Clustering algorithms for wireless sensor networks and security threats

Aleixandre Tudó, C. (2010). Clustering algorithms for wireless sensor networks and security threats. http://hdl.handle.net/10251/10168.Archivo delegad

Effect of leaf removal and Shoot Topping on the aromatic composition of White wines

[EN] The aim of this study was to evaluate the effect of canopy treatments on the aromatic composition and sensory qualities of Muscatel wines produced in the Valencia Region (Spain). The evaluation was conducted during 2008 and 2009 in an experimental field on vines in a vertical trellis system. The canopy treatments were made in the form of leaf removal and shoot topping using three different rootstocks (Couderc 3309, Paulsen 1103 and Ruggeri 140). The vine canopies of the control plants were given no treatment. Ripening was monitored by evaluating the content of soluble solids, total acidity and pH from veraison to harvest. 50 Kg grape samples were microvinificated, after which an evaluation was made of the aromatic composition and sensory attributes of the wines by gas chromatography. A sensory analysis was performed using a panel of wine expert tasters. The results of sugar accumulation in the grapes showed that leaf removal was the best canopy treatment in every plant rootstock. Lower yield was observed with both leaf removal and shoot topping. The highest concentration of aromatic compounds (acetates, alcohols, ethyl esters, fatty acids and monoterpenes) was found in wines made from the vines on Couderc 3309 rootstock who underwent to leaf removal and shoot topping. The wines from Couderc 3309 also obtained the highest scores in the sensory analysis. The wines from vines with leaf removal were the highest rated, while those from plants whose shoots had been topped were the lowest rated, regardless of the rootstock used.The authors would like to express their thanks for the financial support received for this project from the Agricultural Council of the Regional Government of The Valencian Community (Spain).Aleixandre-Tudó, JL.; Aleixandre Benavent, JL. (2019). Effect of leaf removal and Shoot Topping on the aromatic composition of White wines. International Journal of Scientific and Engineering Research. 6(11):66-77. http://hdl.handle.net/10251/158242S667761

Control domótico remoto de vivienda mediante smartphone

La tecnología forma parte de la sociedad actual y de la vida cotidiana de las personas. Los últimos avances tecnológicos han simplificado nuestra vida y han provocado muchos cambios en las diversas áreas de la sociedad. Una de estas áreas es sin duda la automatización de la vivienda. Los nuevos aparatos electrónicos nos permiten tener acceso a las comunicaciones en cualquier lugar y a cualquier hora. La entrada de internet móvil en el mercado mediante los Smartphone y su rápida y extensa propagación obligan a todos los sectores a introducirse en la materia. El siguiente proyecto introduce el mundo de la domotica en dicha tecnología emergente tratando de conseguir como resultado el confort, seguridad y ahorro en el hogar. Desde nuestro dispositivo móvil seremos capaces de controlar la iluminación, climatización y encendido de equipos así como recibir en cualquier lugar información del estado de nuestra vivienda mediante imágenes, alarmas y sensores.The technology is part of modern society and everyday life of the people. Recent technological advances simplified our lives and are the cause of many changes in the various areas of society. One of these areas is undoubtedly the home automation. New electronics allow us to have access to communications anywhere and anytime. The mobile Internet Smartphone and its rapid and extensive market spread require all sectors to enter the field. This project introduces the world of home automation in this emerging technology as a result trying to get comfort, safety and savings in the home. From your mobile device will be able to control lighting, climate control and power equipment as well as receive information anywhere in our home state as images, alarms and temperature.Aleixandre Tudó, B. (2013). Control domótico remoto de vivienda mediante smartphone. Universitat Politècnica de València. http://hdl.handle.net/10251/28786Archivo delegad

Current trends in scientific research on global warming: a bilbiometric analysis

[EN] The objective of this paper is to contribute to a better understanding of the scientific knowledge in global warming, as well as to investigate the evolution of the research knowledge through the published papers included in Web of Science database. A bibliometric and social network analyses was performed to obtain indicators of scientific productivity, impact and collaboration between researchers, institutions and countries. A subject analysis was also carried out taking into account the key words assigned to papers and subject areas of journals. A number of 1,672 articles were analysed since 2005 until 2014. The most productive journals were Journal of Climate (n = 95) and the most frequent keyword have been climate change (n = 722). The network of collaboration between countries shows the central position of the USA. Papers on the topic are published in a vast amount of journals from several subject categories. KeywordsAleixandre-Tudó, JL.; Bolaños-Pizarro, M.; Aleixandre, JL.; Aleixandre-Benavent, R. (2019). Current trends in scientific research on global warming: a bilbiometric analysis. International Journal of Global Warming. 17(2):142-169. https://doi.org/10.1504/IJGW.2019.097858 DOI: 10.1504/IJGW.2019.10019213S14216917

