Evaluation of the Relation between Water Pollution and Economic Growth in Developing Countries and Developed Countries

Most studies suggest a form of inverted U relationship between environmental quality and economic growth, entitled as "the environmental Kuzne's curve (EKC)" Given the importance of maintaining environmental quality along with economic growth, this study studies the level of water pollution and economic growth both in developing and developed countries during 2001-1980. Based on theoretical foundations of environmental EKC curve, as in addition to the income variable, the population variable, is also considered as an exogenous variable and the integration method is used for estimating the model. The results indicates that the economic conditions prevailing in both groups of countries are consistent with the EKC. Curve and it this curve. The turning point in developed countries is at 10,622 dollars based on statistical findings, most of the studied countries in this group have crossed the turning point. But as for developing countries, the turning point in this curve is estimated at approximately 901 dollars of national per capita income. Statistical analysis of existing data showed that many countries at this group still have not reached the turning point of the EKC curve and are far from it. Using the results, it seems necessary for the developing countries to adopt more cautious policies to grow and develop their economies, in order to promote the growth of national per capita income, as well as policies to improve quality of water resources, or at least prevent their contamination

The impact of Information and Communication Technologies on Environmental Pollution in D8 Countries

Nowadays the term of information and communication technology with its role in reduction and elimination of air pollution is concerned as a critical objective environment and environmental economy that seriously influenced on various aspects and dimensions of human life during recent years. the main hypothesis  states that Applying information and communication technology can help to achieve improvement in quality of environment and reduce environmental pollution but observation, evaluation, assessment along with analysis to clarify the measure and intensity of influences on the environment indifferent countries with various levels of development needs to have case study on this issue. The present paper has been compiled after theorical basis investigation and exploiting related module using method of panel data and F test in order to obtain estimates and values of impression of information and communication technology on environmental pollutions in D8 countries including iran during the period of 1994 – 2014. The results showed that by increasing of GDP the rate of pollution raises accordingly. Besides a mean relation between information and communication technology and reduction of air pollution has been obtained as well. Positive feature of the GDP per capita coafficiency logarithm presents the trace of increasing air pollution in lieu of GDP. Another words, the amount of pollution has risen in lieu of per capita income. This coefficient is estimated 1.927 in D8 countries. Thus it can be explained that developing and improving information and communication technology apart from positive subordinated results and achievements in the field of economy call hold proper and desired and optimistic environmental endeavors as well

The relationship between renewable energy use and economic growth in OPEC countries

The amount of energy consumption per growth affects on economic growth in all countries, so the access of world countries to variety of energy is essential for economic growth. Numerous studies in a world have shown that the pace of growth of energy consumption will largely depend on the level of economic growth. The present study aims to investigate on the researches that has been done on impact of the renewable energy consumption on the economic growth, all over the world. And after that the relation between renewable energy consumption and growth in a selected countries of OPEC members during 1985-2014. With unit root test determine stability of data and proved that all data are stable. The linear Granger causality test indicate unidirectional causality from energy consumption to growth. F limer and hausman test also stimate for determining the Regression model

Unusual Presentation of Renal Cell Carcinoma in Crossed Ectopic Kidney

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