168 results on '"Javier Cejudo"'
Search Results
2. Social Competence and Peer Social Acceptance: Evaluating Effects of an Educational Intervention in Adolescents
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Pablo Luna, Jerónimo Guerrero, Débora Rodrigo-Ruiz, Lidia Losada, and Javier Cejudo
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quality physical education ,sport education model ,social competence ,peer social acceptance ,gender ,adolescents ,Psychology ,BF1-990 - Abstract
This study aims to evaluate the impact of an educational intervention on social competence and social acceptance among adolescents. The participants were 106 adolescents aged 12–15 years (M = 13.41 years; SD = 0.81 years). Participants were randomly assigned to the control group (n = 44) and an experimental group (n = 69). In the experimental group, an intervention based on the Sport Education Model (SEM) was applied. While in the control group, an intervention based on the Traditional Model of Direct Instruction (TM-DI) was carried out. An experimental design with repeated pretest and posttest measurements was developed. The Adolescent Multidimensional Social Competence Questionnaire (AMSC-Q) was used to assess social competence. The Guess Who (GW4) questionnaire was used to assess social acceptance (SA) among peers. The preliminary results showed that the intervention based on the SEM (experimental group) promoted more significant improvements in some indicators of social competence and social acceptance among peers than those obtained with the TM-DI (control group). The results confirm a similar impact of the intervention between boys and girls. These preliminary results suggest the potential of the Sport Education Model with adolescents.
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- 2020
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3. Using a Mindfulness-Based Intervention to Promote Subjective Well-Being, Trait Emotional Intelligence, Mental Health, and Resilience in Women With Fibromyalgia
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Javier Cejudo, Francisco-Javier García-Castillo, Pablo Luna, Débora Rodrigo-Ruiz, Roberto Feltrero, and Alfonso Moreno-Gómez
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fibromyalgia ,mindfulness ,subjective well-being ,chronic pain ,random assignment ,Psychology ,BF1-990 - Abstract
The objective of the present study was to experimentally assess the effects of a mindfulness-based intervention (MBI) for the improvement of subjective well-being, trait emotional intelligence (TEI), mental health, and resilience in a sample of women with fibromyalgia (FM). The sample consisted of 104 women, between 29 and 77 years old (M = 47.59; SD = 5.93). The measures used were as follows: Satisfaction with Life Scale (SWLS), Positive and Negative Affection Scale (PANAS), Trait Emotional Intelligence Questionnaire Short Form (TEIQue-SF), Mental Health Questionnaire (MH-5), and Resilience Scale (ER-14). A quasi-experimental design of repeated measures with a control group (CG) was used: before and after the application of the treatment and a follow-up assessment 6 months after the completion of the intervention. In order to assess the effect of the program, the participants were randomly assigned to the experimental and control conditions. In the pretest evaluation, a multivariate analysis of variance (MANOVA) and analysis of variance (ANOVA) were carried out. In the post-test evaluation, a multivariate analysis of covariance (MANCOVA) of the study variables as a whole was performed. Then, descriptive analyses and analysis of covariance (ANCOVA) of the post-test scores (covariate pretest score) were performed. In the follow-up evaluation, a MANCOVA of the study variables as a whole was performed. Then, descriptive and ANCOVA analyses of the follow-up scores (covariate pretest score) were performed. In addition, the effect size was calculated using partial eta-squared (μ2). The post-test results confirmed statistically significant differences in satisfaction with life (SWL), positive affect (PA), mental health, and resilience. The follow-up results showed statistically significant differences in SWL, PA, TEI, mental health, and resilience. The study provides an effective intervention tool that has been validated experimentally. The general results allow the emphasis of the importance of the implementation of MBIs framed in non-pharmacological treatments in FM.
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- 2019
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4. Pathways Into Psychosocial Adjustment in Children: Modeling the Effects of Trait Emotional Intelligence, Social-Emotional Problems, and Gender
- Author
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Jose A. Piqueras, Ornela Mateu-Martínez, Javier Cejudo, and Juan-Carlos Pérez-González
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emotional intelligence ,psychosocial adjustment ,social acceptance/rejection ,childhood ,gender ,emotional education ,Psychology ,BF1-990 - Abstract
Trait Emotional intelligence (Trait EI) can be understood as a personality trait related to individual differences in recognition, processing, and the regulation of emotionally charged information. Trait EI has been considered a variable of great importance in determining psychosocial adjustment. However, most research on Trait EI has focused on adult and adolescent populations, while very few studies have explored its influence on children. The aim of this study was to analyze possible pathways into psychosocial adjustment in children by examining the combined effects of Trait EI and emotional and social problems. It also aimed to assess the possible mediating role of gender in this relationship. A total of 268 Spanish children participated in this study, ranging in age from 8 to 12 years (mean age = 10.09, SD = 1.32, 45.10% male). Selected measures were applied through a web-based survey called DetectaWeb. The regression and mediation/moderation analyses confirmed that psychosocial adjustment in children was determined by Trait EI directly and by emotional and social problems in an indirect way. Together, the three variables explained 46% of the variance in psychosocial adjustment, although Trait EI was the most powerful predictor (44%), demonstrating incremental validity over and above social and emotional problems. In addition, gender was shown to be a moderating variable between Trait EI and psychosocial adjustment; for girls specifically, lower Trait EI scores were a determinant of lower levels of psychosocial adjustment, regardless of emotional and social problems. It can be concluded that the identified pathways provide keys for emotional education interventions aimed at promoting psychosocial adjustment, well-being, and good mental health among children. Our findings support the buffer role of Trait EI against maladjustment risk in children, but more clearly in girls.
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- 2019
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5. EFICACIA SUBJETIVA Y VALIDEZ SOCIAL DEL PROGRAMA DE INTELIGENCIA EMOCIONAL DULCINEA-CHILDREN
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PASCUAL, GEMA ALHAMBRA, primary, NOGALES, PABLO LUNA, additional, DONAIRE, ALBA RODRÍGUEZ, additional, LAGUNA, VÍCTOR MARTÍN, additional, DELGADO, MARÍA LUZ LÓPEZ, additional, and PRADO, JAVIER CEJUDO, additional
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- 2022
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6. UNA EXPERIENCIA EDUCATIVA EN ALUMNADO CON DESVENTAJAS SOCIOCULTURALES
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NOGALES, PABLO LUNA, primary, DONAIRE, ALBA RODRÍGUEZ, additional, PASCUAL, GEMA ALHAMBRA, additional, LAGUNA, VÍCTOR MARTÍN, additional, DELGADO, MARÍA LUZ LÓPEZ, additional, and PRADO, JAVIER CEJUDO, additional
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- 2022
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7. The Functional Relationship between NADPH Thioredoxin Reductase C, 2-Cys Peroxiredoxins, and m-Type Thioredoxins in the Regulation of Calvin–Benson Cycle and Malate-Valve Enzymes in Arabidopsis
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Víctor Delgado-Requerey, Francisco Javier Cejudo, and María-Cruz González
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Calvin–Benson cycle ,chloroplast ,2-Cys peroxiredoxin ,malate valve ,NADPH-dependent Trx reductase (NTRC) ,redox regulation ,Therapeutics. Pharmacology ,RM1-950 - Abstract
The concerted regulation of chloroplast biosynthetic pathways and NADPH extrusion via malate valve depends on f and m thioredoxins (Trxs). The finding that decreased levels of the thiol-peroxidase 2-Cys peroxiredoxin (Prx) suppress the severe phenotype of Arabidopsis mutants lacking NADPH-dependent Trx reductase C (NTRC) and Trxs f uncovered the central function of the NTRC-2-Cys-Prx redox system in chloroplast performance. These results suggest that Trxs m are also regulated by this system; however, the functional relationship between NTRC, 2-Cys Prxs, and m-type Trxs is unknown. To address this issue, we generated Arabidopsis thaliana mutants combining deficiencies in NTRC, 2-Cys Prx B, Trxs m1, and m4. The single trxm1 and trxm4 mutants showed a wild-type phenotype, growth retardation being noticed only in the trxm1m4 double mutant. Moreover, the ntrc-trxm1m4 mutant displayed a more severe phenotype than the ntrc mutant, as shown by the impaired photosynthetic performance, altered chloroplast structure, and defective light-dependent reduction in the Calvin–Benson cycle and malate-valve enzymes. These effects were suppressed by the decreased contents of 2-Cys Prx, since the quadruple ntrc-trxm1m4-2cpb mutant displayed a wild-type-like phenotype. These results show that the activity of m-type Trxs in the light-dependent regulation of biosynthetic enzymes and malate valve is controlled by the NTRC-2-Cys-Prx system.
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- 2023
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8. Effectiveness of the videogame 'Spock' for the improvement of the emotional intelligence on psychosocial adjustment in adolescents.
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Javier Cejudo, Mari Luz López-Delgado, and Lidia Losada
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- 2019
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9. Current Knowledge on Mechanisms Preventing Photosynthesis Redox Imbalance in Plants
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María-Cruz González, Francisco Javier Cejudo, Mariam Sahrawy, and Antonio Jesús Serrato
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thioredoxins (TRX) ,photosynthesis ,redox ,NADPH thioredoxin reductase C (NTRC) ,non-photochemical quenching (NPQ) ,cyclic electron flow (CEF) ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Photosynthesis includes a set of redox reactions that are the source of reducing power and energy for the assimilation of inorganic carbon, nitrogen and sulphur, thus generating organic compounds, and oxygen, which supports life on Earth. As sessile organisms, plants have to face continuous changes in environmental conditions and need to adjust the photosynthetic electron transport to prevent the accumulation of damaging oxygen by-products. The balance between photosynthetic cyclic and linear electron flows allows for the maintenance of a proper NADPH/ATP ratio that is adapted to the plant’s needs. In addition, different mechanisms to dissipate excess energy operate in plants to protect and optimise photosynthesis under adverse conditions. Recent reports show an important role of redox-based dithiol–disulphide interchanges, mediated both by classical and atypical chloroplast thioredoxins (TRXs), in the control of these photoprotective mechanisms. Moreover, membrane-anchored TRX-like proteins, such as HCF164, which transfer electrons from stromal TRXs to the thylakoid lumen, play a key role in the regulation of lumenal targets depending on the stromal redox poise. Interestingly, not all photoprotective players were reported to be under the control of TRXs. In this review, we discuss recent findings regarding the mechanisms that allow an appropriate electron flux to avoid the detrimental consequences of photosynthesis redox imbalances.
