮、总磷测定流程得以简化。

This paper selected 7 samples and did a series of experiments about the isochermal absorption and fixation of phosphorus to select one or several suitable crucible residue to study compound fertilizer. The result declare that the absorbed phosphorus and the fixability of the No2,Noll and No21 is smaller than the other samples,for the more the desorpability of the three samples get to 30%- 40%.

为选择合适的含硅熔渣用于复合肥，本文对含硅溶渣样品进行了对磷的吸附与解吸和对磷的固定的测定，实验结果表明，2号、11号、21号三个渣样对磷的吸附量与固定率均比其他四个供试渣样少得多，且此三个渣样解吸率达到了30％～40％。

Five effective techniques were identified to improve the industry including producing controlled release fertilizers and phosphor recover from rural latrines and city sewage to improve the utilization and cycle efficiency of the phosphor industry.Quantitative indices such as cycle efficiencies and flow path lengths were calculated for these schemes.

总结磷元素高效循环利用的技术手段和措施，提出生产智能控缓释化肥、减少含磷农药使用量、减少含磷洗涤剂使用量、回收人畜粪便生产有机肥料和回收污水中的磷等措施构成6个不同方案改善该系统的物质利用水平，并对元素循环效率等指标进行分析比较。

For the long SRT in system, lower sludge activity had good substrate reverse and staged characters, which thus made the ERP-SBR system has good ability to resist the impact of the load.

试验发现，按照ERP-SBR方式运行可以大大减小化学除磷池的规模，而且石灰总耗量仅为城市污水后置沉淀系统的4.5%～9%，产生化学污泥含磷率为17%，相当于含73～83%磷酸盐，使化学沉积物具有较明显的回收价值。

The resulting epoxy resin cured with phosphorus-containing aralkyl cyanate ester exhibited better the glass transition temperature and modulus of elasticity than epoxy resin cured with phosphorus-containing aralkyl novolac resin.

实验结果显示，含磷芳烷基氰酸酯之环氧树脂硬化物，由於形成坚硬的Oxazolidone结构，使得其玻璃转移温度与弹性储存模数较含磷芳烷基酚醛树脂之环氧树脂硬化物为高。

In order to improve the electro-catalytic activity of platinum based catalyst to methanol oxidation, in this thesis, firstly prepare heteropoly acid modified Pt/GC electrode with different concentration by cyclic voltammetry method, and then test the cyclic voltammetry curves individually in vitriolic and methanol solution. The study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1×10~(-3)mol/L. And find the more heteropoly acid modified on electrode, the lower peak-up potential towards methanol because of the existence of oxygenous species.

为了改善铂基催化剂氧化甲醇的催化活性，本论文首先通过循环伏安扫描法制备了不同浓度磷钼酸和磷钨酸修饰的Pt/GC电极，通过研究Pt/GC电极在修饰前后在硫酸溶液中及含甲醇的硫酸溶液中的循环伏安行为发现，磷钼酸和磷钨酸均能在PtRu/C电极上发生氧化还原反应，而且杂多酸修饰浓度对Pt/GC电极氧化甲醇的催化活性有很大影响。

Diethylthiophosphoryl chloride was synthesized by reacting phosphorus thiochloride with anhydrous alcohol in the presence of NaOH, and then a novel phosphorus-nitrogen- and sulfur-containing flame retardant, 1, 4-di(O,O-diethyl thiophosphoryl imine) benzene, was synthesized via the reaction of diethylthiophosphoryl chloride with p-phenylenediamine.

以三氯硫磷与无水乙醇在NaOH存在下合成了二乙基硫代磷酰氯，然后再与对苯二胺反应合成了新型的含磷、氮、硫的膨胀型阻燃剂：1，4-二（O，O-二乙基硫代磷酰亚胺基）苯。

But the glass-transition temperature of the polymer decreased to 96℃. When the cuing agent, PN was replaced by diphenyldiaminomethane, the V-0 rating could be achieved with the least content (3.68 wt% P and 0.83 wt% N) and Tg was increased to 139℃. The cyanate ester- containing PN was synthesized by phosphorus-containing PN and cyanogen bromide.

为了减少磷的用量，将PN改成含有氮的硬化剂(Diphenyl diaminomethane， DDM)，利用DDM中的氮和含磷PN的磷产生氮磷共乘阻燃效果，可使磷用量下降至3.68%，氮含量0.83%即可达V-0级，而Tg也上升至139.83℃。

The precipitation behavior of FeTiP phase in P-added high strength IF steel, as well as its influence on the hardness were analyzed. The precipitation hardening effect in P- added IF steel was found.

分析含磷高强IF钢中FeTiP相的脱溶行为及对硬度的影响，发现含磷IF钢的时效硬化现象。

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。