Juntas pelo cuidado solidário da vida: uma proposta de educação popular ambiental em diálogo com os feminismos comunitários

This article presents reflections derived from the popular praxis carried out by urban women at the Titiribiblioteca Community Library with children and neighbors in Commune 8 of Ibagué. This proposal is centered on promoting, through arts and grassroots research, the restoration of the Hato de la Virgen micro-watershed, an ecosystem heavily degraded as it receives over 70% of the city's rainwater and sewage. Drawing from environmental popular education, we delve into the Think-Act approach of 2021 named "Together for the Solidary Care of Life" to highlight and identify the strides made from the epistemological and political perspectives of community feminisms.Este artículo expone las reflexiones derivadas de la praxis popular que adelantamos mujeres urbanas desde la Titiribiblioteca Comunitaria con niños, niñas y vecinas en la comuna 8 de Ibagué. Propuesta enfocada en promover, a partir de las artes y la investigación popular, la recuperación de la microcuenca Hato de la Virgen, un ecosistema altamente degradado, por ser receptor de más del 70% de aguas lluvias y de alcantarillado de la ciudad. A partir de la educación popular ambiental, nos aventuramos a exponer el Pensar-hacer del año 2021 denominado “Juntas por el Cuidado Solidario de la Vida”, para nombrar e identificar los alcances emprendidos en las perspectivas epistemológicas y políticas de los feminismos comunitarios.  Este artigo expõe as reflexões derivadas da prática popular que nós, mulheres urbanas, desenvolvemos na "Titiribiblioteca Comunitária" com crianças e vizinhas na comuna 8 de Ibagué. Uma proposta focada em promover, através das artes e da pesquisa popular, a recuperação da microbacia Hato de la Virgen, um ecossistema altamente degradado, por receber mais de 70% das águas pluviais e do esgoto da cidade. A partir da educação popular ambiental, nos arriscamos a apresentar o Pensar-Fazer do ano 2021 chamado "Juntas pelo Cuidado Solidário da Vida", para nomear e identificar os avanços empreendidos nas perspectivas epistemológicas e políticas dos feminismos comunitários

Microalgae Cultivation for Secondary Metabolite Production

Microalgae including cyanobacteria have been recognized as an excellent source of fine chemicals, renewable fuels, vitamins, and proteins and usually are found in health food stores around the world. However, the accumulation of these compounds generally occurs at end of the exponential growth phase; furthermore, biomass density in cultivation commonly is low. Open cultures have been used for pigment, biofuels, and biomass production, but these types of culture system are not a good choice for the production of fine chemicals, due to contamination problems and the expensive production costs. Closed photobioreactors can be operated in a continuous cultivation providing an increase on biomass density and contamination-free condition and generally working at a maximum growth rate under specific conditions; besides, these systems can recycle the consumed culture medium at least three times before a new enriched medium is supplied, generating a more cost-effective production system. In addition, microalgae metabolism can be manipulated to provoke a specific secondary metabolite accumulation by the addition of organic carbon source or changing light intensity or both. In other words, photobioreactors can operate in continuous mode, with efficient light supply and the supplementation of organic carbon source to produce fine biochemicals such as anticancer, antibacterial, antioxidant, lectins, antiviral compounds, and biofuels

Trans fat consumption and its impact on malnutrition in University Students of the Higher Education System (Canton Milagro)

