Going back to the basics : identifying and implementing liquid’s value proposition

Liquid entered the Portuguese market in April 2011 with an innovate concept that, at that time, was only present outside national borders- with functional juices and smoothies, Liquid came up with a new and healthy alternative to the options found in the market. Its objective is to offer the health-concerned individuals the opportunity to opt healthy for their meals, where they can find the nutrients and vitamins one is expected to consume throughout the day. In one’s busy and stressed life, Liquid offers an easy and healthy alternative. The idea came from Teresa Barata, founder and CEO of Liquid, who based the brand’s foundation on her passion about healthy eating and nutrition in general. Still, Teresa lacked the knowledge and experience on launching and running a business. Of course, this had some repercussions- this dissertation strives to find what these were. Liquid has been losing focus and direction, much due to the lack of planning in the beginning. The many projects the company has been having led Teresa to rethink the brand’s essence. So, there is the need to understand what Liquid has to offer to the consumers and how it can add value to them. The results from the analysis of this dissertation suggest that Liquid has failed in positioning the brand in the mind of the consumers, which ultimately has led to the misallocation of the brand’s actual competition- this will help Liquid to find value proposition and implement it in the right frame of reference.A Liquid entrou no mercado em abril de 2011 com um conceito inovador que, naquela altura, só estava presente fora das fronteiras nacionais- com sumos e smoothies funcionais, a Liquid surgiu com uma saudável e nova alternativa para as opções encontradas no mercado. O objetivo é oferecer às pessoas que se preocupam com a saúde a oportunidade de poderem optar saudável nas suas refeições, onde podem encontrar todos os nutrientes e vitaminas que devem consumir ao longo de um dia. Na ocupada vida que se vive atualmente, a Liquid oferece uma alternativa fácil e saudável. A ideia surgiu de Teresa Barata, fundadora e CEO da Liquid, que se baseou na sua paixão pela alimentação saudável e nutrição. Ainda assim, faltou a Teresa o conhecimento e experiência no que toca a gerir um negócio. Claro, isto teve algumas repercussões. A Liquid tem vindo a perder foco e direção, muito devido à falta de planeamento no inicio. Os muitos projetos que a empresa tem vindo a ter levaram Teresa a repensar a essência da marca. Assim, existe a necessidade de perceber o que é que a Liquid tem para oferecer aos seus consumidores e como é que pode acrescentar valor para os mesmos. Os resultados da análise desta tese sugerem que a Liquid falhou no posicionamento da marca, o que levou à falha na interpretação dos concorrentes da mesma. Ao resolver este problema, a Liquid é capaz de descobrir a sua proposta de valor e implementá-la no quadro de referência correto

Influence of lattice symmetry on ultrasound transmission through plates with subwavelength aperture arrays

3 pages, 2 figures, 1 table.We study the transmission of sound waves through aluminum plates perforated with square and triangular hole arrays. We demonstrate both theoretically and experimentally that lattice symmetry affects the position of the Wood anomalies and the width of the transmission peaks. The angle and frequency dependence of sound transmission through perforated plates are thoroughly discussed. Finally, we observe unexpected anisotropic behavior in the long-wavelength Lamb-mode bands of perforated plates.This work has been supported by the Spanish MICINN (Grant Nos. MAT2006-03097 and MAT2007-66050 and NanoLight.es)and the EU (Grant No. NMP4-SL-2008-213669-ENSEMBLE). H.E. acknowledges a CSIC-JAE scholarship.Peer reviewe

Angle-dependent ultrasonic transmission through plates with subwavelength hole arrays

Pdf con material suplementario.We study the angle and frequency dependence of sound transmission through water-immersed perforated aluminum plates. Three types of resonances are found to govern the acoustic properties of the plates: lattice resonances in periodic arrays, Fabry-Perot modes of the hole cavities, and elastic Lamb modes. The last two of them are still present in random arrays and have no parallel in optical transmission through holes. These modes are identified by comparing experiment with various levels of theoretical analysis, including full solution of the elasto-acoustic wave equations. We observe strong mixture of different transmission mechanisms, giving rise to unique acoustic behavior and opening new perspectives for exotic wave phenomena. © 2009 The American Physical SocietyThis work has been supported by the Spanish MCeI (MAT2006-03097, MAT2007-66050, and NanoLight.es) and the EU (NMP4-SL-2008-213669-ENSEMBLE).Peer Reviewe

