La huella del plástico. Una experiencia a partir de la estampación para reflexionar sobre el uso masivo de los plásticos

La gran masificación del uso del plástico es actualmente una de las problemáticas medioambientales más preocupantes y ante ello, es necesario meditar y actuar. El presente artículo reflexiona sobre la omnipresencia del plástico y propone desde la educación artística y con alumnado de la Facultad de Ciencias de la Educación de la Universidad de Granada, una estrategia de estampación para interpretar la saturación del material y su constante presencia en el medioambiente y en nuestro cuerpo. El objetivo principal de la propuesta educativa es emplear las propiedades estéticas del plástico para conferir al material la capacidad de estampar y producir imágenes artísticas relacionadas con esta problemática. Las imágenes obtenidas son analizadas mediante instrumentos desprendidos de las metodologías basadas en artes, que permiten entender el proceso de creación del alumnado desde lo visual y lo sensible, estableciendo un diálogo con otras disciplinas para generar una pieza colaborativa.The great massification of the use of plastic is currently one of the most worrying environmental problems and it is therefore necessary to meditate and act. This article reflects on the omnipresence of plastic and proposes, from the perspective of art education and with students of the Faculty of Educational Sciences of the University of Granada, a printing strategy to interpret the saturation of the material and its constant presence in the environment and in our bodies. The main objective of the educational proposal is to use the aesthetic properties of plastic to give the material the ability to print and produce artistic images related to this problem. The images obtained are analyzed through instruments derived from arts-based methodologies, which allow us to understand the students’ creative process from a visual and sensitive point of view, establishing a dialogue with other disciplines in order to generate a collaborative piece

Spes Nova

En el presente trabajo se dio continuidad al proyecto del semestre Primavera 2023, con la finalidad de cumplir con el objetivo inicial de apoyar artesanos que se encuentren en situación económica escasa, de manera que se dio seguimiento a la comunicación con los artesanos que anteriormente fueron seleccionados, además de integrar a nuevos prospectos, y mientras se garantizaba el cumplimiento del perfil, los estándares de calidad, tiempos de entrega, así como el interés en la exportación de sus productos. Dichos objetivos se alcanzaron a través de un plan de trabajo establecido desde el inicio del período, donde cada integrante del equipo estuvo a cargo de un tema en específico. Estos temas se conforman de la búsqueda de nuevos artesanos, la comunicación con el artesano con el que se llevó a cabo la primera exportación a Spes Nova, así como la presentación de una propuesta comercial a la Tienda Soy ITESO. Es así, entonces que, al finalizar este proyecto, fue posible identificar más artesanos con el perfil buscado y sumarlos tanto a la propuesta comercial con Spes Nova, como a la Tienda Soy ITESO. Además, se establecieron las pautas para desarrollar una extensión de Spes Nova en México, donde sea posible ampliar la red comercial de los artesanos dentro del mercado mexicano.ITESO, A.C

Promastigote EPS secretion and haptomonad biofilm formation as evolutionary adaptations of trypanosomatid parasites for colonizing honeybee hosts

Bees are major pollinators involved in the maintenance of all terrestrial ecosystems. Biotic and abiotic factors placing these insects at risk is a research priority for ecological and agricultural sustainability. Parasites are one of the key players of this global decline and the study of their mechanisms of action is essential to control honeybee colony losses. Trypanosomatid parasites and particularly the Lotmaria passim are widely spread in honeybees, however their lifestyle is poorly understood. In this work, we show how these parasites are able to differentiate into a new parasitic lifestyle: the trypanosomatid biofilms. Using different microscopic techniques, we demonstrated that the secretion of Extracellular Polymeric Substances by free-swimming unicellular promastigote forms is a prerequisite for the generation and adherence of multicellular biofilms to solid surfaces in vitro and in vivo. Moreover, compared to human-infective trypanosomatid parasites our study shows how trypanosomatid parasites of honeybees increases their resistance and thus resilience to drastic changes in environmental conditions such as ultralow temperatures and hypoosmotic shock, which would explain their success thriving within or outside their hosts. These results set up the basis for the understanding of the success of this group of parasites in nature and to unveil the impact of such pathogens in honeybees, a keystones species in most terrestrial ecosystems.Spanish Programme for Knowledge Generation and Scientific and Technological Strengthening of the R+D+I System, grant PID2021-126938OB-I00 funded by MCIN/AEI/10.13039/501100011033 and by "ERDF/EU"Grant PGC2018-098929-A-I00 funded by MCIN/AEI/10.13039/501100011033 and by "ERDF A way of making Europe"Maria Zambrano postdoctoral fellowship program of the Spanish Ministry of Science, Innovation and Universities (RD289/2021)Doctoral Program in Fundamental and Systems Biology (University of Granada, UGR

Measurement of t(t)over-bar normalised multi-differential cross sections in pp collisions at root s=13 TeV, and simultaneous determination of the strong coupling strength, top quark pole mass, and parton distribution functions

Peer reviewe

Measurement of the Splitting Function in &ITpp &ITand Pb-Pb Collisions at root&ITsNN&IT=5.02 TeV

