检索结果-南通市图书馆

Risk Factors Contributing to Microbiological Contamination of Boreholes and Hand Dug Wells Water in the Vina Division, Adamawa, Cameroon

引用

Advances in Microbiology 2021年第2期11卷 90-108页

作者： Tangwa Bernard Viban Okah-Nnane Ndode Herman Tangwa Clotilda Layu oumarou palou madi Emmanuel N. Nfor Manchang Tanyi Kingsly Bah Germanus Ngu Ngwa Victor Ngakou Albert Institute of Agricultural Research for Development Ngaoundere Cameroon Department of Chemistry University of Buea SWR Buea Cameroon Faculty of Agriculture and Veterinary Medicine University of Buea Buea Cameroon University of Ngaoundere Ngaoundere Cameroon

This study examined the sanitary conditions of public boreholes and hand dug wells water in relation to pathogenic bacteria isolated in water samples. To assess the suitability of drinking water, sanitary inspection of surroundings of the sources was conducted, membrane filtration technic was used to trap the microorganisms in the water sample and other standard microbiological technics were applied to check the heterotrophic plate counts, total coliforms, fecal coliforms and some pathogenic bacteria in the samples. It was observed that there were no delineated protection zones around many boreholes (61.19%) and in almost all hand dug wells;thus, hand dug wells were pruned to more contamination than boreholes. Heterotrophic plate counts of boreholes were significantly different between (p E. coli 157H in some. Risk assessment of factors contributing to water contamination showed that: pumps manipulation with feet, other sources of contamination such as wastewater dumps, within 10m were significantly associated to boreholes contamination with Salmonella spp, Staphylococcus aureuse, fecal coliform (p = 0.01);in hand dug wells, presence of latrine or septic tank soak-away within 10 m of the wells, poor depth and lack of internal lining, uncapped wells, presence of trees near the wells, animal and birds feces, were significant and associated to contamination with Salmonela spp., B. cepaceae, S. aureus E. coli 1 (p < 0.05). Generally water collection points are marked with very poor sanitary conditions and this situation may not change unless the contaminating risk factors are fixed and sanitary measures are taken.

关键词： Boreholes Hand Dug Wells Risk Factors Sanitation E. coli 157H Public Health

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

Techniques of Domestication and Carbon Sequestration of Jatropha curcas Associated with Vigna unguiculata in Marginal Soil of Garoua Region, Cameroon

引用

Journal of Life Sciences 2016年第5期10卷 245-259页

作者： Tchobsala Megueni Clautilde Souare Konsala Njintang Yanou Nicolas Sadou Ismael Patrick Prudent palou oumarou Faculty of Science University of Ngaoundere P.O. Box 454 Cameroon Faculty of Science University of Maroua P.O. Box 814 Cameroon Institute of Agricultural Research and Development Maroua P.O. Box 33 Cameroon Institute of Agricultural Research and Development Garoua P.O. Box 415 Cameroon

In order to reduce the increase of fuel prices, and improve the living conditions of the population, a study was carried out by Convention No. 1/IRAD/PCS ESA2-SDCC in the region of Garoua in Cameroon. The study aimed to characterize the behaviour ofJ. curcas associated with V. unguiculata in marginal soils in the Sahel region in order to improve the livelihoods of the farmers and promote its domestication in rural areas. It also aimed at pointing out the influence of two implantation techniques of d. curcas on the germination, the different quantities of NPK and cow dung, planting techniques and association with V. unguiculata var. lori on growth parameters of development and yield of J. curcas on the degraded marginal soils in the region. The experimental design was a completely randomized block with five levels of fertilization （F0： control; FI： 50 g; F2：100 g of NPK 15-20-15; F3：1 kg and 2 kg of cow dung） per plant. Two types of establishment propagator （Ge） and direct seedling （Se） with three replications were used. Data were analysed by Stratigraphic ＋ and XLSTAT. Results showed that the propagator germination was higher than the direct seeding, 95% and 40% respectively. The Principal Component Analysis （PCA） of the parameters of growths and yield of J. curcas showed high correlation between the production of the leaves and the length of the leaves （R = 0.861; P 〈 0.001）. These parameters were correlated with the Biplot （F1 and F2） to 53.24%. It was opposed to the positives and imperfect correlation between the height and the recover parameters （R = 0.486; P 〈 0.05）. The treatments 100 g of NPK per plant and 2 kg of cow dung per plant induced strongly the development and yield ofJ. curcas and V. unguiculata adapted to marginal soils.

关键词： Domestication Jatropha curcas culture association production carbon sequestration Garoua Cameroon.

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

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

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：