Article history: Received on: 21/09/2015 Revised on: 22/10/2015 Accepted on: 15/11/2015 Available online: 27/12/2015 Aim: The aim of the present study was to assess the activity of Nelumbo nucifera Gaertn. Petal extract (NNPE) in tubular enzymes and in urinary albumin of Gentamicin (GM) induced renotoxic rats. Material and methods: The study was conducted for fourteen days in twenty-four rats i...

Today's large scale networks such as the Internet emerge from the interconnection of privately owned networks and serve heterogeneous users with different service needs. The service providers of these networks are interested in maximizing their profit. Since the existing pricing scheme cannot satisfy their needs, the service providers are looking for new pricing mechanisms. However, designing a...

in conventional dea models, decision making units (dmus) are generally assumed as a black-box while the performance of decision making sub-units (dmsus) and their importance play crucial roles in  analyzing the performance of systems which have internal processes. the present paper introduces an ideal network which have efficient processes and next purposes a new approach for evaluating importa...

We develop and implement a model for a profit maximizing firm that provides an intermediation service between commodity producers and commodity end-users distributed over a realistic spatial network. Producers and end-users trade with the firm through contracts for delivery of grain during the marketing season. The firm begins the marketing season with a portfolio of prearranged purchase and sa...

As widely recognized, human mankind stands before the most challenging problem of preventing anthropogenic climate change. As a response to this, the European Union advocates an ambitious climate policy mix. However, there is no consensus concerning the impact of stringent environmental policy on firms’ competitiveness and profitability. From the traditional ‘static’ point of view there are pro...

The determination of practical and coherent policy to pin down the price in restructured distribution networks should be considered as a momentous topic. The present paper introduces a new method of distribution marginal price (DMP) calculation. The main aim of this paper is to evaluate the DMP for both producers and consumers separately. For this purpose, the first part of the procedure emphas...

in the restructured environment of electricity market, firstly the generating companies and the customers are looking for maximizing their profit and secondly independent system operator is looking for the stability of the power network and maximizing social welfare. in this paper, a one way auction in the electricity market for the generator companies is considered in both perfect and imperfec...