10,831 research outputs found
Hypervitaminosis A and the role of liver microsomal enzyme system in vitamin A metabolism.(A review in Chinese).
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Dietary oxidized frying oil enhances tissue alpha-tocopherol depletion and radioisotope tracer excretion in vitamin E-deficient rats.
No full textResponses of rat liver microsomal enzyme activities to feeding frying oils deteriorated to various degrees.(in Chinese).
No full textA nonspectroscopic method to determine the photolytic decomposition pathways of 3-chloro-3-alkyldiazirine: Carbene, diazo and rearrangement in excited state
No full textC-60 acts as a mechanistic probe for the formation of carbene, diazo compound, and for the rearranged product via the excited state in the photolysis of 3-chloro-3-isopropyldiazirine and 3-chloro-3-chloromethyldiazirine. The carbene adds to C-60 to form methanofullerene, whereas the diazo compound adds to C-60 to form fulleroid. The olefin product arises as a result of the rearrangement in the excited state.PT: J; CR: AKASAKA T, 1999, J ORG CHEM, V64, P566 AKASAKA T, 1999, ORG LETT, V1, P1509 AKASAKA T, 2000, J AM CHEM SOC, V122, P7134 ARENAS JF, 2002, J AM CHEM SOC, V124, P1728 BECKE AD, 1988, PHYS REV A, V38, P3098 BECKE AD, 1993, J CHEM PHYS, V98, P5648 BONNEAU R, 1996, J AM CHEM SOC, V118, P3829 BONNEAU R, 1996, J AM CHEM SOC, V118, P7229 BRINKER U, 1994, ADV CARBENE CHEM, V1 BRINKER U, 1998, ADV CARBENE CHEM, V2 FRISCH MJ, 1998, GAUSSIAN 98 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 HIRSCH A, 1993, CHEM BER, V126, P1061 JACKSON JE, 1988, J AM CHEM SOC, V110, P595 LAVILLA JA, 1989, J AM CHEM SOC, V111, P6877 LAVILLA JA, 1989, J AM CHEM SOC, V111, P712 LEE C, 1988, PHYS REV B, V37, P785 LIU MTH, 1987, CHEM DIAZIRINES, V1 LIU MTH, 1987, CHEM DIAZIRINES, V2 LIU MTH, 1996, J AM CHEM SOC, V118, P8098 MARTIN N, 1998, CHEM REV, V98, P2527 MODARELLI DA, 1992, J AM CHEM SOC, V114, P7034 PIETRO WJ, 1982, J AM CHEM SOC, V104, P5039 PLATZ MS, 1994, RES CHEM INTERMEDIAT, V20, P175 SCHICK G, 1998, TETRAHEDRON, V54, P4283 WHITE WR, 1992, J ORG CHEM, V57, P2841; NR: 26; TC: 8; J9: J AM CHEM SOC; PG: 4; GA: 582NTSource type: Electronic(1
1/m(Q) corrections to form factors and extraction of vertical bar V-cb vertical bar
No full textForm factors for 0(-) --> 0(-) and 0(-) --> 1(-) mesonic transitions in the heavy quark limit and the 1/m(Q) corrections are analyzed model independently within the Bethe-Salpeter (BS) formalism. The analysis shows that the BS formalism has spin-flavor symmetry in the heavy quark limit and respects Luke's theorem when the 1/m(Q) corrections are taken into account. All form factors for B-->D(*) transitions beyond the zero recoil point are estimated in a relativistic constituent quark model based on the BS formalism. Using these form factors we calculate the branching ratios for the semileptonic decays B --> D(*)l(+)v(l) and extract the Cabibbo-Kobayashi-Maskawa matrix element \V-cb\. We get \V-cb\ = 0.042 +/- 0.003 which is consistent with the current world average.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)1ARTICLE74146-41515
Characterization of core-shell type and alloy Ag/Au bimetallic clusters by using extended X-ray absorption fine structure spectroscopy
No full textSemi-continuous propagation and synchronous differentiation of hyper-solventogenic cells of Clostridium thermosaccharolyticum in a xylan medium at 56 degrees C
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