bluuebunny/crossref_metadata_2025_split huggingface dataset:
La formación en igualdad de género en los grados de educación primaria
Authors: Resa Ocio Ainhoa 
Published: April 2021

El artículo a continuación versa sobre la necesidad de adquirir una perspectiva de género para alcanzar la igualdad real en la escuela. La legislación respalda la igualdad de género como un principio de la educación. A fin de comprobar si la formación inicial del profesorado es adecuada a este respecto, se realiza un análisis de los planes de estudios de los grados de Educación Primaria desde una óptica de género. Para ello, se realiza una aproximación cualitativa basada en el análisis en profundidad del contenido de 72 guías docentes de los grados de Educación Primaria de la Universidad Complutense de Madrid y de entrevistas realizadas al profesorado. Los resultados muestran cómo la formación inicial del profesorado de los grados de Educación Primaria continúa girando en torno a una visión androcéntrica de la educación, mantiene un lenguaje sexista, un currículum en el que se invisibiliza a las mujeres que no se ajusta a la legislación vigente y no garantiza que las futuras generaciones sean educadas en igualdad. Se abre así la posibilidad de explorar la formación en igualdad de género a un nivel más amplio y la investigación sobre la aplicación efectiva de la coeducación en el sistema educativo español.
The article above deals with the need to acquire a gender perspective so as to achieve true equality in a school setting. This legislation backs gender equality as a principle of education. In order to confirm if the initial teacher training is adequate in this respect, an analysis of the curricula of the education degrees is conducted with a gender viewpoint. For this purpose, a qualitative approximation based on the analysis of content from 72 teaching guides and interviews with university teachers was carried out. The results show how teacher training in Primary Education degrees still revolves around an androcentric view of education, this has not adjusted to current legislation. Therefore, this does not guarantee that future generations are correctly educated in equality. This opens the possibility of exploring gender equality training at a broader level and research on the effective application of coeducation in the Spanish educational system.
Tutoría académica universitaria apoyada mediante WhatsApp: conocer sus ventajas y salvar sus desventajas
Authors: Suárez Lantarón Belén , Castillo Reche Irina S. , López Medialdea Ana María 
Published: April 2021

El presente artículo describe un proyecto de investigación e innovación docente que tiene como objetivo valorar el efecto del uso de la aplicación WhatsApp para el seguimiento y tutoría académica de los estudiantes universitarios de la Facultad de Educación de Murcia y de Extremadura. Los datos fueron recogidos a través de dos cuestionarios cumplimentados por los estudiantes antes y después del desarrollo de las asignaturas y aplicación del proyecto, un grupo de discusión con los docentes y el análisis del contenido de los mensajes enviados a través de la aplicación. Se analizaron los resultados obtenidos teniendo en cuenta la utilización y el uso de la aplicación, la satisfacción de los participantes y las ventajas e inconvenientes descritos. Los resultados muestran que se realiza un uso adecuado de la aplicación, se utiliza más que la tutoría convencional, se potencian sus ventajas y se debilitan sus inconvenientes y tanto las docentes como los estudiantes muestran altos niveles de satisfacción. Por tanto, podemos concluir que estamos ante una herramienta con un alto potencial para el apoyo a la tutoría académica.
This paper describes a teaching research and innovation project whose aim is to assess the effect of using the WhatsApp application for monitoring and academic tutoring of university students of the Faculty of Education of Murcia and Extremadura. The data were collected through two questionnaires filled out by the students before and after the development of the subjects and application of the project, a discussion group with the teachers and the analysis of the content of the messages sent through the application. The results obtained were analyzed taking into account the use and use of the application, the satisfaction of the participants and the advantages and disadvantages described. The results show that proper use of the application is made, more than conventional tutoring, its advantages are enhanced and its disadvantages are weakened and both teachers and students show high levels of satisfaction. Therefore, we can conclude that we are facing a tool with a high potential for supporting academic tutoring.
Capacidad aeróbica en escolares de Educación Primaria determinada mediante el test Course Navette: una revisión sistemática
Authors: López-Gil José Francisco , De Camargo Edina María , Yuste Lucas Juan Luis 
Published: April 2021

