Functional analysis of novel genes differentially expressed genes in heart/hemangioblast precursor cells (H/HPC)

info:eu-repo/semantics/publishedVersio

Effects of an extra Z′Z' gauge boson on the top quark decay t−−>cγt --> c \gamma

The effects of an extra $Z'$ gauge boson with family nonuniversal fermion couplings on the rare top quark decay $t --> c$gamma$are first examined in a model independent way and then in the minimal 331 model. It is found that the respective branching fraction is at most of the order of$10^{-8}$for$m_{Z'}=500$GeV and dramatically decreases for a heavier$Z'$boson. This results is in sharp contrast with a previous evaluation of this decay in the context of topcolor assisted technicolor models, which found that$B(t --> c \gamma)\sim 10^{-6}$for$m_{Z'}=1$ TeV.Comment: New paragraphs included to clarify our results, conclusion remains unchange

Neutron capture on ^{205}Tl: depicting the abundance pattern of lead isotopes in s-process nucleosynthesis

Proposal: Neutron capture on 205Tl: depicting the abundance pattern of lead isotopes in s-process nucleosynthesisWe propose to use the TOF technique to measure the neutron capture cross section of 205Tl(n,gamma) over the full energy range of stellar interest. An accurate measurement of this cross section is needed for a complete and consistent understanding of the s-process nucleosynthesis of the heaviest nuclei which are produced in low-mass and low metallicity AGB-stars. The only previous TOF measurement has yield only a partial information, insufficient for a reliable analysis of the complex branching pattern around 205Pb and 205Tl. Furthermore, there is also a discrepancy of 40% between the two previous activation measurements made at kT=24 keV. The cross section of 205Tl(n,gamma) is particularly relevant because it affects the equilibrium that is established in some stellar conditions between the 205Tl -> 205Pb bound-state Beta-decay and the 205Pb -> 205Tl E.C. decay. This effect induces a complex interplay which influences the final s-process abundance of both nuclei. We propose to measure accurately and with high resolution the 205Tl(n,gamma) cross section by using a set of four C6D6 detectors in combination with the pulsed neutron-source of CERN n_TOF.Preprin

Produtos biológicos mostram eficiência no controle de doenças e pragas em mangueira e videira.

Dois produtos biológicos desenvolvidos na Embrapa Semiárido para controle de pragas e doenças em mangueiras e videiras são as novas armas da fruticultura no Vale do São Francisco. Os produtos Biomix e Biomut, apresentam resultados semelhantes aos de seus similares químicos quando usados preventivamente.bitstream/item/122740/1/Produtos-biologicos-mostram-eficiencia...0001.pd

Herança de resistência de feijoeiro (P. vulgaris L.) a seis raças de C. lindemuthianum identificadas no Estado de Pernambuco.

Este material foi então inoculado com seis raças.Edição dos Resumos do 25 Congresso Brasileiro de Fitopatologia, Gramado, ago. 1992

Hortalicas irrigadas no Nordeste: fitodoencas alternativas de controle.

Aborda as fitodoencas que ocorrem nas hortalicas irrigadas no Nordeste do Brasil e alternativas de controle. Abrange nocoes sobre doencas e alternativas para um controle racional de doencas, como tambem as principais doencas de algumas culturas como: tomate, melao e melancia. Nao publicado.bitstream/item/140497/1/ID-8318.pdfTrabalho distribuido aos participantes do evento "Hortalicas Irrigadas no Nordeste" promovido pela EMBRAPA-CPATSA em novembro de 1991

Identificação e controle das principais doenças das cucurbitáceas, tomate e pimentão no Submédio São Francisco.

bitstream/item/138180/1/ID-34379.pdfApostila distribuida no II Curso sobre Hortaliças Irrigadas no Nordeste, Petrolina, nov. 1992