Esta investigación tuvo como objetivo identificar los patrones de alimentación referente al consumo de grasas trans, y como incide en la aparición de problemas de salud como es la desnutrición, afectando el rendimiento académico de los estudiantes del Sistema de Educación Superior del Cantón Milagro. Por lo cual permite conocer el nivel de conocimiento y concientización por parte de esta población vulnerable, y como consiguiente, implementar medidas preventivas para evitar posibles enfermedades y problemas en la salud, como lo es la desnutrición. Todos los datos recolectados y las investigaciones realizadas, han manifestado que existe una gran cantidad de estudiantes universitarios que tienen como estilo de vida el alto consumo de alimentos ricos en grasas trans, los mismos que ya padecen de problemas nutricionales, por lo cual, se encuentran afectados académicamente. Para esta investigación se tomó una población de 11.042 estudiantes universitarios, con una muestra de 372; la misma que tuvo un enfoque mixto, de carácter descriptivo y corte transversal. Para la obtención de toda esta información se realizó una revisión bibliográfica y la aplicación de una encuesta con preguntas referidas al tema a investigar; lo cual arrojó resultados comprometedores y a la vez esperados.    The objective of this research was to identify feeding patterns related to the consumption of trans fats, and how it affects the appearance of health problems such as malnutrition, affecting the academic performance of students of the Higher Education System of Canton Milagro. Therefore, it allows us to know the level of knowledge and awareness on the part of this vulnerable population, and as a result, implement preventive measures to avoid possible diseases and health problems, such as malnutrition. All the data collected and the research conducted have shown that there is a large number of university students whose lifestyle is the high consumption of foods rich in trans fats, the same ones that already suffer from nutritional problems, which is why they are affected academically. For this research a population of 11,042 university students was taken, with a sample of 372; the same one that had a mixed approach of an exploratory nature. In order to obtain all this information, a bibliographic review and the application of a survey with questions related to the subject to be investigated were carried out; which yielded compromising results and at the same time expected

Performance of cervical cytology and HPV testing for primary cervical cancer screening in Latin America : an analysis within the ESTAMPA study

Corresponding author. E-mail address: [email protected] (A.T. Ramírez).Background. Cervical cytology remains widely used as the initial tool in cervical cancer screening worldwide. WHO guidelines recommend replacing cytology with primary HPV testing to reach cervical cancer elimination goals. We assessed the performance of cytology and high-risk HPV testing to detect cervical precancer, cervical intraepithelial neoplasia (CIN) grade 3 or worse (CIN3+) among women aged 30–64 years participating in the ESTAMPA study. Methods. Women were screened with cytology and HPV across ESTAMPA study centres in Latin America. Screen-positives were referred to colposcopy with biopsy collection and treatment as needed. Those with no evident precancer were recalled at 18-months for a second HPV test to complete disease ascertainment. Performance indicators for cytology and HPV to detect CIN3+ were estimated. Findings. 30,606 participants with available cytology and HPV results were included in the analysis. A total of 440 histologically confirmed CIN3s and 30 cancers were diagnosed. Cytology sensitivity for CIN3+ was 48.5% (95% CI: 44.0–53.0), whereas HPV testing had a sensitivity of 98.1% (95% CI: 96.3–96.7). Specificity was 96.5% (95% CI: 96.3–96.7) using cytology and 88.7% (95% CI: 88.3–89.0) with HPV. Performance estimates varied substantially by study centre for cytology (ranging from 32.1% to 87.5% for sensitivity and from 89.2% to 99.5% for specificity) while for HPV results were more consistent across sites (96.7%–100% and 83.6–90.8%, respectively). Interpretation. The limited and highly variable sensitivity of cytology strongly supports transition to the more robust and reproducible HPV-based cervical screening to ensure progress towards global cervical cancer elimination targets in Latin America.Consejo Nacional de Ciencia y TecnologíaPrograma Paraguayo para el Desarrollo de la Ciencia y Tecnología. Proyectos de investigación y desarroll

Combined searches for the production of supersymmetric top quark partners in proton-proton collisions at root s=13 TeV

A combination of searches for top squark pair production using proton-proton collision data at a center-of-mass energy of 13 TeV at the CERN LHC, corresponding to an integrated luminosity of 137 fb(-1) collected by the CMS experiment, is presented. Signatures with at least 2 jets and large missing transverse momentum are categorized into events with 0, 1, or 2 leptons. New results for regions of parameter space where the kinematical properties of top squark pair production and top quark pair production are very similar are presented. Depending on themodel, the combined result excludes a top squarkmass up to 1325 GeV for amassless neutralino, and a neutralinomass up to 700 GeV for a top squarkmass of 1150 GeV. Top squarks with masses from 145 to 295 GeV, for neutralino masses from 0 to 100 GeV, with a mass difference between the top squark and the neutralino in a window of 30 GeV around the mass of the top quark, are excluded for the first time with CMS data. The results of theses searches are also interpreted in an alternative signal model of dark matter production via a spin-0 mediator in association with a top quark pair. Upper limits are set on the cross section for mediator particle masses of up to 420 GeV

