Physiological profile, metabolic response, and temporal structure in elite individual table tennis: differences according to gender

No research that has analyzed the structural characteristics, physiological profile, and energy demands in the game of table tennis as played by women is available. The present study aimed to evaluate the physiological, metabolic, and temporal variables of table tennis players and to observe gender differences. Forty-eight elite table tennis players participated in this study: 24 men (25.3 ± 4.07 years) and 24 women (22.3 ± 3.8 years). During simulated competition, temporal structure, heart rate (HR), and lactate (LA) were evaluated. The maximum ergospirometric evaluations were performed in a laboratory. The total table tennis (TT) time and the total resting time (TRT) were longer for men (p < 0.05), but game density was higher for women (p < 0.05). During rallies, the real playing time (RPT) was longer for women, while the TRT was longer for men (p < 0.05). The maximum HR, minimum HR, and maximum LA concentrations were higher for men (p < 0.05). The obtained data reveal gender differences in the physiological, metabolic, structural, and temporal variables in table tennis players. The analysis of the studied variables could allow training sessions to be planned and organized according to table tennis players’ gender

Sequential methodology for the selection of municipal waste treatment alternatives applied to a case study in Chile

Most municipalities in developing countries lack technical and economic resources to improve their municipal solid waste management (MSWM) system. Therefore, tools are needed that enable the most appropriate solutions to be identified to put waste to better use. This study presents an easy-to-apply sequential methodology for the analysis ofMSWMalternatives. The method consists of two stages: (1) screening available technologies based on a small set of key variables; (2) ordering the selected alternatives by a combination of multicriteria methods that integrate local priorities. For this second stage, a basic series of technical, environmental, economic and social indicators is proposed. The methodology is applied to a case study where current management is limited to mixed municipal solid waste (MSW) disposal in a landfill without gas recovery. Seven options for implementing energy recovery in landfill, using mechanical plants to recover part of recyclable material, treating the organic fraction, and employing refuse-derived fuel and/or waste to energy incineration, were evaluated together with the current situation and considering four scenarios. The results identify various alternatives that allow the sustainability of MSWM in the case study to improve. Notwithstanding, today, it is necessary to introduce economic instruments that discourage final disposal to make municipal waste recovery viable

Somnámbulos / Sonámbulos / Sonnambuli. Anticipazione italiana con testo galego e castigliano a fronte

Sonámbulos is Suso de Toro’s latest novel. After five years of silence, the writer returns to his investigation of the issues linked to historical memory. The extracts presented here are an anticipation of the Italian translation. They are presented alongside two original texts, the first in galego, and the second in castellano (directly translated by the author), and they are preceded by a brief introduction to the novel

SISTEMAS DE MEDICIÓN DEL RENDIMIENTO APLICADOS AL FACTOR HUMANO

El objetivo del presente trabajo es analizar y estudiar el sistema de control empresarial, en especial los Sistemas de Medición de Rendimiento del capital intelectual. Para ello tomaremos como referencia tres grandes empresas y analizaremos como consiguen la obtención de datos para las mediciones del rendimiento

The Tetrahymena metallothionein gene family: twenty-one new cDNAs, molecular characterization, phylogenetic study and comparative analysis of the gene expression under different abiotic stressors

Background: Ciliate metallothioneins (MTs) are included in family 7 of the MT superfamily. This family has been divided into two main subfamilies: 7a or CdMTs and 7b or CuMTs. All ciliate MTs reported have been isolated from different Tetrahymena species and present unique features with regard to standard MTs. Likewise, an expression analysis has been carried out on some of MT genes under metal stress, corroborating their classification into two subfamilies. Results: We isolated 21 new cDNAs from different Tetrahymena species to obtain a wider view of the biodiversity of these conserved genes. Structural analysis (cysteine patterns) and an updated phylogenetic study both corroborated the previous classification into two subfamilies. A new CuMT from a Tetrahymena-related species Ichthyophthirius multifiliis was also included in this general analysis. We detected a certain tendency towards the presentation of a CdMT tri-modular structure in Borealis group species with respect to Australis group. We report for the first time a semi-complete paralog duplication of a CdMT gene originating a new CdMT gene isoform in T. malaccensis. An asymmetry of the codon usage for glutamine residues was detected between Cd- and CuMTs, and the phylogenetic implications are discussed. A comparative gene expression analysis of several MT genes by qRTPCR revealed differential behavior among them under different abiotic stressors in the same Tetrahymena species. Conclusions: The Tetrahymena metallothionein family represents a quite conserved proteinstructure group with unique features with respect to standard MTs. Both Cd- and CuMT subfamilies present very defined and differentiated characteristics at several levels: cysteine patterns, modular structure, glutamine codon usage and gene expression under metal stress, among others. Gene duplication through evolution seems to be the major genetic mechanism for creating new MT gene isoforms and increasing their functional diversity

