Historia obrera: notes and reflections based on experiences of historical dissemination

El Colectivo Historia Obrera salió a la luz el 29 de mayo de 2020 a partir de la presentación de su sitio web: www.historiaobrera.com.ar Este soporte digital reúne una serie de dispositivos de distinto tipo sobre la historia de lxs trabajadorxs pensados específicamente para públicos amplios, no necesariamente especializados en el estudio de la historia. Las intervenciones realizadas fueron planeadas y producidas transdisciplinariamente por investigadorxs, docentxs, artistas, gestorxs culturales, técnicxs y sindicalistas en una gran variedad de lenguajes y soportes. Desde aquella fecha hasta la actualidad, el colectivo continuó desarrollando su actividad de divulgación histórica sumando experiencias y reflexiones. En este artículo nos focalizaremos de modo sintético en algunas aristas de nuestro proyecto referidas a sus definiciones generales, su funcionamiento, la organización del trabajo, sus concepciones, sus productos y sus prácticas. En este abordaje, haremos hincapié en el proceso de producción y circulación de materiales que hemos desarrollado en estos tres años, así como en nuestro trabajo transdiciplinario.The Historia Obrera Collective came to light on May 29, 2020, with the launch of its website: www.historiaobrera.com.ar This digital platform brings together a range of diverse devices concerning the history of workers, specifically designed for broad audiences, not necessarily specialized in history studies. The various projects undertaken were planned and produced collaboratively by researchers, educators, artists, cultural managers, technicians, and union members, employing a wide array of languages and mediums. Since that date, the collective has continued to develop its historical dissemination activities, incorporating experiences and reflections. This article provides a concise focus on certain aspects of our project, pertaining to its general definitions, functioning, work organization, conceptual framework, products, and practices. Within this approach, we will make reference to the process of material production and circulation that we have developed over these past three years in the project, as well as our transdisciplinary work.Fil: Avalos, Federico. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades; ArgentinaFil: Contreras, Gustavo Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Humanidades y Ciencias Sociales. Universidad Nacional de Mar del Plata. Instituto de Humanidades y Ciencias Sociales; Argentina. Universidad Nacional de Mar del Plata. Facultad de Humanidades. Departamento de Historia. Centro de Estudios Históricos; Argentin

Historia obrera: notes and reflections based on experiences of historical dissemination

El Colectivo Historia Obrera salió a la luz el 29 de mayo de 2020 a partir de la presentación de su sitio web: www.historiaobrera.com.ar Este soporte digital reúne una serie de dispositivos de distinto tipo sobre la historia de lxs trabajadorxs pensados específicamente para públicos amplios, no necesariamente especializados en el estudio de la historia. Las intervenciones realizadas fueron planeadas y producidas transdisciplinariamente por investigadorxs, docentxs, artistas, gestorxs culturales, técnicxs y sindicalistas en una gran variedad de lenguajes y soportes. Desde aquella fecha hasta la actualidad, el colectivo continuó desarrollando su actividad de divulgación histórica sumando experiencias y reflexiones. En este artículo nos focalizaremos de modo sintético en algunas aristas de nuestro proyecto referidas a sus definiciones generales, su funcionamiento, la organización del trabajo, sus concepciones, sus productos y sus prácticas. En este abordaje, haremos hincapié en el proceso de producción y circulación de materiales que hemos desarrollado en estos tres años, así como en nuestro trabajo transdiciplinario.The Historia Obrera Collective came to light on May 29, 2020, with the launch of its website: www.historiaobrera.com.ar This digital platform brings together a range of diverse devices concerning the history of workers, specifically designed for broad audiences, not necessarily specialized in history studies. The various projects undertaken were planned and produced collaboratively by researchers, educators, artists, cultural managers, technicians, and union members, employing a wide array of languages and mediums. Since that date, the collective has continued to develop its historical dissemination activities, incorporating experiences and reflections. This article provides a concise focus on certain aspects of our project, pertaining to its general definitions, functioning, work organization, conceptual framework, products, and practices. Within this approach, we will make reference to the process of material production and circulation that we have developed over these past three years in the project, as well as our transdisciplinary work.Fil: Avalos, Federico. Universidad Nacional de Córdoba. Facultad de Filosofía y Humanidades; ArgentinaFil: Contreras, Gustavo Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Humanidades y Ciencias Sociales. Universidad Nacional de Mar del Plata. Instituto de Humanidades y Ciencias Sociales; Argentina. Universidad Nacional de Mar del Plata. Facultad de Humanidades. Departamento de Historia. Centro de Estudios Históricos; Argentin

Effects of regulated deficit irrigation on physiology, yield and fruit quality in apricot trees under Mediterranean conditions

Scarce water resources mainly in arid and semi-arid areas have caused an increasing interest for applying irrigation protocols aiming to reduce water spends. The effects of regulated deficit irrigation (RDI) on the performance of apricot trees (Prunus armeniaca L. cv. “Búlida”) were assessed in Murcia (SE Spain), during three consecutive growing seasons (2008-2010). The hypothesis was that RDI would not restrict yield but increase fruit quality while saving water. Two irrigation treatments were established: i) control, irrigated to fully satisfy crop water requirements (100% ETc) and ii) RDI, that reduced the amount of applied water to: a) 40% of ETc at flowering and stage I of fruit growth; b) 60% of ETc during the stage II of fruit growth and c) 50% and 25% of ETc during the late postharvest period (from 60 days after harvest). Stem water potential, gas exchanges, trunk cross-sectional area (TCSA), fruit diameter, yield and fruit quality traits were determined. Vegetative growth was decreased by the use of RDI (12% less TCSA on average for the three years), whereas yield was unaffected. In addition, some qualitative characteristics of the fruits, such as the level of soluble solids, sweetness/acidity relation and fruit colour, were improved by the use of RDI. These results and average water savings of approximately 30%, lead us to conclude that RDI strategies are a possible solution for irrigation management in areas with water shortages, such as arid and semi-arid environments

