<span>The economic dispatch is used to find the best optimal output of power generation at lowest operating cost each generator, fulfill requirements consumer. To get a practical solution, several constraints have be considered, like transmission losses, valve point effect, prohibited region, and emissions. In this research, effect considered which increases complexity problem due its rip...

Scarcity of energy resources, increasing power generation cost and ever-growing demand for electric energy necessitates optimal economic dispatch in today’s power systems. The main objective of economic dispatch is to reduce the total power generation cost, while satisfying various equality and inequality constraints. Traditionally in economic dispatch problems, the cost function for generating...

Clinical trials of medical therapy to prevent progression in calcific aortic valve disease (CAVD) are hampered by the lack of sensitive measures of disease activity in the valve leaflets. Although the long-term goal of therapy is to prevent adverse cardiovascular outcomes, including mortality and aortic valve replacement, these end points have several limitations. First, the hard end point of m...

JOHN WRIGHT This has been evolved with a modified pulse duplicator and the use of a hot film probe for measuring velocity, direction, and turbulence. Many of the commercially available mitral valve prostheses are being investigated for their flow characteristics. In addition, efficiency is being examined and some unusual findings point to the possibility of a hydraulic ram effect in the normal ...

Clinical trials of medical therapy to prevent progression in calcific aortic valve disease (CAVD) are hampered by the lack of sensitive measures of disease activity in the valve leaflets. Although the long-term goal of therapy is to prevent adverse cardiovascular outcomes, including mortality and aortic valve replacement, these end points have several limitations. First, the hard end point of m...

JOHN WRIGHT This has been evolved with a modified pulse duplicator and the use of a hot film probe for measuring velocity, direction, and turbulence. Many of the commercially available mitral valve prostheses are being investigated for their flow characteristics. In addition, efficiency is being examined and some unusual findings point to the possibility of a hydraulic ram effect in the normal ...

In this study it has been tried, to compare results and convergence rate of sensitivity analysis and conjugate gradient algorithms to reduce fuel consumption and increasing engine performance by optimizing the timing of opening and closing valves in XU7/L3 engine. In this study, considering the strength and accuracy of simulation GT-POWER software in researches on the internal combustion engine...

the depth control systems used in iranian tractors are mechanical and they produce variable tillage depth in uneven field surface. in this research a rotary type electronic control valve was designed and constructed. by using this valve, electro-hydraulic tillage depth control system was developed and installed on the tractor. the control system was composed of: a depth sensor, a programmable l...

this research is a field study designed to-investigate the complication of patients, who underwent heart valve   surgery and were hospitalized in intensive care unit.   in this research, the field files of those patient who had undergone surgical heart valve operation and were   hospitalized in intensive care units in 1992, have been selected as general research documents.   from the point of t...