950 research outputs found

    Physiological Study of the Efficacy of Archer® Eclipse in the Protection against Sunburn in Cucumber Plants

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    Sunburn is an important issue affecting the yield of many crops, mainly in arid and semi-arid regions. Excessive solar radiation and high temperatures can reduce growth and cause leaf chlorosis, oxidative stress, and photosynthesis impairment. It is thus necessary to develop agricultural techniques to protect plants in a cost-effective and reproducible manner. A potential method is through the spray of protective compounds based on particulate films, such as those based on kaolin. The objective of this study is to evaluate the effects of spraying the protective product Archer((R)) Eclipse, created by Atlantica Agricola S.A. (Alicante, Spain), on sunburn damage in a sensitive species such as the cucumber plants (Cucumis sativus L.). To evaluate the effects of sunburn on the plants, parameters related to biomass, leaf temperature, photosynthesis, and oxidative stress were analysed. Plants sprayed with Archer((R)) Eclipse showed fewer sunburn symptoms and obtained 43% more shoot biomass than those that were not treated. In addition, plants sprayed with Archer((R)) Eclipse showed 3 degrees C lower leaf temperatures, higher photosynthesis performance, 88% more water use efficiency, and 21% more chlorophyll concentration. Finally, plants treated with Archer((R)) Eclipse presented 6% less accumulations of carotenoids and 67% less total phenols, but lower oxidative stress indicators. In conclusion, this study confirms the efficiency of Archer((R)) Eclipse in protecting a sensitive vegetable plant such as the cucumber from sunburn-inducing conditions.PAI programme (Plan Andaluz de Investigacion, Grupo de Investigacion) AGR28

    Gamification and Breakout Edu in Professional Training. «Grey Place» program in Social Integration

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    La gamificación educativa es el uso de dinámicas y mecánicas propias de los juegos al ámbito educativo, con el objetivo de aumentar la motivación escolar del alumnado. Desde la presente aportación se presenta el diseño e implementación de una unidad de trabajo gamificada en Formación Profesional durante el curso 2018/2019 para la asignatura de Apoyo a la Intervención Educativa del Ciclo Formativo de Grado Superior en Integración Social. Se plantea un proceso de enseñanza-aprendizaje cooperativo a través de un proyecto gamificado centrado en la identificación y creación de recursos educativos para alumnado con diversidad funcional. Se concluye que el uso de estrategias gamificadas pueden ser motivadoras para el alumnado y beneficiosas para su aprendizaje.Educational gamification is the use of dynamics and mechanics propers of the games to educational sphere, with the aim to increase the scholastic motivation of students. From the present contribution, is presented the design and implementation of a work-gamificated unit in Vocational Training during the academic year 2018/2019 for the "Supporting to educational intervention" subject of Higher-Level Training Cycle on Social Integration. It states a cooperative teaching - learning process through of a gamification project focuses in identification and creation of educational resources for student body with functional diversity. It is concluded that use of gamification strategies may be motivating for student body and beneficial for their learning

    Analysis of RAZORMIN® as a Biostimulant and Its Effect on the Phytotoxicity Mitigation Caused by Fungicide Azoxystrobin in Pepper

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    Use of biostimulants for stimulating plant growth and mitigating the negative impacts of biotic and abiotic stresses is a promising strategy to achieve higher crop yields. Fungicides such as azoxystrobin are used to control several pests and fungal diseases in plants but at the cost of altering various physiological processes; thereby, leading to reduced crop yields. The efficiency of the compound RAZORMIN® as a biostimulant product while taking into account its role in plant growth stimulation and fungicide azoxystrobin stress mitigation was evaluated in this study. The efficacy of RAZORMIN® was assessed considering its impact on the stimulation of growthrelated physiological processes and stress mitigation mechanism, e.g., reactive oxygen species (ROS) detoxification. Application of RAZORMIN® significantly increased plant growth by improving fresh weight, photosynthetic efficiency, net photosynthesis rate, gas exchange, nitrogen (N) metabolism (with increases in soluble amino acids, foliar N concentration, and N use efficiency), growth hormone concentrations (mainly gibberellins and cytokinins), nutritional status of plants (producing a greater accumulation of phosphorus, potassium, calcium, magnesium, sulfur, zinc, molybdenum, iron, and boron), and sugars concentration. Furthermore, the application of RAZORMIN® on plants under fungicide azoxystrobin stress demonstrated its anti-stress and protective role by stimulating the antioxidant defense system and improving photosynthetic efficiencyPAI program (Plan Andaluz de Investigacion, Grupo de Investigacion) AGR28

