Searching for the symbolic dimensions of la tunita, Sierra de Ancasti, Catamarca, Argentina

En este trabajo analizamos las dimensiones materiales, simbólicas y subjetivas de un particular espacio emplazado en la Sierra de Ancasti (provincia de Catamarca, noroeste argentino) conocido como La Tunita. Alegamos que singulares atributos naturales y espaciales favorecieron su incorporación a la dinámica social durante el Período de Integración Regional (ca. s. III d.C. hasta el s. XI o XII). La Tunita se distingue por un importante conjunto de manifestaciones rupestres que visibilizan la cosmovisión Aguada en una vía de transito que articula la Sierra de Ancasti con el oeste catamarqueño. Este lugar habría jugado un importante rol al incidir de manera significativa en el plano simbólico-ideológico, permitiendo ordenar el entorno natural y transformarlo en un espacio social de gran significación en el contexto macroregional. No obstante el predominio de la impronta Aguada, la evidencia sugiere que otros grupos sociales en su devenir histórico pudieron haber operado desde una lógica similar. Asumimos que algunas imágenes de La Tunita guardan relación con los conflictos y tensiones sociales que parecen haber ocurrido en tiempos de Aguada. Así planteamos que las imágenes y ciertos rituales se constituyeron en aliados importantes en el ejercicio del control y el poder tanto al interior de la sociedad como para reafirmarse ante otros grupos, en momentos donde la interacción social en un amplio territorio debió requerir la adopción de prácticas tendientes a reforzar aspectos ideológicos en determinados lugares.In this paper we will analyse the material, symbolic, and subjective dimensions of a very particular space geographically located in Sierra de Ancasti (Province of Catamarca, in the north western of Argentina) known as La Tunita. We argue that several and unique natural and spatial attributes in La Tunita favoured its incorporation to the social dynamic during the Regional Period of Integration (ca. s. III D.C. – s. XI / XII). La Tunita distinguished itself for the existence of an important array of rock art manifestations which in turn materialize the Aguada culture cosmovision. This place would have played an important role in infl uencing significantly at a symbolic-ideological level, allowing arranging the natural environment and transforming it into a social space of great signifi cance in the macro regional context. Despite of the prevalence of Aguada imprint, evidence suggests that other social groups in the course of history could have operated from a similar logic. We assume that some pictures of La Tunita are related to the confl icts and social tensions that seem to have occurred in times of Aguada. In this way, we pose that the images and some rituals have become important allies in the exercise of control and power within society to assert against other groups when social interaction in a vast territory should have required the adoption of practices which reinforce some ideological aspects in certain places.Fil: Nazar, Carlos Domingo. Universidad Nacional de Catamarca. Escuela de Arqueología; ArgentinaFil: de la Fuente, Guillermo Adrian. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Catamarca. Escuela de Arqueología; ArgentinaFil: Dulout, Luis Noel. Universidad Nacional de Catamarca; Argentin

Hilbert-type operator induced by radial weight on Hardyspaces

We consider the Hilbert-type operator defined by Hω(f)(z)=∫10f(t)(1z∫z0Bωt(u)du)ω(t)dt, where {Bωζ}ζ∈D are the reproducing kernels of the Bergman space A2ω induced by a radial weight ω in the unit disc D. We prove that Hω is bounded on the Hardy space Hp, 1<p<∞ , if and only if sup0≤r<1ωˆ(r)ωˆ(1+r2)<∞,(†) and sup0<r<1(∫r01ωˆ(t)pdt)1p(∫1r(ωˆ(t)1−t)p′dt)1p′<∞, where ωˆ(r)=∫1rω(s)ds . We also prove that Hω:H1→H1 is bounded if and only if († ) holds and supr∈[0,1)ωˆ(r)1−r(∫r0dsωˆ(s))<∞. As for the case p=∞ , Hω is bounded from H∞ to \mathord \mathrm{BMOA}, or to the Bloch space, if and only if (†) holds. In addition, we prove that there does not exist radial weights ω such that Hω:Hp→Hp, 1≤p<∞, is compact and we consider the action of Hω on some spaces of analytic functions closely related to Hardy spaces.Funding for open access charge: Universidad de Málaga / CBUA Funding for open access publishing: Universidad Málaga/CBU

