Next-to-eikonal corrections in the CGC: gluon production and spin asymmetries in pA collisions

We present a new method to systematically include corrections to the eikonal approximation in the background field formalism. Specifically, we calculate the subleading, power-suppressed corrections due to the finite width of the target or the finite energy of the projectile. Such power-suppressed corrections involve Wilson lines decorated by gradients of the background field - thus related to the density - of the target. The method is of generic applicability. As a first example, we study single inclusive gluon production in pA collisions, and various related spin asymmetries, beyond the eikonal accuracy.Comment: 34 pages, new reference added, some typos correcte

Medium-induced soft gluon radiation in DIS

We study color coherence effects on the medium-induced soft gluon radiation off an asymptotic quark hit by a virtual photon traversing a hot and dense QCD medium. The transverse momentum spectrum of the emitted gluon is computed at 1st order in the opacity expansion. The interference effects between the initial and final state radiation modify the soft gluon spectrum when a finite angle between the incoming and outgoing quarks is considered, presenting a soft divergence. We comment on possible implications on observables in eA collisions.Comment: 4 pages, 2 figure, Proceedings of DIS 2012, Bonn, German

BODY CONDITION OF THE UPLAND SANDPIPER (BARTRAMIA LONGICAUDA) EN ROUTE THROUGH CENTRAL MEXICO

Abstract∙ There is little information on the body condition of the Upland Sandpiper (Bartramia longicauda) during migration. We measured biometric traits and body condition parameters of B. longicauda in central Mexico in 2016 and 2017. Mean morphometric values were 170.4 ± 4.3 mm (wing length), 28.9 ± 1.7 mm (bill length), 61.5 ± 2.2 mm (head length), and 55.3 ± 2.6 mm (tarsus length). Mean body condition parameters were 169.7 ± 24.1 g (body weight), and 4.6 ± 1.8 (fat score). Body condition values were higher during 2017 than 2016 (P < 0.05) but similar between sexes and sites. Fluctuating asymmetry (FA) was low compared to other studies, but was present in rectrices, tarsus, and wings. We found a negative correlation between wing FA and fat score, and a positive correlation between body weight and fat score, suggesting that birds with higher fat scores were in better condition during molt, leading to lower asymmetry. Our Data showed a 1:1.6 male:female ratio, similar across years and sites. Contrary to other studies, we found no significant sexual size dimorphism. Birds in our sample had higher body weight, tarsus, and wing length but were similar in head length to birds wintering in South America, but smaller than birds from Minnesota. We recommend carrying out further studies on stop-over sites to contribute to a better understanding of patterns on the functional ecology of the species. Resumen ∙ Condición corporal del Zarapito Ganga o Batitú (Bartramia longicauda) en ruta a través del centro de México Existe poca información sobre la condición corporal del Zarapito Ganga o Batitú (Bartramia longicauda) durante la migración. Medimos parámetros de condición corporal de B. longicauda en el centro de México en 2016 y 2017. Los valores morfométricos promedio fueron 170.4 ± 4.3 mm (ala), 28.9 ± 1.7 mm (culmen), 61.5 ± 2.2 mm (cabeza) y 55.3 ± 2.6 mm (tarso). Los parámetros promedio de condición corporal fueron 169.7 ± 24.1 g (peso corporal) y 4.6 ± 1.8 (grasa). Los valores de condición corporal fueron mayores durante 2017 que durante 2016 (P < 0.05), aunque similares entre sexos y sitios. La asimetría fluctuante (AF) fue baja comparada a otros estudios, aunque estuvo presente en rectrices, tarsos y alas. Encontramos una correlación negativa entre AF en alas y grasa, y una correlación positiva entre peso corporal y grasa, lo cual sugiere que las aves con mayores valores de grasa se encontraban en mejor condición durante la muda de plumaje, conduciendo a menor asimetría. Nuestros datos mostraron una tasa macho:hembra de 1:1.6, similar entre años y sitios. Contrario a otros estudios, no encontramos dimorfismo sexual significativo. Las aves en nuestra muestra tuvieron mayor peso corporal, tarso y longitud de ala, pero fueron similar en longitud de cabeza a aves de Sudamérica, pero menores a aves de Minnesota. Recomendamos llevar a cabo más estudios en sitios de escala para contribuir a un mejor entendimiento de los patrones en la ecología funcional de la especie

