Zobrazeno 1 - 10
of 10
pro vyhledávání: '"H. S. Ragab"'
Autor:
Attieh A. Al-Ghamdi, Farid El-Tantawy, F. A. Ibrahim, Fahrettin Yakuphanoglu, F. Abdallah, H. S. Ragab, Neyara Radwan
Publikováno v:
IOSR Journal of Pharmacy and Biological Sciences. 9:77-85
hydroxyapatite (HAP, Ca10(PO4)6(OH)2) nanoparticles are important biocompatible materials and were successfully synthesized by a new and simple precipitation process using calcium hydroxide, phosphoric acid as phosphorus (P) and calcium (Ca) precurso
Autor:
H. S. Ragab, M.F.H. Abd El-Kader
Publikováno v:
Ionics. 19:361-369
The transient current, electrical conductivity, dielectric constant (e′), and dielectric loss factor (e″) of starch and methylcellulose homopolymers and their blends with various compositions were studied under different conditions. The x-ray dif
Publikováno v:
physica status solidi (a). 205:1540-1545
Unconventional binary glasses in the system Na2O–Bi2O3 have prepared by a conventional press-quenching technique. X-ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimeter (DSC), infrared (IR) spectra, density (
Autor:
H. S. Ragab, M. M. El-Desoky
Publikováno v:
physica status solidi (a). 202:1088-1095
The electrical conductivity and conductivity relaxation of xK 2 O-(100 - x)TeO 2 glasses have been investigation in the frequency range 40 Hz to 200 kHz and temperature range 300 to 473 K. From the density and molar volume, it may be noticed that wit
Publikováno v:
Journal of Applied Polymer Science. 87:1748-1757
Thermally stimulated depolarization current (TSDC), d.c. electrical conductivity (σ), and current–time characteristic techniques were used to study electrical polarization and conduction mechanisms for pure poly(vinyl alcohol) (PVA) and 2.5, 5, 10
Publikováno v:
Journal of Physics and Chemistry of Solids. 63:1839-1847
Ternary-phase ceramic system of Li 2 O Al 2 O 3 4SiO 2 doped with CuO, FeO and TiO 2 has been prepared and subjected to dc electrical conductivity and thermally stimulated depolarization current (TSDC) measurements as a function of temperature (30–
Publikováno v:
Journal of Materials Science. 36:4561-4565
Thermally stimulated depolarization currents (TSDC) in unirradiated and γ-irradiated press prepared β-spodumene solid solution ceramic have been investigated within the wide temperature range 20–160°C. Doses in the range 10–105 Gy were used. T
Publikováno v:
Zeitschrift f�r Physik A Hadrons and Nuclei. 338:3-6
The inner Bremsstrahlung spectrum (I.B.) associated wih the non-unique second forbiddenβ-transition of36Cl was measured using a single channel NaI (Tl) scintillation spectrometer. After making all the necessary corrections, the experimental results
Autor:
H. S. Ragab, M.F.H. Abd El-Kader
Publikováno v:
Physica Scripta. 87:025602
Starch and methylcellulose (MC) homopolymers and their blends were prepared using a casting technique. The samples were investigated by infrared (Fourier transform infrared (IR)), ultraviolet/visible (UV/VIS), differential scanning calorimetry (DSC)
Publikováno v:
Annalen der Physik. 501:225-229
The internal bremsstrahlung (IB) spectrum accompanying the β-decay from 185W radionuclide has been measured. The obtained spectrum was analyzed into its constituting gamma lines taking into account all the proper corrections. The analyzed spectrum w