Intra-regional classification of grape seeds produced in Mendoza province (Argentina) by multi-elemental analysis and chemometrics tools

The feasibility of the application of chemometric techniques associated with multi-element analysis for the classification of grape seeds according to their provenance vineyard soil was investigated. Grape seed samples from different localities of Mendoza province (Argentina) were evaluated. Inductively coupled plasma mass spectrometry (ICP-MS) was used for the determination of twenty-nine elements (Ag, As, Ce, Co, Cs, Cu, Eu, Fe, Ga, Gd, La, Lu, Mn, Mo, Nb, Nd, Ni, Pr, Rb, Sm, Te, Ti, Tl, Tm, U, V, Y, Zn and Zr). Once the analytical data were collected, supervised pattern recognition techniques such as linear discriminant analysis (LDA), partial least square discriminant analysis (PLS-DA), k-nearest neighbors (k-NN), support vector machine (SVM) and Random Forest (RF) were applied to construct classification/discrimination rules. The results indicated that nonlinear methods, RF and SVM, perform best with up to 98% and 93% accuracy rate, respectively, and therefore are excellent tools for classification of grapes.Fil: Canizo, Brenda Vanina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Química Analítica para Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Escudero, Leticia Belén. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Química Analítica para Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Pérez, María Belén. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales. Laboratorio de Química Analítica para Investigación y Desarrollo; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza; ArgentinaFil: Pellerano, Roberto Gerardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; ArgentinaFil: Wuilloud, Rodolfo German. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Instituto de Química Básica y Aplicada del Nordeste Argentino. Universidad Nacional del Nordeste. Facultad de Ciencias Exactas Naturales y Agrimensura. Instituto de Química Básica y Aplicada del Nordeste Argentino; Argentin

Educación sanitaria en pacientes con enfermedad celíaca. Revisión sistemática

RESUMEN Introducción: La enfermedad celíaca (EC) es el trastorno inflamatorio intestinal más frecuente. Tiene una prevalencia mundial del 1% y en España oscila entre 1/118 en la población infantil y 1/389 en la población adulta. Actualmente, el único tratamiento existente es una dieta sin gluten (DSG). Por eso, la adherencia al tratamiento y las pautas higiénico-dietéticas son lo más importante y condicionan la calidad de vida del paciente. Ante esta situación todas las intervenciones deben de ir dirigidas a fomentar su bienestar y adaptación a esta nueva situación vital. Esto se conseguirá mediante la educación sanitaria adecuada sobre la DSG, llevada a cabo por los profesionales de la salud. Objetivos: Identificar las evidencias existentes acerca de la efectividad de las intervenciones de educación sanitaria llevadas a cabo por personal sanitario dirigidas a pacientes diagnosticados de enfermedad celíaca. Metodología: Se llevó a cabo una revisión sistemática de la literatura en las siguientes bases de datos: Cochrane Library, PubMed, JBI Connect, HTA, Trip Database, Guiasalud, CINAHL, PsycINFO, BVS, ISI Web of Science, Scopus, CSIC y Dialnet. Los resultados han sido valorados en base a los criterios de inclusión y exclusión y a las variables de estudio que hemos establecido. Resultados: Tras la búsqueda, seleccionamos 4 ensayos clínicos aleatorizados que tenían como objetivo principal conocer la efectividad de la educación sanitaria en pacientes celíacos. En estos estudios, se demostró que es efectiva en los síntomas gastrointestinales, el bienestar psicológico, el nivel de conocimientos sobre la EC, la adherencia a la DSG y la calidad de vida. Las intervenciones han sido clasificadas según niveles de evidencia y grados de recomendación.Traballo fin de grao (UDC.FEP). Enfermaría. Curso 2013/201

Úlceras por humedad: diferenciación y prevención

[Resumen] El contacto mantenido de la piel con la humedad procedente de las heces/y o la orina genera modificaciones en la estructura y función, alterándose la barrera cutánea y ocasionando su rotura. Los pacientes con más riesgo de desarrollar una lesión asociada a la humedad son aquellos con: edad avanzada (la epidermis de una persona de 80 años de edad tiene un 50% menos de espesor que la de una persona joven), incontinencia fecal, fricción y cizallamiento durante la movilización, deterioro cognitivo y pobre calidad de vida. La diferenciación entre úlcera por presión y úlcera por humedad es importante porque las medidas preventivas y de cuidados a aplicar son diferentes. La escala EVE (escala visual de eritema) y la PAT (Perineal Assessment Tool) son las dos principales escalas para valorar el riesgo de este tipo de lesiones. En la práctica habitual se han venido utilizando de manera tradicional una serie de productos comercializados como pañales, compresas, ácidos grasos hiperoxigenados, apósitos, limpiadores… Las lesiones asociadas a la humedad no son una consecuencia inevitable de la incontinencia sino que pueden ser prevenibles y ello mejorará, entre otras cosas, la calidad de vida del paciente.[Abstract] Sustained contact of skin with moisture from the stool or urine produces changes in the structure and function, altering the skin barrier and causing breakage. Patients with a higher risk to develop an injury associated with humidity and moisture weathers are those with a more advanced age (the epidermis of an 80 years old person is 50% thinner than the one of a young person), fecal incontinence, friction and shear during motion and mobilization, cognitive impairment and a poor quality of life. The differentiation between pressure ulcers and skin lesions associated with the incontinence is important because preventive measures and care to be applied are different. EVE Scale (Scale Visual Erythema) and PAT (Perineal Assessment Tool) are the two major scales for assessing the risk of such injuries. In daily practice there has traditionally been used a number of marketed products such as diapers, pads, hiper-oxygenated fatty acids, dressings, cleaners… The moisture-related injuries are an inevitable consequence of incontinence but may be preventable and it will improve, among other things, the patient´s quality of life.Traballo fin de mestrado (UDC.FCS). Mestrado Universitario en Xerontoloxía. Curso 2013/2014

