Journal Articles

Categories

Filter:

Effect of hemiorchidectomy on the growth performance, linear body and testis measurements of boars in the humid tropics

By Machebe N S, Abonyi F O And Onyeonagu A C

This experiment determined the effect of hemiorchidectomy on growth performance, linear body and testis measurements of weaner boars. Two groups of weaner boars (Hemiorchidectomized and normal boars) were used. Hemiorchidectomy impacted negatively on growth performance indices. However, compensatory testicular growth in the remaining testis after hemiorchidectomy was shown. The study concluded that hemiorchidectomy is a painful practise and should not be practised in pig production enterprise since it hinders growth performance of the affected boars

Published: 02/12/2018

Size: 429.33KB

Lexical semantics of planting terms in Ihiala dialect of Igbo.

By Ndiribe, Matthew Onyebuchi

The study focuses on the semantic field theory with special emphasis on the planting terms in
Ihiala dialect of the Igbo language of the Igbo language. The study adopts the semantic field
theory as a tool for an efficient descriptive analysis of the subject matter. In the discussion of
the topic, efforts are made to explain the five planting terms discovered in the dialect under
discussion. These terms are iso, [kx, [gba, [gha and [zq with the items that fall under each
term. It is also discovered that activities which characterise each item rather than the terms
are exclusive. It is equally important to note that iso is the only term that belongs to tuber
crops and cannot be associated with any other planting item in the dialect. Our concern in this
study is to point out the terms that associate with each planting item

Published: 02/12/2018

Size: 56.72KB

Lexical semantics of planting terms in Ihiala dialect of Igbo.

By Ndiribe, Matthew Onyebuchi

The study focuses on the semantic field theory with special emphasis on the planting terms in
Ihiala dialect of the Igbo language of the Igbo language. The study adopts the semantic field
theory as a tool for an efficient descriptive analysis of the subject matter. In the discussion of
the topic, efforts are made to explain the five planting terms discovered in the dialect under
discussion. These terms are iso, [kx, [gba, [gha and [zq with the items that fall under each
term. It is also discovered that activities which characterise each item rather than the terms
are exclusive. It is equally important to note that iso is the only term that belongs to tuber
crops and cannot be associated with any other planting item in the dialect. Our concern in this
study is to point out the terms that associate with each planting item

Published: 02/12/2018

Size: 56.72KB

Uzo Mma: Pathway to Intangible heritage in Otobo Ugwu Dunoka Lejja

By Christian Chukwuma Opata, and Apex A Apex

This article studies the grid between tangible and intangible heritage in Otobo Ugwu Dunoka Lejja, an iron smelting site.

Published: 10/05/2016

Tags: Lejja, Otobo Ugwu, heritage, Iron smelting

Size: 4.52MB

Music as an Instrument of Punishment

By Christian Chukwuma Opata, and Sam Chukwu

This article details how music is used in correcting social vices among the Igbo

Published: 12/03/2012

Tags: Music, Punishment, Lejja, Igbo, Iron smelting

Size: 1.07MB

Comparative study on effect of chemical treatments on cassava peels for biogas production

By A.u. Ofoefule, E.l. Eme, et al

A comparative study of biogas production from cassava peels treated with different chemicals namely;
potassium hydroxide (KOH, 50% w/v) and locally available potash (“akanwu” 50% w/v) was investigated.
The untreated peels formed the control. The fresh cassava peels were degraded aerobically for 4
months before the chemical treatment, waste stabilization and charging of digesters took place. The
different variants from the treated peels were charged into 50 L metal prototype biodigesters in the ratio
of 2:1 of water to waste. The moisture content of the wastes determined the water to waste ratio. They
were charged as; Cassava peels treated with KOH (CP-K), Cassava peels treated with potash (CP-P) and
untreated cassava peels (CP-U). They were all subjected to anaerobic digestion under a 30 days
retention period and mesophilic temperature range of 25 - 37°C. Results obtained showed that while the
untreated cassava peels had cumulative gas yield of 68.7 ± 1.03 L/Total mass of slurry (TMS), the peels
treated with potash had highest cumulative gas yield of 124.1 ± 2.67 L/TMS, whereas cassava peels
treated with KOH had 111.3 ± 2.44 L/TMS. The flash point for the untreated cassava peels was on the 58th
day, while that for the CP-K and CP-P were 10 and 7 days, respectively. The general results showed that
the biogas yield from cassava peels can be enhanced by chemical treatment. Results further indicated
that locally available potash (“akanwu”) is a better chemical treatment to be employed in the biogas
production of cassava peels.
Key words: Cassava peels, biogas production, cumulative gas yield, onset of gas

