January 2014
Evaluation of allelopathic effect of Eclipta alba (L.) Hassk on biochemical activity of Amaranthus spinosus L., Cassia tora L. and Cassia sophera L.
A study was conducted to assess the magnitude of suppressing ability of Eclipta alba (L.) Hassk. on some selected weeds of Aligarh namely, Amaranthus spinosus L., Cassia tora L. and Cassia sophera L. The research finding was conducted to evaluate the effect of aqueous leaf leachate and organic fractions of donor plant on biochemical activities (carbohydrate content, chlorophyll content and protein content). The result...
January 2014
Heavy metal bioaccumulation and biomarkers of oxidative stress in the wild African tiger frog, Hoplobatrachus occipitalis
Human activities can have dramatic effects on animal populations around urban areas with heavy metal contamination being a primary cause of harm. Amphibians, as residents of aquatic systems and with their semi-permeable skin are especially susceptible to heavy metal contamination. To better understand the effect of heavy metals on Wild African Tiger frogs (Hoplobatrachus occipitalis) and the resulting production of...
January 2014
Geophysical study of saline water intrusion in Lagos municipality
Saline water intrusion presently constitutes serious concerns in the Lagos municipality just like many other coastal cities, thus necessitating its intervallic study. The present study involving 52 borehole logs (consisting of natural gamma and electrical resistivity components) was aimed at delineating intruded and vulnerable zones. Saline water columns defined by low resistivity values in the range of 0.1 and 20...
January 2014
Geographic information system planning and monitoring best practices for West Africa
Phenomenal increases in the number and sizes of urban settlements across the West African coastal region are leading to massive reclamation of swamps and destruction of natural ecosystems. Poor urbanization policies, inefficient planning and monitoring technologies are evident. The consequences include some of the worst types of environmental hazards. Best urbanization practices require integrated planning...
January 2014
Assessment of some heavy metals and physicochemical properties in surface soils of municipal open waste dumpsite in Yenagoa, Nigeria
The current study was designed for the assessment of lead, cadmium and chromium and some physicochemical properties of soils collected from an open dumpsite in Yenagoa, Nigeria. Surface soil samples at two depths (0-10 and 10-20 cm) were randomly collected at the dump field and control site, and were analyzed for physicochemical parameters and contamination by lead, chromium and cadmium using standard analytical...
January 2014
Evaluation of the performance of improved sweet potato (Ipomoea batatas L. LAM) varieties in Bayelsa State, Nigeria
This study was conducted using randomized complete block design with three replications each in two locations (Amassoma Wilberforce Island and Yenagoa, Bayelsa State) to evaluate the performance of improved sweet potato varieties (Ex-Igbariam, TIS 8164, 199004-2 and TIS 87/0087 including Kukunduku local) from March to June 2010. There were significant differences among varieties at both locations and across locations...
January 2014
Heavy metal content of selected African leafy vegetables planted in urban and peri-urban Nairobi, Kenya
African indigenous vegetables planted along Nairobi Rivers are suspected to absorb metals from industrial and domestic effluent. Ten (10) of the commonest vegetables in Kenyan markets grown along these rivers and the soils in their rhizosphere from 25 sites were analyzed for Pb, Cu, Zn, Cd and Cr. Soils were air-dried then leached using 0.05 M EDTA, filtered and analysed in AAS. Vegetables were oven-dried, ground, ashed...
January 2014
Rainfall variability and rubber production in Nigeria
The role of rainfall in plant could not be overemphasized because rainfall determines the amount of moisture present in the soil which is ultimately made available to plants. The aim of this paper was to determine the variability of rainfall and its effect on rubber production in Nigeria. Towards achieving this aim, time series data from 1971 to 2009 were collected on mean annual rainfall and total annual rubber...
January 2014
Climate change and decline in water resources in Kikuletwa Catchment, Pangani, Northern Tanzania
The sensitivity of hydrology and water resources to climate variation in Kikuletwa Catchment, Pangani Basin, northern Tanzania was assessed using 30 years of river level and climate data as well as questionnaire, focused group discussion (FGD) and participant observation. The results show a significant association between mean annual river level for Kikuletwa River and mean annual rainfall in the past thirty years. The...
January 2014
Removing carbon dioxide from a stationary source through co-generation of carbonate/bicarbonate: The case of Mugher cement factory
The cement industries alone emit 5% of the world’s total green house gases. In Ethiopia, the current CO2 emission from this sector is about five fold of the countries overall CO2 emission in 2002. Mugher cement factory (MCF), a case study plant in this paper, alone emits 463,844 tons of CO2/year on average based on emission test and mass balance performed. Yet it accounts for less than 3% of the current CO2...
January 2014
Reginol interpretation of river Indus water quality data using regression model
Water samples were collected from river Indus over 591 km2 from Kashmor to Keti Bandar/Shah Bandar in the province of Sindh, Pakistan, during 2008 and 2009 on seasonal bases. These samples were analyzed for 12 water quality variables including physical and chemical parameters. Then correlation study was carried out and correlation co-efficient “r” was determined using correlation matrix to identify the...
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