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- 2021
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10. Decision letter: The autophagy receptor NBR1 directs the clearance of photodamaged chloroplasts
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Francisco Javier, Cejudo, additional
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- 2023
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11. Exploring the Functional Relationship between y-Type Thioredoxins and 2-Cys Peroxiredoxins in Arabidopsis Chloroplasts
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Ana Jurado-Flores, Víctor Delgado-Requerey, Alicia Gálvez-Ramírez, Leonor Puerto-Galán, Juan Manuel Pérez-Ruiz, and Francisco Javier Cejudo
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2-Cys peroxiredoxin ,thioredoxin y ,NTRC ,thioredoxin x ,redox regulation ,stress response ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Thioredoxins (Trxs) are small, ubiquitous enzymes that catalyze disulphide–dithiol interchange in target enzymes. The large set of chloroplast Trxs, including f, m, x and y subtypes, use reducing equivalents fueled by photoreduced ferredoxin (Fdx) for fine-tuning photosynthetic performance and metabolism through the control of the activity of redox-sensitive proteins. Although biochemical analyses suggested functional diversity of chloroplast Trxs, genetic studies have established that deficiency in a particular Trx subtype has subtle phenotypic effects, leading to the proposal that the Trx isoforms are functionally redundant. In addition, chloroplasts contain an NADPH-dependent Trx reductase with a joint Trx domain, termed NTRC. Interestingly, Arabidopsis mutants combining the deficiencies of x- or f-type Trxs and NTRC display very severe growth inhibition phenotypes, which are partially rescued by decreased levels of 2-Cys peroxiredoxins (Prxs). These findings indicate that the reducing capacity of Trxs f and x is modulated by the redox balance of 2-Cys Prxs, which is controlled by NTRC. In this study, we explored whether NTRC acts as a master regulator of the pool of chloroplast Trxs by analyzing its functional relationship with Trxs y. While Trx y interacts with 2-Cys Prxs in vitro and in planta, the analysis of Arabidopsis mutants devoid of NTRC and Trxs y suggests that Trxs y have only a minor effect, if any, on the redox state of 2-Cys Prxs.
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- 2020
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12. A chloroplast redox relay adapts plastid metabolism to light and affects cytosolic protein quality control
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Juan Manuel Pérez-Ruiz, Julia Jiménez-López, Francisco Javier Cejudo, Francisco José Romero-Campero, Valle Ojeda, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, and Ministerio de Economía y Competitividad (España)
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0106 biological sciences ,0301 basic medicine ,Cytoplasm ,Chloroplasts ,Light ,Physiology ,Mutant ,Arabidopsis ,Plant Science ,01 natural sciences ,Redox ,03 medical and health sciences ,Genetics ,Arabidopsis thaliana ,Plastid ,Research Articles ,Ferredoxin ,biology ,Arabidopsis Proteins ,Chemistry ,Darkness ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Cell biology ,Chloroplast ,030104 developmental biology ,bacteria ,Peroxiredoxin ,Oxidation-Reduction ,010606 plant biology & botany - Abstract
In chloroplasts, thiol-dependent redox regulation is linked to light since the disulfide reductase activity of thioredoxins (Trxs) relies on photo-reduced ferredoxin (Fdx). Furthermore, chloroplasts harbor an NADPH-dependent Trx reductase (NTR) with a joint Trx domain, termed NTRC. The activity of these two redox systems is integrated by the redox balance of 2-Cys peroxiredoxin (Prx), which is controlled by NTRC. However, NTRC was proposed to participate in redox regulation of additional targets, prompting inquiry into whether the function of NTRC depends on its capacity to maintain the redox balance of 2-Cys Prxs or by direct redox interaction with chloroplast enzymes. To answer this, we studied the functional relationship of NTRC and 2-Cys Prxs by a comparative analysis of the triple Arabidopsis (Arabidopsis thaliana) mutant, ntrc-2cpab, which lacks NTRC and 2-Cys Prxs, and the double mutant 2cpab, which lacks 2-Cys Prxs. These mutants exhibit almost indistinguishable phenotypes: in growth rate, photosynthesis performance, and redox regulation of chloroplast enzymes in response to light and darkness. These results suggest that the most relevant function of NTRC is in controlling the redox balance of 2-Cys Prxs. A comparative transcriptomics analysis confirmed the phenotypic similarity of the two mutants and suggested that the NTRC-2-Cys Prxs system participates in cytosolic protein quality control. We propose that NTRC and 2-Cys Prxs constitute a redox relay, exclusive to photosynthetic organisms that fine-tunes the redox state of chloroplast enzymes in response to light and affects transduction pathways towards the cytosol
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- 2021
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13. Plastid 2-Cys peroxiredoxins are essential for embryogenesis in Arabidopsis
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Antonia M. Gallardo-Martínez, Julia Jiménez-López, María Luisa Hernández, Juan Manuel Pérez-Ruiz, and Francisco Javier Cejudo
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Organic Chemistry ,Clinical Biochemistry ,Biochemistry - Published
- 2023
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14. Characterization ofCYCLOPHILLIN38shows that a photosynthesis-derived systemic signal controls lateral root emergence
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José R. Dinneny, Juan Manuel Pérez-Ruiz, Lina Duan, Francisco Javier Cejudo, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
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0106 biological sciences ,Chloroplasts ,Photosystem II ,Physiology ,Arabidopsis ,Plant Science ,Root system ,Photosynthesis ,Plant Roots ,01 natural sciences ,Electron Transport ,Cyclophilins ,03 medical and health sciences ,Plant Growth Regulators ,Auxin ,Genetics ,Arabidopsis thaliana ,Research Articles ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,Indoleacetic Acids ,biology ,Arabidopsis Proteins ,Lateral root ,Photosystem II Protein Complex ,food and beverages ,biology.organism_classification ,Cell biology ,Plant Leaves ,Chloroplast ,Phenotype ,chemistry ,Seedlings ,Mutation ,Shoot ,Signal Transduction ,010606 plant biology & botany - Abstract
Photosynthesis in leaves generates fixed-carbon resources and essential metabolites that support sink tissues, such as roots. Two of these metabolites, sucrose and auxin, promote growth in root systems, but the explicit connection between photosynthetic activity and control of root architecture has not been explored. Through a mutant screen to identify pathways regulating root system architecture, we identified a mutation in the Arabidopsis thaliana CYCLOPHILIN 38 (CYP38) gene, which causes accumulation of pre-emergent stage lateral roots. CYP38 was previously reported to stabilize photosystem II (PSII) in chloroplasts. CYP38 expression is enriched in shoots, and grafting experiments show that the gene acts non-cell-autonomously to promote lateral root emergence. Growth of wild-type plants under low-light conditions phenocopies the cyp38 lateral root emergence defect, as does the inhibition of PSII-dependent electron transport or Nicotinamide adenine dinucleotide phosphate (NADPH) production. Importantly, these perturbations to photosynthetic activity rapidly suppress lateral root emergence, which is separate from their effects on shoot size. Supplementary exogenous sucrose largely rescued primary root (PR) growth in cyp38, but not lateral root growth. Auxin (indole-3-acetic acid (IAA)) biosynthesis from tryptophan is dependent on reductant generated during photosynthesis. Consistently, we found that wild-type seedlings grown under low light and cyp38 mutants have highly diminished levels of IAA in root tissues. IAA treatment rescued the cyp38 lateral root defect, revealing that photosynthesis promotes lateral root emergence partly through IAA biosynthesis. These data directly confirm the importance of CYP38-dependent photosynthetic activity in supporting root growth, and define the specific contributions of two metabolites in refining root architecture under light-limited conditions
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- 2020
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15. Promoviendo el éxito escolar mediante una intervención basada en atención plena (mindfulness) en Educación Infantil: Programa Mindkinder
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Pablo Luna, Alfonso Moreno-Gómez, and Javier Cejudo
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Developmental and Educational Psychology ,Education - Abstract
Resumen El presente estudio tiene como finalidad evaluar la eficacia del programa Mindkinder basado en atencion plena (mindfulness) sobre la adaptacion escolar, los problemas conductuales escolares y los resultados escolares en alumnado de Educacion Infantil. Se utiliza un diseno cuasiexperimental de medidas repetidas pretest-postest con grupo de control. Los participantes en el estudio son 118 alumnos y alumnas (el 55.2% eran ninas y el 44.8% eran ninos). El alumnado tiene de 5 a 6 anos (M = 5.69, DT = 0.37). El programa se implementa durante las horas lectivas. Los resultados muestran que el programa estimula en los grupos experimentales una mejora significativa en algunas variables de adaptacion escolar, problemas conductuales escolares y resultados escolares. Estos resultados sugieren que los programas de atencion plena pueden ser eficaces en la promocion de la adaptacion escolar y mejora de los resultados escolares en la infancia. Se discuten las implicaciones de estos hallazgos y se realizan recomendaciones para futuras investigaciones.
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- 2020
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16. Promoting school success through mindfulness-based interventions in early childhood
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Javier Cejudo, Pablo Luna, and Alfonso Moreno-Gómez
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Early childhood education ,Mindfulness ,education ,School adjustment ,General Medicine ,Early childhood ,Psychology ,Mindfulness based interventions ,Clinical psychology - Abstract
This study aims to assess the effectiveness of the mindfulness-based Mindkinder programme on school adjustment, school behavioural problems, and school outcomes in Early Childhood Education students. A quasi-experimental design of repeated pretest-posttest measures with a control group is used. The participants in the study were 118 students (55.2% girls, and 44.8% boys). The age of children ranged from 5 to 6 years (M = 5.69, SD = .37). The programme is implemented during school time. The results show that the programme promotes in the experimental groups a significant improvement in some school adjustment, school behavioural problems, and school outcomes variables. These results suggest that mindfulness programmes can be effective in promoting school adjustment and improving school outcomes in childhood. The implications of these findings are discussed, and recommendations for future research are formulated.