Published: 12/12/2010

Size: 113.44KB

The Transport System and Socio- Economic Development

By Mba, Chike H.

The Transport System and Socio- Economic Development

Published: 06/09/1989

Size: 2.10MB

Universal Basic Education and Nation Building: The Role of Libraries in Nigeria

By Okoye, M. O.

Universal Basic Education and Nation Building: The Role of Libraries in Nigeria

Published: 02/12/2018

Size: 1.04MB

Self-Esteem: A Psychological Dimension of Female Socialization

By Maduewesi, Ebele N.

Self-Esteem: A Psychological Dimension of Female Socialization

Published: 02/12/2018

Size: 698.49KB

Analysis of Petroleum System for Exploration and Risk Reduction in the South-Eastern Inland Basins of Nigeria

By Chidozie Izuchukw Princeton Dim; K. Mosto Onuoha; Okwudiri Aloysius Anyiam; Ikenna Christopher Okwara; Ifeanyi Andrew Oha; Ikenna Anthony Okonkwo; Chukwudike Gabriel Okeugo;, and Elijah Edet Nkitnam; Bertram Maduka Ozumba

Although several acreages exist within the inland basins of southeastern Nigeria, the distribution of key petroleum system elements and associated generation, migration and accumulation processes have not been fully understood. This has hindered extensive exploration and subsequent development plans within these important hydrocarbon provinces. In this paper, outcrop, well logs and seismic data have been integrated with sequence stratigraphic and geochemical modelling techniques to allow for better understanding of the petroleum system elements and processes within the inland basins. Results from petroleum system analysis reveal the existence of two key petroleum systems namely, the Albian-Santonian system of the Abakaliki Basin and the Campano-Maastrichtian system of the Anambra Basin. Integrated analytical studies using sequence stratigraphic and geochemical modelling techniques unravelled the presence and distribution of source, reservoir, seal packages and associated generation, migration and accumulation processes. Structurally, the presence of hanging walls, footwalls, horst blocks and collapsed crest trapping systems provided both possible hydrocarbon migration pathways for generated hydrocarbons and good entrapment for hydrocarbon accumulation. Common Risk Seg-ment (CRS) maps indicate zones of low, moderate and high risks intervals, which are prospective and favourable for hydrocarbon exploration. This study thus, provides a guide to oil and gas exploration and potential in the inland basins of Nigeria.

Published: 29/03/2018

Tags: Albian-Santonian system; Campano-Maastrichtian system; Abakaliki Basin; Anambra Basin; Common Risk Segment Maps

Size: 3.22MB

Water Quality Assessment and Resource Potentials: the Case of Aba–Urban and its Environs, Niger Delta Basin

By Ugochukwu Paul Agharanya; Chidozie Izuchukwu Princeton Dim

The quest for improved water supply to cater for the ever increasing population has given rise to the assessment of water quality and resource potentials in Aba-Urban and its environments. The area, which lies within the Niger Delta Basin is underlain by the Benin Formation that is highly aquiferous. Samples of sands and water were subjected to sedimentological and hydrochemical analysis, respectively. Result reveals that the aquifer is thick (over 100 m) and unconfined. The computed aquifer parameters indicate high yielding clean-sands with hydraulic conductivity values ranging from 1.13×10-4 to 5.70×10-3 m/s. The specific discharge is about 14.2 m/year while the average linear groundwater velocity is calculated to be 53.46 m/year. Hydrochemical investigations carried out on water samples from Aba River and the groundwater system revealed low dissolved geochemical constituents. Although, there is a slight increase from the north to the southern part along the flow path. In general, the groundwater is relatively enriched in Ca, MgHCO3 ions and is predominantly of bicarbonate constituents. However, in some places Cl ions dominate over HCO3 ions. This is common where the water has come in contact with domestic sewage. This kind of contamination is also accompanied by elevated concentration of NO3 ions. Generally, the groundwater in most cases meets the standard for human consumption and is a better alternative to surface water. Consequently an increase exploitation of the prolific Benin aquifer through more hygienic and safe methods will surely be the best way of improving the domestic water supply situation in Aba City.

