University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 COMPARISON OF SEED PROTEINS ELECTROPHORESIS OF EIGHT SPECIES OF THE GENUS SUAEDA (CHENOPODIACEAE) IN IRAN - 31187 EN Journal Article Seed proteins of eight species of the genus Suaeda (Chenopodiaceae) were compared by means of polyacrylamide disc gel electrophoresis. Different samples of the same species showed not less than 89% similarities, and geographical separation had no remarkable effect on seed protein patterns of the same species. Morphological heterogenity, that creates difficulties in infrageneric classification, was also evident in clustering analysis of protein bands. S. microsperma, which is morphologically very close to S. acuminata, was found a great distance away from any other species https://jsciences.ut.ac.ir/article_31187_b2934262a65d2f051397cc8390f51dc9.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 VARIATIONS OF GLUCOSE 6-PHOSPHATE DEHYDROGENASE ACTIVITY IN VARIOUS TISSUES INDUCED BY METABOLIC ALKALOSIS, ACIDOSIS AND DIABETES - 31188 EN Journal Article The effects of chronic metabolic acidosis, alkalosis and alloxan-induced ketoacidosis on G6PD activity of rat kidney, liver and erythrocytes were studied. Metabolic acidosis significantly increased the activity of kidney enzyme (55%) but decreased the liver (43%) and erythrocyte (38%) enzyme activities. Alkalosis did not make a significant change in the kidney or liver enzyme activity but slightly decreased that of the erythrocyte enzyme. In alloxan-induced diabetic rats, the rise in G6PD activity of kidney (69%) was associated with a decline in the enzyme activities of liver (50%) and erythrocytes (51%). It is suggested that in alloxan-induced diabetes, ketoacidosis is mainly responsible for the change in G6PD activity of various tissues and different organs do not respond similarly toward metabolic acidosis or alkalosis. https://jsciences.ut.ac.ir/article_31188_735f505f81a75048db0947fe995b58e9.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 EFFECTS OF SOME NOVEL ASCORBIC ACID-METAL COMPLEXES ON SELECTED BACTERIAL AND FUNGAL SPECIES - 31189 EN Journal Article The antimicrobial activity of some novel ascorbic acid-metal complexes [bisascorbate complexes of copper (II), zinc(II), manganese (11), iron (111), cobalt(II), lead(II) and cadmium(II)] was investigated. Four standard strains of bacterial species - Staphylococcus aureus, Escherichia coli, Bacillus subtilis and Klebsiella pneumonia and four fungal species - Trichophyton sp. Penicillium sp., Aspergillus flavus and Aspergillus niger were used for the investigation. The activities of pure ascorbic acid are compared with the complexes. Generally, percentage inhibition of ascorbic acid on fungal species was the greatest among all compounds tested. The complexes have little or no activity on the bacterial species studied. The latter suggests that ascorbic acid complexation can perhaps be a possible mechanism for the prevention of heavy metal poisoning in biological systems https://jsciences.ut.ac.ir/article_31189_c9d0389bac9d234bd66c88ef7be066d0.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 PREPARATION AND MOLECULAR STRUCTURE OF 2-BENZYLAMINOPYRIDINE COPPER(1) COMPLEX - 31190 EN Journal Article 2-Benzylaminopyridine (HBAP) reacts with NaH in THF and generates the sodium salt (NaBAP). Further reaction of [Cu(TMEDA) ] [CuCl ] with one equivalent of this ligand in THF leads to the formation of a dimeric Cu(1) complex, [Cu (BAP)] . H 0. The molecular structure has been determined by using a single-crystal X-ray diffraction method. The yellow compound crystallizes in the monoclinic space group P2 lc with four molecules per unit cell. The unit cell dimensions are a = 8.090(4), b = 1 1.220(7), c = 22.412(8)? with ?=91.3 l(3)?. The final R value is 0.065 for 3859 reflections measured. Coordination number around each copper is two (nearly linear). The Cu ... Cu distance is 2.4558(16) ? . https://jsciences.ut.ac.ir/article_31190_68c7db132a6299fb17d7ff6bc384a52f.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 COMPLEXES OF LEAD (II)*: CRYSTAL STRUCTURES OF L2Pb (NO,), AND L2Pb(SCN), L=Z(AMINOMETHYL) PYRIDINE - 31191 EN Journal Article The reactions of Pb(N0 ) and Pb(SCN)2 with 2-(aminomethy1)pyridine (C H N = L) yielded colourless crystals of L Pb(N0 ) ( I ) and L Pb(SCN) , (2), respectively. Their structures were determined by X-ray crystallography. Crystal data: 1, monoclinic, P2 /c, a = 9.263 (4) ?, b = 7.783 (2) ?, c = 6.692 (3) ?, ? = 101.26 (2)?, Z = 2, Mo K?, 1540 observed (I > 2.5 ?