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- 2020
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17. Exploring the effects of a mindfulness-based intervention in university students: MindKinder adult version program (MK-A)
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Alfonso Moreno-Gómez, Pablo Luna, Concepción García-Diego, Alba Rodríguez-Donaire, and Javier Cejudo
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Social Psychology ,Strategy and Management ,Geography, Planning and Development ,Public Health, Environmental and Occupational Health ,Business and International Management - Published
- 2023
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18. Current Knowledge on Mechanisms Preventing Photosynthesis Redox Imbalance in Plants
- Author
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Francisco Javier Cejudo, María-Cruz González, Antonio Jesús Serrato, Mariam Sahrawy, Ministerio de Ciencia, Innovación y Universidades (España), and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
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NADPH thioredoxin reductase C (NTRC) ,Physiology ,Clinical Biochemistry ,chemistry.chemical_element ,Review ,RM1-950 ,Photosynthesis ,Biochemistry ,Oxygen ,Redox ,Ferredoxin/PGR5/PGRL1-dependent plastoquinone reductase (PGR5/PGRL1) ,thioredoxins (TRX) ,Molecular Biology ,NADH dehydrogenase-like complex (NDH) ,photosynthesis ,cyclic electron flow (CEF) ,Chemistry ,Assimilation (biology) ,Non-photochemical quenching (NPQ) ,Cell Biology ,Electron transport chain ,ferredoxin/PGR5/PGRL1-dependent plastoquinone reductase (PGR5/PGRL1) ,non-photochemical quenching (NPQ) ,Cyclic electron flow (CEF) ,Thylakoid ,redox ,Thioredoxins (TRX) ,Biophysics ,Chloroplast Thioredoxins ,Therapeutics. Pharmacology ,Excess energy - Abstract
Photosynthesis includes a set of redox reactions that are the source of reducing power and energy for the assimilation of inorganic carbon, nitrogen and sulphur, thus generating organic compounds, and oxygen, which supports life on Earth. As sessile organisms, plants have to face continuous changes in environmental conditions and need to adjust the photosynthetic electron transport to prevent the accumulation of damaging oxygen by-products. The balance between photosynthetic cyclic and linear electron flows allows for the maintenance of a proper NADPH/ATP ratio that is adapted to the plant’s needs. In addition, different mechanisms to dissipate excess energy operate in plants to protect and optimise photosynthesis under adverse conditions. Recent reports show an important role of redox-based dithiol–disulphide interchanges, mediated both by classical and atypical chloroplast thioredoxins (TRXs), in the control of these photoprotective mechanisms. Moreover, membrane-anchored TRX-like proteins, such as HCF164, which transfer electrons from stromal TRXs to the thylakoid lumen, play a key role in the regulation of lumenal targets depending on the stromal redox poise. Interestingly, not all photoprotective players were reported to be under the control of TRXs. In this review, we discuss recent findings regarding the mechanisms that allow an appropriate electron flux to avoid the detrimental consequences of photosynthesis redox imbalances
- Published
- 2021
19. Effectiveness of the videogame 'Spock' for the improvement of the emotional intelligence on psychosocial adjustment in adolescents
- Author
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Lidia Losada, Mari Luz López-Delgado, and Javier Cejudo
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Analysis of covariance ,Externalization ,Emotional intelligence ,media_common.quotation_subject ,05 social sciences ,050301 education ,050801 communication & media studies ,Human-Computer Interaction ,0508 media and communications ,Arts and Humanities (miscellaneous) ,Cohort ,Trait ,Personality ,Psychology ,0503 education ,Psychosocial ,Video game ,General Psychology ,media_common ,Clinical psychology - Abstract
The aim of this study was to experimentally assess to what extent the video game “Spock” improves the emotional intelligence and psychosocial adjustment of adolescents. The study was carried out on a cohort of 92 adolescents aged 17 to 18. Measurements were made by using the following instruments: Trait Emotional Intelligence Adolescent Short Form (TEIQue-ASF); Behaviour Assessment System for Children, Second Edition (BASC-2); Teacher Rating Scales (TRS, BASC-T3); and Self Report of Personality (SRP, BASC-S3). The study followed a quasi-experimental design, with pre-test/post-test repeated measurements and with a control group. To assess the impact of the programme, a descriptive (average and standard deviations) analysis and an analysis of variance (ANOVAs) was carried out on the experimental and control cohort at the pre-test stage, as well as a descriptive and covariance analysis of the post-test scores (ANCOVA post-test with the pre-test co-variants). Moreover, the effect size was evaluated with the “d” of Cohen. The results confirm the significant differences in trait emotional intelligence, overall behaviour, problem externalization, adaptive skills and personal adjustment as a result of the programme implemented. In addition, the results of the ANCOVA post-test show that the changes stimulated by the programme were similar in both sexes. Accordingly, this study experimentally validates an effective intervention tool, emphasizing the importance of implementing programmes aimed at encouraging emotional intelligence throughout adolescence.
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- 2019
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20. Understanding plant responses to stress conditions: redox-based strategies
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Luisa M. Sandalio, Frank Van Breusegem, Francisco Javier Cejudo, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, Ministerio de Ciencia e Innovación (MICIN). España, and Ministerio de Ciencia e Innovación (España)
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Physiology ,plant acclimation ,Plant Science ,eXtra Botany ,medicine.disease_cause ,Redox ,redox regulation ,chemistry.chemical_compound ,reactive sulfur species ,medicine ,oxidative stress ,Cysteine ,Reactive nitrogen species ,Reactive sulfur species ,chemistry.chemical_classification ,reactive oxygen species ,Reactive oxygen species ,AcademicSubjects/SCI01210 ,Special Issue Editorial ,Plants ,reactive nitrogen species ,chemistry ,Oxidative stress ,Redox regulation ,Biophysics ,Plant acclimation ,Stress conditions ,Oxidation-Reduction - Abstract
Plant acclimation to environmental conditions involves multiple interactions between hormones and other signaling molecules. A lot of attention has been devoted to the signaling function of reactive oxygen species and their relationships to thiol-dependent redox regulations. Recently, new developments in proteomic techniques have revealed the relevant signaling effect of reactive nitrogen species and reactive sulfur species. Together, they cause post-translational modifications in proteins that participate in signaling networks, such as those responding to hormones, allowing the rapid response of plants to environmental cues., This work was supported by Ministerio Español de Ciencia e Innovación Grant RED2018-102397-T
- Published
- 2021
21. Redox regulation of chloroplast metabolism
- Author
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María-Cruz González, Francisco Javier Cejudo, Juan Manuel Pérez-Ruiz, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, and Ministerio de Economía y Competitividad (España)
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0106 biological sciences ,Chloroplasts ,Physiology ,Mutant ,Plant Science ,01 natural sciences ,Redox ,Focus Issue on Plant Redox Biology ,03 medical and health sciences ,Arabidopsis ,Genetics ,Arabidopsis thaliana ,Ferredoxin ,030304 developmental biology ,0303 health sciences ,biology ,Chemistry ,food and beverages ,Plants ,biology.organism_classification ,Cell biology ,Chloroplast ,Light intensity ,Peroxiredoxin ,Oxidation-Reduction ,010606 plant biology & botany - Abstract
Regulation of enzyme activity based on thiol-disulfide exchange is a regulatory mechanism in which the protein disulfide reductase activity of thioredoxins (TRXs) plays a central role. Plant chloroplasts are equipped with a complex set of up to 20 TRXs and TRX-like proteins, the activity of which is supported by reducing power provided by photosynthetically reduced ferredoxin (FDX) with the participation of a FDX-dependent TRX reductase (FTR). Therefore, the FDX–FTR–TRXs pathway allows the regulation of redox-sensitive chloroplast enzymes in response to light. In addition, chloroplasts contain an NADPH-dependent redox system, termed NTRC, which allows the use of NADPH in the redox network of these organelles. Genetic approaches using mutants of Arabidopsis (Arabidopsis thaliana) in combination with biochemical and physiological studies have shown that both redox systems, NTRC and FDX-FTR-TRXs, participate in fine-tuning chloroplast performance in response to changes in light intensity. Moreover, these studies revealed the participation of 2-Cys peroxiredoxin (2-Cys PRX), a thiol-dependent peroxidase, in the control of the reducing activity of chloroplast TRXs as well as in the rapid oxidation of stromal enzymes upon darkness. In this review, we provide an update on recent findings regarding the redox regulatory network of plant chloroplasts, focusing on the functional relationship of 2-Cys PRXs with NTRC and the FDX–FTR–TRXs redox systems for fine-tuning chloroplast performance in response to changes in light intensity and darkness. Finally, we consider redox regulation as an additional layer of control of the signaling function of the chloroplast.
- Published
- 2021
22. Impact of the moon physical education program on the socio-emotional competencies of preadolescents
- Author
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Juan Carlos Pérez-González, Javier Cejudo, José A. Piqueras, Miriam Bajo, Pablo Luna, and Débora Rodrigo-Ruiz
- Subjects
Health, Toxicology and Mutagenesis ,Emotions ,Psychological intervention ,medicine.disease_cause ,Article ,Emotional education ,Physical education ,03 medical and health sciences ,0302 clinical medicine ,Intervention (counseling) ,medicine ,Humans ,Scopus ,Moon ,Students ,intervention ,child ,Physical Education and Training ,05 social sciences ,Socio emotional ,Theory of multiple intelligences ,Public Health, Environmental and Occupational Health ,050301 education ,Mean age ,030229 sport sciences ,Perfectionism (psychology) ,emotional education ,social and emotional learning ,Self Efficacy ,physical education ,JCR ,adolescent ,Medicine ,Psychology ,0503 education ,Clinical psychology - Abstract
Few studies have analyzed emotional educational experiences through physical education interventions. The objective of this study was to evaluate the effects on socio-emotional competencies of a physical education intervention (i.e., the MooN program) based on the instructional model known as the sports education model (SEM), compared to a physical education intervention based on the traditional model of direct instruction (TM-DI) in preadolescents. The sample consisted of 170 students between 10 and 13 years old (mean age: M = 10.76, standard deviation: SD = 0.73). Participants were randomly assigned to the experimental group (SEM, n = 87) and the active control group (TM-DI, n = 83). In the experimental group, the SEM-based intervention was applied, while in the active control group, an intervention based on the TM-DI was developed. A quasi-experimental design with repeated pre-test and post-test measures and an active control group was used. The self-efficacy inventory for multiple intelligences (IAMI-40) was used to assess the children’s socio-emotional competencies. The child perfectionism inventory was applied to evaluate the self-demand perfectionist efforts. The results confirmed that the MooN program (SEM intervention) promoted significant improvements in socio-emotional competencies. These findings support the potential of this physical education instructional model as an emotional education pathway for the socio-emotional improvement of preadolescent students.
- Published
- 2021
- Full Text
- View/download PDF
23. Chloroplast Lipids Metabolism and Function. A Redox Perspective
- Author
-
M. Luisa Hernández, Francisco Javier Cejudo, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, Ministerio de Ciencia e Innovación (MICIN). España, and Agencia Estatal de Investigación. España
- Subjects
0106 biological sciences ,0301 basic medicine ,Mini Review ,Plant Science ,Photosynthesis ,Chloroplast ,01 natural sciences ,SB1-1110 ,redox regulation ,03 medical and health sciences ,chloroplast ,lipid ,Organelle ,membrane ,Ferredoxin ,Photosystem ,Chemistry ,Membrane ,Plant culture ,food and beverages ,Lipid metabolism ,Lipid ,ferredoxin ,Fatty acid ,030104 developmental biology ,Redox regulation ,Thylakoid ,Biophysics ,fatty acid ,010606 plant biology & botany ,Chloroplast thylakoid membrane - Abstract
lant productivity is determined by the conversion of solar energy into biomass through oxygenic photosynthesis, a process performed by protein-cofactor complexes including photosystems (PS) II and I, and ATP synthase. These complexes are embedded in chloroplast thylakoid membrane lipids, which thus function as structural support of the photosynthetic machinery and provide the lipid matrix to avoid free ion diffusion. The lipid and fatty acid composition of thylakoid membranes are unique in chloroplasts and cyanobacteria, which implies that these molecules are specifically required in oxygenic photosynthesis. Indeed, there is extensive evidence supporting a relevant function of glycerolipids in chloroplast biogenesis and photosynthetic efficiency in response to environmental stimuli, such as light and temperature. The rapid acclimation of higher plants to environmental changes is largely based on thiol-based redox regulation and the disulphide reductase activity thioredoxins (Trxs), which are reduced by ferredoxin (Fdx) via an Fdx-dependent Trx reductase. In addition, chloroplasts harbour an NADPH-dependent Trx reductase C, which allows the use of NADPH to maintain the redox homeostasis of the organelle. Here, we summarise the current knowledge of chloroplast lipid metabolism and the function of these molecules as structural basis of the complex membrane network of the organelle. Furthermore, we discuss evidence supporting the relevant role of lipids in chloroplast biogenesis and photosynthetic performance in response to environmental cues in which the redox state of the organelle plays a relevant role.
