Geoelectrical Subsurface Characterization for Foundation Purposes in the College of Agricultural Sciences (CAS) Campus, Ebonyi State University, Abakaliki, Southeastern Nigeria

The study area is underlain by shales and volcanoclastics with subordinate lenses of sandstones and sandy limestone (Abakaliki Formation) of the Albian Asu River Group, southeastern Nigeria. Geophysical investigation was carried out at the College of Agricultural Sciences (CAS) Campus, Ebonyi State University (EBSU) to determine the structural competence of the subsurface geological strata for building construction and other foundation purposes, using vertical electrical sounding (VES) survey technique of the electrical resistivity method. From the result of the survey, two major zones have been established within the study area for building construction purposes. Zone A comprises of areas around the catholic church building, EBSU primary school up to the school of post graduate studies, while zone B  is made up of areas around the EBSU secondary school, proposed student centre up to the main entrance gate which led to the Ogoja road. Zone A has been recommended for bungalows and other forms of low rising buildings, while zone B has been recommended for storey buildings and other heavy engineering structures. Overburden thickness for the two zones ranges from 1.3 m to 2.7 m, and 0.6 m to 2.7 m for zones A and B respectively. The cracks on walls of the buildings within the campus have been attributed to either the inability of the engineers to dig the foundation to the required depth or the construction of heavier structures on very weak subsurface layers which triggered off movement. Keywords: Geoelectrical, Characterization, Foundation, Ebonyi State University, Nigeria

Effects of Exchange Rate Volatility on Low Income Residential Real Estate Investment Returns in Nigeria

This paper examined the effects of Naira/Dollar exchange rate volatility on low income residential real estate investment returns in Nigeria using EGARCH model. Time series data for an 11year period between 2000 and 2010 was used in this study. The findings reveal that exchange rate volatility has a significant positive effect on low income residential real estate investment returns in Nigeria within the study period. Magnitude of volatility and volatility persistence measured.....

Dynamics of Population, Urban Agglomeration and Economic Growths in Sub-Saharan Africa : Evidence from Panel Data

Open Access via Wiley publishing agreement.Peer reviewedPublisher PD

Achieving Excellence in the Operations of Entrepreneurship Development Centres in Nigeria Higher Institutions

There have been several policy interventions in Nigeria that were aimed at stimulating enterprise development. In line with this effort, entrepreneurship syllabus was embedded in the higher institutions curriculum to stimulate entrepreneurship mind-set among Nigeria graduates. And Entrepreneurship Development Centres (EDCs) sprang up in various institutions with varying approaches to the challenges posted to them.  With almost a decade experience in entrepreneurship educational development in our higher institutions, a stock-taking of their activities and way to achieve the aims and objectives is urgently needed. It was discovered that these centres, which most institution have established have not reach their potential capacity. So, the paper takes a look the current mode of operation of the some of the centres and their impacts on their graduates. In conclusion, the paper recommend ways and manners the centres can meet the contemporary challenges and their roles in enterprise development, skill acquisition and entrepreneurship education. Key words: Entrepreneurship Development Centres, Entrepreneurship education and Enterprise development

Menarchial Age of Secondary School Girls in Urban and Rural Areas of Rivers State, Nigeria

The menarchial age of 859 secondary school girls consisting of 508 from urban and 351 from rural area of Rivers State, Nigeria were determined, using questionnaires and interview method. Data collation revealed that 69.2% (243) of the rural population were menstruating, while 70.1% (356) of the urban population were menstruating. Mean ages of menarche were 13.19±1.32 years and 14.22±1.47 years for urban and rural areas respectively .A statistically significant lower mean menarchial age was observed in urban area girls, compared to their rural counterparts. Girls from families of high socio-economic class has significantly lower mean menarchial age in both urban and rural area. The mean age of menarche was significantly higher in girls involved in vigorous sporting activity in rural areas compared to their non-sporting counterparts. Urban school girls attain menarche earlier than those in rural area. High socio-economic class and vigorous sporting activity can be predisposing factors to low and high age of menarche respectively. There is need for redefinition of high socio-economic class in Nigeria

Soil Erosion: A Review of Models and Applications

Soil erosion is a global environmental problem influenced by both natural and human factors. Modeling provides a quantitative and consistent approach to estimate soil erosion and sediment yield under a wide range of conditions, and is needed to guide the comprehensive control of soil erosion. Over the years various soil erosion models have been developed. The application of these models is dependent on the soil type and climate of the given area because models differ in complexity and input requirements. This paper reviews various soil erosion models and their applications, focusing more on the most widely applied models which are: Universal Soil Loss Equation (USLE), Revised Universal Soil Loss Equation (RUSLE) and Water Erosion Prediction Project (WEPP). The method used for this research is a review of academic articles, bulletins, conference papers, textbooks, research reports and publicly available materials on soil erosion models and their applications. The results of this study revealed that most soil erosion models have been developed for the assessment of rill and interill erosion at plot or catchment scale on agricultural lands and watersheds in terms of estimating mostly soil loss, sediment yield, erodibility (K) values, rainfall factor (R) factors, runoff rates and forecasts of likely impacts. Again, the study indicated that most previous authors on soil erosion assessment used the empirical models due to their limited data and parameter inputs. Recommendations of this study include: (1) expansion of the USLE and RUSLE models for the simulation of gully erosion and sediment processes; (2) researchers should be encouraged through grants to develop empirical models (that make use of limited data) based on rainfall (R) factor and erodibility (K) factor that provide two opposing forces in soil erosion processes; and (3) management of soil erosion based on the indigenous knowledge of the affected people and land holders

Geochemistry and Petrographic Analysis of Sandstone Facies of Eze-Aku Formation in Amasiri Area, Lower Benue through Nigeria: Implications for Provenance and Tectonic Setting.

