مرور Volume 3, Issue 2 بر اساس تاریخ انتشار
در حال نمایش موارد 1 - 10 از 10
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SOME RESULTS FOR SOLUTION AND FOCAL POINTS OF NONSELFADJOINT SECOND ORDER SYSTEMS
(University of Tehran, 1992-12-01)Consider y" (t) + A (t)y (t) + 0, y is a real n-dimensinal vector and A(t) is a real nxn matrix, continuous on some interval. Some positivity properties of solutions and conjugate points of y"(t) + A(t)y (t) = 0 appeared ...
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ALGEBRAIC INDEPENENCE OF CERTAIN FORMAL POWER SERIES (II)
(University of Tehran, 1992-12-01)We shall extend the results of [5] and prove that if f = Z o a x ? Z [[X]] is algebraic over Q (x), where a = 1, ƒ 1 and if ? , ? ,..., ? are p-adic integers, then 1 ? , ? ,..., ? are linkarly independent over ...
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A NEW SPECTROPHOTOMETRIC PROCEDURE FOR THE DETERMINATION OF NICKEL (11) USING 6-PHENYL-2,3-DIHYDRO-AS-TRIAZINE-3 –THIONE
(University of Tehran, 1992-12-01)A spectrophotometric procedure for the determination of Nickel (??) based on the complex formation with 6-phenyl-2, 3-dihydro-as-triazine-3-thione (PDTT) was developed. A yellow compound forms and is easily extractable ...
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THE CALCIUM BINDING SITES OF THE BAKERS' YEAST TRANSKETOLASE
(University of Tehran, 1992-12-01)The calcium binding sites of Bakers' Yeast Transketolase (TK) was elucidated by estimating the pKa values of the functional groups that bind to calcium. These pKa's were found to be 6.25 and 7.2 relating to the pKa's of ...
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THE LEFT REGULAR REPRESENTATION OF A COMMUTATIVE SEPARATIVE SEMIGROUP
(University of Tehran, 1992-12-01)In this paper, a commutative semigroup will be written as a disjoint union of its cancellative subsemigroups. Based on this fact we will define the left regular representation of a commutative separative semigroup and ...
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SOME GENERALIZATIONS OF WEAK CONVERGENCE RESULTS ON MULTIPLE CHANNEL QUEUES IN HEAVY TRAFFIC.
(University of Tehran, 1992-12-01)This paper extends certain results of Iglehart and Whitt on multiple channel queues to the case where the inter-arrival times and service times are not necessarily identically distributed. It is shown that the weak ...
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NONDYNAMICAL ANALYSIS OF SPIN AMPLITUDES IN PION-PROTON ELASTIC SCATTERING IN OPTIMAL FORMALISM AT 6.0 GeV/C
(University of Tehran, 1992-12-01)Optimal conditions are used in nondynamical formalism to diagonalize the pionproton reaction matrix as much as possible. Invariance laws are imposed to simplify the relationship between observables and bilinear combination ...
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EFFECTS OF WOOD ON THE GROWTH OF LIGNICOLOUS FRESHWATER FUNGI
(University of Tehran, 1992-12-01)The addition of cottonwood and ash sapwood powder to YPSSl2 medium influenced the mycelial growth of 13 species of freshwater lignicolous Ascomycetes and Hyphornycetes. These species fall into three groups with respect ...
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(II) PREPARATION AND CHARACTERIZATION OF MN (III) COMPLEXES
(University of Tehran, 1992-12-01)We have prepared and characterized a few Mn (III) complexes by using a few bidentate and tridentate ligands. Spectra of the manganese (Abstract We have prepared and characterized a few Mn (III) complexes by using a ...
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PURINE ALKYLATING AGENTS 2 , 6-DIAMINO-8-HALO ALKYL PURINES (POTENTIAL ANTI - MALARIALS)
(University of Tehran, 1992-12-01)Haloalkyl purines i.e. 2,6-diamino-8-(chloromethyl) purine 10; 2, 6-diamino-X- (chloromethyl) purine 17; 2,6-diamino-8-(chloropropylp) urine 18; were synthesized by two distinct but facile methods. The N-alkylating ...