Worldwide Scientific Research on Nanotechnology: A Bibliometric Analysis of Tendencies, Funding, and Challenges

This document is the unedited Author¿s version of a Submitted Work that was subsequently accepted for publication in Journal of Agricultural and Food Chemistry, copyright © American Chemical Society after peer review. To access the final edited and published work see https://doi.org/10.1021/acs.jafc.0c02141.[EN] The main objective of this investigation was to analyze the scientific production in global research on nanotechnology, integrating scientific production, funding of studies, collaborations between countries, and the most cited publications. The source for obtaining the research papers for our analysis was the Science Citation Index Expanded from the Web of Science. A total of 3546 documents were extracted during the period of 1997-2018. Food science & technology, chemistry (applied and analytical), spectroscopy, and agriculture appeared as the main areas where the articles were published. Most prolific and cited journals were Analytical Methods, Journal of Agricultural and Food Chemistry, and Food Chemistry. The co-word analysis showed the relationships between "nanoparticles", which is the central word, and "silver nanoparticles", "delivery systems", and "zincnanoparticles". The most productive countries were China (1089 papers), the United States (523), Iran (427), and India (359). The main cited topics deal with the biomedical applications of nanoparticles, its synthesis from plants, and its applications in food science. The results highlight an important collaboration between institutions and countries. The availability of funding for research in nanotechnology was remarkable compared to other fields. The multidisciplinarity of the nanotechnology field is one of the main features as well as one of the central findings.Aleixandre-Tudó, JL.; Bolaños Pizarro, M.; Aleixandre Benavent, JL.; Aleixandre-Benavent, R. (2020). Worldwide Scientific Research on Nanotechnology: A Bibliometric Analysis of Tendencies, Funding, and Challenges. Journal of Agricultural and Food Chemistry. 68(34):9158-9170. https://doi.org/10.1021/acs.jafc.0c02141S915891706834Ranjan, S., Dasgupta, N., & Lichtfouse, E. (Eds.). (2016). Nanoscience in Food and Agriculture 1. Sustainable Agriculture Reviews. doi:10.1007/978-3-319-39303-2National Science and Technology Council (NSTC). National Nanotechnology Initiative Strategic Plan; NSTC: Washington, D.C., 2016; https://www.nano.gov/sites/default/files/pub_resource/2016-nni-strategic-plan.pdf (accessed June 11, 2020.Durán, N., & Marcato, P. D. (2012). Nanobiotechnology perspectives. Role of nanotechnology in the food industry: a review. International Journal of Food Science & Technology, 48(6), 1127-1134. doi:10.1111/ijfs.12027Chaudhry, Q., Castle, L., & Watkins, R. (Eds.). (2010). Nanotechnologies in Food. Nanoscience & Nanotechnology Series. doi:10.1039/9781847559883Duncan, T. V. (2011). Applications of nanotechnology in food packaging and food safety: Barrier materials, antimicrobials and sensors. Journal of Colloid and Interface Science, 363(1), 1-24. doi:10.1016/j.jcis.2011.07.017Chen, W.-T., Chan, A., Jovic, V., Sun-Waterhouse, D., Murai, K., Idriss, H., & Waterhouse, G. I. N. (2014). Effect of the TiO2 Crystallite Size, TiO2 Polymorph and Test Conditions on the Photo-Oxidation Rate of Aqueous Methylene Blue. Topics in Catalysis, 58(2-3), 85-102. doi:10.1007/s11244-014-0348-7WATERHOUSE, G. (2004). Influence of catalyst morphology on the performance of electrolytic silver catalysts for the partial oxidation of methanol to formaldehyde. Applied Catalysis A: General, 266(2), 257-273. doi:10.1016/j.apcata.2004.02.015Chen, W.