235 research outputs found
Spanish validation of the Shorter Version of the Workplace Incivility Scale: An employment status invariant measure
Workplace Incivility (WI) occurs worldwide and has negative consequences on individuals and organizations. Valid and comprehensive instruments have been used, specifically in English speaking countries, to measure sucadverse process at work, but it is not available a validated instrument for research carried out in Spanish speaking countries. In this study we aim to test the psychometric properties of the Matthews and Ritter’s four-item Workplace Incivility Scale (2016) with Spanish workers (N = 407) from different sectors. Participants’ mean age was 38.73 (SD = 10.45) years old and the percentage of female employees was 59.2%. Confirmatory factor analysis using AMOS 19.0 was carried out, presenting a good fit. The internal consistency, convergent and concurrent validity of the scale were examined. Results show good scale reliability and expected high correlations with social undermining. Moreover, the scale related to propensity to leave a job, job satisfaction, and psychological well-being in the expected way. After configural invariance across groups was established, testing for metric invariance and scalar invariance was performed. Considering Δχ2 and ΔCFI tests for two nested models, the 4-item scale was invariant when the employment status is considered (permanent vs. temporal, full-time vs. part-time, and supervisor vs. non-supervisors). Overall, our findings showed good psychometric properties of the shorter version of the WIS in Spain. Theoretical and practical implications of this study are discussed.Ministerio de Economía y Competitividad de España PSI2015-64894-PFundação para a Ciência e a Tecnologia (FCT) Portugal SFRH/BPD/121748/201
Culturas urbanas. Los black metaleros en Quito. Concepciones de la familia y de la sexualidad
En el momento en que se activa la discusión del concepto de lo juvenil y de observar las
representaciones e imaginarios que acompañan a este grupo etareo de la sociedad
contemporánea, empiezan a aparecer nuevas nociones sobre las diferentes
autoidentificaciones que circundan a los jóvenes. En este sentido se puede entender que los
jóvenes son parte de un grupo social especial, sobre el cual recaen unos privilegios
económicos de tiempo y de edad, de ahí que generalmente, el joven se distingue porque en
cierta forma no se ha independizado de su familia nuclear, factor que ha facilitado para ser
parte de nuevas formas del consumo en las industrial culturales y de construcciones de
identidad a partir del consumo musical.
Desde el relacionamiento del joven con el consumo de artefactos culturales, se pueden
entender las construcciones identitarias que establece bajo parámetros muy específicos, de
ahí que la cultura juvenil nos lleva a entender las identidades musicales que circundan en la
sociedad juvenil contemporánea, identidades que parten desde el Rap, el Hip – Hop, el
Reggae hasta el Rock, el Metal y el Black Metal. Este último segmento identitario de las
culturas juveniles llama la atención porque aparenta ser una construcción que contiene unos
valores sociales nuevos, puesto que la música (Black Metal) que guía dicha identidad tiene
el propósito de romper los estereotipos sociales, religiosos, morales y políticos.
Al establecerse el Black Metal como una cultura juvenil con un alto consumo en la ciudad
de Quito nos encontramos con que los jóvenes pertenecientes a esta cultura tienen una
concepción de familia que deviene de una construcción tradicional de la sociedad, pero que
a su vez ellos reinterpretan y se rea-propian de esta forma de ser y estar en el mundo; de ahí
que la noción de familia al interior del Black Metal no se construye como una entidad que
es contraria a la concepción tradicional, por el contrario contiene parámetros monógamos
heterosexuales. Se advierte además que se reformulan las prácticas de la sexualidad y la
importancia que se le da a las mismas en la concepción de la construcción de una familia
propia que se intenta sea adaptativa y que no reprima la construcción identitaria de los
futuros hijos
Tolerance to geometrical inaccuracies in CBCT systems:a comprehensive study
Purpose: The last decades have seen the consolidation of the cone-beam CT (CBCT) technology, which is nowadays widely used for different applications such as micro-CT for small animals, mammography, dentistry, or surgical procedures. Some CBCT systems may suffer mechanical strains due to the heavy load of the x-ray tube. This fact, together with tolerances in the manufacturing process, lead to different types of undesirable effects in the reconstructed image unless they are properly accounted for during the reconstruction. To obtain good quality images, it is necessary to have a complete characterization of the system geometry including the angular position of the gantry, the source-object and detector-object distances, and the position and pose of the detector. These parameters can be obtained through a calibration process done periodically, depending on the stability of the system geometry. To the best of our knowledge, there are no comprehensive works studying the effect of inaccuracies in the geometrical calibration of CBCT systems in a systematic and quantitative way. In this work, we describe the effects of detector misalignments (linear shifts, rotation, and inclinations) on the image and define their tolerance as the maximum error that keeps the image free from artifacts.
