4,669 research outputs found
The XDSPRES CL-based package for reducing OSIRIS cross-dispersed spectra
We present a description of the CL-based package XDSPRES, which aims at being
a complete reducing facility for cross-dispersed spectra taken with the Ohio
State Infrared Imager/Spectrometer, as installed at the SOAR telescope. This
instrument provides spectra in the range between 1.2um and 2.35um in a single
exposure, with resolving power of R ~ 1200. XDSPRES consists of two tasks,
namely xdflat and doosiris. The former is a completely automated code for
preparing normalized flat field images from raw flat field exposures. Doosiris
was designed to be a complete reduction pipeline, requiring a minimum of user
interaction. General steps towards a fully reduced spectrum are explained, as
well as the approach adopted by our code. The software is available to the
community through the web site http://www.if.ufrgs.br/~ruschel/software.Comment: 14 pages, 10 figure
Coordinación y gestión de crisis. El caso del gobierno federal y dos gobiernos subnacionales en México
The article analyzes how the Mexican subnational governments responded the COVID 19 outbreak during the first stage of the crisis. The response of two subnational governments whose territory is part of the largest metropolitan area in the country that has been the focus of the pandemic is presented. We ask about the coordination instruments to face COVID-19 between the federal policy and programs with the subnational governments and argue that, during the first stage of the management of the COVID-19 crisis the institutional and organizational design of the Mexican political-administrative system has had a relevant impact on the government’s response, as well in the coordination policies. The article demonstrates that in a crisis, coordination instruments do not depend on political parties but consist of a blend of weak and suitable articulation of policies of the subnational governments with the federal strategy, as well as the need to improve the instruments of collaboration between the various levels of government in the context of a healthcare system in transformation.El artículo analiza cómo respondieron los gobiernos subnacionales mexicanos al brote de COVID-19 durante la primera etapa de la crisis. Se presenta la respuesta de dos gobiernos subnacionales cuyo territorio forma parte de la mayor área metropolitana del país que ha sido foco de la pandemia. Nos preguntamos acerca de los instrumentos de coordinación para enfrentar el COVID-19 entre la política y los programas federales con los gobiernos subnacionales y argumentamos que, durante la primera etapa de la gestión de la crisis del COVID-19 el diseño institucional y organizacional del sistema político-administrativo mexicano ha tenido un impacto relevante en la respuesta del gobierno, así como en las políticas de coordinación. El artículo demuestra que, en una crisis, los instrumentos de coordinación no dependen de los partidos políticos, sino que consisten en una combinación de articulación débil y adecuada de las políticas de los gobiernos subnacionales con la estrategia federal, así como de la necesidad de mejorar los instrumentos de colaboración entre los gobiernos subnacionales en el contexto de un sistema de salud en transformación
Coherent State Description of the Ground State in the Tavis-Cummings Model and its Quantum Phase Transitions
Quantum phase transitions and observables of interest of the ground state in
the Tavis-Cummings model are analyzed, for any number of atoms, by using a
tensorial product of coherent states. It is found that this "trial" state
constitutes a very good approximation to the exact quantum solution, in that it
globally reproduces the expectation values of the matter and field observables.
These include the population and dipole moments of the two-level atoms and the
squeezing parameter. Agreement in the field-matter entanglement and in the
fidelity measures, of interest in quantum information theory, is also found.The
analysis is carried out in all three regions defined by the separatrix which
gives rise to the quantum phase transitions. It is argued that this agreement
is due to the gaussian structure of the probability distributions of the
constant of motion and the number of photons. The expectation values of the
ground state observables are given in analytic form, and the change of the
ground state structure of the system when the separatrix is crossed is also
studied.Comment: 38 pages, 16 figure
Stability of Tilo® tablets formulation obtained from dry extract of Justice pectoralis Jacq.