    Walking among Mammoths. Remote Sensing and Virtual Reality Supporting the Study and Dissemination of Pleistocene Archaeological Sites: The Case of Fuente Nueva 3 in Orce, Spain

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    D.B. and S.T. are grateful for support from the Spanish government Ministerio de Ciencia, Innovación y Universidades (MICINN-FEDER) code CGL2016-80975-P, Agència de Gestió d’Ajuts Universitaris i de Recerca (AGAUR) code 2017 SGR 859 and CERCA Programme/Generalitat de Catalunya. S.T. is also beneficiary of the Provincia Autonoma di Bolzano (Italy). J.M.J.-A. belongs to the Research Group HUM-607, Junta de Andalucía. The authors would like to thank the editor of this volume and the reviewers for their useful and accurate comments, which have undoubtedly improved previous versions of this paper.Remote sensing is a useful tool for the documentation of archaeological sites. The products derived from a photogrammetric project applied to archaeology such as orthophotos and three-dimensional virtual reconstruction (3DVR), allow for detailed study of the Fuente Nueva 3 site in Orce. In our study of the Fuente Nueva 3 site in Orce, we used 3DVR intensively to map out the morphometric features of mammoth tusks exposed on the surface and a geological fault affecting the site’s deposits. To do so, we used imagery captured since 2017 in order to follow the evolution of ongoing excavations during each subsequent field season. We also integrated the 3DVR model in a videogame environment, to create a virtual reality (VR) that allows a VR navigation experience around the scenario using a head mounted display like Oculus Rift. The main features of this VR experience are: (1) It is ideal for the diffusion of archaeological contents since it permits an attractive presentation mode thanks to stereo visualization and realistic immersion sensations; (2) it provides a high level of detail all along the navigation experience, without incurring any damage to the archaeological remains; (3) it allows users to observe more details than they would in an in situ visit to the site; (4) it makes it possible to convert an archaeological site into portable heritage, opening up the possibility to extend visits to vulnerable groups: specifically those with reduced mobility. Our results show that using VR should permit enhancements to a visitor’s experience and contribute to the socio-economic development of the town of Orce, one of the Spanish municipalities with the lowest income.Junta de Andalucia BC.03.032/17FEDER 2010 Operative Program Research Project A-HUM-016-UGR1

    Plasma ACE2 species are differentially altered in COVID-19 patients

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    Studies are needed to identify useful biomarkers to assess the severity and prognosis of COVID-19 disease, caused by severe acute respiratory syndrome coronavirus (SARS-CoV-2) virus. Here, we examine the levels of various plasma species of the SARS-CoV-2 host receptor, the angiotensin-converting enzyme 2 (ACE2), in patients at different phases of the infection. Human plasma ACE2 species were characterized by immunoprecipitation and western blotting employing antibodies against the ectodomain and the C-terminal domain, using a recombinant human ACE2 protein as control. In addition, changes in the cleaved and full-length ACE2 species were also examined in serum samples derived from humanized K18-hACE2 mice challenged with a lethal dose of SARS-CoV-2. ACE2 immunoreactivity was present in human plasma as several molecular mass species that probably comprise truncated (70 and 75 kDa) and full-length forms (95, 100, 130, and 170 kDa). COVID-19 patients in the acute phase of infection (n = 46) had significantly decreased levels of ACE2 full-length species, while a truncated 70-kDa form was marginally higher compared with non-disease controls (n = 26). Levels of ACE2 full-length species were in the normal range in patients after a recovery period with an interval of 58-70 days (n = 29), while the 70-kDa species decreased. Levels of the truncated ACE2 species served to discriminate between individuals infected by SARS-CoV-2 and those infected with influenza A virus (n = 17). In conclusion, specific plasma ACE2 species are altered in patients with COVID-19 and these changes normalize during the recovery phase. Alterations in ACE2 species following SARS-CoV-2 infection warrant further investigation regarding their potential usefulness as biomarkers for the disease process and to asses efficacy during vaccination

    Alojamientos protegidos para enfermos mentales crónicos 1: Perfil epidemiológico, síntomas, calidad de vida y autoestima en dos muestras de sujetos