Methods: We used simulations of four phantoms including systematic and random misalignments. Reconstructions of these data with and without errors were compared to identify the artifacts introduced in the reconstructed image and the tolerance to miscalibration deemed to provide acceptable image quality.
Results: Visual assessment provided an easy guideline to identify the sources of error by visual inspection of the artifactual images. Systematic errors result in blurring, shape distortion and/or reduction of the axial field of view while random errors produce streaks and blurring in all cases, with a tolerance which is more than twice that of systematic errors. The tolerance corresponding to errors in position of the detector along the tangential direction, that is, skew (<0.2°) and horizontal shift (<0.4 mm), is tighter than the tolerance to those errors affecting the position along the longitudinal direction or the magnification, that is, vertical shift (<2 mm), roll (<1.5°), tilt (<2°), and SDD (<3 mm).
Conclusion: We present a comprehensive study, based on realistic simulations, of the effects on the reconstructed image quality of errors in the geometrical characterization of a CBCT system and define their tolerance. These results could be used to guide the design of new systems, establishing the mechanical precision that must be achieved, and to help in the definition of an optimal geometrical calibration process. Also, the thorough visual assessment may be valuable to identify the most predominant sources of error based on the effects shown in the reconstructed image.This work has been supported by Ministerio de Ciencia, Innovación y Universidades, Agencia Estatal de Investigación, project “DPI2016-79075-R - AEI/FEDER, UE”, Instituto de Salud Carlos III, project “DTS17/00122”, cofunded by European Regional Development Fund (ERDF), “A way of making Europe”. Also partially funded by project “DEEPCT-CM-UC3M,” funded by the call "Programa de apoyo a la realización de proyectos interdisciplinares de I+D para jóvenes investigadores de la Universidad Carlos III de Madrid 2019-2020 en el marco del Convenio Plurianual Comunidad de Madrid - Universidad Carlos III de Madrid” and project “RADCOV19,” funded by CRUE Universidades, CSIC and Banco Santander (Fondo Supera). The CNIC is supported by the Ministerio de Ciencia, Innovación y Universidades and the Pro CNIC Foundation, and is a Severo Ochoa Center of Excellence (SEV-2015 -0505
Fusarium graminearum presence in wheat samples for human consumption
La fusariosis es una de las enfermedades más importantes de los cereales, Fusarium graminearum es su principal agente etiológico. Este hongo posee la capacidad de producir distintos tipos y niveles de toxinas, en especial deoxinivalenol (DON). En la campaña 2012-2013 se dieron condiciones ambientales predisponentes para el desarrollo de esta enfermedad. El objetivo de este trabajo fue evaluar la presencia del hongo y el contenido de DON en 50 muestras de trigo. Los resultados demostraron la presencia de Fusarium graminearum en el 80 % de las muestras analizadas. El 24 % de las muestras presentó valores de DON ≥ 1μg/g, el 26 % varió entre 0,5 y 0,99μg/g, mientras que el 50 % restante mostró valores inferiores a 0,5μg/g. Se observó correlación entre la presencia de Fusarium graminearum y de DON. Es necesario establecer valores límites de DON en granos de trigo destinados al consumo humano.One of the most important diseases in cereal crops is Fusarium head blight, being