La economía circular: una oportunidad de negocio en entornos insulares, analizando el caso de E-Waste Canarias S.L.

En este Trabajo de Fin de Grado se muestran diferentes aspectos relacionados con la Economía Circular, que surge como un modelo económico sostenible que evita el agotamiento masivo de los recursos naturales producido por el actual modelo lineal. A raíz de ello, han surgido nuevas ideas empresariales, y es por ello, que se ha realizado un estudio de diversos proyectos desarrollados y de los conceptos económico-financieros más relevantes. Este estudio tiene como principal objetivo determinar si estos modelos de negocio llevados a cabo en entornos insulares, como las Islas Canarias, constituyen una buena oportunidad de negocio o no, valorando los beneficios socio-económicos que genera este tipo de economía. Para ello, se ha consultado principalmente la base de datos SABI. Entre los resultados más importantes se verifica que la Economía Circular puede ser una oportunidad de negocio rentable, y que además logra beneficios sociales gracias a la creación de puestos de trabajo.In this Final Degree Project, different aspects related to the Circular Economy are shown, which emerge as a sustainable economic model that avoids the massive depletion of natural resources produced by the current linear model. As a result, new business ideas have emerged, and it is for this reason that a study of various developed projects and of the most relevant economic-financial concepts has been carried out. The main objective of this study is to determine whether these business models carried out in island environments, such as the Canary Islands, constitute a good business opportunity or not, assessing the socio-economic benefits generated by this type of economy. For this, the SABI database has been consulted mainly. Among the most important results, it is verified that the Circular Economy can be a profitable business opportunity, and that it also achieves social benefits thanks to the creation of jobs

BOSS Great Wall: morphology, luminosity, and mass

We study the morphology, luminosity and mass of the superclusters from the BOSS Great Wall (BGW), a recently discovered very rich supercluster complex at the redshift $z = 0.47$. We have employed the Minkowski functionals to quantify supercluster morphology. We calculate supercluster luminosities and masses using two methods. Firstly, we used data about the luminosities and stellar masses of high stellar mass galaxies with $\log(M_*/h^{-1}M_\odot) \geq 11.3$. Secondly, we applied a scaling relation that combines morphological and physical parameters of superclusters to obtain supercluster luminosities, and obtained supercluster masses using the mass-to-light ratios found for local rich superclusters. We find that the BGW superclusters are very elongated systems, with shape parameter values of less than $0.2$. This value is lower than that found for the most elongated local superclusters. The values of the fourth Minkowski functional $V_3$ for the richer BGW superclusters ($V_3 = 7$ and $10$) show that they have a complicated and rich inner structure. We identify two Planck SZ clusters in the BGW superclusters, one in the richest BGW supercluster, and another in one of the poor BGW superclusters. The luminosities of the BGW superclusters are in the range of $1 - 8\times~10^{13}h^{-2}L_\odot$, and masses in the range of $0.4 - 2.1\times~10^{16}h^{-1}M_\odot$. Supercluster luminosities and masses obtained with two methods agree well. We conclude that the BGW is a complex of massive, luminous and large superclusters with very elongated shape. The search and detailed study, including the morphology analysis of the richest superclusters and their complexes from observations and simulations can help us to understand formation and evolution of the cosmic web.Comment: Comments: 10 pages, 2 figures, A&A, in pres

Technological evolution and food allergies: issues of threats or contributions to the consumer? Evolução tecnológica e alergias alimentares: matérias de ameaças ou contribuições para o consumidor?

Objective: To verify through a review of scientific literature, whether industrial and technological developments are directly related to the increase and prevalence of food allergies or whether it has contributed to the quality of life of allergic consumers. Methods: Searches were carried out in the Scielo (Scientific Electronic Library Online), Google Scholar, Lilacs (Latin American and Caribbean Health Sciences Literature) and PubMed (National Library of Medicine) databases. Results: The results obtained in the scientific literature identified that the significant increase in food allergies has accompanied the technological process, due to the greater consumption of food additives in ultra-processed products, but environmental influences such as dietary factors and lifestyle are also involved in the higher incidence of allergies. On the other hand, technological advances have collaborated with alternative food products for this specific population group by offering foods with reduction or exemption of allergenic compounds produced by different processing techniques or supported by biotechnology and other sciences. Final considerations: As claims for products free from allergenic compounds become mandatory, the food industry must make investments aimed at studies and production of safe alternative foods for allergic consumers

