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Design and simulation of a 1-GWp solar photovoltaic power station in Sudan

Clean Energy 2021年第1期5卷 57-78页

作者： sohaib nasr mohamed abdalla HakanÖzcan Department of Mechanical Engineering Ondokuz Mayis UniversitesiSamsun 55139Turkey

Developing nations have a critical need to increase electricity *** has much unrealized potential for generating solar energy,particularly in the northern *** research study focuses on designing a 1-GW solar power station in northern Sudan using the PVsyst7.0 software *** determine the appropriate location for the solar-energy station,14 criteria were *** process is generic and suitable for use in any other *** method for conducting cash-flow estimates and return on investment is illustrated in the economic *** city of Dongola,the capital of the northern state,was selected because of its high annual irradiance on a horizontal surface at~2333.2 kWh/*** simulation results show that the annual optimum tilt angle of inclination for photovoltaic(PV)modules is 30°,the energy production is 1979259 MWh/yr and the average annual performance rate is *** addition,the electric power consumption per capita in Sudan is 269 kWh/yr,so the proposed solar power plant with 1979259 MWh/yr can provide energy to 7.4 million people per year annually and reduce carbon emissions by~18 million tons of carbon dioxide per *** calculations show that the levelized cost of electricity(LCOE)is$0.06/kWh,the discounted payback period is~11 years and the net present value is$*** a result,the proposed grid-connected PV solar plant is considered economically,technically and environmentally feasible in Sudan.

关键词： solar energy Sudan design simulation evaluation analytic hierarchy process photovoltaic

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Moringa oleifera leaf ethanol extract ameliorates lead-induced hepato-nephrotoxicity in rabbits

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Asian Pacific Journal of Tropical Biomedicine 2020年第6期10卷 263-272页

作者： Nancy B.mohamed Amira H.mohamed Nashwa A.Abu-Aita Soad M.nasr Somia A.Nassar Kawkab A.Ahmed Directorate of Veterinary Medicine 3 Teraet El Zomor St.Nasr El DinEl haramGizaEgypt Department of Clinical Pathology Faculty of Veterinary MedicineCairo UniversityGiza12211Egypt Department of Parasitology&Animal Diseases National Research Centre33 Bohouth St.DokkiGiza12622Egypt Department of Laboratory Medical Sciences College of Applied Medical SciencesPrince Sattam bin Abdulaziz UniversitySaudi Arabia Department of Pathology Faculty of Veterinary MedicineCairo UniversityGiza12211Egypt

Objective: To evaluate the effect of Moringa oleifera leaf ethanol extract as an adjunct treatment on lead acetate induced hepatonephrotoxicity in rabbits. Methods: Thirty-six male New Zealand White rabbits were assigned into two main groups. The first group(14 rabbits) served as normal control. The second group(22 rabbits) was administered orally with lead acetate at a dose of 40 mg/kg/day, 5 days/week for 8 weeks. At the 4 th and the 8 th week of treatment, 6 animals(3 animals at each period) of the second group were sacrificed while the remaining animals(16 rabbits) were assigned randomly into 2 subgroups(8 rabbits each): treated and non-treated. The first subgroup was orally given 1 m L phosphate-buffered saline for further 4 weeks while the second subgroup was administered orally with Moringa oleifera leaf ethanol extract at a dose of 400 mg/kg/day for the same period. Blood samples were collected to determine hematological and serum biochemical indices. Tissue specimens were collected from the liver and kidney for evaluation of the oxidant/antioxidant markers and for histopathological ***: Lead acetate exposure decreased the mean body weight gain, hematocrit, hemoglobin, mean corpuscular volume, and lymphocytes count. Moreover, it markedly increased counts of monocytes and platelets, serum enzyme activity, levels of creatinine, total cholesterol, triglycerides, and low-density lipoprotein cholesterol. Malondialdehyde level was markedly increased while the reduced glutathione content was significantly decreased in liver tissue of lead intoxicated-rabbits. Histopathological alterations were also noticed in the liver and kidney of lead intoxicated rabbits. Moringa oleifera leaf ethanol extract significantly improved hematological and serum biochemical parameters and histopathological structure of the liver and kidney. Conclusions: Moringa oleifera leaf ethanol extract ameliorates hemato-biochemical and histopathological alterations caused by lead

关键词： Lead toxicity Moringa oleifera Rabbits Liver functions Kidney functions Histopathology

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