El Gaby, S., and M. M. El Aref,
"Geological, Petrochemical and Geochemical Studies on The Shaitan Granite at Wadi Shait, Eastern Desert, Egypt. ",
Bull. Fac. Sc., Assiut University, vol. 6, pp. 307-329, 1977.
El Gaby, S., and M. M. El Aref,
"Geological, Petrochemical and Geochemical Studies on The Shaitan Granite at Wadi Shait, Eastern Desert, Egypt. ",
Bull. Fac. Sc., Assiut University, vol. 6, pp. 307-329, 1977.
Mashaly, M. M., and B. C. Wentworth,
"HALF-LIFE OF PLASMA PROGESTERONE IN TURKEY LAYERS AND NON-LAYERS",
POULTRY SCIENCE, vol. 56, issue 5: POULTRY SCIENCE ASSOC INC 1111 NORTH DUNLAP AVE, SAVOY, IL 61874, pp. 1734-1734, 1977.
Abstractn/a
Mostafa, M.F., S. A. M. M. A.,
"High-temperature susceptibility of copper compounds containing CuCl2- 4 or Cu2Cl2- 6 ions",
Physica B+C, vol. 86-88, no. PART 2, pp. 691-692, 1977.
AbstractWe have measured the magnetic susceptibility of [(C2H5)2NH2]2 CuCl4, (iso-C3H7NH3)2CuCl4, and (iso-C3H7NH3)CuCl3 in the temperature range 80 < T < 400 K. These compounds show thermochrimic first order phase transitions at 315.5, 329.5 and 324.5 K, respectively, which is related to the change in geometry of the chlorine coordination of Cu2+. From the susceptibility data, estimates of the super-exchange interaction can be inferred. For [(C2H5)2NH2]2CuCl4 and (iso-C3H7NH3)2CuCl4 our results evidenced the presence of ferromagnetic interactions between the Cu ions within the network formed by CuCl2- 4 ions. For the (iso-C3H7NH3)CuCl3 the interaction between two Cu2+ ions forming the dimer can be estimated. The interaction between the dimers is found to be much weaker. © 1977.
Mostafa, M.F., S. A. M. M. A.,
"MAGNETIC SUSCEPTIBILITY STUDIES OF ((CH//3)//2CHNH//3)//2CuCl//4.",
Physica Status Solidi (A) Applied Research, vol. 41, no. 1, pp. 295-297, 1977.
AbstractThe magnetic susceptibility of ((CH//3)//2CHNH//3)//2CuCl//4 is measured in the temperature range 340 to 78 K. The susceptibility changes abruptly near the thermochromic temperature of 56 degree C. The compound obeys the Curie-Weiss behavior at high temperatures, but seems to behave like a two-dimensional ferromagnet at lower temperatures. A good fit between experimental and theoretical results is obtained using a Heisenberg ferromagnetic simple quadratic lattice model, this yields a J/K equals 12. 5.
El-Tayeb, O. M., F. E. Murad, H. H. Zedan, and A. Abdel-Aziz,
"Microbiological transformations of steroids. V. Factors affecting the transformation of progesterone by nongerminating spores of Cylindrocarpon radicicola.",
Planta Medica, vol. 31, issue 1, pp. 40-50, 1977.