The demand for electricity has increased rapidly in Ethiopia. Renewable energy sources such as solar PV are being used to respond the power and cover a small percentage of country’s need. However, Ethiopia, where majority land is utilized agriculture, required generate large scale significant barrier. Big dams, Great Ethiopia’s Renaissance Dam, can be floating system eliminate need transmission...

This paper presents a method of modeling and simulation of photovoltaic arrays in MATLAB® /Simulink® using solar cell block from SimElectronics® library. The method is used to determine the characteristic of a particular photovoltaic cell panel and to study the influence of different values of solar radiation at different temperatures concerning performance of photovoltaic cells. This model it ...

An oral sustained-release floating tablet formulation of metformin HCl was designed and developed. Effervescence and swelling properties were attributed on the developed tablets by sodium bicarbonate and HPMC-PEO polymer combination, respectively. Tablet composition was optimized by response surface methodology (RSM). Seventeen (17) trial formulations were analyzed according to Box-Behnken desi...

The shortage of water is a major obstruction to the social and economic development many countries, including Egypt. Therefore, there an urgent need properly manage resources achieve optimum use. One way saving available reduce evaporation that leads loss large amount from reservoirs open lakes. This paper aims use floating photovoltaic system (FPVS) cover lake’s surface also for energy product...

Floating wind turbines are a valid option for offshore farms in the Mediterranean, where sea-floor falls off rapidly with distance from coastline. The present study concerns Life Cycle Assessment of environmental performance two types floating turbine. Greenhouse gas emissions standard models (raft-buoy and spar-buoy, 154 m rotor diameter, 6 MW installed power) were estimated terms Global Warmi...

Using Photovoltaic systems is gradually expanded by increasing energy demand. Abundance and availability of this energy, has turned to one of the most important sources of renewable energy. Unfortunately, photovoltaic systems have two big problems: first, those have very low energy conversion efficiency (in act between 12 and 42 percent under certain circumstances). Second, the power produced b...

Photovoltaic cells, as the primary part of a solar photovoltaic system, are a nonlinear DC power supply related to multiple parameters. The demand of increasing the generating efficiency of photovoltaic cells requires having a good understanding of their electrical characteristics. In this study, the mathematical and physical model of the photovoltaic cells was built by the means of Matlab and ...

for prolonging the time that drug remains in stomach, new methods used as floating drug delivery systems, that available in various forms such as floating tablets. these systems enhance drug absorption and decrease plasma concentration fluctuations. iron deficiency and its inadequate absorption in diet are of community health problems. for prolonging the time that drug remains in stomach, new m...

Arising applications of ferroelectric materials in photovoltaic devices" The ferroelectric-photovoltaic (FE-PV) device, in which a homogeneous ferroelectric material is used as a light absorbing layer, has been investigated during the past several decades with numerous ferroelectric oxides. The FE-PV effect is distinctly different from the typical photovoltaic (PV) effect in semiconductor p–n j...