Analysing the charged scalar boson contribution to the charged-current BB meson anomalies

Experimental measurements collected by the BABAR, Belle, and LHCb experiments on different observables associated with the semileptonic transition $b \to c \tau \bar{\nu}_\tau$, indicate the existence of disagreement respect with the Standard Model predictions. We analyse the charged scalar boson contributions to these charged-current $B$ meson anomalies within the framework of two Higgs doublet model with the most general Yukawa couplings to quarks and leptons from the third generation, involving left-handed and right-handed (sterile) neutrinos. We perform a phenomenological study of the Yukawa couplings parameter space that accommodates these anomalies. We consider the most recent data from HFLAV world-average and Belle combination, and the upper limits ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau}) < 30\%$ and $10\%$. In addition, we include in our study the prospect measurements on $R(D^{(\ast)})$ that the Belle II experiment could achieve and explore, for the first time, the future implications for the corresponding charged scalar Yukawa couplings. This analysis updates the existing literature and includes new important observables. Our results show that current experimental $b\rightarrow c \tau \bar{\nu}_\tau$ data and Belle II projection favor the interpretation of a charged scalar boson interacting with right-handed neutrinos. Furthermore, as a side analysis regarding the charged scalar boson interpretation, we revisit the relation between $R(D^\ast)$ and ${\rm BR}(B_c^- \to \tau^- \bar{\nu}_{\tau})$ by investigating whether the claim that pseudoscalar new physics interpretations of $R(D^{\ast})$ are implausible due to the $B_c$ lifetime is still valid, to the light of the recent data and Belle II prospects on $R(D^{\ast})$. Lastly, we reexamine addressing the $R(D^{(\ast)})$ anomalies in the context of the 2HDM of Type II.Comment: 20 pages, 5 figures (14 plots), 7 Tables. V3: typos corrected, discussion improve

Editorial

Cordial saludo a toda la comunidad académica de nuestra Institución Universitaria, en especial a los estudiantes de nuestra facultad de psicología y el cuerpo docente, son ustedes la fuente de inspiración para continuar con este loable propósito de difundir los distintos trabajos desarrollados dentro de la facultad; de ustedes parte y hacia ustedes está dirigida la producción de cada uno de los escritos de la revista

Aula invertida en el logro de competencias del curso de Matemática en los estudiantes del primer semestre de la Escuela Superior de Tecnología SENATI, Independencia

La formación profesional de la Escuela Superior de Tecnología SENATI, está enfocada en la ejecución de tareas de investigación y desarrollo de tecnología. Los egresados poseen las competencias necesarias para aplicar los conocimientos tecnológicos logrados en los campos de la ingeniería y ciencias; así como la identificación y solución de problemas en materia de productos, procesos y materiales de producción con el objetivo de gestionar procesos eficientes y de calidad, es por eso que nuestros alumnos pasan por un exigente programa curricular en ciencias. La Escuela ha observado que parte de su población estudiantil del primer semestre no ha logrado las competencias del curso de matemáticas, se ha conseguido conversar de manera informal con los estudiantes y manifiestan que es complicado mantener la atención en clase, por la cantidad de información teórica y la poca comprensión del curso debido a sus anteriores instituciones educativas y es por ese motivo que no los estimula a estudiar, lo cual repercute directamente en el logro de competencias del curso. Esta investigación presenta un modelo pedagógico Aula invertida en el logro de competencias del curso de matemática en los estudiantes del primer semestre de la Escuela Superior de Tecnología SENATI, ahora el estudiante se hace partícipe directamente de su aprendizaje , consiste en invertir los momentos de estudio entre el docente y el estudiante .El alumno tiene acceso a herramientas tecnológicas (aula virtual , videos tutoriales, audio, etc), el docente sube material específicamente diseñado para el tema a realizar (debe ser de orden inferior de acuerdo a la taxonomía de Bloom),con la ventaja que el alumno puede controlar el momento y tiempos adecuados para revisar el material.The professional training of the SENATI Higher School of Technology is focused on the execution of research and technology development tasks. Graduates possess the necessary skills to apply the technological knowledge achieved in the fields of engineering and science; as well as the identification and solution of problems in terms of products, processes and production materials with the objective of managing efficient and quality processes, that is why our students go through a demanding curriculum program in science. The School has observed that part of its student population in the first semester has not achieved the competencies of the mathematics course, it has been possible to talk informally with the students and state that it is difficult to maintain attention in class, due to the amount of theoretical information and the poor understanding of the course due to their previous educational institutions and that is why it does not stimulate them to study, which has a direct impact on the achievement of course competencies. This research presents a classroom pedagogical model invested in the achievement of mathematics course competencies in the students of the first semester of the SENATI Higher School of Technology, now the student is directly involved in their learning, it consists in inverting the moments of study between the teacher and the student. The student has access to technological tools (virtual classroom, video tutorials, audio, etc.), the teacher uploads material specifically designed for the subject to be performed (must be of a lower order according to Bloom's taxonomy) , with the advantage that the student can control the time and appropriate times to review the material

