检索结果-南通市图书馆

Adsorption and affinity of Escherichia coli to different aggregate sizes of a silty clay soil

International Journal of Sediment Research 2013年第4期28卷 535-543页

作者： Filipe BEHRENDS KRAEMER Celio Ignacio CHAGAS Diego Julian COSENTINO Lucas Alejandro GARIBALDI Department of Soil Use and Management School of Agronomy Buenos Aires University National University of Rio Negro Andina branch 4. Argentina and National Scientificand Technical Research Council(CONICET) Department of Edaphology School of Agronomy Buenos Aires University

The sediments produced by water erosion are the main source of pollution of agricultural origin of surface water *** sediments may be associated to bacteria,compromising the quality of nearby water ***,to understand this biological contamination,it is necessary to find out the adsorption capacity and bacterial affinity to aggregate sizes that may result in a differential *** this end,in the present work,the distribution,adsorption capacity and affinity to different aggregate sizes of two strains of Escherichia coli in two liquid media of contrasting ionic strength were evaluated in a silty clay *** 2 μm,the 20—50um fraction was the one that showed the highest bacterial adsorption in both liquid media(37.9%).On the other hand,the highest values of bacterial affinity were found in the 20 to 50 μm fraction(coarse silt) in the low ionic strength media and 20—50 and >50 μm in the high ionic strength ***,the bacterial strains used revealed only some trends in the modification of these *** work contributes to the development and implementation of strategies to mitigate pollution,such as control of sediment generation and its subsequent capture in filter strips.

关键词： biological contamination Surface transport Water quality

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Effects of Antifouling Technology Application on Marine Ecological Environment

引用

Sustainable Marine Structures 2022年第1期4卷 29-34页

作者： Liangcheng Liu Ge Wang Junyi Song Bipu Hu Department of Chemistry and Biology College of ScienceNational University of Defense TechnologyChangsha410073China Institute of Special Services Naval Research AcademyBeijing102442China

Resolving the contradiction between Marine economic development and Marine ecological environment protection has become an unavoidable and sharp *** uncontrolled use of Marine antifouling technology will bring uncontrollable and even irreversible damage to the Marine biosphere,which will lead to ecological disaster and threaten the survival of human ***,it is an urgent task to find antifouling technology with lower environmental toxicity under the premise of considering *** attention should be paid to the long-term impact of mature and new technologies on the Marine ecological *** paper introduces the development status of antifouling technology,its influence on Marine ecological environment and puts forward the design strategy of comprehensive biological fouling prevention and control technology.

关键词： biological contamination Antifouling technology Marine ecological environment The risk assessment

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Mutagenic Effect of Three Invasive Species through Allium Cepa Bioassay

引用

Journal of Pharmacy and Pharmacology 2017年第5期5卷 261-269页

作者： Schirley Costalonga Jean Carlos Vencioneck Dutra Maria do Carmo Pimentel Batitucci Laboratorio de Genetica Vegetal e Toxieologica Universidade Federal do Espirito Santo Vitoria 29075-910 Brazil.

Invasive alien species are a global threat to biodiversity that affects protected areas around the world. The occupation of new environments by these plants is a problem to be solved and it is essential to investigate all the aspects that allow this successful to find solutions to this question, such as its mutagenic effects. Thus, this study aimed to evaluate the mutagenic effect of leaves extracts of Acacia mangium Willd, Artocarpus heterophyllus Lam and Eriobothrya japonica （Thunb.） Lindl through Allium cepa bioassay. For this, A. cepa seeds were submitted to continuous and discontinuous （acute and chronic） treatments in medium with water （negative control） or four concentration of each extract （1, 5, 10 and 50 mg/mL）. The mitotic index was affected at all concentrations of three extracts tested in all treatments, continuous and discontinuous. Aneugenic effects were not related to any treatment tested. E. japonica extract induced clastogenic effects at 1, 5 and 10 mg/mL in continuous treatment, 5 and 10 mg/mL in acute discontinuous treatment and at 10 mg/mL in chronic discontinuous treatment. Clastogenic effect was also observed at 10 mg/mL ofA. heterophyllus extract in continuous and acute discontinuous treatments.

关键词： Mutagenicity biological contamination acacia mangium Willd artocarpus heterophyllus Lam eriobothrya japonica(Thunb.) Lindl.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：