Download or read book Sensor de humedad de la tierra para el control de riego written by Juan Bisquert Mascarell and published by . This book was released on 2008-03-01 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hasta el momento no existe en el mercado un método fiable y económicamente viable que analice la disponibilidad de agua en el suelo y que controle su suministro. El sensor de humedad de la tierra que se muestra en este libro pretende superar este déficit tecnológico. Como resultado final de todo el estudio, se ha obtenido un producto muy competitivo, formado por dicho sensor

Download or read book El control del riego mediante la tensi n matricial del suelo written by and published by . This book was released on 2013 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explica el uso de los sensores matriciales granulares para la medición de la tensión de humedad del suelo. Explica cómo instalar estos sensores y cómo usar los datos registrados para la programación del riego.

Download or read book Caracterizaci n de una sonda TDR para monitoreo de humedad de suelo y su potencial utilidad en manejo de sistemas de riego written by José Manuel Sepúlveda Chávez and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: con la finalidad de determinar criterios de comparación en el uso de cada sensor. Los datos obtenidos permitieron generar un procedimiento de uso para la sonda TDR TRIME IPH, que facilita su trabajo en terreno y la posterior interpretación de los datos registrados para medir la humedad del suelo. Además, se recolectó información acerca de los cuidados en la instalación, almacenamiento de datos y precisión del equipo. Se obtuvo un valor de sensibilidad en el error (RSME) de lectura de los datos observados de un 15% entre los sensores TDR TRIME IPH y EC5, con una regresión lineal de 0,85. El sensor TDR tipo sonda realiza lecturas basadas en la permitividad del medio, proporcionando rápidos registros de humedad y permitiendo realizar mediciones en una gran cantidad de terreno en poco tiempo.

Download or read book Automatizaci n y telecontrol de sistemas de riego written by Antonio Ruiz Canales and published by Marcombo. This book was released on 2020-06-01 with total page 427 pages. Available in PDF, EPUB and Kindle. Book excerpt: "La demanda de recursos hídricos es cada vez mayor a escala local y mundial. A las competencias entre los tradicionales usos agrícolas y los crecientes usos urbanos e industriales se suma el deterioro creciente del medio ambiente. Una gestión adecuada de los recursos hídricos puede ayudar a paliar esta situación y es necesaria para un desarrollo sostenible. Una de las medidas para conseguir una gestión adecuada de los recursos hídricos en la agricultura es la automatización y el telecontrol de los sistemas de riego. Se trata de registrar y repartir de un modo adecuado las cantidades de agua y fertilizantes que se manejan en riego utilizando diversas herramientas tecnológicas proporcionadas por la electrónica digital. La automatización y el telecontrol facilitan la gestión en el uso del agua de riego y la facturación por el volumen de agua consumido. En las redes de agua a presión de zonas regables, la automatización y el telecontrol representan un porcentaje elevado de las inversiones que se realizan. Por otra parte, existe una amplia oferta en el mercado que propone sistemas de telecontrol muy diferentes. En definitiva, la automatización y el telecontrol de los sistemas de riego contribuyen de manera decisiva a la sostenibilidad de los recursos hídricos en un entorno donde las carencias y baja calidad del agua son cada día más crecientes. Este libro ofrece una visión genérica de las posibles aplicaciones de los sistemas de automatización y control en la gestión y manejo de regadíos e instalaciones de riego. A su vez se proporcionan los conocimientos básicos necesarios para que el lector pueda diseñar sistemas de adquisición de datos, supervisión y control (SCADA) y hacer uso del telecontrol para automatizar las instalaciones de riego. Tomando como origen los fundamentos teóricos, esta obra da un enfoque práctico de los temas tratados. Al mismo tiempo se presenta al lector una bibliografía actualizada para poder ampliar conocimientos. Esta edición viene avalada por un equipo de profesores de diferentes universidades españolas (Universidad Miguel Hernández de Elche, Universidad Politécnica de Cartagena, Universidad de Santiago de Compostela y Universidad de Castilla-La Mancha) con líneas de investigación relacionadas con la temática del libro. Esta obra, con un enfoque multidisciplinar, va dirigida a los técnicos que trabajan en los diferentes campos del conocimiento que se presentan en cada capítulo. Los técnicos relacionados con el manejo y mantenimiento de las instalaciones de riego a presión, a quienes se hace referencia en los capítulos del 1 al 8. En segundo lugar, los técnicos en sistemas de automatización y control, reflejado en los capítulos del 9 al 19. Por último, se desarrollan entre los capítulos 20 al 22 los aspectos relacionados con las telecomunicaciones empleadas en estos sistemas. Por su contenido, esta obra es una buena herramienta de consulta para diferentes grados de estudios: formación profesional, diplomatura, licenciatura y tercer ciclo."