La capacidad aeróbica ha sido ampliamente estudiada a lo largo de los años, debido a su relación con la condición física, el rendimiento deportivo y la salud. Para la evaluación de la misma, un instrumento ampliamente utilizado es el test Course Navette, quecalcula de manera indirecta el consumo máximo de oxígeno. El objetivo de este estudio fue conocer el panorama actual del nivel de capacidad aeróbica en escolares de Educación Primaria, determinado a través del test Course Navette. Se realizó una revisión sistemática sobre estudios transversales llevados a cabo en todo el mundo, que evaluaron mediante el test Course Navette la capacidad aeróbica en escolares de Educación Primaria. En total, 19 estudios fueron incluidos en la revisión. La mayoría de los estudios muestran que los niños y niñas de primaria de diferentes países tienen una capacidad cardiorrespiratoria considerada como saludable. No obstante, las medias encontradas no son lo suficientemente eminentes, donde la volatilidad entre participantes resulta elevada. Por ello, es necesario mejorar los niveles de capacidad física en escolares, como un factor de importancia capital para el mantenimiento y optimización de la salud; especialmente, entre aquellos que se encuentran por debajo de los umbrales definidos para el riesgo cardiovascular.
Aerobic capacity has been extensively studied over the years because of its relationship to fitness, sports performance, and health. For its evaluation, a widely used instrument is the Course Navette test, which indirectly calculates the maximum oxygen consumption. The objective of this study was to know the current panorama of the level of aerobic capacity in primary school children, determined through the Course Navette test. A systematic review was carried out on transversal studies carried out all over the world, which evaluated aerobic capacity in primary school children by means of the Course Navette test. A total of 19 studies were included in the review. Most studies show that primary school children in different countries have a cardiorespiratory capacity that is not considered a health risk. However, the averages found are not eminent enough, where volatility among participants is high. Therefore, it is necessary to improve the levels of physical capacity in schoolchildren, as a factor of capital importance for the maintenance and optimization of health, especially among those who are below the thresholds defined for cardiovascular risk.
Identificación del pensamiento crítico en estudiantes universitarios de segundo semestre de la Corporación Universitaria del Caribe (CECAR)
Authors: García Medina María Angélica , Acosta Meza David , Atencia Andrade Asdrúbal , Rodríguez Sandoval Marco 
Published: April 2021

La investigación tiene como objetivo determinar el pensamiento crítico en estudiantes universitarios de segundo semestre de la Corporación Universitaria del Caribe CECAR. Se realizó una aproximación teórica sobre el constructo pensamiento crítico y como este es valorado por diversos autores. La investigación es de corte cuantitativo-descriptivo, conuestra intencional de 100 estudiantes pertenecientes a los programas de Ciencias del Deporte, Ingenierías y Licenciatura en Lingüística y Literatura. Se utiliza el test Evaluación del Pensamiento Crítico Contextualizado (EP-2C) propuesto por Carrasco (2018) que consta de cinco variables y 26 reactivos diseñados para medir las variables de estudio: análisis, interpretación, evaluación, inferencia y explicación. Los resultados arrojan que los estudiantes están en el nivel de PC mediamente logrado en el cual son capaces de argumentar acercándose levemente a la respuesta esperada. Esto indica que se deben diseñar estrategias en ambientes enriquecidos y secuencias didácticas que propendan por el fortalecimiento de las variables estudiadas.
The research aims to determine critical thinking in second semester university students of the Caribbean University Corporation (CECAR). A theoretical approach was made to the critical thinking construct and how various authors value it. The research is quantitative and descriptive, with an intentional sample of 100 students belonging to the programs of Sports Sciences, Engineering and Linguistics and Literature. The test Evaluation of Critical Contextualized Thinking (EP-2C) proposed by Carrasco (2018) is used. It consists of five variables and 26 reagents designed to measure the study variables: analysis, interpretation, evaluation, inference and explanation. The results show that the students are at the medium level of CP in which they are able to argue by getting slightly closer to the expected response. This indicates that strategies should be designed in enriched environments and didactic sequences that tend to strengthen the variables studied.
Educación patrimonial para una ciudadanía participativa. Evaluación de resultados de aprendizaje del alumnado en el programa Patrimonializarte
Authors: Castro-Calviño Leticia , Rodríguez-Medina Jairo , López-Facal Ramón 
Published: April 2021

