Volume 9, Issue 2
مرور بر اساس
ارسال های اخیر
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POLARIZATION HYSTERESIS CURVE MEASUREMENT FOR AN Au/PZT/YBCO DEVICE BY DOUBLE PULSE TECHNIQUE
(University of Tehran, 1998-06-01)Polarization for Au/Pb(Zr Ti )O /YBa Cu O ferroelectric capacitor has been studied and measured by pulse method. A sequence of pulses with amplitudes varying from 0 to 10 volts in 2 volt steps is applied and a conventional ...
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AFFINE SUBGROUPS OF THE CLASSICAL GROUPS AND THEIR CHARACTER DEGREES
(University of Tehran, 1998-06-01)In this paper we describe how the degrees of the irreducible characters of the affine subgroups of the classical groups under consideration can be found inductively. In [4] Gow obtained certain character degrees for all ...
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FISSION FRAGMENT ANGULAR ANISOTROPIES AND INERTIA PARAMETERS
(University of Tehran, 1998-06-01)An analysis of selected fission fragment angular distributions from helium-ion induced fission is made using an exact theoretical expression. Theoretical anisotropies obtained with the transition state model are compared ...
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NUMERICAL SIMULATIONS OF THE PHASE TRANSITIONS IN CLUSTERS
(University of Tehran, 1998-06-01)We have studied the phase transitions in atomic clusters by molecular dynamics simulation, assuming Lennard-Jones interatomic pair potential. Calculations are performed by DAP parallel computer. The results are analyzed ...
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PERFORMANCE OF AB, ALLOYS FOR HYDROGEN STORAGE AND HYDRIDE ELECTRODES
(University of Tehran, 1998-06-01)Two types of hydride electxodes are potential candidates to replace the Cd elecsode in NilCd batteries, One is of the A type where A is a rare earth metal or mixture thereof, and B is the transition metal. The other is ...
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MOLECULAR MODELING AND NMR STUDY OF HISTDINIE AND ITS ANALOGUES AS , PYRIDOXAL 5 '-PHOSPHATE DEPENDENT HISTIDINE DECARBOXYLASE INHIBITORS
(University of Tehran, 1998-06-01)Molecular modeling analysis of charge density and heat of fornation by PM3 method as well as C, H NMR and 2D-NMR measurements of histidine (substrate) and some of its derivatives as histidine decarboxylase inhibitors ...
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LEWIS BASE ADDUCTS OF LEAD(I1) COMPOUNDS VII * SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF MONONUCLEAR (DICHLORO) (1,4,10,13-TETRA-OXA-7, 16- DIAZA-CY CLOOCTADECANE) LEAD(II)
(University of Tehran, 1998-06-01)The reaction of PbCI, with 1,4,10,13-tetra-oxa-7, 16-diaza-cyclooctadecane (L= C H N O ) yielded colourless crystals of LPbCI . The complex crystallizes in monoclinic space group, C2/c, a = 7.90(2), b = 14.75(3) and C ...
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SYNTHESIS OF NOVEL HETEROCYCLIC SYSTEM 4H-IMIDAZO [ 2,l -b] PYRIDO [2,3-el [I, 3,4] THIADIGZIM
(University of Tehran, 1998-06-01)Diazotization of 3-amino-2-cMoro pyridine (3) in the presence of dithizone (5) gave dphenyl-2-phenylazo-4H-pyrid[o3 ,2-e] [1,3,4] thiadiazine (6). Reaction of 2- chloro-3-nitropyridine (2, G=H) with (5) dfordd 4-phenyl ...
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CHARACTERIZATION OF HIGH-SILICA MORDENITE OBTAINED BY DIRECT SYNTHESIS
(University of Tehran, 1998-06-01)Three high-silica mordenite zeolites differing in SiO440, ratio were prepared by direct synthesis without using any template. The products Si02/A120, ratio is influenced by the starting gel composition. This ratio is ...
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SYNTHESIS AND MAGNETIC CHARACTERIZATION OF THE COPPER(I1) DIMER DI-p- (S UB STITUTED PHENOXO) B IS- [(2,2,6,6-TETRAMETHY L HEPTANE-3 ,5- DIONATO) COPPER(II)]
(University of Tehran, 1998-06-01)A number of complexes in the series (Cu LL'),, where L = [(CH,),C-CO-CH-COC( CH,),]-I and L'= 3-(Me) C6H,0-, 2,6-(Di-Me)C6H30-, 4-(OH)C6H?O-, 3- (F) C6H,0-, 4-(Br)C6H40-a, nd 3,s-(Dl-Me)C6H30h- ave been prepared and theu ...
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COMPARATIVE ANALYSIS OF PIGMENTS IN PETALS AND STIGMATA OF CROCUS ALMENENSIS C. BRICKELL AND B. MATHEW AND CROCUS SATWUS L
(University of Tehran, 1998-06-01)



