Substituting fish meal with grasshopper meal in the diet of Clarias gariepinus fingerlings

The effect of inclusion of grasshopper meal on the growth, feed conversion ratio and survival of Clarias gariepinus fingerlings of mean weight 9.71g was investigated. The results show that the best growth and food utilization indexes were recorded in the fingerling fed with 10% grasshopper meal and 30% fish meal, while the poorest growth and food utilization indexes were recorded with the diet containing 25% grasshopper meal and 15% fish meal. The best survival of 100% was observed in the diet containing 30% grasshopper meal and 10% fish meal while the worst survival of 73.3% was observed in the diet containing 25% grasshopper meal and 15% fish mea

A Stylistic Analysis of Isidore Okpewho’s The Last Duty

The paper makes a stylistic Analysis of Okpewho’s <i>The Last Duty</i>. The framework of the analysis is based on style as a choice which is one of the six rubrics identified by Azuike (1992). In this case, an individual has the freedom to deviate from the normal way of writing to have a unique presentation. This paper exposes the stylistic idiosyncrasies embraced by Okpewho in passing his message. The writer uses individualistic narrative style. Dash and ellipsis are punctuation marks also used in special ways. Figures of speech like anaphora, litotes, and rhetorical questions among others are used to beautify the work. Varieties of sentences are also displayed in the novel

Sprungbrett in ein besseres Leben? Kinderarbeit in fremden Haushalten in Nigeria

Der Artikel handelt über Arbeit von Kindern in fremden Privathaushalten in Nigeria. Er basiert z.T. auf eigenen Forschungsergebnissen aus einer von der Autorin durchgeführten einjährigen Feldstudie in Nigeria. Es wird zum einen die Frage nach den Motiven zu dieser Arbeit verfolgt. Zum anderen wird der Frage nachgegangen, ob diese Arbeit von Kindern, die als eine der schlimmsten Formen von Kinderarbeit eingestuft wird, derart reguliert werden kann, dass sie einer Arbeit unter würdigen Bedingungen gleichkommt. (DIPF/Orig.)The article deals with the topic domestic child labour in Nigeria. The text is partially based on research results of the author which she gathered during her one-year field research in Nigeria. The text addresses the question which motives children have to migrate and work as a domestic child labourer and in how far this type of work, which has been classified as one of the worst forms of child labour, can be regulated in a way that it is in accordance with work undertaken under dignified conditions. (DIPF/Orig.

The Cyber Security Evaluation of a Wireless and Wired Smart Electric Meter

In this thesis, an Experimental cyber security evaluation of Wireless Smart Electric Meter has been performed under cyber security attacks. The security integrity of data collection from EPM 6100 Power Quality Wireless Smart Electric Meter under a wireless cyber-attack was evaluated. After which the security integrity of data collection from the same Wireless Smart Electric Meter was evaluated under a different configuration. In this Thesis, we tested three different smart meters for their connectivity under different cybersecurity attacks. We compared the security integrity of the three different smart meters to measure their response under different cybersecurity attacks

Prediction of Rainfall Magnitudes and Variations in Nigeria

Rainfall data from 14 locations in Nigeria (six in the north and eight in the south) were collected for the period spanning 1980 to 2002. The data were subjected to analysis using five different methods of hydrologic forecasting namely: Fuller, Gumbel, Powell, Ven Te Chow and stochastic methods. It was found that Fuller’s method overestimated rainfall magnitude in all locations by a large margin. Powell’s method underestimated rainfall magnitude in all locations studied. Ven Te Chow’s method gave the best prediction in all cases except for Enugu in which case Gumbel’s method was found to be more appropriate. Gumbel’s method closely follows Chow’s method in accuracy for all locations. The analyses show that the maximum 1000 years rainfall is 1100mm and will probably occur in around Calabar. Variations in monthly rainfall magnitude were found to be more in the north and less in the south. It is therefore recommended that the Chow’s method and the Gumbel’s method be adopted for rainfall forecasting in Nigeria

Clastic Shelf Depositional Environment: Facies, Facies Sequences and Economic Values

