The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Oriol Munne - One of the best experts on this subject based on the ideXlab platform.
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Wireless Sensor Network Technology for Monitoring Moisture Content of Wood
SSRN Electronic Journal, 2014Co-Authors: Ivan Arakistain, Jose Miguel Abascal, Oriol MunneAbstract:Leaks represent a very important hazard for the buildings and they can affect all sorts of building materials and specially wood due to its hygroscopic properties. Excessive Moisture content can affect in a negative way building processes such as the installation of wooden floors or the use of wood as a structural material. Moisture Meters can provide prompt and non-destructive determination of wood Moisture, and as such are among the most useful tools available to wood products manufacturers and scientists. However, a continuous monitoring system is needed in order to avoid excessive Moisture content which can damage wooden floors as well as structural wood. Data and procedures are presented in order to develop a suitable monitoring tool based on wireless sensor networks to provide an electronic tool of active security both for the installation of wooden floors and for the proper maintenance of existent buildings which have a timber structure.
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Wireless sensor network technology for Moisture monitoring of wood.
arXiv: Other Computer Science, 2013Co-Authors: Ivan Arakistain, Jose Miguel Abascal, Oriol MunneAbstract:Leaks represent a very important hazard for the buildings and they can affect all sorts of building materials and specially wood due to its hygroscopic properties. Excessive Moisture content can affect in a negative way building processes such as the installation of wooden floors or the use of wood as a structural material. Moisture Meters can provide prompt and non-destructive determination of wood Moisture, and as such are among the most useful tools available to wood products manufacturers and scientists. However, a continuous monitoring system is needed in order to avoid excessive Moisture content which can damage wooden floors as well as structural wood. Data and procedures are presented in order to develop a suitable monitoring tool based on wireless sensor networks to provide an electronic tool of active security both for the installation of wooden floors and for the proper maintenance of existent buildings which have a timber structure.
Parra Díaz, Francisco Javie - One of the best experts on this subject based on the ideXlab platform.
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Interacción de la frecuencia de riego, relación de solidez y tensión cortante en la profundidad de enraizamiento de la soya (Glycine max (L.) Merril) | Irrigation frequency, solidity ratio and shear stress interaction on soybean rooting depth
UDO Agrícola, 2018Co-Authors: Hossne García, Américo José, Méndez Natera, Jesús Rafael, Trujillo Galindo, María Esthe Del Valle, Parra Díaz, Francisco JavieAbstract:Se realizó un estudio del sistema radical de soya (Glycine max (L.) Merrill cv. SAN BAIBA) para evaluar el alcance en penetración vertical de las raíces en función de la humedad, relación de solidez, tensión normal y tensión cortante. La soya es de importancia agrícola de la zona, en donde el suelo es franco arenoso incompresible y de fácil deformación. Los suelos son compactados producto del tránsito de maquinaria, pisoteo, pies de arado y rastras, y procesos de contracción y expansión. Al aumentar el peso por eje de los equipos agrícolas se profundiza la compactación. Por similitud, la prueba Proctor se realiza en tres capas de suelo causando mayor compactación en la capa inferior. El objetivo fue estudiar en soya: (a) El efecto de la humedad, la solidez y efecto combinado período de riego*solidez del suelo sobre la profundización de suelo enraizado y (b) Las relaciones de la tensión normal y cortante sobre la profundidad de enraizado. Se utilizaron el método Proctor, triaxial, medidores de humedad y cilindros plásticos 30X30X1,5 cm. Se empleó bloques al azar en arreglo factorial simple con cuatro niveles de compactación por capa, (0, 12, 24, 36) y cuatro de humedad a través de cuatro frecuencias de riego (todos los días, interdiario, cada dos días y cada tres días), análisis de variancia, MDS, regresión múltiple y superficie de respuesta. Entre los resultados, la profundidad de enraizado logró el 98,51 % para riego diario, 94,11 % para riego interdiario, de 90,09 % para una relación de solidez media de 52,5 sin diferencia significativa. Se concluyó que la profundidad de enraizamiento de soya fue más positivamente influenciado por la humedad que por los efectos de la compactación y que la tensión cortante no inhibiría el crecimiento radical para humedades cercanas a la capacidad de campo. Palabras clave: Suelos de sabana, cizalleo, frecuencias de riego, solidez, humedad del suelo, raíces. ABSTRACT A study of the root system of soybean (Glycine max (L.) Merrill cv. SAN Baiba) was performed to assess the extent to vertical root penetration in terms of Moisture, solidity ratio, normal and shear stress. Soybean is of agricultural importance of the area, where the soil is sandy loam, easily