-T., Chan, A., Sun-Waterhouse, D., Moriga, T., Idriss, H., & Waterhouse, G. I. N. (2015). Ni/TiO2: A promising low-cost photocatalytic system for solar H2 production from ethanol–water mixtures. 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Power source roadmaps using bibliometrics and database tomography. Energy, 30(5), 709-730. doi:10.1016/j.energy.2004.04.058Heersmink, R., van den Hoven, J., van Eck, N. J., & van den Berg, J. (2011). Bibliometric mapping of computer and information ethics. Ethics and Information Technology, 13(3), 241-249. doi:10.1007/s10676-011-9273-7Moed, H. F., De Bruin, R. E., & Van Leeuwen, T. N. (1995). New bibliometric tools for the assessment of national research performance: Database description, overview of indicators and first applications. Scientometrics, 33(3), 381-422. doi:10.1007/bf02017338Kostoff, R. N. (2002). Scientometrics, 53(1), 49-71. doi:10.1023/a:1014831920172Waltman, L. (2016). A review of the literature on citation impact indicators. Journal of Informetrics, 10(2), 365-391. doi:10.1016/j.joi.2016.02.007Aleixandre-Tudó, J. L., Castelló-Cogollos, L., Aleixandre, J. L., & Aleixandre-Benavent, R. (2019). Tendencies and Challenges in Worldwide Scientific Research on Probiotics. Probiotics and Antimicrobial Proteins, 12(3), 785-797. doi:10.1007/s12602-019-09591-0Rueda, G.; Gerdsri, P.; Kocaoglu, D. F. Bibliometrics and Social Network Analysis of the Nanotechnology Field. PICMET 2007 Proceedings; Portland, OR, Aug 5–9, 2007.Aleixandre-Tudó, J. L., Castelló-Cogollos, L., Aleixandre, J. L., & Aleixandre-Benavent, R. (2019). Renewable energies: Worldwide trends in research, funding and international collaboration. Renewable Energy, 139, 268-278. doi:10.1016/j.renene.2019.02.079Batagelj, V., & Mrvar, A. (2002). Pajek— Analysis and Visualization of Large Networks. Lecture Notes in Computer Science, 477-478. doi:10.1007/3-540-45848-4_54Chiu, W.-T., & Ho, Y.-S. (2007). Bibliometric analysis of tsunami research. Scientometrics, 73(1), 3-17. doi:10.1007/s11192-005-1523-1Aleixandre-Benavent, R., Aleixandre-Tudó, J. L., Castelló-Cogollos, L., & Aleixandre, J. L. (2018). Trends in global research in deforestation. A bibliometric analysis. 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(2015). Is there a clubbing effect underlying Chinese research citation Increases? Journal of the Association for Information Science and Technology, 66(9), 1923-1932. doi:10.1002/asi.23302Jiang, M., Qi, Y., Liu, H., & Chen, Y. (2018). The Role of Nanomaterials and Nanotechnologies in Wastewater Treatment: a Bibliometric Analysis. Nanoscale Research Letters, 13(1). doi:10.1186/s11671-018-2649-4Brahic, C. China Encroaches on US Nanotech Lead; SciDev.Net: Wallingford, U.K., 2005; https://www.scidev.net/global/publishing/news/china-encroaches-on-us-nanotech-lead.html (accessed March 10, 2020).Terekhov, A. I. (2017). Bibliometric spectroscopy of Russia’s nanotechnology: 2000–2014. Scientometrics, 110(3), 1217-1242. doi:10.1007/s11192-016-2234-5Lee, S., & Bozeman, B. (2005). The Impact of Research Collaboration on Scientific Productivity. Social Studies of Science, 35(5), 673-702. doi:10.1177/0306312705052359Wang, L., Jacob, J., & Li, Z. (2018). 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Trends in scientific research on climate change in agriculture and forestry subject areas (2005-2014)

