University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 THE EFFECT OF SULFUR MUSTARD ON GLUCOSE PHOSPHORYLATING ENZYMES AND LIVER CELLS IN MALE RATS - 31220 EN Journal Article A significant decrease of hepatic high-Km glucose- phosphorylating enzyme glucokinase (ATP- D- glucose 6- phosphotransferase, EC 2.7. 1.2, GK) and low-Km hexokinases (EC 2.7. 1.1. HK) activities were noticed in liver treated with 2, 2'- dichlorodiethyl sulfide (sulfur mustard, HD) when injectedinteraperitoneally to male rats in 114 LD50. This decrease occurred 1.5 to 5.5 hours after the injection. Simultaneously, a significant decrease in concentration of soluble protein and glycogen was also noted after2 hours. In addition some morphological changes on liver cells were noticed https://jsciences.ut.ac.ir/article_31220_398fe2ec0161a64eb0ce33ece464fc06.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 THE INHIBITORY EFFECT OF DEHYDROEPIANDROSTERONE ON THE ACTIVITY AND ISOENZYME PATTERNS OF LIVER GLUCOSE 6-PHOSPHATE DEHYDROGENASE DURING DIFFERENT STAGES OF GROWTH - 31221 EN Journal Article The effect of dehydroepiandrosterone (DHEA) on the activity and isoenzyme patterns of liver glucose 6- phosphate dehydrogenase (G6PD) was investigated in rats during different stages of growth. G6PD activity of mature rats was less than those of the immature (43%) and newborn (35%) animals. DHEA at 10 M) inhibited G6PD activity of the mature , immature and newborn rats by 79%, 39% , and 88% , respectively. Digitonin (0.02%) abolished the inhibitory effect of DHEA in all three groups of rats with an additional22% increase in the enzyme activity in only the mature animals. Gel electrophoresis band patterns of G6PD showed four active bands (I, 11, 111, IV) for the newborn and immature rats. In mature rats band IV was absent but appeared in the presence of digitonin. When electrophoresis was done in the presence of DHEA (10 M) band IV of the immature and neivborn animals disappeared and the activity of band Ifor all animals was partially inhibited with no change in the activities of bands II and III. The data provide further evidence for the possible regulatory role of DHEA on G6PD isoenzyme activities https://jsciences.ut.ac.ir/article_31221_a6101db109c4529f60805430ce177318.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 THE RELATIONSHIP BETWEEN ALUMINIUM TOXICITY AND IRON METABOLISM IN RATS - 31222 EN Journal Article The relationship between aluminium toxicity and iron metabolism was studied. Male rats were exposed to aluminium by daily intraperitoneal injection of 40pmolelkg body weight. After 45 days, aluminium intoxified rats had a significant loweredserum ferritin (55%), iron (42%), TIBC (25%) and hemoglobin(31%). At thesame time the serum ceruloplasmin level was elevated by 60%. This result shows that aluminium interferes with the iron metabolism in rats and might be considered as a possiblecause of hypochromic microcytic anemia which is found following regular hemodialysis in chronic renal failure patients https://jsciences.ut.ac.ir/article_31222_d66e6fd222e1c0f49746452faa415c1c.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF VANADIUM WITH ANTHRANILIC ACID IN PRESENCE OF PYRIDINE - 31223 EN Journal Article Vanadium (III) gives a greenish- yellow complex with anthranilic acid in presence of pyridine. The complex is extractable with chloroform and is used for photometric determination of vanadium by measuring the absorbance at 390 nm against a reagent blank. Beer's Law holds good in the range of 1-20 pg V/ml. Moderate amounts of Pb (II) , Ca (II) , Sr (II) , Ba (II) , Cd (II) , Mg (II) , Mn (II) , Ni (II) , Co (II) , Cu (II) , Zn (II) and limited amounts of W (VI), A1 (III), Th (IV), Zr (IV), Sn (II), Sb (III), Ti(IV), Fe (III), and Cr (VI) can be tolerated. U (VI) and Mo (VI) interfere https://jsciences.ut.ac.ir/article_31223_3e1e19f4445b3d8bf303f4771e6973e6.