Influence of the hole filling fraction on the ultrasonic transmission through plates with subwavelength aperture arrays

We report on the large impact of the hole filling fraction on the ultrasonic transmission spectra of periodic subwavelength hole arrays. We demonstrate both theoretically and experimentally that transmission peaks become narrower as the filling fraction decreases. Our results are consistent in plates with different thickness values and provide a route map for the design of plates with tailored acoustic transmission profiles. © 2008 American Institute of Physics.Peer Reviewe

Thermal effects on the diesel injector performance through adiabatic 1D modelling. Part II: Model validation, results of the simulations and discussion

[EN] In this paper, a one-dimensional computational model of the flow in a common-rail injector is used to compute local variations of fuel temperature (including the temperature change produced upon expansion across the nozzle) and analyse their effect on injector dynamics. These variations are accounted through the adiabatic flow hypothesis, assessed in a first part of the paper where the model features are also described. They imply variations in the fuel properties and the flow regime established across the injector internal restrictions driving the solenoid valve. An extensive validation of the model against experimental results is presented for a wide range of conditions. Multiple injection strategies are also explored, analysing the influence of the inlet fuel temperature and its variations on the mass injected by successive injections and the critical dwell time below which they cannot be separated. Results show significant changes in fuel temperature across some injector restrictions. These changes are greater the higher the rail pressure and lower the fuel temperature at the injector inlet. In the case of the flow across nozzle orifices, the fuel can be either heated or subcooled depending on the operating conditions, the heating being especially relevant for cold-start-like fuel temperatures at the inlet. Thermal effects also influence the injection rate and duration. This influence on injector dynamics is particularly accused in the injector of study due to its ballistic nature. In this regard, the time needed to effectively separate two successive injections is greater the higher the fuel temperature and the injection pressure.This work was partly sponsored by FEDER and the Spanish "Ministerio de Economia y Competitividad" in the frame of the project "Desarrollo de modelos de combustion y emisiones HPC para el analisis de plantas propulsivas de transporte sostenible (CHEST)", reference TRA2017-89139-C2-1-R-AR. On the other hand, the support given to Mr Mario Belmar by "Universitat Politecnica de Valencia" through the "FPI-Subprograma 2" grant within the "Programa de Apoyo para la Investigacion y Desarrollo (PAID-01-18)" is gratefully acknowledged by the authors.Payri, R.; Salvador, FJ.; Carreres, M.; Belmar-Gil, M. (2020). Thermal effects on the diesel injector performance through adiabatic 1D modelling. Part II: Model validation, results of the simulations and discussion. Fuel. 260:1-17. https://doi.org/10.1016/j.fuel.2019.115663S117260Gumus, M., Sayin, C., & Canakci, M. (2012). The impact of fuel injection pressure on the exhaust emissions of a direct injection diesel engine fueled with biodiesel–diesel fuel blends. Fuel, 95, 486-494. doi:10.1016/j.fuel.2011.11.020Agarwal, A. K., Dhar, A., Gupta, J. G., Kim, W. I., Choi, K., Lee, C. S., & Park, S. (2015). Effect of fuel injection pressure and injection timing of Karanja biodiesel blends on fuel spray, engine performance, emissions and combustion characteristics. Energy Conversion and Management, 91, 302-314. doi:10.1016/j.enconman.2014.12.004Zecca, A., & Chiari, L. (2010). Fossil-fuel constraints on global warming. Energy Policy, 38(1), 1-3. doi:10.1016/j.enpol.2009.06.068Wang, J., Feng, L., Tang, X., Bentley, Y., & Höök, M. (2017). The implications