A study of female madness during the Victorian Era: Alice's Adventures in Wonderland

In the context of the Victorian Era, madness acquired a complex and often negative perception. Female madness was highly significant as women were in many cases considered to be mad by nature. Such is the case that Victorian literature gave birth to a number of “mad women” who illustrated the application of madness to the female genre. The object of our study consists of an analysis of madness and female madness during the Victorian era in relation to Alice’s Adventures in Wonderland by Lewis Carroll, as madness constitutes one of its most important motives. Having a larger insight on the topic will provide us with a better comprehension of both the Victorian society and Carroll’s Wonderland, clarifying how relevant madness was and how it applied to them both. In order to achieve this, we will describe madness’ perception during Victorian times and we will also study some of Wonderland’s inhabitants focusing on Alice, seeking to illustrate this perception

A 13-bit, 2.2-MS/s, 55-mW multibit cascade ΣΔ modulator in CMOS 0.7-μm single-poly technology

This paper presents a CMOS 0.7-μm ΣΔ modulator IC that achieves 13-bit dynamic range at 2.2 MS/s with an oversampling ratio of 16. It uses fully differential switched-capacitor circuits with a clock frequency of 35.2 MHz, and has a power consumption of 55 mW. Such a low oversampling ratio has been achieved through the combined usage of fourth-order filtering and multibit quantization. To guarantee stable operation for any input signal and/or initial condition, the fourth-order shaping function has been realized using a cascade architecture with three stages; the first stage is a second-order modulator, while the others are first-order modulators - referred to as a 2-1-1mb architecture. The quantizer of the last stage is 3 bits, while the other quantizers are single bit. The modulator architecture and coefficients have been optimized for reduced sensitivity to the errors in the 3-bit quantization process. Specifically, the 3-bit digital-to-analog converter tolerates 2.8% FS nonlinearity without significant degradation of the modulator performance. This makes the use of digital calibration unnecessary, which is a key point for reduced power consumption. We show that, for a given oversampling ratio and in the presence of 0.5% mismatch, the proposed modulator obtains a larger signal-to-noise-plus-distortion ratio than previous multibit cascade architectures. On the other hand, as compared to a 2-1-1single-bit modulator previously designed for a mixed-signal asymmetrical digital subscriber line modem in the same technology, the modulator in this paper obtains one more bit resolution, enhances the operating frequency by a factor of two, and reduces the power consumption by a factor of four.Comisión Interministerial de Ciencia y Tecnología TIC97-0580European Commission ESPRIT 879

The Contribution of Global Alliances to Airlines’ Environmental Performance

Global alliances have traditionally been related to improvements in the economic and operational performances of companies, particularly in the airline industry. However, we still do not know the effect of the participation in this kind of multilateral agreement on the environmental performance of airlines. The main aim of this work is to analyze whether the alliance membership of airlines has an effect upon their environmental performance, and if so, whether or not the characteristics of the global alliance, as well as the business model of the airline, may influence this relation to a greater or lesser extent. The results of regression and Analysis of Variance (ANOVA) in a sample of 252 airlines (58 included in one of the three global alliances: Star Alliance, Oneworld, and SkyTeam) show a strong and inverse relationship between environmental performance and belonging to an alliance. The paper also shows empirical evidence of the influence of the business model of the airline on environmental performance. These results suggest important implications for managers facing challenges regarding sustainability

Diverse responses of coastal communities to offshore wind farming development in Southern Spain

Despite having one of the fastest rates of wind power growth in Europe, offshore wind power development in Spain has been relatively slow. One of the factors affecting its deployment is strong local opposition. In this paper, we explore the main factors affecting local perceptions of offshore wind farms in the coastal regions of Southern Spain. We also compare local opinions of on-land and offshore farms, their impacts on local landscapes/seascapes, and their compatibility with local practices and values. To this end, a multi-phase research approach was applied, based on several stages of data collection and analysis and on surveys conducted between 2012 and 2022. Our study shows that the conflicts surrounding offshore wind farms are linked to the perception of the sea and the wind as important local resources and the perceived right of the coastal region to use these resources to generate wealth for their communities. The coastal communities’ values, perceptions, and practices regarding the sea have a fundamental influence on their opinions. Our research indicates that local people are more likely to accept offshore wind farms if they provide socioeconomic benefits for their communities and if joint use of marine resources can be guaranteed.Ministry of the Economy, Industry and Competitiveness and State Research Agency of Spain, and European Regional Development Fund CSO2017-86975-R CSO2017-86975-

Behavioral modeling of PWL analog circuits using symbolic analysis

Behavioral models are used both for top-down design and for bottom-up verification. During top-down design, models are created that reflect the nominal behavior of the different analog functions, as well as the constraints imposed by the parasitics. In this scenario, the availability of symbolic modeling expressions enable designers to get insight on the circuits, and reduces the computational cost of design space exploration. During bottom-up verification, models are created that capture the topological and constitutive equations of the underlying devices into behavioral descriptions. In this scenario symbolic analysis is useful because it enables to automatically obtain these descriptions in the form of equations. This paper includes an example to illustrate the use of symbolic analysis for top-down design.Comisión Interministerial de Ciencia y Tecnología TIC97-058

Design of RC-active oscillators using composite amplifiers

The design of composite opamp Wien-Bridge oscillators is systematically approached by using a general model including amplitude control issues. Two different design criteria are presented and their main features summarized. A general composite opamp topology from which a catalog of structures can be obtained in a systematic way is presented. Experimental data are included illustrating the performance of the proposed design criteria