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Alcohol production from sweet potato (Ipomoea batatas (L.) Lam.) genotypes in fermentative medium Acta Agron. (Palmira)
Cantos-Lopes,Amanda; Vilela-de Resende,Juliano Tadeu; Machado,José; Perez-Guerra,Edson; Vilela-Resende,Nathalia.
Abstract Ethanol is one of the most promising fuels in Brazil, but its production is centralized in sugarcane cultivation, and is currently in search for other sources alcohol producing biomass to replace sugarcane monoculture. The aim of this study was to study fermentation process variables such as fermentation time (72 and 96 hours), addition of nutrients (with and without addition) and yeasts (dry and fresh organic yeast), employed in ethanol production from two sweet potato (Ipomoea batatas (L.) Lam.) genotypes: UGA 05 and UGA 77. Alcohol evaluation content in °GL was performed in a completely randomized design according to two factorial schemes (22 and 23), and results obtained were analyzed using Design Expert® software version 8. Results of the...
Tipo: Journal article Palavras-chave: Biofuel; Ethanol production; Fermentation; Saccharification; Starch; Water content.
Ano: 2018 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000200231
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Avaliação hídrica de um latossolo vermelho submetido a sistemas de manejo. Repositório Alice
PEREIRA, F. S.; ANDRIOLI, I.; MARTINS, A. L. S..
O conteúdo de água em sistemas de preparo do solo são essenciais para avaliar a sustentabilidade agrícola. O objetivo deste estudo foi avaliar os efeitos do teor de água em um Latossolo Vermelho distrófi co sob diferentes sistemas de manejo: 1) Crotalária (Crotalaria juncea), em sistema de semeadura direta (SDC); 2) Milheto (Pennisetum americanum sin. Tiphoydes), em sistema de semeadura direta (SDM); 3) Lablabe (Dolechus lablab), em sistema de semeadura direta (SDL); 4) Semeadura convencional após uma gradagem aradora e duas niveladoras (SSC) e 5) pousio. A propriedade física do solo foi avaliada nas camadas 0,5-0,10 m e 0,15-0,20 m . A curva de retenção de água foi mais influenciada pelo SDM na camada 0,5-0,10 m.
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Curva de retenção de água no solo; Sustentabilidade; Plantio direto; Latossolo vermelho; Oxisols; Tillage; Water content.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1002763
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Dehydration of infrared ginger slices: heat and mass transfer coefficient and modeling Ciência e Agrotecnologia
Corrêa,Paulo Cesar; Baptestini,Fernanda Machado; Zeymer,Juliana Soares; Araujo,Marcos Eduardo Viana de; Freitas,Rita Cristina Pereira de; Leite,Rildo Araujo.
ABSTRACT Dehydration of plant products extends its shelf life and reduces its mass and volume, which increases transport and storage efficiency and adds value to food. However, it is an intensive process in energy and time, making necessary the search for more efficient technologies, Thus, this study aimed to investigate the infrared ginger dehydration process by approaching the constant period of dehydration to the theory of mass and heat transfer process to the wet bulb thermometer and the decreasing period of dehydration to liquid diffusion theory. We submitted 5.0 mm thickness and 2.0 cm diameter slices to a dryer with infrared radiation at 50, 60, 70, 80, 90 and 100 °C until constant mass. Heat and mass transfer coefficients, and effective diffusion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Modified Henderson and Pabis; Radiation; Water content; Zingiber officinale.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100400
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Desenvolvimento e calibração de uma guia de onda para TDR. Repositório Alice
ANDRADE, C. L. T.; OR, D.; COSTA, E.L.; COUTO, L.; ALBUQUERQUE, P. E. P..
A medicao da umidade do solo e crucial para pesquisa e manejo de irrigacao. Entre os metodos mais recentes de determinacao de umidade esta o da TDR ("time domain reflectometry") que se baseia na correlacao entre a propriedade dieletrica do solo e a sua umidade. A obtencao do perfil de umidade do solo requer a utilizaco de um grande numero de guias de onda, cujo custo ainda e elevado. Por outro lado, as curvas de calibracao relacionando umidade com constante dieletrica do solo foram desenvolvidas para solos de paises temperados. Os objetivos desse trabalho foram construir uma guia de onda com materiais facilmente encontrados no mercado nacional e calibra-la para solos tropicais. As curvas de calibracao para areia quartzosa e latossolo vermelho escuro sao...
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Solo; Umidade; Irrigacao; Instrumentacao; Soil; Water content; Irrigation; Instrumentation.
Ano: 2001 URL: http://www.alice.cnptia.embrapa.br/handle/doc/485175
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Development of a Resonant Microwave Sensor for Sediment Density Characterization ArchiMer
Mansour, Rassoul; Rioual, S.; Lescop, B.; Talbot, P.; Abboud, M.; Farah, W.; Tanné, G..
