in order to reduce wear in gudgeon pin, bush and piston boss lubrication is done. oil used in national engine species was 10w40 with dynamic viscosity 5.5 mpa.s at 140 °c (the working temperature). in order to complete investigation the oil film hydrodynamics analysis in small end of connecting rod, a real full model engine with four cylinders has been simulated by avl excite5.1 software. in th...

This study explores how Norway, as a latecomer to oil production, was able to develop both effective oil companies and an internationally competitive oil service industry. The article focuses on two rather distinct phases: the protectionist phase, in which a strong focus on local content fostered skilled Norwegian oil companies as well as a national oil service industry, and the phase of libera...

The spreading of oil in an open ocean may cause serious damage to a marine environmental system. Thus, an accurate prediction of oil spill is very important to minimize coastal damage due to unexpected oil spill accident. The movement of oil may be represented with a numerical model that solves an advection-diffusion-reaction equation with a proper numerical scheme. In this study, the spilled o...

in the decentralized international system and lack of central authority, the first objective, priority and precedence of states, is maintenance of national security and preservation of self. from the past, durable national security provision has been include ,three readily type: 1. military readily2. political readily 3. economic readily. but economic factors of national security by the end col...

this work presents a simulation approach to the design and economic evaluation of fuel oil hydrotreating processes for control of so2 and nox emission in an iranian steam power plant. minimum amount of required fuel oil desulphurization was calculated from the limit of so2 emissions of power plants in two different scenarios based on (i) european and (ii) iranian so2 emission standards. based o...

Crude oil exerts a strong influence on national economy. Changes of international crude oil price have an important effect on Chinese economy because of China’s high dependence on the import of the crude oil. Thus, Chinese stock market can be shocked by the fluctuation of oil price. Reversely, changes in crude oil imports of China have some effect on demands and price of the crude oil. This art...

This paper reviews the relationship between the rule of law, good governance, and sustainable development as those terms are used by the relevant development organizations; describes the efforts made by various organizations to promote the rule of law and good governance; and addresses the need to strengthen compliance and enforcement for sustainable development. A recent movement, which has re...