The High-Mass End of the Red Sequence at z~0.55 from SDSS-III/BOSS: completeness, bimodality and luminosity function

We have developed an analytical method based on forward-modeling techniques to characterize the high-mass end of the red sequence (RS) galaxy population at redshift $z\sim0.55$, from the DR10 BOSS CMASS spectroscopic sample, which comprises $\sim600,000$ galaxies. The method, which follows an unbinned maximum likelihood approach, allows the deconvolution of the intrinsic CMASS colour-colour-magnitude distributions from photometric errors and selection effects. This procedure requires modeling the covariance matrix for the i-band magnitude, g-r colour and r-i colour using Stripe 82 multi-epoch data. Our results indicate that the error-deconvolved intrinsic RS distribution is consistent, within the photometric uncertainties, with a single point ($<0.05~{\rm{mag}}$) in the colour-colour plane at fixed magnitude, for a narrow redshift slice. We have computed the high-mass end ($^{0.55}M_i \lesssim -22$) of the $^{0.55}i$-band RS Luminosity Function (RS LF) in several redshift slices within the redshift range $0.52<z<0.63$. In this narrow redshift range, the evolution of the RS LF is consistent, within the uncertainties in the modeling, with a passively-evolving model with $\Phi_* = (7.248 \pm 0.204) \times10^{-4}$ Mpc$^{-3}$ mag$^{-1}$, fading at a rate of $1.5\pm0.4$ mag per unit redshift. We report RS completeness as a function of magnitude and redshift in the CMASS sample, which will facilitate a variety of galaxy-evolution and clustering studies using BOSS. Our forward-modeling method lays the foundations for future studies using other dark-energy surveys like eBOSS or DESI, which are affected by the same type of photometric blurring/selection effects.Comment: 27 pages, 20 figures, accepted for publication in MNRA

The correlation between halo mass and stellar mass for the most massive galaxies in the universe

I.Z. is supported by NSF grant AST-1612085. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah.We present measurements of the clustering of galaxies as a function of their stellar mass in the Baryon Oscillation Spectroscopic Survey. We compare the clustering of samples using 12 different methods for estimating stellar mass, isolating the method that has the smallest scatter at fixed halo mass. In this test, the stellar mass estimate with the smallest errors yields the highest amplitude of clustering at fixed number density. We find that the PCA stellar masses of Chen et al. clearly have the tightest correlation with halo mass. The PCA masses use the full galaxy spectrum, differentiating them from other estimates that only use optical photometric information. Using the PCA masses, we measure the large-scale bias as a function of M∗ for galaxies with log M∗ ≥ 11.4, correcting for incompleteness at the low-mass end of our measurements. Using the abundance matching ansatz to connect dark matter halo mass to stellar mass, we construct theoretical models of b (M∗) that match the same stellar mass function but have different amounts of scatter in stellar mass at fixed halo mass, σlog M∗. Using this approach, we find σlogM∗ =  0.18 -0.02 +0.01. This value includes both intrinsic scatter as well as random errors in the stellar masses. To partially remove the latter, we use repeated spectra to estimate statistical errors on the stellar masses, yielding an upper limit to the intrinsic scatter of 0.16 dex.Publisher PDFPeer reviewe

Phasic left atrial strain to predict worsening of diastolic function: Results from the prospective Berlin Female Risk Evaluation follow-up trial

