1,845 research outputs found
Lumbalgia desgarradora por rotura de aneurisma de aorta abdominal
Abdominal aortic aneurysms (AAA) are usually infrarenal, and they have a slow course. They do not produce obvious symptoms, a segmental dilatation of the infrarenal aorta with a diameter greater than or equal to 3 cm can be diagnosed as an abdominal aortic aneurysm. There are many causes that favor the appearance of this pathology which is historically associated with a high mortality rate that has not changed despite advances in surgical, anesthetic and intensive care management. We report the case of a 78-year-old male, hypertensive, smoker and with chronic low back pain treated as mechanical low back pain for weeks, who suffered a ruptured abdominal aortic aneurysm. He arrived at the emergency room with a tearing low back pain and high blood pressure. We initially thought it to be an aortic dissection, but the abdominal CT-ANGIO reported a ruptured aneurysm of the abdominal aorta. His evolution was torpid finishing in death due to irreversible hypovolemic shock hours after his arrival at the hospital.Los aneurismas de aorta abodminal (AAA) suelen ser infrarrenales y de curso evolutivo lento. No suelen producir síntomas evidentes, una dilatación segmentaria de la aorta infrarrenal con un diámetro mayor o igual a 3 cm establece su diagnóstico. Muchas son las causas que favorecen la aparición de dicha patología, que se asocia históricamente a un alto índice de mortalidad que no ha cambiado pese a los avances en el manejo quirúrgico, anestésico y de cuidados intensivos. Se expone aquí el caso de un varón de 78 años de edad, hipertenso, fumador y con lumbalgia crónica tratada como lumbalgia mecánica durante semanas que sufrió rotura de un aneurisma de aorta abdominal. Consultó en urgencias con un cuadro de lumbalgia desgarradora y cifras de tensión arterial elevadas, por lo que inicialmente se pensó en una disección aórtica, pero el ANGIO-TAC abdominal informó de la rotura de un aneurisma de aorta abdominal. Su evolución fue tórpida con fallecimiento por shock hipovolémico irreversible poco tiempo después de su llegada al hospital
Technocratic Attitudes in COVID-19 Times: Change and Preference Over Types of Experts
Western publics show a sizable support for experts’ involvement in political decision making, that is,
technocratic attitudes. This article analyzes two key aspects of these attitudes: technocratic attitudes’ stability and
the heterogeneity in the demand for experts depending on the context. We first analyze how technocratic attitudes
have been affected by an external event, the COVID-19 pandemic, that has placed experts’ role at the forefront of the
public debate; this allows us to analyze the stability or change in these attitudes. Second, given that the pandemic
quickly evolved from being a public health issue to becoming a political issue combining economic and public
health dimensions, we examine whether framing the COVID-19 pandemic exclusively as a public health problem or
as including a prominent economic dimension as well affects the type of public officials who are preferred to lead the
political management of the crisis (independent experts with diverse professional skills or party politicians belonging
to different parties and with a specialization in different policy fields). We pursue these two research goals through
a panel survey conducted in Spain at two different time points, one before and another during the pandemic, in
which we measure technocratic attitudes using an exhaustive battery; and through a survey experiment combining a
conjoint design and a framing experiment. Results show that, first, technocratic attitudes have significantly increased
as a consequence of the coronavirus outbreak; second, people’s preference for experts prevails against any other
experimental treatment such as party affiliation; and, finally, preferences for the type of experts vary depending on
the problem to be solved. In this way, this paper significantly increases our knowledge of the factors that affect
variation in public attitudes towards experts’ involvement in political decision-making.This research was supported by a grant from the Spanish Ministry of Economy, Industry and Competitiveness Program. Grant number: CSO2017-89847-P. Luis Ramiro benefited from a grant by the Fondation Maison des Sciences de l'Homme (France), Programme Directeurs d'Etudes Associés DEA 2020
Production of microbial transglutaminase on media made from sugar cane molasses and glycerol
Transglutaminase is an enzyme that catalyses an acyl transfer reaction between γ-carboxamide groups of glutaminyl residues and lysine residues in proteins. Due to this property, this enzyme is used for enhancing textural properties of protein-rich food. The transglutaminase used as food additive is obtained by microorganisms, mainly by Streptoverticillium ladakanum. On the other hand, sugar cane molasses is a viscous liquid rich in noncrystallized carbohydrates (saccharose, glucose and fructose). In this work, the feasibility of using sugar cane molasses as a carbon source for the production of microbial transglutaminase by Streptoverticillium ladakanum NRRL 3191 has been studied. Carbon sources including sugar cane molasses (60 g of total sugars per L), glycerol (60 g/L) and their mixture in a ratio of 1:1 (30 g/L of each) were evaluated. Time course of microbial growth, transglutaminase activity and carbon source consumption were determined every 24 h during 120 h of fermentations at three agitation speeds (200, 300 or 400 rpm). The results showed that with the increase in agitation speed, the biomass concentration increased up to 8.39 g/L in the medium containing sugar cane molasses alone or the mixture of molasses and glycerol. The highest transglutaminase activity was obtained at 400 rpm in the medium containing a mixture of molasses and glycerol, reaching 0.460 U/mL, while in the medium containing sugar cane molasses alone, the activity was 0.240 U/mL, and using glycerol alone it was 0.250 U/mL. These results show that sugar cane molasses is a suitable medium for transglutaminase production when it is combined with glycerolA grant from FOMIX CONACYT – Gobierno de Tamaulipas (Ref. 2004/1055) to author Portilla-Rivera is gratefully acknowledged. The authors are grateful to Ministerio de Educación y Ciencia (Spain) for the financial support of this work (Project: AGL2006-08250/ALI)S
