Archives-February 2012

Linear model of cadmium content of soil samples in five commercial motor parks in some cities in South-eastern Nigeria were studied using analysis of variance and least significant difference test. The results showed that the mean values of three out of the five samples investigated and modeled were statistically significant at 95% probability level. Three of these five samples when compared with the cadmium permissible limits of 0.01 mg/kg were statistically significant at 95% probability level using the calculated least significant difference of 0.112 mg/kg. From the results of the analyses of the study, the Cadmium content in these choice locations were greater than the permissible limit of 0.01 mg/kg for Cadmium level in the environment.

Customer Value is a topic of growing interest to managers and researchers in business marketing. Traditionally, research on Value in business markets have been oriented towards the assessment of how suppliers create value for their customers and how customers perceive superior value in a suppliers offering compared to competition (the buyers perspective) Anderson & Narus (1999), Ulaga and chacour (2001). In recent years both academics and managers have increasingly emphasized the need to consider customers as a key asset of the firm Rust & Lemon (2000).

Anamorphs are common and widespread. They are among the most successful groups of moulds with important roles in natural ecosystems and the human economy. The present paper deals with the study of aeromycological study of Dongargarh hill-top with the help of petriplate method in one year one year from May 2010- April 2011. 31 fungal floras were isolated during the investigation period. Only anamorphic fungal group contributes major 24 out of 31 fungal species. It was also observed that 341 colonies of anamorphic fungi isolated out of total 389 fungal colonies. The fungal species Cladosporium oxysporum, Fusarium Aspergillus, Penicillium,Curvularia,Cladosporium, Trichoderma etc were observed.

A highly efficient and expedient protocol for the synthesis of hydrazones catalyzed by citric acid is investigated via reaction of hydrazine hydrate with different carbonyl compounds. The use of inexpensive, non-hazardous easily available citric acid as a catalyst for the synthesis hydrazones employing grinding technique is reported. The structures of the synthesized compounds are established on the basis of physical, chemical and spectral data.

In this study effect of exhaust gas recirculation (EGR) on performance, emission and combustion of a single cylinder, four stroke spark ignition are investigated. EGR is one of the most effective means of reducing NOx emissions from IC engines and is widely used in order to meet the emission standards. In the present work, experimental investigation has been carried out to study the performance, emission and combustion characteristics by exhaust gas recirculation in a SI engine using various catalytic coatings and different EGR flow rate. Experimental results show that NOx emissions were reduced when the engine was operated with cooled EGR. The maximum NOx reduction for copper coated engine with 10% EGR is about 45 % lower than standard engine. The other catalytic coatings like chromium and nickel shown the NOx reduction of 7 % and 4 % lower than standard engine.

This article is concerned with the economic impacts of tourism industry, especially in developing countries. It initially reviews the concept and using a model, it deals with the factors affecting the economic impacts associated with tourism. The research findings indicated that with short-term and long-term strategic planning and using the specific abilities and tourism products of developing countries, which suffer from some indices as unemployment, limits in earning and currency flows, inflation and other problems, most of their economic problems can be solved.

In this paper, finite element model for flow of a viscous lubricant in a slider bearing is considered as a problem. For this problem, two different types of finite element models have been presented which are the velocity-pressure finite element model, with (u,v,P) as the primary nodal degrees of freedom and the penalty finite element model with (u,v) as the primary nodal degrees of freedom. Quadrilateral elements are used since they are more reliable for pressure as well as for velocity fields in the penalty finite element model.

A great yield of tomato is lost to disease of varied causes annually. This underscores the need for continuous study of factors affecting the epidemiology and prevalence of these diseases for effective management. This study was conducted in two environments of Aboh and Ahiazu Mbaise local Government Areas of Imo State Southeast, Nigeria. The aim was to investigate the fungal pathogens associated with tomato plants. The plant leaf samples were cultured on Saboraud Dextrose Agar (SDA) and Brain Heart Infusion Agar (BHIA) and incubated at room temperature for 3-5 days. Result revealed that the most prevalent species were Fusarium (75%) and Curvularia (55%) while Alternaria (15 %) was least .The pathogenecity test carried out showed that Fusarium species were the most pathogenic ; followed by the Aspergillus and Curvularia Species . The data generated from this study will help local farmers in Mbaise in minimizing yield losses.

One of the factors effective on success of the organizations is their human resources which has direct effect on productivity of the organizations. For this reason, performance of human resources is very important. In this paper, efficiency of personnel of Islamic Azad University, Tehran Sciences and Research Branch has been studied with approach of human resources. For efficiency analysis and ranking, two combined models of DEA and artificial neural networks (ANNs) were used. At first, analytical results of two models were compared with DEA and then two trained network models were compared with each others. Results of this research show that training method of the second model compared to the first model show potential of neural networks in identification of model, estimation of function, prediction allow to use it in order to assess the organizations with decision making branches, therefore, it can be presented as top model.

The present study is conducted to analyze the relationship between organizational justice and staff happiness in the Institutes of Standard & Industrial Research of Qom province and Jihad Agricultural Management in Qom city. This research is classified among descriptive surveys and was a correlation type. Research sample was selected simple random from 30 members of The Institute of Standards & Industrial Research and 52 members of Jihad Agricultural Management in 1390. The tool to gather the data was Questionnaire and SPSS software has been used to analyze the descriptive and analytical data. Organizational Justice Questionnaire (Newhof and Mormon 1993) was used to evaluate organizational justice and Oxford Happiness Questionnaire (localized by elites) to evaluate staff happiness. In order to analyze the data, a relational approach (correlation and regression) was used. The results show a positive and significant relation between organizational justice and staff happiness in both Institutes; so the research hypothesis was approved. In the meantime, factor analysis is used to identify happiness factors and to confirm organizational justice classifications.Since the relationship between Organizational Justice and Staff happiness has been well-recognized in this research, it is necessary to apply organizational justice and the ways of applying them to increase the staff happiness. In this line, some recommendation for managers and organization authorities are provided.