of fossil fuel supply constraints on climate change projections: A supply-side analysis. Futures, 86, 58-72. doi:10.1016/j.futures.2016.04.007Wang, X., Huang, Z., Zhang, W., Kuti, O. A., & Nishida, K. (2011). Effects of ultra-high injection pressure and micro-hole nozzle on flame structure and soot formation of impinging diesel spray. Applied Energy, 88(5), 1620-1628. doi:10.1016/j.apenergy.2010.11.035Boccardo, G., Millo, F., Piano, A., Arnone, L., Manelli, S., Fagg, S., … Weber, J. (2019). Experimental investigation on a 3000 bar fuel injection system for a SCR-free non-road diesel engine. Fuel, 243, 342-351. doi:10.1016/j.fuel.2019.01.122Mancaruso, E., Sequino, L., & Vaglieco, B. M. (2016). Analysis of the pilot injection running Common Rail strategies in a research diesel engine by means of infrared diagnostics and 1d model. Fuel, 178, 188-201. doi:10.1016/j.fuel.2016.03.066Breda, S., D’Orrico, F., Berni, F., d’ Adamo, A., Fontanesi, S., Irimescu, A., & Merola, S. S. (2019). Experimental and numerical study on the adoption of split injection strategies to improve air-butanol mixture formation in a DISI optical engine. Fuel, 243, 104-124. doi:10.1016/j.fuel.2019.01.111Wang, B., Pamminger, M., Vojtech, R., & Wallner, T. (2018). Impact of injection strategies on combustion characteristics, efficiency and emissions of gasoline compression ignition operation in a heavy-duty multi-cylinder engine. International Journal of Engine Research, 21(8), 1426-1440. doi:10.1177/1468087418801660Sun, Z.-Y., Li, G.-X., Chen, C., Yu, Y.-S., & Gao, G.-X. (2015). Numerical investigation on effects of nozzle’s geometric parameters on the flow and the cavitation characteristics within injector’s nozzle for a high-pressure common-rail DI diesel engine. Energy Conversion and Management, 89, 843-861. doi:10.1016/j.enconman.2014.10.047Torelli, R., Som, S., Pei, Y., Zhang, Y., & Traver, M. (2017). Influence of fuel properties on internal nozzle flow development in a multi-hole diesel injector. Fuel, 204, 171-184. doi:10.1016/j.fuel.2017.04.123Salvador, F., De la Morena, J., Crialesi-Esposito, M., & Martínez-López, J. (2017). Comparative study of the internal flow in diesel injection nozzles at cavitating conditions at different needle lifts with steady and transient simulations approaches. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 232(8), 1060-1078. doi:10.1177/0954407017725672Ihme, M., Ma, P. C., & Bravo, L. (2018). Large eddy simulations of diesel-fuel injection and auto-ignition at transcritical conditions. International Journal of Engine Research, 20(1), 58-68. doi:10.1177/1468087418819546Desantes, J. M., Salvador, F. J., Carreres, M., & Martínez-López, J. (2014). Large-eddy simulation analysis of the influence of the needle lift on the cavitation in diesel injector nozzles. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 229(4), 407-423. doi:10.1177/0954407014542627Payri, R., Salvador, F. J., Carreres, M., & De la Morena, J. (2016). Fuel temperature influence on the performance of a last generation common-rail diesel ballistic injector. Part II: 1D model development, validation and analysis. Energy Conversion and Management, 114, 376-391. doi:10.1016/j.enconman.2016.02.043Salvador, F. J., Carreres, M., Crialesi-Esposito, M., & Plazas, A. H. (2017). Determination of critical operating and geometrical parameters in diesel injectors through one dimensional modelling, design of experiments and an analysis of variance. