6,890 research outputs found
Evaluación del idioma inglés como competencia transversal en las asignaturas de matemáticas en la educación superior
Entre las competencias clave que la Unión Europea ha definido se encuentran la comunicación en lenguas extranjeras y la matemática. El conjunto de todas estas competencias clave representan una combinación de conocimientos, habilidades y actitudes consideradas necesarias para la realización y el desarrollo personal, la ciudadanía activa, la inclusión social y el empleo. La evaluación juega un papel decisivo en el diagnóstico de la calidad y la relevancia de las competencias adquiridas. El estándar internacional (MCER) que define la competencia lingüística y describe de forma integradora lo que tiene que conocer un estudiante de lengua extranjera con el fin de utilizarla para comunicarse, define los niveles de dominio de la lengua que permiten comprobar el avance del alumno en cada fase del aprendizaje y a lo largo de su vida. Sin embargo, no se ha diseñado un método de evaluación de la competencia de inglés como competencia transversal en las asignaturas de matemáticas en la educación superior, que permita medir la capacidad de los alumnos para aplicar sus conocimientos de la lengua inglesa de forma contextualizada. En este trabajo se analiza la competencia genérica de la lengua inglesa con fines académicos (IFA) y su evaluación. PALABRAS CLAVE: Evaluación, competencia genérica, IFA inglés con fines académicosPostprint (published version
Preface
pp. 52Preface of the Special Issue of Cybernetics and Physics Journal (CAP)is entitled “Control And Linear Algebra: Theory And Applications”. It collects highly selected papers which focus on both theoretical and practical system treatment by using time invariant linear systems. This special issue presents extended versions of relevant works presented in the invited minisymposium called “Control and Linear Algebra: Theory And Applications” held at 6th International Scientific Conference on Physics and Control (PhysCon 2013) on August, 26th–29th, 2013, which was organized by the University of San Luis de Potosí (México) and the International Physics and Control Society (IPACS).S
Decrease in Sperm Quality due to Infection of Human Papilloma Virus and Chlamydia trachomatis
Male infertility can have different causes, one of which may be the presence of etiologic
agents that cause sexually transmitted infections. Among the most important sexually
transmitted infections are human papillomavirus and Chlamydia trachomatis, which are as‐
sociated with infertility in females – whether they cause infertility in men is controversial.
The purpose of the chapter is to review the effect of these two pathogens on male fertility,
the evidence suggests that the most important infertility effect is linked to the condition
of the sperm. However, it is noteworthy that there are few studies with respect to infertil‐
ity in regard to both pathogens, so it is important to further research this to elucidate the
mechanisms by which these pathogens act on male infertility.UNIVERSIDAD AUTÓNOMA DEL ESTADO DE MÉXIC
Envolvimento da imunidade inata na infecção do Papilomavírus Humano
Innate immunity is the first defense in the host and is crucial to prevent Human Papillomavirus (HPV) infection and subse - quent development to neoplasia. HPV is involved in the squamous intraepithelial lesions and cervical cancer development. Fortunately, not everyone infected with HPV develop cervical cancer as the immune system can control the virus infection. Innate immunity is the first defense in the host and is crucial to prevent HPV infection and subsequent development to neoplasia. This type of immunity has different antiviral defense pathways, among which are: physical barriers (skin and mucous membranes), keratinocytes and immune cells such as Langerhans cells, dendritic cells, and natural killer cells, which may secrete interferons and cytokines that activate signaling cascades that may prevent HPV infection. However, HPV has also developed various strategies to evade this immune response, which could allow the squamous intraepithelial lesions and cervical cancer development. The aim of this review was to describe the innate immunity involvement in HPV infection
Radical scavenging activity of an inulin-gallic acid graft and its prebiotic effect on Lactobacillus acidophilus in vitro growth
Dietary fibre contained in some vegetable food products can be
associated with phenolic compounds and therefore exhibits a significant
antioxidant activity (Saura-Calixto, Pérez-Jiménez, &
Goñi, 2009). This kind of fibre is known as antioxidant dietary fibre
(ADF) and because of its polymer structure it could show a considerable
prebiotic capacity as well. Some studies have suggested that
polyphenols associated with this dietary fibre could be released in
the gastrointestinal tract during digestion (Mercado-Mercado
et al., 2015). Hence, besides its prebiotic activity ADF could
increase the radical scavenging activity of the human gut
environment.In order to generate a new antioxidant and prebiotic dietary fibre, gallic acid (GA) was grafted onto native
inulin. Inulin-gallic acid (IGA) graft was confirmed by UV and infrared spectroscopy (FT-IR). The antioxidant
activity was evaluated by spectroscopic methods and the prebiotic activity of IGA was determined
by In-Vitro growth of Lactobacillus acidophilus. UV spectra show absorbance peaks at 214 and 266–268 nm
showing aromatic ring presence in the IGA graft and FT-IR spectra showed a band at 1743 cm 1, confirming