Download or read book Dise o de un sistema electr nico para riego de c sped de jard n empleando un sensor de humedad de suelos y comunicaci n inal mbrica written by Zulema Varas Salazar and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photoelectrochemical Solar Fuel Production written by Sixto Giménez and published by Springer. This book was released on 2016-04-29 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores the conversion for solar energy into renewable liquid fuels through electrochemical reactions. The first section of the book is devoted to the theoretical fundamentals of solar fuels production, focusing on the surface properties of semiconductor materials in contact with aqueous solutions and the reaction mechanisms. The second section describes a collection of current, relevant characterization techniques, which provide essential information of the band structure of the semiconductors and carrier dynamics at the interface semiconductor. The third, and last section comprises the most recent developments in materials and engineered structures to optimize the performance of solar-to-fuel conversion devices.

Download or read book The Physics of Solar Cells written by Juan Bisquert and published by CRC Press. This book was released on 2017-11-15 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book provides an explanation of the operation of photovoltaic devices from a broad perspective that embraces a variety of materials concepts, from nanostructured and highly disordered organic materials, to highly efficient devices such as the lead halide perovskite solar cells. The book establishes from the beginning a simple but very rich model of a solar cell, in order to develop and understand step by step the photovoltaic operation according to fundamental physical properties and constraints. It emphasizes the aspects pertaining to the functioning of a solar cell and the determination of limiting efficiencies of energy conversion. The final chapters of the book establish a more refined and realistic treatment of the many factors that determine the actual performance of experimental devices: transport gradients, interfacial recombination, optical losses and so forth. The book finishes with a short review of additional important aspects of solar energy conversion, such as the photonic aspects of spectral modification, and the direct conversion of solar photons to chemical fuel via electrochemical reactions.

Download or read book Irrigation and Drainage Engineering written by Peter Waller and published by Springer. This book was released on 2015-11-18 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook focuses specifically on the combined topics of irrigation and drainage engineering. It emphasizes both basic concepts and practical applications of the latest technologies available. The design of irrigation, pumping, and drainage systems using Excel and Visual Basic for Applications programs are explained for both graduate and undergraduate students and practicing engineers. The book emphasizes environmental protection, economics, and engineering design processes. It includes detailed chapters on irrigation economics, soils, reference evapotranspiration, crop evapotranspiration, pipe flow, pumps, open-channel flow, groundwater, center pivots, turf and landscape, drip, orchards, wheel lines, hand lines, surfaces, greenhouse hydroponics, soil water movement, drainage systems design, drainage and wetlands contaminant fate and transport. It contains summaries, homework problems, and color photos. The book draws from the fields of fluid mechanics, soil physics, hydrology, soil chemistry, economics, and plant sciences to present a broad interdisciplinary view of the fundamental concepts in irrigation and drainage systems design.

Download or read book A Method of Measuring Earth Resistivity written by Frank Wenner and published by . This book was released on 1916 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Precision Agriculture Technology and Economic Perspectives written by Søren Marcus Pedersen and published by Springer. This book was released on 2017-11-15 with total page 282 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents cases from different countries with a main focus on the perspectives of using precision farming in Europe. Divided into 12 chapters it addresses some of the most recent developments and aspects of precision farming. The intention of this book is to provide an overview of some of the most promising technologies with precision agriculture from an economic point of view. Each chapter has been put together so that it can be read individually should the reader wish to focus on one particular topic. Precision Farming as a farm technology benefits from large-scale advantages due to relatively high investment costs and is primarily adopted on farms with medium to large field areas.

Download or read book The Physics of Solar Energy Conversion written by Juan Bisquert and published by CRC Press. This book was released on 2020-06-09 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Research on advanced energy conversion devices such as solar cells has intensified in the last two decades. A broad landscape of candidate materials and devices were discovered and systematically studied for effective solar energy conversion and utilization. New concepts have emerged forming a rather powerful picture embracing the mechanisms and limitation to efficiencies of different types of devices. The Physics of Solar Energy Conversion introduces the main physico-chemical principles that govern the operation of energy devices for energy conversion and storage, with a detailed view of the principles of solar energy conversion using advanced materials. Key Features include: Highlights recent rapid advances with the discovery of perovskite solar cells and their development. Analyzes the properties of organic solar cells, lithium ion batteries, light emitting diodes and the semiconductor materials for hydrogen production by water splitting. Embraces concepts from nanostructured and highly disordered materials to lead halide perovskite solar cells Takes a broad perspective and comprehensively addresses the fundamentals so that the reader can apply these and assess future developments and technologies in the field. Introduces basic techniques and methods for understanding the materials and interfaces that compose operative energy devices such as solar cells and solar fuel converters.

