Groundwater quality and hydrogeochemistry of aquifers in the kwahu South District of Ghana
Chemical properties of groundwater resources were studied in the Kwahu South District of Ghana. The study used hydrochemical data employing a series of comprehensive data interpretation e.g. Bivariate plots, Schoeller and Piper diagram to obtain a better understanding of the system functioning. The physico-chemical parameters suggest that the groundwaters in the Kwahu South District are generally good for domestic use per World Health Organization (W.H.O) standards with the exception of boreholes from Nkyenenkyene (NKY and NKY 3) which have hydrogen sulphide problems. Stiff diagrams were superimposed on the map of the study area to display the area differences in water quality across the district. The following main hydrochemical processes were identified as factors controlling the chemistry of the groundwater system: dissolution, ion exchange, and reverse ion exchange. Three main hydrochemical facies were identified from the Piper diagram: Facies (I); Ca –HCO3, Facies (II); Na –HCO3 and Facies (III); Na–Cl. Three main hydrochemical groups were also identified by the Schoeller diagram: Group I, II, III. The groups identified by the Schoeller diagrams corresponded with the hydrochemical facies identified in the Piper Diagram respectively.
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Growth, chlorophyll and carotenoids contents of tea (Camellia sinensis (L) O. Kuntze) under varied light intensity in Southwest Nigeria
The nutritive and anti-oxidative properties of tea have made it the most widely consumed beverage in many parts of the world. Warm climatic conditions arising from high light intensity however, constitutes a major constraint to tea cultivation in South-Western Nigeria. Reduction in the Light Intensity (LI) is therefore, fundamental to the possible expansion of tea production in this zone. A pot experiment was carried out to evaluate the effect of different light intensities on growth, leaf chlorophyll and carotenoids contents of two tea cultivars at two locations (Ibadan and Owena). The experiment was a factorial of eight treatments; Two tea cultivars (143 and 318), Four levels of light intensity-(25%=2.40x104lux, 45%=4.57x104lux, 65%=6.75x104lux and 100%=1.04x105lux: control). These were achieved by using sheds of 4, 2, 1 and 0 palm fronds layers, respectively. The experiment was laid out in completely randomized design with four replications. Data were collected on Number of Leaves (NL), Leaf Area (LA, cm2), Plant Height (PH, cm), leaf abscission as well as chlorophyll and carotenoids contents (mg/g). The data were analyzed using descriptive statistics and ANOVA at ?0.05. The result revealed that Cultivar 143 performed significantly better than 318 with 25.23±9.74NL, 665.93±297.54LA in Ibadan and 25.38±9.82NL, 898.23±670.34LA in Owena. Tea plants under 45 and 65% LI had higher NL, LA and PH compared to those grown under 25 and 100% LI in Ibadan and Owena. Highest leaf abscission (15.44±3.89 and 23.13±7.22 dropped leaves in Ibadan and Owena, respectively) was obtained in C143 under 100% LI; while the least (6.84±3.89 and 4.78±7.22 dropped leaves in Ibadan and Owena, respectively) was obtained in C318 under 45% LI. In Ibadan, chlorophyll and carotenoids increased from 1.11±0.83 and 0.30±0.15, respectively in C318 under 100% LI to 3.15±0.83 in C143 under 25% LI and 0.6±0.15 in C318 under 45% LI; while in Owena, chlorophyll and carotenoids increased from 1.05±0.87 and 0.29±0.30, respectively in C143 under 100% LI to 2.97±0.87 and 0.83±0.30 in C318 under 25% LI. Conclusively, light intensities of 45% (4.57x104lux ) - 65% (6.75x104lux) enhanced optimal vegetative growth, reduced leaf abscission, increased chlorophyll and carotenoids accumulation of tea cultivar 143 which was more adaptable to Ibadan and Owena, Southwest Nigeria.
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Hamiltonian Mechanics systems with Three Para- Complex Structures on paracomplex Geometry
In this paper we presented an analysis of Hamilton formulas. with Three Almost Complex Structures. We have reached important results in differential geometry that can be applied in theoretical physics
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Handwritten digit recognition using neural network
Handwritten digit recognition is challenging problem researchers had been research into this area for so long especially in the recent years. There are many fields concern with numbers e.g. checks in banks or recognizing numbers in car plates, the subject of digit recognition appears. The main objective is to recognize digits in different applications. E.g. different users had their own handwriting styles where the main challenge falls to let computer system understand these different styles and recognize them as standard writing. Neural network can be proving as an effective tool to solve such problem. Neural network uses various algorithms for learning and classification; such as Back Propagation Algorithm, feed forward etc.