Fusarium graminearum the main etiological agent. This fungus has the ability to produce a wide spectrum and quantity of toxins, especially deoxynivalenol (DON). During the last crop season (2012-2013) the climatic conditions favored Fusarium colonization. The objective of this work was to determine the presence of this fungus as well as the DON content in 50 wheat grain samples. Our results showed that 80% of the samples were contaminated with Fusarium graminearum. Twenty four percent (24%) of the samples contained ≥ 1μg/g DON, 26% ranged from 0,5 and 0,99μg/g, and the remaining 50% had values lower than 0,5μg/g. Correlation was found between the presence of Fusarium graminearum and DON. It is necessary to establish DON limit values in wheat grains for human consumption.Fil: Martínez, Mauro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; ArgentinaFil: Castañares, Eliana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; ArgentinaFil: Dinolfo, María Inés. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; ArgentinaFil: Pacheco, Walter Germán. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; ArgentinaFil: Moreno, Maria Virginia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina. Facultad de Agronomía de Azul. Azul; ArgentinaFil: Stenglein, Sebastian Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Cientifico Tecnolológico Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología. Laboratorio de Biología Funcional y Biotecnología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina. Facultad de Agronomía de Azul. Azul; Argentin
Guía de la Cooperación Española para la incorporación de las TIC en las intervenciones de Salud en la Cooperación para el Desarrollo
El objetivo de esta guía es aportar herramientas y ejemplos reales para lograr aprovechar el potencial que ofrecen las nuevas tecnologías para fortalecer los sistemas de salud de los países socios, línea prioritaria de la cooperación española dentro de la estrategia de salud
Guía de la Cooperación Española para la incorporación de las TIC en las intervenciones de Salud en la Cooperación para el Desarrollo
El objetivo de esta guía es aportar herramientas y ejemplos reales para lograr aprovechar el potencial que ofrecen las nuevas tecnologías para fortalecer los sistemas de salud de los países socios, línea prioritaria de la cooperación española dentro de la estrategia de salud
Manejo de la hipotensión inducida por anestesia espinal para cesárea
La hipotensión inducida por la anestesia espinal en pacientes embarazadas que van a ser sometidas a cesárea,
es el efecto adverso más frequente de esta técnica anestésica y está relacionada con efectos adversos
maternos y fetales. Este documento es una revisión descriptiva que destaca la frecuencia, la fisiopatología,
la importancia clínica, la definición y el tratamiento profiláctico y terapéutico de esta condición.
Los anestesiólogos que se dedican al cuidado de pacientes maternas deben conocer la importancia, implicaciones
y aproximación terapéutica de la hipotensión materna, que puede terminar en morbilidad y mortalidad
del binomio materno-fetal.Q3131-140Spinal anaesthesia-induced hypotension in pregnant patients undergoing caesarean section is this anaesthetic
technique’s most common
side-effect and is associated with adverse maternal and foetal outcomes.
This document provides a descriptive review highlighting this condition’s frequency, pathophysiology, clinical
importance, definition, prophylactic and therapeutic treatment.