Efficient numerical calculation of drift and diffusion coefficients in the diffusion approximation of kinetic equations

In this paper we study the diffusion approximation of a swarming model given by a system of interacting Langevin equations with nonlinear friction. The diffusion approximation requires the calculation of the drift and diffusion coefficients that are given as averages of solutions to appropriate Poisson equations. We present a new numerical method for computing these coefficients that is based on the calculation of the eigenvalues and eigenfunctions of a Schr¨odinger operator. These theoretical results are supported by numerical simulations showcasing the efficiency of the method

Ejercicios hidrogimnásticos que contribuyan al fortalecimiento de los principales grupos musculares que intervienen en el trabajo de parto de mujeres de la Comunidad Hermanos Barcón del municipio Pinar del Río

Este trabajo aborda un problema de gran importancia y actualidad para todo el personal que se encuentra trabajando directamente con la mujer embarazada, pues trata aspectos enmarcados en la elaboración de una Propuesta para una estructuración de ejercicios Hidrogimnásticos que contribuyan al fortalecimiento de los principales grupos musculares que intervienen en el trabajo de parto en mujeres de la comunidad “Hermanos Balcón” del municipio Pinar del Rí

Gating mechanism of elongating β-ketoacyl-ACP synthases.

Carbon-carbon bond forming reactions are essential transformations in natural product biosynthesis. During de novo fatty acid and polyketide biosynthesis, β-ketoacyl-acyl carrier protein (ACP) synthases (KS), catalyze this process via a decarboxylative Claisen-like condensation reaction. KSs must recognize multiple chemically distinct ACPs and choreograph a ping-pong mechanism, often in an iterative fashion. Here, we report crystal structures of substrate mimetic bearing ACPs in complex with the elongating KSs from Escherichia coli, FabF and FabB, in order to better understand the stereochemical features governing substrate discrimination by KSs. Complemented by molecular dynamics (MD) simulations and mutagenesis studies, these structures reveal conformational states accessed during KS catalysis. These data taken together support a gating mechanism that regulates acyl-ACP binding and substrate delivery to the KS active site. Two active site loops undergo large conformational excursions during this dynamic gating mechanism and are likely evolutionarily conserved features in elongating KSs

Smoking as a Risk Factor for Surgical Site Complications in Implant-Based Breast Surgery

Background Smoking is a cause of many postoperative complications, including delayed wound healing, tissue necrosis, and reconstructive flap loss. However, there is a paucity of evidence-based guidelines for smoking cessation in patients undergoing implant-based breast surgery. Objective The objective of this study was to determine if smoking is associated with wound dehiscence or superficial/deep surgical site infection (SSI) in women undergoing implant-based breast surgery. Methods Using the American College of Surgeons National Surgical Quality Improvement Program, data was obtained of U.S. adult females (n=10,077) between the ages of 18 and 70 who underwent insertion of a breast prosthesis from 2014 to 2016. The patient's preoperative smoking status, demographics, and comorbidities were analyzed to determine association with wound dehiscence, superficial SSI, and deep SSI. Unadjusted and adjusted logistic regression analyses were used to calculate odds ratios (OR) and 95% confidence intervals (95% CI). Results Patients who smoked had a statistically significant higher proportion of wound complications (2.4%) compared to non-smokers (1.3%; p Conclusions Our study suggests that smoking is an independent risk factor for postoperative complications in patients undergoing implant-based breast surgery. These results have significant clinical implications, as increased precautions can be taken in smokers undergoing breast surgery to minimize postoperative wound complications. Future studies may determine the optimal amount of time that patients should abstain from smoking prior to implant-based breast surgery.Peer reviewe