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    En este estudio se comparan los síntomas psicopatológicos, la calidad de vida y la autoestima de dos muestras de pacientes mentales crónicos, unos que residen en 2 alojamientos protegidos y otros en espera de hacerlo. También se precisa el perfil epidemiológico de los pacientes. Este tipo de alojamientos se presentan desde hace algunas décadas como la alternativa a los hospitales psiquiátricos tradicionales, que funcionaban en la práctica como recursos residenciales. Su utilidad ha sido considerada desde diferentes puntos de vista, a nivel clínico, asistencial, funcional y económico. A diferencia de otros hallazgos, en nuestro estudio no se aprecia una mejor calidad de vida de los pacientes que viven en dichos alojamientos frente a los que no lo hacen. Tampoco están mejor psicopatológicamente ni tienen mayor autoestima. Se sugieren modificaciones metodológicas en el diseño que permitan controlar ciertas variables que pueden influir en los resultados.In this study the psychopathology symptoms, the quality of life and the selfesteem of two samples of patient mental chronic are compared, some housed in protected lodgings and others while waiting for making it. It is also described the epidemic profile of the patients. This type of lodgings is presented for some decades like the alternative to the traditional psychiatric hospitals that worked in the practice as residential resources. Their utility has been considered from different points of view, at clinical, assistance, functional and economic level. Contrary to other discoveries, in our study a better quality of the patients' life is not appreciated that live in this lodgings in front of those that don't make it. Neither they are better psychopathologically neither they have bigger self-esteem. Methodological modifications are suggested in the design to control certain variables that can influence in the results

    Comportamiento epidemiológico de los factores de riesgo asociados a enfermedades crónicas no transmisibles en estudiantes universitarios

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    Describir el comportamiento epidemiológico de los factores de riesgo relacionados a enfermedades crónicas no transmisibles asociados a hipertrigliceridemia presentes en los estudiantes del primer año de la carrera de Médico y Cirujano de la Universidad de San Carlos de Guatemala. Estudio descriptivo transversal realizado en 1097 estudiantes, en los cuales se aplicó el cuestionario del método paso a paso para la vigilancia de factores de riesgo de enfermedades crónicas (STEPS) modificado. Se encontró 610 (56%) estudiantes sexo femenino, la media de edad fue de 19 años (±1.56); en relación a los factores de riesgo modificables: 219 (20%) consumen cigarrillo, 274 (25%) consumen alcohol nocivamente, 838 (76%) se alimentan de forma inadecuada, 887 (81%) no practica actividad física significativa; se identificó que 405 (37%) presentaron un índice cintura – cadera considerado de riesgo. En cuanto a los factores asociados a la presencia de hipertrigliceridemia: obesidad se identificó en 147 (13%) estudiantes (X2 de 104.98 y OR de 7), obesidad central en 204 (19%) (X2 de 55.74 y OR de 3), el sobrepeso en 330 (30%) (X2 de 53.4727 y OR de 3), presión arterial alta en 397 (36%) (X2 de 18.63 y OR de 2), y glucemia alterada en ayunas alta en 198 (18%) (X2 de 8.3 y OR de 2). La hipertrigliceridemia se presentó en 411 estudiantes (37%), siendo la edad más afectada la de 19 años. La mayoría de estudiantes estudiados es de sexo femenino. Existe una alta prevalencia de factores de riesgo modificables asociados a enfermedades crónicas no transmisibles, de estos se identificó que factores como obesidad, obesidad central, sobrepeso, presión arterial alta y glucemia alterada en ayunas alta tienen una significativa asociación al desarrollo de hipertrigliceridemia, con un aumento del riesgo de 7, 3, 3, 2 y 2, respectivamente

    Between Level Up and Game Over: A Systematic Literature Review of Gamification in Education

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    Educational gamification consists of the use of game elements and game design techniques in the educational context. The objective of this study is to examine the existing evidence on the impact of educational gamification on student motivation and academic performance in the last five years in order to analyze its distribution over time, educational level, variables, and most used game elements, and know the advantages of its implementation in the classroom. For this, a systematic review is proposed through the Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) methodology in three multidisciplinary databases, through an exhaustive search with inclusion and exclusion criteria on quantitative experimental studies that explore gamification in educational centers, which provide information about the most current lines of research. Fourteen studies were included in this review. These used experimental or quasi-experimental designs. Most of them report gamification as a valid learning strategy. The results support the conclusion that educational gamification has a potential impact on the academic performance, commitment, and motivation of students. Therefore, this study implies the need to expand research on the needs and challenges of students when learning with gamified techniques