Anaesthesiologists involved in maternity care should be aware of the significance, implications and therapeutic
approach to hypotension which may result in maternal-foetal pair morbidity and mortality
TCFL5 deficiency impairs the pachytene to diplotene transition during spermatogenesis in the mouse
Spermatogenesis is a complex, multistep process during which spermatogonia give rise to spermatozoa. Transcription Factor Like 5 (TCFL5) is a transcription factor that has been described expressed during spermatogenesis. In order to decipher the role of TCFL5 during in vivo spermatogenesis, we generated two mouse models. Ubiquitous removal of TCFL5 generated by breeding TCFL5fl/fl with SOX2-Cre mice resulted in sterile males being unable to produce spermatozoa due to a dramatic alteration of the testis architecture presenting meiosis arrest and lack of spermatids. SYCP3, SYCP1 and H1T expression analysis showed that TCFL5 deficiency causes alterations during pachytene/diplotene transition resulting in a meiotic arrest in a diplotene-like stage. Even more, TCFL5 deficient pachytene showed alterations in the number of MLH1 foci and the condensation of the sexual body. In addition, tamoxifen-inducible TCFL5 knockout mice showed, besides meiosis phenotype, alterations in the spermatids elongation process resulting in aberrant spermatids. Furthermore, TCFL5 deficiency increased spermatogonia maintenance genes (Dalz, Sox2, and Dmrt1) but also increased meiosis genes (Syce1, Stag3, and Morc2a) suggesting that the synaptonemal complex forms well, but cannot separate and meiosis does not proceed. TCFL5 is able to bind to the promoter of Syce1, Stag3, Dmrt1, and Syce1 suggesting a direct control of their expression. In conclusion, TCFL5 plays an essential role in spermatogenesis progression being indispensable for meiosis resolution and spermatids maturatio
Mitofusins modulate the increase in mitochondrial length, bioenergetics and secretory phenotype in therapy-induced senescent melanoma cells
Cellular senescence is an endpoint of chemotherapy, and targeted therapies in melanoma and the senescence-associated secretory phenotype (SASP) can affect tumor
growth and microenvironment, influencing treatment outcomes. Metabolic interventions
can modulate the SASP, and an enhanced mitochondrial energy metabolism supports
resistance to therapy in melanoma cells. Herein, we assessed the mitochondrial function
of therapy-induced senescent melanoma cells obtained after exposing the cells to temozolomide (TMZ), a methylating chemotherapeutic agent. Senescence induction in melanoma was accompanied by a substantial increase in mitochondrial basal, ATP-linked, and
maximum respiration rates and in coupling efficiency, spare respiratory capacity, and
respiratory control ratio. Further examinations revealed an increase in mitochondrial mass
and length. Alterations in mitochondrial function and morphology were confirmed in isolated senescent cells, obtained by cell-size sorting. An increase in mitofusin 1 and 2
(MFN1 and 2) expression and levels was observed in senescent cells, pointing to alterations in mitochondrial fusion. Silencing mitofusin expression with short hairpin RNA
(shRNA) prevented the increase in mitochondrial length, oxygen consumption rate and
secretion of interleukin 6 (IL-6), a component of the SASP, in melanoma senescent cells.
Our results represent the first in-depth study of mitochondrial function in therapy-induced
senescence in melanoma. They indicate that senescence increases mitochondrial mass,
length and energy metabolism; and highlight mitochondria as potential pharmacological
targets to modulate senescence and the SASP.Agencia Nacional de Investigación e Innovación FCE_1_2017_1_13602
Fruit and vegetable consumption is inversely associated with plasma saturated fatty acids at baseline in PREDIMED plus trial
Scope: Plasma fatty acids (FAs) are associated with the development of cardiovascular diseases and metabolic syndrome.
The aim of our study is to assess the relationship between fruit and vegetable (F&V) consumption and plasma FAs and
their subtypes.
Methods and Results: Plasma FAs are assessed in a cross-sectional analysis of a subsample of 240 subjects from the
PREDIMED-Plus study. Participants are categorized into four groups of fruit, vegetable, and fat intake according to the
food frequency questionnaire. Plasma FA analysis is performed using gas chromatography. Associations between FAs
and F&V consumption are adjusted for age, sex, physical activity, body mass index (BMI), total energy intake, and alcohol
consumption. Plasma saturated FAs are lower in groups with high F&V consumption (-1.20 mg cL−1 [95% CI: [-2.22, -
0.18], p-value = 0.021), especially when fat intake is high (-1.74 mg cL−1 [95% CI: [-3.41, -0.06], p-value = 0.042). Total
FAs and n-6 polyunsaturated FAs tend to be lower in high consumers of F&V only in the high-fat intake groups.
Conclusions: F&V consumption is associated with lower plasma saturated FAs when fat intake is high. These findings
suggest that F&V consumption may have different associations with plasma FAs depending on their subtype and on the
extent of fat intake
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