Spatial dispersion in Casimir forces: A brief review

We present the basic principles of non-local optics in connection with the calculation of the Casimir force between half-spaces and thin films. At currently accessible distances $L$, non-local corrections amount to about half a percent, but they increase roughly as 1/L at smaller separations. Self consistent models lead to corrections with the opposite sign as models with abrupt surfaces.Comment: Proceedings of QFEXT05, Barcelona, Sept. 5-9, 200

Drama in Dialogic Read Alouds: Promoting Access and Opportunity for Emergent Bilinguals

In this report, we explore the potential for drama pedagogy in the classroom to support the engagement and growth of emergent bilingual students in language and literacy. We are focused on the use of drama to promote dialogic interactions during teacher read alouds. This study was conducted as a collaborative, action research investigation involving classroom teachers and university-based researchers. Our goals focused on three areas. First, we were interested in the impact of the drama intervention on comprehension. Second, we were interested in the responses of students to drama in read alouds with attention to differences in responses related to gender, grade level, skill level, and English Language Learner (school labeled) status. Third, we were interested in the students’ explanations for why (or why not) drama enhanced their engagement with the stories read. The findings suggest the power of incorporating drama to promote participation and dialogic interactions in support of language learnin

Evaluación de tres reguladores de crecimiento y un producto a base de micro y macro nutrientes más aminoácidos en la producción de melón (Cucumis melo L.) cultivar galia -hibrido solarnet

En la búsqueda de nuevas alternativas productivas de la región de Azuero, se han llevado a cabo investigaciones con especies de frutales para exportación aptas en esta zona, destacándose el uso de reguladores de crecimientos vegetal (giberelinas, citoquininas), vitaminas, aminoácidos, micro y macronutrientes con el fin de aumentar la productividad y calidad del melón (Cucumis melo L.) En Panamá, se contempla la producción de frutas y hortalizas inocuas en el sistema de producción en campo y empaque. Actualmente la inocuidad es un factor determinante para que ingresen al mercado de exportación productos frutícolas, tal es el caso del fruto de melón (Cucumis melo L.) que se consume en fresco y está sujeto a contaminación de origen microbiano y agroquímico, lo que puede ocasionar daño a la salud del consumidor. El mercado globalizado actual demanda que el melón fresco este libre de microorganismos y residuos de plaguicidas. En este trabajo se evaluaron y manejaron los siguientes productos: tres reguladores vegetales de crecimiento (Agrokin V ®, Agrokin Plus ® y New Gibb ®) y un producto (Stimulus Plus ®) a base de micro y macro nutrientes mas aminoácidos en la producción de Melón (Cucumis melo L.) Cultivar Galia - Hibrido Solarnet” para mejorar su calidad y producción. El análisis estadístico evidencia diferencias significativas entre los tratamientos para las variables de calidad y rendimientos del fruto, mas no en los bloques. Los tratamientos con. (Agrokin V ®, Agrokin Plus ®, New Gibb ® y Stimulus Plus ®) demostraron ser eficientes en cuanto a diámetro y peso del fruto

Axially symmetric membranes with polar tethers

Axially symmetric equilibrium configurations of the conformally invariant Willmore energy are shown to satisfy an equation that is two orders lower in derivatives of the embedding functions than the equilibrium shape equation, not one as would be expected on the basis of axial symmetry. Modulo a translation along the axis, this equation involves a single free parameter c.If c\ne 0, a geometry with spherical topology will possess curvature singularities at its poles. The physical origin of the singularity is identified by examining the Noether charge associated with the translational invariance of the energy; it is consistent with an external axial force acting at the poles. A one-parameter family of exact solutions displaying a discocyte to stomatocyte transition is described.Comment: 13 pages, extended and revised version of Non-local sine-Gordon equation for the shape of axi-symmetric membrane