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Última CARACTERIZAÇÃO MICROMETEOROLÓGICA DE AMBIENTES PROTEGIDOS PARA A PRODUÇÃO VEGETAL 196 Silva, Abimael Gomes da; Costa, Edilson; Zoz, Tiago; Binotti, Flávio Ferreira da Silva. This study evaluates the influence of the four seasons and twelve months of the year on the micrometeorological variables of global solar radiation, air temperature, and relative air humidity in different protected environments for plant production. The protected environment types and the characteristics of the shade screen modify the indoor air temperature. This environment provides greater relative humidity. The global solar radiation percentages in the environments were: full sun (100%); black screen with 30% shading (47.3%); greenhouse with LDPE + 22-30% shading screen under the film (38.1%); aluminized screen with 35% shading (36.9%) and greenhouse with LDPE + 42-50% shading screen under the film (26.9%). The micrometeorological conditions of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Solar radiation; Temperature; Relative humidity; Radiação solar; Temperatura; Umidade Relativa. Ano: 2021 URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6177 Produção de geleia real em colônias de abelhas africanizadas considerando diferentes suplementos proteicos e a influência de fatores ambientais - DOI: 10.4025/actascianimsci.v32i1.6836 Animal Sciences Toledo, Vagner de Alencar Arnaut de; UEM; Neves, Carolina Antunes; Copebrás; Alves, Eloi Machado; UEM; Oliveira, Jussara Ricardo de; Universidade Paranaense; Ruvolo-Takasusuki, Maria Cláudia Colla; UEM; Faquinello, Patrícia; UEM. O objetivo foi avaliar o efeito da suplementação proteica sobre a produção de geleia real em colônias de Apis mellifera e correlacionar esta produção com as variáveis climáticas. Os tratamentos foram: colônias que receberam uma ração elaborada com 35% de proteína; colônias que receberam suplemento proteico comercial com 35% de proteína bruta e colônias que não receberam ração proteica. Não houve diferença (p > 0,05) entre os tratamentos para as variáveis de produção. As médias foram: quantidade de larvas aceitas, 8,56 ± 6,76; porcentagem de aceitação, 29,20 ± 22,03%; quantidade de geleia real produzida por colônia, 1,83 ± 0,82 g e quantidade produzida por cúpula, 213,58 ± 108,36 mg. A precipitação pluviométrica não influenciou (p > 0,05) a produção... Tipo: Pesquisa de campo Palavras-chave: 5.04.05.00-4 Apis mellifera; Nutrição de abelhas; Proteína; Umidade relativa; Temperatura 5.04.05.02-0 Apis mellifera; Honeybee nutrition; Protein; Relative humidity; Temperature. Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/6836 Storage performance of naturally ventilated structure for onion bulbs CIGR Journal Ambe, Wolelaw Endalew; Getahun, Abaye; Demissew, Ayalew; Ambaye, Tesfa. A comparative study of naturally ventilated onion bulb storage structure and traditional in house floor storage was conducted in Fogera plain, Ethiopia to determine their performances.  Onion bulb of Bombay Red cultivar was stored for 90 days in naturally ventilated storage structure and in house floor.  The study was conducted from end of April to Jun 2011.  Hourly temperature and relative humidity of ambient and storage environment were monitored and the physiological weight loss, sprouting percentage, rotting percentage and percentage of marketable bulbs on stored bulb were recorded every ten days interval.  The observation has shown that the temperature profile of naturally ventilated storage structure has followed similar pattern with the ambient... Tipo: Info:eu-repo/semantics/article Palavras-chave: Physiological loss; Relative humidity; Sprouting loss; Temperature; Weight loss. Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3008 Comparison of five commonly used thin-layer moisture transfer models in fitting the re-wetting data of barley CIGR Journal Basunia, Mohammad Ali. Five commonly cited thin-layer rewetting models, including Page, Diffusion, Approximate form of diffusion, Exponential, and Polynomial were compared for their abilities to the fit the experimental re-wetting data of barley based on the root mean square error (RMSE) and mean relative error (MRE) of estimate of the measured and simulated moisture contents.  The comparison shows the Page model is the most suitable model (average, RMSE = 0.176% d.b. and MRE = 0.713% d.b.) followed by the Diffusion model (average RMSE = 0.199% d.b. and MRE = 0.862% d.b) to fit the re-wetting experimental data of barley.  The Approximate form of diffusion, the Exponential and the Polynomial models have less fitting ability then the Page and Diffusion models for the entire period... Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Post harvest technology Thin-layer; Barley; Re-wetting parameters; Temperature; Relative humidity. Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2539 Development of a photovoltaic driven ventilation system to modified traditional Ethiopian gombisa for on-cobs-maize drying CIGR Journal Garbaba, Chemeda Abedeta. Mycotoxin-producing fungal growth commonly reported from traditional maize storage system in southwestern Ethiopia. Un-safe moisture content at loading and non-climatically controlled nature of gombisa results in mycoflora growth and development on maize in storage system. Therefore, this paper was aimed to develop a photovoltaic driven ventilation system fitted to modified gomibsa for natural air in-bin drying of on-cobs-maize and increase the shelf life of the product. Modified gombisa was constructed from locally available materials for the current experiment. An appropriate fan type and size, humidistat set at >70% and two 20 Wp photovoltaic panels were used for ventilation purpose, fan control and power the fan, respectively. In total 1.76 m3 of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Modified gombisa; Maize in cobs; Temperature; Relative humidity; Ventilation system.. Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4850 Behavior of a portable solar dryer for pineapple fiber Ciência e Agrotecnologia Moya,Róger; Solano,Marco. In Costa Rica, there has been a growing interest to use pineapple fiber from plant, for which current processes need to be improved or new processes need to be developed, with emphasis on drying methods. This work presents the design and evaluation of the behavior of a prototype portable solar dryer in four sites of Costa Rica. The design describes the main parts of the dryer, as well as how they were constructed. The behavior was evaluated according to temperature and relative humidity inside e outside the chamber, and the influence of direct and indirect solar radiation. In order to achieve improved dryer efficiency, a dehumidifier was used to control relative humidity, and a heating system was implemented during the hours of low temperature, low solar... Tipo: Info:eu-repo/semantics/article Palavras-chave: Air drying; Relative humidity; Moisture content; Temperature; Solar radiation. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000600009 Efficiency of oxygen: absorbing sachets in different relative humidities and temperatures Ciência e Agrotecnologia Cruz,Renato Souza; Soares,Nilda de Fátima Ferreira; Andrade,Nélio José de. The main objective of this work was to evaluate the efficiency of oxygen - absorbing sachets at relative humidity of 75%, 80% and 85% and different temperatures, 10±2 ºC and 25±2 ºC. The experiment consisted in determining the O2 absorption under these conditions. A sachet was placed in desiccators with an internal air homogenization system. Aliquots of air were removed at pre-established time intervals and analyzed for oxygen content. The results showed that oxygen absorption by the sachet increased as the relative humidity increased for both temperature. Therefore the oxygen - absorbing sachets were most active under 25±2ºC and 85% relative humidity. At ambient condition (25±2ºC/75%RH) the rate of oxygen absorbed was 50 mL/day and 18,5 mL/day for 10±2ºC.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Active packaging; Oxygen - absorbing; Relative humidity; Temperature. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542007000600029 Temperatura, humedad relativa y luz para almacenamiento de tallos florales de Heliconia psittacorum L. f. cv. Trópica. Colegio de Postgraduados Bañuelos Hernández, Karina Patricia. La especie Heliconia psittacorum L. f. cv. Trópica se ha identificado en los últimos años como una ornamental tropical con gran demanda debido a su belleza y a su vida postcosecha prolongada, que puede superar los 15 días; sin embargo, se desconoce el manejo postcosecha adecuado durante su comercialización. El objetivo de este estudio fue identificar las condiciones adecuadas para el almacenamiento postcosecha de tallos florales de H. psittacorum L. f. cv. Trópica. Se postula que la combinación adecuada de temperatura, H.R. y luz contribuirían a conservar la calidad de las inflorescencias durante la comercialización. Los tallos florales evaluados se obtuvieron de una plantación comercial en Campo Chico, municipio de Iztaczoquitlán, Veracruz. Inicialmente... Palavras-chave: Almacenamiento; Heliconia; Trópica; Humedad relativa; Luz; Temperatura; Light; Relative humidity; Storage; Temperature; Botánica; Maestría. Ano: 2012 URL: http://hdl.handle.net/10521/1745 TECHNOLOGICAL QUALITY OF SOYBEAN OIL OBTAINED FROM STORED GRAIN UNDER CONTROLLED ENVIRONMENTAL CONDITIONS REA Bischoff,Tábata Z.; Coelho,Silvia R. M.; Schoeninger,Vanderleia; Cassol,FLÁVIA D. R.; Prado,Naimara V. Do; Christ,Divair. ABSTRACT: Soybean oil has many important components, but for its maintenance it is essential that there is an appropriate storage, temperature, relative humidity and optimum grain moisture content, because the oxidation reactions occur by improper storage, causing product deterioration. The objective of this study was to evaluate the main changes in the quality of soybean crude oil, from grain storage in temperature of 30°C and different relative humidity (59.6%, 67.0% and 76.0%). Soybean grains were packaged in plastic recipients, where saturated salt solutions were added so the grains reached the desired moisture. The analyses of moisture content, lipid, acidity index, color, antioxidant capacity, specific extension by absorption in the ultraviolet... Tipo: Info:eu-repo/semantics/article Palavras-chave: Extinction specific; Glycine max; Oxidation lipid; Relative humidity. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601145 FITTINGS OF ADSORPTION ISOTHERM MODELS AND THERMODYNAMIC PROPERTIES OF URUNDAY SEEDS REA Isquierdo,Eder P.; Caldeira,Daniela S. A.; Siqueira,Valdiney C.; Martins,Elton A. S.; Quequeto,Wellytton D.. ABSTRACT This study aimed to obtain and evaluate thermodynamic properties and hygroscopic equilibrium isotherms of urunday seeds as a function of air relative humidity and temperature, as well as identify the best-fitted mathematical models for adsorption phenomenon. A static-gravimetric method was used to obtain hygroscopic equilibrium moisture content. Seeds were placed in airtight containers with different saturated saline solutions for relative humidity control. These were then kept in BOD incubator chambers at 10, 20, 30, and 40 °C. Hygroscopic equilibrium moisture content decreased as temperature increased, for the same water activity. The Sigma-Copace model best-fitted seed adsorption data for equilibrium water activity intervals between 0.1129 and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Water activity; Isokinetic; Sorption isotherms; Myracrodruon urundeuva; Relative humidity. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300374 MATHEMATICAL MODELING AND HYSTERESIS OF SORPTION ISOTHERMS FOR PADDY RICE GRAINS REA Zeymer,Juliana S.; Corrêa,Paulo C.; Oliveira,Gabriel H. H.; Baptestini,Fernanda M.; Campos,Renata C.. ABSTRACT Knowledge on sorption isotherms is important for predicting drying and storage processes of a product. A sorption isotherm can be generated from two processes: desorption and adsorption. The lag between these two curves is called hysteresis. Static method was used to obtain the equilibrium moisture content of paddy rice grains, in different temperature (10, 20, 30, 40 and 50 ± 1°C) and relative humidity (between 11 and 76% ± 2%) conditions. Equilibrium moisture content data were correlated with eight mathematical models and. The Chung Pfost model had the best fit to the experimental data. Desorption and adsorption isotherms, represented by the Chung Pfost model, showed a sigmoidal shape, characteristic of type II curve. Equilibrium moisture... Tipo: Info:eu-repo/semantics/article Palavras-chave: Adsorption; Desorption; Hygroscopic equilibrium; Relative humidity; Temperature. Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400524 Manejo do solo para favorecer a manutenção da umidade. Infoteca-e SIGNOR, D.. A manutenção da umidade no solo é de suma importância para o desenvolvimento das culturas, embora seja um grande desafio para o semiárido, principalmente por causa das condições de clima e de solo. A temperatura e a insolação são elevadas, enquanto a umidade relativa do ar é baixa, resultando em altas taxas de evapotranspiração, as quais, associadas ao baixo índice pluviométrico, e à distribuição irregular das chuvas resultam em deficit hídrico na maior parte do ano. Além disso, as características comuns aos solos, em geral arenosos e pouco profundos, são fatores que limitam sua capacidade de armazenamento de água. Assim, estratégias de manejo que possam favorecer à manutenção da água no solo são de grande importância para os cultivos dependentes de chuva... Tipo: Artigo na mídia Palavras-chave: Manutenção da umidade; Pratica de manejo; Solo; Manejo do Solo; Umidade do Solo; Solo Arenoso; Erosão do Solo; Arid soils; Soil management; Relative humidity. Ano: 2017 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1098833 Normal climatológica de 1974 a 2003 da Estação Principal da Embrapa Cerrados. Infoteca-e SILVA, F. A. M. da; EVANGELISTA, B. A.; MALAQUIAS, J. V.. Acompanha um CD-ROM. Tipo: Livros Palavras-chave: Estatísticas de clima; Climatological statistics; Savanna; Cerrado; Clima; Climatologia; Evapotranspiração; Temperatura; Umidade Relativa; Evapotranspiration; Climatology; Relative humidity; Temperature. Ano: 2014 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/999589 Caracterização climática da Amazônia Oriental. Infoteca-e DINIZ, T. D. de A. S.. Tipo: Parte de livro Palavras-chave: Climatologia: Umidade do ar; Brilho solar; Brasil; Precipitation; Precipitação Pluvial; Amazonia; Climatology; Relative humidity; Solar radiation. Ano: 1986 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/394721 Boletim agrometeorológico do ano de 2006 para a estação principal da Embrapa Cerrados em Planaltina, DF. Infoteca-e MULLER, A. G.; SILVA, F. A. M. da; FERREIRA, D. R.; BARBOSA, J. B.. ABSTRACT: The objetive of this paper was subsidized the researches developed in the experimental fields carried out in Embrapa Cerrados and regional meteorological and biometeorological studies. The daily meteorological data of the main agrometeorological station are presented in tables and the monthly averages variations in the year and in the historical series from 1975 to 2005 are presented in figures. This data was utilized to make the characterization of the year in relation to the recent period. Tipo: Folhetos Palavras-chave: Temperatuda; Precipitation; Cerrado; Clima; Meteorologia; Precipitação Pluvial; Umidade Relativa; Climate; Relative humidity; Meteorology; Temperature. Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/572258 Moisture sorption in polyamide 6.6: experimental investigation and comparison to four physical-based models ArchiMer Broudin, Morgane; Le Saux, V.; Le Gac, Pierre-yves; Champy, C.; Robert, G.; Charrier, P.; Marco, Y.. Water sorption in polyamide 6.6 has been characterized for a wide range of temperature (25°C to 80°C) and various water activities using a Dynamic Vapor Sorption testing machine. Complex sorption mechanisms govern the water uptake in the material. The competition between two main temperature dependant mechanisms has been observed: a Henry’s sorption mechanism that mainly governs the sorption curve at low water activities, and a second mechanism at high water activities that could be related to the formation of water clusters. It is observed that the temperature dependency can mainly be attributed to the Henry’s contribution. Four physically based models are then used and identified thanks to the extended experimental database. It is shown that a simple... Tipo: Text Palavras-chave: Polyamide 6.6; Water sorption; Temperature; Relative humidity; Physically-based models. Ano: 2015 URL: https://archimer.ifremer.fr/doc/00252/36371/34911.pdf MAREL Carnot data and metadata from Coriolis Data Centre ArchiMer Lefebvre, Alain. The MAREL (Mesures Automatisées en Réseau pour l’Environnement Littoral) Carnot system developed and implemented by Ifremer (French Research Institute for Exploitation of the sea) in 2004 is a moored buoy equipped with physico-chemical and biological measuring devices working in continuous and autonomous conditions. The system is located in the Boulogne-sur-Mer harbor (eastern English Channel) influenced both by marine coastal and fresh waters. The measuring station is equipped with high performance systems for seawater analysis and near real time data transmission. These system record with a high frequency resolution (20 minutes), the following parameters: estimated sea level, gust wind speed, wind from direction relative true north, horizontal wind... Tipo: Dataset Palavras-chave: MAREL Carnot; Buoy; Observing system; High frequency; Eastern English Channel; Estimated sea level; Gust wind speed; Wind from direction relative true north; Horizontal wind speed; Relative humidity; Light irradiance surface PAR; Sea temperature; Practical salinity; Ph; Dissolved oxygen; Fluorescence; Turbidity; Nitrate + nitrite; Phosphate; Silicate. Ano: 2015 URL: http://dx.doi.org/10.17882/39754 Seed viability of active collections in ex-situ genebanks: an analysis of sorghum germplasm conserved at ICRISAT genebank Open Agri Sastry, D.V.S.S.R.. Palavras-chave: Seed viability; Gene banks; Sorghum; Grain; Germplasm; Regeneration; Relative humidity; Protocols; Seed treatment; Germplasm conservation. Ano: 2008 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3116 A method for germinating perennial Cicer species Open Agri Coyne, C.J. Palavras-chave: Polysaccharides; Chickpeas; Grafting; Pigeonpeas; Germplasm; Relative humidity; Transplanting; Regeneration; Tillage equipment; Developmental stages. Ano: 2005 URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3229 Environmental and physiological factors that affect the efficacy of herbicides that inhibit the enzyme protoporphyrinogen oxidase: a literature review Planta Daninha Matzenbacher,F.O.; Vidal,R.A.; Merotto Jr.,A; Trezzi,M.M.. Herbicides that inhibit the enzyme protoporphyrinogen oxidase (PROTOX) are usually effective to control dicotyledonous weeds and their agronomic efficacy is affected by environmental and physiological factors. The objective of this review is to summarize the knowledge of those factors available in the scientific literature in the last decade. Environmental factors that influence PROTOX inhibitors include temperature, irradiance and relative humidity. The most relevant physiological factors are the activity of enzymes that can detoxify herbicides and also of enzymes that mitigate the effects of oxidative stress in plants. The study also suggests some possible management strategies that could optimize the activity of PROTOX-inhibiting herbicides. Tipo: Info:eu-repo/semantics/article Palavras-chave: Temperature; Light; Relative humidity; Enzymes. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000200024 Registros recuperados: 31 Primeira ... 1 2 ... Última

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