An Evaluation of the Scarring Effect in Argentina
En este estudio se evalúa el efecto de corto plazo del tránsito por el desempleo sobre los salarios y la inserción laboral posterior. El llamado efecto scarring no ha sido estudiado previamente en América Latina y en específico en Argentina. Utilizando el esquema rotativo de la muestra de la Encuesta de Hogares se estima la magnitud de la penalidad salarial, y del incremento en la probabilidad de transitar hacia la informalidad, luego del paso por el desempleo. Se utilizan dos estrategias de estimación: por un lado, el modelo lineal para datos de panel con efectos fijos y aleatorios; por otro, el estimador de diferencias en diferencias con propensity score matching. Se muestra que el paso por el desempleo eleva en el corto plazo la probabilidad de alcanzar un puesto informal, pero que no es significativa su influencia sobre las remuneraciones, una vez que se controla por el tipo de ocupaciones.This study assesses the short-term effect of shifting from unemployment on wages and the subsequent employment. The so-called scarring effect has not been studied previously in Latin America and in particular in Argentina. Exploiting the rotational design of the household survey we estimate the size of the wage penalty, and the increase in the probability of entering informality, after being unemployed. Two estimation strategies are used. First, the linear model for panel data with fixed and random effects; second, the difference in difference estimator with propensity scores matching. We show that being unemployed raises the short run probability of becoming an informal worker, but its influence on wages -once controlling for the type of occupation- is not significant.Fil: Beccaria, Luis Alberto. Universidad Nacional de General Sarmiento; ArgentinaFil: Maurizio, Roxana del Luján. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Interdisciplinario de Economía Politica de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Económicas. Instituto Interdisciplinario de Economía Politica de Buenos Aires; Argentina. Universidad Nacional de General Sarmiento; ArgentinaFil: Trombetta, Martín. Universidad Nacional de General Sarmiento; ArgentinaFil: Vázquez, Gustavo Marcelo. Universidad Nacional de General Sarmiento; Argentin
On-site forest fire smoke detection by low-power autonomous vision sensor
Early detection plays a crucial role to prevent forest fires from spreading. Wireless vision sensor
networks deployed throughout high-risk areas can perform fine-grained surveillance and thereby
very early detection and precise location of forest fires. One of the fundamental requirements that
need to be met at the network nodes is reliable low-power on-site image processing. It greatly
simplifies the communication infrastructure of the network as only alarm signals instead of
complete images are transmitted, anticipating thus a very competitive cost. As a first
approximation to fulfill such a requirement, this paper reports the results achieved from field tests
carried out in collaboration with the Andalusian Fire-Fighting Service (INFOCA). Two controlled
burns of forest debris were realized (www.youtube.com/user/vmoteProject). Smoke was
successfully detected on-site by the EyeRISTM v1.2, a general-purpose autonomous vision system,
built by AnaFocus Ltd., in which a vision algorithm was programmed. No false alarm was
triggered despite the significant motion other than smoke present in the scene. Finally, as a further
step, we describe the preliminary laboratory results obtained from a prototype vision chip which
implements, at very low energy cost, some image processing primitives oriented to environmental
monitoring.Ministerio de Ciencia e Innovación 2006-TIC-2352, TEC2009-1181
The recent Spanish Migration in Germany and the United Kingdom: Migration Identities in question
Artículo realizado en el marco del proyecto de I+D+I de la modalidad Retos titulado “La
nueva emigración desde España: perfiles, estrategias de movilidad y activismo político
transnacional”. Financiado por el Ministerio de Economía, Industria y Competitividad
(MINECO). Referencia: CSO2016-80158-RReino Unido y Alemania son dos destinos de
la reciente emigración española que empezó
a crecer a partir del 2008. Los enfoques
para abordarla, tanto desde la investigación
como desde el plano político y mediático,
son diversos y no exentos de controversias:
emigración, exilio, jóvenes emprendedores,
etc. El objetivo de este artículo es conocer
cómo los propios protagonistas conciben su
proyecto migratorio, dentro de una diversidad
de perfiles y trayectorias heterogéneas que
los han llevado a partir hacia Europa. Este
estudio cualitativo llevado a cabo en Reino
Unido y Alemania proporciona una imagen
más nítida de la percepción de sus proyectos
y la influencia de la situación socioeconómica
en España en su toma de decisión migratoria.