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 232(13), 1762-1781. doi:10.1177/0954407017735262Desantes, J., Salvador, F., Carreres, M., & Jaramillo, D. (2015). Experimental Characterization of the Thermodynamic Properties of Diesel Fuels Over a Wide Range of Pressures and Temperatures. SAE International Journal of Fuels and Lubricants, 8(1), 190-199. doi:10.4271/2015-01-0951Dernotte, J., Hespel, C., Houille, S., Foucher, F., & Mounaim-Rousselle, C. (2012). INFLUENCE OF FUEL PROPERTIES ON THE DIESEL INJECTION PROCESS IN NONVAPORIZING CONDITIONS. Atomization and Sprays, 22(6), 461-492. doi:10.1615/atomizspr.2012004401Park, Y., Hwang, J., Bae, C., Kim, K., Lee, J., & Pyo, S. (2015). Effects of diesel fuel temperature on fuel flow and spray characteristics. Fuel, 162, 1-7. doi:10.1016/j.fuel.2015.09.008Wang, Z., Ding, H., Wyszynski, M. L., Tian, J., & Xu, H. (2015). Experimental study on diesel fuel injection characteristics under cold start conditions with single and split injection strategies. Fuel Processing Technology, 131, 213-222. doi:10.1016/j.fuproc.2014.10.003Salvador, F. J., Gimeno, J., Carreres, M., & Crialesi-Esposito, M. (2017). Experimental assessment of the fuel heating and the validity of the assumption of adiabatic flow through the internal orifices of a diesel injector. Fuel, 188, 442-451. doi:10.1016/j.fuel.2016.10.061Nurick, W. H. (1976). Orifice Cavitation and Its Effect on Spray Mixing. Journal of Fluids Engineering, 98(4), 681-687. doi:10.1115/1.3448452Soteriou C, Andrews R, Smith M. Direct injection diesel sprays and the effect of cavitation and hydraulic flip on atomization. SAE Pap 950080 1995. doi: 10.4271/950080.Lichtarowicz, A., Duggins, R. K., & Markland, E. (1965). Discharge Coefficients for Incompressible Non-Cavitating Flow through Long Orifices. Journal of Mechanical Engineering Science, 7(2), 210-219. doi:10.1243/jmes_jour_1965_007_029_02Franc J-P. The Rayleigh-Plesset equation: a simple and powerful tool to understand various aspects of cavitation. Fluid Dyn. Cavitation Cavitating Turbopumps, vol. 496, Vienna: Springer; 2007, p. 1–41. doi: 10.1007/978-3-211-76669-9_1.PAYRI, R., GARCIA, J., SALVADOR, F., & GIMENO, J. (2005). Using spray momentum flux measurements to understand the influence of diesel nozzle geometry on spray characteristics. Fuel, 84(5), 551-561. doi:10.1016/j.fuel.2004.10.009Salvador, F. J., Gimeno, J., Carreres, M., & Crialesi-Esposito, M. (2016). Fuel temperature influence on the performance of a last generation common-rail diesel ballistic injector. Part I: Experimental mass flow rate measurements and discussion. Energy Conversion and Management, 114, 364-375. doi:10.1016/j.enconman.2016.02.042Payri, R., Salvador, F. J., Gimeno, J., & Bracho, G. (2008). A NEW METHODOLOGY FOR CORRECTING THE SIGNAL CUMULATIVE PHENOMENON ON INJECTION RATE MEASUREMENTS. Experimental Techniques, 32(1), 46-49. doi:10.1111/j.1747-1567.2007.00188.xTheodorakakos, A., Strotos, G., Mitroglou, N., Atkin, C., & Gavaises, M. (2014). Friction-induced heating in nozzle hole micro-channels under extreme fuel pressurisation. Fuel, 123, 143-150. doi:10.1016/j.fuel.2014.01.050Strotos, G., Koukouvinis, P., Theodorakakos, A., Gavaises, M., & Bergeles, G. (2015). Transient heating effects in high pressure Diesel injector nozzles. International Journal of Heat and Fluid Flow, 51, 257-267. doi:10.1016/j.ijheatfluidflow.2014.10.010Salvador, F. J., Carreres, M., De la Morena, J., & Martínez-Miracle, E. (2018). Computational assessment of temperature variations through calibrated orifices subjected to high pressure drops: Application to diesel injection nozzles. Energy Conversion and Management, 171, 438-451. doi:10.1016/j.enconman.2018.05.102Payri, R., Salvador, F. J., Gimeno, J., & Bracho, G. (2008). Effect of fuel properties on diesel spray development in extreme cold conditions. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 222(9), 1743-1753. doi:10.1243/09544070jauto844Salvador, F. J., Gimeno, J., De la Morena, J., & Carreres, M. (2012). Using one-dimensional modeling to analyze the influence of the use of biodiesels on the dynamic behavior of solenoid-operated injectors in common rail systems: Results of the simulations and discussion. Energy Conversion and Management, 54(1), 122-132. doi:10.1016/j.enconman.2011.10.007Moon, S., Gao, Y., Park, S., Wang, J., Kurimoto, N., & Nishijima, Y. (2015). Effect of the number and position of nozzle holes on in- and near-nozzle dynamic characteristics of diesel injection. Fuel, 150, 112-122. doi:10.1016/j.fuel.2015.01.09

