Implementación de un sistema de producción más limpia en el Centro de Servicios Técnicos y Transferencia Tecnológica Ambiental CESTTA.

Se implementó un Sistema de Producción Más Limpia en el Centro de Servicios Técnicos y Transferencia Tecnológica Ambiental CESTTA, con la finalidad de reducir gastos en recursos hídricos, eléctricos y materiales de oficina, se utilizó una técnica in situ, determinada por el Programa de las Naciones Unidas para el Medio Ambiente (PNUMA), la cual mediante encuestas hacia el personal, observación directa y revisión de planillas, nos indicó las áreas de trabajo para este proyecto, pudimos unificar las conceptos junto a los Sistemas de Gestión Ambiental, garantizando así el mejoramiento del sistema al hacerlo de forma cíclica con actividades sencillas como lo son Revisar, Planificar, Controlar, Implementar, después de la ejecución del Plan se evidencio el gasto innecesario de aproximadamente 200 kilovatios de energía eléctrica al mes, 828 litros de agua al día o 16,6 m3 al mes, y, 4 resmas de papel, entre otros aspectos mejorables dentro del laboratorio el cual al ser un líder a nivel nacional, en su búsqueda de la excelencia se ha visto en la necesidad de implementar medidas que ayuden a fortalecer su imagen, como lo es la implementación de un sistema de Producción Más Limpia, donde necesitamos la capacitación hacia el personal, , mejoras tecnológicas , luminarias ecoamiagables de tipo LED, batería sanitarias que ahorran el 70% de consumo de agua, grifería de Dispersión, y un manual de buenas prácticas ambientales, la Producción Más Limpia es una herramienta eficaz dentro de las grandes, medianas y pequeñas empresas, ya que brinda un servicio de optimización en los procesos, con una visión de ahorro e ingresos para la empresa, es ejecutada priorizando las necesidades de la empresa, tomando en cuenta la Vialidad técnica, económica y ambiental.A Cleaner Production System was implemented in the Technical Services and Environmental Technology Transfer Center CESTTA, in order to reduce expenditure on water resources, electrical and office materials, an on-site technique was used, determined by the Program of the United Nations for the Environment (PNUMA), which through surveys to the staff, direct observation and review of templates, It was indicated the work areas for this project, It could unify the concepts together with the Environmental Management Systems, thus ensuring the improvement of the system by doing so in a cyclical manner with simple activities such as Review, Plan, Control, Implement, after the execution of the Plan, the unnecessary expenditure of approximately 200 kilowatts of electric power per month, 828 liters of water was evidenced a day or 16.6m3 a month, and, 4 reams of paper, among other aspects that can be improved within the laboratory in which Being a national leader, in its search for excellence has seen the need to implement measures that help strengthen its image, such as the implementation of a Cleaner Production System, where it need training for staff, technological improvements, eco-friendly luminaires of LED type, sanitary batteries that save 70% of water consumption, Dispersion faucets, and a manual of good environmental practices, Cleaner Production is an effective tool within the large, medium and small Companies, since it provides an optimization service in the processes, with a vision of savings and income for the company, it is executed prioritizing the needs of the company, taking into account the technical, economic and environmental Roads

International collaborative project to compare and track the nutritional composition of fast foods

Background: Chronic diseases are the leading cause of premature death and disability in the world with over-nutrition a primary cause of diet-related ill health. Excess quantities of energy, saturated fat, sugar and salt derived from fast foods contribute importantly to this disease burden. Our objective is to collate and compare nutrient composition data for fast foods as a means of supporting improvements in product formulation. METHODS/DESIGN: Surveys of fast foods will be done in each participating country each year. Information on the nutrient composition for each product will be sought either through direct chemical analysis, from fast food companies, in-store materials or from company websites. Foods will be categorized into major groups for the primary analyses which will compare mean levels of saturated fat, sugar, sodium, energy and serving size at baseline and over time. Countries currently involved include Australia, New Zealand, France, UK, USA, India, Spain, China and Canada, with more anticipated to follow. DISCUSSION: This collaborative approach to the collation and sharing of data will enable low-cost tracking of fast food composition around the world. This project represents a significant step forward in the objective and transparent monitoring of industry and government commitments to improve the quality of fast foods.E Dunford is supported by a Sydney Medical School Foundation scholarship and B Neal by an Australian Research Council Future Fellowship.http://www.biomedcentral.com/1471-2458/12/559am201

