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101.
KlÁra GÁll-IstÓk Lili Sterk GÁbor TÓth Gyula Deák 《Journal of heterocyclic chemistry》1984,21(4):1045-1048
1-(2′-Chloroacetylamino)-4,4-dimethyl-1,4-dihydro-3(2H)-isoquinolinone ( 3 ) was cyclised by treatment with sodium hydride in dimethyl sulphoxide containing 0.1 % of water to give 10,10-dimethyl-6,7,9,10-tetrahydro-5H,14bH-isoquino[2,1-d][1,4]benzodiazepine-6,9-dione ( 4 ) in a yield of 80%. In anhydrous dimethyl sulphoxide the main product of the reaction was 5-N-(4,4-dimethyl-1-phenyl-1,4-dihydro-3(2H)-isoquinolinon-1′-yl)isoquino[2,1-d][1,4]benzodiazepine-6,9-dione ( 5 ), which was also prepared by the reaction of 3 with 4 . 相似文献
102.
N. Benayad A. Dakhama A. Klümper J. Zittartz 《Zeitschrift für Physik B Condensed Matter》1996,101(4):623-630
A theoretical study of a mixed spin-1/2 and spin-3/2 Ising system with independent transverse fields is presented using an effective field method within the framework of a single-site cluster theory. In this approach the effective field equations are derived using a probability distribution method based on the use of generalized van der Waerden identities accounting exactly for the single-site kinematic relations. The effect of the transverse fields on the critical behaviour is studied. The thermal dependence of the longitudinal and transverse components of the magnetization and its higher moments is also studied. 相似文献
103.
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107.
Klärner FG Wurche F Doering Wv Yang J 《Journal of the American Chemical Society》2005,127(51):18107-18113
Pressure dependent rate constants and volumes of activation for stereomutational interconversions of the cyclobutanes, anti- and syn-2,9-dicyanodispiro[5.0.5.2]tetradeca-1,8-dienes (anti-6 and syn-6), and for their fragmentation to 1-cyano-3-methylenecyclohexene (5) have been determined. Although fragmentations might have been expected to have larger and thus more positive volumes of activation than stereomutation, both processes have essentially identical volumes of activation within experimental uncertainties at 50.1 degrees C over the pressure range, 1-3000 bar: DeltaV(not equal) = (+7.4 to +9.9) +/- 2.0 cm3 mol(-1). While these positive values are consistent with the rate of entry into the hypothetical caldera being determined by breaking the weakest bond in the cyclobutanes, the insensitivity of the product-determining exit channels argues against the obligatory second bond-breaking being a significant factor in fragmentation. 相似文献
108.
Catherine Bandle Rolf Klötzler 《Zeitschrift für Angewandte Mathematik und Physik (ZAMP)》1983,34(6):765-773
By means of a duality principle of the optimal control theory bounds for the eigenvalues of a Sturm-Liouville problem are constructed. They are then compared with the bounds obtained from monotonicity principles. 相似文献
109.
Torleiv Kløve 《BIT Numerical Mathematics》1974,14(1):40-44
We consider the simultaneous equations $$\begin{gathered} p_1^{\alpha _1 } p_2^{\alpha _2 } ...p_n^{\alpha _n } = P_1 P_2 \hfill \\ p_{n + 1} = P_1 - P_2 \hfill \\ \end{gathered} $$ wherep 1,p 2,...,p n+1 are then+1 first primes and α1,...,α n ,P 1,P 2 are integers. The equations are solved completely forn≦3 and all solutions given under certain restrictions on the α i 's forn≦9. 相似文献
110.
R. Klíma 《Czechoslovak Journal of Physics》1976,26(6):638-645
Landau damping and transit time damping are analyzed from the point of view of toroidal electric current generation. Steady current density and energy absorption are estimated. The importance of momentum transfer to non-resonant electrons via Coulomb collisions is pointed out. If the bounce period of trapped electrons is less than their collisional relaxation time, the most part of the toroidal current is generated due to collisional dragging of non-resonant electrons.The author gratefully acknowledges valuable discussions with K.Jungwirth, V.Kopecký, V. L.Sizonenko and K. N.Stepanov. 相似文献