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Summary: Objective: This work is aimed to develop a machine learning predictions of health status derived from bioimpedance measurements of adult healthy and cancer individuals. Methods: We conducted a pilot random study containing 2881 female (1220) and male (1661) patients ranging in age between 19 to 96 years old are studied. Among of them, 33 are diagnosed with cancer disease, the rest are healthy. After balancing the initial data, the data of interest contains 1.460 individuals ranging in age between 19 and 93 years old (734 female and 726 male), with 704 diagnosed with cancer and 756 healthy, respectively. The bioimpedance parameters are obtained by measuring standard tetrapolar whole-body configuration. The bioimpedance analyser (BioScan98®) is used, collecting fundamental bioelectrical and other parameters of interest. A classification model are performed, followed by a prediction of phase angle and body mass index. Results: The classification model reveal two robust parameters for predicting the health status, namely the impedance, the total body water and the phase angle with a 97%, 34% and 30 % of significance (respectively), with an area under the receiver operating characteristic curve of AUC = 1.00. The phase angle predictions agrees with previous reports of other type of pathologies, where higher phase angle values is ascribed to better health status and male have larger values than female. Recommendations regarding the capacitive reactance as a robust parameter to inferring health status is discussed. The cubic support vector machine model shows great accuracy predicting the nutritional status based on body mass index of both healthy and cancer patients. Conclusion: The classification, phase angle and body mass index predictive models developed in this work are of the great importance to assist the diagnosis, differentiating between healthy and cancer individual with great accuracy. Despite the moderate lack of body mass index association with cancer, this model can be used for prompt diagnosis.

En el trabajo se realiza un análisis de los principales fenómenos, esencialmente de índole política, que afectaron el funcionamiento de los distintos mecanismos de integración económica y de concertación política en América Latina y el Caribe, así como los avances que en este nsentido se habían logrado con estos mecanismos. Se abordan los rasgos fundamentales que caracterizaron el desarrollo de las relaciones interamericanas durante el periodo y la repercusión que tuvo la forma en que se desenvolvieron esas relaciones en la concreción de los proyectos de concertación política e integración económica regional. Se concluye que, si bien las similitudes que comparten los países del área constituyen una fortaleza, también son consideradas una debilidad pues desde el punto de vista económico son naciones con similares patrones de producción que los hace dependientes de Estados Unidos, país que al fomentar la división ideológica en Latinoamérica se asegura de que la región se mantenga divida.

Abstract Objective The search for other indicators to assess the weight and nutritional status of individuals is important as it may provide more accurate information and assist in personalized medicine. This work is aimed to develop a machine learning predictions of weigh status derived from bioimpedance measurements and other physical parameters of healthy younger volunteers from Southern Cuba Region. Methods A pilot random study at the Pediatrics Hospital was conducted. The volunteers were selected between 2002 and 2008, ranging in age between 2 and 18 years old. In total, 776 female and male volunteers are studied. Along the age and sex in the cohort, volunteers with class I obesity, overweight, underweight and with normal weight are considered. The bioimpedance parameters are obtained by measuring standard tetrapolar whole-body configuration. The bioimpedance analyser is used, collecting fundamental bioelectrical and other parameters of interest. A classification model are performed, followed by a prediction of the body mass index. Results The results derived from the classification leaner reveal that the size, body density, phase angle, body mass index, fat-free mass, total body water volume according to Kotler, body surface area, extracellular water according to Kotler and sex largely govern the weight status of this population. In particular, the regression model shows that other bioparameters derived from impedance measurements can be associated with weight status estimation with high accuracy. Conclusion The classification and regression predictive models developed in this work are of the great importance to assist the diagnosis of weigh status with high accuracy. These models can be used for prompt weight status evaluation of younger individuals at the Pediatrics Hospital in Santiago de Cuba, Cuba.