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Histological and ultrastructural studies on bone of mice intoxicated with nickel salts
Bone is essentially a heterogeneous system consisting of water, mineral and collagen which determine the physical properties of bone composite material. The decrease in bone weight was dose dependent after treatment with all the two salts of metal i.e. NiNO3 and NiSO4. Bone provides essential framework and rigidity to the body. The toxic substances affect the development of bone by impairing the availability of essential nutrients resulting in abnormal bone development and toxicity. The impact of nickel toxicity on bone of mice has been studied histochemically (under light and electron microscope) by using two nickel salts . Histopathologically, the necrosis to layers of decalcified bone i.e. periosteum, matrix and endosteum was observed with all two salts. The bone forming cells, lamellae and Haversian canals were also affected. The cortical width of bone section decreased as the dose of salts increased. These changes were also observed on samples of powdered dried bone of all groups with SEM. These changes were dose dependent and of the same order as mentioned above. The toxicity of nickel salts was in the order of NiSO4 > NiNO3 .
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Iconographic review of normal and pathological imaging of the hippocampus in geriatrics
The objective of this work was to provide an iconographic and narrative review of the normal and pathological aspects of the hippocampus of the elderly subject in imaging. Know how to perform a routine 1.5 Tesla MRI hippocampal study. Recognize the main hippocampal anomalies during degenerative, infectious, vascular, inflammatory, tumor, toxic and metabolic Take home message: interest of MRI in the study of the tonsil-hippocampal regions. Know the basics of the Anatomy of the Hippocampus and the Limbic System. Recognize the main hippocampal anomalies, during degenerative, infectious, vascular, inflammatory, tumor, toxic and metabolic summary The hippocampus is a small brain structure, internal temporal, playing a primary role in the mechanisms of memory. Magnetic resonance imaging (MRI) is the imaging modality of choice for the analysis of this structure. At the elderly, dementias represent the majority of causes of hippocampal abnormalities, especially atrophic, but other specific pathologies constitute differential diagnoses to be known in this population.
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ICT development and usage: managing change in organizations
Information and Communication Technology (ICT) has now been used in all walks of lives and the introduction of this technology outside of Malaysia, especially in the developed countries has matured far more. Leaping towards this gap has made Malaysian leaders in the past saw the potential of ICT and the MSC project was the stepping stone to ensure that Malaysia will not be left out in this area with potential possibilities of changing the country’s economy. This viewpoint paper will discuss mostly on the human behavior and acceptance towards change to fulfill human capital. The importance of change is to ensure the organizational development is coping to business goal and competition. Challenges of human resource acceptance or rejections toward technology in general is somehow related to business goal, thus this paper will discuss the views from many research and articles related to the subject matter.
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Identification and classification of commonly prevalent errors in operational shipping practices: A study based on literature review
Modern shipping, with increased number of vessels, faster, more sophisticated, expensive, specialized, complex operation, governed by comprehensive rules and regulations as per national and international authorities, is a vital industry carrying 90% of world trade. Although modern technology and modern navigation equipments contributed more efficient marine transportation than before but injury and fatality statics indicate that shipping remains a high risk industry. This study outlines the classification, types and commonly prevalent errors in shipping operations. Study concludes that qualification, training and development of crew members as one of the key concerns in the effort to achieve higher safety standards aboard ship.
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Image Denoising Based on PSNR and MSE Values Calculation Using Adaptive Wavelet Thresholding by Various Shrinkage Methods under Three Noise Condition
Wavelet transforms enable us to represent signals with a high degree of scarcity. Wavelet thresholding is a signal estimation technique that exploits the capabilities of wavelet transform for signal denoising. The aim of this paper is to study various thresholding techniques such as Sure Shrink, Visu-Shrink and Bayes Shrink and determine the best one for image denoising. This paper presents an overview of various threshold methods for image denoising. Wavelet transform based denoising techniques are of greater interest because of their performance over Fourier and other spatial domain techniques. Selection of optimal threshold is crucial since threshold value governs the performance of denoising algorithms. Hence it is required to tune the threshold parameter for better PSNR values. In this paper, we present various wavelet based shrinkage methods for optimal threshold selection for noise removal.
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Impact of communication on trust-commitment: Two stage model
This study aims to clarify the implication of customer relationship management. Researches show contradictory findings of their studies from existing reality in relationship model domain. That is why researchers also suggested adding some more variables in trust-commitment model. This study is an effort to fill that gap by affixing some variables in different stages in trust-commitment model. Data analyzed by testing its validity through CFA. Proposed model analyzed using structural equation modeling technique on two different stages. The result has no contradiction between the findings and existing fact of customers. Satisfaction and communication influences the trust-commitment model and findings are realistic. That if customers properly communicated about the service in time, than satisfaction increases and relationship model gets strength. Moreover, positive result enhances the chances of more usage of the same service, which is expansion. First, this study unfolds a complete holistic trust-commitment model. Secondly, proposed and proved holistic model is simple and implementable in banking industry for the expansion of business. Thirdly, items of all variable validated in this region through latest technique confirmatory factor analysis.
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