the covalent bond between the polymer and GA. GA provides a significant antioxidant capacity to IGA
graft. Inulin shows a significant capacity to stimulate the growth of L. acidophilus and GA grafted onto inulin
(16.3 mg/g polymer) does not interfere with its prebiotic capacity. It is possible to provide radicalscavenging
capacity to inulin-type fructo-oligosaccharides avoiding the decrease of its prebiotic properties,
which could extend their potential use as functional foods.CONACYT 37057
Bispyrrolidinoindoline Epi(poly)thiodioxopiperazines (BPI-ETPs) and simplified mimetics: structural characterization, bioactivities, and total synthesis
Within the 2,5-dioxopiperazine-containing natural products generated by “head-to-tail” cyclization of peptides, those derived from tryptophan allow further structural diversification due to the rich chemical reactivity of the indole heterocycle, which can generate tetracyclic fragments of hexahydropyrrolo[2,3-b]indole or pyrrolidinoindoline skeleton fused to the 2,5-dioxopiperazine. Even more complex are the dimeric bispyrrolidinoindoline epi(poly)thiodioxopiperazines (BPI-ETPs), since they feature transannular (poly)sulfide bridges connecting C3 and C6 of their 2,5-dioxopiperazine rings. Homo- and heterodimers composed of diastereomeric epi(poly)thiodioxopiperazines increase the complexity of the family. Furthermore, putative biogenetically generated downstream metabolites with C11 and C11’-hydroxylated cores, as well as deoxygenated and/or oxidized side chain counterparts, have also been described. The isolation of these complex polycyclic tryptophan-derived alkaloids from the classical sources, their structural characterization, the description of the relevant biological activities and putative biogenetic routes, and the synthetic efforts to generate and confirm their structures and also to prepare and further evaluate structurally simple analogs will be reported.Xunta de Galicia | Ref. GRC ED431C 2021/045Ministerio de Economía | Ref. PID2019-107855RB-I00Xunta de Galicia | Ref. ED-431G/02-FEDE
Long-Term Effects Following Fresh/Vitrified Embryo Transfer Are Transmitted by Paternal Germline in a Large Size Rabbit Cohort
[EN] Simple Summary Assisted reproductive technologies (ARTs) involve an extraordinary change in the natural developmental trajectory of the mammalian embryo, incurring potential long-term and inheritable effects in the resulting offspring. The results of this study demonstrate, for the first time, that ex vivo embryo manipulations during fresh and vitrified embryo transfer are associated with paternally inherited bodyweight variation, but seemed not transmissible via the female germline. This asymmetry in the transmission of acquired features following ARTs suggests that embryo paternal and maternal genomes differ in their degree of susceptibility to the lasting effects of ARTs. This study would provide a novel view of developmental plasticity in the early mammalian embryo. The concept of developmental programming suggests that the early life environment influences offspring phenotype in later life, whose effects may also be manifested in further generations. Valuable pieces of evidence come from the fields applying assisted reproductive technologies (ARTs), which deprive embryos of their optimal maternal environment and were thus associated with subsequent developmental deviations. Recently, we demonstrated that the in vitro manipulations during a vitrified embryo transfer procedure incurs a cumulative and transgenerational decline in the growth performance of the resulting offspring. Here, we provide a longitudinal study to investigate whether previous developmental deviations could be indistinctly paternally or maternally transmitted using crossbred mattings. Our findings revealed that early embryo manipulations through fresh and vitrified embryo transfer incurred paternally transmissible effects over the growth pattern and adult body weight, which seemed not inheritable via the female germline. Similar inheritable effects were observed after fresh and vitrified embryo transfer, suggesting that disturbing optimal embryo development through in vitro manipulations was the principal trigger of transmissible effects, rather than embryo cryopreservation per se.This research was funded by Conselleria d'Educacio, Investigacio, Cultura i Esport (Generalitat Valenciana, Spain), grant number AICO/2019/272. X.G.-D. was supported by a research grant from the Spanish Ministry of Economy, Industry, and Competitiveness, grant number BES-2015-072429.Garcia-Dominguez, X.; Vicente Antón, JS.; Viudes-De-Castro, MP.; Marco-Jiménez, F. (2020). Long-Term Effects Following Fresh/Vitrified Embryo Transfer Are Transmitted by Paternal Germline in a Large Size Rabbit Cohort. Animals. 10(8):1-7. https://doi.org/10.3390/ani10081272S1710
Desafío tecnológico: herramienta para trabajar y evaluar las competencias básicas y generales en los estudios de grado de la E.T.S.I. de Telecomunicación
This work presents the evolution of the five editions of the educational activity named “Technological Challenge” specially focused on the students at “Escuela Técnica Superior de Ingeniería de Telecomunicación” (ETSIT), but open to all students of the “Universidad de Málaga” (UMA). This initiative has been developed in the context of the educational innovation project PIE17-021 funded by UMA. The “Technological Challenge” consists on the formulation of specific real problems, which students must face in a competitive regime. This activity allows the reinforcement and evaluation of basic and general competences reached by the graduate students in the ETSIT.
