Assessment of Heavy Metals Leaching in Groundwater of Industrial Areas of Nigeria
Pollution of ground water with heavy metals from industrial activities has caused a major threat to human life exposing man to series of diseases, crippling disability and death. This study was carried out to determine the concentration of heavy metals leaching into groundwater from the industrial activities and to assess their long term effect on life of the people and the resultant aquifer. The study was carried out at 10 different locations which are all located in Ikeja industrial areas. The water samples collected were subjected to physical, chemical, heavy metal and bacteriological analysis in order to determine their level of pollution. Samples were prepared according to the standard methods using atomic absorption spectrophotometry for heavy metals determination. The result of the analysis shows that heavy metals in water samples had an average pH mean value of 5.20 indicating the acidity of the water sampled, while the average electrical conductivity, temperature and total acidity of were 0.64µs/cm 29.70oC and 29.60 respectively. The average mean concentration of the chemical and heavy metals were 0.132 mg/l, 0.040 mg/l, 0.279 mg/l, 0.148 mg/l, 0.026 mg/l, 0.0055 mg/l, 0.00266 mg/l and 0.0097 mg/l for calcium, magnesium, sodium, potassium, iron, cadmium, lead, and chromium respectively. The parameters analysed were at varying concentrations in the groundwater with parameters such as nitrate, phosphate, and pH exceeding the World Health Organization (W.H.O) standard, it was observed that the sample collected from Neimeth pharmaceuticals exceeded the permissible level for iron and lead having the value of 0.0391mg/l and 0.0627mg/l, while most of the water samples analysed falls within the permissible limit in accordance with the WHO standards. Adequate care must be taken for further prevention and handling of chemical discharges from industries. The need for the treatment of the groundwater and control of human activities in the area to prevent further contamination must also be put be in place.
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Assessment of noise prohibiting of medical images using hybridization of partical swarm optimization & bivariate shrinkage methods
Denoising of pictures got corrupted by addition of noise signals (generated by no single reason) has invariably a theme of interest for researchers. This paper proposes Associate in Nursingd classifies the potency of an rule supported quantity shrinkage additional optimized by Particle Swarm optimization (PSO).The calculator for undecimated filter bank that incorporate the reconciling sub bands thresholding additional delineated with singal threshold supported denosing performs. The manuscript evaluate recital of medical image denoising by estimate of PSNR, MSE, WPSNR and SSIM. The replication results based on trying the reproduction at MATLAB 2010A platform shows momentous augmentation in alleviation of Gaussian noise, speckle noise, poisson noise and salt & pepper noises from investigational records.
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Average Co – Isolated Locating Domination Number on Trees
Let G (V, E) be a simple, finite, undirected connected graph. A dominating set S Í V is called a locating dominating set, if for any two vertices v, w Î V – S, N(v) Ç S ¹ N(w) Ç S. A locating dominating set S Í V is called a co – isolated locating dominating set, if there exists atleast one isolated vertex in . gDcild is the number of minimum co – isolated locating dominating set of a graph G. The co – isolated locating domination number gcild is the minimum cardinality of a co – isolated locating dominating set. In this paper average co – isolated domination number ?agcild(G) is defined and, ?cild and ?agcild are obtained for binomial trees, binary trees, ternary trees and complete c – ary trees. Also the bounds for ?agcild(G) are found.
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Benefits of green roofs; a review paper
Green roofs bring ecosystem benefits in urban context, including building energy performance, improved air quality, air pollution mitigation, Urban Heat Island (UHI) mitigation, improved runoff water management, increased roof lifetime span, agricultural productivity, improved physical and mental public health, increased aesthetic values of urban areas, noise pollution mitigation, improved photo-voltaic panels efficiency and improved urban wildlife habitat. This paper reviewed, analyzed and discussed the previous studies for these benefits. The results from these studies acknowledged the capability of green roofs as a key element in order to improve the quality of urban areas. Therefore, this article recommends the implementation of green roofs in urban areas as a key factor in urban sustainability and development. Future research into green roofs technology is recommended in order to evaluate the efficiency of green roofs compared to other approaches aiming to improve the sustainability of urban areas.