Abstract Objective The search for other indicators to assess the weight status of individuals is important as it may provide more accurate information and assist in personalized medicine.This work is aimed to develop a machine learning predictions of weigh status derived from bioimpedance measurements and other physical parameters of healthy infant juvenile cohort from the Southern Cuba Region, Santiago de Cuba. Methods The volunteers were selected between 2002 and 2008, ranging in age between 2 and 18 years old. In total, 393 female and male infant and juvenile individuals are studied. The bioimpedance parameters are obtained by measuring standard tetrapolar whole-body configuration. A classification model are performed, followed by a prediction of other bioparameters influencing the weight status. Results The results obtained from the classification model indicate that fat-free mass, reactance, and corrected resistance primarily influence the weight status of the studied population. Specifically, the regression model demonstrates that other bioparameters derived from impedance measurements can be highly accurate in estimating weight status. Conclusion The classification and regression predictive models developed in this work are of the great importance for accessing to the weigh status with high accuracy of younger individuals at the Oncological Hospital in Santiago de Cuba, Cuba.

Introduction: The physiological changes that manifest in children and adolescents during their growth and development have a significant impact on their adult life. Objective: To evaluate the evolution of physiological changes in 2 samples of children and adolescents using bioelectrical impedance vector analysis. Methods: Two samples of infant-juvenile populations of both sexes were used, a Cuban sample of 1067 individuals and an Italian sample of 1823, from two databases. The nomogram and the linear fit to each sample were performed, based on a mathematical model of the form characterize the trajectory of the data of each sample. Results: In the Cuban sample, the mean impedance vectors overlap from the 2 age group to the 12 age group. From the age of 13 years, the vectors of both sexes separate. In the Italian sample, these vectors overlap from the age group 2 years to the age group 13 years. From the 14 to 15 age group, the vectors of both sexes are separate. Both samples followed a straight line, decreasing with increasing age. Conclusions: The changes that occur in the bioelectrical vectors from childhood to adolescence are due to modifications in the stages that lead from childhood to puberty from the physiological point of view.

The cellar environment harbours a consortium of microorganisms on the material surfaces and in the air. Among these microorganisms, the spoilage yeast Brettanomyces bruxellensis can colonise surfaces due to its specific bioadhesive properties. In this study, air and surface samples were collected in several wineries during the winter period. B. bruxellensis was detected in the cellar environment either in the air or on the surfaces of various materials, including in tartaric acid precipitates. Difficult-to-clean tank equipment (taps, wall angles, valves) were identified as critical areas where B. bruxellensis was frequently detected. To confirm that surfaces contaminated by B. bruxellensis could be involved in wine contamination, yeast growth and volatile phenol production were monitored in wine in contact with stainless steel harbouring biofilms. The presence of bioadherent cells and biofilms in contact with the wine resulted in significant cell release into the wine, leading to population growth and the production of volatile phenols at concentrations above the olfactory detection threshold. This study demonstrates the possibility of wine spoilage by resident and adherent populations of B. bruxellensis and confirms the need to pay special attention to the hygiene of hard-to-reach areas such as valves.

En el trabajo se realiza una breve aproximación a la política exterior y funcionamiento de la economía canadiense durante el periodo 2019-2021. Se analiza el papel jugado por el país en el ámbito internacional, así como el desempeño de sus principales indicadores económicos durante el periodo objeto de estudio. Se concluye que gracias a las medidas implementadas por el gobierno para enfrentar la pandemia y a las reservas económicas con que cuenta esta nación, pudo superar la crisis que supuso la covid-19 y enrumbarse nuevamente hacia un crecimiento económico moderado.

Introduction: Chronic myelomonocytic leukemia (CMML) is a hematologic disorder that is an overlap syndrome between myelodysplastic syndromes and myeloproliferative neoplasms, and can be associated with autoimmune and inflammatory diseases. This study aimed to describe kidney involvement in patients with CMML, their treatments, and outcomes. Methods: We conducted a French and American multicenter retrospective study in 15 centers, identifying patients with CMML with acute kidney injury (AKI), chronic kidney disease (CKD), and urine abnormalities. Results: Sixteen patients (males, n = 14; median age 76.5 years [71.9–83]) developed a kidney disease 6 months [1.6–25.6] after the diagnosis of CMML. At the time of kidney disease diagnosis, median urinary protein-to-creatinine ratio was 2 g/g [1.25–3.4], and median serum creatinine was 2.26 mg/dl [1.46–2.68]. Fourteen patients (87.5%) underwent a kidney biopsy, and the 2 main pathological findings were lysozyme nephropathy (56%) and renal infiltration by the CMML (37.5%). Ten patients received a new treatment following the CMML-associated kidney injury. Among patients with monitored kidney function, and after a median follow-up of 15 months [9.9–34.9], 4 patients had CKD stage 3, 4 had CKD stage 4, 1 had an end-stage kidney disease. In our patient series, 2 patients evolved to an acute myeloid leukemia (AML), and 5 died. Compared with 116 CMML controls, patients who had a kidney involvement had a higher monocyte count (P < 0.001), had more CMML-1 (P = 0.005), were more susceptible to develop an AML (P = 0.02), and were more eligible to receive a specific hematologic treatment, with hydroxyurea, or hypomethylating agents (P < 0.001), but no survival difference was seen between the 2 groups (P = 0.6978). Conclusion: In this cohort of patients with CMML with a kidney injury, the 2 most frequent renal complications were lysozyme-induced nephropathy and renal infiltration by the CMML. Kidney involvement should be closely monitored in patients with CMML.

