Crossed beam reaction of cyano radicals with hydrocarbon molecules. II. Chemical dynamics of 1-cyano-1-methylallene „CNCH3CCCH2; X A8... formation from reaction of CN„X 2S1... with dimethylacetylene CH3CCCH3 „X A18... N. Balucani, O. Asvany, A. H. H. Chang, S. H. Lin, Y. T. Lee, and R. I. Kaiser Institute of Atomic and Molecular Sciences, 1, Section 4, Roosevelt Road, 107 Taipei, Taiwan, Republ...

Valeriana glechomifolia Meyer is a small herb 5}10 cm high, growing in South Brazil. The plant was collected in April, 1998 in Sa8 o JoseH dos Ausentes, RS, Brazil and identi"ed by M. Sobral (Curso de PoH s-Graduac7 a8 o em Cie( ncias Farmace( uticas da Universidade Federal do Rio Grande do Sul, Brazil). Voucher specimens (M. Sobral, 7733) are kept in the Herbarium of the Universidade Federal d...

The dynamics of a confined polymer melt between strong adsorbing surfaces is considered theoretically. In particular the influence of bridging on the rheological behavior is investigated. I t is shown that the bridges are very important for small enough shear velocities. Several regimes of qualitatively different rheological behavior depending on the shear velocity are predicted, one of the int...

Purpose. To conduct a study of the technological possibilities method treatment with balls in magnetic field pen vanes that have operational damage. Research methods. A mechanical for residual stresses, developed by аcad. Davydenkov, an experimental determining endurance blades, stepwise regression methods building models. Results. The geometry blade feathers shows biggest change blades occurs ...

Let N(n, t) be the minimal number of points in a spherical t-design on the unit sphere Sn in Rn+1. For each n ≥ 3, we prove a new asymptotic upper bound N(n, t) ≤ C(n)tn , where C(n) is a constant depending only on n, a3 ≤ 4, a4 ≤ 7, a5 ≤ 9, a6 ≤ 11, a7 ≤ 12, a8 ≤ 16, a9 ≤ 19, a10 ≤ 22, and an < n 2 log2 2n, n > 10.