A zinc coordination polymer derived from pyridine‐2,6‐dicarboxylate (PDC), {[Zn2(PDC)2]}n, was successfully prepared via conventional, sonication and microwave‐irradiation methods. The composition and characteristics of the obtained coordination polymers (CPs) were investigated by elemental analysis, TGA/DTA, X‐ray diffraction and spectroscopic techniques. The so obtained CPs were heat‐treated in the air at 600 °C for 2 h to produce ZnO of nanosized particles (NPs). It is of interest to note that the synthesis approach of the precursor greatly affects both the nanoparticle size and the structure of the resulting ZnO NPs. Moreover, the smallest particle size was associated with the sample derived from the ultrasonically prepared precursor. TEM analysis revealed that all samples have sphere‐like morphologies. Structural analysis of the prepared ZnO samples was conducted and compared using Rietveld analysis of their PXRD patterns. Optical band gap calculations based on analysis of the UV–vis spectra of ZnO samples using Tauc's power law were achieved. The highest band gap of 3.63 eV was observed for ZnO sample obtained from the ultrasonically prepared precursor. Furthermore, the photocatalytic activity of ZnO NPs for the removal of Eosin Y color was monitored. The highest removal efficiency was recorded for ZnO originated from the ultrasonically synthesized precursor. Enhancement of removal efficiency that reached 98% was attained in only a period of 8 min. Its recycling test showed that it can be reused without structural changes over four cycling experiments.

Finite element simulation for MHD ferro-convective flow in an inclined double-lid driven L-shaped enclosure with heated corners.

MHD natural convection from two heating modes in fined triangular enclosures filled with porous media using nanofluids. .

Abstract : Due to the association of noise pollution and Psychological and physiological diseases, the main aim of this work is to determine the effects of mobile phone radiation on memory of the different ages male rats. In our study male Wistar rats were randomly divided into 4 (control and exposed receiving) groups of 10 rats in each. Memory level was measured in animals using Eight arm Maze and passive avoidance tests. Data were statistically analyzed and compared between groups using ANOVA and T-Test. The results indicate that memory level was decreased in rats exposed to mobile phone radiation compared to control rats.

Abstract : Due to the association of noise pollution and Psychological and physiological diseases, the main aim of this work is to determine the effects of mobile phone radiation on memory of the different ages male rats. In our study male Wistar rats were randomly divided into 4 (control and exposed receiving) groups of 10 rats in each. Memory level was measured in animals using Eight arm Maze and passive avoidance tests. Data were statistically analyzed and compared between groups using ANOVA and T-Test. The results indicate that memory level was decreased in rats exposed to mobile phone radiation compared to control rats.

Abstract : Due to the association of noise pollution and Psychological and physiological diseases, the main aim of this work is to determine the effects of mobile phone radiation on memory of the different ages male rats. In our study male Wistar rats were randomly divided into 4 (control and exposed receiving) groups of 10 rats in each. Memory level was measured in animals using Eight arm Maze and passive avoidance tests. Data were statistically analyzed and compared between groups using ANOVA and T-Test. The results indicate that memory level was decreased in rats exposed to mobile phone radiation compared to control rats.

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