Background (1): The use of fungal chitosan as an antiseptic in wine appears as a promising alternative to sulfur dioxide for the elimination of Brettanomyces bruxellensis sensitive strains. Nevertheless, its utilization raises the question, “how are the treated wines different from the untreated ones?” Methods (2): Chitosan treatment residues were sought in the oligosaccharide and polysaccharide fractions and among 224 low MW ions (−1) in several wines by using liquid chromatography (size exclusion HPLC or LC-MS) and GC-MS. Standard oenological parameters were also examined as well as possible sensory modifications by a panel of tasters composed of experts and non-experts. Results (3): None of these methods enabled the reproducible and reliable identification of a treated wine without comparing it to its untreated control. The fingerprints of treatment are not reliably detectable by the analytical methods used in this study. However, the treated wines seem permanently protected against the development of chitosan-sensitive strains of B. bruxellensis. Conclusions (4): If chitosan treatment modifies the wine, the associated changes were not identified by the liquid chromatography method mentioned above and they were not perceived by most people in our taster panel. However, the expected antimicrobial action of chitosan was observed on B. bruxellensis sensitive strains and persisted at least one year. Tolerant strains were less affected by these persistent effects.

La adecuada difusión de los resultados de las investigaciones científicas es imprescindible tanto para el progreso de la medicina como para la mejora de la atención a los pacientes.(1) El artículo científico es, por definición, un tipo especial de documento que contiene determinada información en un orden establecido. Es un informe escrito y publicado que describe resultados originales de investigación

La Revista Cubana de Salud y Trabajo –en lo adelante, la revista-, fue creada el 1ro de diciembre de 1999, su primer número se publicó en primer semestre del año 2000. Es una publicación periódica de acceso abierto y frecuencia cuatrimestral del Instituto Nacional de Salud de los Trabajadores (Insat) de la República de Cuba, del cual constituye su órgano científico de divulgación oficial.

La investigación mueve el universo del conocimiento, descubre e informa al mundo académico. Se conoce que la tecnología ha revolucionado al mundo permitiendo mayor accesibilidad, alcance y propagación a través de los medios de comunicación.(1) El Open Journal System (OJS), es un gestor de revistas de acceso abierto con un software desarrollado, financiado y distribuido de forma gratuita por el proyecto Public Knowledge Project.(2) Tiene, entre sus múltiples beneficios, permitir el acceso total por parte de editores, autores y lectores; poder utilizarse por web y aplicación en dispositivos móviles y posibilitar la descarga de los artículos, compartirlos y utilizarlos en futuras investigaciones y escritos, etc.

Abstract Antiangiogenic treatment targeting the vascular endothelial growth factor (VEGF) pathway is a powerful tool to combat tumor growth and progression; however, drug resistance frequently emerges. We identify CD5L (CD5 antigen-like precursor) as an important gene upregulated in response to antiangiogenic therapy leading to the emergence of adaptive resistance. By using both an RNA-aptamer and a monoclonal antibody targeting CD5L, we are able to abate the pro-angiogenic effects of CD5L overexpression in both in vitro and in vivo settings. In addition, we find that increased expression of vascular CD5L in cancer patients is associated with bevacizumab resistance and worse overall survival. These findings implicate CD5L as an important factor in adaptive resistance to antiangiogenic therapy and suggest that modalities to target CD5L have potentially important clinical utility.