Measurement of the top quark forward-backward production asymmetry and the anomalous chromoelectric and chromomagnetic moments in pp collisions at √s = 13 TeV

Abstract The parton-level top quark (t) forward-backward asymmetry and the anomalous chromoelectric (d̂ t) and chromomagnetic (μ̂ t) moments have been measured using LHC pp collisions at a center-of-mass energy of 13 TeV, collected in the CMS detector in a data sample corresponding to an integrated luminosity of 35.9 fb−1. The linearized variable AFB(1) is used to approximate the asymmetry. Candidate t t ¯ events decaying to a muon or electron and jets in final states with low and high Lorentz boosts are selected and reconstructed using a fit of the kinematic distributions of the decay products to those expected for t t ¯ final states. The values found for the parameters are AFB(1)=0.048−0.087+0.095(stat)−0.029+0.020(syst),μ̂t=−0.024−0.009+0.013(stat)−0.011+0.016(syst), and a limit is placed on the magnitude of | d̂ t| < 0.03 at 95% confidence level. [Figure not available: see fulltext.

MUSiC : a model-unspecific search for new physics in proton-proton collisions at root s=13TeV

Results of the Model Unspecific Search in CMS (MUSiC), using proton-proton collision data recorded at the LHC at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb(-1), are presented. The MUSiC analysis searches for anomalies that could be signatures of physics beyond the standard model. The analysis is based on the comparison of observed data with the standard model prediction, as determined from simulation, in several hundred final states and multiple kinematic distributions. Events containing at least one electron or muon are classified based on their final state topology, and an automated search algorithm surveys the observed data for deviations from the prediction. The sensitivity of the search is validated using multiple methods. No significant deviations from the predictions have been observed. For a wide range of final state topologies, agreement is found between the data and the standard model simulation. This analysis complements dedicated search analyses by significantly expanding the range of final states covered using a model independent approach with the largest data set to date to probe phase space regions beyond the reach of previous general searches.Peer reviewe

Search for new particles in events with energetic jets and large missing transverse momentum in proton-proton collisions at root s=13 TeV

A search is presented for new particles produced at the LHC in proton-proton collisions at root s = 13 TeV, using events with energetic jets and large missing transverse momentum. The analysis is based on a data sample corresponding to an integrated luminosity of 101 fb(-1), collected in 2017-2018 with the CMS detector. Machine learning techniques are used to define separate categories for events with narrow jets from initial-state radiation and events with large-radius jets consistent with a hadronic decay of a W or Z boson. A statistical combination is made with an earlier search based on a data sample of 36 fb(-1), collected in 2016. No significant excess of events is observed with respect to the standard model background expectation determined from control samples in data. The results are interpreted in terms of limits on the branching fraction of an invisible decay of the Higgs boson, as well as constraints on simplified models of dark matter, on first-generation scalar leptoquarks decaying to quarks and neutrinos, and on models with large extra dimensions. Several of the new limits, specifically for spin-1 dark matter mediators, pseudoscalar mediators, colored mediators, and leptoquarks, are the most restrictive to date.Peer reviewe

Measurement of prompt open-charm production cross sections in proton-proton collisions at root s=13 TeV

The production cross sections for prompt open-charm mesons in proton-proton collisions at a center-of-mass energy of 13TeV are reported. The measurement is performed using a data sample collected by the CMS experiment corresponding to an integrated luminosity of 29 nb(-1). The differential production cross sections of the D*(+/-), D-+/-, and D-0 ((D) over bar (0)) mesons are presented in ranges of transverse momentum and pseudorapidity 4 < p(T) < 100 GeV and vertical bar eta vertical bar < 2.1, respectively. The results are compared to several theoretical calculations and to previous measurements.Peer reviewe