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cadmium treatment
相关语句
  镉处理
    Some detoxication mechanisms of different wheat varieties under cadmium treatment
    镉处理下不同小麦品种几种解毒机制探讨
短句来源
    Effects of Nitrogen Fertilizer on the Root Morphology and Cadmium Accumulation in Low Cadmium Treatment Sedum alfredii Hance
    氮对低镉处理下东南景天根系形态及镉积累的影响
短句来源
    Our result showed that in Cd-treated plants (hydroponic culture or sewage irrigation), the change of physiological and biochemical index was more significant than in the controls and was correlated with cadmium treatment concentration.
    研究结果表明,无论是在水培条件下对狭叶香蒲根系添加不同浓度的镉处理还是对生长在土壤中的植株进行镉污水浇灌处理,与对照相比,狭叶香蒲体内的生长、生理、生化指标均发生不同程度的变化,但存在一定的浓度效应。
短句来源
  镉处理
    Some detoxication mechanisms of different wheat varieties under cadmium treatment
    镉处理下不同小麦品种几种解毒机制探讨
短句来源
    Effects of Nitrogen Fertilizer on the Root Morphology and Cadmium Accumulation in Low Cadmium Treatment Sedum alfredii Hance
    氮对低镉处理下东南景天根系形态及镉积累的影响
短句来源
    Our result showed that in Cd-treated plants (hydroponic culture or sewage irrigation), the change of physiological and biochemical index was more significant than in the controls and was correlated with cadmium treatment concentration.
    研究结果表明,无论是在水培条件下对狭叶香蒲根系添加不同浓度的镉处理还是对生长在土壤中的植株进行镉污水浇灌处理,与对照相比,狭叶香蒲体内的生长、生理、生化指标均发生不同程度的变化,但存在一定的浓度效应。
短句来源
  “cadmium treatment”译为未确定词的双语例句
    Present Situation and Development for Wastewater Containing Cadmium Treatment Technology
    含镉废水处理技术现状及发展
短句来源
    Accordingly,the inhibitory effects on cadmium uptake and accumulation in Chinese cabbage shoots were prominently grown in the cadmium 0.6,0.9mg/kg contaminated soil,with the concentration and the total cadmium decreased significantly compared with the non-silicon cadmium treatment.
    显著地减少在土壤较高外源镉浓度(0.6,0.9mg/kg)污染下的白菜地上部对镉的吸收与累积,有效地降低了白菜地上部重金属镉的浓度和吸收总量。
短句来源
    The DNA repair was found among the zinc treatment, cadmium treatment, lead treatment as well as metal mixture treatment, and the order of the repair ability was the metal mixture>Pb>Zn>Cd.
    Cd、Zn、Pb和混合重金属离子的处理中都检测到修复作用的存在 ,修复作用的大小顺序为混合重金属离子 >Pb >Zn >Cd ;
短句来源
    The contents of crude protein dropped when cadmium treatment was in arrange of 0~25 mg·kg-1 while rose when more than 25 mg·kg-1. The correlat ion coefficient of linear regression equation was 0.958 1. All the correlati on coefficients of linear regression equation reached the most remarkably correl ative level.
    添加Cd浓度大于25mg·kg-1时则呈逐渐增加趋势。
短句来源
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  cadmium treatment
Out of 380 protein spots detected on 2-D gel using Coomassie staining, 11 spots were changed significantly following cadmium treatment.
      
Alterations of the protein expression patterns following 10 μM cadmium treatment were analyzed on 2-dimensional gels.
      
As in higher organisms, two major forms of metallothionein appeared to be present in the liver following cadmium treatment.
      
Induction of metallothionein and methallothionein mRNA in rainbow-trout liver following cadmium treatment
      
Apoptotic chromatin changes in chromatin structure after cadmium treatment were seen as large extensive disruptions, holes in the nuclear membrane and stickiness of incompletely folded chromosomes.
      
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Wheat (Triticum aestivum L.) seedlings were grown 7 days and 16 days in nutrient solution at two concentrations of cadmium (0.4 and 1.0 mg/L) and two concentrations of cerium (0.5 and 10.0 mg/L) in single or factorial combination. The decrease of growth was more pronounced in roots for cadmium treatment and the inhibition became serious in shoots with time going on. The combination of cadmium and cerium resulted in synergist or additive without apparent protective effects on the growth. The content...