Justicia pectoralis Jacq., Acanthaceae, is a herb known popularly in Cuba as Tilo and used traditionally as sedative. The development in a solid pharmaceutical (Tablets 100 mg) using dry extract of Justicia pectolaris aqueous extract is of interest for the development of phytomedicines, which uses this active raw material. The aim of the present study was to carry out chemical and biological stability studies to the formulation. A method of coumarin determination by High Performance Liquid Chromatography (HPLC) was used and validated. The stability studies during different periods of time (24 months) showed a stability of the product stored at 32 ± 2 °C, and protected of the light.Justicia pectoralis Jacq., Acanthaceae é uma erva conhecida popularmente em Cuba como Tilo e utilizada tradicionalmente como sedativo. O desenvolvimento de formas farmacêuticas sólidas (comprimido 100 mg) usando extrato aquoso seco de J. pectoralis é de interesse no desenvolvimento de fitoterápicos que empreguem esse princípio ativo. O objetivo do presente estudo foi realizar estudos de estabilidade químicos e biológicos da formulação. Um método de determinação de cumarinas por Cromatografia Líquida de Alta Eficiência (CLAE) foi usado e devidamente validado. Os estudos de estabilidade durante diferentes períodos de tempo (24 meses) mostraram a estabilidade do produto preservado a 32 ± 2 °C e protegido da luz
Metodología de Diseño Conceptual de Sistemas Automatizados para Ambientes Educativos y de Servicios Tecnológicos
(Eng) This article shows the results of an applied investigation aimed to establish a general design methodology for
the modernization of automated systems oriented to modernization of physical and technological infrastructure
of the “Servicio Nacional de Aprendizaje” (SENA) in Colombia, with systems, equipment and applications
oriented to sustainability, efficiency and energy savings. The objective of this work is to "Propose a method
-
ology for the conceptual design of automated building systems". The methodology was applied to the design
of the automated system of the Technological Services Laboratory (LST) of the Center for Electricity
and Industrial Automation (CEAI)- SENA and its implementation constitutes a reference model for the
other SENA training centers to apply in order to improve the conditions of safety, comfort and energy
management in their facilities.(Spa) Este artículo es uno de los resultados de una investigación aplicada, realizada con el propósito de establecer una
metodología general de diseño de sistemas automatizados orientados a la modernización de la infraestructura
física y tecnológica del Servicio Nacional de Aprendizaje (SENA) en Colombia, con sistemas, equipos y aplica
-
ciones encaminadas a la sostenibilidad, la eficiencia y el ahorro. El reporte tiene como objetivo “Proponer una
metodología de diseño conceptual de sistemas automatizados de edificaciones”. La metodología propuesta fue
aplicada al diseño del sistema automatizado del Laboratorio de Servicios Tecnológicos (LST) del Centro de Elec
-
tricidad y Automatización Industrial CEAI – SENA y su implementación constituye en un modelo de referencia
para que los demás centros de formación del SENA la apliquen con el fin de mejorar las condiciones de seguridad,
confort y gestión energética en sus instalaciones
Galaxy interactions in IllustrisTNG-100, I: The power and limitations of visual identification
We present a sample of 446 galaxy pairs constructed using the cosmological simulation IllustrisTNG-100 at z = 0, with M_(FoF,dm)=10¹¹−10^(13.5) M⊙. We produce ideal mock SDSS g-band images of all pairs to test the reliability of visual classification schema employed to produce samples of interacting galaxies. We visually classify each image as interacting or not based on the presence of a close neighbour, the presence of stellar debris fields, disturbed discs, and/or tidal features. By inspecting the trajectories of the pairs, we determine that these indicators correctly identify interacting galaxies ∼45 per cent of the time. We subsequently split the sample into the visually identified interacting pairs (VIP; 38 pairs) and those which are interacting but are not visually identified (nonVIP; 47 pairs). We find that VIP have undergone a close passage nearly twice as recently as the non-VIP, and typically have higher stellar masses. Further, the VIP sit in dark matter haloes that are approximately 2.5 times as massive, in environments nearly 2 times as dense, and are almost a factor of 10 more affected by the tidal forces of their surroundings than the nonVIP. These factors conspire to increase the observability of tidal features and disturbed morphologies, making the VIP more likely to be identified. Thus, merger rate calculations which rely on stellar morphologies are likely to be significantly biased toward massive galaxy pairs which have recently undergone a close passage
Maniobrabilidad de buques: pruebas a escala real del Buque Patrullero de Apoyo Fluvial de la Armada de Colombia
