Regarding the increase in needs of human societies to agricultural products, increasing water use efficiency can lead to persistent use of limited water resources. Therefore, in this study using Data Envelopment Analysis (DEA), technical, allocative, managerial and economic efficiency and also Optimal level of inputs is surveyed in order to achieve maximum Efficiency in Marvdasht city in 20...

An experimental investigation and optimization study of various piston geometries was conducted on Greaves single cylinder direct injection compression ignition engine using straight diesel and blends of rice bran biodiesel. The three combustion chamber geometries used in this study were Standard toroidal piston (STP), hemispherical bowl piston (HBP) and Shallow toroidal re-entrant piston (STRP...

Abstract This article aims to carry out a comparative analysis in the European Union and Romania, period 1991-2021, on achievement of ambitious energy efficiency objectives, by assessing assumed targets for primary final consumption at level years 2020 2030. Since 2007, EU leaders have been concerned about decarbonisation sector, first essential measure being reduce 20% 2020. As part objectives...

As we enter the post-pandemic period, United Nations' first priority related to sustainable development is facilitate a green transition, whereby “investments must accelerate decarbonization of all aspects our economy.” A 2009 study conducted by The Rocky Mountain Institute stated that “The role energy efficiency has historically played in US generally under appreciated. If productivity had rem...

A delay in the mechanical transplantation (MT) of rice seedlings frequently occurs in Huanghuai wheat-rice rotation cropping districts of China, due to the late harvest of wheat, the poor weather conditions and the insufficiency of transplanters, missing the optimum transplanting time and causing seedlings to age. To identify how delaying transplanting rice affects the agronomic characteristics...

with the increasing installed capacity of desalination, the greenhouse gas emission for generating the required energy to power the desalination plants is also becoming the focus of attention in the world community. domestic reverse osmosis membranes have been very successful technology especially in the developing world to provide safe drinking water. the novel concept of photovoltaic powered ...

nowadays, energy plays an important role in the economic and community development of country. consequently, performance analysis of energy systems is one of the effective methods being used to prevent waste of energy resources. among the different power generation technologies, steam power plants make a significant contribution to power generation in iran, with a share of 47 % of electricity g...