Data from heavy ion collisions suggest that the evolution of a parton shower is modified by interactions with the color charges in the dense partonic medium created in these collisions, but it is not known where in the shower evolution the modifications occur. The momentum ratio of the two leading partons, resolved as subjets, provides information about the parton shower evolution. This substructure observable, known as the splitting function, reflects the process of a parton splitting into two other partons and has been measured for jets with transverse momentum between 140 and 500 GeV, in pp and PbPb collisions at a center-of-mass energy of 5.02 TeV per nucleon pair. In central PbPb collisions, the splitting function indicates a more unbalanced momentum ratio, compared to peripheral PbPb and pp collisions.. The measurements are compared to various predictions from event generators and analytical calculations.Peer reviewe

An embedding technique to determine ττ backgrounds in proton-proton collision data

An embedding technique is presented to estimate standard model tau tau backgrounds from data with minimal simulation input. In the data, the muons are removed from reconstructed mu mu events and replaced with simulated tau leptons with the same kinematic properties. In this way, a set of hybrid events is obtained that does not rely on simulation except for the decay of the tau leptons. The challenges in describing the underlying event or the production of associated jets in the simulation are avoided. The technique described in this paper was developed for CMS. Its validation and the inherent uncertainties are also discussed. The demonstration of the performance of the technique is based on a sample of proton-proton collisions collected by CMS in 2017 at root s = 13 TeV corresponding to an integrated luminosity of 41.5 fb(-1).Peer reviewe

Search for dark matter in events with a leptoquark and missing transverse momentum in proton-proton collisions at 13 TeV

A search is presented for dark matter in proton-proton collisions at a center-of-mass energy of root s= 13 TeV using events with at least one high transverse momentum (p(T)) muon, at least one high-p(T) jet, and large missing transverse momentum. The data were collected with the CMS detector at the CERN LHC in 2016 and 2017, and correspond to an integrated luminosity of 77.4 fb(-1). In the examined scenario, a pair of scalar leptoquarks is assumed to be produced. One leptoquark decays to a muon and a jet while the other decays to dark matter and low-p(T) standard model particles. The signature for signal events would be significant missing transverse momentum from the dark matter in conjunction with a peak at the leptoquark mass in the invariant mass distribution of the highest p(T) muon and jet. The data are observed to be consistent with the background predicted by the standard model. For the first benchmark scenario considered, dark matter masses up to 500 GeV are excluded for leptoquark masses m(LQ) approximate to 1400 GeV, and up to 300 GeV for m(LQ) approximate to 1500 GeV. For the second benchmark scenario, dark matter masses up to 600 GeV are excluded for m(LQ) approximate to 1400 GeV. (C) 2019 The Author(s). Published by Elsevier B.V.Peer reviewe

Bose-Einstein correlations of charged hadrons in proton-proton collisions at s\sqrt s = 13 TeV

Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at $\sqrt{s}$ = 7 TeV, as well as with theoretical predictions.[graphic not available: see fulltext]Bose-Einstein correlations of charged hadrons are measured over a broad multiplicity range, from a few particles up to about 250 reconstructed charged hadrons in proton-proton collisions at $\sqrt{s} =$ 13 TeV. The results are based on data collected using the CMS detector at the LHC during runs with a special low-pileup configuration. Three analysis techniques with different degrees of dependence on simulations are used to remove the non-Bose-Einstein background from the correlation functions. All three methods give consistent results. The measured lengths of homogeneity are studied as functions of particle multiplicity as well as average pair transverse momentum and mass. The results are compared with data from both CMS and ATLAS at $\sqrt{s} =$ 7 TeV, as well as with theoretical predictions

Search for an L-mu - L-tau gauge boson using Z -> 4 mu events in proton-proton collisions at root s=13 TeV

A search for a narrow Z' gauge boson with a mass between 5 and 70 GeV resulting from an L-mu - L-tau U (1) local gauge symmetry is reported. Theories that predict such a particle have been proposed as an explanation of various experimental discrepancies, including the lack of a dark matter signal in direct-detection experiments, tension in the measurement of the anomalous magnetic moment of the muon, and reports of possible lepton flavor universality violation in B meson decays. A data sample of proton-proton collisions at a center-of-mass energy of 13 TeV is used, corresponding to an integrated luminosity of 77.3 fb(-1) recorded in 2016 and 2017 by the CMS detector at the LHC. Events containing four muons with an invariant mass near the standard model Z boson mass are analyzed, and the selection is further optimized to be sensitive to the events that may contain Z -> Z'mu mu -> 4 mu decays. The event yields are consistent with the standard model predictions. Upper limits of 10(-8)-10(-7) at 95% confidence level are set on the product of branching fractions B(Z -> Z'mu mu)B(Z' -> mu mu), depending on the Z' mass, which excludes a Z' boson coupling strength to muons above 0.004-0.3. These are the first dedicated limits on L-mu - L-tau models at the LHC and result in a significant increase in the excluded model parameter space. The results of this search may also be used to constrain the coupling strength of any light Z' gauge boson to muons. (C) 2019 The Author(s). Published by Elsevier B.V.Peer reviewe