Caracterización del régimen natural de caudales del río Moratalla (Murcia, España) y sus implicaciones en la gestión del agua

El río Moratalla, localizado en el noroeste de la Región de Murcia (España), cuenta con unos valores naturales que le han conferido un peso importante en la Red Natura 2000. Sin embargo, la demanda de agua para regadío y la reciente construcción de dos presas a lo largo de su cauce supone un riesgo para la continuidad de dichos valores, lo que hace necesario una caracterización del régimen natural que permita el diseño de un régimen ambiental de caudales (RAC) que compatibilice la conservación del sistema con las demandas de agua. Mientras el régimen natural se caracteriza por una alta variabilidad inter e intranual, característica de los ríos mediterráneos, el régimen actual presenta una reducción significativa de la magnitud de los caudales y de su variación estacional, siendo las sequías más frecuentes y de mayor duración. El régimen ambiental, obtenido bajo un criterio altamente conservacionista, permite abastecer las demandas actuales de agua para regadío sólo en años húmedos. Siguiendo un criterio menos conservacionista también lo permitiría en años medios, pero no en años secos, más frecuentes en las últimas décadas

Confiabilidad y validez de la Escala de Déficit Atencional (EDAH) adaptada en estudiantes chilenos

Antecedentes. Las necesidades de atención en salud mental infantil hacen necesario contar con estudios epidemiológicos que sirvan de base para perfeccionar las intervenciones y acrecentar el diagnóstico, con instrumentos fiables y adecuados al contexto. Objetivo. El objetivo de este estudio fue analizar las propiedades psicométricas de la Escala para la Evaluación del Trastorno por Déficit Atencional (EDAH), en escolares de primaria y secundaria de Chile. Método. Se evaluó una muestra de 508 alumnos (144 con Déficit Atencional, 110 con sospecha de padecerlo y 254 comunes) mediante un test completado por sus profesores. Resultados. La estructura factorial de la EDAH reveló tres factores que en conjunto explican el 71,61% de la varianza total de la escala, con un coeficiente Alfa de 0,948. Esto permite concluir que la adaptación de la escala presenta características psicométricas aceptables, una adecuada consistencia interna y que sus elementos poseen un adecuado poder discriminatorio. Discusión y conclusión. Se efectuó el estudio transversal de salud mental en escolares chilenos, el cual reveló que la escala EDAH adaptada posee alta capacidad de discriminación, adecuada fiabilidad de elementos y factores, además de presentar un óptimo poder discriminante entre factores. Se analizan las implicaciones y el posible aporte en la detección precoz del diagnóstico clínico en salud mental.Background. The needs of children’s mental health care make it necessary to have epidemiological studies that serve as a basis to refine the interventions and enhance the diagnosis with reliable and appropriate tools. Objective. The objective of this study was to analyze the psychometric properties of the scale for the assessment of the Attentional Deficit Disorder (ADHD) in primary and secondary schools in Chile. Method. A sample of 508 students (144 with Attentional deficits, 110 with suspected autism and 254 common) was assessed through a test completed by their teachers. Results. The factorial structure of the ADHD revealed that three factors explain together the 71.61 % of the total variance of the scale, with a coefficient alpha of 0,948. This allows us to conclude that the scale presents acceptable psychometric characteristics and adequate internal consistency, and that its elements have a suitable discriminatory power. Discussion and conclusion. The present study of mental health in Chilean schoolchildren revealed that the ADHD adapted scale possesses a high discriminant capacity and adequate elements and factors reliability, as well as an optimal discriminant power among factors. We analyze the implications and possible contribution to the early detection of clinical diagnosis in mental health

On the Role of the Geometrical Parameters in the Ultrasonic Transmission Through Plates with Subwavelength Holes Arrays

[EN] This paper presents an overview of the recents studies on the ultrasonic transmission through subwavelength holes arrays. The role of the geometrical parameters of the perforated plates in the transmission features has been reported by using a theoretical model under the rigid-solid assumption. It is shown that the transmission spectrum can be tailored by varying the geometrical parameters.This work has been supported by the Spanish MICINN (MAT2010-16879).Uris Martínez, A.; Gómez Lozano, V.; Candelas Valiente, P.; Belmar Ibáñez, F. (2014). On the Role of the Geometrical Parameters in the Ultrasonic Transmission Through Plates with Subwavelength Holes Arrays. Acta Acustica united with Acustica. 100(4):595-603. https://doi.org/10.3813/AAA.918739S595603100

Natural flow regime, degree of alteration and environmental ows in the Mula stream (Segura River basin, SE Spain)