Biomedical Applications of the Biopolymer Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV): Drug Encapsulation and Scaffold Fabrication

Review[Abstract] Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) is a biodegradable and biocompatible biopolymer that has gained popularity in the field of biomedicine. This review provides an overview of recent advances and potential applications of PHBV, with special emphasis on drug encapsulation and scaffold construction. PHBV has shown to be a versatile platform for drug delivery, offering controlled release, enhanced therapeutic efficacy, and reduced side effects. The encapsulation of various drugs, such as anticancer agents, antibiotics, and anti-inflammatory drugs, in PHBV nanoparticles or microspheres has been extensively investigated, demonstrating enhanced drug stability, prolonged release kinetics, and increased bioavailability. Additionally, PHBV has been used as a scaffold material for tissue engineering applications, such as bone, cartilage, and skin regeneration. The incorporation of PHBV into scaffolds has been shown to improve mechanical properties, biocompatibility, and cellular interactions, making them suitable for tissue engineering constructs. This review highlights the potential of PHBV in drug encapsulation and scaffold fabrication, showing its promising role in advancing biomedical applications.Instituto de Salud Carlos III; PI20/00933Instituto de Salud Carlos III; PI17/02197Xunta de Galicia; ED431B 2020/5

La huella de carbono de la Universidad de Córdoba. 2013

La huella de carbono es un término usado para describir la cantidad de gases de efecto invernadero (GEI) que son liberados a la atmósfera directa o indirectamente como consecuencia de una actividad determinada, bien sea la fabricación de un producto, la prestación de un servicio, o el funcionamiento de una organización. Con el concepto huella de carbono de una organización se pretende describir el impacto total que una organización tiene sobre el clima en relación a las emisiones de GEI a la atmósfera. La utilización de la huella de carbono se ha ido desarrollando también como un elemento de información para comunicar el desempeño ambiental de una entidad a todas sus partes interesadas. Además de como indicador para tomar decisiones a la hora de reducir las emisiones asociadas a una actividad. Existen diversas metodologías para la identificación, cuantificación y comunicación de emisiones de GEI de organizaciones. Los documentos que constituyen las referencias más importantes en esta materia son las normas ISO 14064 y 14069, junto con el GHG Protocol, del World Resources Institute y el World Business Council for Sustainable Development

Combining Management, Education and Participation for the Transformation of Universities towards Sustainability: The Trébol Programme

This article presents the design and development of the ‘Trébol (Clover) Programme’, a tool which allows us to improve environmental sustainability in the university environment by reinforcing the education, awareness, and training of its members. The system for certifying ‘good practice’ is divided into four progressive levels, and a certificate is awarded in order to demonstrate the environmental commitment acquired to third parties. The aim of the whole process is to create a practical forum for participation, communication, motivation and competence, which is necessary to foster effective pro-environmental behaviour. The study took place at the University of Córdoba (Spain), and, since it began in the 2013/2014 academic year, over 50 groups a wide range of areas have taken part, making a total of nearly 600 participants. The results show that the Trébol Programme enables environmental commitment to be put into practice, through continuous, systematised, participative and well-organised improvements in environmental performance. Its potential as an educational resource for environmental improvement should also be noted, by boosting environmental awareness and establishing new norms. It fits in well with the principles and areas of action of Education for Sustainable Development, and can be applied to universities and other settings to bring about a shift towards sustainability in the fields of teaching, research and management

Analysis of specific physical fitness in high-level table tennis players—sex differences

: Table tennis performance depends on multiple factors such as technique, tactics and fitness. Several studies have focused on investigating different technical-tactical variables. However, research analysing the specific physical qualities of this sport is scarce, particularly in the female sex. The aim of the present study was to assess the physical fitness variables associated with individual performance in elite table tennis players according to sex. Forty-eight elite players divided into males (n = 24; 25.38 ± 4.01 years) and females (n = 24; 22.33 ± 3.83 years) participated in the study. To determine physical fitness, participants performed vertical jump, hand grip strength, ergospirometry and lateral displacement tests (reaction time, displacement time and lateral acceleration). Male players showed higher values in vertical jump, hand grip strength and maximum oxygen consumption (p < 0.001). Likewise, male players moved laterally faster (p < 0.001). On the other hand, female players had a better reaction time towards the dominant side (p < 0.01). Elite male table tennis players showed better physical fitness compared to female players. Due to the scarcity of data on elite table tennis players, these results can serve as reference values for different table tennis practitioners