compressible and deformable. The soils are compacted product of the machinery passes, trampling, plows and harrows pans, and processes of contraction and expansion. By increasing the axle load of farm equipment deepens compaction. By similarity, the Proctor test runs in three layers carrying higher compaction in the lower layer. The aim was to study in soybeans: (a) The effect of Moisture, soil solidity ratio and the combined effect of irrigation period * soil solidity on root soil depth (b) The relationship of normal and shear stress on the depth of rooted. It was used the Proctor method, triaxial, Moisture Meters and plastic cylinders 30x30x1.5 cm. Randomized block was used in simple factorial arrangement with four levels of compaction layer (0, 12, 24, 36) and four Moisture through four irrigation frequencies (daily, inter-day, every two days and three days), analysis of variance, MDS, multiple regression and response surface. The results, depth of rooting achieved 98.51% for daily watering, irrigation inter-day 94.11% from 90.09% for a mean solidity ratio of 52.5 without significant difference. It was concluded that soybean rooting depth was more positively influenced by Moisture than the effects of compaction, and that shear stress did not inhibit root growth to Moisture near field capacity. Key words: savannah soil, shear tension, irrigation frequency, soil solidity, roots
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Interacción de la frecuencia de riego, relación de solidez y tensión cortante en la profundidad de enraizamiento de la soya (Glycine max (L.) Merril)
Universidad de Oriente, 2012Co-Authors: Hossne García, Américo José, Méndez Natera, Jesús Rafael, Trujillo Galindo, María Esthe Del Valle, Parra Díaz, Francisco JavieAbstract:A study of the root system of soybean (Glycine max (L.) Merrill cv. SAN Baiba) was performed to assess the extent to vertical root penetration in terms of Moisture, solidity ratio, normal and shear stress. Soybean is of agricultural importance of the area, where the soil is sandy loam, easily compressible and deformable. The soils are compacted product of the machinery passes, trampling, plows and harrows pans, and processes of contraction and expansion. By increasing the axle load of farm equipment deepens compaction. By similarity, the Proctor test runs in three layers carrying higher compaction in the lower layer. The aim was to study in soybeans: (a) The effect of Moisture, soil solidity ratio and the combined effect of irrigation period * soil solidity on root soil depth (b) The relationship of normal and shear stress on the depth of rooted. It was used the Proctor method, triaxial, Moisture Meters and plastic cylinders 30x30x1.5 cm. Randomized block was used in simple factorial arrangement with four levels of compaction layer (0, 12, 24, 36) and four Moisture through four irrigation frequencies (daily, inter-day, every two days and three days), analysis of variance, MDS, multiple regression and response surface. The results, depth of rooting achieved 98.51% for daily watering, irrigation inter-day 94.11% from 90.09% for a mean solidity ratio of 52.5 without significant difference. It was concluded that soybean rooting depth was more positively influenced by Moisture than the effects of compaction, and that shear stress did not inhibit root growth to Moisture near field capacity.Se realizó un estudio del sistema radical de soya (Glycine max (L.) Merrill cv. SAN BAIBA) para evaluar el alcance en penetración vertical de las raíces en función de la humedad, relación de solidez, tensión normal y tensión cortante. La soya es de importancia agrícola de la zona, en donde el suelo es franco arenoso incompresible y de fácil deformación. Los suelos son compactados producto del tránsito de maquinaria, pisoteo, pies de arado y rastras, y procesos de contracción y expansión. Al aumentar el peso por eje de los equipos agrícolas se profundiza la compactación. Por similitud, la prueba Proctor se realiza en tres capas de suelo causando mayor compactación en la capa inferior. El objetivo fue estudiar en soya: (a) El efecto de la humedad, la solidez y efecto combinado período de riego*solidez del suelo sobre la profundización de suelo enraizado y (b) Las relaciones de la tensión normal y cortante sobre la profundidad de enraizado. Se utilizaron el método Proctor, triaxial, medidores de humedad y cilindros plásticos 30X30X1,5 cm. Se empleó bloques al azar en arreglo factorial simple con cuatro niveles de compactación por capa, (0, 12, 24, 36) y cuatro de humedad a través de cuatro frecuencias de riego (todos los días, interdiario, cada dos días y cada tres días), análisis de variancia, MDS, regresión múltiple y superficie de respuesta. Entre los resultados, la profundidad de enraizado logró el 98,51 % para riego diario, 94,11 % para riego interdiario, de 90,09 % para una relación de solidez media de 52,5 sin diferencia significativa. Se concluyó que la profundidad de enraizamiento de soya fue más positivamente influenciado por la humedad que por los efectos de la compactación y que la tensión cortante no inhibiría el crecimiento radical para humedades cercanas a la capacidad de campo
Mark J Mendell - One of the best experts on this subject based on the ideXlab platform.
