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161.
Shehata Zourab Nasser Abu Ghalwa Muhammad Y. Al-Asqalany Nasser Khdear 《Journal of Dispersion Science and Technology》2013,34(5):712-719
Lead/lead oxide Pb/PbO2 modified electrodes was prepared for electrocatalytic oxidation of agrochemicals including herbicidal 2,4-D (albar super) and pure 2,4-dichlorophenoxy acetic acid. The results of electrocatalytic oxidation process of the agrochemical solutions were expressed in terms of the remaining concentration and COD removal. The different operating conditions of treatment process were investigated including current density, pH, temperature, time of electrolysis, type of conductive electrolyte, and its specific conductance. This electrode gives good results for the removal of agrochemicals and COD. Also, the results showed the best conductive electrolytes is NaCl. This observation was attributed to the small size of Na+ and contribution of Cl? ion in formation of OCl?. 相似文献
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164.
Md. Abdul Gafur Md. Forhad Mina Md. Abu Hashan Bhuiyan Tsutomu Asano 《Polymer Degradation and Stability》2010,95(9):1818-1825
Talc-loaded isotactic polypropylene (iPP) composites with various contents of talc were fabricated by compression molding, following slow- and fast-cooling processes, to obtain slow-cooled samples (SCS) and fast-cooled samples (FCS), respectively. Lamellar thickness of the α-crystal of iPP in the SCS is observed to be larger than that in the FCS by X-ray diffraction study. Rolled fast-cooled samples (RFCS) were also prepared at 25 °C in order to examine the crystal growth of iPP. An epitaxial growth mechanism of the α-crystal of iPP from the talc crystal is proposed. Surface of talc-loaded FCS appears with a smaller particle size than that of talc-loaded SCS and RFCS as observed by a scanning electron microscope. Young’s modulus and tangent modulus of FCS are found lower than those of SCS with the addition of talc up to 20 wt% and higher above this concentration, except microhardness which is higher in SCS at all contents of talc. From thermal studies, talc-loaded SCS and FCS are found to show higher melting temperature than the neat samples. Effect of cooling and rolling on the structures and properties of the fabricated composites are elaborately discussed. 相似文献
165.
Mohamed Ghazzali Vratislav Langer Lars
hrstrm Morsy Abu‐Youssef 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(5):o312-o314
In the crystal structures of the title compounds, C12H12N42+·2BF4−, (I), and C12H11N4+·ClO4−, (II), respectively, infinite two‐ and one‐dimensional architectures are built up via N—H...F [in (I)] and conventional N—H...N [in (II)] hydrogen bonding. The N—N single bond in (I) lies on a crystallographic centre of symmetry; as a result, the two pyridinium rings are parallel. In (II), the pyridinium and pyridyl ring planes are inclined with a dihedral angle of 14.45 (3)°. 相似文献
166.
Abu Elella Mahmoud H. Abdallah Heba M. Gamal Heba Moustafa Essam B. Goda Emad S. 《Cellulose (London, England)》2022,29(13):7317-7330
Cellulose - Antimicrobial hydrogels have enticed a major concern for repairing soft tissues, particularly prohibiting bacterial infections that are frequently accompanied by impaired wound healing.... 相似文献
167.
Ronok Zahan Md. Sifat Rahi Md. Chanmiya Sheikh Ryuta Miyatake Ennio Zangrando Tarannum Naz Md. Al‐Amin‐Al‐Azadul Islam Md Abu Reza 《应用有机金属化学》2019,33(1)
Nickel is a fundamental element for healthy life for human and higher animals. For biological importance, its complexation with bioactive ligand is worth to be studied with the aim to understand its function. Using mouse peritoneal cancer model, MTT colorimetric assay and anticancer activity analysis, we examined the role of nickel(ll) complex in growth inhibition of cancer cells. A novel nickel(ll) complex was synthesized and characterized using physico‐chemical and spectroscopic techniques. The study indicated that both the ligand and complex were capable of inhibiting Ehrlich Ascites Carcinoma (EAC) cells growth by 28.21% and 44.52%, respectively, when administered 0.3 mg/kg/day body weight intraperitoneally for five consecutive days in Swiss Webstar mice. Determination the LD50 of the complex (55 mg/kg) allowed adjusting the dose as 2.75 mg/kg and upon administration, inhibition increased to 69.36%. The ligand and complex have shown an inhibitory effect in the range of 4.86%–67.3% and 6.1%‐ 89.37%, respectively, against EAC cells (concentration range of 31.25–500 μg/ml) in RPMI‐1640 medium as determined by MTT colorimetric assay. Apoptotic cell morphological alteration was determined through optical and fluorescence microscopy. Up regulation of P53, Bax, Cas‐8, Cas‐3 and Fas and down regulation of NF‐kB and Bcl‐2 gene expression were observed in the cells treated with the nickel(ll) complex for five consecutive days. In conclusion, the newly synthesized nickel(ll) complex has shown anti‐proliferative activity and can further be optimized to be used as a lead molecule for anticancer drug. 相似文献
168.
Nano materials find wide applications due to their behavior at nano scale. TiO2 nanoparticles (TiO2 NPs) was synthesized using Neem leaf extract. This is simple, rapid, eco‐friendly, cheaper and green tools for TiO2 NPs synthesis using agricultural waste at lower applied temperature. Characterization of the extracted TiO2 NPs was confirmed by XRD, SEM, EDAX, TEM, HR‐TEM, SAED, and FT‐IR, respectively. The catalytic activity of TiO2 NPs was investigated in synthesis of 1,2‐dihydroquinoline derivatives with excellent yields and low cost. Purification of the synthesized 1,2‐dihydroquinoline derivatives carried out by easy work‐up of non‐chromatographic methods. 相似文献
169.
170.
Ali H. Abu Almaaty Eslam E. M. Toson El-Sherbiny H. El-Sayed Mohamed A. M. Tantawy Eman Fayad Ola A. Abu Ali Islam Zaki 《Molecules (Basel, Switzerland)》2021,26(6)
A novel series of N-1 arylidene amino imidazole-2-thiones were synthesized, identified using IR, 1H-NMR, and 13C-NMR spectral data. Cytotoxic effect of the prepared compounds was carried out utilizing three cancer cell lines; MCF-7 breast cancer, HepG2 liver cancer, and HCT-116 colon cancer cell lines. Imidazole derivative 5 was the most potent of all against three cell lines. DNA flow cytometric analysis showed that, imidazoles 4d and 5 exhibit pre-G1 apoptosis and cell cycle arrest at G2/M phase. The results of the VEGFR-2 and B-Raf kinase inhibition assay revealed that compounds 4d and 5 displayed good inhibitory activity compared with reference drug erlotinib. 相似文献