Buscar
Mostrando ítems 11-20 de 66
Ponencia
Delay degradation effect in submicronic CMOS inverters
(Université Catholique de Louvain, 1997)
This communication presents the evidence of a degradation effect causing important reductions in the delay of a CMOS inverter when consecutive input transition are close in time. Complete understanding of the effect is ...
Artículo
Signature inversion in semi-decoupled bands: Residual interaction between h9/2 protons and i13/2 neutrons
(Elsevier, 1997)
Semi-decoupled bands based on the πh9/2 ⊗ vi13/2 configuration are observed in 162Tm,164Tm and 174Ta. Spins assigned to these bands imply an inversion of the expected signature splitting, which is interpreted as being the ...
Artículo
Nitrate assimilation gene cluster from the heterocyst-forming cyanobacterium Anabaena sp. Strain PCC 7120
(American Society for Microbiology, 1997)
A region of the genome of the filamentous, nitrogen-fixing, heterocyst- forming cyanobacterium Anabaena sp. strain PCC 7120 that contains a cluster of genes involved in nitrate assimilation has been identified. The genes ...
Artículo
dc motion of ac driven sine-Gordon solitons
(Elsevier, 1998-10-05)
We investigate the dependence of dc soliton motion sustained by pure ac driving in the sine-Gordon model on various parameter problems, such as frequency, initial kink velocity or relative phase. We show by means of the ...
Artículo
A generalization of the classical Laguerre polynomials
(Springer, 1995)
We consider a modi cation of the gamma distribution by adding a discrete measure supported in the point x = 0. For large n we analyze the existence of orthogonal polynomials with respect to such a distribution. Finally we ...
Artículo
Finite-size effects on multibody neutrino exchange
(American Physical Society, 1998-10-01)
We use an effective Lagrangian to study the multibody massless neutrino exchange inside a finite neutron star. Following Schwinger, we show how the total interaction energy density is computed by comparing the values of ...
Artículo
SIRENA: A CAD environment for behavioural modelling and simulation of VLSI cellular neural network chips
(Wiley-Blackwell, 1999)
This paper presents SIRENA, a CAD environment for the simulation and modelling of mixed-signal VLSI parallel processing chips based on cellular neural networks. SIRENA includes capabilities for: (a) the description of ...
Artículo
Purification and characterization of an endo-beta-1,6-glucanase from Trichoderma harzianum that is related to its mycoparasitism
(American Society for Microbiology, 1995)
he enzymes from Trichoderma species that degrade fungal cell walls have been suggested to play an important role in mycoparasitic action against fungal plant pathogens. The mycoparasite Trichoderma harzianum produces at ...
Artículo
Natural language interface for process control centers
(Elsevier, 1991)
This paper presents a prototype of a friendly man-machine interface for control centers that uses a natural language (Spanish) processor. The vocabulary is adapted to the context of physical processes. The process is ...
Artículo
Unexpected homology between inducible cell wall protein QID74 of filamentous fungi and BR3 salivary protein of the insect Chironomus
(National Academy of Sciences, 1998)
A gene, qid74, of mycoparasitic filamentous fungus Trichoderma harzianum and its allies encodes a cell wall protein that is induced by replacing glucose in the culture medium with chitin (simulated mycoparasitism conditions). ...