二价的

The fluorescence properties of complexes of europium with β-diketone and terbium with benzoic acid and its derivatives were analyzed and the synergic effect of the second ligand was illustrated from the energy matching of the minimum triplet state of ligands and the resonance energy level of rare earth ions.

提出了掺杂离子荧光增强效应的机理。 4。首次采用ab initio CIS方法，在劈裂价层基组3—21G水平上对各配体进行了量化计算，系统分析了前线分子轨道特征和激发态的能级，从配体最低激发三重态能级与稀土离子共振能级的能级匹配，分析了铕与β-二酮的配合物的荧光性能和铽与苯甲酸系列衍生物的配合物的荧光性能，解释了第二配体的协同效应。

Deferrizers and demaganizers are series of products designed by our company for underground water with comparatively high iron and managanese content according to aerating oxidation priciple.in these prducts,packed natural manganese sand in filter is applied as filtering materials,and oxygen in air is applied as oxidants,to make ferrous iron in water oxidized into ferric iron, in a same time, oxidation reaction makes its produced its produced substances left in filtering materials for purposes of deferrization and deman-ganization.

除铁锰装置是我公司针对铁、锰较高的地下水，按曝气氧化法的原理而设计的系列产品，它是利用过滤器内装填城然锰砂为滤料，利用空气中的氧化剂，使水中的二价铁，同时发生氧化反应使其物进截留在滤料中，从而达到除，除锰的目的。

Cardiolipin is a unique Phospholipid with dimeric structure, carrying four acyl groups and two negative charges.

心磷脂是脂类中独一无二的带有负二价头部基团及多达四条尾链的磷脂分子，是线粒体内膜的主要成分，作为与功能相关的膜结构转变的主要参与者，近几十年来深受研究者的关注。

Fromthese facts,It could be deduced that 8 to 14 pairs of chromosomes possessed a certaindegree of hetorology,which was directly groved to be hybrid origin of P.tomentosaaccording to the good chromosome homology and fertility of P.bolleana and thehybrids of P.tomentosa×P.bolleana,it could be further deduced that the original parentsof P.tomentosa involved probably P.bolleana or P.alba.

从终变期、中期I的染色体构型看，有数目不等的联会程度较差的单价体和棒状二价体出现，在后期I，甚至末期I亦可见到含落后染色体分裂相的细胞，由此推断可能有8~14对染色体表现出一定程度的异源性，鉴于新疆杨以及毛白杨与新疆杨杂交产生的杂种毛新杨的染色体同源性较强、育性较好等现象，进一步推断毛白杨起源亲本可能包括新疆杨或银白杨。

The acute virus necrobiotic disease virusC AVND viruswas isolated from diseased scallop Chlamys farreri collected in the Taiping Bay of Qingdao. Using purified virus as antigens, the polyclonal antibody with high titer was prepared in rabbits. The polyclonal antibody as the first antibody, IgG-HRP as the second antibody, indirect ELISA technique was set up through selecting the best interactional conditions among the first antibody, the second antibody and antigen.

以患病栉孔扇贝组织中提纯的急性病毒性坏死症病毒作为免疫抗原，注射新西兰白兔制备出效价高达1：32000的多克隆抗体作为第一抗体，第二抗体为辣根过氧化物酶标记的羊抗兔IgG，通过交叉稀释法确定抗原、一抗及二抗的最优反应条件，建立酶联免疫吸附分析方法体系，病毒检测灵敏度达30ng。

The controlled experment shows dinuclear [Cu22] is the intermediate for tetranuclear [Cu44].

控制的实验表明二核的[CuI22]是四核的混合价铜配合物[Cu44]的中间体

The present application provides methods of purifying polypeptides having a Fc region, for example, antibodies or antibody fusions, by adsorbing the polypeptides to a Fc binding agent, such as, for example, Protein A or Protein G, followed by a wash with a divalent cation salt buffer to remove impurities and subsequent recovery of the adsorbed polypeptides.

本申请提供了通过将具有Fc区的多肽，例如，抗体或抗体融合吸附到Fc结合剂，例如，A蛋白或G蛋白上，然后用二价阳离子盐缓冲液洗涤，以除去杂质，随后回收被吸附的多肽来纯化所述具有Fc区的多肽的方法。

In the medium without copper and iron, onlywith ferric citrate , the expression of FDR3 could complement the growth defect of ctrl mutant .CTR1 is a member of high梐ffinity iron transport system .

酵母突变体中铁高亲和系统的成员Ctrl缺失突变，培养基中不供给二价铁和铜，仅以柠檬酸三铁作为唯一的铁源，FDR3基因的表达能够恢复Ctrl突变体在该选择培养基中的表型生长。

The invention relates to a method for cleaning mercury and nitrogen oxide in fire coal smoke gas, employing specific chemical matter as additive to be added into high-heat smoke gas in furnace, said chemical matter selectively reducing nitrogen oxide and oxiding mercury into bivalent mercury.

本发明涉及一种燃煤烟气中单质汞与氮氧化物的同时净化方法，采用特定的化学物质作为添加物加到锅炉的高温烟气中，通过该化学物质对烟气中的氮氧化物进行选择性还原，同时将单质汞氧化成二价汞。

Consisting of a pair of homologous,synapsed chromosomes,as occurs during meiosis ;double.

二价染色体的由一对同源，联会染色体组成的，如在成熟分裂时出现的；双的

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。