Study of some biological and nutritional factors that influence nodulation by Frankia on red alder (Alnus rubra) and snowbrush (Ceanothus velutinus) within three age-class Douglas-fir forests in H.J. Andrews Experimental Forest, Oregon

Bioassays using red alder and snowbrush plants grown in soils collected from a clearcut, a young Douglas-fir plantation, and an old-growth stand were conducted. Sites are located at the Andrews Experimental Forest, Oregon. In the first bioassays, more alder than snowbrush plants survived and nodulated. Of the plants that survived, more red alder plants nodulated when grown in clearcut soils than in other soils, and more snowbrush nodulated when grown in soils from the young stand. With the exception of acetylene reduction per plant, response variables differed among the three sites, however soil samples within sites were also a significant source of variation. Red alder biomass and nodule weight were highest when plants were grown in clearcut soils. Snowbrush biomass and nodule weight were highest when grown in soils from the young stand. The biomass of snowbrush plants grown in clearcut soils averaged higher in bottom slope soils than in soils from any other position. Two additional bioassays using red alder and snowbrush plants consisted of adding sequentially to clearcut soils Frankia plus macronutrients, micronutrients, mycorrhizal fungi, and Pseudomonas fluorescens. There was no interaction between treatment and location for either species. There were no significant treatment effects for snowbrush, but there were significant treatment effects for red alder. Red alder seedlings given Frankia and macronutrients had greater biomass and reduced more acetylene than seedlings grown without additions. Adding Alpova diplophloeus increased acetylene reduction by 33% over that attained with Frankia and macronutrients alone. The combined effect of Frankia, macronutrients and the mycorrhizal fungus was to increase acetylene reduction by 136% over controls. Adding micronutrients to Frankia and macronutrients reduced acetylene reduction by nearly one-half, completely negating the positive effect of the Frankia and macronutrients. The presence of the mycorrhizal fungus appeared to buffer the negative effects of micronutrients. Red alder seedlings grown in upper slope soil had greater biomass and reduced more acetylene than seedlings grown in down slope soil. In contrast, snowbrush plants grown in bottom slope soil had greater biomass, nodule weight, and reduced more acetylene than seedlings grown in any of the other slope positions. Because slope positions were not replicated, any conclusions we draw apply only to the four locations we measured on the single slope

Teselados en el club de matemáticas

Cuando se habla de teselados por lo general se suelen relacionar con embaldosados del plano empleando polígonos regulares o algunas figuras construidas a partir de deformaciones de ´estos polígonos; el curso titulado Matemática y Arte I, ofrecido en el club de matemáticas de la UPN en el primer semestre del 2006, no fue ajeno a esto, sin embargo, se produjeron también resultados de interés en relación con la construcción de teselados duales y teselados construidos con polígonos irregulares. Los resultados que se presentan corresponden a los obtenidos por los niños y jóvenes que participaron del curso y orientados por los autores de esta memoria

Expression of Fluorescent Genes in Trypanosoma cruzi and Trypanosoma rangeli (Kinetoplastida: Trypanosomatidae): Its Application to Parasite-Vector Biology

Two Trypanosoma cruzi-derived cloning vectors, pTREX-n and pBs:CalB1/CUB01, were used to drive the expression of green fluorescent protein (GFP) and DsRed in Trypanosoma rangeli Tejera, 1920, and Trypanosoma cruzi Chagas, 1909, isolates, respectively. Regardless of the species, group, or strain, parasites harboring the transfected constructs as either episomes or stable chromosomal integrations showed high-level expression of fluorescent proteins. Tagged flagellates of both species were used to experimentally infect Rhodnius prolixus Stal, 1953. In infected bugs, single or mixed infections of T. cruzi and T. rangeli displayed the typical cycle of each species, with no apparent interspecies interactions. In addition, infection of kidney monkey cells (LLC-MK2) with GFP-T. cruzi showed that the parasite retained its fluorescent tag while carrying out its life cycle within cultured cells. The use of GFP-tagged parasites as a tool for biological studies in experimental hosts is discussed, as is the application of this method for copopulation studies of same-host parasitesFil: Guevara, Palmira. Universidad Central de Venezuela; VenezuelaFil: Dias, Manuel. Universidad de los Andes; ColombiaFil: Rojas, Agustina. Universidad de los Andes; ColombiaFil: Crisante, Gladys. Universidad de los Andes; ColombiaFil: Abreu Blanco, Maria Teresa. Universidad Central de Venezuela; VenezuelaFil: Umezawa, Eufrozina. Universidade de Sao Paulo; BrasilFil: Vazquez, Martin Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Levin, Mariano Jorge. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Investigaciones en Ingeniería Genética y Biología Molecular "Dr. Héctor N. Torres"; ArgentinaFil: Añez, Nestor. Universidad de los Andes; ColombiaFil: Ramirez, Jose Luis. Instituto de Estudios Avanzados; Venezuel