Perhaps more than any other single environment, the continental shelf typifies the dynamic ‘input/output’ aspect of the earth surface processes. Clastic sediment introduced onto the shelf must bypass the various nearshore sediment ‘traps’, such as estuaries, bays, lagoons, tidal flats, etc. Once on the shelf, a complex mixture of tidal, wave, oceanic and density currents disperse the sediments, allowing some proportion to ‘escape’ over the shelf edge, into the deep ocean basins. This paper offers examination of Facies and Facies Sequences of Shelf Depositional Environment, under the two classifications: Tide-Dominated and Stormwave-Dominated Shelf Deposits. Mention is also made of the economic importance of the environment, with special emphasis on its petroleum prospectivity. Some petroleum provinces producing from shelf depositional environments were equally touched

Effective Hydraulic Conductivity for a Soil of Variable Pore Size with Depth

Two models were derived for the estimation of effective hydraulic conductivity (Ke) of a soil layer based on exponential and inverse square variation of hydraulic conductivity with soil depth. Darcy’s law was applied to a vertical soil stratum subdivided into a finite number of layers. The relationship between Ke and layer thickness is of quadratic form with R2 ≈ 1.As the layer thickness increases, the values of Ke for the exponential model increases drastically, exceeding the Ke estimate of the power model. The percentage difference between the two models assumes an asymptotic form to the y-axis at a percentage difference of 5%, as the size of layer approaches zero. power model gives lower estimates of Ke than the exponential model within soil depth range of 1.5m ≤ D ≤ 3.2m for n = 2; 0.8m ≤ D ≤ 1.9m for n = 50; and 0.7m ≤ D ≤ 1.9m for n = 100 and above. For very shallow soil stratum (D ≤ 2), the exponential model gives better and more realistic estimates of Ke than the power model; while for medium to deep soil stratum (D ≥ 2), the power model gives better estimates of Ke.http://dx.doi.org/10.4314/njt.v34i3.3

Heavy Metal Contamination Indices for oil spilled Agricultural Soils in three Local Government Areas of River State, Nigeria

Communication in Physical 2019, 4(1): 8-16 Authors: Emeka Chima Ogoko, Kelle Henrietta Ijeoma & Enete Uchenna Oliver This study evaluated the contamination indices of heavy metals in Agricultural soil contaminated with crude oil spills in three localgovernment areas (LGAs) within Rivers State, Nigeria (namely, Eleme, Ahoada and Oyigbo). Soil samples were taken at various depths (0-15cm, 15- 30cm and 30-45 cm) from the three LGAs. Concentrations of chromium, copper, iron, nickel and zinc ions were determined using atomic absorption spectrophotometry. Results obtained indicated that mean concentration of chromium ionranged from 10.53 -24.61mg/kg, copper ion ranged from 1.97-2.73mg/kg, iron ion ranged from 1329.58-1838.32 mg/kg. Nickel ion ranged from 1.07-3.03 mg/kg while mean zinc ion concentrations ranged from 0.38-3.99 mg/kg. The results also revealed thatmean concentrations of all the studied heavy metal ions were higher in oil spilled soil samples than those not exposed to spillage, indicating possible increase in soil heavy metal ions concentrations through oil spillage. Also, concentrations of heavy metal ionswere found to increase with soil depth and was attributed to natural processes. Calculated contamination factors indicated low to moderate contamination except Cr and Ni for Oyigbo samples whose CF values indicated moderate and considerable contamination. Pollution load index indicated low pollution levels for Ahoada and Oyigbo soil samples while that of Eleme waspolluted. The degree of contamination for all the heavy metals revealed low degree of contamination expect for nickel where it showed moderate degree of contamination. The ecological and the potential ecological risks were within the range of lowecological risk pollution for soil samples at the spillage sites in the three Local Government Areas

Uses and Gratifications of Home Videos among the Nigerian Teenage Audience: Implications for Cultural Development and Sustainability

The fall out of the introduction of the video cassette recorder (VCR) in the mid-1970s has been the proliferation of home video films. And the dominant audience of this unique medium today is found among children and teenagers, which have employed it for various purposes. This work studies the gratifications sought by teenagers in Enugu-North Local Government Area of Enugu State in the home video films they watch. Using the survey research design and a population of 200 this work found that the preponderant of the population use home video for diversion and relaxation, while a sizable number use it to ease tension. The content and duration of watching put in this past time are different ball games. As much as 42 percent of those polled spend 3 -5 hours a day watching films. Their dominant genres are love, comedy, sex and children films. The implication of all this for cultural development and sustainability is that our youths have become captive audiences to immorality and alien culture. The researcher recommends a stricter regulation of this medium as well as training of continuous practitioners of the industry