In this contribution, we present novel results on top-down drilling in silicon, the most important semiconductor material, focusing specifically on the influence of the laser parameters. We compare the holes obtained with repetitive single pulses, as well as in different MHz- and GHz-burst regimes. The deepest holes were obtained in GHz-burst mode, where we achieved holes of almost 1 mm depth and 35 µm diameter, which corresponds to an aspect ratio of 27, which is higher than the ones reported so far in the literature, to the best of our knowledge. In addition, we study the influence of the energy repartition within the burst in GHz-burst mode.

Elevar la calidad de vida de estudiantes en todas las carreras universitarias es uno de los retos más importantes para los especialistas de Educación Física, y la terapéutica en particular; sin embargo, cuando los beneficiarios presentan lesiones en la columna vertebral, necesitan una adecuada rehabilitación física y mental. Se planteó como objetivo desarrollar ejercicios físicos como tratamiento para compensar el tiempo de recuperación de los estudiantes con lesiones en la columna vertebral que asisten al área terapéutica de la Universidad de Oriente, a través de las clases de Educación Física. En la investigación, se utilizaron métodos de nivel teórico y empírico, para conocer el estado real del problema, además de las técnicas para recoger y procesar información. Los ejercicios físicos propuestos están dirigidos fundamentalmente a estudiantes que presentan escoliosis, y de forma profiláctica-terapéutica se ofrece tratamiento para compensar y/o prevenir el tiempo de aparición del dolor que permita su recuperación inmediata e incorporación al proceso de enseñanza-aprendizaje dentro de las clases de Educación Física. Se tuvo en cuenta una estructura y ordenamiento metodológico de los contenidos en cuatro etapas escalonadas durante la aplicación del tratamiento, en correspondencia con las características individuales de la muestra. Los especialistas que valoraron la propuesta lo consideraron factible para su aplicación y de utilidad.

La présence d’écoulements de fuite ou de passage dans des organes de robinetterie industrielle conduit à des risques de sûreté des installations, de sécurité pour les personnes, de contamination de l’environnement ou de perte financière. Actuellement, la mesure des émissions acoustiques (EA) sur la surface extérieure de l’organe à diagnostiquer est un indicateur de la présence d’un écoulement interne. En effet, un jet, ou une fuite, produit des émissions acoustiques qui se propagent à la surface de la robinetterie. Les émissions acoustiques dépendent de plusieurs paramètres caractérisant la robinetterie (tels que la matière ou la géométrie) et le fluide (par exemple, la pression ou la température). Ainsi, des méthodes de diagnostic permettent de détecter l’inétanchéité d’un organe mais il n’existe actuellement pas de modèle physique permettant de quantifier les fuites. Pour répondre à cette problématique, nous avons mis en place une installation expérimentale permettant de simuler des fuites d’eau à des pressions allant jusqu’à 50 bar. L’installation se veut semi-industrielle avec des conduits amonts et avals de quatre pouces (10,16 cm) et des brides de test (où sont percés les orifices de fuite) de six pouces (15,24 cm). Deux orifices de fuite cylindriques (diamètres de 0,57 et 0,72 mm) et décentrés (affleurant la surface interne) ont été étudiés. Les émissions acoustiques ont été mesurées à l’aide d’un capteur piézoélectrique large bande (avec une plage de fonctionnement allant de 150 à 950 kHz) et d’une instrumentation ad hoc. Les niveaux acoustiques obtenus ont ensuite été corrélés aux paramètres de l’écoulement (pression, température et débit). Ces premières données nous permettront, à terme, de valider un modèle analytique ou numérique que nous déploierons sur les centres nucléaires de production d’électricité lors de nos mesures ponctuelles ou en continu (monitoring).

As part of the move to reduce SO2 in wines, the empirical use of chitosan to eliminate the spoilage yeast Brettanomyces bruxellensis is becoming a frequent alternative. Chitosan treatment has an effect on a number of microbial species, at least temporarily, but there is wide variability in response within strains of each species. In addition, the effectiveness of chitosan also depends on the physical and chemical parameters of the wine. However, when chitosan treatment is effective, it appears to be long-lasting.

