Quebrada de Humahuaca: Rock art in the Landscape. Narratives and images of agropastoral societies in the Andes of Argentina

Se presenta aquí una síntesis de los contenidos de la exhibición realizada en el Museo de Altamira,entre el 1 de diciembre de 2020 y el 1 de abril de 2021, sobre arte rupestre de la Quebrada de Humahuaca y es el resultado de la colaboración generada en el seno de la red Rock Art Network (RAN) con dicho Museo en el marco de la serie de exposiciones temporales sobre Arte Rupestre Patrimonio Mundial UNESCO. Esta exposición tiene como centro los estudios llevados a cabo por el Proyecto deInvestigación ?Paisaje Humano en Tres Cruces? en el sector norte de la Quebrada de Humahuaca (Jujuy, Argentina) y es la primera dedicada enteramente a arte rupestre de Argentina en un país de la Unión Europea.The authors present a synopsis of the contents displayed in a temporary exhibition in Museo de Altamira, during December 1st, 2020 to April 1st, 2021. This exhibition covers the rock art of Quebrada de Humahuaca and is the result of a collaboration generated within the Rock Art Network (RAN) with this museum as part of the series of temporary exhibitions about rock art UNESCO World Heritage. This particular exhibition focuses on the results of a research project “Human Landscape in Tres Cruces” in the northern sector of Quebrada de Humahuaca (Jujuy, Argentina) and is the first one devoted entirely to Argentinean rock art in a country within the European Union.Fil: Hernandez Llosas, Maria Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Arqueología; ArgentinaFil: Scaro, Agustina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Jujuy. Instituto de Geología Minera; ArgentinaFil: Calomino, Eva Amanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Saavedra 15. Instituto Multidisciplinario de Historia y Ciencias Humanas; ArgentinaFil: Bernal Piñeros, Valentina. Universidad de Buenos Aires. Facultad de Filosofía y Letras. Instituto de Arqueología; Argentin

Análisis biomecánico del pie protésico Bioc-dm2

La marcha humana es uno de los aspectos que comprometen directamente el nivel de bienestar del ser humano, además deimpactar de manera emocional y física, también en el cotidiano vivir. Para este estudio nos encontramos inmersos en el reto de poder mejoraralgunas condiciones de la marcha en un paciente que haya sufrido pérdida de miembros inferiores, específicamente a nivel transtibial o transfemoral.Dado que nuestro propósito fue el análisis, diseño y manufactura de un componente protésico de miembro inferior que supla las necesidades propiasy de funcionalidad, es necesario construir un pie con todos los estándares de calidad que constituya todos y cada uno de los movimientos requeridospara formar el complejo patrón fundamental de la marcha; además que pueda soportar el peso fácilmente y el uso cotidiano además de lascaracterísticas físicas de nuestro paciente objeto de estudio. Al realizar la validación física y en la marcha humana, se observa una respuestaadecuada en términos mecánicos, de material de construcción y el dinamismo del componente, evidenciando la adecuada construcción y ensambledel componente. Por otro lado, podemos evidenciar que el diseño y la verificación del componente nos muestra un elemento competitivo, comparadocon los elementos existentes en el mercado; Haciendo necesario la verificación ante Instituto Nacional de Vigilancia de Medicamentos y AlimentosINVIMA, y la puesta en marcha del dispositivo replicador de uso, para la verificación del componente frente a la norma ISO 10328.Walking is one of the aspects directly compromising human wellbeing, as it has a physical and emotional impact in daily life.For this study, we delve into the challenge of improving some walking conditions in a patient suffering lower limb loss, specifically at transtibialor transfemoral levels. Given that our purpose was the analysis, design and manufacture of a lower-limb prosthetic component, which fills the needsfor functionality, it became necessary to build a foot with all the quality standards associated to each and all movements required to form thecomplex fundamental pattern of walking. Besides, this foot should also easily endure weight, daily use and physical characteristics of the patientobject of this study. When performing physical validation and during human walk, a proper response is observed in terms of mechanics, materialsand dynamics of the component, thus making evident proper construction and assembly. On the other hand, it is feasible that design and verificationof the component provided a competitive element, as compared to existing elements currently in the market. The previous situation generated theneed for verification from the National Institute for Medications and Food (INVIMA), as well as the revision of the use replying device, forcomponent verification, in accordance with ISO 10328

Improving properties of thermoplastic starch films by incorporating active extracts and cellulose fibres isolated from rice or coffee husk