Download or read book Modeling and Control of Greenhouse Crop Growth written by Francisco Rodríguez and published by Springer. This book was released on 2014-11-01 with total page 275 pages. Available in PDF, EPUB and Kindle. Book excerpt: A discussion of challenges related to the modeling and control of greenhouse crop growth, this book presents state-of-the-art answers to those challenges. The authors model the subsystems involved in successful greenhouse control using different techniques and show how the models obtained can be exploited for simulation or control design; they suggest ideas for the development of physical and/or black-box models for this purpose. Strategies for the control of climate- and irrigation-related variables are brought forward. The uses of PID control and feedforward compensators, both widely used in commercial tools, are summarized. The benefits of advanced control techniques—event-based, robust, and predictive control, for example—are used to improve on the performance of those basic methods. A hierarchical control architecture is developed governed by a high-level multiobjective optimization approach rather than traditional constrained optimization and artificial intelligence techniques. Reference trajectories are found for diurnal and nocturnal temperatures (climate-related setpoints) and electrical conductivity (fertirrigation-related setpoints). The objectives are to maximize profit, fruit quality, and water-use efficiency, these being encouraged by current international rules. Illustrative practical results selected from those obtained in an industrial greenhouse during the last eight years are shown and described. The text of the book is complemented by the use of illustrations, tables and real examples which are helpful in understanding the material. Modeling and Control of Greenhouse Crop Growth will be of interest to industrial engineers, academic researchers and graduates from agricultural, chemical, and process-control backgrounds.

Download or read book Nanostructured Energy Devices written by Juan Bisquert and published by CRC Press. This book was released on 2014-11-11 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the pressing needs of society, low cost materials for energy devices have experienced an outstanding development in recent times. In this highly multidisciplinary area, chemistry, material science, physics, and electrochemistry meet to develop new materials and devices that perform required energy conversion and storage processes with high efficiency, adequate capabilities for required applications, and low production cost. Nanostructured Energy Devices: Equilibrium Concepts and Kinetics introduces the main physicochemical principles that govern the operation of energy devices. It includes coverage of the physical principles that control energy devices made of nanostructured and bulk materials, with the main attention focused on solution processed thin film technologies. The book analyzes the fundamental concepts, main properties, and key applications of energy devices that are made using nanostructured materials and innovative thin film low cost technologies. This includes hybrid and organic solar cells, electrochemical batteries, diodes, LEDs and OLEDs, transistors, and the direct conversion of solar radiation to chemical fuels. It decodes rigorous formulation of thermodynamic concepts to establish energy diagrams, and explains also the fundamental kinetic models that determine the flow of electrons and ions in the device. The author lays out the main properties of semiconductors and their junctions for applications in solar cell and solar fuel devices. He emphasizes a unified view of the device operation principles that covers well-known examples but also enables you to discuss original research topics on a solid ground. Although a challenging field of science and technology, energy devices such as solar cells and batteries have the potential to impact the creation of a carbon-free energy economy. However, the field draws scientists from a broad set of backgrounds, united towards common goals. This text presents the main concepts that apply to several types of devices, from a very basic level so that you can gain insight into the general view of principles of operation of the energy devices. It pulls together the views and terminologies used by several communities to create better communication and increased collaboration among them.

Download or read book Futuristic Trends in Networks and Computing Technologies written by Pradeep Kumar Singh and published by Springer Nature. This book was released on 2020-04-21 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the Second International Conference on Futuristic Trends in Network and Communication Technologies, FTNCT 2019, held in Chandigarh, India, in November 2019. The 49 revised full papers and 6 short papers presented were carefully reviewed and selected from 226 submissions. The prime aim of the conference is to invite researchers from different domains of network and communication technologies to a single platform to showcase their research ideas. The selected papers are organized in topical sections on network and computing technologies; wireless networks and Internet of Things (IoT); futuristic computing technologies; communication technologies, security and privacy.

Download or read book Galveston written by Nic Pizzolatto and published by Simon and Schuster. This book was released on 2011-06-14 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: After being diagnosed with lung cancer, Roy Cady kills the men hired by his loan shark boss to kill him, and flees to Galveston, Texas, with a prostitute and her young sister, where they face more problems.

Download or read book Nanostructured Energy Devices written by Juan Bisquert and published by CRC Press. This book was released on 2017-07-28 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second volume, Foundations of Carrier Transport, presents a catalogue of the physics of carrier transport in semiconductors with a view to energy device models. We systematically explain the diffusion-drift model that is central to solar cell operation, the different responses of band bending and electrical field distribution that occur when a voltage is applied to a device with contacts and the central issue of injection and mechanisms of contacts. We describe the carrier transport in disordered materials that often appear as good candidates for easily processed solar cells. There are also excursions into other important topics such as the transistor configuration and the frequency domain techniques as Impedance Spectroscopy that produce central experimental tools for the characterization of the devices.

Download or read book Advances in Computer Communication and Computational Sciences written by Sanjiv K. Bhatia and published by Springer. This book was released on 2018-08-22 with total page 420 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book includes the insights that reflect ‘Advances in Computer and Computational Sciences’ from upcoming researchers and leading academicians across the globe. It contains the high-quality peer-reviewed papers of ‘International Conference on Computer, Communication and Computational Sciences (IC4S 2017), held during 11–12 October, 2017 in Thailand. These papers are arranged in the form of chapters. The content of this book is divided into two volumes that cover variety of topics such as intelligent hardware and software design, advanced communications, intelligent computing techniques, intelligent image processing, and web and informatics. This book helps the perspective readers’ from computer industry and academia to derive the advances of next generation computer and communication technology and shape them into real life applications.