查询词典 cadmium

To investigate the leyels of lead, cadmium and copper in blood and urine samples among residents in an electronic waste recycling site as well as frequencies of micronucleated binucleated cells in those subjects.

［目的］研究电子垃圾拆解集散地居民血尿铅、镉、铜的暴露水平和淋巴细胞双微核率的变化及其影响因素。

Levels of lead, cadmium and copper in blood and urine were determined by atomic absorption spectroscopy, and frequencies of micronucleated binucleated cells in peripheral blood lymphocyte were measured by cytokinesis-blocked micronucleus assay.

采用石墨炉原子吸收光谱法检测血铅、血镉和尿铅、尿镉、尿铜含量，火焰原子吸收光谱法测定血清铜含量；胞质阻滞双微核实验测定淋巴细胞双微核率。

The crystal structures have been determined by single-crystal X-ray diffraction.Cadmium atoms in compounds 1 and 2 show an eight-coordinated distorted square-antiprismatic geometry and a seven-coordinated distorted pentagonal bipyramidal geometryrespectively. Copper atoms in compounds 3 and 4 show a six-coordinated distorted threeprismatic geometry and a four-coordinated distorted tetrahedral geometry respectively.

所有配合物的晶体结构都通过单晶X-射线衍射确定：配合物1中的镉离子周围显示八配位的扭曲四方反棱柱构型；而配合物2中的镉离子周围显示七配位的扭曲五角双锥构型；配合物3中的铜离子周围显示六配位的扭曲三棱柱构型；配合物4中的铜离子周围显示四配位的扭曲四面体构型；配合物5中的锌离子周围显示六配位的扭曲八面体构型。

In the procedures of syntheses, we chose 2,2"-bipyridine (2,2"-bipy), 4,4"-bipyridine (4,4"-bipy), 1,10-phenanthroline (1,10-phen) and 8—hydroxyquinoline as neutral ligands, and lead, copper, zinc, cadmium and manganese as metal ions in our research.

使用的中性配体为2，2′-联吡啶(2，2′-bipy)、4，4′-联吡啶(4，4′-bipy)、1，10-邻菲罗啉(1，10-phen)和8—羟基喹啉，研究的金属离子为主族金属Pb以及过渡金属Cu、Zn、Cd和Mn。

A pot experiment was carried out in greenhouse to observe the yield, the absorption amount of cadmium and zinc of rape（ Brassia campestris L.）, and soil pH responses to different amendments applied in red soil, a typical soil of China.

采用盆栽试验，研究了施用改良剂—石灰、有机肥、海泡石对红壤上小油菜生物产量、镉锌吸收量、pH、吸收系数的影响。

Resonance light scattering spectrum of cadmium- phenanthorline- bromophenol blue system has been studied. The effects of interference substances and optimization of procedure have been investigated. In the presence of Tris-HCl(pH=9.60),Cd2+ reacts with Phen to form the chelate cation, which further reacts with acid dye of BPB to form an ion-associated complex. Then, the complex molecules are accumulated to particles by virtue of hydrophobic forces and other molecular forces. This results in significant enhancement of RLS intensity, and the enhanced intensity of RLS at 638nm is proportional to the concentration of Cd~(2+).

研究了镉-邻菲罗啉-溴酚蓝体系在碱性条件下的共振光散射光谱特征，考察了体系的影响因素和最佳反应条件，研究表明，在pH=9.60的Tris-HCl介质中，镉与邻菲罗啉形成络阳离子，再与酸性染料溴酚蓝形成离子缔合配合物，在疏水力等分子间作用力下，缔合物分子聚集形成缔合微粒，溶液的共振散射光显著增强；在638nm处RLS增强程度与镉浓度成线性关系，线性范围为0-3.20mg/L，检出限为4.50ug/L。

The joint toxicity of copper, cadmium and zinc ions to tadpole of Bufo bufo gargarizans was determined using additive index method.

以蟾蜍蝌蚪为实验材料，采用联合指数相加法，研究了重金属铜、锌和镉离子对蟾蜍蝌蚪的急性毒性和联合毒性效应。

The effects of cadmium stress on POD activity of D. caryophyllus were mainly on the change of individual enzyme belt Rf value, the drop of enzyme band number, and the increase of enzyme activeness.

镉胁迫下对石竹叶POD的影响主要表现为个别酶带Rf值的改变、酶带数的下降和活性的增加。

The cadmium stress was set up by 5 concn. treatments at 0, 0.5, 5.0、10.0, 50.0 mg/L to soak D. caryophyllus seeds and fresh leaves resp., the seed germination energy, leaf chlorophyll and isozyme were determined. The low concn.

方法］镉胁迫设5个处理(0、0.5、5.0、10.0、50.0mg/L)，对石竹种子浸泡后测定其发芽率；对新鲜石竹浸泡后测定其叶绿素含量和同工酶。

Objectives:Heavy metal tolerance of recombinant Chlamydomonas reinhardtii and its bioaccumulation ability to Cadmium ion were studied.

转基因藻对Cd2+的富集能力经MT-like蛋白表达后较野生藻细胞有较大增加，最大达到144.48μmol/g，为野生藻的8.3倍。

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。