Open Access Original Research Article

The State of Farm Raised Catfish Consumption in Ghana: A Case of the Ashanti Region

Hayford Agbekpornu, Doris Yeboah, Abednego Pappoe, Joseph Effah Ennin, Mathew Oyih

Current Journal of Applied Science and Technology, Page 1-14
DOI: 10.9734/CJAST/2017/37312

This study aimed to explore the status of farmed raised catfish consumption in Ghana focusing on the Ashanti region as a case study. Data was collected using a semi-structured questionnaire from 240 respondents from 4 out of 7 zones in the region. The method of data collection were purposive, stratification and simple random sampling. The study employed descriptive analysis as well as logistic regression for data analysis.

Twenty percent of the sampled population were men and the rest were women with age range between 22 to 84 years. The respondents were sampled from various professions while some were students. About 30% of sampled respondents had attained a high educational level (tertiary) while 36% had attained basic level. Most respondents preferred fish as a regular source of protein. A higher percentage of the respondents (73%) consumed farmed fish, mainly tilapia and catfish. Results points out that about 59% of the consumers of farmed fish consumed catfish. Furthermore, 62% of consumers of catfish had ever consumed fresh catfish. Reasons provided by those who did not eat fresh catfish are: it taste less better than captured catfish from the wild, has an unpleasant odour and slimy in nature, is a taboo due to religious belief, and higher price. Most respondents (63%) who patronized catfish preferred smoked catfish. About 80% of the respondents are willing to eat catfish if it is processed. The logistic regression results showed that the determinants for consumption of processed catfish are age, gender, where fish is consumed, and frequency of farmed catfish purchased. It is recommended that government should come out with policies, plans and strategies as well as incentives to enable fish farmers produce and process catfish. There should be the developing of projects out of the aquaculture development plan and other plans with emphasis on catfish production including the production and supply of quality catfish fingerlings to farmers. Since a greater percent of consumers preferred processed catfish compared to fresh, value addition to the catfish product should be encourage for higher patronage.

Open Access Original Research Article

Investigation on the Effect of Aluminium Smelting on Air Quality at Rusal Alscon Ikot Abasi, Akwa Ibom State

W. A. Akpan, E. G. Ikrang, D. K. Uko

Current Journal of Applied Science and Technology, Page 1-5
DOI: 10.9734/CJAST/2017/17162

This research work addresses the impact of Aluminium smelting on air quality at Ikot Abasi environment arising from the operational activities of Rusal-Alscon plant. The research was conducted by the collection of in situ air quality samples from selected locations close to the plant. Air quality data, 60, km at Ikot Usung Ikono, Uyo from the plant location was used as a control sample. Air quality results showed marked differences in the air quality around the plant, compared to the standard and the control sample. This research therefore recommends adequate monitoring of the plant operations by the Nigerian Environmental Standards and Regulations Enforcement Agency (NESREA) to ensure conformity to its emission standards.

Open Access Original Research Article

Effect of Metakaolin on the Strength Properties of Sisal Fibre Reinforced Concrete

Musa, Abdullahi, Duna, Samson

Current Journal of Applied Science and Technology, Page 1-12
DOI: 10.9734/CJAST/2017/36189

This paper presents the results of the investigation into the effect of metakaolin on the strength properties of sisal fibre reinforced concrete. Plain control concrete and binary concrete mixes (containing 5, 10, 15, 20, 25 and 30% metakaolin by weight of cement) were produced and cured for 7, 14, 28, 60 and 90 days respectively. A total of one hundred and five (105) cubes and beams were cast and tested for compressive strength, flexural strength as well as the density. The results showed that generally strengths decrease with increase in metakaolin content and increase with prolong curing period. The results also showed that, the density of the concrete decreases with increase in metakaolin content. Concrete cubes made with (5-10)% metakaolin and cured for beyond 28 days, achieved the 28 days target strength of 20 N/mm2. The optimum replacement level was observed at MK-10% cured for beyond 28 days. The data obtained were subjected to regression analysis and analysis of variance (ANOVA) in the MINITAB 16 statistical software. Models were developed to predict compressive strength, flexural strength and concrete density with curing period and metakaolin content as predictors at 5% level of significance, the result showed that, there is no significant difference between the predicted and the experimental values. The result of the regression analysis for compressive strength, flexural strength and density test indicated metakaolin and curing age are good predictors in the models developed.