Application of Fractional Calculus to Oil Industry

In this chapter, we present a discussion about the practical application of the fractal properties of the medium in the mathematical model through the use of fractional partial derivatives. We present one of the known models for the flow in saturated media and its generalization in fractional order derivatives. In the middle section, we present one of the main arguments that motivate the use of fractional derivatives in the porous media models, this is the Professor Nigmatullin’s work. The final part describes the process for obtaining the coupled system of three equations for the monophase flow with triple porosity and triple permeability, briefly mentioning the method used for the first solutions of the system

Cholinergic signaling plasticity maintains viscerosensory responses during Aspiculuris tetraptera infection in mice small intestine

"Intestinal parasites alter gastrointestinal (GI) functions like the cholinergic function. Aspiculuris tetraptera is a pinworm frequently observed in laboratory facilities, which infests the mice cecum and proximal colon. However, little is known about the impact of this infection on the GI sensitivity. Here, we investigated possible changes in spontaneous mesenteric nerve activity and on the mechanosensitivity function of worm-free regions of naturally infected mice with A. tetraptera. Infection increased the basal firing of mesenteric afferent nerves in jejunum. Our findings indicate that nicotinic but not muscarinic receptors, similarly affect spontaneous nerve firing in control and infected animals; these axons are mainly vagal. No difference between groups was observed on spontaneous activity after nicotinic receptor inhibition. However, and contrary to the control group, during infection, the muscarinic signaling was shown to be elevated during mechanosensory experiments. In conclusion, we showed for the first time that alterations induced by infection of the basal afferent activity were independent of the cholinergic function but changes in mechanosensitivity were mediated by muscarinic, but not nicotinic, receptors and specifically by high threshold nerve fibers (activated above 20 mm Hg), known to play a role in nociception. These plastic changes within the muscarinic signaling would function as a compensatory mechanism to maintain a full mechanosensory response and the excitability of nociceptors during infection. These changes indicate that pinworm colonic infection can target other tissues away from the colon.

Condiciones mínimas para alcanzar un aprendizaje significativo a través de la red social Whatsapp

El presente texto es la reflexión a las diferentes interacciones educativas mediadas por la red social Whatsapp en épocas de pandemia de las instituciones educativas Ciudadela Cuba y San Antonio de Padua, de Pereira Risaralda, para el año en curso 2020, con el objetivo de Identificar las condiciones mínimas que se necesitan para alcanzar un aprendizaje significativo a través del uso de la red social Whatsapp..

Propuesta de un sistema de gestión de seguridad e higiene laboral en el Recinto Universitario Carlos Fonseca Amador (RUCFA), de la Universidad Nacional Autónoma de Nicaragua, durante el periodo de Marzo a Junio del 2012

El presente estudio investigativo de higiene y seguridad laboral fue realizado en el Recinto Universitario Carlos Fonseca Amador (RUCFA), el cual está ubicado frente a la Funeraria La Católica, en el Distrito IV en Managua. Este se desarrolla con fines de prevenir y reducir los riesgos que ponen en peligro a trabajadores y estudiantes, a través de la señalización de los diferentes riesgos existentes, así como la señalización de las rutas de evacuación. Cabe señalar, que al momento de identificar los riesgos lo hicimos con ayuda de técnicas tales como: La observación directa Check list, Diagrama Causa-Efecto Análisis FODA Encuestas Entrevistas Es de gran importancia mencionar que el plan de emergencia que se realizo en el Recinto Universitario Carlos Fonseca Amador, implica solamente la metodología de acción sin la descripción específica a quien recurrir en caso de desastre, ya que el comité de higiene y seguridad no existe en dicho recinto y como podrá entender la actividad de creación del comité y brigadas de desastre corresponde a la área de higiene y seguridad tanto como a la comisión mixta de la organización que tampoco hay en el recinto. Las acciones a tomar establecidas en el plan de contingencia son para desastres como incendios y sismos o terremotos ya que estos son los desastres que pueden ocasionar mayores daños al recinto, por la localización del mismo. La elaboración del Reglamento Técnico Organizativo (RTO) es con el propósito que la institución tenga algunas de las herramientas básicas que establece la Ley 618, con el fin de regular el comportamiento de los trabajadores como complemento a las medidas de prevención y protección. Propuesta de un Sistema de Gestión de Seguridad e Higiene Laboral en el Recinto Universitario Carlos Fonseca Amador (RUCFA

La desinformación como elemento esencial en la discriminación de las personas con síndrome de Down: cada uno a su tiempo