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 LEWIS-BASE ADDUCTS OF LEAD (11) COMPLEXES. CRYSTAL STRUCTURES OF Pb (BIPY) (H O) (N0 ) AND Pb (PHEN) (H 0) (NO ) - 31224 EN Journal Article Reactions of equemolar amounts of lead (II) nitrate and 2,2'- bipyridine o r l , 10- phenanthroline in aqueous methanolicsolution yield crystals of Pb (bipy)(H O)(NO ) (1) or Pb (phen) (H O) (NO ) (2) respectively. Their structures were determined by X-ray crystallography. The method and structure determination is described https://jsciences.ut.ac.ir/article_31224_1b4a70ea8ec6487a12030c6dbde8e3d3.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 PREPARATION AND CHARACTERIZATION OF Mn (III) COMPLEXES - 31225 EN Journal Article We have prepared and characterized a few Mn (III) complexes by using a few bidentate and tridentate ligands. Spectra of the manganese (III) ion in a variety of molecular environments are reported. On the basis of solution spectra, some of these complexes seem to be typically distorted https://jsciences.ut.ac.ir/article_31225_42abbf1997bbf1bea463690de3451e39.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 PHOTOCHEMICAL DECOMPOSITION OF 3-CHLORO-CROTON ALDEHYDE TOSYLHYDRAZONE SODIUM SALT - 31226 EN Journal Article The low temperature photochemical decomposition of 3- chloro-croton aldehyde tosylhydrazone sodium salt in tetrahydrofuran results in the formation of 3- chloro- 3- methyl cyclopropene and 5- chloro- 5- methyl- pyrazolenine respectively. In the presence of moisture, the photohydrated compound 3 was obtained as one of the products https://jsciences.ut.ac.ir/article_31226_9ffeb5b764e884cc28fef0104e64b5bc.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 2-DIMETHYLPHOSPHONO-(3-METHOXYCAR- B ONYL) -6- PHENYLACETAMIDO CARBAPENAM - 31227 EN Journal Article The title compound has been synthesized starting from cis- N- (a - methylacrylyl) -3-N- Phenylacetamido -4- styryl -2- azetidinone (1) [1]. https://jsciences.ut.ac.ir/article_31227_047213fe37bcee03c915839cffd2024b.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 ATTEMPTED SYNTHESIS OF 5' - DEOXY - 5' - PHOSPHONO - ISOCYTIDINE SYNTHESIS OF PHOSPHONIC ACID DERIVATIVES OF ACYCLO - NUCLEOSIDES. PREPARATION OF 1- ?- D- ARABINOFURANOSYL PYRIMIDINES - 31228 EN Journal Article The synthesis of 5' - deoxynucleoside 5' - phosphonates which contains a 5' - CP bond in place of the 5' -COP bond of the naturally occuring nucleotides is described. The preparation of phosphonate derivatives of acyclo - nucleosides and a simple method for the conversion of 1-? -D-ribofuranosyl pyrimidines to the corresponding 1-? -D-arabinofuranosyl pyrimidines are also explained https://jsciences.ut.ac.ir/article_31228_e5654b80531b9a7338900193f90fbba5.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 SYNTHESIS OF OXAZOLO [3, 2-b] 1, 2, 4- TRIAZINES A NOVEL HETEROCYCLIC SYSTEM - 31229 EN Journal Article The synthesis of 6- methyl- 2- phenyl- 7H- oxazolo [3,2-b] 1,2,4-Triazine- 7-one (6, R=Ph) and its 2-P- bromophenyl analogue to the two members of a new heterocyclic system is described https://jsciences.ut.ac.ir/article_31229_c5cc5960420a4189fb225dbaec8f9e62.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 DEHYDROPUNTARENINE AND DEHYDROSAULATINE TO NEW ISOQUINOLINE ALKALOIDS FROM ROOTS OF BERBERIS ACTINACANTHA - 31230 EN Journal Article The isolation and characterization of two new isoquinoline alkaloids, Dehydropuntarenine and Dehydrosaulatine, obtained during the column chromatography of an alkaloidal fraction from the roots of B. Actinacantha (Berberidaceae) are described. https://jsciences.ut.ac.ir/article_31230_8ebef38fe0b242f7c7a87e7f5b2de305.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 SYNTHESIS OF NEW PHASE- 1 METABOLITES OF TWO BARBITURATES - 31231 EN Journal Article The new 4'- hydroxy and 3'- aldehyde phase- 1 metabolites of butobarbitone and pentobarbitone are fully synthesized for the first time. These metabolites were used to idenfity and quantify the natural metabolites in human urine after single and multiple doses of these drugs. The synthesized metobolites have spectral characterizations (IR, NMR, U.V. and mass spectroscopy) consisted with the assigned structures https://jsciences.ut.ac.ir/article_31231_f80f574e584495515259692b741b890e.