[EN] Hydrothermal (60 min, 180 degrees C) extracts and cellulose fibres from coffee and rice husks were obtained to be incorporated into corn starch films, in order to improve the film functional properties as food packaging material and confer them active properties. Extracts exhibited antioxidant properties (EC50: 5.37-5.29 mg extract solids/ mg DPPH) and antibacterial activity against Listeria innocua and Escheriquia coil (MIC values: 35-45 and 34-35 mg extract solids/mL, respectively). The active extracts improved tensile properties of the starch films; elastic modulus increased by about 350% and films become less stretchable. The cellulosic fibres from both residues were more effective as reinforcing agents in films containing extract solids than in net starch films. Extracts also provoked 30% reduction in the WVP of starch films and 50-85 % reduction in the oxygen permeability, depending on their amount in the films, but no effect of cellulose fibres was observed on barrier properties.The authors thank the Ministerio de Economia y Competitividad (Spain) for the financial support provided through Project AGL2016-76699-R. The authors wish to thank Professor Yineth Pineros-Castro PhD from Universidad Jorge Tadeo Lozano (Bogota, Colombia) and Professor Misael Cortes PhD from Universidad Nacional de Colombia (Medellin, Colombia) for their assistance in the extraction process and spray drying. Authors also thank the Electron Microscopy Service of the UPV for their technical assistance.Collazo-Bigliardi, S.; Ortega-Toro, R.; Chiralt Boix, MA. (2019). Improving properties of thermoplastic starch films by incorporating active extracts and cellulose fibres isolated from rice or coffee husk. Food Packaging and Shelf Life. 22:1-10. https://doi.org/10.1016/j.fpsl.2019.100383S1102

Propuesta de mejora en el SG-SST para el periodo 2021 en la empresa Clean Expert Colombia S.A.

Encuesta, Matriz de riesgos, Formato registro de accidentes de trabajo y enfermedades profesionales -ntc3701, Matriz de jerarquización con medidas de prevención y control frente a un peligro riesgo, Formato registro de acciones preventivas y correctivas, Diagrama de GanttLa empresa Expert Clean Colombia SAS es una empresa que brinda soluciones de acuerdo a la necesidad del cliente prestando el servicios de limpieza y manutención dirigidos a empresas y a personas naturales en servicios como en nuestros hogares y lugares de trabajo, brinda servicios de limpieza tales como Sanitización industrial ,transporte de residuos, domicilios, lavado de vidrios entre otras, la mejora del sistema de salud y seguridad en el trabajo tiene como finalidad custodiar el amparo, estabilidad y las buenas condiciones en el ambiente profesional para que los empleados llevan a cabo en buenas condiciones sus actividades diarias dentro de la organización y así mismo incrementar en rendimiento de la compañía, con la mejora del sistema antes mencionado permite alcanzar las condiciones necesarias de seguridad y salud de los empleados, para ello, los profesionales en prevención de riesgos deben identificar, minimizar, evaluar y controlar los peligros o riesgos asociados a las actividades laborales, y promover acciones formativas y medidas para prevenir y evitar estos riesgos y saber cómo actuar para tomar acciones preventivas y correctivas así logar prevenir daños y accidentes . Los empleadores están obligados a informar, capacitar y evaluar los trabajadores sobre el alcance de los riesgos que se evidencien su trabajo y proporcionar los medios para evitarlos esto permitirá optimizar su capacidad de permanecer en las actividades comerciales ofreciendo seguridad. La empresa Expert Clean Colombia SAS, Tiene como objetivo mejorar las condiciones necesarias incluidas en la gestión de la seguridad, especialmente para reducir los riesgos laborales que se producen en el entorno laboral.The company Expert Clean Colombia SAS is a company that provides solutions according to the client's need, providing cleaning and maintenance services aimed at companies and individuals in services such as in our homes and workplaces, provides cleaning services such as Sanitation industrial, waste transport, homes, glass washing, among others, the improvement of the health and safety system at work is intended to protect the protection, stability and good conditions in the professional environment so that employees carry out in good conditions their daily activities within the organization and likewise increase the performance of the company, with the improvement of the aforementioned system allows to achieve the necessary conditions of safety and health of employees, for this, professionals in risk prevention must identify minimize, evaluate and control the hazards or risks associated with the s work activities, and promote training actions and measures to prevent and avoid these risks and know how to act to take preventive and corrective actions in order to prevent damage and accidents. Employers are obliged to inform, train and evaluate workers on the extent of the risks that are evident in their work and provide the means to avoid them, this will allow them to optimize their ability to remain in commercial activities offering safety. The company Expert Clean Colombia SAS, it aims to improve the necessary conditions included in the management of safety, especially to reduce the occupational risks that occur in the workplace