Methodology and results of full scale maneuvering trials for Riverine Support Patrol Vessel “RSPV”, built by COTECMAR for the Colombian Navy are presented. This ship is equipped with a “Pump – Jet” propulsion system and the hull corresponds to a wide-hull with a high Beam – Draft ratio (B/T=9.5). Tests were based on the results of simulation of turning diameters obtained from TRIBON M3˝ design software, applying techniques of Design of Experiments “DOE”, to rationalize the number of runs in different conditions of water depth, ship speed, and rudder angle. Results validate the excellent performance of this class of ship and show that turning diameter and other maneuvering characteristics improve with decreasing water depth.En el presente trabajo se presenta la metodología y los resultados de las pruebas de maniobrabilidad a escala real del Buque Patrullero de Apoyo Fluvial Pesado “PAF-P”, construido por COTECMAR para la Armada Nacional de Colombia. El buque está equipado con un sistema de propulsión de bomba de agua tipo “Pump – Jet” y su casco corresponde a un casco con una relación Manga – Calado muy alta (B/T = 9.5). Las pruebas se basaron en los resultados de simulación de círculos evolutivos obtenidos en el software de Diseño TRIBON M3©, aplicando técnicas de Diseño de Experimentos “DOE”, para racionalizar el número de corridas en diferentes condiciones de profundidad, velocidad y ángulo de timón. Los resultados validan el excelente desempeño de esta clase de buques y muestran que el diámetro de giro y otras características de maniobrabilidad mejoran con la disminución de la profundidad
Implementation process of peace agreements. contributions from the new institutionalism
From the new institutionalism approach can be assumed that the implementation of instruments to ensure the agreements and strategies for peace building are highly complex, uncertain and difficult,in such a way that is necessary to build institution to ensure peace and long-term development,but also that will solve immediate problems. This article seeks to understand the processes of implementation of peace agreements,and how this type of operations and strategies can build and develop institutions.This involves conducting an understanding of the New Institutional and conceptual implications for understanding the processes of peace, and explores what theyare,how they are constructed, and how the institutions and the relationship between these and reconstruction processes.Desde el planteamiento nuevo institucionalista se puede asumir que la implementación de instrumentos para asegurar los acuerdos y las estrategias para construcción de la paz son sumamente complejos,inciertos y difíciles; ya que, se necesitan construir instituciones que aseguren la paz y el desarrollo a largo plazo, pero también que permitan la solución de problemas inmediatos. El presente artículo está orientado a entender los procesos de implementación de los acuerdos de paz; y,de qué manera este tipo de operaciones y estrategias pueden llegar a construir y desarrollar instituciones. Esto implica llevar a cabo un recorrido conceptual del Nuevo Institucionalismo y sus implicaciones para comprender los procesos de paz; y,explorar qué son, cómo se construyen, y cómo funcionan las instituciones y la relación que existe entre estas y los procesos de reconstrucción
Identification of a field isolate of Fasciola hepatica resistant to albendazole and susceptible to triclabendazole
The experiments described here were designed to characterize the status of susceptibility/resistance to albendazole (ABZ) and triclabendazole (TCBZ) of a Fasciola hepatica isolate (named CEDIVE isolate) recovered from infected sheep (Gualeguay, Argentina) and maintained under laboratory conditions. Two separate clinical efficacy experiments were performed on sheep artificially infected with the CEDIVE isolate. Experiment 1: Sheep were randomly distributed either in an untreated control group or an ABZ (7.5 mg/kg) treated group (n= 4 each). Additionally, the systemic exposure of ABZ metabolites was assessed in those ABZ-treated infected animals. In Experiment 2, an untreated control group and a TCBZ (10 mg/kg) treated group was included (n = 4 each). The fluckicidal efficacy of ABZ and TCBZ was assessed by comparison of the number of flukes recovered from untreated and treated sheep at 15 days post-treatment. The efficacy against the CEDIVE isolate of F. hepatica was 29% (ABZ) and 100% (TCBZ). The plasma drug exposure (expressed as AUC and Cmax) observed in the ABZ treated animals (Experiment 1), was in agreement with data obtained in previous studies, which indicate that the low ABZ efficacy was not related to the quality of the pharmaceutical product and/or to a low systemic availability of the active drug/metabolite. The results reported here, clearly show that the CEDIVE isolate of F. hepatica behaves as resistant to ABZ and susceptible to TCBZ.Facultad de Ciencias Veterinaria
Identification of a field isolate of Fasciola hepatica resistant to albendazole and susceptible to triclabendazole
The experiments described here were designed to characterize the status of susceptibility/resistance to albendazole (ABZ) and triclabendazole (TCBZ) of a Fasciola hepatica isolate (named CEDIVE isolate) recovered from infected sheep (Gualeguay, Argentina) and maintained under laboratory conditions. Two separate clinical efficacy experiments were performed on sheep artificially infected with the CEDIVE isolate. Experiment 1: Sheep were randomly distributed either in an untreated control group or an ABZ (7.5 mg/kg) treated group (n= 4 each). Additionally, the systemic exposure of ABZ metabolites was assessed in those ABZ-treated infected animals. In Experiment 2, an untreated control group and a TCBZ (10 mg/kg) treated group was included (n = 4 each). The fluckicidal efficacy of ABZ and TCBZ was assessed by comparison of the number of flukes recovered from untreated and treated sheep at 15 days post-treatment. The efficacy against the CEDIVE isolate of F. hepatica was 29% (ABZ) and 100% (TCBZ). The plasma drug exposure (expressed as AUC and Cmax) observed in the ABZ treated animals (Experiment 1), was in agreement with data obtained in previous studies, which indicate that the low ABZ efficacy was not related to the quality of the pharmaceutical product and/or to a low systemic availability of the active drug/metabolite. The results reported here, clearly show that the CEDIVE isolate of F. hepatica behaves as resistant to ABZ and susceptible to TCBZ.Facultad de Ciencias Veterinaria
- …