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 QUINALDINIUM AND POLY(2- VINYLQUINOLINIUM) DICHROMATES AS NEW MONOMERIC AND POLYMERIC OXIDIZING REAGENTS - 31232 EN Journal Article Preparation and uses of quinaldinium dichromate and its polymeric analogue poly (2- vinylquinolinium) dichromate as the new monomeric and polymeric oxochromium-amine complex reagents for oxidizing variousorganic compounds, with emphasis on the latter, are described https://jsciences.ut.ac.ir/article_31232_2d1838bd5b731e64a54439dac82b3a4e.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 KINETIC STUDIES USING SEMI-EMPIRICAL SELF- CONSISTENT FIELD (SCF) MOLECULAR ORBITAL (MO) METHOD: PARTI. A MODIFIED NEGLECT OF DIATOMIC OVERLAP (MNDO) STUDY OF THE PYROLYSIS OF ETHYL VINYL ETHER - 31233 EN Journal Article Using a computer code called MOPAC, an acronym for a general Molecular Orbital Package (Quantum Chemistry Programme Exchange (QCPE) Programme No. 455), the geometries and heats of formation of the reactant, the products and the trdnsition state were computed by the MNDO semi- empiricalself consistent field (SCF) method for the pyrolysis of ethyl vinyl ether. ((Force))calculation on the reactant and the transition state also gave the enthalpies and entropies at various selected temperatures. In the temperature range of the experimental pyrolytic study, the above calculations yielded the Arrhenius parameters of the reaction in excellent agreement with reported experimental results. This is significant in that it supplements the number of instances [I, 2,3(a)- (g)], not exhaustively enumerated here, in which a semi- empirical SCF method has been successfully used to study the reaction mechanisms of many- atom molecules https://jsciences.ut.ac.ir/article_31233_4fac9d25fadd0be196f95f166fec2807.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 KINETIC STUDIES USING SEMI-EMPIRICAL SELF- CONSISTENT FIELD (SCF) MOLECULAR ORBITAL (MO) METHOD: PART I1 [I] A MODIFIED NEGLECT OFDIATOMIC OVERLAP (MNDO) STUDY OF THE PYROLYSES OF CHLOROETHYL VINYL ETHERS - 31234 EN Journal Article The effect of monochloro and dichloro substitution into the ethyl portion on the pyrolysis of ethyl vinyl ether has been studied. This involved four possible monosubstituted derivatives and six disubstituted derivatives. For the monochloro derivatives, B- chloro substitution enhanced the rate constant while a- chloro substitution depressed it noticeably. For the dichloro derivatives, substitution of both chlorine atoms on the same carbon atom, whether aor S hardly made any difference, while for substitution on different carbon atoms, substrate resulting in transdichloroetbene is facilitated relative to that resulting in the cis product. These results are interpreted in terms of the effect of the substituent(s) on the electronic charge density distributions over the key atoms in transition state geometries calculated. https://jsciences.ut.ac.ir/article_31234_88d619ad97413b44d6659073b7b12f32.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 A SUPER ZERO-REST-MASS-EQUATION - 31235 EN Journal Article Various authors have considered the Zero-rest-mass equation and the contour integral representation of its solutions. Ferber generalized these equations to supertwistor spaces with 2N odd components so that with N=O we get the standard ungraded twistors of Penrose. In this paper we use the Batchelor theorem toconstruct the natural super Twistor space with coarse topology with underlying standard twistors. We also introduce a Super zero rest-mass equation (S. Z. R. M) which satifies the standard non- graded Z. R. M. equation when an augmentation map &is applied. It has been shown that the contour integral defined by Rogers can be used to represent a solution for these equations and these solutionsreduce to standard solutions when one applies the ?-map https://jsciences.ut.ac.ir/article_31235_d70f195edbc052d647a288e3d46b3b2e.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 1 5 1990 11 01 Additions and Corrections "M.H.Alamatsaz- On Modality and Divisibility of Poisson and Binomial Mixtures. J.Sci. I.R. Iran, Vol.l,No.3, Spring 1990 - 31236 EN Journal Article https://jsciences.ut.ac.ir/article_31236_07c3f887cc69caf06f342a367cfe6304.pdf