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Physical and thermal properties of mud-dominant sediment from the Joetsu Basin in the eastern margin of the Japan Sea ArchiMer
Goto, Shusaku; Yamano, Makoto; Morita, Sumito; Kanamatsu, Toshiya; Hachikubo, Akihiro; Kataoka, Satsuki; Tanahashi, Manabu; Matsumoto, Ryo.
Physical properties (bulk density and porosity) and thermal properties (thermal conductivity, heat capacity, specific heat, and thermal diffusivity) of sediment are crucial parameters for basin modeling. We measured these physical and thermal properties for mud-dominant sediment recovered from the Joetsu Basin, in the eastern margin of the Japan Sea. To determine thermal conductivity, heat capacity, and thermal diffusivity, the dual-needle probe method was applied. Grain density and grain thermal properties for the mud-dominant sediment were estimated from the measured physical and thermal properties by applying existing models of physical and thermal properties of sediment. We suggest that the grain density, grain thermal conductivity, and grain thermal...
Tipo: Text Palavras-chave: Thermal conductivity; Thermal diffusivity; Heat capacity; Specific heat; Dual-needle probe method; Mineral composition.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00387/49789/50343.pdf
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EFFECT OF SOIL MANAGEMENT ON THEIR THERMAL PROPERTIES R.C. Suelo Nutr. Veg.
Dec,Dorota; Dörner,José; Horn,Rainer.
In order to determine the effect of soil management on its thermal properties, undisturbed soil samples were taken from two tillage treatments (conventional and conservation treatment) at two depths (0-30cm and 30-60cm) of a Stagnic Luvisol (silt loam) before and after directly wheeling. The experimental field, located in Harste/Goettingen, Germany, was cultivated with sugar beet (Beta vulgaris). To calculate thermal properties of the soil, the volumetric water content (TDR needles) and temperature (pT 100 thermistors) during the simulation of the daily fluctuation of temperature were registered in laboratory and then the thermal conductivity, volumetric heat capacity and heat diffusivity were calculated following the damping depth method and the...
Tipo: Journal article Palavras-chave: Heat capacity; Heat conductivity; Thermal diffusivity; Tillage system.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912009000100003
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Relationship between thermal properties of canola pods (without seed) with moisture content, porosity and chemical composition of pods CIGR Journal
Azadbakht, Mohsen; Ghajarjazi, Ehsan; Ghaderi-Far, Farshid.
Thermal properties of canola pods including coefficients of thermal conductivity, thermal diffusivity and specific heat and chemical composition of rapeseed pods were measured at three levels of conventional canola varieties cultivated in the north of Iran (Hyola 50, Hyola 401 and Hyola 420) and in three times before harvest, while harvest and post-harvest. Then the relationship between the thermal properties of canola pods with chemicals, moisture and porosity were investigated. Conductivity coefficient was resulted from linear thermal method, the specific heat was obtained from mixing method and diffusion coefficients were calculated by the formula. The results showed that changes of variety and time of sampling were significant on thermal conductivity...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal conductivity; Specific heat; Thermal diffusivity; Canola pod; Chemical composition; Porosity.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3613
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Moisture dependent thermal properties of ground flaxseed (Linum usitatissimum) CIGR Journal
Singh, Ajit Kumar.
The thermal properties of flours have been extensively used as engineering parameter in the design of processes and equipment to handle, transport, storage purpose and for protection of quality of technological process by processing to final products. The thermal properties of ground flaxseed (Linum usitatissimum) were investigated as a function of moisture content in the range of 4.82%-29.32% dry basis (d.b.) at six moisture levels, using a KD2 Pro Thermal Properties Analyzer. As the moisture content of ground flaxseed increased from 4.82 to 29.32 (% d.b.), the thermal conductivity, specific heat and thermal diffusivity increased from 0.122 to 0.184 W m-1 K-1, 2.94 to 5.64 kJ kg-1 K-1, and 6.42×10-8 to 8.11×10-8 m2/s, respectively. Ground flaxseed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ground flaxseed; Thermal properties; Bulk density; Thermal conductivity; Specific heat; Thermal diffusivity.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3330
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Determination of thermal properties of the Cavendish banana peel as a function of temperature and moisture CIGR Journal
Azadbakht, Mohsen; Asghari, Ali; Akbarnejad, Akbar.
The three most important characteristics of heat transfer in materials are thermal conductivity, thermal diffusivity and specific heat capacity. The thermal conductivity of banana peel was measured with a linear heat source. The specific heat of banana peel was obtained with a calorimeter. The thermal diffusivity coefficients were obtained by using mathematical equations. The results showed that the effect of moisture content and temperature on the thermal conductivity coefficients, specific heat and thermal diffusivity coefficients was significant at 1%. By increasing temperature, the thermal conductivity coefficients have increased in all moisture content. By reducing the moisture content the thermal conductivity coefficients were reduced in all...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal conductivity; Banana peel; Thermal diffusivity; Specific heat.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3415
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Relationship between Root Growth of 'Thompson Seedless' Grapevines and Soil Temperature Chilean J. Agric. Res.
Callejas R,Rodrigo; Canales P,Pablo; García de Cortázar G. de C,Víctor.
With the purpose of characterizing the growth of the root system of table grapes (Vitis vinifera L.) cv. Thompson Seedless and its relationship with soil temperature, research was carried out during the 2004-2005 growing season in vineyards in the Copiapó and Huasco Valleys. Four plants were chosen and rhizotrons were used to measure the growth of the root system. Measurements were performed once a week from September 2004 to September 2005, estimating the intensity of root growth and its annual distribution in the ranges of 0 to 40, 40 to 80 and 80 to 120 cm of soil depth. Temperature sensors were installed in four plants at 25, 50, 75 and 100 cm of soil depth, and the temperature was registered every 1 h. The thermal diffusivity of the soil was...
Tipo: Journal article Palavras-chave: Roots; Thermal diffusivity; Tablegrape.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400003
Registros recuperados: 6
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