- Published
- 2021
24. Chloroplast dismantling in leaf senescence
- Author
-
Francisco Javier Cejudo, Fernando Domínguez, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, and Ministerio de Economia, Industria y Competitividad (MINECO). España
- Subjects
Senescence ,autophagy ,plastoglobule ,Chloroplasts ,senescence ,Physiology ,Plastoglobule ,Plant Development ,Plant Science ,Gerontoplast ,Biology ,Photosynthesis ,chloroplast ,Stress, Physiological ,Autophagy ,Review Papers ,chemistry.chemical_classification ,Reactive oxygen species ,gerontoplast ,AcademicSubjects/SCI01210 ,chlorophagy ,food and beverages ,ROS ,Plant cell ,Cell biology ,Chloroplast ,chemistry ,Reactive Oxygen Species ,Function (biology) - Abstract
In photosynthetic plant cells, chloroplasts act as factories of metabolic intermediates that support plant growth. Chloroplast performance is highly influenced by environmental cues. Thus, these organelles have the additional function of sensing ever changing environmental conditions, thereby playing a key role in harmonizing the growth and development of different organs and in plant acclimation to the environment. Moreover, chloroplasts constitute an excellent source of metabolic intermediates that are remobilized to sink tissues during senescence so that chloroplast dismantling is a tightly regulated process that plays a key role in plant development. Stressful environmental conditions enhance the generation of reactive oxygen species (ROS) by chloroplasts, which may lead to oxidative stress causing damage to the organelle. These environmental conditions trigger mechanisms that allow the rapid dismantling of damaged chloroplasts, which is crucial to avoid deleterious effects of toxic by-products of the degradative process. In this review, we discuss the effect of redox homeostasis and ROS generation in the process of chloroplast dismantling. Furthermore, we summarize the structural and biochemical events, both intra- and extraplastid, that characterize the process of chloroplast dismantling in senescence and in response to environmental stresses., Chloroplast dismantling is a complex process involving intra- and extraplastid events essential for remobilizing metabolic intermediates in senescence, and for eliminating damaged plastids caused by stressful environmental conditions.
- Published
- 2021
25. EL PAPEL DE LA INTELIGENCIA EMOCIONAL EN EL AFRONTAMIENTO RESILIENTE Y LA SATISFACCIÓN CON LA VIDA EN DOCENTES
- Author
-
Manuel Javier Cejudo, Mario Pena, Pablo Luna, and Alba Rodríguez-Donaire
- Subjects
Emotional intelligence ,Positive relationship ,Life satisfaction ,Psychology ,Humanities - Abstract
espanolEl presente estudio tuvo como finalidad analizar la relacion existente entre inteligencia emocional rasgo, afrontamiento resiliente y satisfaccion con la vida en una muestra de docentes. La muestra estuvo compuesta por 195 docentes, siendo el 68% profesoras, con edades comprendidas entre los 25 y los 65 anos (M = 47.84; DT = 9.61). El diseno del estudio fue de caracter descriptivo y correlacional. Los instrumentos de evaluacion han sido: para evaluar la inteligencia emocional rasgo el cuestionario Trait Emotional Intelligence Questionnaire–Short Form (TEIQue-SF), para evaluar el afrontamiento resiliente la escala Brief Resilient Coping Scale (BRCS) y para evaluar la satisfaccion con la vida la escala Satisfaction With Life Scale (SWLS). Los resultados muestran que IE rasgo presenta una relacion positiva con afrontamiento resiliente y satisfaccion con la vida. Ademas, no existen diferencias significativas en funcion del genero en ninguna de las variables. Por ultimo, los resultados evidenciaron la influencia de la inteligencia emocional rasgo en afrontamiento resiliente y satisfaccion con la vida en docentes. EnglishThe purpose of this research is to analyze the relationship between trait emotional intelligence, resilient coping and life satisfaction in a sample among teachers. The sample was composed of 195 teachers, 68% of whom were women, aged between 25 and 65 years (M = 47.84; SD = 9.61). The study design was descriptive and correlational. The evaluation instruments were the following: to evaluate la trait emotional intelligence the Trait Emotional Intelligence Questionnaire-Short Form (TEIQue-SF); to evaluate resi-lient coping the Brief Resilient Scale (BRCS) and to assess life satisfaction the Satisfaction With Life Scale (SWLS). The results show that trait IE presents a positive relationship with resilient coping and life satisfaction. Moreover, there are no significant differences in terms of gender, in any of the variables. To conclude, the results showed the influence of trait emotional intelligence on resilient coping and life satisfaction in teachers.
- Published
- 2020
- Full Text
- View/download PDF
26. Social Competence and Peer Social Acceptance: Evaluating Effects of an Educational Intervention in Adolescents
- Author
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Javier Cejudo, Débora Rodrigo-Ruiz, Lidia Losada, Jerónimo Guerrero, and Pablo Luna
- Subjects
sport education model ,lcsh:BF1-990 ,Scopus ,Poison control ,Suicide prevention ,050105 experimental psychology ,Occupational safety and health ,03 medical and health sciences ,0302 clinical medicine ,Intervention (counseling) ,Injury prevention ,gender ,Psychology ,0501 psychology and cognitive sciences ,adolescents ,General Psychology ,Original Research ,peer social acceptance ,social competence ,05 social sciences ,Human factors and ergonomics ,lcsh:Psychology ,quality physical education ,Social competence ,030217 neurology & neurosurgery ,Clinical psychology - Abstract
This study aims to evaluate the impact of an educational intervention on social competence and social acceptance among adolescents. The participants were 106 adolescents aged 12-15 years (M = 13.41 years; SD = 0.81 years). Participants were randomly assigned to the control group (n = 44) and an experimental group (n = 69). In the experimental group, an intervention based on the Sport Education Model (SEM) was applied. While in the control group, an intervention based on the Traditional Model of Direct Instruction (TM-DI) was carried out. An experimental design with repeated pretest and posttest measurements was developed. The Adolescent Multidimensional Social Competence Questionnaire (AMSC-Q) was used to assess social competence. The Guess Who (GW4) questionnaire was used to assess social acceptance (SA) among peers. The preliminary results obtained in this investigation showed that the intervention based on the SEM (experimental group) promoted greater improvements in some indicators of social competence and social acceptance among peers than those obtained with the TM-DI (control group). Furthermore, the results confirm a similar impact of the intervention between boys and girls. It is also relevant to note that these findings highlight the efficacy, feasibility, and suitability of this educational intervention with adolescents.
- Published
- 2020
- Full Text
- View/download PDF
27. Subjective Well-Being and Psychosocial Adjustment: Examining the Effects of an Intervention Based on the Sport Education Model on Children
- Author
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Javier Cejudo, Alba Rodríguez-Donaire, Pablo Luna, and Débora Rodrigo-Ruiz
- Subjects
Education intervention ,sport education model ,Geography, Planning and Development ,lcsh:TJ807-830 ,lcsh:Renewable energy sources ,Management, Monitoring, Policy and Law ,Physical education ,Child and adolescent ,03 medical and health sciences ,0302 clinical medicine ,children ,Intervention (counseling) ,medicine ,Subjective well-being ,lcsh:Environmental sciences ,lcsh:GE1-350 ,Renewable Energy, Sustainability and the Environment ,lcsh:Environmental effects of industries and plants ,05 social sciences ,050301 education ,psychosocial adjustment ,030229 sport sciences ,physical education ,lcsh:TD194-195 ,subjective well-being ,Scale (social sciences) ,Anxiety ,medicine.symptom ,Psychology ,0503 education ,Psychosocial ,Clinical psychology - Abstract
The current study aims to evaluate the effectiveness of an intervention based on the Sport Education model, compared to an intervention based on the traditional model of Direct Instruction in children. The intervention was carried out during school hours for 18 sessions of 50-min each. The sample was made up of 146 children aged 10–12 years (M = 10.78 years; SD = 1.07 years). Participants were randomly assigned to the experimental group (n = 87) and a control group (n = 59). A quasi-experimental design with repeated pretest and posttest evaluations with the control group was implemented. The Positive and Negative Affect Scale for children and adolescents (PANASN) was used to assess the affective component of subjective well-being. The Child and Adolescent Behavior Assessment System (BASC) was used to assess psychosocial adjustment. The results showed significant improvements in the affective component of subjective well-being and a reduction in anxiety in favor of the experimental group. Our current results show the methodological and practical efficacy of a Sport Education intervention.
- Published
- 2020
28. Disruption of CYCLOPHILIN 38 function reveals a photosynthesis-dependent systemic signal controlling lateral root emergence
- Author
-
José R. Dinneny, Juan Manuel Pérez-Ruiz, Lina Duan, and Francisco Javier Cejudo
- Subjects
Chloroplast ,chemistry.chemical_classification ,chemistry ,Photosystem II ,Auxin ,Lateral root ,Shoot ,Mutant ,food and beverages ,Root system ,Photosynthesis ,Cell biology - Abstract
Photosynthesis in leaves generates the fixed-carbon resources and essential metabolites that support sink tissues, such as roots [1]. One of these products, sucrose, is known to promote primary root growth, but it is not clear what other molecules may be involved and whether other stages of root system development are affected by photosynthate levels [2]. Through a mutant screen to identify pathways regulating root system architecture, we identified a mutation in the CYCLOPHILIN 38 (CYP38) gene, which causes an accumulation of pre-emergent stage lateral roots, with a minor effect on primary root growth. CYP38 was previously reported to maintain the stability of Photosystem II (PSII) in chloroplasts [3]. CYP38 expression is enriched in the shoot and grafting experiments show that the gene acts non-cell autonomously to promote lateral root emergence. Growth of wild-type plants under low light conditions phenocopied the cyp38 lateral root emergence phenotype as did the inhibition of PSII-dependent electron transport or NADPH production. Importantly, the cyp38 root phenotype is not rescued by exogenous sucrose, suggesting the involvement of another metabolite. Auxin (IAA) is an essential hormone promoting root growth and its biosynthesis from tryptophan is dependent on reductant generated during photosynthesis [4,5]. Both WT seedlings grown under low light and cyp38 mutants have highly diminished levels of IAA in root tissues. The cyp38 lateral root defect is rescued by IAA treatment, revealing that photosynthesis promotes lateral root emergence partly through IAA biosynthesis. Metabolomic profiling shows that the accumulation of several defense-related metabolites are also photosynthesis-dependent, suggesting that the regulation of a number of energy-intensive pathways are down-regulated when light becomes limiting.
- Published
- 2020
- Full Text
- View/download PDF
29. Reliable and Low-Power Communications System Based on IR-UWB for Offshore Wind Turbines
- Author
-
Aitor Guisasola, Ainhoa Cortés, Javier Cejudo, Astrid da Silva, Markos Losada, and Paul Bustamante
- Subjects
Computer Networks and Communications ,Hardware and Architecture ,Control and Systems Engineering ,harsh environment ,low power consumption ,wireless sensor network ,IR-UWB ,offshore wind turbines ,Signal Processing ,Electrical and Electronic Engineering - Abstract
In this paper, we propose the design of a low-power wireless sensor network architecture that enables robust communications inside offshore wind turbines. This research work is in the scope of the WATEREYE EU Project, where we have designed a corrosion monitoring solution to work unattended. The architecture is composed of several fixed sensor nodes, one mobile sensor node, several anchors and the WATEREYE Computer (WEC). Our approach is based on Impulse Radio Ultra wideband (IR-UWB) technology offering reliable and low-power communications in these harsh environments. On top of that, we propose a double star network using two UWB channels for the following purposes: one network for communications to send the sensor data and another one for ranging estimations to calculate the indoor positioning of the mobile sensor node. The power strategies applied to our system, at Hardware (HW) and Firmware (FW) levels, are described in detail. Furthermore, we present power consumption measurements obtaining the power profiles and the autonomy of the most important components of the proposed architecture supplied by battery. On the other hand, we describe the methodology to analyze the range, reliability and continuity of the two UWB links providing the packet loss and gaps as a function of distance. The proposed communications system has been validated in three different scenarios considering two of them very hostile environments. Furthermore, one of the scenarios is a real offshore wind turbine.
