Consulta: subjectFacets:"Relative humidity"
Registros recuperados: 31
Data/hora: 09/06/2024 11:28:30

CARACTERIZAÇÃO MICROMETEOROLÓGICA DE AMBIENTES PROTEGIDOS PARA A PRODUÇÃO VEGETAL
Provedor de dados: 196
Autores: 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

Temperatura, humedad relativa y luz para almacenamiento de tallos florales de Heliconia psittacorum L. f. cv. Trópica.
Provedor de dados: 32
Autores: 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

MATHEMATICAL MODELING AND HYSTERESIS OF SORPTION ISOTHERMS FOR PADDY RICE GRAINS
Provedor de dados: 70
Autores: 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

FITTINGS OF ADSORPTION ISOTHERM MODELS AND THERMODYNAMIC PROPERTIES OF URUNDAY SEEDS
Provedor de dados: 70
Autores: 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

TECHNOLOGICAL QUALITY OF SOYBEAN OIL OBTAINED FROM STORED GRAIN UNDER CONTROLLED ENVIRONMENTAL CONDITIONS
Provedor de dados: 70
Autores: 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

Caracterização climática da Amazônia Oriental.
Provedor de dados: 14
Autores: DINIZ, T. D. de A. S.
bitstream/item/57908/1/Doc40-p3-13.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
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

Manejo do solo para favorecer a manutenção da umidade.
Provedor de dados: 14
Autores: DEON, D. S.
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 de divulgação na mídia (INFOTECA-E)
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

Boletim agrometeorológico do ano de 2006 para a estação principal da Embrapa Cerrados em Planaltina, DF.
Provedor de dados: 14
Autores: 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: Documentos (INFOTECA-E)
Palavras-chave: Temperatuda; Precipitation.; Clima; Cerrado; Meteorologia; Precipitação Pluvial; Umidade Relativa.; Climate; Relative humidity; Meteorology; Temperature.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/572258

Normal climatológica de 1974 a 2003 da Estação Principal da Embrapa Cerrados.
Provedor de dados: 14
Autores: SILVA, F. A. M. da; EVANGELISTA, B. A.; MALAQUIAS, J. V.
bitstream/item/111651/1/doc-321.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Estatísticas de clima; Climatological statistics; Savanna.; Cerrado; Clima; Climatologia; Evapotranspiração; Umidade Relativa.; Temperatura; Climatology; Evapotranspiration; Relative humidity; Temperature.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/999589

Moisture sorption in polyamide 6.6: experimental investigation and comparison to four physical-based models
Provedor de dados: 5
Autores: 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
Provedor de dados: 5
Autores: 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
Provedor de dados: 30
Autores: 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
Provedor de dados: 30
Autores: 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
Provedor de dados: 87
Autores: 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

Meeting embryonic requirements of broilers throughout incubation: a review
Provedor de dados: 89
Autores: Molenaar,R; Reijrink,IAM; Meijerhof,R; Van den Brand,H.
During incubation of chicken embryos, environmental conditions, such as temperature, relative humidity, and CO2 concentration, must be controlled to meet embryonic requirements that change during the different phases of embryonic development. In the current review, the effects of embryo temperature, egg weight loss, and CO2 concentration on hatchability, hatchling quality, and subsequent performance are discussed from an embryonic point of view. In addition, new insights related to the incubation process are described. Several studies have shown that a constant eggshell temperature (EST) of 37.5 to 38.0°C throughout incubation results in the highest hatchability, hatchling quality, and subsequent performance. Egg weight loss must be between 6.5 and 14.0%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Broiler embryos; CO2 concentration; Incubation; Relative humidity; Temperature.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000300001