Measurement of B-c(2S)(+) and B-c*(2S)(+) cross section ratios in proton-proton collisions at root s=13 TeV

Peer reviewe

Measurement of the W gamma Production Cross Section in Proton-Proton Collisions at root s=13 TeV and Constraints on Effective Field Theory Coefficients

A fiducial cross section for W gamma production in proton-proton collisions is measured at a center-of-mass energy of 13 TeV in 137 fb(-1) of data collected using the CMS detector at the LHC. The W -> e nu and mu nu decay modes are used in a maximum-likelihood fit to the lepton-photon invariant mass distribution to extract the combined cross section. The measured cross section is compared with theoretical expectations at next-to-leading order in quantum chromodynamics. In addition, 95% confidence level intervals are reported for anomalous triple-gauge couplings within the framework of effective field theory.Peer reviewe

Reconstruction of signal amplitudes in the CMS electromagnetic calorimeter in the presence of overlapping proton-proton interactions

A template fitting technique for reconstructing the amplitude of signals produced by the lead tungstate crystals of the CMS electromagnetic calorimeter is described. This novel approach is designed to suppress the contribution to the signal of the increased number of out-of-time interactions per beam crossing following the reduction of the accelerator bunch spacing from 50 to 25 ns at the start of Run 2 of the LHC. Execution of the algorithm is sufficiently fast for it to be employed in the CMS high-level trigger. It is also used in the offline event reconstruction. Results obtained from simulations and from Run 2 collision data (2015-2018) demonstrate a substantial improvement in the energy resolution of the calorimeter over a range of energies extending from a few GeV to several tens of GeV.Peer reviewe

Observation of the Production of Three Massive Gauge Bosons at root s=13 TeV

The first observation is reported of the combined production of three massive gauge bosons (VVV with V = W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV. The analysis is based on a data sample recorded by the CMS experiment at the CERN LHC corresponding to an integrated luminosity of 137 fb(-1). The searches for individualWWW, WWZ, WZZ, and ZZZ production are performed in final states with three, four, five, and six leptons (electrons or muons), or with two same-sign leptons plus one or two jets. The observed (expected) significance of the combinedVVV production signal is 5.7 (5.9) standard deviations and the corresponding measured cross section relative to the standard model prediction is 1.02(-0.23)(+0.26). The significances of the individual WWW and WWZ production are 3.3 and 3.4 standard deviations, respectively. Measured production cross sections for the individual triboson processes are also reported

Performance of the CMS muon trigger system in proton-proton collisions at √s = 13 TeV

The muon trigger system of the CMS experiment uses a combination of hardware and software to identify events containing a muon. During Run 2 (covering 2015-2018) the LHC achieved instantaneous luminosities as high as 2 × 10 cm s while delivering proton-proton collisions at √s = 13 TeV. The challenge for the trigger system of the CMS experiment is to reduce the registered event rate from about 40 MHz to about 1 kHz. Significant improvements important for the success of the CMS physics program have been made to the muon trigger system via improved muon reconstruction and identification algorithms since the end of Run 1 and throughout the Run 2 data-taking period. The new algorithms maintain the acceptance of the muon triggers at the same or even lower rate throughout the data-taking period despite the increasing number of additional proton-proton interactions in each LHC bunch crossing. In this paper, the algorithms used in 2015 and 2016 and their improvements throughout 2017 and 2018 are described. Measurements of the CMS muon trigger performance for this data-taking period are presented, including efficiencies, transverse momentum resolution, trigger rates, and the purity of the selected muon sample. This paper focuses on the single- and double-muon triggers with the lowest sustainable transverse momentum thresholds used by CMS. The efficiency is measured in a transverse momentum range from 8 to several hundred GeV