- Published
- 2022
- Full Text
- View/download PDF
30. Effects of a programme to improve emotional intelligence on psychosocial adjustment and academic performance in primary education /Efectos de un programa de mejora de la inteligencia emocional sobre el ajuste psicosocial y el rendimiento académico en educación primaria
- Author
-
Javier Cejudo
- Subjects
Emotional intelligence ,education ,05 social sciences ,Primary education ,Repeated measures design ,050109 social psychology ,050105 experimental psychology ,Education ,Developmental psychology ,Developmental and Educational Psychology ,0501 psychology and cognitive sciences ,Psychology ,Psychosocial ,Clinical psychology - Abstract
The present study aims to design, develop and evaluate the impact of a programme to improve the emotional intelligence (PIEI) of sixth-year primary education students’ psychosocial adjustment and academic performance. A quasi-experimental, pretest-posttest design of repeated measures with a control group is used. This study includes 123 student participants, out of which 55 students (44.72%) are assigned to the control group and 68 (55.28%) to the experimental group. The PIEI is based on the model of emotional intelligence, which consists of eight 50-minute sessions. The results confirm that the PIEI stimulates significant improvement in psychosocial adjustment and overall academic performance in the experimental groups. These results suggest that EI programmes can be effective in promoting psychosocial adjustment and improving primary students’ academic performance. The implications of these findings are discussed and recommendations for future research are made.
- Published
- 2017
- Full Text
- View/download PDF
31. Effect of a Programme to Enhance Proficiency in Linguistic Competence in Secondary Education
- Author
-
Javier Cejudo, Débora Rodrigo-Ruiz, and José Vicente Salido-López
- Subjects
Secondary education ,media_common.quotation_subject ,05 social sciences ,050109 social psychology ,Mean age ,General Medicine ,Inductive reasoning ,Linguistic intelligence ,Linguistic competence ,Developmental psychology ,050106 general psychology & cognitive sciences ,0501 psychology and cognitive sciences ,Aptitude ,Psychology ,Control (linguistics) ,media_common - Abstract
The present article aims to evaluate the effects of a programme to enhance proficiency in linguistic competence in verbal aptitude, inductive reasoning, academic performance, self-efficiency in linguistic intelligence and linguistic competence. For this aim, a quasi-experimental study was designed with repeated measurements and a control group. A total of 204 participants were taken from second year secondary schoolchildren (51.47% girls) with a mean age of 12.48 years ( SD = 1.48). The results showed that the programme stimulated a significant improvement in language skills, academic performance, linguistic intelligence self-efficacy, as well as linguistic competence, in the experimental groups.
- Published
- 2017
- Full Text
- View/download PDF
32. Promoting Social and Emotional Learning and Subjective Well-Being: Impact of the 'Aislados' Intervention Program in Adolescents
- Author
-
Lidia Losada, Roberto Feltrero, and Javier Cejudo
- Subjects
Multivariate analysis ,TheoryofComputation_COMPUTATIONBYABSTRACTDEVICES ,Adolescent ,Health, Toxicology and Mutagenesis ,Emotions ,Child Welfare ,lcsh:Medicine ,Health Promotion ,050105 experimental psychology ,Article ,video game ,Quality of life (healthcare) ,Multivariate analysis of variance ,well-being ,secondary education ,Humans ,0501 psychology and cognitive sciences ,gamification ,Subjective well-being ,Child ,Video game ,Emotional intelligence ,05 social sciences ,lcsh:R ,Public Health, Environmental and Occupational Health ,ComputingMilieux_PERSONALCOMPUTING ,050301 education ,social and emotional learning ,Mental health ,Social Learning ,Mental Health ,Video Games ,Spain ,Well-being ,Quality of Life ,adolescence ,Psychology ,0503 education ,Clinical psychology - Abstract
The aim of this study is to experimentally assess the effects of an intervention program through a video game called &ldquo, Aislados&rdquo, for the improvement of subjective well-being, mental health and trait emotional intelligence of a sample of adolescents (n = 187). We used well-established measures with appropriate psychometric properties. The study used a quasi-experimental design of pre-test/post-test repeated measurements with a control group. First, a multivariate analysis of variance (MANOVA) and then descriptive analyses and variance analyses (ANOVAs) were carried out by the adolescents randomly assigned to the experimental and control conditions. Then, a multivariate analysis of covariance (MANCOVA) was performed on the study&rsquo, s variables as a whole. Descriptive and covariance analyses of the post-test scores were carried out (ANCOVAs post-test, co-varying pre-test scores), in order to demonstrate the impact of the program. The effect size was reckoned (Cohen&rsquo, s d). The results confirm statistically-significant differences in: Health-Related Quality of life, positive affect and mental health. The study provides an effective intervention tool which has been experimentally validated. The overall results allow for emphasizing the importance of the implementation of programs aimed at encouraging social and emotional learning throughout adolescence as protective resources in fostering emotional and behavioral adjustment in adolescents.
- Published
- 2020
33. Disruption of CYCLOPHILIN 38 Function Reveals a Photosynthesis-Dependent Systemic Signal Controlling Lateral Root Emergence
- Author
-
Lina Duan, José R. Dinneny, Francisco Javier Cejudo, and Juan Manuel Pérez-Ruiz
- Subjects
Chloroplast ,chemistry.chemical_classification ,Photosystem II ,Chemistry ,Auxin ,Lateral root ,Mutant ,Shoot ,food and beverages ,Root system ,Photosynthesis ,Cell biology - Abstract
Photosynthesis in leaves generates the fixed-carbon resources and essential metabolites that support sink tissues, such as roots. One of these products, sucrose, is known to promote primary root growth, but it is not clear what other molecules may be involved and whether other stages of root system development are affected by photosynthate levels. Through a mutant screen to identify pathways regulating root system architecture, we identified a mutation in the CYCLOPHILIN 38 (CYP38) gene, which causes an accumulation of pre-emergent stage lateral roots, with a minor effect on primary root growth. CYP38 was previously reported to maintain the stability of Photosystem II (PSII) in chloroplasts. CYP38 expression is enriched in the shoot and grafting experiments show that the gene acts non-cell autonomously to promote lateral root emergence. Growth of wild-type plants under low light conditions phenocopied the cyp38 lateral root emergence phenotype as did the inhibition of PSII-dependent electron transport or NADPH production. Importantly, the cyp38 root phenotype is not rescued by exogenous sucrose, suggesting the involvement of another metabolite. Auxin (IAA) is an essential hormone promoting root growth and its biosynthesis from tryptophan is dependent on reductant generated during photosynthesis. Both WT seedlings grown under low light and cyp38 mutants have highly diminished levels of IAA in root tissues. The cyp38 lateral root defect is rescued by IAA treatment, revealing that photosynthesis promotes lateral root emergence partly through IAA biosynthesis. Metabolomic profiling shows that the accumulation of several defense-related metabolites are also photosynthesis-dependent, suggesting that the regulation of a number of energy-intensive pathways are down-regulated when light becomes limiting.
- Published
- 2020
- Full Text
- View/download PDF
34. Exploring the Functional Relationship between y-Type Thioredoxins and 2-Cys Peroxiredoxins in Arabidopsis Chloroplasts
- Author
-
Leonor Puerto-Galán, Francisco Javier Cejudo, Ana Jurado-Flores, Juan Manuel Pérez-Ruiz, Víctor Delgado-Requerey, Alicia Gálvez-Ramírez, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
- Subjects
0106 biological sciences ,0301 basic medicine ,Gene isoform ,Physiology ,Clinical Biochemistry ,Mutant ,thioredoxin y ,Thioredoxin r ,01 natural sciences ,Biochemistry ,Chloroplast ,2-Cys peroxiredoxin ,03 medical and health sciences ,Arabidopsis ,Thioredoxin x ,thioredoxin x ,Thioredoxin y ,NTRC ,Photosynthesis ,Molecular Biology ,Ferredoxin ,chemistry.chemical_classification ,biology ,Chemistry ,Stress response ,lcsh:RM1-950 ,Cell Biology ,Metabolism ,biology.organism_classification ,Phenotype ,Cell biology ,030104 developmental biology ,Enzyme ,lcsh:Therapeutics. Pharmacology ,Redox regulation ,010606 plant biology & botany - Abstract
Thioredoxins (Trxs) are small, ubiquitous enzymes that catalyze disulphide–dithiol interchange in target enzymes. The large set of chloroplast Trxs, including f, m, x and y subtypes, use reducing equivalents fueled by photoreduced ferredoxin (Fdx) for fine-tuning photosynthetic performance and metabolism through the control of the activity of redox-sensitive proteins. Although biochemical analyses suggested functional diversity of chloroplast Trxs, genetic studies have established that deficiency in a particular Trx subtype has subtle phenotypic e ects, leading to the proposal that the Trx isoforms are functionally redundant. In addition, chloroplasts contain an NADPH-dependent Trx reductase with a joint Trx domain, termed NTRC. Interestingly, Arabidopsis mutants combining the deficiencies of x- or f-type Trxs and NTRC display very severe growth inhibition phenotypes, which are partially rescued by decreased levels of 2-Cys peroxiredoxins (Prxs). These findings indicate that the reducing capacity of Trxs f and x is modulated by the redox balance of 2-Cys Prxs, which is controlled by NTRC. In this study, we explored whether NTRC acts as a master regulator of the pool of chloroplast Trxs by analyzing its functional relationship with Trxs y. While Trx y interacts with 2-Cys Prxs in vitro and in planta, the analysis of Arabidopsis mutants devoid of NTRC and Trxs y suggests that Trxs y have only a minor e ect, if any, on the redox state of 2-Cys Prxs.
- Published
- 2020
35. Using a Mindfulness-Based Intervention to Promote Subjective Well-Being, Trait Emotional Intelligence, Mental Health, and Resilience in Women With Fibromyalgia
- Author
-
Francisco-Javier García-Castillo, Roberto Feltrero, Pablo Luna, Débora Rodrigo-Ruiz, Javier Cejudo, and Alfonso Moreno-Gómez
- Subjects
Analysis of covariance ,mindfulness ,Mindfulness ,Multivariate analysis ,Emotional intelligence ,lcsh:BF1-990 ,Repeated measures design ,Mental health ,lcsh:Psychology ,subjective well-being ,Multivariate analysis of variance ,Psychology ,fibromyalgia ,random assignment ,Subjective well-being ,chronic pain ,General Psychology ,Original Research ,Clinical psychology - Abstract
The objective of the present study was to experimentally assess the effects of a mindfulness-based intervention (MBI) for the improvement of subjective well-being, trait emotional intelligence (TEI), mental health, and resilience in a sample of women with fibromyalgia (FM). The sample consisted of 104 women, between 29 and 77 years old (M = 47.59; SD = 5.93). The measures used were as follows: Satisfaction with Life Scale (SWLS), Positive and Negative Affection Scale (PANAS), Trait Emotional Intelligence Questionnaire Short Form (TEIQue-SF), Mental Health Questionnaire (MH-5), and Resilience Scale (ER-14). A quasi-experimental design of repeated measures with a control group (CG) was used: before and after the application of the treatment and a follow-up assessment 6 months after the completion of the intervention. In order to assess the effect of the program, the participants were randomly assigned to the experimental and control conditions. In the pretest evaluation, a multivariate analysis of variance (MANOVA) and analysis of variance (ANOVA) were carried out. In the post-test evaluation, a multivariate analysis of covariance (MANCOVA) of the study variables as a whole was performed. Then, descriptive analyses and analysis of covariance (ANCOVA) of the post-test scores (covariate pretest score) were performed. In the follow-up evaluation, a MANCOVA of the study variables as a whole was performed. Then, descriptive and ANCOVA analyses of the follow-up scores (covariate pretest score) were performed. In addition, the effect size was calculated using partial eta-squared (μ2). The post-test results confirmed statistically significant differences in satisfaction with life (SWL), positive affect (PA), mental health, and resilience. The follow-up results showed statistically significant differences in SWL, PA, TEI, mental health, and resilience. The study provides an effective intervention tool that has been validated experimentally. The general results allow the emphasis of the importance of the implementation of MBIs framed in non-pharmacological treatments in FM.