Turkey Wattle Temperature Response to Distinct Environmental Factors
Provedor de dados: 89
Autores: Mendes,AS; Moura,DJ; Morello,GM; Carvalho,TMR; Sikorski,RR.
ABSTRACT Rearing environmental conditions are important for turkey production, because this bird is particularly sensitive to heat stress. This study aimed at measuring the wattle temperature response of turkeys of three different ages (61, 96, and 131 days old) exposed to different combinations of dry bulb temperature, relative humidity, and wind speed ranges, as an indication of their physiological responses. The experiment was conducted with 42 male birds housed in a controlled environment chamber and exposed to different combinations of two air speed (WS) ranges (WS1 = 0.3-0.6 ms-1, considered low, and WS2 = 1.2-1.6 ms-1, considered high), dry bulb temperature (DBT) between 22 and 34 °C, and relative humidity (RH) between 40 to 90 %. The statistical...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wind speed; Thermal comfort; Relative humidity; Environmental exposure.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400439

Development and water requirements of cowpea under climate change conditions in the Brazilian semi-arid region
Provedor de dados: 91
Autores: Cavalcante Junior,Edmilson G.; Medeiros,José F. de; Espínola Sobrinho,José; Figueirêdo,Vladimir B.; Costa,João P. N. da; Santos,Wesley de O.
ABSTRACT This study aimed to determine the impacts that climate change may cause on the development and evapotranspiration of cowpea, in semi-arid climate region of Northeast Brazil. The study was conducted in the municipalities of Apodi, Ipanguaçu and Mossoró, in the state of Rio Grande do Norte. In order to evaluate the influence of climate change on crop water consumption, changes in air temperature and relative humidity were simulated using the PRECIS climate model. Two scenarios of emissions were evaluated based on the report of the Intergovernmental Panel on Climate Change: a pessimistic named A2 and an optimistic B2. The duration of the crop cycle showed an average reduction of 14 and 23 days for the optimistic and pessimistic scenarios,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Temperature; Relative humidity; Evapotranspiration.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900783

Desorption isotherms of Lactuca sativa seeds
Provedor de dados: 91
Autores: Zeymer,Juliana S.; Corrêa,Paulo C.; Oliveira,Gabriel H. H. de; Baptestini,Fernanda M.; Freitas,Rita C. P.
ABSTRACT Lactuca sativa seeds are highly sensitive to climate conditions; thus, they should be stored securely to maintain their qualitative and quantitative characteristics. Studies on hygroscopicity aim to decrease possible changes in agricultural products under specific environmental conditions. Accordingly, this study aims to develop an appropriate mathematical model to represent the desorption isotherms of Lactuca sativa seeds. The hygroscopic equilibrium was achieved using a static-gravimetric method at temperatures of 10, 20, 30, 40 and 50 °C and water activity in the range 0.11-0.96. Six mathematical models were fitted to the experimental data of the equilibrium moisture content of Lactuca sativa seeds. The best model was chosen based on the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Mathematical modeling; Hygroscopic equilibrium; Relative humidity; Temperature.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000800568

Phenology of Campomanesia adamantium (Cambess.) O. Berg in Brazilian Cerrado
Provedor de dados: 94
Autores: Leão-Araújo,Érica Fernandes; Souza,Eli Regina Barboza de; Naves,Ronaldo Veloso; Peixoto,Nei.
Abstract Campomanesia adamantium is a fruit tree native to Cerrado and important for human consumption as food, herbal medicine and even in the beverage industry. The aim of this study was to evaluate the vegetative and reproductive phenology of C. adamantium plants in the region of Ipameri-GO, the synchronization of phenophases and the correlation with climatic data. Rainfall, relative humidity, average, maximum and minimum temperature, as well as sprouting, flowering and fruiting data of C. adamantium plants were collected between September and December of 2016 and 2017. Graphs were plotted for climatological data and phenological phases. Phenophase synchrony analysis and correlation of these phases with the climate of the region were performed....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Flowering; Fructification; Gabiroba; Phenophases; Rainfall; Relative humidity; Savannah; Sprouting; Temperature.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000200203