Natural ftow regime, degree of alteration and environmental ftows in the Mula stream (Segura River basin, SE Spain) The Mula stream, a tributary located in the southern part of the Segura River basin, possesses habitats and species of Euro­pean interest for which it has been declared Special Area of Conservation (SAC) within the Natura 2000 network. However, strong agricultural pressures on the superficial and groundwater resources of the Mula stream are threatening its ecological state. A characterisation of the natural flow regime of the stream and its main tributaries was carried out to design environ­mental flow regimes (EFRs) and make the conservation of the ecosystem compatible with agricultural requirements. Natural hydrographs, based on daily data corresponding to pre-dam periods, showed a high inter- and intra-annual variability typical of Mediterranean streams, with high flows in autumn and spring and low flows in summer. After the construction of the La Cierva reservoir in the Mula stream, the flow regime has been progressively altered in parallel with the expansion of irrigated agriculture in the watershed. The current regime shows a significant reduction in the magnitude of flows and a reversal of the seasonal pattero, with droughts during winter instead of summer months becoming more frequent and long-Iasting. Different EFRs are presented for three conservation scenarios of natural flow regimes in wet, average and dry years. Once the environmental flows were subtracted from the natural ones, the available water resources for agriculture were clearly insufficient in al! studied scenarios, which poses problems for the implementation of such environmental flows in this basin.El Río Mula, un afluente localizado en la parte meridional de la cuenca del Río Segura, posee una elevada riqueza de hábitats de interés comunitario por los que ha sido declarado UC dentro de la Red Natura 2000. Sin embargo, la fuerte presión agrícola sobre sus recursos superficiales y subterráneos amenaza su estado ecológico. En este estudio se ha llevado a cabo una caracterización del régimen natural de caudales del río y sus principales afluentes con el fin de diseñar Regímenes Ambientales de Caudales (RACs) y hacer la conservación del ecosistemafluvial compatible con las demandas agrícolas. Los hidrogramas naturales, obtenidos a partir de registros diarios de aforos correspondientes a periodos previos a la construcción de embalses, mostraron una alta variabilidad inter e intranual típica de los ríos mediterráneos, con altos caudales en otoño y primavera y bajos en verano. Tras la construcción del embalse de La Cierva en el Río Mula el régimen de caudales ha sido alterado progresivamente en paralelo a la expansión de la agricultura de regadío en la cuenca. El régimen actual muestra una reducción significativa en la magnitud de los caudales y una inversión del patrón estacional, es decir, sequías en invierno en lugar de en verano y cada vez más frecuentes y duraderas. Se presentan los diferentes RACs estimados para tres escenarios de conservación de los regímenes naturales de caudal, tanto para años húmedos como para medios y secos. En todos los escenarios estudiados, los recursos hídricos disponibles para la agricultura, previa detracción de los caudales ambientales, son claramente insuficientes, lo que dificulta la implementación de dichos caudales ambientales en esta cuenca

Analysis of Predistortion Techniques on Fresnel Zone Plates in Ultrasound Applications

[EN] In this work, we analyze the effect of predistortion techniques on the focusing profile of Fresnel Zone Plates (FZPs) in ultrasound applications. This novel predistortion method is based on either increasing or decreasing the width of some of the FZP Fresnel rings by a certain amount. We investigate how the magnitude of the predistortion, as well as the number and location of the predistorted rings, influences the lens focusing profile. This focusing profile can be affected in different ways depending on the area of the lens where the predistortion is applied. It is shown that when the inner area of the lens, closer to its center, is predistorted, this technique allows the control of the focal depth at the main focus. However, when the predistortion is applied to an area farther from the center of the lens, the acoustic intensity distribution among the main focus and the closest adjacent secondary foci can be tailored at a certain degree. This predistortion technique shows great potential and can be used to control, modify and shape the FZP focusing profile in both industrial and therapeutic applications.This work has been supported by Spanish MICINN RTI2018-100792-B-I00 project and Generalitat Valenciana AICO/2020/139 project.Fuster Escuder, JM.; Pérez-López, S.; Belmar Ibáñez, F.; Candelas Valiente, P. (2021). Analysis of Predistortion Techniques on Fresnel Zone Plates in Ultrasound Applications. Sensors. 21(15):1-12. https://doi.org/10.3390/s21155066S112211