离子对

The effect of concentrations of Zn, Cu, Pb, Cr, Cd on the viscosity and gel properties of actomyosin and myosin was determined by using texture analyzer after addition of heavy metals.

为了解重金属离子污染对鱼体质地的影响，通过外源添加不同浓度的Zn、Cu、Pb、Cr、Cd重金属离子，采用质构仪测定添加不同浓度金属离子对肌动球蛋白和肌球蛋白黏性和凝胶特性的影响。

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题，系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性，通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析，全文主要内容如下： 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明：红磷在空气中发生缓慢氧化、歧化反应，微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度，其中铜离子的作用最为明显，而铝、锌等离子减慢了红磷的氧化速度，银离子对减少红磷的吸湿性效果最好。

Metallic ion effects on DNA stretching were investigated. It is found that the effects of monovalent and divalent cations were significantly different.

研究了金属离子对DNA拉伸的影响，发现一价金属离子和二价金属离子对DNA的影响有显著的差别。

We review the effect of rare earth ions on bone metabolism as the following three aspects:(1) effect of rare earth ions on differentiation and function expression of osteoblasts and osteoclasts;(2) effect of rare earth ions on the osteogenic and adipogenic differentiation of bone marrow stromal cells;(3) effect of rare earth ions on bone mineral phase of animals.

本文回顾了稀土离子对骨代谢影响的研究进展，探讨了其药用和安全性问题，主要从以下三个方面进行综述：(1)稀土离子对成骨细胞和破骨细胞的分化和功能表达的影响；(2)稀土离子对骨髓基质细胞成骨分化和成脂分化的影响；(3)稀土离子对动物骨矿物相的影响。

We review the effect of rare earth ions on bone metabolism as the following three aspects:(1)effect of rare earth ions on differentiation and function expression of osteoblasts and osteoclasts;(2)effect of rare earth ions on the osteogenic and adipogenic differentiation of bone marrow stromal cells;(3)effect of rare earth ions on bone mineral phase of animals.

本文回顾了稀土离子对骨代谢影响的研究进展，探讨了其药用和安全性问题，主要从以下三个方面进行综述：(1)稀土离子对成骨细胞细胞和破骨细胞的分化和功能表达的影响；(2)稀土离子对骨髓基质细胞成骨分化和成脂分化的影响；(3)稀土离子对动物骨矿物相的影响。

As an extension to the "973" Program of National Planning key basic research project -----the study of China lake nutrient over-enrichment process and the mechanism of blue alga outbreak, this paper introduces our experiments as below:(1) Experiment on heavy metal absorption and disorption abilities of Ceratophyllum demersum , Hydrilla verticillata and Myriophyllum triphyllum, in order to campare their absorption capability .

本文在前人的研究基础上，依托国家&973&国家重点基础研究规划项目&湖泊富营养化过程与蓝藻水华暴发机理&，开展了下列工作： 1、选取狐尾藻、金鱼藻、黑藻三种大型沉水植物作为研究对象，通过对重金属离子铜离子的吸附及解吸实验，比较其三种沉水植物之间吸附能力的大小； 2、选取狐尾藻、黑藻为研究对象，研究了重金属离子铜离子对沉水植物的胁迫作用及铜离子在植物体内的富集情况； 3、选取黑藻为研究对象，研究了沉水植物在富营养条件下不同浓度的氨态氮和硝态氮对沉水植物的生理生长的影响。

XPS experiments showed that zirconia sample possesses a 2p electron binding energy of phosphorus at 132.95 eV after the zirconia was treated with DNA solution, which showed that DNA was adsorbed onto this zirconia; TEM images showed that DNA appears in emanant on zirconia particle.

研究了镧离子、铕离子及钙离子对DNA电子传递速率的影响，用Tafel方程计算了动力学速率常数。结果表明，在金属离子的浓度均为1.0×10〓mol/L时，分别加入铕离子、镧离子及钙离子，其动力学常数分别是原来的2.91倍、2.26倍及1.45倍，其增加的顺序是Eu＞La＞＞Ca。

In addition, the second rare earth, such as Tb〓、La〓、Gd〓 and Y〓, was separatively doped in the europium carboxylic complex and replaced some europium ions. The luminescence properties were discussed to research the effect of the second ions to europium ions.

本文将第二种稀土离子Tb〓、La〓、Gd〓和Y〓分别掺入到铕的羧酸配合物中，让第二种稀土离子部分取代铕离子，并详细地研究了不同含量的第二种稀土离子对中心发光离子铕荧光性质的影响。

The result shew, Chromatin broke into pieces which dispersed around the irregular nucleus, nuclear outer member disintegrated; Mitochondria condensed, cristae of which disintegrated partly; The endoplasmic reticulum dilated, vesiculated, gradually disintegrated; A great number of dense granules appeared in the cell. To sum up: Enrichment of heavy metals in Eriocheir sinensis, Macrobrachium nipponease, Cipangopaludina cathayensis is obviou""

综上所述：我们首次证明上海地区沼虾、河蟹、园田螺对重金属元素富集能力要明显强于淡水鱼类；肝、鳃是鱼、虾、蟹体内重金属富集的主要部位；Hg和Cr为高富集元素，Cd是中富集元素，Cu和Pb为低富集元素；罗氏沼虾对镉离子和锌离子的96小时的半致死浓度（LC50）分别为0.115mg/L和0.68mg/L；首次证明锌离子、GSH在一定范围内可以抵抗镉离子对罗氏沼虾肝胰脏破坏。

It is shown that in solution the ion pairs can exist in such different forms as contact ion pair, solvent-separated ion pair or free solvated ions. Solvent polarity influences not only the spectral properties of different forms, but the equilibrium between them as well, leading to change of physicochemical properties of the ion pairs.

观察到在溶剂中离子对可以各种形式存在，如紧密离子对、溶剂分隔离子对或溶剂化的自由离子，溶剂的极性不仅影响各种存在形式的光谱性质，而且影响它们之间的平衡关系，进而影响离子对体系的物理化学性质。

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。