Published: 19/03/2018

Tags: aquifer; groundwater; hydrochemistry; hydrologic cycle; water quality; resource and potential

Size: 363.44KB

Insight into sequence stratigraphic and structural framework of the onshore Niger Delta Basin: Integrating well logs, biostratigraphy, and 3D seismic data

By Chidozie Izuchukwu Princeton Dim; K. Mosto Onuoha

Stratigraphic and structural interpretative studies have been carried out within the paralic sequence of Agbada Formation in the Niger Delta Basin. The method of study involved integrating sequence stratigraphic techniques with well logs, biostratigraphy, and 3D regional seismic data obtained from several producing fields in the Coastal Swamp depobelt of the onshore Niger Delta Basin. This was targeted at establishing regional sequence stratigraphic and structural framework from well log correlation and seismic mapping so as to better define hydrocarbon leads.Well log correlation using stratigraphic bounding surfaces such as maximum flooding surfaces (MFSs) and sequence boundaries (SBs) indicates that the stratigraphic package was deposited within the Middle to Late Miocene (8.5 to 12.1 Ma) age. Recognized depositional sequences revealed differential thickening and thinning of the associated system tracts (lowstand system tract (LST), transgressive system tract (TST), and highstand system tract) (HST)). This observed stratal behavior has been attributed to the influence of syndepositional tectonic structures that characterize the Coastal Swamp depobelt, which lieswithin the extensional zone. Flattening of MFSs at various ages indicates observable basinward shift of the depositional center. The genetic units of LST and HST serve as good hydrocarbon reservoir whereas HST and TST constitutes mainly the source and seal packages rocks in the area. Structural interpretation revealed the occurrence of simple/faulted rollover anticline, collapsed crest, regional hanging wall and footwall, horst block, and subdetachment fault structural styles that constitute the key hydrocarbon entrapment mechanisms. Structural top maps show fault-dependent closures which dominate the extensional zone, which could form possible hydrocarbon leads and prospects that should be targeted during exploration studies for development.

Published: 11/07/2017

Tags: Sequence stratigraphy framework; Structural framework; Entrapment mechanism; Coastal Swamp depobelt; Niger Delta Basin

Size: 1.43MB

Influence of subcontracting constraints on the performance of manufacturing industries in Nigeria

By Victor Chukwunweike Nwokocha, and Iganatius Ani Madu

In this paper, an attempt has been made to show the influence of subcontracting
constraints on firm performance in Nigeria. The paper in line with the literature
identified a number of constraints hindering an effective subcontracting arrangement
in the study area. While the constraints were found not to have affected the use of
subcontracting in the country, low capital intensity, disclosure of commercial secrets,
poor services and interest conflict were found to have restricted subcontracting
arrangements in the study area to sharing of equipment and short-term contracts.
These constraints however were found not have affected the performance of
manufacturing industries in the study area. This paper keeping in mind the findings
of this study suggested that manufacturing industries in Nigeria should invest more
in machineries and tools so as to increase subcontracting co-operations among
industries.

Published: 26/09/2015

Size: 547.53KB

A Study of the Favourite Activities of Primary School Pupils

By Maduewesi, Ebele N.

A Study of the Favourite Activities of Primary School Pupils

Published: 28/03/2018

Size: 426.92KB

The Igbo View of the Child

By Maduewesi, Ebele N.

The Igbo View of the Child

Published: 28/03/2018

Size: 1.03MB