Wheat (Triticum aestivum L.) seedlings were grown 7 days and 16 days in nutrient solution at two concentrations of cadmium (0.4 and 1.0 mg/L) and two concentrations of cerium (0.5 and 10.0 mg/L) in single or factorial combination. The decrease of growth was more pronounced in roots for cadmium treatment and the inhibition became serious in shoots with time going on. The combination of cadmium and cerium resulted in synergist or additive without apparent protective effects on the growth. The content of Ca?Mg?Mn in shoots and roots in treatment was less than that in control and was negatively correlated with cadmium concentrations in medium, while the content K?Cu?Zn?P changed little. The combination of cerium and cadmium had no apparent effect on the increase of the content of Ca?Mg?Mn. There were no apparent protective effects on the nutrient disturbance caused by cadmium. However, when cadmium was applied singly, plant accumulated a large amount of cadmium from the solution and the content of cadmium in shoots and roots was positively correlated with cadmium exposure concentrations and exposure time. The addition of cerium obviously reduced the accumulation of cadmium in shoots and roots of the seedlings. The integral uptake rate and the translocation rate also decreased in the presence of cerium, so it protected the seedlings from cadmium accumulation. This was confirmed by the time course of metal accumulation in short-term and no-mineral nutrient competitive experiment. Ten-day seedlings growing in full nutrient solution were transferred to distilled water supplemented with 2 mg/L cadmium, 5 mg/L cerium and 2 mg/L cadmium+5 mg/L cerium respectively for 24 h exposure. When two metals were simultaneously applied, cadmium accumulated in roots and shoots decreased greatly, as compared with the single application of cadmium. It proved that urder long-term exposure Ce reduced the bioaccumulation of Cd.

通过长期暴露 (7d ,16d)试验和无矿质营养元素竞争短期暴露 (2 4h)试验 ,研究镉对小麦幼苗生长影响及其生物可利用性 ,进而研究稀土元素铈对镉造成的小麦损伤的防护效应及生物可利用性的影响 .结果表明 ,镉抑制小麦生长、降低根系及茎叶矿质元素的含量 .铈对镉引起的生长抑制及营养障碍无明显的防护作用 .但铈可明显降低小麦幼苗茎叶及根系中镉的生物富集量

Reproduction of Crustaceana is a complex regulated process which can be affected in several ways by heavy metals and other pollutants. For the first time the effect of cadmium on the male germ cell of the freshwater crab ( Sinopotamon yangtsekiense ) was studied by the means of body cavity injection (Cd 2+ 1 5 μg/g boby weight) in this paper. The germ cell at the different developmental stages in the treated and control individuals had been observed by transmission electron microscopy (TEM) in order...