Determinantes sociales y desigualdad en anemia en niños de 6 a 35 meses de edad: análisis de la Encuesta Demográfica y de Salud Familiar entre 2010 y 2017

Introducción El presente estudio tuvo como objetivo evaluar los determinantes sociales que explican mejor la prevalencia de anemia infantil que continúa elevada en el Perú. Materiales y métodos Se incluyó datos registrados en la Encuesta Demográfica y de Salud Familiar (ENDES). Se calculó la desigualdad absoluta y relativa para cada año desde el 2004 al 2017 con datos consolidados. Además, se obtuvo los datos de hemoglobina sanguínea registrados a través de datos individuales para los años 2010 y 2017. Finalmente, se realizó un análisis descomposición de Oaxaca - Blinder para establecer que determinantes sociales explican la brecha de la desigualdad en la distribución del promedio de la hemoglobina entre ricos y pobres para estos dos años. Resultados El análisis de descomposición de Oaxaca identificó que la brecha entre el promedio de hemoglobina entre los ricos y pobres fue explicada por las diferencias en las variables educación materna (11%), región (14%), el grupo de edad (2%) y de otras variables no estudiadas (46%) en el año 2017. En el 2010 la brecha es explicada únicamente por la región (23%) y de otras variables no implicadas en el estudio (60%). Además, la desigualdad absoluta y relativa no se ha modificado sustancialmente ni antes ni durante la implementación del “Plan Nacional 2014-2016”. Conclusión La brecha de desigualdad sobre la prevalencia de anemia se mantuvo elevada durante el tiempo estudiado. La educación materna, la región y grupo etario explicaron la desigualdad en los promedios de hemoglobina.Introduction The present study aimed to evaluate the social determinants that better explain the prevalence of childhood anemia, which is still high in Peru. Materials and methods Data registered in the Demographic and Family Health Survey (ENDES) were included. Absolute and relative inequality was calculated for each year from 2004 to 2017 with consolidated data. In addition, the blood hemoglobin data registered through individual data for the years 2010 and 2017 was obtained. Finally, a decomposition analysis of Oaxaca - Blinder was carried out to establish that social determinants explain the inequality gap in the distribution of the average of the hemoglobin between rich and poor for these two years. Results The decomposition analysis of Oaxaca identified that the gap between the average hemoglobin between the rich and the poor was explained by the differences in the variables maternal education (11%), region (14%), age group (2%) and of other variables not studied (46%) in 2017. In 2010 the gap is explained only by the region (23%) and of other variables not involved in the study (60%). Furthermore, absolute and relative inequality has not changed substantially either before or during the implementation of the "National Plan 2014-2016". Conclusion The inequality gap on the prevalence of anemia remained high during the time studied. Maternal education, region and age group explained the inequality in hemoglobin averages.Tesi

El consumo de servicios ecosistémicos endógenamente determinados en Bogotá, 2019 : una aproximación a su estado actual a partir de un índice compuesto

ilustraciones, gráficos, tablasTomando como unidad de análisis las Unidades de Planeamiento Zonal (UPZ) de Bogotá, se buscó, a través de la construcción de un diagnóstico sobre la demanda de los servicios ecosistémicos relacionados con la disponibilidad de agua, suelo habitable y aire limpio en la ciudad y apoyados en la posterior construcción de un índice compuesto, ofrecer la representación geoespacial del consumo diferenciado de los mismos. A partir de allí, se busca responder la pregunta orientadora de este trabajo: ¿Qué tan diferenciado es el consumo de Servicios Ecosistémicos del agua confiable, el aire puro y el suelo habitable en la metrópoli nacional?Taking as the unit of analysis the Zonal Planning Units (UPZ) of Bogotá, it was sought, through the construction of a diagnosis on the demand for ecosystem services related to the availability of water, living land and clean air in the city and supported by the subsequent construction of a composite index, offering the geospatial representation of their differentiated consumption. From there, it seeks to answer the guiding question of this work: ¿How different is the consumption of Ecosystem Services from reliable water, clean air and living land in the Colombian metropolis?Magíster en Gerencia para el DesarrolloMaestrí

Influence of the normal stresses to direction of shear flow in the rheology of concentrated kaolin suspensions

Due to the multiple applications that kaolin has, including the ceramic industry where it is used as a slurry with high solid concentrations, its rheological behavior is quite important in mixing, agitation and pumping stages. After characterizing the kaolin by applying XRD, XRF, SEM and particle size methods, a rheological evaluation was performed in a rotational rheometer which consisted of measuring the primary normal stress difference N1 by a method that delivered good reproducibility results. With N1 data it was obtained a kind of viscosity known as dilatant viscosity which was found only for those suspensions with a volumetric concentration higher than 0.13. This dilatant viscosity depends on the shear rate and the CV, and it was modeled with the power law structure having good coefficients of determination. Finally it was found that the dilatant viscosity with a CV= 0.2 is almost five times the value of the shear viscosity, thus demonstrating that for a better understanding of the deformation stage must be taken into account the normal stresses in shear flow happening in the kaolin concentrated suspension