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Articles by Mohamed Ahmed Hanafy
Total Records ( 2 ) for Mohamed Ahmed Hanafy
  Alaa Yosri Kamel Emam , Hashem Hamed Abd El-Rahman , Yasser Ahmed Abd El-Fattah El-Nomeary , Mohamed Ahmed Hanafy and Adel Eid Mohamed Mahmoud
  Background and Objective: Protein considered the second main nutrient in diet formulation for all types of animals after energy. Present study aimed to evaluate the effect of different treatments on the nutritive value of Jatropha meal (JM) by in vitro and in vivo trials as protein source in sheep diet. Materials and Methods: Chemical composition, in vitro digestibility, gas production and phorbol esters (PE) were recorded for physically, chemically and biologically treated Jatropha meal. In vivo digestibility was measured by using 24 Barki rams randomly assigned into 4 nutritional groups (6 animals/treatment) as follow: 1) control ration and in 2, 3 and 4 groups cotton seed meal replaced with 30, 45 and 60% heated Jatropha meal (HJM). Results: The various treatments raised DM (Dry matter), CP (Crude protein), NFE (Nitrogen free extract) and ash, whereas reduced OM (Organic matter), CF (Crude fiber) and EE (Ether extract) content in JM, the results of in vitro dry matter disappearance (IVDMD) have a significant height (p<0.01) for physical followed by the chemical and biological treatments. Otherwise high significant results (p<0.01) for gas production for different treatments was observed. The different treatments decreased the concentration of PE in JM than untreated. Conclusion: It can be concluded that all treatments especially heat enhanced chemical composition, IVDMD of JM and gas production. Feeding values were better with the ratio 30 and 45%.
  Mohamed Hesham Fawzy , Sara Mohamed Mahmoud , Mohamed Ahmed Hanafy , Mohamed Hassan Bakr , Adel Eid Mohamed Mahmoud , Mohamed Abdel-Alim Ali and Olfat Sayed Barakat
  Background and Objective: Nanoparticles with a little size to an enormous surface (1-100 nm) have expected clinical, mechanical and agricultural applications. This study aimed to produce nano Zinc Oxide (ZnO) and nano Copper Oxide (CuO) particles by green synthesis. Materials and Methods: Two strains of Pseudomonas fluorescens i.e., PSI and PSII, both cell culture supernatants and cell pellets from the two strains were examined separately in CuSO4 or ZnSO4 solutions. The supernatants from both strains produced color changes in both solutions referring to the formation of nano CuO or ZnO particles. The solutions were examined for nano-particle characteristics using UV-spectroscopy, particle size and morphology were tested using a scanning electron microscope and transmission electron microscopy. Results: UV-Vis absorption spectrum of solutions at a wavelength range 200-800 nm exhibits a distinct absorption peak in the region of 238-331 and at 303-366 nm for CuO or ZnO NPs, respectively. Absorption bands and the characteristic Surface Plasmon Resonance (SPR) spectra confirm the existence of CuO and ZnO NPs. SEM analysis micrographs indicated that CuO NPs were formed as spherical particles, while the exact shape of ZnO NPs could be identified as oval aggregates. Conclusion: Changes of color occurred in both solutions of two strains referring to the formation of nano CuO or ZnO particles.
 
 
 
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