CORRELATION AMONG DAMAGES CAUSED BY YELLOW BEETLE, CLIMATOLOGICAL ELEMENTS AND PRODUCTION OF GUAVA ACCESSES GROWN IN ORGANIC SYSTEM
Provedor de dados: 94
Autores: GALLI,JULIANA ALTAFIN; MICHELOTTO,MARCOS DONISETI; FISCHER,IVAN HERMAN; SOARES,MARIA BEATRIZ BERNARDES; MARTINS,ANTÔNIO LUCIO MELLO.
ABSTRACT The objective of this research was evaluate the damage caused by the yellow beetle on 85 guava accessions and correlations of the damage with the climatological elements and the production of fruit in an orchard of guava conducted in organic system. Ten leaves by access were analyzed containing the injury of insect attack. Each leaf had its foliar area measured by leaf area meter and, after obtaining the total area, the leaf was covered with duct tape, and measure again. The averages were compared by Scott-Knott test at 5% probability. The 15 accessions with highest average damage had the data submitted to the correlation with the minimum and maximum temperature, precipitation and relative humidity. The production was obtained by the number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Psidium guajava; Costalimaita ferruginea; Temperature; Precipitation; Relative humidity.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452017000300402

Estimating leaf wetness duration over turfgrass, and in a 'Niagara Rosada' vineyard, in a subtropical environment
Provedor de dados: 63
Autores: Lulu,Jorge; Sentelhas,Paulo Cesar; Pedro Júnior,Mário José; Pezzopane,José Ricardo Macedo; Blain,Gabriel Constantino.
Leaf wetness duration (LWD) is a key parameter in agrometeorology because it is related to plant disease occurrence. As LWD is seldomly measured in a standard weather station it must be estimated to run warning systems for schedule chemical disease control. The objective of the present study was to estimate LWD over turfgrass considering different models with data from a standard weather station, and to evaluate the correlation between estimated LWD over turfgrass and LWD measured in a 'Niagara Rosada' vineyard, cultivated in a hedgerow training system, in Jundiaí, São Paulo State, Brazil. The wetness sensors inside the vineyard were located at the top of the plants, deployed at an inclination angle of 45º and oriented southwest, with three replications....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis labrusca; LWD estimate; Relative humidity; Dew point temperature.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700004

Spatial and temporal variability of leaf wetness duration in the State of São Paulo, Brazil
Provedor de dados: 63
Autores: Hamada,Emília; Ghini,Raquel; Fernandes,Jeferson Lobato; Pedro Júnior,Mário José; Rossi,Paulo.
One of the main factors influencing the occurrence of plant diseases is the leaf wetness duration (LWD). However, this climatic parameter is not generally and systematically recorded at meteorological stations, and the alternative to obtain an estimate for LWD is the use of mathematical models. The objective of this study was to estimate LWD for the State of São Paulo, on the basis of the number of hours with relative humidity equal to or higher than 90%, and also plot them on a map with help of the Geographical Information System (GIS) tool. Using daily relative humidity data from ten meteorological stations of the State, for six years, adjustment equations were obtained for different LWD periods (hours day-1) (R² from 0.58 to 0.81) and of number of days...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plant diseases; Relative humidity; Geographical Information System; Regression equation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700006

Climatic risk of grape downy mildew (Plasmopara viticola) for the State of São Paulo, Brazil
Provedor de dados: 63
Autores: Hamada,Emília; Ghini,Raquel; Rossi,Paulo; Pedro Júnior,Mário José; Fernandes,Jeferson Lobato.
Viticulture in Brazil has been growing in importance in recent years. In the State of São Paulo, a significant percentage of the production is basically destined to in natura consumption and, more recently, much effort has been made by institutions to revitalize the viticulture in the State. Among fungal diseases, the downy mildew (Plasmopara viticola) is one of the main diseases affecting this crop in Brazil, with extreme damage effects on its production. The objective of this study was to estimate the incidence of the downy mildew on grape under the climatic conditions of the State of São Paulo, based on a mathematical model and using Geographical Information System - GIS tools. The study considered the months from September to April, a period in which...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis spp.; Geographical Information System; Temperature; Relative humidity; Leaf wetness duration.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000700010