Purpose: The predictive value of maximum left atrial volume index (LAVI), phasic left atrial strain (LAS) and other standard echocardiographic parameters assessing left ventricular (LV) diastolic function to discriminate a future worsening of diastolic function (DD) in patients at risk is unclear. We aimed to prospectively assess and compare the clinical impact of these parameters in a randomly selected study sample of the general urban female population. Methods and results: A comprehensive clinical and echocardiographic evaluation was performed in 256 participants of the Berlin Female Risk Evaluation (BEFRI) trial after a mean follow up time of 6.8 years. After an assessment of participants' current DD status, the predictive impact of an impaired LAS on the course of DD was assessed and compared with LAVI and other DD parameters using receiver operating characteristic (ROC) curve and multivariate logistic regression analyses. Subjects with no DD (DD0) who showed a decline of diastolic function by the time of follow-up showed a reduced LA reservoir (LASr) and conduit strain (LAScd) compared to subjects who remained in the healthy range (LASr 28.0% +/- 7.0 vs. 41.9% +/- 8.5; LAScd -13.2% +/- 5.1 vs. -25.4% +/- 9.1; p < 0.001). With an area under the curve (AUC) of 0.88 (95%CI 0.82-0.94) and 0.84 (95%CI 0.79-0.89), LASr and LAScd exhibited the highest discriminative value in predicting worsening of diastolic function, whereas LAVI was only of limited prognostic value [AUC 0.63 (95%CI 0.54-0.73)]. In logistic regression analyses, LAS remained a significant predictor for a decline of diastolic function after controlling for clinical and standard echocardiographic DD parameters, indicating its incremental predictive value. Conclusion: The analysis of phasic LAS may be useful to predict worsening of LV diastolic function in DD0 patients at risk for a future DD development.GRAPHICAL ABSTRAC

Estudo da vida de prateleira da bebida mista de goiaba com água de coco, sem adição de sacarose e conservantes

: In the beverage industry, Brazil follows the worldwide trend of consuming healthy foods that offer health, convenience, innovation and pleasure. Therefore, the objective of this project was to study the stability of a guava and green coconut water drink, without sucrose and preservatives, bottled by thermal and aseptic processes, verifying its shelf life through physicochemical, microbiological and sensory analyzes for at least 17 days. The mixed beverage formulation was 35% guava pulp and 65% coconut water, two samples pasteurized at 90 °C/1 minute and packaged in glass (T90v) and polyethylene terephthalate (PET) (T90p), the third pasteurized sample at 98 °C/10 minutes was filled into glass (T98v) and the fourth untreated sample was filled into PET (Tnat). To study the shelf life of the four mixed guava and coconut water beverages, pH, soluble solids, titratable acidity, sugars and vitamin C, microbiological and sensory analyzes were performed. In the physicochemical analyzes the oscillations were low in the two days (5º e 17º) analyzed. The Tnat sample presented total coliform counts on the 17th day of storage, and the T90v, T90p and T98v samples did not count the microorganisms analyzed during the 17 days. Sensory analysis was performed only on the T90v and T90p samples, on the fifth and seventeenth day, and the T90v drink presented better sensory acceptance, regarding the aroma attribute and the overall evaluation, taste perceptions and purchase intention.Na indústria de bebidas, o Brasil acompanha a tendência mundial de consumo de alimentos saudáveis que oferecem saúde, conveniência, inovação e prazer. Portanto, o objetivo deste trabalho foi estudar a estabilidade de uma bebida de goiaba e água de coco verde, sem adição de sacarose e conservantes, envasada pelos processos térmico e asséptico, verificando sua vida de prateleira por meio de análises físico-químicas, microbiológicas e sensoriais durante 17 dias. A formulação da bebida mista foi de 35% de polpa de goiaba e 65% de água de coco, sendo duas amostras pasteurizadas a 90 °C/1 minuto e envasadas em embalagens de vidro (T90v) e de polietileno tereftalato (PET) (T90p); a terceira amostra pasteurizada a 98 °C/10 minutos foi envasada em vidro (T98v); e a quarta amostra sem tratamento térmico foi envasada em PET (Tnat). Para o estudo da vida de prateleira das quatro bebidas mistas de goiaba e água de coco foram feitas análises de pH, sólidos solúveis, acidez titulável, açúcares e vitamina C, análises microbiológicas e sensoriais. Nas análises físico-químicas as oscilações foram pequenas nos dois dias (5º e 17º) analisados. A amostra Tnat apresentou contagem de coliformes totais no 17º dia de armazenamento, e as amostras T90v, T90p e T98v não obtiveram contagem dos micro-organismos analisados durante os 17 dias. Foi realizada a análise sensorial apenas das amostras T90v e T90p, no 5º e no 17º dias, sendo que a bebida T90v apresentou melhor aceitação sensorial quanto ao atributo aroma e à avaliação global, percepções de gostos e na intenção de compra