Impacto de la “chinche diminuta” (Nysius sp.) sobre el cultivo de girasol del valle bonaerense del Río Colorado durante 2014/15

Los cultivos de girasol fueron afectados por la denominada “chinche diminuta” que no era considerada plaga. El ataque ocurrió luego de un invierno con escaso número de heladas, lluvias por encima de la media y primavera seca. La chinche diminuta se ubicó preferentemente entre las flores del disco, aunque también lo hizo entre las filarias (brácteas), hojas superiores y el segmento superior del tallo. En el período indicado se alcanzó una incidencia superior a 80 individuos por capítulo. Cuando la floración se atrasó a febrero, la incidencia fue menor a 20 individuos por capítulo.EEA Hilario AscasubiFil: Renzi Pugni, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; ArgentinaFil: Reinoso, Omar Juan. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; ArgentinaFil: Bruna, Matias Nicolas. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; ArgentinaFil: Vasicek, Juan Pablo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi. Agencia de Extensión Rural Medanos; ArgentinaFil: Avalos, M. Asesor privado; ArgentinaFil: Oquiñena, Ariel. Asesor privado; ArgentinaFil: Cantamutto, Miguel Angel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Hilario Ascasubi; Argentina

Early Science with the Oscura Integration Test

Oscura is a planned light-dark matter search experiment using Skipper-CCDs with a total active mass of 10 kg. As part of the detector development, the collaboration plans to build the Oscura Integration Test (OIT), an engineering test experiment with 10% of the Oscura's total mass. Here we discuss the early science opportunities with the OIT to search for millicharged particles (mCPs) using the NuMI beam at Fermilab. mCPs would be produced at low energies through photon-mediated processes from decays of scalar, pseudoscalar, and vector mesons, or direct Drell-Yan productions. Estimates show that the OIT would be a world-leading probe for low-mass mCPs.Comment: 21 pages, 13 figure

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

Correction to: Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

The original version of this article unfortunately contained a mistake

Prevalence, associated factors and outcomes of pressure injuries in adult intensive care unit patients: the DecubICUs study

Funder: European Society of Intensive Care Medicine; doi: http://dx.doi.org/10.13039/501100013347Funder: Flemish Society for Critical Care NursesAbstract: Purpose: Intensive care unit (ICU) patients are particularly susceptible to developing pressure injuries. Epidemiologic data is however unavailable. We aimed to provide an international picture of the extent of pressure injuries and factors associated with ICU-acquired pressure injuries in adult ICU patients. Methods: International 1-day point-prevalence study; follow-up for outcome assessment until hospital discharge (maximum 12 weeks). Factors associated with ICU-acquired pressure injury and hospital mortality were assessed by generalised linear mixed-effects regression analysis. Results: Data from 13,254 patients in 1117 ICUs (90 countries) revealed 6747 pressure injuries; 3997 (59.2%) were ICU-acquired. Overall prevalence was 26.6% (95% confidence interval [CI] 25.9–27.3). ICU-acquired prevalence was 16.2% (95% CI 15.6–16.8). Sacrum (37%) and heels (19.5%) were most affected. Factors independently associated with ICU-acquired pressure injuries were older age, male sex, being underweight, emergency surgery, higher Simplified Acute Physiology Score II, Braden score 3 days, comorbidities (chronic obstructive pulmonary disease, immunodeficiency), organ support (renal replacement, mechanical ventilation on ICU admission), and being in a low or lower-middle income-economy. Gradually increasing associations with mortality were identified for increasing severity of pressure injury: stage I (odds ratio [OR] 1.5; 95% CI 1.2–1.8), stage II (OR 1.6; 95% CI 1.4–1.9), and stage III or worse (OR 2.8; 95% CI 2.3–3.3). Conclusion: Pressure injuries are common in adult ICU patients. ICU-acquired pressure injuries are associated with mainly intrinsic factors and mortality. Optimal care standards, increased awareness, appropriate resource allocation, and further research into optimal prevention are pivotal to tackle this important patient safety threat

Analyse de l'expertise technique et modélisation de la performance au 100 m nage libre féminin

Hellard Philippe, Avalos Marta, Caudal Nicolas. Analyse de l'expertise technique et modélisation de la performance au 100 m nage libre féminin. In: Les Cahiers de l'INSEP, n°34, 2003. Expertise et sport de haut niveau. pp. 249-253

Energy in Fourth Order Gravity

In this paper we make a detailed analysis of conservation principles in the context of a family of fourth-order gravitational theories generated via a quadratic Lagrangian. In particular, we focus on the associated notion of energy and start a program related to its study. We also exhibit examples of solutions which provide intuitions about this notion of energy which allows us to interpret it, and introduce several study cases where its analysis seems tractable. Finally, positive energy theorems are presented in restricted situations.Comment: 5 figures Update of the 17/07/22: correcting typos, streamlining the paper, taking into account/answering interesting questions asked to the authors during conference