Se aborda la evaluación de programas de educación patrimonial, una materia pendiente en España. A partir de la implementación del programa Patrimonializarte y con el fin de valorar su eficacia, eficiencia y efectividad, se realiza la evaluación inicial, formativa y sumativa atendiendo a los resultados de aprendizaje de los 111 alumnos/as participantes. Se sigue un modelo de planificación y acción basado en el diseño y evaluación del programa que incorpora el trabajo sobre el patrimonio local y el uso de las TIC. Se analiza también la valoración del alumnado sobre la metodología utilizada. Se parte de la complementariedad metodológica basándose en el estudio múltiple de casos (6 grupos de 2 centros educativos en Galicia, España). Los principales resultados muestran: a) un importante impacto en la conciencia de conservación en el alumnado de educación infantil b) una creciente preocupación por el patrimonio intangible en educación primaria c) la importancia de la difusión para educación secundaria. El programa se considera pertinente, pues los alumnos/as han adquirido aprendizajes significativos para convertirse en ciudadanos que intervienen en el patrimonio de manera sostenible.
This paper examines the evaluation of heritage education programmes, a pending challenge in Spain. With the aim of evaluating the usefulness, efficiency and effectiveness of the Patrimonializarte programme, initial, formative and summative evaluations have been carried out with regard to the learning outcomes of the 111 pupils who participated in the programme. A planning and action model is followed based on the design and evaluation of the programme, which incorporates work on local heritage and the use of ICT resources. The evaluation made by the students of the methodology employed is also analysed. Methodological complementarity is assumed based on the study of multiple cases (6 groups from two schools in Galicia, Spain). The main results show: a) a significant impact on the awareness of conservation in early years pupils; b) a growing concern for intangible heritage in primary education; c) the importance of dissemination for secondary education. The programme is considered relevant due to the fact that the pupils have acquired significant learning with regard to becoming citizens who intervene in heritage in a sustainable way.
3D Printed Bioelectronic Microwells
Authors: Katseli Vassiliki , Angelopoulou Michailia , Kokkinos Christos 
Published: April 2021

AbstractThe in‐house and on‐demand fabrication of electrochemical integrated biosensors is a great challenge, especially in the field of modern point‐of‐care diagnostics. 3D printing technology allows the production of specialized electronic devices adapted to the required conditions, and 3D printed thermoplastic electrodes have shown hopeful achievements mainly in enzymatic bioassays. This work describes a novel configuration of integrated all‐3D‐printed electrochemical microtitration wells (e‐wells) for direct quantum dot‐based (QDs) and enzymatic bioassays. The e‐wells enable the in situ development of complete bioassays, that is, from sample addition to biomarker detection, without the need for external equipment other than a micropipette and a detector. The bioanalytical capability of the 3D e‐wells is demonstrated through the voltammetric bioassay of C‐reactive protein employing biotinylated reporter antibody and streptavidin‐conjugated CdSe/ZnS QDs. In addition, in order to extend their scope to enzymatic biosensing, e‐wells are applied to the amperometric determination of hydrogen peroxide by‐products, demonstrating their universal applicability in electrochemical bioassays.
Random Nanofracture‐Enabled Physical Unclonable Function
Authors: Zhang Taiping , Shu Zhiwen , Zhang Lijun , Chen Yiqin , Feng Zhanyong , Hu Yueqiang , Huang Feng , Wang Pidong , Li Dong , Yao Yao , Sun Song , Duan Huigao 
Published: April 2021

AbstractPhysical unclonable function (PUF) is promising for anticounterfeiting and security applications. In this paper, a PUF concept is demonstrated based on the stochastic generation of nanodot matrix via mechanical stripping of a gold film kirigami with arrayed nanoscale split‐ring cuts. The random occurrence of nanofracture of metallic nanoconnection at split‐ring parts results in unpredictable remaining (labeled as “1”) or peeling‐off (labeled as “0”) of nanodots in each unit and thus generates a unclonable binary matrix. The highest randomness, i.e., 50% nanodots remaining in binary matrix, can be achieved by tuning the width of nanoconnection. Mechanical modeling reveals that the PUF can be caused by fracture‐related variations such as the effective strength of the metallic nanoconnection and nanoscale adhesion. A quick response code (QR) can be retrieved for analysis from the dark field photograph of generated nanodot matrix based on the nanofacture‐enabled PUF using in‐house developed solver, demonstrating excellent unclonability, repeatability, and uniformity. The encoding capacity of our PUFs can be conveniently scaled up or down depending on the demands of applications, which can be beneficial to advanced authentication and identification systems with high security.
Comparing the willingness to pay through three elicitation mechanisms: An experimental evidence for organic egg product
Authors: Dinc‐Cavlak Ozge , Ozdemir Ozlem 
Published: April 2021