(I) data (22 ? C), R = 0.038; 2, monoclinic P2 /c, a = 10.010 (3) ?, b = 8.212 (10) ?. c = 11.010 (5) ?, ?= 94.26 (5) ?, Z = 2, Mo K? 1856 observed (I > 2.5 ? ( I )) data (22 ? C), R = 0.040 https://jsciences.ut.ac.ir/article_31191_f9827b6430547fd3f2c94fabf299fb97.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 SYNTHESIS OF SOME IMIDAZO [ I , 2-b] [l , 2,4] TRIAZINE AND N-ALKYLATED IMIDAZO [l , 2-b] [1 , 2,4]-TRIAZINES - 31192 EN Journal Article A number of 3-amino-1, 2, 4-triazin-5 (2H)- ones(1) were synthesized and condensed with a-haloketones to give 2,6-disubstituted imidazo [1, 2-b] [1, 2, 4]-triazin-3 (4H)-ones (2). These compounds were reacted further with a - haloketones to yield N-alkylated products (3). https://jsciences.ut.ac.ir/article_31192_f230c4cd39d680d4cde59248861bdf9d.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 SYNTHESIS OF (k) - 6,8-DIHYDROXY-3- ISOPROPYL-7-METHYLISOCHROMAN - 31193 EN Journal Article The title isochroman ( 8 ) was synthesized as a suitable substrate for acetoxylation studies leading to an intermediate of type (4), expected to afford, on condensation with diketen, the fungal metabolite "rotiorin" type linear product (1). Cyclocondensation of alcohol (6), obtained by the reduction of ketone (5) with paraform in the presence of anhydrous aluminum chloride afforded the dimethoxyisochroman (7). Demethylation of (7) using boron tribromide in dichloromethane furnished the title isochroman (8). https://jsciences.ut.ac.ir/article_31193_d7524e44b42e52a688f6b5cc14bb3006.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 KINETIC SPECTROPHOTOMETRIC DETERMINATION OF MERCURY IN DIFFERENT MATERIALS BASED ON ITS INHIBITORY EFFECT ON THE BRILLIANT GREEN-SULFITE REACTION - 31194 EN Journal Article A new kinetic method for the determination of Hg(II) based on its inhibitory effect on the Brilliant green-sulfite reaction at pH 6.5 is proposed. The reaction is followed spectrophotometrically at 615 nm by measuring the change in absorbance at the fixed time of 3.5 min after the initiation of the reaction. Both the influence of the reaction variables and the interference of many ions have been studied. Under the selected experimental conditions, Hg(II) was determined in the range 5.0 - 1300 ng.ml . The method was applied to the determination of mercury in cleaning solutions for contact lenses and in industrial waste water https://jsciences.ut.ac.ir/article_31194_b6622e4ef1a8d811316fe50fd2975faf.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 ON THE LIFTS OF SEMI-RIEMANNIAN METRICS - 31195 EN Journal Article In this paper, we extend Sasaki metric for tangent bundle of a Riemannian manifold and Sasaki-Mok metric for the frame bundle of a Riemannian manifold [I] to the case of a semi-Riemannian vector bundle over a semi- Riemannian manifold. In fact, if E is a semi-Riemannian vector bundle over a semi-Riemannian manifold M, then by using an arbitrary (linear) connection on E, we can make E, as a manifold, into a semi-Riemannian manifold. When the metric of the vector bundle E is parallel with respect to the chosen connection, we compute the Levi-Civita connection of E, its geodesics, and its curvature tensors. We also show that the sphere and pseudo-sphere bundles of E are nondegenerate submanifolds of E, and we shall compute their second fundamental forms. We shall also prove some results on the metric of E https://jsciences.ut.ac.ir/article_31195_16a153a27394122922a55fb102f602e3.pdf

University of Tehran Journal of Sciences, Islamic Republic of Iran 1016-1104 5 3 1994 12 01 ROTATIONAL ASSIGNMENT OF NEW BANDS IN THE NO , EXCITATION SPECTRUM IN THE SPECTRAL RANGE OF 15600 cm TO 15633 cm - 31196 EN Journal Article Sub-Doppler excitation spectroscopy in a collimated cold supersonic beam of 5% NO seeded in argon has been performed with a spectral resolution down to 10 MHz for four vibronic bands within the perturbed B ?X A system of NO . The rotational temperature of about 15 K achieved by adiabatic cooling allows the separation of closely lying vibronic bands which overlap in absorption spectra taken at room temperature and which therefore could not be iden$- fied from the broad band excitation measurements https://jsciences.ut.ac.ir/article_31196_6a6a73c9c5eecb746b0ab4c888939818.pdf