Open Access Original Research Article

Reducing the Cost of Exploring Neighborhood Areas in Dynamic Local Search for SAT

Abdelraouf Ishtaiwi, Ghassan Issa, Wael Hadi

Current Journal of Applied Science and Technology, Page 1-9
DOI: 10.9734/CJAST/2017/38361

Stochastic Local Search (SLS) algorithms are of great importance to many fields of Computer Sciences and Artificial Intelligence. This is due to their efficient performance when applied for solving randomly generated satisfiability problems (SAT). Our focus in the current work is on one of the SLS dynamic weighting approaches known as multi-level weight distribution (mulLWD). We experimentally investigated the performance and the weight behaviors of mulLWD. Based on our experiments, we observed that the 2nd level weights movements could lead to poor performance of mulLWD, especially when applied for solving large and harder SAT problems. Therefore, we developed a new heuristic that could reduce the cost of the 2nd level neighborhood exploitation known as partial multi-level weight distribution mulLWD+. Experimental results indicate that mulLWD+ heuristic has significantly better performance than mulLWD in a wide range of SAT problems.

Open Access Original Research Article

Design of Adaptive Control System Based on Model Reference Stick Slip Vibration

Huang Xun, Yang Xiao, Li Jianghong, Li Changhao

Current Journal of Applied Science and Technology, Page 1-11
DOI: 10.9734/CJAST/2017/38422

The stick-slip vibration is a common vibration mode of the drill string system during the drilling and it is extremely destructive. The drilling efficiency will be greatly reduced, if the drill gets a bit damaged and the drill rod breaks when the stick-slip vibration occurs. In order to solve this problem, a two-degree-of-freedom focused mass model was established. The controller based on the model reference adaptive control method was designed. The simulation experiment was completed to prove the rationality of the established stick-slip vibration model and the correctness of the control method. The control equipment was developed and the tests above on the well were completed. The experimental results shows that the designed stick-slip vibration control system has validity and stability.

Open Access Original Research Article

The Effect of Acanthus montanus Leaves Extract on Corrosion of Aluminium in Hydrochloric Acid Medium

G. I. Udom, G. A. Cookey, A. A. Abia

Current Journal of Applied Science and Technology, Page 1-11
DOI: 10.9734/CJAST/2017/37723

The inhibitive effect of Acanthus montanus leaves extract on aluminium corrosion in hydrochloric acid solutions was studied using weight loss technique. It was found that the leaves extract retards the acid induced corrosion of aluminium. Inhibition efficiency was observed to increase with increase in inhibitor concentration but decreased with rise in temperature. Thermodynamic studies revealed that the corrosion inhibition may be due to the spontaneous physical adsorption of the extract constituents on aluminium surface. Adsorption was found to obey Temkin isotherm. A first–order mechanism has been deduced from the results at all temperatures studied.

Open Access Original Research Article

Marphometric Analysis and Prioritization of Micro Watersheds of Chandanwari Watershed of lidder Catchment Using Geospatial Techniques

Mohd Ayoub Malik, Bashir Ahmad Pandit, Sheikh Umar, Saika Manzoor

Current Journal of Applied Science and Technology, Page 1-12
DOI: 10.9734/CJAST/2017/38589

Himalayas are highly susceptible to natural hazards that are caused by the action of water such as floods, soil erosion and siltation of the hydro-electric power dams because of their mountainous nature. Soil erosion is the most devastating hazard affecting the livelihood of the people living in these regions. Therefore strategies need to be developed to reduce the impacts of soil erosion in these regions. The present study demonstrates the use of satellite based remote sensing data coupled with the observational field data framework to estimate the soil erosion susceptibility of the micro watersheds of the Chandanwari watershed of Lidder catchment falling in the western Himalaya, using geographical information system (GIS). In this study, watershed morphometry was used as an input to prioritize the micro watersheds on the basis of their different susceptibilities to soil erosion. The prioritization process identifies the highest priority watersheds in which to conduct management. Morphometric analysis has been commonly applied to prioritization of watersheds as Watershed characteristics of a basin represent its physical and morphological attributes that are employed in synthesizing its hydrological response. Various morphometric parameters, namely linear parameters and shape parameters have been determined using Survey of India (SOI) toposheets at 1:50,000 scale for each micro-watershed and assigned ranks on the basis of value/relationship so as to arrive at a computed value for a final ranking of the micro-watersheds. The analysis has revealed that the total number as well as total length of stream segments is maximum in first order streams and decreases as the stream order increases. Horton‘s laws of stream numbers and stream lengths also hold good. Results of prioritization of micro-watersheds based on morphometry analysis show that micro-watershed CMW11, CMW12, CMW13, CMW14 and CMW7 fall under the category of very Severe erosion class; CMW3, CMW4, CMW5 & CMW6 fall under severe erosion class and are more susceptible to soil erosion and are in dire need of management and planning so that the problem of environment degradation in them can be addressed.