Los resultados revelan tres tipos de percepciones
sobre la identidad migratoria, donde
un mayor activismo o sensibilidad políticosocial
juega un papel relevante, también en
su comparativa histórica con respecto a la
ola migratoria de 1960.The United Kingdom and Germany are two
destinations of the recent Spanish emigration
that began to grow in 2008. The approaches to
address it, both from the research and even
from the political and media angle or viewpoint,
are diverse and not without controversy:
emigration, exile, young entrepreneurs, etc.
The objective of this article is to understand
how the protagonists themselves conceive
their migration project, within a diversity of
profiles and very heterogeneous trajectories
that have led them to leave for Europe. This
qualitative study, carried out in the United
Kingdom and Germany, provides a clearer
picture of the perception of their projects and
the influence of the socioeconomic situation
in Spain on their migration decision-making.
Specifically, the results reveal three types of
perceptions about migratory identity, where
activism or greater political-social sensitivity
play a relevant role, and also an historical
comparison with respect to the emigration in
the 1960s.Ministerio de Economía, Industria y Competitividad
(MINECO) CSO2016-80158-
Programa de educación para la salud para adolescentes diabéticos tipo 1 recién debutados
La diabetes tipo 1 representa el 5% de los casos totales de diabetes, aparece generalmente en gente joven, antes de los 30 años; aunque se estima que su incidencia está aumentando y cada vez aparece a más temprana edad. Esta enfermedad presenta un gran impacto sociosanitario debido en gran parte a las complicaciones que produce. Esto, añadido a que se trata de una enfermedad crónica, hace que sea fundamental añadir cierto control sobre el estilo de vida de los pacientes. Por tanto, la educación sanitaria jugará el papel más importante en el desarrollo de esta enfermedad, poniendo al día al paciente en los conocimientos y habilidades necesarios para evitar todo tipo de complicaciones, haciéndole saber que puede llevar una vida normal que apenas se diferenciará de la de cualquier otra persona. Este trabajo consistirá en un programa de educación para la salud con adolescentes diabéticos recién debutados, con los que se trabajará en varias sesiones grupales en las que aprenderán el estilo de vida que se adapte a ellos y sea más adecuado a su situación clínica.<br /
On the Core-Halo Mass Relation in Scalar Field Dark Matter Models and its Consequences for the Formation of Supermassive Black Holes
Scalar-field dark matter (SFDM) halos exhibit a core-envelope structure with
soliton-like cores and CDM-like envelopes. Simulations without self-interaction
(free-field case) report a core-halo mass relation ,
with either or , which can be understood if core and
halo obey certain energy or velocity scalings. We extend the core-halo mass
relations to include SFDM with self-interaction (SI), either repulsive or
attractive, and investigate its implications for the gravitational instability
and collapse of solitonic cores, leading to supermassive black hole (SMBH)
formation. For SFDM parameters that make Kpc-sized cores and CDM-like
structure formation on large scales but suppressed on small scales, cores are
stable for all galactic halos of interest, from the free-field to the repulsive
SI limit. For attractive SI, however, halos masses have cores that collapse to SMBHs with , as observations seem to require, while smaller-mass halos have stable
cores, for particle masses , if the free-field has , or , if . For free-field and
repulsive cases, however, if previous constraints on particle parameters are
relaxed to allow much smaller (sub-galactic scale) cores, then halos can also
form SMBHs, for the same range of halo and BH masses, as long as
is correct for the free-field. In that case, structure formation in SFDM would
be largely indistinguishable from Cold Dark Matter (CDM). Such SFDM models
might not resolve the small-scale structure problems of CDM, but they would
explain the formation of SMBHs quite naturally. Since CDM, itself, has not yet
been ruled out, such SFDM models must also be viable (Abbreviated).Comment: 27 pages, 7 figures. Accepted by PR
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