University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 ISOLATION AND CHARACTERIZATION OF SIX HIGHLY INTRINSIC FLUORESCENT METABOLITES IN ARMILLARIA MELLEA (VAHL. EX. FR.) KARST - 31410 EN Journal Article Six fluorescent compounds were isolated and characterized in rhizomorph of A. mellea and were presented first as: F , F , F , MF , MF and MF . These compounds differed by Rf on chromatoplaque, max in UV spectra and ex, em and max in fluorescence spectra. Their GC-MS analysis indicated that F has a phenolic moiety and the other five are the benzenic derivatives. F compound was more fluorescent resulting from its hydroxyl group. The difference between the fluorescent compounds of rhizomorph and hyphae suggests the participation of some of these compounds in differentiation. Moreover, these compounds may have antibiotic activity against their hosts or enemies https://jsciences.ut.ac.ir/article_31410_5994cf5ebd61f4806932d5f226cb64d0.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 TERATOGENIC EFFECTS OF LITHIUM CARBONATE ON DEVELOPMENT OF MOUSE EMBRYOS - 31411 EN Journal Article https://jsciences.ut.ac.ir/article_31411_e4b976d55a102a5b6ff224fef96b74d1.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 LEWIS BASE ADDUCTS OF LEAD(I1) COMPOUNDS 111* SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF LPb(C10,), AND LPb(NCS),, (L= MESO-5,7,7,12,14, 14-HEXAMETHYL- 1,4,8,11- TETRA-AZACY COTETRADECANE) - 31412 EN Journal Article The reactions of Pb(C10 ) , and Pb(SCN) with meso-5,7,7,12,14,14-hexamethyl- 1,4,8,ll ,tetra-azacyclotetradecane (C ,H ,N = L) yielded colorless crystals of LPb(CI O ) (1) and LPb(NCS) (2), respectively. Their structures were determined by X-ray crystallography. Crystal data: 1 monoclinic, P 2 /c, a =11.293 (4) ?, b = 16.382 (6) ? , c = 21.518(4) ?, ? = 92.14(2)?, Z = 4, MoKa, 1824 observed (1>2.5?(I )) data (20°C), R = 0.044; 2 ,orthorombic, P cab, a = 15.861(2) ? , b = 10.436(8) ?, c = 20.347(4) ?, ? = 90.00(3)?, Z= 4, MoK?, 1763 observed (1>2.5?(I) data (20°C), R= 0.05 1. In both molecules, lead(II) cation is situated above the plane of the macrocyclic ring https://jsciences.ut.ac.ir/article_31412_63d01849974fcec145c71b5ebb80e184.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 SYNTHESIS OF SELENAZOL0[3,2-b] [ 1,2,4] TRIAZINE AND SELENAZOLO [2,3-C] [I ,2,4] TRIAZINE - 31413 EN Journal Article 6-Methyl- 1,2,4-triazine-3-(2H)-selenone-5(4H)-one(l) reacts in the presence of base with phenacyl bromide to give a mixture of compounds (2) and (3). This mixture is dehydrated in the presence of H,SO, to give 3-phenyl-6 methyl-7H-selenazolo[3,2-b] [I ,2,4] triazin-7-one (6). For careful structure assignment of (6) its regioisomer 3-methyl-6-phenyl-4H-selenazolo [2,3-c] [ 1,2,4] triazin-4-one (8) was unambiguously synthesized and its spectroscopic data were Compared with those of (6) https://jsciences.ut.ac.ir/article_31413_e80a24f4b7d064f350d065d0a5c51123.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 PREPARATION OF (CHLOROCARBONYL) PHENYLKETENB AND ITS CYCLOADDITION REACTION WITH BENZALDEHYDEV - 31414 EN Journal Article Meldrum's acid, 2'5-diphenyl-1'3-dioxane-4'6-dione, was produced by [2+2] cycloadditions of the (chlorocarbony1)phenylketene with benzaldehyde. Acid hydrolysis of the meldrum's acid regenerated benzaldehyde and also yielded phenylacetic acid as the final product https://jsciences.ut.ac.ir/article_31414_4d83f681638e40203e88cb7cb014b74f.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 THE EXTENDED LAW OF CORRESPONDING - STATES AND THE INTERMOLECULAR POTENTIALS FOR Ar-Ar, Ar-Kr AND Kr-Kr - 31415 EN Journal Article An inversion procedure is used to obtain from the extended principle of corresponding - states the pair interaction potentials for argon, krypton and its mixture over a tetnperature range from absolute zero to the onset of ionization. The experimentally-reduced viscosity collision integrals obtained from the corresponding - states correlation have been inverted directly to give the reduced-intermolecular potential energy curves corresponding to the collision integrals. These directly determined potentials are in good agreement with the potentials independently obtained from the molecular-beam scattering measurements, which were fitted by ESMSV for Ar-Ar and Kr-Kr and by SMSV for Ar-Kr https://jsciences.ut.ac.ir/article_31415_fd80c4b06025c38f9d6958ebe4f14532.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 THE DERIVED GROUP OF A SEIFERT FIBRE GROUP - 31416 EN Journal Article Every Seifert Fibre Group is the lift of a Fuchsian group to the universal covering group of PSL (2,R). From this, we work out a form of presentation for such a group. With the calculation of the Euler number, we can establish the presentation of the derived group of a Seifert Fibre Group https://jsciences.ut.ac.ir/article_31416_d80c2e64d4eaec667e3a3e05d935fe8c.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 THE ANALOGUE OF WEIGHTED GROUP ALGEBRA FOR SEMITOPOLOGICAL SEMIGROUPS - 31417 EN Journal Article In [1,2,3], A. C. Baker and J.W. Baker studied the subspace Ma(S) of the convolution measure algebra M, (S) of a locally compact semigroup. H. Dzinotyiweyi in [5,7] considers an analogous measure space on a large class of C-distinguished topological semigroups containing all completely regular topological semigroups. In this paper, we extend the definitions to study the weighted semigroup algebra Ma (S, o), where o is a weight function on a Cdistinguished semitopological semigroup S. We will show that this subspace is a convolution measure algebra. As acorollary, this answers in the affirmative a question raised by J.W. Baker and H. Dzinotyiweyi in [6] https://jsciences.ut.ac.ir/article_31417_a9dcc146714bd053238b84413ef7a3ff.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 6 2 1995 06 01 VISCOSITY COEFFICIENTS OF THE A-PHASE OF SUPERFLUID He AT LOW TEMPERATURES - 31418 EN Journal Article It has been shown that the Boltzmann equation for the viscosity of the A-phase of superfluid 3He at low temperatures has the same form as for a normal Ferrni liquid. The viscosity coefficients A, B, C, D and E are derived exactly. The h , parameter plays an important role in determining the temperature dependence of the viscosity coefficients https://jsciences.ut.ac.ir/article_31418_c219b83bdbd3fc9bf4fa8526d4368ea1.pdf