Analysis of motivational strategies in 11th grade students of English class at Amistad Quebec School in Teustepe, Boaco

This research was focused in the motivational strategies that influence 11th grade students of English language class at Amistad Quebec School. Three main factors were identified in the teaching -learning process of this grade. The factors are the following: intrinsic and extrinsic motivation, traditional motivation and language anxiety. Extrinsic motivation, which leads to negative motive, attitude, and discouragement in participants, teacher and students, extrinsic motivation overrides intrinsic motivation in that some students are expected to finish the scholastic year to find a job. Traditionally, students do not use English outside of the classroom because classes usually focus on repetitive strategies. Also, old tendencies contribute to low student achievement in general. Language anxiety, in which students feel afraid to use what they have learned in the classroom, contributes to low achievement of the target language. In this investigation, interviews and focal groups will be used to understand how strategies used by teachers affect student motivation. In general, this research considers the relationship between traditional and modern methods in the engagement of students in English class, the attitude of the teacher toward English, and the ways in which the teacher motivates his student

Eficiencia de implantación de trigo con labranza en franjas a distintas velocidades de avance

p.121-127En la implantación de cultivos en siembra directa, la compactación y la presencia de abundante rastrojo, dificultan el desempeño del tren de distribución de las sembradoras. En el presente trabajo se evaluó el comportamiento de una máquina intersembradora que posee rotoabridores que labran una franja de suelo, sobre la cual, los surcadores depositan la simente. La evaluación constituyó: el tratamiento a la semilla dosificada, a la uniformidad de distribución, la profundidad de siembra y la eficiencia de implantación de un cultivo de trigo a tres velocidades de avance. Los resultados mostraron disminución significativa en la semilla dosificada ante incrementos de velocidad, no se observó diferencia en la distribución de la semilla en el terreno, tendencia a una menor profundidad de siembra y significancia en la eficiencia de implantación a favor de la menor velocidad de avance. Se concluye que el desempeño de ésta sembradora sólo es comparable con las técnicas convencionales a la menor velocidad ensayada

La intervención comunitaria como herramienta en el desarrollo de pequeños negocios asociados del sector urbano-marginal del distrito de Cayma

El artículo forma parte del libro Perspectivas y paradigmas en psicología aplicada: Artículos seleccionados de la I Jornada de Investigación en Psicologí

Embryonic stem cell-derived hemangioblasts remain epigenetically plastic and require PRC1 to prevent neural gene expression.

Many lineage-specific developmental regulator genes are transcriptionally primed in embryonic stem (ES) cells; RNA Pol(II) is bound at their promoters but is prevented from productive elongation by the activity of polycomb repressive complexes (PRC) 1 and 2. This epigenetically poised state is thought to enable ES cells to rapidly execute multiple differentiation programs and is recognized by a simultaneous enrichment for trimethylation of lysine 4 and trimethylation of lysine 27 of histone H3 (bivalent chromatin) across promoter regions. Here we show that the chromatin profile of this important cohort of genes is progressively modified as ES cells differentiate toward blood-forming precursors. Surprisingly however, neural specifying genes, such as Nkx2-2, Nkx2-9, and Sox1, remain bivalent and primed even in committed hemangioblasts, as conditional deletion of PRC1 results in overt and inappropriate expression of neural genes in hemangioblasts. These data reinforce the importance of PRC1 for normal hematopoietic differentiation and reveal an unexpected epigenetic plasticity of mesoderm-committed hemangioblasts

Propuesta de atención a pacientes diabéticos utilizando un sistema de telemonitoreo

RESUMENEste artículo contiene los razonamientos y pautas para la implementación de una herramienta de comunicación móvil para el monitoreo y atención de pacientes con diabetes. También muestra en qué procesos el monitoreo a distancia facilita la atención y cuidado por parte del personal médico de una manera no presencial y así garantizar el mejor cuidado posible para los afectados por esta enfermedad.ABSTRACTThis article contains the thoughts and guidelines for the implementation of a mobile communication tool in monitoring and care of patients with diabetes. It also shows how the remote monitoring process provides the attention and care from medical personnel in a non-face and thus ensures the best possible care for those affected by this disease

