Probing the mechanism of EWSB with a rho parameter defined in terms of Higgs couplings

A definition of the rho parameter based on the Higgs couplings with the gauge bosons, rho_h= g_{hWW}}/c^2_W g_{hZZ}, is proposed as a new probe into the origin of the mechanism of electroweak symmetry breaking. While $\rho_h=1$ holds in the SM, deviations from one are predicted in models with extended Higgs sector. We derive a general expresion of rho_h for a model with arbitrary Higgs multiplets, and discuss its size within the context of specific models with Higgs triplets, including the ``Little Higgs'' models recently proposed. We find the even for Higgs models that incorporate the custodial symmetry to make rho=1, one could have rho_h\neq 1, which could be tested at the level of a few percent, with the precision Higgs meassurements expected at the NLC.Comment: 12 pages, 2 figure

Determination Of The Adaptability And Stability Of Soybean Cultivars In Different Locations And At Different Sowing Times In Paraná State Using The Ammi And Eberhart And Russel Methods

This study aimed to evaluate the adaptability and phenotypic stability of 10 soybean genotypes in 12 environments in Paraná state by using the additive main effects and multiplicative interaction analysis (AMMI) and Eberhart and Russell models. The assays were conducted in a randomized complete block design with three replicates, in the 2010/2011 season in four locations in Paraná state (Assaí, São Pedro do Ivaí, Cornélio Procópio, and Marilândia do Sul), and with three sowing dates (15/-20/10/10; 29/10-03/11/10; 15/-20/11/10). The cultivars tested with Roundup Ready® technology included SYN 1049, SYN 1152, SYN 1059, SYN 3358, SYN 1163, SYN 1157, V-MAX, FT Campo Mourão, BMX Potência, and SYN 9070. The yield character was analyzed. Data were submitted to analysis of variance and the adaptability and stability were then analyzed. The results of the AMMI and Eberhart and Russell models were somewhat consistent for the stability parameter only. The AMMI analysis was able to capture 66% of the variance associated with residue no additives, of which 43.18% was retained in the first principal component of interaction and 23.58%, in the second component. This is sufficient to explain the genotype × environment interaction. The SYN 1059, SYN 1163, and VMAX genotypes are distinguished by their considerably higher yield and productive adaptation. In the AMMI analysis, the cultivar SYN 1163 showed commercial promise among the other cultivars for high grain yield performance, adaptation, and response predictability.3763973398

POTENCIAL DE APROVECHAMIENTO DEL SUERO DE QUESO EN MÉXICO

Cheese whey is a by-product of the transformation of milk into cheese (85% of the total milk used). The current production of this waste in the Veracruz State, Mexico is of 354,227 tons. This waste is disposed on bodies of water and soil, causing damage to the environment due to high oxygen demand that is needed to degrade the high concentrations of organic matter that it presents. This situation has generated the search for new processes for the approach of this waste. Actually, several alternatives have been proposed for your exploitation such as contemplates its use as a substrate for obtaining products with added-value as biofuels, enzymes, lipids and organic acids. The objective was to analyze different alternatives for the use of cheese whey produced in the Veracruz State, Mexico.El suero de queso es un subproducto de la transformación de leche en queso (alrededor de 85% del total de leche usada). La producción actual de este residuo en el estado de Veracruz es de 354,227 toneladas y la mayor parte se desecha en cuerpos de agua, lo que provoca daño al ambiente debido a la alta demanda bioquímica y química de oxígeno que se necesita para degradar las altas concentraciones de materia orgánica que presenta. Esta situación ha generado la búsqueda de nuevos procesos para la transformación de este subproducto y se han propuesto diversas alternativas para su aprovechamiento, una de estas alternativas contempla su uso como sustrato para la obtención de productos con valor agregado como biocombustibles, enzimas, lípidos, ácidos orgánicos. El objetivo fue analizar alternativas para el aprovechamiento del suero de queso producido en el estado de Veracruz

Quantum singularities in a model of f(R) Gravity

The formation of a naked singularity in a model of f(R) gravity having as source a linear electromagnetic field is considered in view of quantum mechanics. Quantum test fields obeying the Klein-Gordon, Dirac and Maxwell equations are used to probe the classical timelike naked singularity developed at r=0. We prove that the spatial derivative operator of the fields fails to be essentially self-adjoint. As a result, the classical timelike naked singularity remains quantum mechanically singular when it is probed with quantum fields having different spin structures.Comment: 12 pages, final version. Accepted for publication in EPJ

Preliminary attempt to develop a path-flow analysis model for swimming performance in children

The aim of this research was to develop a path-flow analysis model from age-group swimmer’s performance based on biomechanical and energetic parameters. Twenty two young male age-group swimmers with several competitive levels volunteered to serve as subjects. It was assessed swim velocity, stroke length, stroke frequency, stroke index, propulsive efficiency, critical velocity and 200 m freestyle event performance. To verify the quality of the model, root mean square residuals (RMSR) was computed. The confirmatory model explained 54% of swimming performance. RMSR was 0.064. As a conclusion, the model based in biomechanical and energetic variables, according to the relationships suggested is appropriated to explain performance in age-group swimmers

Preliminary attempt to develop a path-flow analysis model for swimming performance in children

The goal of competitive swimming is to travel the event distance as fast as possible. The identification of the parameters that predict swimming performances is one of the main aims of the swimming “science” community. Indeed, it is consensual that biomechanical and energetic variables are determinant for performance in this sport. Several research groups dedicate their attention to the relationships establish between biomechanical and energetic variables on adult swimmers, with special emphasis on elite adult swimmers

Evolution in swimming "science" research

Swimming seems to be one of the sports more studied . More than one decade ago, Clarys (1996) made an content analysis of the research about swimming. However, in these last 13 years several developments happened in the aquatic activities

Path-flow analysis model for anthropometric, hydrodynamic and biomechanical variables in age-group swimmers

The goal of competitive swimming is to travel the event distance as fast as possible. The identification of the parameters that predict swimming performances is one of the main aims of the swimming “science” community

Detection of apoptotic events, using different methods, in renal tissues after acute haemorrhage.

Apoptosis plays an important role in cellular damage caused by acute renal hypoperfusion. The aim of this study was to detect apoptotic events in an animal model of acute haemorrhage, followed by volume replacement with different intravenous solution

Path-flow analysis model for anthropometric, hydrodynamic and biomechanical variables in age-group swimmers

The aim of this research was to develop a path-flow analysis model for age-group swimmer’s speed based on anthropomeric, hydrodynamic and biomechanical determinants