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	Provedor de dados CIGR Journal (2) ArchiMer (1) Ciência e Agrotecnologia (1) Electron. J. Biotechnol. (1) REA (1) PAB (1) Rev. Bras. Ciênc. Solo (1) Mais... Autor Aguilar,Oscar Fernando Silva (1) Aregbesola, Omotayo Adeteju (1) Arredondo,Jorge Alberto Andaverde (1) Borges,Luiza K. (1) Bouchonneau, Nadege (1) CRUVINEL,PAULO ESTEVÃO (1) Choqueuse, Dominique (1) Ezeokoli, Obinna Ikenna (1) Faborode, Micheal Oladimeji (1) Fundora,Artemio Jesús Benitez (1) Gao,Chengde (1) Grosjean, Francois (1) Hu,Huanlong (1) Lu,Haibo (1) Mendes,Lourival Marin (1) Mendes,Rafael Farinassi (1) Nie,Yi (1) Peng,Shuping (1) Perreux, Dominique (1) Poncet, Emmanuel (1) Mais... Palavra-chave Thermal properties (8) Agricultural engineering (1) Agricultural wastes (1) Bulk density (1) Combustion (1) Conductivity (1) Dry calyxes (1) Error propagation (1) Food processing Roselle calyxes (1) Fresh calyxes (1) Geothermal (1) Ground flaxseed (1) Hardness (1) Instrumentation (1) Layered structure (1) Mechanical properties (1) Microprocessors (1) Microstructure (1) Modelling (1) Nano-hydroxyapatite (1) Mais... Tipo do documento Info:eu-repo/semantics/article (6) Journal article (1) Text (1) Ano 2019 (1) 2018 (1) 2016 (2) 2015 (1) 2012 (1) 2010 (1) 2000 (1) Mais... País Brazil (4) China (2) Chile (1) France (1) Idioma Inglês (8)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 8 Primeira ... 1 ... Última Poly (l-lactide acid) improves complete nano-hydroxyapatite bone scaffolds through the microstructure rearrangement Electron. J. Biotechnol. Shuai,Cijun; Nie,Yi; Gao,Chengde; Lu,Haibo; Hu,Huanlong; Wen,Xuejun; Peng,Shuping. Cracks often occur when nano-hydroxyapatite bone scaffolds are fabricated with selective laser sintering, which affect the performance of scaffolds. In this study, a small amount of poly (l-lactide acid) (PLLA) was added into nano-hydroxyapatite (nano-HAP) powder by mechanical blending in order to improve the sintering properties. The nano-HAP powder combined with 1wt % PLLA was sintered under different laser power (5W, 7.5W, 10W, 12.5W, 15W and 20W). The fabricated scaffolds were characterized using Scanning Electron Microscope (SEM), X-ray Diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and Micro Hardness Tester. The results showed that nano-HAP particles grew up quickly with the laser power increasing, and there were many strip-like... Tipo: Journal article Palavras-chave: Hardness; Microstructure; Nano-hydroxyapatite; Thermal properties. Ano: 2012 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582012000600004 HYSTERESIS AND THERMAL INERTIA OF SPHERES OF ALTERNATIVE MATERIALS FOR BLACK GLOBE THERMOMETERS REA Sampaio,Carlos A. de P.; Terezo,Rodrigo F.; Vassem Júnior,Ilson; Silva,Leonardo M. da C.; Borges,Luiza K.. ABSTRACT This research was conducted with the objective of evaluating the thermal inertia and hysteresis of the following materials in a wind tunnel: hollow copper sphere with 150.0 mm diameter used as standard in globe thermometers, hollow brass sphere with 75.0 mm diameter, and two hollow plastic spheres with 115.5 and 69.7 mm diameter. The results showed that the thermal inertia and hysteresis for the hollow copper sphere were approximately 24 and 28 min, respectively; these values were bigger than those obtained for the other spheres, implying faster responses of these. While there were no statistical differences in the measurements conducted by globe thermometers which are used to indicate the black globe temperature with the different types of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Thermal comfort; Instrumentation; Thermal properties; Radiant temperature. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000500567 Experimental testing and modelling of an industrial insulated pipeline for deep sea application ArchiMer Bouchonneau, Nadege; Sauvant-moynot, Valerie; Choqueuse, Dominique; Grosjean, Francois; Poncet, Emmanuel; Perreux, Dominique. Ultra-deep water (up to 3000 in) is one of the next frontiers for oil offshore exploitation. It requires the use of conduits having to resist in the long run (durability about 25 years) the mechanical and environmental requests. One of the key points is the thermal insulation of the structure to avoid the formation of hydrates and paraffin plugs inside of the steel pipe. Over the past 10 years, many studies were performed to better understand the behaviour of the syntactic foams used as thermal insulation of pipes for deepwater production, but few tests were run on industrial prototypes to reach the actual thermal properties of the systems. This paper presents the numerical and experimental characterizations of an industrial multilayered insulated pipeline... Tipo: Text Palavras-chave: Layered