Volume 5, Issue 1

 

ارسال های اخیر

  • KINETIC STUDY OF TRR CORE IN FUEL CONVERSION FROM HEU TO LEU 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    In the conversion of fuel in the Tehran Research Reactor core from Highly- Enriched Uraniutn to Low-Enriched Uranium fuel neutronics analysis, thermal hydraulic calculations and kinetic performance of the core have to ...

  • IDEAL J *-ALGEBRAS 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    A C *-algebra A is called an ideal C * -algebra (or equally a dual algebra) if it is an ideal in its bidual A**. M.C.F. Berglund proved that subalgebras and quotients of ideal C*-algebras are also ideal C*-algebras, that ...

  • BATCH TRANSFERRING IN PRODUCTIONINVENTORY SYSTEMS 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    In most production-inventory systems, the products are transferred from the production centre to the inventory (warehouse) in subbatchs rather than one at a time. In this paper, mathematical models of such systems for ...

  • REACTION OF QUINONEIMINES WITH KETENES 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    The reactivity of quinoneimines towards ketene and diphenylketene was examined. N-Phenylbenzoquinoneirnines (I), (2) and also N-phenylnaphthoquinoneimine react with ketene to give the spiro-adducts (5), (7) and (1 1) ...

  • THE KINETICS OF HYDROLYSIS OF TRANS-DIFLUOROTETRAMMINECHROMIUM (111) ION IN VARIOUS CONCENTRATED ACID SOLUTIONS 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    The rate of hydrolysis of trans -[Cr(NH ) F ] was obtained as a function of acid concentsation in perchloric, sulfuric and nitric acid at 3Q°C. The results have been analyzed by the treatment of Bunnett and Olsen. Values ...

  • MODELING THE STOCHASTIC BEHAVIOR OF THE FARS RIVERS 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    Historical records for rivers in Fars Province are inadequate in comparison with the design period of hydraulic structures. In this study, time series techniques are applied to the records of three Iranian rivers in the ...

  • A NOVEL METHOD FOR SYNTHESIS OF NAPHTHOFURANS AND NAPHTHODIFURANS 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    Thermal rearrangement of propargyl naphthyl ethers produced naphthopyrans. In the presence of sodium methoxide, propargyl naphthyl ethers were converted easily to naphthofurans and naphthodifurans in good yields

  • A STUDY OF THE ANTHELMINTIC ACTIVITY OF AQUEOUS EXTRACT OF PLEUROTUS ERYNGII ON SYPHACIA OBVELATA AND HYMENOLEPIS NANA 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    Pleurotus eryngii is a mushroom growing in the Bakhtiari province of Iran and is known as a mountain fungus. The fresh fungus is used as a food, and when dried its powder has been used as an anthelmintic drug. We decided ...

  • SHOOT REGENERATION FROM PROTOPLASTS OF PENNISETUM AMERICANUM L (MIL CEREAL) 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    A finely dispersed cell suspension was obtained from embryogenic calli of two genotypes of pearl millet (Pennisetum americanum L. Mil cereal). Protoplasts isolated from both cell suspensions divided and produced globular ...

  • THERMODYNAMIC STUDIES ON THE INTERACTION BETWEEN DODECYL TRIMETHYL AMMONIUM BROMIDE AND HISTONE H A 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    The thermodynamic parameters of interaction between calf thymus histone H A and dodecyl trimethyl ammonium bromide (DTAB), a cationic surfactant, in aqueous solutions of pH 3.2, 6.4 and 10.0 were measured over a wide ...

  • A MODEL FOR THE BASIC HELIX- LOOPHELIX MOTIF AND ITS SEQUENCE SPECIFIC RECOGNITION OF DNA 

    پدیدآور نامشخص (University of Tehran, 1994-06-01)
    A three dimensional model of the basic Helix-Loop-Helix motif and its sequence specific recognition of DNA is described. The basic-helix I is modeled as a continuous ?-helix because no ?-helix breaking residue is ...