Model launcher for wind tunnels Patent

Design and characteristics of device for launching models in wind tunnels without disturbance of air flo

Controlled release of free-falling test models

Releasing device, powered by a drill motor through an adjustable speed reducer, has a spinning release head with three retractable spring-loaded fingers. The fingers are retracted by manual triggering of a cable at the motor end of the unit

Mobile sampler for use in acquiring samples of terrestrial atmospheric gases

Samples of terrestrial atmospheric gasses from a free body of such gasses using a device characterized by a plurality of tubular bodies adapted to be mounted in side by side relation on a motorized highway vehicle in mutual parallelism with the axis of the normal path of travel for the vehicles. Each of the bodies is of a cylindrical configuration and has an axial opening at each of its opposite ends through which a linear flow path is defined. A pair of pivotally supported, spring-biased sealing caps is mounted adjacent to the ends of the body and continuously urged into a hermetic sealing relationship. A restraint for securing the caps against spring-urged pivotal displacement, includes a separable, normally tensioned line interconnecting the caps and an operable release mechanism for simultaneously releasing the caps for spring-urged displacement. A hot wire cutter is included for separating the line, whereby samples of air are trapped in the body as the caps are spring-driven to assume an hermetically sealed relation with the openings defined in each of the opposite ends of the body

Capacidad predictiva de los parámetros antropométricos

Nuestro objetivo fue establecer qué parámetros antropométricos y de maduración se correlacionan con el rendimiento en remo-ergómetro en una muestra de 114 adolescentes de ambos sexos sin experiencia previa en remo. Los resultados muestran una gran correlación entre masa corporal y rendimiento, aunque esta correlación disminuyó cuando la masa corporal se ajustó para compensar la mayor resistencia del lastre. La estatura, la longitud de piernas y la envergadura de brazos se correlacionaron moderadamente tras el ajuste de la masa corporal en los varones, pero no en las niñas. La compensación de la maduración antropométrica mostró una gran correlación con el rendimiento, pero disminuyó tras aplicar el ajuste por talla. La predicción de la estatura adulta reveló que pocos de estos adolescentes alcanzarían la estatura de los deportistas de élite de remo de peso libre. © 2011 Consell Català de l’Esport. Generalitat de Catalunya. Publicado por Elsevier España, S.L. Todos los derechos reservados

Russian Mail-Order Brides in the U.S.: A Cultural Psychology Perspective

The early 21st century saw a surge in the news coverage of the murders of mail-order brides in the United States. When American news outlets fixated on these gruesome stories, a spotlight was directed at the mail-order bride industry and the domestic abuse that oftentimes results in these marriages. Authorities agree that domestic violence in these marriages is expected to be more common than in ‘normal’ marriages (Scholes). Nonetheless, mail-order marriages are less likely to end in divorce than marriages overall in the United States: divorce rates in mail-order marriages for which the courtship period lasted more than 4 months were between 35.8 and 41.3 percent when compared to the overall US divorce rate which is 48 percent (Statistics Solutions, Inc). Even more surprisingly, domestic abuse was not reported as a significant factor that contributed to divorce in mail-order marriages. In the wake of such terrible violence, many Americans asked why these women were willing to come to the United States in the first place and moreover why they seem willing to remain in abusive marriages rather than divorce. The answer to these questions is best answered by the field of cultural psychology because mail-order bride’s actions which may seem inexplicable to Americans are largely motivated by their cultural background. Thus, viewing the Russian mail-order bride phenomenon as a collision between American men’s and Russian women’s culturally-produced expectations of the marriage provides a richer understanding of why people willingly enter these marriages and additionally why domestic abuse is a frequent outcome of these arrangements. Understanding these marriages from the perspective of both the men and the women involved can help law makers institute policies that can better protect this population that is vulnerable to domestic violence

Capacitat predictiva dels paràmetres antropomètrics

El nostre objectiu fou establir quins paràmetres antropomètrics i de maduració es correlacionen amb el rendiment en rem-ergòmetre en una mostra de 114 adolescents d’ambdós sexes, sense experiència prèvia en rem. Els resultats mostren una gran correlació entre massa corporal i rendiment, tot i que aquesta correlació disminuí quan la massa corporal s’ajustà per compensar la major resistència del llast. L’estatura, la longitud de cames i l’envergadura de braços es correlacionaren moderadament en haver ajustat la massa corporal en els nois, però no en les noies. La compensació de la maduració antropomètrica mostrà una gran correlació amb el rendiment, però disminuí després d’aplicar l’ajust per talla. La predicció de l’estatura adulta revelà que pocs d’aquests adolescents creixerien fins a assolir l’estatura dels esportistes d’elit de rem de categoria oberta. © 2011 Consell Català de l’Esport. Generalitat de Catalunya. Publicat per Elsevier España, S.L. Tots els drets reservats