After nearly five years, this paper describes the evaluation of the results, regarding interest and participation of the students in the “Technology Challenge” along with the basic and general competences reached by the students.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
PIE17-02
Predation risk increases in estuarine bivalves stressed by low salinity
Financiado para publicación en acceso aberto: Universidade de Vigo/CISUGSalinity drops in estuaries after heavy rains are expected to increase in frequency and intensity over the next decades, with physiological and ecological consequences for the inhabitant organisms. It was investigated whether low salinity stress increases predation risk on three relevant commercial bivalves in Europe. In laboratory, juveniles of Venerupis corrugata, Cerastoderma edule, and the introduced Ruditapes philippinarum were subjected to low salinities (5, 10 and control 35) during two consecutive days and, afterwards, exposed to one of two common predators in the shellfish beds: the shore crab Carcinus maenas and the gastropod Bolinus brandaris, a non-indigenous species present in some Galician shellfish beds. Two types of choice experiment were done: one offering each predator one prey species previously exposed to one of the three salinities, and the other offering each predator the three prey species at the same time, previously exposed to one of the three salinities. Consumption of both predators and predatory behaviour of C. maenas (handling time, rejections, consumption rate) were measured. Predation rates and foraging behaviour differed, with B. brandaris being more generalist than C. maenas. Still, both predators consumed significantly more stressed (salinity 5 and 10) than non-stressed prey. The overall consumption of the native species C. edule and V. corrugata was greater than that of R. philippinarum, likely due to their vulnerability to low salinity and physical traits (e.g., thinner shell, valve gape). Increasing precipitations can alter salinity gradients in shellfish beds, and thus affect the population dynamics of harvested bivalves via predator–prey interactions.Ministerio de Economía y Competitividad | Ref. CTM2014-51935-RMinisterio de Economía y Competitividad | Ref. BES-2015-074211Xunta de Galicia | Ref. GRC2013-00
Submandibular puncture with injection needle in mice: comparison between two different procedures
La punción del plexo venoso a nivel submandibular en ratones es una técnica aceptada para la obtención de volúmenes de sangre adecuados para análisis de rutina. Si bien se recomienda el uso de lancetas comerciales, en Argentina no están disponibles, por lo tanto pueden sustituirse por agujas de inyección. El objetivo de este trabajo fue comparar el uso de agujas 21G x 1? utilizando dos procedimientos de punción submandibular en ratones BALB/c de 8 semanas deedad: G1) con capuchón cortado a 10 mm (restringiendo la profundidad de la punción) y G2) sin capuchón para determinar: a) volumen de sangre obtenido, b) datos hematológicos y glucemia y c) daño tisular. El volumen de sangre obtenido por la punción submandibular con aguja sin capuchón fue significativamente mayor que el colectado con capuchón. Los valores hematológicos y la glucemia fueron normales para ambos procedimientos. No se observaron daños histológicos en ninguno de los procedimientos empleados. En conclusión, se recomienda el uso de aguja como procedimiento de refinamiento para la obtención de sangre submandibular dado que es económico, práctico, permite obtener un volumen sanguíneo moderado sin provocar daño tisular y asegura la recuperación de los animales.The puncture of the venous plexus in the submandibular region in mice is an accepted technique to obtain blood volumes suitable for routine clinical analysis. Although the use of commercial lancets is recommended, in Argentina they are not available and they could be replaced by injection needles. The aim of this study was to compare the use of 21G x 1" needles using two different submandibular puncture procedures in 8-week-old BALB/c mice: G1) with cap cut to 10 mm (restricting the depth of the puncture) and, G2) without cap to determine: a) blood volume obtained, b) hematological data and glycaemia and c) tissue damage. The blood volume obtained by submandibular needle puncture without cap was significantly higher than the one collected with cap. Hematological values and glycaemia were normal for both procedures. No histological damage was observed in any of the procedures used. In conclusion, it is recommended the use of needle without cap as a refining procedure to collect submandibular blood since it is cheapest, practical, allows to obtain moderate volumes no causing tissue damage and ensuring the animal recovery.Fil: Fernandez, Vanesa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigación Veterinaria de Tandil. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigación Veterinaria de Tandil. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Centro de Investigación Veterinaria de Tandil; ArgentinaFil: Dominguez, Maria Paula. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigación Veterinaria de Tandil. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigación Veterinaria de Tandil. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Centro de Investigación Veterinaria de Tandil; ArgentinaFil: Garcia, Jorge P.. Universidad Nacional del Centro de la Provincia de Buenos Aires. Facultad de Ciencias Veterinarias. Departamento de Sanidad Animal y Medicina Preventiva. Laboratorio de Inmunoquímica y Biotecnología; ArgentinaFil: Estein, Silvia Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tandil. Centro de Investigación Veterinaria de Tandil. Universidad Nacional del Centro de la Provincia de Buenos Aires. Centro de Investigación Veterinaria de Tandil. Provincia de Buenos Aires. Gobernación. Comision de Investigaciones Científicas. Centro de Investigación Veterinaria de Tandil; Argentin
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