Heterogeneous and multidisciplinary data generated by research on sustainable global agriculture and agrifood systems requires quality data labeling or annotation in order to be interoperable. As recommended by the FAIR principles, data, labels, and metadata must use controlled vocabularies and ontologies that are popular in the knowledge domain and commonly used by the community. Despite the existence of robust ontologies in the Life Sciences, there is currently no comprehensive full set of ontologies recommended for data annotation across agricultural research disciplines. In this paper, we discuss the added value of the Ontologies Community of Practice (CoP) of the CGIAR Platform for Big Data in Agriculture for harnessing relevant expertise in ontology development and identifying innovative solutions that support quality data annotation. The Ontologies CoP stimulates knowledge sharing among stakeholders, such as researchers, data managers, domain experts, experts in ontology design, and platform development teams.

Objective: To evaluate the application of microorganisms with native strains on the growth of Morus alba Linn under semi-controlled conditions. Materials and Methods: The work was carried out at the Mountain Development Center, El Salvador municipality, Guantánamo province. Stakes of M. alba, 30 cm long with five buds, were used. Fersialytic soil and organic matter (sheep manure) were used as substrate in a 3:1 ratio. Four concentrations of the microorganism with native strains were applied: 5, 10, 15 and 20 mL/L, which constituted the treatments. A control was used, with water only. A complete randomized experimental design was applied, with 20 plants per treatment. Measurements were branch number, root number, leaf number, branch length, stem diameter and root length. The data were processed from a simple classification analysis of variance. Results: There were no significant differences for the number of branches and number of leaves. Regarding the number of roots, the best treatment was T2, which differed significantly from the others. Treatments T2 and T3 tended to have the highest numerical values. As for branch length and root length, there were significant differences among treatments. No differences were found in stem diameter. The highest numerical values in all indicators were obtained with the application of 5 and 10 mL/L of the bioproduct on M. alba seedlings. Conclusions: With the application of 5 and 10 mL/L of microorganisms with native strains, the performance of branch length, number of roots and root length of M. alba seedlings was favored.

Introduction: Case managers can guide caregivers during their search for care for relatives with neurocognitive disorders. The present study aimed to evaluate the effects of this procedure on caregiver burden and quality of life. Methods: Family caregivers searching for care at a memory clinic before the first consultation were provided written information and they provided verbal consent to participate in this pre-post intervention study. Intervention was a structured pre-consultation phone call interview given by the case manager to inform and organize individualize pathway of care. The mini-Zarit Burden Interview and the EuroQol five-dimensional questionnaire quality of life scores were recorded by an independent assessor before the intervention and 1 month thereafter. An expectation questionnaire was also completed during the assessments. The pre and post scores were compared using the Wilcoxon signed-rank test. Results: In total, 45 participants were enrolled and 35 were assessed twice. There was no significant change in the total mini-Zarit Burden Interview score; however, the levels of stress due to caring and meeting familial responsibilities (p = 0.025), and the fear of what the future holds for the participants’ relative (p = 0.01) was lower at 1 month. The need for information about the pathways of care decreased, but no change in support satisfaction was observed. Quality of life was good and did not change. Conclusions: During the pre-consultation intervention, the case manager may fulfill several needs of caregivers, particularly to obtain personalized information, which should be implemented in memory clinics.

Root-knot nematodes (RKNs) Meloidogyne spp. are extremely polyphagous pests and four species severely affect grapevines throughout the world: M. arenaria, M. incognita, M. javanica and M. ethiopica. Californian populations of M. arenaria and M. incognita are reported to be virulent to widely used rootstocks and to the rootstock ‘Harmony’ in particular. Breeding RKNs-resistant grape rootstocks is a promising alternative to highly toxic nematicides. Muscadine (Vitis rotundifolia syn. Muscadinia rotundifolia) is a resistance (R) source with undercharacterised genetics. To this end, we used a segregating progeny between the RKN-resistant Vitis x Muscadinia accession ‘VRH8771’ from the muscadine source ‘NC184-4’ and the RKN-susceptible V. vinifera cv. Cabernet-Sauvignon. We first phenotyped its resistance to isolates of the i) M. arenaria, ii) M. incognita and iii) M. javanica species, and then to iv) two mixed Harmony-virulent Californian populations of M. arenaria and M. incognita. Finally, we created an isolate of M. arenaria and M. incognita from these Harmony populations and phenotyped the progeny to each of them [v) and vi)], and to vii) an isolate of M. ethiopica. The resistance phenotype of all the progeny’s individuals was independent of the RKN isolates or populations used. Resistance was mapped in a region of chromosome 18 in VRH8771, supporting the hypothesis that it is conferred by a single gene with an unprecedented wide spectrum in grapevine, including Harmony-virulent isolates. This dominant gene, referred to as MsppR1, is linked to the telomeric QTL XiR4 for X. index resistance from the same source. Additionally, plant mortality data showed that MsppR1-resistant material expressed a high-level resistance to the Harmony-virulent isolates. Our results are a first step towards the development of marker-assisted breeding using SSR and SNP markers for resistance to RKNs in accession VRH8771.