En torno al Síndrome de Down, existen una serie versiones y datos, difundidos a través de distintos medios, que no son otra cosa sino mitos que expresan un profundo desconocimiento, producto de la desinformación de este tema, que llega a sociedad en su conjunto. Por ello, resulta fundamental que todas las personas conozcamos de las potencialidades de los poseedores de esta condición, que no es una enfermedad sino un estado genético, el mismo que con adecuadas herramientas educativas, impartidas desde muy temprana edad, incluso antes de la pre escolar, formen un ser con igualdad de condiciones en su desarrollo como ser humano. De esta manera, con la generación de información adecuada, difundida a través del uso de distintos medios, la sociedad en su conjunto, tendrá las condiciones para evitar la discriminación no solo a personas con Síndrome de Down sino a todas las personas con capacidades especiales

Endothelial Activin Receptor-Like Kinase 1 (ALK1) Regulates Myofibroblast Emergence and Peritubular Capillary Stability in the Early Stages of Kidney Fibrosis

This work was supported by grants from Instituto de Salud Carlos III, Ministerio de Ciencia e Innovación: PI18/00996 and RETICS RD016/0009/0025 (REDINREN), co-funded by FEDER funds, and from Consejeria de Educación, Junta de Castilla y León: IES160P20 and Universidad de Salamanca (Programas Propios de la Agencia de Gestión de la Investigación).[EN]Renal tubulo-interstitial fibrosis is characterized by the excessive accumulation of extracellular matrix (ECM) in the tubular interstitium during chronic kidney disease. The main source of ECM proteins are emerging and proliferating myofibroblasts. The sources of myofibroblasts in the renal tubular interstitium have been studied during decades, in which the epithelial contribution of the myofibroblast population through the epithelial-to-mesenchymal (EMT) process was assumed to be the major mechanism. However, it is now accepted that the EMT contribution is very limited and other mechanisms such as the proliferation of local resident fibroblasts or the transdifferentiation of endothelial cells seem to be more relevant. Activin receptor-like kinase 1 (ALK1) is a type I receptor which belongs to the transforming growth factor beta (TGF-β) superfamily, with a key role in tissue fibrosis and production of ECM by myofibroblast. Predominantly expressed in endothelial cells, ALK1 also plays an important role in angiogenesis and vessel maturation, but the relation of these processes with kidney fibrosis is not fully understood. We show that after 3 days of unilateral ureteral obstruction (UUO), ALK1 heterozygous mice (Alk1 +/- ) display lower levels of kidney fibrosis associated to a lower number of myofibroblasts. Moreover, Alk1 +/- mice have a lower degree of vascular rarefaction, showing improved peritubular microvasculature after UUO. All these data suggest an important role of ALK1 in regulating vascular rarefaction and emergence of myofibroblasts

Acquisition of Knowledge and Practical Skills after a Brief Course of BLS-AED in First-Year Students in Nursing and Physiotherapy at a Spanish University

[EN] Out-of-hospital cardiorespiratory arrest is one of the leading causes of death in the Western world. Early assistance with quality Cardiopulmonary Resuscitation (CPR) and the use of a defibrillator may increase the percentage of survival after this process. The objective of this study was to evaluate the effect of CPR training and the management of an Automatic External Defibrillator (AED). A descriptive, cross-sectional, observational study was carried out among students in the first year of a Nursing and Physiotherapy degree of the University of León. To achieve this goal, a theoretical-practical educational intervention of four hours’ duration which included training on CPR, AED and Basic Life Support (BLS) was carried out. A total of 112 students were included. The results showed an increase in theoretical knowledge on BLS as well as on CPR and AED, and practical skills in CPR and AED management. A theoretical exposition of fifteen minutes and the practical training of CPR wasenough for the students to acquire the necessary theoretical knowledge, although the participants failed to reach quality criteria in CPR. Only 35.6% of students reached the right depth in compressions. Also, ventilation was not performed properly. Based on the results, we cannot determine that the percentage of overall quality of CPR was appropriate, since 57.6% was obtained in this respect and experts establish a value higher than 70% for quality CPR. There was a clear relationship between sex, weight, height and body max index (BMI), and quality CPR performance, being determinant variables to achieve quality parameters. Currently, Basic Life Support training in most universities is based on training methods similar to those used in the action described. The results obtained suggest implementing other training methods that favour the acquisition of quality CPR skills.S