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Relating measured Moisture of gypsum board to estimated water activity using Moisture Meters
Building and Environment, 2019Co-Authors: Rachel I. Adams, Kazukiyo Kumagai, Janet M. Macher, Wenhao Chen, Mark J MendellAbstract:Dampness and mold in buildings are linked to multiple adverse health effects. The principal factor allowing microbial growth in a material is the water activity (aw), the amount of metabolically available water. To assess the practicality of a portable “aw sensor” that estimates aw by measuring equilibrium relative humidity (ERH) at a surface, we measured the time required, starting at typical room RH, to reach a stable ERH reading on gypsum board at an elevated aw supportive of microbial growth. To estimate aw with commonly used Moisture Meters, we compared multiple Meters (two types: pinless or 2-pin) to each other and to the portable aw sensor, for several gypsum board configurations, at multiple targeted ERH conditions. The aw sensor response was too slow for practical use. Across board configurations (i.e., single or double layers, unpainted or painted, and Moisture-resistant), relationships between Moisture meter readings and estimated aw differed, as expected, between sorbing and desorbing conditions. Some pinless Meters showed inadequate sensitivity to low Moisture conditions. Unexpected irregularities in responses were seen, especially on painted board. We provide estimated ranges of Moisture meter readings, for each meter and board configuration, corresponding with selected aw values potentially supportive of microbial growth. One or two Meters showed most promise for use in estimating critical aw values, although with substantial caveats. The irregularities observed may limit the potential for estimating aw from Moisture meter readings in real world applications, even with prior collection of the data needed across different Meters, conditions, and building materials.
Ivan Arakistain - One of the best experts on this subject based on the ideXlab platform.
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Wireless Sensor Network Technology for Monitoring Moisture Content of Wood
SSRN Electronic Journal, 2014Co-Authors: Ivan Arakistain, Jose Miguel Abascal, Oriol MunneAbstract:Leaks represent a very important hazard for the buildings and they can affect all sorts of building materials and specially wood due to its hygroscopic properties. Excessive Moisture content can affect in a negative way building processes such as the installation of wooden floors or the use of wood as a structural material. Moisture Meters can provide prompt and non-destructive determination of wood Moisture, and as such are among the most useful tools available to wood products manufacturers and scientists. However, a continuous monitoring system is needed in order to avoid excessive Moisture content which can damage wooden floors as well as structural wood. Data and procedures are presented in order to develop a suitable monitoring tool based on wireless sensor networks to provide an electronic tool of active security both for the installation of wooden floors and for the proper maintenance of existent buildings which have a timber structure.
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Wireless sensor network technology for Moisture monitoring of wood.
arXiv: Other Computer Science, 2013Co-Authors: Ivan Arakistain, Jose Miguel Abascal, Oriol MunneAbstract:Leaks represent a very important hazard for the buildings and they can affect all sorts of building materials and specially wood due to its hygroscopic properties. Excessive Moisture content can affect in a negative way building processes such as the installation of wooden floors or the use of wood as a structural material. Moisture Meters can provide prompt and non-destructive determination of wood Moisture, and as such are among the most useful tools available to wood products manufacturers and scientists. However, a continuous monitoring system is needed in order to avoid excessive Moisture content which can damage wooden floors as well as structural wood. Data and procedures are presented in order to develop a suitable monitoring tool based on wireless sensor networks to provide an electronic tool of active security both for the installation of wooden floors and for the proper maintenance of existent buildings which have a timber structure.
Stuart O Nelson - One of the best experts on this subject based on the ideXlab platform.
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density independent functions for on line microwave Moisture Meters a general discussion
Measurement Science and Technology, 1998Co-Authors: Samir Trabelsi, Stuart O NelsonAbstract:Density-independent calibration functions are a suitable solution for problems involving variation of bulk density in on-line determination of the Moisture content in particulate materials by microwave techniques. Foundations of three of these functions are briefly reviewed and their frequency and temperature dependences are shown for wheat. Their effectivenesses for prediction of the Moisture content are compared and optimum conditions for a cost-effective Moisture meter are discussed.