structure; Subsea; Thermal properties; Modelling; Syntactic foam. Ano: 2010 URL: http://archimer.ifremer.fr/doc/00011/12248/9032.pdf Low-cost microprocessed instrument for evaluating soil temperature profile PAB CRUVINEL,PAULO ESTEVÃO. This paper describes a low-cost microprocessed instrument for in situ evaluating soil temperature profile ranging from -20.0°C to 99.9°C, and recording soil temperature data at eight depths from 2 to 128 cm. Of great importance in agriculture, soil temperature affects plant growth directly, and nutrient uptake as well as indirectly in soil water and gas flow, soil structure and nutrient availability. The developed instrument has potential applications in the soil science, when temperature monitoring is required. Results show that the instrument with its individual sensors guarantees ±0.25°C accuracy and 0.1°C resolution, making possible localized management changes within decision support systems. The instrument, based on complementary metal oxide... Tipo: Info:eu-repo/semantics/article Palavras-chave: Soil management equipment; Thermal properties; Microprocessors; Sensors. Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2000001100020 Determining the In Situ Apparent Thermal Diffusivity of a Sandy Soil Rev. Bras. Ciênc. Solo Aguilar,Oscar Fernando Silva; Arredondo,Jorge Alberto Andaverde; Trujillo,Beatris Adriana Escobedo; Fundora,Artemio Jesús Benitez. ABSTRACT: The thermal wave amplitude method is used to determine soil thermal diffusivity in situ for a sandy soil in Mexico (Coatzacoalcos, Veracruz). Soil diurnal temperature fluctuations were measured from depths of 0.05 to 0.65 m, in 0.01 m increments, during the months of April and August. Five mean diffusivity values were obtained experimentally, corresponding to the different depths combination. The soil thermal diffusivity ranged between 2.26 × 10−7 and 8.71 × 10−7 m2 s−1. The diffusivity values obtained are within the absolute ranges reported in the literature. A positive linear effect between the diffusivity values and depth was observed on a homogeneous sandy soil. These increments are due to the soil moisture variations and the volumetric... Tipo: Info:eu-repo/semantics/article Palavras-chave: Geothermal; Thermal properties; Conductivity; Error propagation. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100425 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 Engineering properties of Roselle (Hibiscus sabdariffa) calyxes CIGR Journal Aregbesola, Omotayo Adeteju; Faborode, Micheal Oladimeji; Ezeokoli, Obinna Ikenna. Physical, mechanical and thermal properties of dried and freshly harvested Roselle calyxes were determined using standard procedures based on literature. The obtained results showed that in terms of shape and size, the red variety was more slender with a pointed apex when compared to the dark red variety (Hibiscus sabdariffa. L). Porosity values were close for the dried calyxes and were 53.85% for fresh calyxes. A high percent (72.21%) of whole calyxes was obtained for the fresh calyxes when compared to that for the two varieties of dried calyxes studied. The value of angle of repose for the fresh calyxes was 51.530 while the dry calyxes had lower values (23.10 and 22.40o) for red and dark red calyxes, respectively. Results also showed that the coefficient... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural engineering; Food processing Roselle calyxes; Physical properties; Mechanical properties; Thermal properties; Dry calyxes; Fresh calyxes. Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3664 THERMAL STABILITY OF Pinus oocarpa AND MAIZE COB PARTICLEBOARDS Ciência e Agrotecnologia Scatolino,Mário Vanoli; Protásio,Thiago de Paula; Mendes,Rafael Farinassi; Mendes,Lourival Marin. Agricultural waste materials are generated in large quantities in Brazil. These can accumulate and cause serious environmental problems. One of the most commonly generated wastes in the brazilian agricultural culture is the maize cob. Being lignocellulosic in nature, the maize cob can find use as the raw material in the production of particleboards mainly concerned with furniture making. Therefore, studies regarding its thermal stability and fire resistance would be interesting. The aim of this study was to evaluate the combustibility and thermal stability of the particleboards produced from maize cob and Pinus oocarpa wood. The percentages in which maize cob was associated with Pinus oocarpa were 0%, 25%, 50%, 75% and 100%. The panels were produced using... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural wastes; Combustion; Thermal properties. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000400348 Registros recuperados: 8 Primeira ... 1 ... Última

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