[EN] The term "Climate change" involves an alteration of the mean and variability of the climate properties. It implies unusual variations in the planet earth atmosphere, which causes related effect on other parts of the planet. The reduction in the land crops annual yield is derived from those alterations. The objective of this paper was to contribute to a better understanding of the scientific knowledge of climate change and its effect concerning agriculture and investigate its evolution through published papers. The items under study were obtained from the Web of Science (WOS) platform from Thomson Reuters. A bibliometric and social network analysis was performed to determine the indicators of scientific productivity, impact and collaboration between authors, institutions and countries. A subject analysis taking into account the key words assigned to papers and subject areas of journals was also carried out. A total of 1471 articles were included in the selected subject categories in WOS from 2005 until 2014. More than 50% of the papers were published in the last three years. The papers were published in 302 different journals. The United States Department of Agriculture (USDA) is the most productive institution (n = 70), followed by the Chinese Academy of Sciences (n = 58) and the Institut National de la Recherche Agronomique (INRA, France) (n = 47). The Canadian Forest Service has the most citations (n = 1456). The most frequent keywords were CO2, adaptation, model, temperature and impact. The network of collaboration between institutions and countries involve both centres from developed and developing countries and the central position of the United States, together with other leading countries, such as China, Canada, Australia, Germany, and the United Kingdom. Twenty papers received more than 100 citations, most of them concerned with emerging risks that climate change causes on forests, the impact on the forest ecosystems, the effect on plant diseases and adaptation options.Aleixandre-Benavent, R.; Aleixandre-Tudó, JL.; Castelló-Cogollos, L.; Aleixandre Benavent, JL. (2017). Trends in scientific research on climate change in agriculture and forestry subject areas (2005-2014). Journal of Cleaner Production. 147:406-418. https://doi.org/10.1016/j.jclepro.2017.01.112S40641814

Efectos de los fenómenos producidos por el cambio climático sobre la calidad de los vinos

[ES] Effects of phenomena caused by climate change on the wines quality. Climate change is an alteration of the climate that manifests by changes in the environment that also modify their characteristics. On the production side, especially in viticulture, climate change is exerting an increasing influence on the phenology of the vine also affecting grape composition. It also influences the vinification, oenological, chemical, microbiology and the organoleptic behaviour. In this work, the effects that global warming, due to the emission of greenhouse gases, is inducing in viticulture and oenology areas was analysed. The effects of temperature, carbon dioxide and solar radiation on the grapes ripening which produce an advancement harvest time with consequent changes in the composition of the grape influences the type of wine produced. Moreover, the problems generated by increased sugar and pH, along with decreased acidity are of major importance. Certain aspects concerning oak wood and its use in wine aging wine, as well as chemical changes associated with this process were also analysed.Martinez, A.; Aleixandre Tudó, JL.; Aleixandre Benavent, JL. (2016). Efectos de los fenómenos producidos por el cambio climático sobre la calidad de los vinos. Enoviticultura. 42:4-26. http://hdl.handle.net/10251/92945S4264

Efecto genotipo sobre la evolución de los fenoles y azúcares en cinco clones de variedades de Vitis vinifera para diferentes estadios fenológicos

[ES] Este trabajo estudia la composición de algunos polifenoles y azúcares, en diferentes estadios fenológicos y en diferentes clones de Vitis vinifera, con objeto de caracterizar a los clones individualmente y también de compararlos entre sí. Las condiciones de cultivo son homogéneas para todos los clones: arena (condiciones sanitarias conocidas), ausencia de déficit hídrico (goteo y capa freática a 1 m) y selección clonal. Se utilizan cinco clones de variedades tintas: Syrah 174, Cabernet Sauvignon 341, Merlot 181, Cot 46 y Garnacha 136, de los cuales se estudian las diferentes variables en tres estadios fenológicos: estadio I (cierre de racimo), estadio II (20¿50% de envero, donde se distingue estadio II bayas verdes y II bayas rojas), y estadio III (madurez de vendimia). Los análisis de polifenoles se efectúan sobre el hollejo, determinándose los flavonoles, taninos catequínicos totales, proantocianidoles y antocianos utilizando técnicas de espectrofotometría. La determinación de los azúcares se efectúa sobre el mosto obtenido a partir de las bayas y también utilizando técnicas espectrofotométricas. Los resultados obtenidos y el tratamiento estadístico de los datos ponen de manifiesto que el fenotipo se debe al genotipo, ya que, todas los clones se han cultivado en las mismas condiciones y en la misma zona, con lo que las diferencias entre los parámetros estudiados en todos ellos, se deben únicamente a las características propias de cada clon.[EN] This paper studies the composition of some polyphenols and sugars in different phenological stages and in different clones of Vitis vinifera in order to characterize the individual clones and also compare them. The culture conditions are homogeneous for all clones: sand (known health conditions), lack of water deficit (drip and water table at 1 m) and clonal selection. Was used five clones varieties: Syrah 174, Cabernet Sauvignon 341, Merlot 181, Cot 46 and Grenache 136, which examines different variables in three phenological stages: stage IAleixandre-Tudó, JL.; Rosario Farré; Aleixandre Benavent, JL. (2014). Efecto genotipo sobre la evolución de los fenoles y azúcares en cinco clones de variedades de Vitis vinifera para diferentes estadios fenológicos. Enoviticultura. 26:6-27. http://hdl.handle.net/10251/94455S6272