Crystalline-to-plastic phase transitions in molecularly thin n-dotriacontane films adsorbed on solid surfaces

doi:10.1063/1.3213642Crystalline-to-rotator phase transitions have been widely studied in bulk hydrocarbons, in particular in normal alkanes. But few studies of these transitions deal with molecularly thin films of pure n-alkanes on solid substrates. In this work, we were able to grow dotriacontane (n-C32H66) films without coexisting bulk particles, which allows us to isolate the contribution to the ellipsometric signal from a monolayer of molecules oriented with their long axis perpendicular to the SiO2 surface. For these submonolayer films, we found a step in the ellipsometer signal at ~331 K, which we identify with a solid-solid phase transition. At higher coverages, we observed additional steps in the ellipsometric signal that we identify with a solid-solid phase transition in multilayer islands (~333 K) and with the transition to the rotator phase in bulk crystallites (~337 K), respectively. After considering three alternative explanations, we propose that the step upward in the ellipsometric signal observed at ~331 K on heating the submonolayer film is the signature of a transition from a perpendicular monolayer phase to a denser phase in which the alkane chains contain on average one to two gauche defects per molecule.This work was supported by the Chilean government through FONDECYT Grant Nos. 1060628 and 7080105 and by CONICYT scholarships (E.A.C., V.d.C. and P.A.S.), and by the U.S. NSF Grant No. DMR-0705974

Widespread Environmental Presence of Multidrug-Resistant Salmonella in an Equine Veterinary Hospital That Received Local and International Horses

Indexación: Scopus.Salmonella enterica is a highly infectious microorganism responsible for many outbreaks reported in equine hospitals. Outbreaks are characterized by high morbidity and mortality rates, nosocomial transmission to other patients, zoonotic transmission to hospital personnel, and even closure of facilities. In this study, 545 samples (environmental and hospitalized patients) were collected monthly during a 1-year period from human and animal contact surfaces in an equine hospital that received local and international horses. A total of 22 Salmonella isolates were obtained from human contact surfaces (e.g., offices and pharmacy) and animal contact surfaces (e.g., stalls, surgery room, and waterers), and one isolate from a horse. Molecular serotyping revealed 18 isolates as Salmonella Typhimurium and three as Salmonella Infantis. Nineteen isolates were resistant to at least one antimicrobial class, and only two isolates were susceptible to all antimicrobials tested. In addition, we identified nine multidrug-resistant (MDR) isolates in S. Typhimurium, which displayed resistance to up to eight antimicrobials (i.e., amoxicillin/clavulanate, ampicillin, ciprofloxacin, chloramphenicol, streptomycin, gentamicin, trimethoprim/sulfamethoxazole, and tetracycline). Pulsed-field gel electrophoresis (PFGE) revealed the presence of three PFGE patterns permanently present in the environment of the hospital during our study. The persistent environmental presence of MDR Salmonella isolates, along with the fact that local and international horses are attended in this hospital, highlights the importance of improving biosecurity programs to prevent disease in horses and the hospital personnel and also for the global dissemination and acquisition of MDR Salmonella. © Copyright © 2020 Soza-Ossandón, Rivera, Tardone, Riquelme-Neira, García, Hamilton-West, Adell, González-Rocha and Moreno-Switt.https://www.frontiersin.org/articles/10.3389/fvets.2020.00346/ful

Extended Interferon-Alpha Therapy Accelerates Telomere Length Loss in Human Peripheral Blood T Lymphocytes

BACKGROUND: Type I interferons have pleiotropic effects on host cells, including inhibiting telomerase in lymphocytes and antiviral activity. We tested the hypothesis that long-term interferon treatment would result in significant reduction in average telomere length in peripheral blood T lymphocytes. METHODS/PRINCIPAL FINDINGS: Using a flow cytometry-based telomere length assay on peripheral blood mononuclear cell samples from the Hepatitis-C Antiviral Long-term Treatment against Cirrhosis (HALT-C) study, we measured T cell telomere lengths at screening and at months 21 and 45 in 29 Hepatitis-C virus infected subjects. These subjects had failed to achieve a sustained virologic response following 24 weeks of pegylated-interferon-alpha plus ribavirin treatment and were subsequently randomized to either a no additional therapy group or a maintenance dose pegylated-IFNalpha group for an additional 3.5 years. Significant telomere loss in naive T cells occurred in the first 21 months in the interferon-alpha group. Telomere losses were similar in both groups during the final two years. Expansion of CD8(+)CD45RA(+)CD57(+) memory T cells and an inverse correlation of alanine aminotransferase levels with naive CD8(+) T cell telomere loss were observed in the control group but not in the interferon-alpha group. Telomere length at screening inversely correlated with Hepatitis-C viral load and body mass index. CONCLUSIONS/SIGNIFICANCE: Sustained interferon-alpha treatment increased telomere loss in naive T cells, and inhibited the accumulation of T cell memory expansions. The durability of this effect and consequences for immune senescence need to be defined