AbstractThis study is the first attempt to elicit individual willingness to pay (WTP) for varying attributes of a specific food product, the organic egg, using three elicitation methods, namely, a real choice experiment (RCE), the Becker–DeGroot–Marschak (BDM) mechanism, and a RCE by using the BDM mechanism (RCE‐BDM). The experimental setting allows for a comparison of these three methods. The mixed logit models in WTP space for the choice data and the random‐effects Tobit model for the BDM data are used for the analyses. The results show that the individuals' WTP varies across elicitation methods. More specifically, the WTP of the RCE is lower than the WTP of the BDM experiment, and mixed results have been found while comparing the WTP of the RCE‐BDM experiment and WTP of the BDM experiment. Lastly, individuals are willing to pay a premium for health, environment‐friendly, and animal welfare attributes for all three elicitation methods: the health attribute's premium having the highest value followed by those of animal welfare and environment‐ friendliness. The results have not changed with information treatment indicating robustness of the findings. [EconLit Citations: C91, C35, D12].
Hydrogen Atom Transfer from HOO. to ortho‐Quinones Explains the Antioxidant Activity of Polydopamine
Authors: Guo Yafang , Baschieri Andrea , Mollica Fabio , Valgimigli Luca , Cedrowski Jakub , Litwinienko Grzegorz , Amorati Riccardo 
Published: April 2021

AbstractMelanins are stable and non‐toxic biomaterials with a great potential as chemopreventive agents for diseases connected with oxidative stress, but the mechanism of their antioxidant action is unclear. Herein, we show that polydopamine (PDA), a well‐known synthetic melanin, becomes an excellent trap for alkylperoxyl radicals (ROO., typically formed during autoxidation of lipid substrates) in the presence of hydroperoxyl radicals (HOO.). The key reaction explaining this peculiar antioxidant activity is the reduction of the ortho‐quinone moieties present in PDA by the reaction with HOO.. This reaction occurs via a H‐atom transfer mechanism, as demonstrated by the large kinetic solvent effect of the reaction of a model quinone (3,5‐di‐tert‐butyl‐1,2‐benzoquinone) with HOO. (k=1.5×107 and 1.1×105 M−1 s−1 in PhCl and MeCN). The chemistry disclosed herein is an important step to rationalize the redox‐mediated bioactivity of melanins and of quinones.
Highly Efficient Electro‐reforming of 5‐Hydroxymethylfurfural on Vertically Oriented Nickel Nanosheet/Carbon Hybrid Catalysts: Structure–Function Relationships
Authors: Lu Xingyu , Wu Kuang‐Hsu , Zhang Bingsen , Chen Junnan , Li Fan , Su Bing‐Jian , Yan Pengqiang , Chen Jin‐Ming , Qi Wei 
Published: April 2021

AbstractNi‐promoted electrocatalytic biomass reforming has shown promising prospect in enabling high value‐added product synthesis. Here, we developed a novel hybrid catalyst with Ni nanosheet forests anchored on carbon paper. The hybrid catalyst exhibits high efficiency in electrooxidation of HMF to FDCA coupling with H2 production in high purity. The Ni nanosheets have small crystal grain sizes with abundant edges, which is able to deliver an efficient HMF oxidation to FDCA (selectivity >99 %) at low potential of 1.36 VRHE with high stability. The post‐reaction structure analysis reveals the Ni nanosheets would transfer electrons to carbon and readily turn into NiOx and Ni(OH)x during the reaction. DFT results suggest high valence Ni species would facilitate the chemical adsorption (activation) of HMF revealing the reaction pathway. This work emphasizes the importance of the precise control of Ni activity via atomic structure engineering.
Atomically Precise Gold Nanoclusters as Model Catalysts for Identifying Active Sites for Electroreduction of CO2
Authors: Seong Hoeun , Efremov Vladimir , Park Gibeom , Kim Hyunwoo , Yoo Jong Suk , Lee Dongil 
Published: April 2021

AbstractAccurate identification of active sites is critical for elucidating catalytic reaction mechanisms and developing highly efficient and selective electrocatalysts. Herein, we report the atomic‐level identification of active sites using atomically well‐defined gold nanoclusters (Au NCs) Au25, Au38, and Au144 as model catalysts in the electrochemical CO2 reduction reaction (CO2RR). The studied Au NCs exhibited remarkably high CO2RR activity, which increased with increasing NC size. Electrochemical and X‐ray photoelectron spectroscopy analyses revealed that the Au NCs were activated by removing one thiolate group from each staple motif at the beginning of CO2RR. In addition, density functional theory calculations revealed higher charge densities and upshifts of d‐states for dethiolated Au sites. The structure–activity properties of the studied Au NCs confirmed that dethiolated Au sites were the active sites and that CO2RR activity was determined by the number of active sites on the cluster surface.
Integration of a Nucleoside Triphosphate Regeneration System in the One‐pot Synthesis of UDP‐sugars and Hyaluronic Acid
Authors: Gottschalk Johannes , Blaschke Lea , Aßmann Miriam , Kuballa Jürgen , Elling Lothar 
Published: April 2021