ผลของการบ่มข้าวเปลือกที่อุณหภูมิและความชื้นสัมพัทธ์สูงต่อความหนืดและโครงสร้างโมเลกุลขององค์ประกอบในแป้งข้าวเหนียวและแป้งข้าวเจ้า
Provedor de dados: 106
Autores: Parichat Hongsprabhas; Natdanai Fafaungwithayakul; Teerarat Likitwattanasade.
This study investigated the influences of paddy aging at 60 C and 70% relative humidity for 5 days on pasting properties of rice flours and molecular structures of major constituents in rice grain. The rice cultivars investigated included waxy rice Sanpah-Tawng 1 (SPT1), which contained 1.3% amylose and 8.3% protein. Non-waxy rice paddies; namely Pathum Thani 1 (PTT1), which had 14.1% amylose and 6.7% protein, as well as and Leuang Pratew 123 (LPT123), which contained 28.6% amylose and 9.6% protein, were also investigated. Paddy aging significantly changed the RVA pasting characteristics of rice flour pastes from all cultivars investigated (p&lt;0.05). All aged rice flour pastes had higher final viscosity than that of new rice flour paste. Fourier...
Tipo: Collection
Palavras-chave: Paddy aging; Molecular structure; Protien; Rice flour; High temperature; Relative humidity; Viscosity; ข้าวเปลือก; การบ่ม; โครงสร้างโมเลกุล; โปรตีน; แป้งข้าว; อุณหภูมิ; ความชื้นสัมพัทธ์; ความหนืด.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5327

ผลของการเปลี่ยนแปลงสภาพภูมิอากาศต่อการระบาดของโรคข้าว จังหวัดเชียงรายและพะเยา
Provedor de dados: 106
Autores: Nootjarin Jungkhun; Piyapa Srikhom; Konsiri Srinil; Taraporn Yuneyong; Kanteera Kanta.
Main objective of this study was to evaluate the relationship between climate changes and rice disease s epidemics in Chiangrai and Phayao provinces. The study was conducted at Chiangrai Rice Research Center during the year 2011-2013 by monthly broadcasting two popular rice varieties in the area; Phitsanulok 2 and Sanpatong 1. The experiment was carried out in Split plot in RCB Design with 3 replicates having month as main plot and variety as sub-plot. Disease incidence and severity were evaluated at 3 growth stages i.e. 20, 50 and 90 days after sowing. Concurrently, Disease incidence and severity were recorded for rice diseases in the farmers’ fields of Chiangrai and Phayao provinces having infected at 10 rai and above. Disease data showed that both rice...
Tipo: PhysicalObject
Palavras-chave: Climate change; Temperature; Relative humidity; Rainfall; Rice disease; Epidemic; Global warming; Rice pathogen; Rice; Rice production; Phitsanulok 2 variety; Sanpatong 1 variety; Plant diseases survey; Pathogens; Chiangrai province; Phayao province; ข้าว; พันธุ์พิษณุโลก 2; พันธุ์สันป่าตอง 1; การผลิตข้าว; การสำรวจโรคพืช; โรคข้าว; เชื้อสาเหตุของโรค; การระบาดของโรค; ภาวะโลกร้อน; การเปลี่ยนแปลงสภาพภูมิอากาศ; อุณหภูมิ; ความชื้นสัมพัทธ์; ปริมาณน้ำฝน; การประเมินความเสียหาย; จ.เชียงราย; จ.พะเยา.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5695

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
Provedor de dados: 2
Autores: 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 &gt; 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 &gt; 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

Comparison of five commonly used thin-layer moisture transfer models in fitting the re-wetting data of barley
Provedor de dados: 111
Autores: 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
Provedor de dados: 111
Autores: 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 &gt;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

Storage performance of naturally ventilated structure  for onion bulbs
Provedor de dados: 111
Autores: 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

Behavior of a portable solar dryer for pineapple fiber
Provedor de dados: 64
Autores: 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
Provedor de dados: 64
Autores: 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