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Predicting soil erosion hazard in Lattakia Governorate(W Syria)

International Journal of Sediment Research 2021年第2期36卷 207-220页

作者： Mohammed Safwan Khallouf Alaa Alshiehabi Omran Bao Pham Quoc Thi Thuy Linh Nguyen Nam Thai Van Tran Anh Duong harsányi endre Institution of Land Utilization Technology and Regional Planning Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen Administration of Natural Resources Management General Commission for Scientific Agricultural Research (GCSAR) 3. Department of Soil Sciences and Land Reclamation Faculty of Agriculture Al-Baath University Department of Soil and Environment Swedish University of Agricultural Sciences (SLU) Institute of Research and Development Duy Tan University Faculty of Environmental and Chemical Engineering Duy Tan University Faculty of Water Resource Engineering Thuyloi University Ho Chi Minh City University of Technology (HUTECH) Sustainable Management of Natural Resources and Environment Research Group Faculty of Environment and Labour Safety Ton Duc Thang University

The main objective of this study is to predict soil erosion in the Lattakia Governorate(W Syria) using the Water Erosion Prediction Project model(WEPP) and to compare the result with that of the RUSLE. Field survey and data collection were carried out, and 44 soil samples were analyzed. In addition, all the necessary input files were prepared for use in the WEPP model and RUSLE. Results show that more than of 80% of the locations studied experience slight to moderate erosion(less than 5 t/ha/y), whereas the rest of the locations experience severe soil erosion hazard. Moreover, the volume of runoff estimated by the WEPP model is in the range of 51 e321 mm, and the R~2 between the simulated soil erosion and the predicted runoff reached 0.68. Interestingly, the R~2 between the WEPP model and RUSLE is 0.56, which indicates a good correlation between the two models.

关键词： Soil erosion Run-off WEPP RUSLE Syria

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Electrical and magnetic properties of 0-3 Ba(Fe_(1/2)Nb_(1/2))O_(3)/PVDF composites

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Journal of Advanced Dielectrics 2017年第6期7卷 1-11页

作者： hars Ranjan Uttam K.Mahto K.P.Chandra A.R.Kulkarni A.Prasad K.Prasad Aryabhatta Centre for Nanoscience and Nanotechnology Aryabhatta Knowledge University Patna 800001India Department of Physics S.M.CollegeBhagalpur 812001India Department of Metallurgical Engineering and Materials Science Indian Institute of Technology Mumbai 400076India University Department of Physics T.M.Bhagalpur UniversityBhagalpur 812007India

Lead-free Ba(Fe_(1/2)Nb_(1/2))O_(3)/PVDF O_(3) composites were fabricated using *** technique.X-ray diffraction,scanning electron microscopy,dielectric,impedance,ac conductivity,magnetic force microscopy(MFM)and vibrating sample magne-tometer studies were undertaken to characterize the *** crstallite size of the Ba(Fe_(1/2)Nb_(1/2))O_(3) powder,estimated using Williamson-Hall approach,was found to be~42 *** fller particles of~0.5-1 pum were found to disperse in the polymer matrix of all the *** concentration dependent values of real and imaginary parts of complex permittivity showed increasing trend and were seen to follow Bruggeman and Furukawa *** data for ac conductivity exhibited negative temperature coeficient of resistance character of the test materials and were found to obey Jonscher's power *** correlated barier hopping model was found to explain satisfactorily the mechanism of charge transport occurring in the *** confirmed the presence of magnetic phases in the *** magnetization versus applied field curves indicated the possibility of magnetoelectric coupling in the ***,the present composites have shown themselves as potential multi-functional candidate materials for use in high density data storage applications.

关键词： Random composite medium dielectric properties magnetic properties effective permittivity magnetic force microscopy

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