Survey data on the impact of COVID-19 on parental engagement across 23 countries

This data article describes the dataset of the International COVID-19 Impact on Parental Engagement Study (ICIPES). ICIPES is a collaborative effort of more than 20 institutions to investigate the ways in which, parents and caregivers built capacity engaged with children's learning during the period of social distancing arising from global COVID-19 pandemic. A series of data were collected using an online survey conducted in 23 countries and had a total sample of 4,658 parents/caregivers. The description of the data contained in this article is divided into two main parts. The first part is a descriptive analysis of all the items included in the survey and was performed using tables and figures. The second part refers to the construction of scales. Three scales were constructed and included in the dataset: 'parental acceptance and confidence in the use of technology', 'parental engagement in children's learning' and 'socioeconomic status'. The scales were created using Confirmatory Factor Analysis (CFA) and Multi-Group Confirmatory Analysis (MG-CFA) and were adopted to evaluate their cross-cultural comparability (i.e., measurement invariance) across countries and within sub-groups. This dataset will be relevant for researchers in different fields, particularly for those interested in international comparative education

Suppression of Phospholipase Dγs Confers Increased Aluminum Resistance in Arabidopsis thaliana

Aluminum (Al) toxicity is the major stress in acidic soil that comprises about 50% of the world's arable land. The complex molecular mechanisms of Al toxicity have yet to be fully determined. As a barrier to Al entrance, plant cell membranes play essential roles in plant interaction with Al, and lipid composition and membrane integrity change significantly under Al stress. Here, we show that phospholipase Dγs (PLDγs) are induced by Al stress and contribute to Al-induced membrane lipid alterations. RNAi suppression of PLDγ resulted in a decrease in both PLDγ1 and PLDγ2 expression and an increase in Al resistance. Genetic disruption of PLDγ1 also led to an increased tolerance to Al while knockout of PLDγ2 did not. Both RNAi-suppressed and pldγ1-1 mutants displayed better root growth than wild-type under Al stress conditions, and PLDγ1-deficient plants had less accumulation of callose, less oxidative damage, and less lipid peroxidation compared to wild-type plants. Most phospholipids and glycolipids were altered in response to Al treatment of wild-type plants, whereas fewer changes in lipids occurred in response to Al stress in PLDγ mutant lines. Our results suggest that PLDγs play a role in membrane lipid modulation under Al stress and that high activities of PLDγs negatively modulate plant tolerance to Al

Identifying the core concepts of pharmacology education : a global initiative

Background and Purpose: In recent decades, a focus on the most critical and fundamental concepts has proven highly advantageous to students and educators in many science disciplines. Pharmacology, unlike microbiology, biochemistry or physiology, lacks a consensus list of such core concepts . Experimental approach: We sought to develop a research-based, globally relevant list of core concepts that all students completing a foundational pharmacology course should master. This two-part project consisted of exploratory and refinement phases. The exploratory phase involved empirical data mining of the introductory sections of five key textbooks, in parallel with an online survey of over 200 pharmacology educators from 17 countries across six continents. The refinement phase involved three Delphi rounds involving 24 experts from 15 countries across six continents. Key Results: The exploratory phase resulted in a consolidated list of 74 candidate core concepts. In the refinement phase, the expert group produced a consensus list of 25 core concepts of pharmacology. Conclusion and Implications: This list will allow pharmacology educators everywhere to focus their efforts on the conceptual knowledge perceived to matter most by experts within the discipline. Next steps for this project include defining and unpacking each core concept and developing resources to help pharmacology educators globally teach and assess these concepts within their educational contexts

Worldwide comparison of survival from childhood leukaemia for 1995–2009, by subtype, age, and sex (CONCORD-2): a population-based study of individual data for 89 828 children from 198 registries in 53 countries

Background Global inequalities in access to health care are reflected in differences in cancer survival. The CONCORD programme was designed to assess worldwide differences and trends in population-based cancer survival. In this population-based study, we aimed to estimate survival inequalities globally for several subtypes of childhood leukaemia. Methods Cancer registries participating in CONCORD were asked to submit tumour registrations for all children aged 0-14 years who were diagnosed with leukaemia between Jan 1, 1995, and Dec 31, 2009, and followed up until Dec 31, 2009. Haematological malignancies were defined by morphology codes in the International Classification of Diseases for Oncology, third revision. We excluded data from registries from which the data were judged to be less reliable, or included only lymphomas, and data from countries in which data for fewer than ten children were available for analysis. We also excluded records because of a missing date of birth, diagnosis, or last known vital status. We estimated 5-year net survival (ie, the probability of surviving at least 5 years after diagnosis, after controlling for deaths from other causes [background mortality]) for children by calendar period of diagnosis (1995-99, 2000-04, and 2005-09), sex, and age at diagnosis (< 1, 1-4, 5-9, and 10-14 years, inclusive) using appropriate life tables. We estimated age-standardised net survival for international comparison of survival trends for precursor-cell acute lymphoblastic leukaemia (ALL) and acute myeloid leukaemia (AML). Findings We analysed data from 89 828 children from 198 registries in 53 countries. During 1995-99, 5-year agestandardised net survival for all lymphoid leukaemias combined ranged from 10.6% (95% CI 3.1-18.2) in the Chinese registries to 86.8% (81.6-92.0) in Austria. International differences in 5-year survival for childhood leukaemia were still large as recently as 2005-09, when age-standardised survival for lymphoid leukaemias ranged from 52.4% (95% CI 42.8-61.9) in Cali, Colombia, to 91.6% (89.5-93.6) in the German registries, and for AML ranged from 33.3% (18.9-47.7) in Bulgaria to 78.2% (72.0-84.3) in German registries. Survival from precursor-cell ALL was very close to that of all lymphoid leukaemias combined, with similar variation. In most countries, survival from AML improved more than survival from ALL between 2000-04 and 2005-09. Survival for each type of leukaemia varied markedly with age: survival was highest for children aged 1-4 and 5-9 years, and lowest for infants (younger than 1 year). There was no systematic difference in survival between boys and girls. Interpretation Global inequalities in survival from childhood leukaemia have narrowed with time but remain very wide for both ALL and AML. These results provide useful information for health policy makers on the effectiveness of health-care systems and for cancer policy makers to reduce inequalities in childhood survival

