12,751 research outputs found
Monitoramento da liberação de CO2 de solo sob diferentes sistemas de cultivo e manejos de arroz irrigado.
bitstream/item/43848/1/boletim-124.pd
Residual do herbicida atrazina em solo cultivado com milho e na água de irrigação de arroz cultivado em sequência.
bitstream/item/60627/1/boletim-137.pd
Hidrólise de diacetato de fluoresceína como bioindicador da qualidade de solo de várzea subtropical.
bitstream/item/31534/1/comunicado-231.pd
Fixação biológica de nitrogênio na cultura do arroz irrigado por inundação: Parte I: bactérias endofíticas diazotróficas isoladas das cultivares BRS 7 "Taim" e BRS Pelota.
bitstream/item/44624/1/documento-303.pd
Ising Spin Glass in a Transverse Magnetic Field
We study the three-dimensional quantum Ising spin glass in a transverse
magnetic field following the evolution of the bond probability distribution
under Renormalisation Group transformations. The phase diagram (critical
temperature {\em vs} transverse field ) we obtain shows a finite
slope near , in contrast with the infinite slope for the pure case. Our
results compare very well with the experimental data recently obtained for the
dipolar Ising spin glass LiHoYF, in a transverse field.
This indicates that this system is more apropriately described by a model with
short range interactions than by an equivalent Sherrington-Kirkpatrick model in
a transverse field.Comment: 7 pages, RevTeX3, Nota Cientifica PUC-Rio 23/9
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