- Published
- 2019
- Full Text
- View/download PDF
36. Improving Adolescents’ Subjective Well-Being, Trait Emotional Intelligence and Social Anxiety through a Programme Based on the Sport Education Model
- Author
-
Javier Cejudo, Pablo Luna, and Jerónimo Guerrero
- Subjects
Male ,sport education model ,Adolescent ,Health, Toxicology and Mutagenesis ,media_common.quotation_subject ,Applied psychology ,lcsh:Medicine ,Anxiety ,Article ,Physical education ,03 medical and health sciences ,0302 clinical medicine ,Quality of life (healthcare) ,trait emotional intelligence ,Humans ,Quality (business) ,Subjective well-being ,Child ,Students ,media_common ,Emotional Intelligence ,Emotional intelligence ,lcsh:R ,05 social sciences ,Perspective (graphical) ,Social anxiety ,Public Health, Environmental and Occupational Health ,050301 education ,030229 sport sciences ,social and emotional learning ,physical education ,subjective well-being ,Adolescent Behavior ,Spain ,Trait ,Quality of Life ,Female ,social anxiety ,Psychology ,human activities ,0503 education ,Sports - Abstract
This study aimed to evaluate the impact of a physical-sport education pilot programme on adolescents&rsquo, subjective well-being (health-related quality of life, positive affect and negative affect), trait emotional intelligence and social anxiety. The programme was based on the pedagogical sport education model within a quality physical education framework, and approached from the perspective of social and emotional learning. Participants were 113 compulsory secondary education students aged 12&ndash, 15 years that were assigned to a control group (n = 44) and an experimental group (n = 69). A quasi-experimental design with repeated pre-test and post-test measures was used. Bonferroni correction was applied for multiple comparisons. The preliminary results obtained in this investigation revealed that the physical-sport education pilot programme promoted significant improvements in a specific indicator of subjective well-being and trait emotional intelligence in the experimental group. These encouraging findings support the pedagogical efficiency of the programme with regard to the programme aim. The findings also highlight the feasibility and appropriateness of the programme in terms of an innovative teaching proposal.
- Published
- 2019
37. Impact of the Body Mass Index on Affective Development in Physical Education
- Author
-
Jesús Manuel Martínez-González, Guillermo F. López-Sánchez, Javier Cejudo, and Pedro Gil-Madrona
- Subjects
obesity ,Geography, Planning and Development ,lcsh:TJ807-830 ,Primary education ,lcsh:Renewable energy sources ,030204 cardiovascular system & hematology ,Management, Monitoring, Policy and Law ,Overweight ,emotions ,Developmental psychology ,Physical education ,03 medical and health sciences ,0302 clinical medicine ,physical education ,students ,primary education ,Intervention (counseling) ,medicine ,lcsh:Environmental sciences ,lcsh:GE1-350 ,Renewable Energy, Sustainability and the Environment ,lcsh:Environmental effects of industries and plants ,030229 sport sciences ,medicine.disease ,Obesity ,Educational research ,lcsh:TD194-195 ,Positive and Negative Affect Schedule ,medicine.symptom ,Psychology ,Body mass index - Abstract
The purpose of this study is to show the results and the transcendental conclusions about various kinds of emotions—positive or pleasant and negative or unpleasant—and their intensity as far as they are felt by students of the fifth and sixth grade of Primary Education in the area of Physical Education, comparing the emotional states according to gender and their body-mass index (BMI). The implication is to provide a new, emotional approach, which up to now has been insufficiently dealt with in educational research. The sample was composed of 786 students of the fifth and sixth grade of Primary Education from five localities in the province of Albacete (Spain). In order to assess affectivity, the version of PANAS (Positive and Negative Affect Schedule; Watson, Clark and Tellegen, 1988) was used, validated in Spanish by Sandín (2003) for use with children and teenagers (PANASN). The results showed that the scores were higher in the positive emotions than in the negative ones. In addition, the results showed significant differences among boys and girls in the Physical Education class, especially in the variables which contribute the most to the factor of positive emotions. In relation to the analysis about the differences according to the students’ BMI, it is noteworthy that in the dimension of positive emotions, all the highest average scorings are found in the students without obesity/overweight problems. With respect to the dimension of negative emotions, all the highest average scorings were found in the students with obesity/overweight problems. The results showed significant differences according to BMI among students with obesity/overweight problems and students without obesity/overweight problems in positive emotions. There were no significant differences in negative emotions. Boys as much as girls without obesity/overweight problems show more positive emotions than boys and girls with obesity/overweight problems. Intervention programmes are required, and they should include enjoyment as an essential condition for practicing sport, encouraging the development of positive affects, and diminishing the negative affects in boys and girls.
- Published
- 2019
38. Chloroplast Redox Regulatory Mechanisms in Plant Adaptation to Light and Darkness
- Author
-
Víctor Delgado-Requerey, Valle Ojeda, Maricruz González, Juan Manuel Pérez-Ruiz, Francisco Javier Cejudo, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
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0106 biological sciences ,0301 basic medicine ,hydrogen peroxide ,Plant Science ,Review ,lcsh:Plant culture ,Photosynthesis ,01 natural sciences ,Redox ,redox regulation ,03 medical and health sciences ,chloroplast ,darkness ,Organelle ,lcsh:SB1-1110 ,Ferredoxin ,photosynthesis ,Chemistry ,peroxiredoxin ,Metabolism ,thioredoxin ,Cell biology ,Chloroplast ,030104 developmental biology ,Thioredoxin ,Peroxiredoxin ,light ,010606 plant biology & botany - Abstract
Light is probably the most important environmental stimulus for plant development. As sessile organisms, plants have developed regulatory mechanisms that allow the rapid adaptation of their metabolism to changes in light availability. Redox regulation based on disulfide-dithiol exchange constitutes a rapid and reversible post-translational modification, which affects protein conformation and activity. This regulatory mechanism was initially discovered in chloroplasts when it was identified that enzymes of the Calvin-Benson cycle (CBC) are reduced and active during the day and become rapidly inactivated by oxidation in the dark. At present, the large number of redox-sensitive proteins identified in chloroplasts extend redox regulation far beyond the CBC. The classic pathway of redox regulation in chloroplasts establishes that ferredoxin (Fdx) reduced by the photosynthetic electron transport chain fuels reducing equivalents to the large set of thioredoxins (Trxs) of this organelle via the activity of a Fdx-dependent Trx reductase (FTR), hence linking redox regulation to light. In addition, chloroplasts harbor an NADPH-dependent Trx reductase with a joint Trx domain, termed NTRC. The presence in chloroplasts of this NADPH-dependent redox system raises the question of the functional relationship between NTRC and the Fdx-FTR-Trx pathways. Here, we update the current knowledge of these two redox systems focusing on recent evidence showing their functional interrelationship through the action of the thioldependent peroxidase, 2-Cys peroxiredoxin (2-Cys Prx). The relevant role of 2-Cys Prxs in chloroplast redox homeostasis suggests that hydrogen peroxide may exert a key function to control the redox state of stromal enzymes. Indeed, recent reports have shown the participation of 2-Cys Prxs in enzyme oxidation in the dark, thus providing an explanation for the long-lasting question of photosynthesis deactivation during the light-dark transition.
- Published
- 2019
39. Compendio y Análisis de Medidas de Evaluación de la Inteligencia Emocional Capacidad
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Juan Carlos Pérez-González, Javier Cejudo, and Débora Rodrigo-Ruiz
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Assessment instrument ,Persona ,Psychology ,Humanities ,General Psychology - Abstract
espanolDebido al interes que la literatura cientifica ha mostrado en la inteligencia emocional y los beneficios que esta parece aportar sobre diferentes areas de la persona, el presente trabajo realiza una recopilacion y analisis de los diferentes instrumentos de evaluacion de la inteligencia emocional capacidad hallados tras una revision selectiva de la literatura. Se analizan las propiedades psicometricas y las caracteristicas distintivas de cada uno de los instrumentos localizados teniendo en cuenta su adecuacion a la m edicion del constructo. Se concluye que, a pesar de la aparente diversidad de pruebas, el desarrollo de instrumentos de evaluacion de la inteligencia emocional capacidad con garantias psicometricas se encuentra aun en un periodo inicial. EnglishDue to the interest that the scientific literature has shown in emotional intelligence and the benefits that it seems to produce in different vital areas , this work compiles and analyses the different instruments for measuring the ability emotional intelligence found after a selective review of the literature. The psychometric properties and the distinctive features of each one of the found instruments are analysed ta king into account their adequacy to the assessment of the construct. It is concluded that, despite the apparent diversity of instruments, the development of ability emotional intelligence assessment instruments with psychometric guarantees is still in an initial period.
- Published
- 2019
- Full Text
- View/download PDF
40. A chloroplast redox relay adapts plastid metabolism to light and affects cytosolic protein quality control.
- Author
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Ojeda, Valle, Jiménez-López, Julia, José Romero-Campero, Francisco, Javier Cejudo, Francisco, and Manuel Pérez-Ruiz, Juan
- Published
- 2021
- Full Text
- View/download PDF
41. A Flexible Fog Computing Design for Low-Power Consumption and Low Latency Applications
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Javier Cejudo, A. Cortes, Alejandro Pérez, A. Irizar, and Markos Losada
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Power management ,Computer Networks and Communications ,Computer science ,lcsh:TK7800-8360 ,Cloud computing ,02 engineering and technology ,computer.software_genre ,LoRa ,IoT gateway ,edge computing ,Default gateway ,0202 electrical engineering, electronic engineering, information engineering ,Wireless ,Electrical and Electronic Engineering ,Latency (engineering) ,low power consumption ,Edge computing ,smart port ,business.industry ,Firmware ,WiFi ,harsh environment ,cloud computing ,lcsh:Electronics ,020208 electrical & electronic engineering ,020206 networking & telecommunications ,low latency ,Hardware and Architecture ,Control and Systems Engineering ,Sensor node ,Signal Processing ,flexible ,fog computing ,business ,computer ,Computer network - Abstract
In this paper, we propose a flexible Fog Computing architecture in which the main features are that it allows us to select among two different communication links (WiFi and LoRa) on the fly and offers a low-power solution, thanks to the applied power management strategies at hardware and firmware level. The proposed Fog Computing architecture is formed by sensor nodes and an Internet of Things (IoT) gateway. In the case of LoRa, we have the choice of implementing the LoRaWAN and Application servers on the cloud or on the IoT gateway, avoiding, in this case, to send data to the Cloud. Additionally, we have presented an specific setup and methodology with the aim of measuring the sensor node&rsquo, s power consumption and making sure there is a fair comparison between the different alternatives among the two selected wireless communication links by varying the duty cycle, the size of the payload, and the Spreading Factor (SF). This research work is in the scope of the STARPORTS Interconnecta Project, where we have deployed two sensor nodes in the offshore platform of PLOCAN,which communicate with the IoT gateway located in the PLOCAN premises. In this case, we have used LoRa communications due to the required large distance between the IoT gateway and the nodes in the offshore platform (in the range of kilometers). This deployment demonstrates that the proposed solution operates in a real environment and that it is a low-power and robust approach since it is sending data to the IoT gateway during more than one year and it continues working.