AbstractEnzymatic synthesis is a promising approach to produce hyaluronic acid (HA) products with defined molecular weight (MW) and dispersity. We here report on the evaluation of nucleoside triphosphate (NTP) regeneration system for the synthesis of the precursors uridine‐5'‐diphosphate α‐d‐N‐acetylglucosamine (UDP‐GlcNAc) and uridine‐5'‐diphosphate α‐d‐glucuronic acid (UDP‐GlcA) and integration in the one‐pot synthesis of HA. By integration of polyphosphate kinase from Ruegeria pomeroyi (RpPPK2‐3) into the enzyme cascade to synthesize UDP‐GlcA we reached 89 % yield after 1 h with a regeneration cycle number (RCN) of 17. With the UDP‐GlcNAc cascade, the ATP concentration was lowered 250‐fold and reached 94 % yield after 1 h with an RCN of 234. Integration of the RpPPK2‐3 regeneration system in one‐pot HA synthesis afforded optimization of MgCl2 and ATP starting concentrations. With 25 mM MgCl2 and 0.1 mM ATP, a HA concentration of 0.81 g L−1 with an average MW of 1.17 MDa and dispersity of about 1.08 and an RCN of 75 was obtained. We conclude that integration of NTP regeneration with RpPPK2‐3 expanded the enzymatic possibilities to produce HA with lower range MW.
Spatially Resolved Electron Transport through Anode‐Respiring Geobacter sulfurreducens Biofilms: Controls and Constraints
Authors: He Xiaojia , Chadwick Grayson , Jiménez Otero Fernanda , Orphan Victoria , Meile Christof 
Published: April 2021

AbstractInvited for this month's cover picture is the group of Prof. Christof Meile at the University of Georgia, USA and Prof. Victoria Orphan at the California Institute of Technology, USA. The Front Cover shows characteristic images of G. sulfurreducens biofilms on the anode surface (gray), the distribution of anabolic activity (yellow=high, blue=low), and the equation central to the description of electron transfer and simulated activity profiles. Read the full text of the Article at 10.1002/celc.202100111.
Selectivity in the Ligand Functionalization of Photocatalytic Metal Oxide Nanoparticles for Phase Transfer and Self‐Assembly Applications
Authors: Borah Rituraj , Ninakanti Rajeshreddy , Nuyts Gert , Peeters Hannelore , Pedrazo‐Tardajos Adrián , Nuti Silvia , Vande Velde Christophe , De Wael Karolien , Lenaerts Silvia , Bals Sara , Verbruggen Sammy W. 
Published: April 2021

AbstractThe functionalization of photocatalytic metal oxide nanoparticles of TiO2, ZnO, WO3 and CuO with amine‐terminated (oleylamine) and thiol‐terminated (dodecane‐1‐thiol) alkyl‐chain ligands was studied under ambient conditions. A high selectivity was observed in the binding specificity of a ligand towards nanoparticles of these different oxides. It was observed that oleylamine binds stably to only TiO2 and WO3, whereas dodecane‐1‐thiol binds stably only to ZnO and CuO. Similarly, polar‐to‐nonpolar solvent phase transfer of TiO2 and WO3 nanoparticles could be achieved by using oleylamine, but not dodecane‐1‐thiol, whereas the opposite holds for ZnO and CuO. The surface chemistry of ligand‐functionalized nanoparticles was probed by attenuated total reflectance (ATR)‐FTIR spectroscopy, which enabled the occupation of the ligands at the active sites to be elucidated. The photostability of the ligands on the nanoparticle surface was determined by the photocatalytic self‐cleaning properties of the material. Although TiO2 and WO3 degrade the ligands within 24 h under both UV and visible light, ligands on ZnO and CuO remain unaffected. The gathered insights are also highly relevant from an application point of view. As an example, because the ligand‐functionalized nanoparticles are hydrophobic in nature, they can be self‐assembled at the air‐water interface to give nanoparticle films with demonstrated photocatalytic as well as anti‐fogging properties.