Reproduction of Crustaceana is a complex regulated process which can be affected in several ways by heavy metals and other pollutants. For the first time the effect of cadmium on the male germ cell of the freshwater crab ( Sinopotamon yangtsekiense ) was studied by the means of body cavity injection (Cd 2+ 1 5 μg/g boby weight) in this paper. The germ cell at the different developmental stages in the treated and control individuals had been observed by transmission electron microscopy (TEM) in order to determine whether cadmium might have a morphological effect on them during spermatogenesis. The same experiment had been done twice in the period of March to May and October to December in 1999. In the experiment, male crabs were brought from aquatic product market in Taiyuan and raised in laboratory for more than a week before treatment. The mature male crabs in middle size were chosen and injected Cd 2+ into the body cavity. The treated and control animals were dissected in different times (10 min, 0 5 h, 1 h, 2 h, 4 h, 24 h). The results showed that all kinds of observed cells had been changed ultrastructurally after 30 minutes of cadmium treatment except for spermagone, and that the longer of cadmium treatment was, the more seriously the cells had been changed in morphology. Spermagone had ultrastructural changes after two hours of cadmium treatment; and their cell membrane had been broken partly and nuclear membrane distorted and most mitochondria vacuolated after four hours of treatment. In primary spermatocyte and secondary spermatocyte, ultrastructural changes had been observed after 30 minutes of Cd 2+ treatment, and changes of organelle were distinct after one hour of Cd 2+ treatment. The damaged order of organelle of spermatocyte was: mitochondria and endoplasmic reticula firstly (30 min), nuclear membrane and nucleoli secondly (2 h), cell membrane and Golgi complex and lysosome lastly (24 h). In secondary spermatocyte order, mitochondria had been damaged firstly (0 5 h) and cell membrane and nuclear membrane and endoplasmic reticula secondly (1 h). Injected cadmium 30 minutes later, the cell membrane of spermoblast had been damaged and acrosome had been distorted and mitochondria had been shifted 4 hours later, i.e.injecting cadmium into the animals could cause all organoid of all sorts of male germ cells damaged shortly. Among five kinds of male germ cell, spermagone was the latest one to be damaged by cadmium. Golgi complex was the least to be damaged by cadmium, its ultrastructure had been observed normally in secondary spermatocyte Ⅱ and had been damaged slightly in primary spermatocyte Ⅰ after 24 hours of treatment. Cell membrane and mitochondria were affected earlier than other organelle. The changes of cell membrane and mitochondria were including cell membrance swelled seriously (eg. spermoblast) and disintegrated partly, mitochondria distorted and vacluolated and broken, some mitochondria contracted and turned smaller than normal ones, some mitochondria cristae disappeared. At first nucleus had been distorted and nuclear membrane had been expanded slightly, chromatin of primary spermatocyte had been condensated to cluster and chromatin of secondary spermatocyte had been turned free 4 hours later. Ribosome and nucleoli had been increased to three or five, and some of the latter had been shifted around nuclear membrane 2 hours later. Rough endoplasmica reticula (RER) had been vacuolated largely and turned into smooth endoplasmica reticula (SER) by disassemblying ribosome from RER, which led to the increase of SER and ribosome. There were more lysosome and vacuolus in cytoplasmic matrix and other organella had been damaged seriously twenty–four hours later. The results showed that male germ cells of the experimented animals could be damaged by injecting cadmium into their body cavity. The organella with membrane structure were easily damaged, such as mitochondria, nucleus, endoplasmica reticula and cell membrane. Among them mitochondria was damaged ea

分别于 1999年 3~ 5月和 10~ 12月 ,利用透射电镜方法 ,按 1 5 μg/g体重的剂量体腔注射Cd2 + 于长江华溪蟹 (Sinopotamonyangtsekiense)体内 ,在 10min至 2 4h之间的若干时间段取材 ,观察精子发生过程中不同发育阶段生殖细胞的变化。结果表明 :镉注射后 0 5h ,各级生精细胞就开始出现超微结构的变化 ,主要表现为线粒体肿胀与空泡化 ,高尔基体变形 ,内质网扩张和膜结构损伤等。其中线粒体损伤出现最早 ,是最易受损伤的一个敏感细胞器。

The breaks and repair of the carassius auratus's cellur DNA induced by the metal mixture were studied by using the agrose gel elecrophrosis technique and 3H-TdR incorporation experiment. The results demonstrated that DNA breaks were detected after treated by zine, lead and metal mixture, and the RNSB order was the metal mixture>Pb>Zn. The DNA repair was found among the zinc treatment, cadmium treatment, lead treatment as well as metal mixture treatment, and the order of the repair ability...

The breaks and repair of the carassius auratus's cellur DNA induced by the metal mixture were studied by using the agrose gel elecrophrosis technique and 3H-TdR incorporation experiment. The results demonstrated that DNA breaks were detected after treated by zine, lead and metal mixture, and the RNSB order was the metal mixture>Pb>Zn. The DNA repair was found among the zinc treatment, cadmium treatment, lead treatment as well as metal mixture treatment, and the order of the repair ability was the metal mixture>Pb>Zn>Cd. The mixture of the metals increased the damage to the DNA. The results also showed that the result of the DNA breaks was not conformed completely to that of the DNA repair.

采用凝胶电泳技术和3 H -TdR掺入实验研究了亚致死浓度的混合重金属离子诱导的鲫鱼肝脏细胞DNA断裂与修复作用。结果表明 :Zn、Pb和混合重金属离子引发了鲫鱼肝脏细胞DNA的断裂 ,相对断裂数大小顺序为混合重金属离子 >Pb >Zn ;Cd、Zn、Pb和混合重金属离子的处理中都检测到修复作用的存在 ,修复作用的大小顺序为混合重金属离子 >Pb >Zn >Cd ;重金属离子混合后 ,对鲫鱼肝脏细胞DNA的损伤作用增大 ,但DNA的断裂和修复结果不完全相同。

 
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