- Published
- 2020
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42. Improving Subjective Well-Being, Trait Emotional Intelligence and Social Anxiety through a Programme Based on the Sport Education Model in Adolescents
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Javier Cejudo, Pablo Luna, and Jerónimo Guerrero
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Emotional intelligence ,Social anxiety ,Trait ,Social emotional learning ,Subjective well-being ,Psychology ,education_studies ,Physical education ,Developmental psychology - Abstract
The aim of this article has been to evaluate the impact of a physical-sport education programme, based on the pedagogical model of Sport Education within the framework of quality Physical Education and approached from the field of social and emotional learning, on a set of psychological variables: subjective well-being (quality of life related to health, positive affect and negative affect); trait emotional intelligence and social anxiety. A total number of 113 Compulsory Secondary Education students were involved, aged 12 to 15 years old, 44 of whom belonged to the control group (CG) and 69 to the experimental group (EG). A quasiexperimental design of repeated pretest and posttest measures with the CG was used. The results obtained in this investigation revealed that the intervention programme caused significant improvements in the subjective well-being and the trait emotional intelligence for the EG. These findings reinforce the pedagogical efficiency of the programme with regards to the aim that has been set. Likewise, the findings also highlight the suitability and appropriateness in terms of innovative teaching proposals. In the same way, the results showed relevant empirical contributions in this given school context due to its psychological benefits and the encouragement of healthy living.
- Published
- 2019
43. NTRC Plays a Crucial Role in Starch Metabolism, Redox Balance, and Tomato Fruit Growth
- Author
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Ina Krahnert, Ina Thormählen, Alisdair R. Fernie, Matthias Ehrlich, Francisco Javier Cejudo, Peter Geigenberger, Liang-Yu Hou, Martin Lehmann, Toshihiro Obata, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
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0106 biological sciences ,Physiology ,Starch ,Plant Science ,Reductase ,Carbohydrate metabolism ,Photosynthesis ,01 natural sciences ,chemistry.chemical_compound ,Solanum lycopersicum ,Genetics ,Research Articles ,biology ,Chemistry ,food and beverages ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Carbon ,Biochemistry ,Fruit ,biology.protein ,bacteria ,NAD+ kinase ,Thioredoxin ,Solanum ,Starch synthase ,Oxidation-Reduction ,010606 plant biology & botany - Abstract
NADPH-thioredoxin reductase C (NTRC) forms a separate thiol-reduction cascade in plastids, combining both NADPHthioredoxin reductase and thioredoxin activities on a single polypeptide. While NTRC is an important regulator of photosynthetic processes in leaves, its function in heterotrophic tissues remains unclear. Here, we focus on the role of NTRC in developing tomato (Solanum lycopersicum) fruits representing heterotrophic storage organs important for agriculture and human diet. We used a fruit-specific promoter to decrease NTRC expression by RNA interference in developing tomato fruits by 60% to 80% compared to the wild type. This led to a decrease in fruit growth, resulting in smaller and lighter fully ripe fruits containing less dry matter and more water. In immature fruits, NTRC downregulation decreased transient starch accumulation, which led to a subsequent decrease in soluble sugars in ripe fruits. The inhibition of starch synthesis was associated with a decrease in the redox-activation state of ADP-Glc pyrophosphorylase and soluble starch synthase, which catalyze the first committed and final polymerizing steps, respectively, of starch biosynthesis. This was accompanied by a decrease in the level of ADP-Glc. NTRC downregulation also led to a strong increase in the reductive states of NAD(H) and NADP(H) redox systems. Metabolite profiling of NTRC-RNA interference lines revealed increased organic and amino acid levels, but reduced sugar levels, implying that NTRC regulates the osmotic balance of developing fruits. These results indicate that NTRC acts as a central hub in regulating carbon metabolism and redox balance in heterotrophic tomato fruits, affecting fruit development as well as final fruit size and quality
- Published
- 2019
44. Plant responses to fungal volatiles involve global posttranslational thiol redox proteome changes that affect photosynthesis
- Author
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Pablo García-Gómez, Nuria De Diego, Kentaro Kaneko, Francisco Muñoz, Toshiaki Mitsui, Lukáš Spíchal, Karel Doležal, Javier Pozueta-Romero, Edurne Baroja-Fernández, Jan F. Humplík, Marouane Baslam, Ángela María Sánchez-López, Lydia Ugena, Kinia Ameztoy, Goizeder Almagro, Abdellatif Bahaji, Francisco Javier Cejudo, Agencia Estatal de Investigación (España), Ministerio de Economía y Competitividad (España), Ministerio de Ciencia, Innovación y Universidades (España), Diputación Foral de Navarra, Japan Society for the Promotion of Science, Japan Science and Technology Agency, Ministry of Education, Culture, Sports, Science and Technology (Japan), Ministry of Education, Youth and Sports (Czech Republic), European Commission, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
- Subjects
Cytokinins ,Thioredoxin-Disulfide Reductase ,Proteome ,Physiology ,Thioredoxin reductase ,Arabidopsis ,Plant Science ,Redox proteomics ,Photosynthesis ,Redox ,chemistry.chemical_compound ,Microbial volatile compounds ,Abscisic acid ,Volatile Organic Compounds ,Arabidopsis Proteins ,fungi ,Alternaria ,food and beverages ,Hormone signalling ,Chloroplast ,chemistry ,Biochemistry ,Plant–microbe interactions ,Chlorophyll ,Growth promotion ,bacteria ,Peroxiredoxin ,Protein Processing, Post-Translational ,Abscisic Acid - Abstract
Microorganisms produce volatile compounds (VCs) that promote plant growth and photosynthesis through complex mechanisms involving cytokinin (CK) and abscisic acid (ABA). We hypothesized that plants' responses to microbial VCs involve posttranslational modifications of the thiol redox proteome through action of plastidial NADPH‐dependent thioredoxin reductase C (NTRC), which regulates chloroplast redox status via its functional relationship with 2‐Cys peroxiredoxins. To test this hypothesis, we analysed developmental, metabolic, hormonal, genetic, and redox proteomic responses of wild‐type (WT) plants and a NTRC knockout mutant (ntrc) to VCs emitted by the phytopathogen Alternaria alternata. Fungal VC‐promoted growth, changes in root architecture, shifts in expression of VC‐responsive CK‐ and ABA‐regulated genes, and increases in photosynthetic capacity were substantially weaker in ntrc plants than in WT plants. As in WT plants, fungal VCs strongly promoted growth, chlorophyll accumulation, and photosynthesis in ntrc–Δ2cp plants with reduced 2‐Cys peroxiredoxin expression. OxiTRAQ‐based quantitative and site‐specific redox proteomic analyses revealed that VCs promote global reduction of the thiol redox proteome (especially of photosynthesis‐related proteins) of WT leaves but its oxidation in ntrc leaves. Our findings show that NTRC is an important mediator of plant responses to microbial VCs through mechanisms involving global thiol redox proteome changes that affect photosynthesis., This work was supported by the Comisión Interministerial de Ciencia y Tecnología and Fondo Europeo de Desarrollo Regional (Spain; Grants BIO2013‐49125‐C2‐1‐P, BIO2016‐78747‐P, and BIO2017‐85195‐C2‐1‐P), the Government of Navarra (Refs. P1044 AGROESTI and P1004 PROMEBIO), the KAKENHI Grants‐in‐Aid for Scientific Research (A; 15H02486) from the Japan Society for the Promotion of Sciences, Strategic International Collaborative Research Program by the Japan Science and Technology Agency (JST SICORP), the Grant for Promotion of KAAB Projects (Niigata University) from the Ministry of Education, Culture, Sports, Science and Technology (Japan) and the Ministry of Education, Youth and Sport of the Czech Republic, and European Regional Development Fund project “Plants as a tool for sustainable global development” (CZ.02.1.01/0.0/0.0/16_019/0000827).
- Published
- 2019
45. Pathways Into Psychosocial Adjustment in Children
- Author
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Piqueras, José Antonio, Mateu-Martínez, Ornela, Pérez-González, Juan Carlos, and Javier Cejudo
- Subjects
Emotional intelligence ,Psychosocial adjustment ,Emotional education ,Gender ,social acceptance/rejection ,childhood - Abstract
Trait Emotional intelligence (Trait EI) can be understood as a personality trait related to individual differences in recognition, processing, and the regulation of emotionally charged information. Trait EI has been considered a variable of great importance in determining psychosocial adjustment. However, most research on Trait EI has focused on adult and adolescent populations, while very few studies have explored its influence on children. The aim of this study was to analyze possible pathways into psychosocial adjustment in children by examining the combined effects of Trait EI and emotional and social problems. It also aimed to assess the possible mediating role of gender in this relationship. A total of 268 Spanish children participated in this study, ranging in age from 8 to 12 years (mean age = 10.09, SD = 1.32, 45.10% male). Selected measures were applied through a web-based survey called DetectaWeb. The regression and mediation/moderation analyses confirmed that psychosocial adjustment in children was determined by Trait EI directly and by emotional and social problems in an indirect way. Together, the three variables explained 46% of the variance in psychosocial adjustment, although Trait EI was the most powerful predictor (44%), demonstrating incremental validity over and above social and emotional problems. In addition, gender was shown to be a moderating variable between Trait EI and psychosocial adjustment; for girls specifically, lower Trait EI scores were a determinant of lower levels of psychosocial adjustment, regardless of emotional and social problems. It can be concluded that the identified pathways provide keys for emotional education interventions aimed at promoting psychosocial adjustment, well-being, and good mental health among children. Our findings support the buffer role of Trait EI against maladjustment risk in children, but more clearly in girls.
- Published
- 2019
46. Insights into the function of NADPH thioredoxin reductase C (NTRC) based on identification of NTRC-interacting proteins in vivo
- Author
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Antonio Serna, Maricruz González, Julia Ferrández, Víctor Delgado-Requerey, Francisco Javier Cejudo, Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular, Ministerio de Economía y Competitividad (MINECO). España, European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER), González, Maricruz [0000-0001-8141-9679], Delgado-Requerey, Víctor [0000-0001-5264-1633], Cejudo, Francisco J. [0000-0002-3936-5491], González, Maricruz, Delgado-Requerey, Víctor, and Cejudo, Francisco J.
