Corrections to Finite Size Scaling in Percolation

A 1/L-expansion for percolation problems is proposed, where L is the lattice finite length. The square lattice with 27 different sizes L = 18, 22 ... 1594 is considered. Certain spanning probabilities were determined by Monte Carlo simulations, as continuous functions of the site occupation probability p. We estimate the critical threshold pc by applying the quoted expansion to these data. Also, the universal spanning probability at pc for an annulus with aspect ratio r=1/2 is estimated as C = 0.876657(45)

Suppression of two-bounce windows in kink-antikink collisions

We consider a class of topological defects in $(1,1)$-dimensions with a deformed $\phi^4$ kink structure whose stability analysis leads to a Schr\"odinger-like equation with a zero-mode and at least one vibrational (shape) mode. We are interested in the dynamics of kink-antikink collisions, focusing on the structure of two-bounce windows. For small deformation and for one or two vibrational modes, the observed two-bounce windows are explained by the standard mechanism of a resonant effect between the first vibrational and the translational modes. With the increasing of the deformation, the effect of the appearance of more than one vibrational mode is the gradual disappearance of the initial two-bounce windows. The total suppression of two-bounce windows even with the presence of a vibrational mode offers a counterexample from what expected from the standard mechanism. For even larger deformation, some two-bounce windows reappear, but with a non-standard structure.Comment: 13 pages, 6 figure

Understanding the Effects of Lactose Hydrolysis Modeling on the Main Oligosaccharides in Goat Milk Whey Permeate.

Enzymatic hydrolysis of lactose is a crucial step to improve the efficiency and selectivity of membrane-based separations toward the recovery of milk oligosaccharides free from simple sugars. Response surface methodology was used to investigate the effects temperature (25.9 to 54.1 °C) and amount of enzyme (0.17 to 0.32% w/w) at 1, 2, and 4 h of reaction on the efficiency of lactose hydrolysis by Aspergillus oryzae β-galactosidase, preservation of major goat whey oligosaccharides, and on the de-novo formation of oligosaccharides. Lactose hydrolysis above 99% was achieved at 1, 2, and 4 h, not being significantly affected by temperature and amount of enzyme within the tested conditions. Formation of 4 Hexose (Hex) and 4 Hex 1 Hex and an increased de-novo formation of 2 Hex 1 N-Acetyl-Neuraminic Acid (NeuAc) and 2 Hex 1 N-Glycolylneuraminic acid (NeuGc) was observed in all treatments. Overall, processing conditions using temperatures ≤40 °C and enzyme concentration ≤0.25% resulted in higher preservation/formation of goat whey oligosaccharides

Gas leakage and HV test procedure for the INFN Muon MWPCs

The Muon MWPCs produced by INFN laboratories are subject to gas leakage and HV tests before the installation on the LHCb experiment. The test procedure and the software tools developed are described in this paper

Evaluación de cultivares locales e introducidos de (RICINUS COMMUNIS L) higuerilla para condiciones de selva del Peru Región Ucayali 2011.

El experimento se instalo en el anexo experimental “Los Incas” de la Estación Experimental Agraria Pucallpa, departamento de Ucayali, provincia de Coronel Portillo, distrito de campo verde, el suelo donde se instalo el experimento es de altura o Ultisols. El diseño empleado fue de block completo randomizado con 04 tratamientos y 04 repeticiones, teniendo un total de 16 unidades experimentales, en un área de 1,881 m2. , los tratamientos evaluados fueron: T1 = Higuerilla BRS Nordestina, T2 = Higuerilla L1-003, T3 = Higuerilla L2-004 y T4 = Higuerilla L3-007. Se obtuvo como resultado que en las evaluaciones fenológicas en los cuatro cultivares donde para los parámetros agronómicos Higuerilla L3 – 007 e Higuerilla L 2-004, obtuvieron menor altura de planta al final del ciclo con 90 y 105 cm respectivamente siendo menor también en lo que corresponde a la altura de planta a la emisión del primer racimo que fue de 27.5 y 41 cm; asimismo el ecotipo Higuerilla L1 – 003 obtuvo 84 días a la emisión del primer racimo y 124 días a la cosecha del primer racimo siendo el más precoz con respecto a Higuerilla BRS Nordestina que obtuvo 147 días a la cosecha del primer racimo. Sin embargo en el parámetro de rendimiento de grano los ecotipos Higuerilla BRS Nordestina e Higuerilla L 2-004, rindieron un total de 602 y 524.8 kilos/ha respectivamente pero no superaron los 1,500 kg/ha