Evolución fenólica y calidad sensorial de los vinos tintos de Bobal elaborados utilizando diferentes tecnologías

[ES] El objetivo del presente trabajo fue conocer la influencia que el estado de madurez de la uva y el tiempo de maceración durante la fermentación, tuvieron sobre la calidad fenólica y sensorial de los vinos tintos de Bobal. Por espectrometría se analizó la Intensidad colorante, Índice de polifenoles totales, Antocianos totales, Taninos, e Índices de Glories. Los resultados obtenidos ponen de manifiesto un aumento de taninos, polifenoles totales, y grado de polimerización, y una disminución de la intensidad colorante y el contenido en antocianos. Los Índices de Etanol y Clorhídrico también aumentan, y con ello el grado de condensación de los taninos y las combinaciones con polisacáridos, al igual que ocurre con el Índice de Gelatina, dando vinos más astringentes. Los vinos obtenidos con distinto tiempo de maceración no presentan diferencias estadísticamente significativas en el análisis sensorial, aunque las sensaciones percibidas por los catadores en los vinos con maceraciones más largas, evidencian connotaciones agradables de concentración y untuosidad.Sánchez Diana, N.; Aleixandre Tudó, JL.; Aleixandre Benavent, JL. (2015). Evolución fenólica y calidad sensorial de los vinos tintos de Bobal elaborados utilizando diferentes tecnologías. Enoviticultura. 37:16-29. http://hdl.handle.net/10251/92944S16293

The production of sulphites during the fermentation of "Tardana" white wines, and "Tempranillo" rosé and red wines in the D.O. Utiel-Requena

[ES] En el presente trabajo se estudió la producción de sulfitos de diferentes cepas de levaduras comerciales durante la fermentación de vinos blancos, rosados y tintos. Para ello se realizó una experiencia con vinos blancos de la variedad `Tardana¿, y dos con vinos rosados y tintos de la variedad `Tempranillo¿. Se determinó el grado alcohólico, la acidez total, acidez volátil, pH, sulfuroso total, azúcares residuales, ácido málico, ácido láctico, ácido cítrico, y glicerol de los vinos, además de la intensidad colorante, el tono, la concentración de antocianos, y el índice de polifenoles totales en los vinos tintos. Los resultados obtenidos pusieron de manifiesto que la producción de sulfitos no superó valores medios de 1 mg/L, y que los valores de los parámetros analizados se encontraban dentro del rango de valores de los vinos de calidad. La fermentación se realizó con dos tipos de cepas de levaduras diferentes, observándose que la reinoculación a los 3 días del arranque de la fermentación daba origen al mínimo contenido de sulfitos.[EN] In the present work, the production of sulphites from different commercial yeast strains during the fermentation of white, rosé and red wines was studied. For this, an experience was carried out with white wines of the `Tardana¿ variety, and two with rosé and red wines of the `Tempranillo¿ variety. The alcoholic degree, total acidity, volatile acidity, pH, total sulphurous, residual sugars, malic acid, lactic acid, citric acid, and glycerol of the wines were determined, in addition to the colour intensity, the tone, the concentration of anthocyanins, and the total polyphenol index in red wines. The results obtained showed that the production of sulphites did not exceed average values of 1 mg/L, and that the values of the analysed parameters were within the range of values of quality wines. The fermentation was carried out with two different types of yeast strains, observing that the re¿inoculation 3 days after the start of the fermentation gave rise to the minimum content of sulphites.Martínez, J.; Chirivella, C.; Aleixandre-Tudó, JL.; Aleixandre Benavent, JL. (2020). Producción de sulfitos durante la fermentación de vinos blancos de "Tardana" y rosados y tintos de "Tempranillo" en la D.O. Utiel-Requena. Enoviticultura. 64:14-29. http://hdl.handle.net/10251/163588S14296