    The Influence of the Scout Movement as a Free Time Option on Improving Academic Performance, Self-Esteem and Social Skills in Adolescents

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    The word scouting refers to the Scout movement, born more than a hundred years ago, which educates millions of young people between the ages of six and twenty-one in their leisure time. We aimed to study the effects of scouting on the academic results, social skills, and self-esteem of high school youths compared to a non-scout sample. The selected sample consisted of 430 secondary students aged between thirteen and seventeen. Self-esteem and social skills were measured, and the average mark of the total sample was analysed. After the study, it was shown that belonging to the scout movement significantly influences the improvement of academic results in formal education and conflict resolution; however, there are no statistically significant differences in self-esteem and other social skills

    Transient changes in the plasma of astrocytic and neuronal injury biomarkers in COVID-19 patients without neurological syndromes

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    This article belongs to the Special Issue Latest Advances in Neuroscience.The levels of several glial and neuronal plasma biomarkers have been found to increase during the acute phase in COVID-19 patients with neurological symptoms. However, replications in patients with minor or non-neurological symptoms are needed to understand their potential as indicators of CNS injury or vulnerability. Plasma levels of glial fibrillary acidic protein (GFAP), neurofilament light chain protein (NfL), and total Tau (T-tau) were determined by Single molecule array (Simoa) immunoassays in 45 samples from COVID-19 patients in the acute phase of infection [moderate (n = 35), or severe (n = 10)] with minor or non-neurological symptoms; in 26 samples from fully recovered patients after ~2 months of clinical follow-up [moderate (n = 23), or severe (n = 3)]; and in 14 non-infected controls. Plasma levels of the SARS-CoV-2 receptor, angiotensin-converting enzyme 2 (ACE2), were also determined by Western blot. Patients with COVID-19 without substantial neurological symptoms had significantly higher plasma concentrations of GFAP, a marker of astrocytic activation/injury, and of NfL and T-tau, markers of axonal damage and neuronal degeneration, compared with controls. All these biomarkers were correlated in COVID-19 patients at the acute phase. Plasma GFAP, NfL and T-tau levels were all normalized after recovery. Recovery was also observed in the return to normal values of the quotient between the ACE2 fragment and circulating full-length species, following the change noticed in the acute phase of infection. None of these biomarkers displayed differences in plasma samples at the acute phase or recovery when the COVID-19 subjects were sub-grouped according to occurrence of minor symptoms at re-evaluation 3 months after the acute episode (so called post-COVID or “long COVID”), such as asthenia, myalgia/arthralgia, anosmia/ageusia, vision impairment, headache or memory loss. Our study demonstrated altered plasma GFAP, NfL and T-tau levels in COVID-19 patients without substantial neurological manifestation at the acute phase of the disease, providing a suitable indication of CNS vulnerability; but these biomarkers fail to predict the occurrence of delayed minor neurological symptoms.This work was supported by grants from the Fondo de Investigaciones Sanitarias (PI19-01359, co-funded by the Fondo Europeo de Desarrollo Regional, FEDER “Investing in your future”), CIBERNED (Instituto de Salud Carlos III, Spain), by the Instituto de Investigación Sanitaria y Biomédica de Alicante (ISABIAL; grant 2020-0308) and from the Direcció General de Ciència I Investigació, Generalitat Valenciana (AICO/2021/308). MPL is supported by a BEFPI fellowship from the Generalitat Valenciana. HZ is a Wallenberg Scholar supported by grants from the Swedish Research Council (#2018-02532), the European Union’s Horizon Europe research and innovation programme under grant agreement No 101053962, Swedish State Support for Clinical Research (#ALFGBG-71320), the Alzheimer Drug Discovery Foundation (ADDF), USA (#201809-2016862), the AD Strategic Fund and the Alzheimer’s Association (#ADSF-21-831376-C, #ADSF-21-831381-C, and #ADSF-21-831377-C), the Bluefield Project, the Olav Thon Foundation, the Erling-Persson Family Foundation, Stiftelsen för Gamla Tjänarinnor, Hjärnfonden, Sweden (#FO2022-0270), the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 860197 (MIRIADE), the European Union Joint Programme–Neurodegenerative Disease Research (JPND2021-00694), and the UK Dementia Research Institute at UCL (UKDRI-1003).Peer reviewe
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