Cineantropometria dels jugadors juvenils campions mundials d’hoquei

Introducció i objectius: Existeix un buit d’informació sobre l’antropometria i l’efecte de la data de naixement dels jugadors d’hoquei juvenils d’elit. Objectius: a) Descriure les característiques antropomètriques dels jugadors d’hoquei juvenils d’elit d’Argentina; b) establir diferències en el físic, l’edat esportiva i l’efecte de la data de naixement entre els jugadors seleccionats per al mundial juvenil i els que en quedaren exclosos, i c) establir si existeixen diferències en les longituds dels membres entre aquests jugadors d’elit i una mostra normal de referència adulta local. Mètode: Es van avaluar longituds, alçades, diàmetres, perímetres, plecs i massa corporal de 35 jugadors d’hoquei juvenils que formaven la base i la selecció argentina del mundial de 2005 (edat 19,0 ± 1,0 anys; pes 70,7 ± 5,4 kg; alçada 176,4 ± 6,4 cm). Paral·lelament es va fer l’enquesta sobre l’edat esportiva i la data de naixement. Resultats: No es van trobar diferències estadísticament significatives en les variables estructurals de l’esquelet entre aquesta mostra i una referència normativa local, ni entre la submostra seleccionada i els no seleccionats, ni en l’edat esportiva (p = 0,11) ni en l’efecte de data de naixement (p = 0,11). Conclusions: L’hoquei masculí és un esport amb uns requeriments d’estructura òssia normals, i sense efecte de data de naixement, a l’Argentina

Predictive ability of anthropometry and maturation parameters

We aimed to establish which anthropometric and maturity offset parameters correlate with rowing ergometer performance in a sample of 114 adolescent, rowing-inexperienced boys and girls. Results showed high correlations between body mass and performance, but these reduced when body mass was scaled to account for increased on-water drag resistance. Height, leg length and arm span remained moderately correlated after size-adjustment in boys, but not in girls. Anthropometric maturity offset showed a high correlation with performance, but decreased with size-adjustment. Final height estimation revealed that few of these adolescents would reach the height of elite open-weight competitors. © 2011 Consell Català de l’Esport. Generalitat de Catalunya. Published by Elsevier España, S.L. All rights reserved

Kinanthropometry of world champion junior male field hockey players

Introduction and purpose There is a lack of published data on the anthropometric and relative-age effect of elite youth field hockey players

Multilevel genetic analyses of two European supercolonies of the Argentine ant, Linepithema humile.

Some ants have an extraordinary unicolonial social organization, whereby individuals mix freely among physically separated nests. Recently, it was shown that the European population of Linepithema humile consisted of two enormous unicolonial supercolonies. Workers of the same supercolony are never aggressive to each other. In contrast, aggressiveness is invariably high between workers from different supercolonies. Here we investigated whether gene flow occurs between two supercolonies. We identified a contact zone in which we sampled 46 nests. For each nest, aggression tests were conducted against workers from reference nests from both supercolonies. Workers were always very aggressive towards workers of one of the supercolonies but not to workers of the other. Thus, all nests could be clearly assigned to one of the two supercolonies. For 22 of the 46 nests, we genotyped 15-16 workers at five microsatellite loci. A four-level hierarchical analysis of variance revealed very strong genetic differentiation between the two supercolonies (F(SUPERCOLONY-TOTAL) = 0.541) and low differentiation between sectors (i.e. group of nests connected together with trails) within supercolonies (F(SECTOR-SUPERCOLONY) = 0.064). The very high differentiation between the two supercolonies indicates a lack of ongoing gene flow, a conclusion further bolstered by the finding that the two supercolonies share no common alleles at two of the five microsatellite loci. A Bayesian clustering method also revealed the occurrence of two distinct clusters. These clusters exactly match the grouping obtained by aggression tests. None of the 332 genotyped individuals were admixed despite the fact that some nests of the two supercolonies were separated by less than 30 m. These results demonstrate that the two supercolonies have completely separate gene pools