Discovering Conversation Spaces in the Public Discourse of Gender Violence: a Comparative Between Two Different Contexts

A huge factor in gender-based violence is perception and stigma, revealed by public discourse. Topic modelling is useful for discourse analysis and reveals prevalent topics and actors. This study aims to find and compare examples of collectivist and individualist conversation spaces of gendered violence by applying Principal Component Analysis, NGram analysis and word association in two gender violence cases which occured in the different contexts of the Philippines and the United States. The data from the Philippines consist of 2010-2011 articles on the 1991 Vizconde Massacre and the data from the United States consist of 2016-2017 articles from the 2015 Stanford Rape Case. Results show that in both cases’ conversation space there is a focus on institutions involved in the cases that does not really change over time, and a time-dependent conversation space for victims. Even in two different contexts of gender violence, patterns in conversation space appear simila

Smoking as a Risk Factor for Surgical Site Complications in Implant-Based Breast Surgery

Background Smoking is a cause of many postoperative complications, including delayed wound healing, tissue necrosis, and reconstructive flap loss. However, there is a paucity of evidence-based guidelines for smoking cessation in patients undergoing implant-based breast surgery. Objective The objective of this study was to determine if smoking is associated with wound dehiscence or superficial/deep surgical site infection (SSI) in women undergoing implant-based breast surgery. Methods Using the American College of Surgeons National Surgical Quality Improvement Program, data was obtained of U.S. adult females (n=10,077) between the ages of 18 and 70 who underwent insertion of a breast prosthesis from 2014 to 2016. The patient's preoperative smoking status, demographics, and comorbidities were analyzed to determine association with wound dehiscence, superficial SSI, and deep SSI. Unadjusted and adjusted logistic regression analyses were used to calculate odds ratios (OR) and 95% confidence intervals (95% CI). Results Patients who smoked had a statistically significant higher proportion of wound complications (2.4%) compared to non-smokers (1.3%; p Conclusions Our study suggests that smoking is an independent risk factor for postoperative complications in patients undergoing implant-based breast surgery. These results have significant clinical implications, as increased precautions can be taken in smokers undergoing breast surgery to minimize postoperative wound complications. Future studies may determine the optimal amount of time that patients should abstain from smoking prior to implant-based breast surgery.Peer reviewe

Determinación de la eficiencia del proceso de lodos activados para la remoción de carga orgánica en las aguas residuales domesticas del sistema Imhoff en la provincia de Asunción-Ancash 2015

En esta tesis de investigación se evaluara la eficiencia del proceso de lodos activados para la remoción de carga orgánica expresados en demanda bioquímica de oxígenos y solidos suspendidos totales, aplicando tres concentraciones diferentes de lodos activos y tres tratamientos por cada uno (9 tratamientos), para las aguas residuales domesticas del sistema Imhoff en la provincia de Asunción-Distrito de Chacas-departamento de Ancash. El proceso de lodos activo tiene tres unidades o componentes principales, sedimentador primario, taque de aireación y sedimentador secundario. Una vez finalizado de construir la planta piloto de lodos activados se hicieron las pruebas de aireación, donde se midió el oxígeno disuelto durante 2. 5 horas, para evaluar si está o se asemeja a las condiciones necesarias para dicho tratamiento. Antes de empezar se sacó dos muestras iniciales de cada tratamiento para que estas sean llevadas al laboratorio en Lima, para sus respectivos análisis de DBO y STT, con la finalidad que estos resultados sean patrones de comparación al finalizar cada tratamiento. Al final de todo el tratamiento se obtuvo una eficiencia de remoción de carga orgánica expresados en demanda bioquímica de oxigeno (DBO) en un 53% y solidos suspendidos totales (SST) en un 92% con la concentración de lodos activos de 8.5 litros, llegando a estar dentro de los estándares de calidad ambientales de categoría III, así mismo cumpliendo con las recomendaciones de la norma de saneamiento OS 090