This study was undertaken to determine the provenance and tectonic setting for the sandstones of Eze-Aku Formation in Amasiri area through evaluation and re-appraisal of the petrography and geochemistry of sandstones. Local stratigraphy and field relationship show that the lithologic succession consists of thick sequence of shale alternating with sandstone ridges trending NE-SW direction. Two units were delineated namely: Unit I which is composed of calcareous/ siliceous sandstone and dark grey shale, and Unit II which consists of friable and slightly consolidated pebbly sandstone belonging to Turonian sediments. Analysis and interpretation of the sedimentary structures, mostly cross-beds and structures of quartz grains indicates that the sandstones were derived primarily from granitic Basement complex rocks from the Oban Massif in a humid paleoclimate. Petrographic analysis show that the sandstones essentially contain quartz, feldspar and few rock fragment and are classified as subarkosic sandstone using calculated framework grains. The application of Q-F-RF diagram, suggest plutonic igneous and metamorphic rocks, from the Craton interior, recycled Orogen and transitional continental field as the provenance for the sandstones. The geochemistry of the major element oxides (SiO2, Fe2O3, Na2O, Al2O3, K2O, MgO, MnO, TiO2 and SO3) suggests the Active Continental Margin as the tectonic setting of the area. Keywords: Amasiri area, Benue Trough, sandstones, geochemistry, petrograph

WOOD ANATOMICAL STUDIES REVEAL TAXONOMIC RELATIONSHIPS, ENVIRONMENTAL INFLUENCE AND PULP POTENTIAL IN FOUR TAXA OF Mussaenda (RUBIACEAE) GROWN IN NIGERIA

Current study was carried out to assess the taxonomic, ecological significance, and paper making potential of four taxa of Mussaenda L. (Rubiaceae) viz., M. elegans, M. erythrophylla, M. philippica var. aurorae, and M. ‘Dona Aurora’ through wood anatomical studies. Each of the taxa was collected from its natural region of provenance in two different ecological zones (Derived Savanna and Tropical Rainforest) of Nigeria. Observations from different planes of sections were made and wood maceration was carried out for fibre morphology. Absent to scanty paratracheal axial parenchyma, septate fibres, pitted vessels, storied heterocellular rays, and simple perforation plates were common features in all taxa. However, multiseriate and wider rays distinguished the exotic species from the indigenous species, and the semi-diffuse porous wood pattern was a unique feature in M. ‘Dona Aurora’. Quantitative data showed considerable variations in case of fibre lengths among the four taxa i.e. M. elegans, M. erythrophylla, M. philippica var. aurorae, and M. ‘Dona Aurora’ and was recorded 0.80 ± 0.02 µm, 0.70 ± 0.05 µm, 0.65 ± 0.03 µm and 0.64 ± 0.04 µm respectively. These observations showed that all species belong to Wood Type II of Rubiaceae and support their inclusion in the Tribe Mussaendeae and Order Ixoroideae. The influence of environmental factors was evident in the significant elongation of wood vessels of samples collected from more humid areas, but with no significant effect on their paper-making potential. More so, M. “Doña Aurora”, had general scores, would be most suitable for pulp and paper making

Demographic Features, Beliefs And Socio–Psychological Impact Of Acne Vulgaris Among Its Sufferers In Two Towns In Nigeria

There is paucity of reports in the demographic knowledge, belief and socio-psychological impact of acne vulgaris sufferers towards the disorder in a black population. This is the first study from Nigeria designed to address this issue. A total of 174 facial acne sufferers completed a self-administered questionnaire, which contained several items mentioning different areas in their belief, knowledge, perception, severity, socio-psychological impact and medication attention. The findings were discussed and compared to those of the Caucasians. The occurrence of the disorder was higher in females (65.0%) compared to the males (35.0%). About 54.0% of the female subjects indicated increase in severity of the disorder during their pre-menstrual period. Also 64.9% of acne sufferers indicated increase in severity during the rainy season, while 93.1% of the population implicated stress to perpetuate the severity of the disorder. Most (75.7%) of the acne sufferers believed that it is caused by oily diet, 40.8% thought that it is hereditary, while barely 5.2% had at sometime sought doctor's attention. Non- prescription products used by acne sufferers were cleansers and cream/lotions. Psychological abnormalities experienced by the sufferers included social inhibition, depression and anxiety. Pain and discomfort are the psychosomatic symptoms. No major differences were found in the beliefs, misconception and socio-psychological impact of acne sufferers in a black population (Nigeria) compared to the Caucasians. There is need to improve the understanding of the disorder in Nigeria through health education programmes