Introducción: El entorno de la bahía de Santiago de Cuba alberga 27 fuentes contaminantes; entre ellas 22 industrias e instalaciones, cuatro ríos y el drenaje Trocha, causantes del deterioro del ecosistema. Objetivo: Mostrar la variabilidad de la contaminación de la bahía de Santiago de Cuba entre los años 2006 y 2020. Materiales y Métodos: En el 2006 y 2020 las muestras fueron tomadas en el horario de la mañana, siempre a la misma hora, en superficie y a un metro de profundidad a lo largo de la orilla este y a la entrada de la Bahía. Se muestrearon los parámetros pH, nitritos, nitratos, amonio, fosfato, demandas química y bioquímica de oxígeno, oxígeno disuelto, sólidos suspendidos y turbiedad. Las muestras fueron analizadas en los laboratorios de la Empresa Geominera Oriente, de Higiene y Epidemiología y en la Empresa Nacional de Asistencia y Servicios Técnicos de Santiago de Cuba. Resultados y Discusión: En 2006 las aguas de la playa La Estrella se podían usar como zona de baño y el resto de las zonas de la Bahía para la pesca recreativa, excepto la zona correspondiente a la Fábrica de Harina. En el 2020 las cifras obtenidas indican contaminación de las aguas de la Bahía en la entrada y en el interior, destacándose un elevado contenido de sólidos en suspensión. Conclusiones: Las características de las aguas de la bahía de Santiago de Cuba en el año 2020 se deterioraron con respecto a los reportes realizados en el 2006.

Objective:To evaluate different inclusion levels of Morus alba, Linn. in the feeding of Pelibuey sheep, fattening category, in Guantánamo province, Cuba. Materials and Methods:The unit was characterized through interviews to managers and workers and direct observation. The chemical composition of M. alba foliage was analyzed and its inclusion was evaluated. Thirty-two castrated sheep in good health were selected. Four groups were formed. Three groups were fed M. alba forage at 15, 20 and 25 % after grazing. The fourth group was not given forage (control). A randomized design was applied, with eight replicas. The data were analyzed by ANOVA and economic analysis was performed. Results: M. alba foliage had a crude protein content of 22,4 %. The treatment with 25 % inclusion had the highest values for final weight (11,4 kg) and average daily gain (127,4 g). In the economic analysis, the 25 % treatment reported gain at slaughter of $129,8 kg/animal in national currency. Conclusions: With the inclusion of M. alba as a supplement after grazing in fattening sheep, higher values of mean daily gain and weight gain at slaughter were obtained. The economic assessment indicated that the inclusion of this forage as supplementation is feasible to achieve higher profits, which were between 117,6 and 129,8 $/kg in national currency.