Global surveillance of cancer survival 1995-2009: analysis of individual data for 25,676,887 patients from 279 population-based registries in 67 countries (CONCORD-2)

BACKGROUND: Worldwide data for cancer survival are scarce. We aimed to initiate worldwide surveillance of cancer survival by central analysis of population-based registry data, as a metric of the effectiveness of health systems, and to inform global policy on cancer control. METHODS: Individual tumour records were submitted by 279 population-based cancer registries in 67 countries for 25·7 million adults (age 15-99 years) and 75,000 children (age 0-14 years) diagnosed with cancer during 1995-2009 and followed up to Dec 31, 2009, or later. We looked at cancers of the stomach, colon, rectum, liver, lung, breast (women), cervix, ovary, and prostate in adults, and adult and childhood leukaemia. Standardised quality control procedures were applied; errors were corrected by the registry concerned. We estimated 5-year net survival, adjusted for background mortality in every country or region by age (single year), sex, and calendar year, and by race or ethnic origin in some countries. Estimates were age-standardised with the International Cancer Survival Standard weights. FINDINGS: 5-year survival from colon, rectal, and breast cancers has increased steadily in most developed countries. For patients diagnosed during 2005-09, survival for colon and rectal cancer reached 60% or more in 22 countries around the world; for breast cancer, 5-year survival rose to 85% or higher in 17 countries worldwide. Liver and lung cancer remain lethal in all nations: for both cancers, 5-year survival is below 20% everywhere in Europe, in the range 15-19% in North America, and as low as 7-9% in Mongolia and Thailand. Striking rises in 5-year survival from prostate cancer have occurred in many countries: survival rose by 10-20% between 1995-99 and 2005-09 in 22 countries in South America, Asia, and Europe, but survival still varies widely around the world, from less than 60% in Bulgaria and Thailand to 95% or more in Brazil, Puerto Rico, and the USA. For cervical cancer, national estimates of 5-year survival range from less than 50% to more than 70%; regional variations are much wider, and improvements between 1995-99 and 2005-09 have generally been slight. For women diagnosed with ovarian cancer in 2005-09, 5-year survival was 40% or higher only in Ecuador, the USA, and 17 countries in Asia and Europe. 5-year survival for stomach cancer in 2005-09 was high (54-58%) in Japan and South Korea, compared with less than 40% in other countries. By contrast, 5-year survival from adult leukaemia in Japan and South Korea (18-23%) is lower than in most other countries. 5-year survival from childhood acute lymphoblastic leukaemia is less than 60% in several countries, but as high as 90% in Canada and four European countries, which suggests major deficiencies in the management of a largely curable disease. INTERPRETATION: International comparison of survival trends reveals very wide differences that are likely to be attributable to differences in access to early diagnosis and optimum treatment. Continuous worldwide surveillance of cancer survival should become an indispensable source of information for cancer patients and researchers and a stimulus for politicians to improve health policy and health-care systems

La presencia latinoamericana en el Consejo de Seguridad de las Naciones Unidas

El Consejo de Seguridad de las Naciones de Unidas es un órgano de radical importancia no solo para la institucionalidad, sino para la comunidad internacional en general. Importancia que le da el documento insignia de esta institución, la Carta de las Naciones Unidas, en donde su principal propósito de mantener la paz y seguridad internacionales, se le imputa como objetivo especifico al Consejo de Seguridad1 . En ella se dispone que todos los Estados miembros están obligados a acatar las decisiones que éste tome (Art. 25 Carta de las Naciones Unidas) y los Estados no miembros, en caso de estar en un conflicto que competa al Consejo, también deben cumplir con lo establecido sin importar su condición de no membresía