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Co-management as a Strategy of Environmental Conservation of Fisheries Resources in Beaches in Mbita, Kenya
Little is known on effectiveness of community involvement in the management of Lake Victoria which supports over tens of millions of people. Co-management approach in fisheries management was adopted due to failure of the traditional fisheries management approaches. The continued decline in fish catch despite the implementation of the concept of co-management triggered the current study in beaches of Mbita District, Kenya. The objective of the study was to investigate the extent to which co-management has contributed to environmental management in beaches of Mbita District. The results of this study are useful in the formulation of policies on the management of fisheries resources at the beach and similar environments in the neighbourhood and beyond. They make important inputs to the body of existing knowledge on beach management. A cross-sectional survey design was used as a research design due to the expansive coverage of the study area. The research instruments were mainly questionnaires. The total population of the study comprised of 9,360 fisheries stakeholders who are members of 62 beaches in Mbita District, Kenya. A sample size of 384 was statistically derived from the target population to represent the entire population. Statistical sampling method was used to sample the beaches in the three divisions proportionately according to their percentage weight in terms of population size. Furthermore, a statistical theory sampling technique was used to sample beaches due to large numbers and expansive distribution along the shores of Lake Victoria. The data was analyzed using descriptive statistics and findings presented in tables. The study found that co-management approach had positively influenced fisheries resource’ conservation in Mbita District; and it established that co-management as strategy is effective in awareness creation in environmental management among the fisheries stakeholders and is key to a safe and healthy environment and active involvement of natural resource users such as the members of Beach Management Units (BMU) in environmental management. .Environmental management and participatory formulation of fisheries laws and regulations had been enhanced at the beaches in the district. The study recommended further study on co-management in other types of natural resource.
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Comparison of Genotypes and Cultural Practice to Control Iron Deficiency Chlorosis in Sugarcane
Iron deficiency chlorosis is a common problem for sugarcane (Saccharum officinarum) grown on iron deficient calcareous soils. Iron is essential for chlorophyll synthesis and any deficiencies may hinder photosynthetic capabilities of the plant that may result in yield loss. Cultivar selection and/or proper management may reduce yield loss. The objective of this investigation was to identify the cultivars and determine the effect of ameliorative treatment for controlling iron deficiency chlorosis in sugarcane in Tamilnadu, India. A field experiment was conducted for fifteen sugarcane varieties with two treatments (control and amelioration). The leaf greenness was evaluated for chlorosis by SPAD chlorophyll meter readings and also using acetone extraction method. The metabolically active iron content of leaf was analysed by 1,10-orthophenanthroline extract. The ameliorated treatment was consistently better at reducing iron chlorosis scores and yield loss. The resistant genotypes had significantly lower chlorosis scores compared to the susceptible varieties. Iron deficiency chlorosis was adequately controlled by amelioration treatment and/or using resistant genotypes may be the more effective treatment for yield improvement.
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Computer mediated communication, social support, cultural distance, and socio-cultural adjustment in international undergraduate students
The authors examined computer-mediated-communication technologies, perceived social support, perceived cultural distance, and socio-cultural adjustment in 80 international undergraduate students. Findings revealed that computer-mediated-communication technologies not elated to socio-cultural adjustment. Perceived social support and perceived cultural distance were positively related to socio-cultural adjustment in international students.
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Corrosion Fatigue Strength under the Effect of Shot Peening Treatment of 6063-T6 Al-alloy
Evaluation of 20 min. shot peening surface treatment on fatigue strength of 6063-T6 Al allay is presented under 3.5% NaCl solution from one day, one week and one month under room temperature and stress ratio R= -1. The results show that the shot peening has strong effect on the fatigue strength at 107 cycles for corroded specimens. In case of shot peening ,only 17.5% loss in fatigue strength even after submerging for one week compared with 60% of the fatigue strength was reduced in case of un shotted specimen . But for one month pre – corroded specimens, the fatigue strength was reduced by 64% in corrosion environment while shot peening improved the above reduction to be about 44%.
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Crunch branding: The innovative HR Tool to lead Indian Inc in creating favourable Employer branding and Employee retention
Innovations are increasing being looked upon to solve many an organizational problems, be it product development, service delivery ormanaging human resource. The importance is the third aspect is felt more strongly due to the fact that talented manpower which fits the organizational culture and value system is hard to find and retain. The HR professionals are adopting innovative HR practices apart from an attractive and competitive salarypackage to attract and retain talent. But one major grey area that is ignored is the image the employer is conveying to attract the desired pool and the image the present employees foster. With the serious talent crunch faced by India Inc innovative HR practices has to be adopted to create a favorable Employer brand. This paper focuses on the innovative HR practice which can be adopted to overshadow the grey areas .We, authors have coined the term ,”Crunch branding” which will be a effective tool to be used for employee retention.
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Democratic System and Peace building in Post-conflict Liberia 1997-2012
The last 15 years of post-conflict activities in Liberia had witnessed series of struggles for sustainable peace and democratic system due to mis-conduct in governance that has become barrier to the peace and security of Liberians. This study examines and analyses issues on post-conflict peacebuilding and democratic governance from1997 to 2012 in Liberia. Internet explorations, magazines, newspaper cut-out, books and journals were the instruments of data collection. Improperly disarmed, demobilised, rehabilitated and reintegrated of the ex-combatants and displaced populations coupled with different scales of human suffering and rights violation, corrupt practices, absence of true democratic governance, sustainable economy plans, etc. were identified as factors that proliferated insecurity across the country. Failure of government to impact democratically on social system metamorphosed into different agitations and protests. Poor visionary and committed leaders were attributed to the parlous state of post-conflict situations to the extent that citizens found it difficult to vote for any candidates due to lack of trust and confidence building. Suggestions for sustainable peace and true democratic practices were proffered.
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