Introducción: El interés por la información y el conocimiento toma cada vez más fuerza. Es creciente la demanda social de orientación adecuada para afrontar los complejos y nuevos problemas globales. Las condiciones actuales de la Revolución Científico-Técnica producen un interés creciente hacia la información y el conocimiento y la gestión y uso creativo de ambas. Una mejor y más efectiva estrategia para lograr la difusión de la actividad científica es publicar trabajos y compartirlos a través de la ciencia abierta. Se propone una investigación exploratoria relacionada con la temática de la salud ocupacional. Objetivo: Identificar la información general sobre la salud ocupacional. Métodos: Se determinó la validez de contenido según criterios de evaluación de Moriyama a un cuestionario confeccionado previamente con los aspectos requeridos para identificar la información general sobre la temática. La versión definitiva fue aplicada para explorar los mencionados elementos en una población relacionada con la institución y/o la especialidad. Se analizaron y presentaron los resultados cualitativa y estadísticamente para recomendar estrategias que permitan incrementar los conocimientos y la visibilidad nacional e internacional. Resultados: Se obtuvo, mayoritariamente a través de las redes sociales ResearchGate y LinkedIn, información general sobre la Salud ocupacional, clasificada según los datos sociodemográficos, conocimientos de la gestión de la información y relación con la actividad del Instituto Nacional de Salud de los Trabajadores. Conclusiones: Los resultados obtenidos en la muestra estudiada inclinan a pensar en la necesidad de un trabajo sostenido para gestionar el aumento de la visibilidad de la Salud ocupacional Introduction: Interest in information and knowledge is gaining an increasing strength. The social demand for adequate guidance to face the complex and new global problems is growing. The current conditions of the scientific-technical revolution produce a growing interest in information and knowledge, as well as the management and creative usage of both. A better and more effective strategy to achieve the dissemination of scientific activity is publishing works and sharing them through open science. An exploratory research related to the theme of occupational health is proposed. Objective: To identify general information about occupational health. Methods: Content validity was determined according to Moriyama's assessment criteria applied to a previously prepared questionnaire with the required aspects for identifying the general information on the subject. The final version was applied to explore the aforementioned elements in a population related to the institution or the specialty. The results were analyzed and presented qualitatively and statistically to recommend strategies that allow increasing knowledge, as well as national and international visibility. Results: General information on occupational health was obtained, mostly through the ResearchGate and LinkedIn social networks. Such information was classified according to sociodemographic data, knowledge of information management and its relationship with the activity of the Instituto Nacional de Salud de los Trabajadores. Conclusions: The results obtained in the studied sample permit to think about the need for sustained work to manage the increased visibility of occupational health

Introducción: El lubricante es un medio cuya función es impedir el contacto directo entre superficies disminuyendo el rozamiento y desgaste, reduciendo con ello el calor y los desechos que se generan durante este proceso, además puede refrigerar y sellar herméticamente las áreas de rozamiento. El vertimiento de aceites minerales a los ecosistemas se ha convertido en un grave problema medioambiental debido a su impacto negativo, por lo que se investigan alternativas amigables con el ambiente, entre las que se encuentran los derivados de aceites vegetales como el de Jatropha curcas. Objetivo: Determinar la toxicidad de los biolubricantes hidráulicos formulados a partir del aceite de Jatropha curcas modificado químicamente. Materiales y Métodos: Se realizó un bioensayo de sensibilidad con semillas de lechuga (Lactuca sativa) en placa Petri y en tierra para diferentes formulaciones de biolubricantes. Resultados y Discusión: Se determinó que los biolubricantes formulados con aceite de Jatropha curcas se clasifican como tóxicos para las semillas de Lactuca sativa tanto en placa como en tierra a los cinco días de sembradas. Conclusiones: Estos biolubricantes mostraron efectos fitotóxicos en el sistema radicular y apical. Las mezclas correspondientes al 2,5 % en placa fue la menos tóxica para los tres biolubricantes ensayados, aunque los porcientos de inhibición fueron superiores al 70 %.

French research on rootstocks is based on two strategies: the creation of new rootstocks and the evaluation of existing rootstocks (GreffAdapt facility). The search for traits associated with drought tolerance has not yet been brought to a successful conclusion, but work is continuing with the emphasis on field experiments, measurement of δ13C, consideration of yield, and study of trait plasticity as a function of the scion and the water status.

Abstract Knowledge of material emissivity maps and their true temperatures is of great interest for contactless process monitoring and control with infrared cameras when strong heat transfer and temperature change are involved. This approach is always followed by emissivity or reflections issues. In this work, we describe the development of a contactless infrared imaging technique based on the pyro-reflectometry approach and a specular model of the material reflection in order to overcome emissivities and reflections problems. This approach enables in situ and real-time identification of emissivity fields and autocalibration of the radiative intensity leaving the sample by using a black body equivalent ratio. This is done to obtain the absolute temperature field of any specular material using the infrared wavelength. The presented set up works for both camera and pyrometer regardless of the spectral range. The proposed method is evaluated at room temperature with several heterogeneous samples covering a large range of emissivity values. From these emissivity fields, raw and heterogeneous measured radiative fluxes are transformed into complete absolute temperature fields.