- Subjects
Proteomics ,Chloroplasts ,Thioredoxin-Disulfide Reductase ,TAP-Tag ,Physiology ,Thioredoxin reductase ,Green Fluorescent Proteins ,Arabidopsis ,Plant Science ,Chloroplast ,Green fluorescent protein ,redox regulation ,Bimolecular fluorescence complementation ,proteomics ,Arabidopsis thaliana ,Ferredoxin ,Tandem affinity purification ,biology ,Arabidopsis Proteins ,Chemistry ,food and beverages ,peroxiredoxin ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Research Papers ,Biochemistry ,NTRC ,bacteria ,Peroxiredoxin ,Oxidation-Reduction ,Photosynthesis and Metabolism - Abstract
The identification of NTRC partners in vivo confirms the interaction of NTRC and 2-Cys PRX in Arabidopsis plastids and provides further evidence for a role for NTRC in chloroplast redox regulation., Redox regulation in heterotrophic organisms relies on NADPH, thioredoxins (TRXs), and an NADPH-dependent TRX reductase (NTR). In contrast, chloroplasts harbor two redox systems, one that uses photoreduced ferredoxin (Fd), an Fd-dependent TRX reductase (FTR), and TRXs, which links redox regulation to light, and NTRC, which allows the use of NADPH for redox regulation. It has been shown that NTRC-dependent regulation of 2-Cys peroxiredoxin (PRX) is critical for optimal function of the photosynthetic apparatus. Thus, the objective of the present study was the analysis of the interaction of NTRC and 2-Cys PRX in vivo and the identification of proteins interacting with them with the aim of identifying chloroplast processes regulated by this redox system. To assess this objective, we generated Arabidopsis thaliana plants expressing either an NTRC–tandem affinity purification (TAP)-Tag or a green fluorescent protein (GFP)–TAP-Tag, which served as a negative control. The presence of 2-Cys PRX and NTRC in complexes isolated from NTRC–TAP-Tag-expressing plants confirmed the interaction of these proteins in vivo. The identification of proteins co-purified in these complexes by MS revealed the relevance of the NTRC–2-Cys PRX system in the redox regulation of multiple chloroplast processes. The interaction of NTRC with selected targets was confirmed in vivo by bimolecular fluorescence complementation (BiFC) assays.
- Published
- 2019
47. 2-Cys Peroxiredoxins Participate in the Oxidation of Chloroplast Enzymes in the Dark
- Author
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Juan Manuel Pérez-Ruiz, Valle Ojeda, Francisco Javier Cejudo, Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
- Subjects
0106 biological sciences ,0301 basic medicine ,Chloroplasts ,Plant Science ,Reductase ,Chloroplast ,01 natural sciences ,Enzyme oxidation ,03 medical and health sciences ,chemistry.chemical_compound ,Thioredoxins ,Arabidopsis thaliana ,Thioredoxin ,Hydrogen peroxide ,Molecular Biology ,chemistry.chemical_classification ,biology ,Peroxiredoxin ,food and beverages ,Hydrogen Peroxide ,Peroxiredoxins ,Darkness ,biology.organism_classification ,030104 developmental biology ,Enzyme ,chemistry ,Biochemistry ,biology.protein ,Oxidation-Reduction ,010606 plant biology & botany ,Peroxidase - Abstract
Most redox-regulated chloroplast enzymes are reduced during the day and oxidized during the night. While the reduction mechanism of light-dependent enzymes is well known, the mechanism mediating their oxidation in the dark remains unknown. The thiol-dependent peroxidases, 2-Cys peroxiredoxins (Prxs), play a key role in light-dependent reduction of chloroplast enzymes. Prxs transfer reducing equivalents of thiols to hydrogen peroxide, suggesting the participation of these peroxidases in enzyme oxidation in the dark. Here, we have addressed this issue by analyzing the redox state of well-known redox-regulated chloroplast enzymes in response to darkness in Arabidopsis thaliana mutants deficient in chloroplast-localized Prxs (2-Cys Prxs A and B, Prx IIE, and Prx Q). Mutant plants lacking 2-Cys Prxs A and B, and plants overexpressing NADPH-dependent thioredoxin (Trx) reductase C showed delayed oxidation of chloroplast enzymes in the dark. In contrast, the deficiencies of Prx IIE or Prx Q exerted no effect. In vitro assays allowed the reconstitution of the pathway of reducing equivalents from reduced fructose 1,6-bisphosphatase to hydrogen peroxide mediated by Trxs and 2-Cys Prxs. Taken together, these results suggest that 2-Cys Prxs participate in the short-term oxidation of chloroplast enzymes in the dark. Chloroplast biosynthetic enzymes that are reduced in the light become rapidly oxidized in the dark. Here, we show that enzyme oxidation occurs by the transfer of thiol-reducing equivalents via Trxs and 2-Cys Prxs, but not Prx Q nor Prx IIE, to hydrogen peroxide, which thus acts as the final sink for reducing power from stromal enzymes., This work was supported by European Regional Development Fund-cofinanced grant (BIO2017-85195-C2-1-P) from the Spanish Ministry of Economy, Industry and Competiveness (MINECO).
- Published
- 2018
48. Emotional Intelligence and Its Relationship with Levels of Social Anxiety and Stress in Adolescents
- Author
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Débora Rodrigo-Ruiz, Javier Cejudo, María Luz López-Delgado, and Lidia Losada
- Subjects
Male ,Adolescent ,Health, Toxicology and Mutagenesis ,lcsh:Medicine ,Poison control ,050109 social psychology ,emotional intelligence ,Anxiety ,050105 experimental psychology ,Article ,stress ,well-being ,Injury prevention ,medicine ,Humans ,0501 psychology and cognitive sciences ,Child ,Emotional intelligence ,lcsh:R ,05 social sciences ,Social anxiety ,Public Health, Environmental and Occupational Health ,Human factors and ergonomics ,Cross-Sectional Studies ,Spain ,Well-being ,Trait ,adolescence ,Female ,social anxiety ,medicine.symptom ,Psychology ,Stress, Psychological ,Clinical psychology - Abstract
The aim of this work is to extend the research on the relationships between emotional intelligence and various indicators of subjective well-being in adolescents, such as stress and social anxiety. The existence of differences in stress and social anxiety as a function of an emotional intelligence score is also analyzed. A total of 505 Spanish adolescents between the ages of 12 and 18 participated in the study. The results obtained support the existence of a positive relationship between trait emotional intelligence and subjective well-being. Likewise, the existence of a negative association between emotional intelligence and stress, and emotional intelligence and social anxiety, is confirmed. These results are consistent with other similar works based on adolescent samples.
- Published
- 2018
- Full Text
- View/download PDF
49. The NADPH-Dependent Thioredoxin Reductase C-2-Cys Peroxiredoxin Redox System Modulates the Activity of Thioredoxin x in Arabidopsis Chloroplasts
- Author
-
Francisco Javier Cejudo, Juan Manuel Pérez-Ruiz, Valle Ojeda, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), European Commission, and Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
- Subjects
0106 biological sciences ,0301 basic medicine ,animal structures ,Chloroplasts ,Physiology ,Thioredoxin reductase ,Mutant ,Arabidopsis ,Plant Science ,01 natural sciences ,Chloroplast ,03 medical and health sciences ,Thioredoxins ,Arabidopsis thaliana ,Thioredoxin ,Ferredoxin ,biology ,Chemistry ,Arabidopsis Proteins ,Peroxiredoxin ,Cell Biology ,General Medicine ,biochemical phenomena, metabolism, and nutrition ,biology.organism_classification ,Cell biology ,030104 developmental biology ,Redox regulation ,bacteria ,Oxidation-Reduction ,NADP ,010606 plant biology & botany - Abstract
The chloroplast redox network is composed of a complex set of thioredoxins (Trxs), reduced by ferredoxin (Fdx) via a Fdx-dependent Trx reductase (FTR), and an NADPH-dependent Trx reductase with a joint Trx domain, NTRC, which efficiently reduces 2-Cys peroxiredoxins (2-Cys Prxs). Recently, it was proposed that the redox balance of 2-Cys Prxs maintains the redox state of f-type Trxs, thus allowing the proper redox regulation of Calvin-Benson cycle enzymes such as fructose 1,6-bisphosphatase (FBPase). Here, we have addressed whether the action of 2-Cys Prxs is also exerted on Trx x. To that end, an Arabidopsis thaliana quadruple mutant, ntrc-trxx-δ >2cp, which is knocked out for NTRC and Trx x, and contains severely decreased levels of 2-Cys Prxs, was generated. In contrast to ntrc-trxx, which showed a severe growth inhibition phenotype and poor photosynthetic performance, the ntrc-trxx-δ >2cp mutant showed a significant recovery of growth rate and photosynthetic efficiency, indicating that the content of 2-Cys Prxs is critical for the performance of plants lacking both NTRC and Trx x. Light-dependent reduction of FBPase was severely impaired in mutant plants lacking NTRC or NTRC plus Trx x, despite the fact that neither NTRC nor Trx x is an effective reductant of this enzyme. However, FBPase reduction was recovered in the ntrc-trxx-δ >2cp mutant. Our results show that the redox balance of 2-Cys Prxs, which is mostly dependent on NTRC, modulates the activity of Trx x in a similar way as f-type Trxs, thus suggesting that the activity of these Trxs is highly interconnected., This work was supported by Spanish Ministry of Innovation and Competitiveness (MINECO) [a European Regional Development Fund-co-financed grant (BIO2017-85195-C2-1-P), and a pre-doctoral fellowship to V.O.].
- Published
- 2018
50. The chloroplast NADPH thioredoxin reductase C, NTRC, controls non-photochemical quenching of light energy and photosynthetic electron transport inArabidopsis
- Author
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Anja Krieger-Liszkay, Lourdes Gallardo-Guerrero, Belén Naranjo, Clara Mignée, Marika Lindahl, Francisco Javier Cejudo, and Dámaso Hornero-Méndez
- Subjects
0106 biological sciences ,0301 basic medicine ,Photosystem II ,Physiology ,Thioredoxin reductase ,Non-photochemical quenching ,food and beverages ,Plant Science ,biochemical phenomena, metabolism, and nutrition ,Biology ,Photosynthesis ,01 natural sciences ,Chloroplast ,03 medical and health sciences ,chemistry.chemical_compound ,030104 developmental biology ,Biochemistry ,chemistry ,Thylakoid ,Chlorophyll ,bacteria ,Thioredoxin ,010606 plant biology & botany - Abstract
High irradiances may lead to photooxidative stress in plants, and non-photochemical quenching (NPQ) contributes to protection against excess excitation. One of the NPQ mechanisms, qE, involves thermal dissipation of the light energy captured. Importantly, plants need to tune down qE under light-limiting conditions for efficient utilization of the available quanta. Considering the possible redox control of responses to excess light implying enzymes, such as thioredoxins, we have studied the role of the NADPH thioredoxin reductase C (NTRC). Whereas Arabidopsis thaliana plants lacking NTRC tolerate high light intensities, these plants display drastically elevated qE, have larger trans-thylakoid ΔpH and have 10-fold higher zeaxanthin levels under low and medium light intensities, leading to extremely low linear electron transport rates. To test the impact of the high qE on plant growth, we generated an ntrc-psbs double-knockout mutant, which is devoid of qE. This double mutant grows faster than the ntrc mutant and has a higher chlorophyll content. The photosystem II activity is partially restored in the ntrc-psbs mutant, and linear electron transport rates under low and medium light intensities are twice as high as compared with plants lacking ntrc alone. These data uncover a new role for NTRC in the control of photosynthetic yield.
- Published
- 2016
- Full Text
- View/download PDF
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