In this study, a sensor based on the development of a planar antenna immersed in sediments dedicated to water content monitoring in this type of material is proposed and experimentally validated. It is produced by a conventional Printed Circuit Board (PCB) manufacturing process on a double-sided metalized FR4 substrate. The sensitivity of the sensor is ensured by the variation of the real part of the complex dielectric permittivity of sediments with water content at around 1 GHz. As shown, in this frequency range, electrode polarization and Maxwell–Wagner polarization e ects become negligible, leading to only a bulk water polarization sensitivity. The sensor operates in the reflection mode by monitoring the variation of the resonant frequency as a function...
Tipo: Text Palavras-chave: Resonant sensor; Water content; Dielectric characterization; Microwave; Antenna; Sediments.
Ano: 2020 URL: https://archimer.ifremer.fr/doc/00610/72167/70939.pdf
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Different harvest times and physiological quality of coriander seeds AGRIAMBI
Alkimim,Emilly R.; David,Andréia M. S. de S.; Sousa,Tiago V.; Rodrigues,Cleiton G.; Amaro,Hugo T. R..
ABSTRACT The season of harvest is one of the most important factors influencing seed quality. This study evaluated the effect of different harvesting times on the physiological quality of Coriandrum sativum L. seeds, cv. Palmeira. The experimental design was completely randomized, with six treatments (harvest times) and four replications. The experiment was conducted during the months of April to October 2010. The first moment to harvest seeds was carried out 15 days after full bloom, when approximately 50% of plants were in flowering phase. Other harvests (22, 29, 36, 43 and, 50 days after bloom) were carried out at 7 days intervals until the seeds reached 16.0% of moisture, which occurred in the 6th harvest. Immediately after each harvest, the seeds were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coriandrum sativum L.; Germination; Vigor; Water content.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000200133
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Distribución espacial del amonio en fiordos y canales comprendidos entre Puerto Montt y Laguna San Rafael en período de primavera OceanDocs
Prado-Fiedler, R..
An oceanographic expedition was carried out between October 18th and November 15th 1995 in the inlets region and fjords located between Puerto Montt (41° 20’S and San Rafael Lagoon (46° 40’ S) in Southern Chile. The main purpose of the present work is to characterise the spatial distribution of ammonium and its concentration range in the studied region during spring onset. Water samples were collected from a total of 101 oceanographic stations of the expedition Cimar-Fiordo 1. The main part of the water body showed concentrations lower than 1 µmol/L. The higher ammonium concentrations were found in the continental fjords, specially in the area situated south of the narrows of Meninea island, where subsurface maximums greater than 2 µmol/L were found. The...
Tipo: Journal Contribution Palavras-chave: Fjords; Water properties; Ammonia; Water content; Channels; Water analysis; Water sampling; Surface layers; Core layers (water); Sea water; Fjords; Water content; Ammonia; Water analysis; Sea water; Http://aims.fao.org/aos/agrovoc/c_16314; Http://aims.fao.org/aos/agrovoc/c_15852; Http://aims.fao.org/aos/agrovoc/c_349; Http://aims.fao.org/aos/agrovoc/c_16064; Http://aims.fao.org/aos/agrovoc/c_6903.
Ano: 2000 URL: http://hdl.handle.net/1834/1576
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Electrical conductivity and soybean seedling emergence Scientia Agricola
Colete,Julio Cesar Fachini; Vieira,Roberval Daiton; Dutra,Alek Sandro.
Evaluation of soybean [Glycine max (L.) Merrill] seeds vigor and its relation with field seedling emergence can provide secure indicatives of seed physiological potential. The present research studied the relationship between the electrical conductivity test and the seedling emergence of soybean in field and laboratory. The field experiment was sown in November 26th, December 3td and 10th, 2000. Laboratory tests were performed using levels of water potential in the substrate (soil) -0.03; -0.2; -0.4; and -0.6 MPa. Fourteen seed lots, seven of 'Embrapa 48' and seven of 'BRS 133' soybean cultivars were used. Laboratory tests comprised seed water content determination, before and after the accelerated aging; germination and vigor tests (accelerated aging and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Glycine max; Seed analysis; Water content; Vigor; Water potential.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000400006
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Estudio del crecimiento del maíz bajo condiciones de temporal mediante la captación de agua de lluvia Colegio de Postgraduados
Torres Suárez, Sandra Luz.
El trabajo de investigación fue conducido en el campo experimental del campus Montecillo del Colegio de Postgraduados. Cuyo objetivo principal fue observar si existe afectación en el contenido de agua presente en el suelo, debida a una conformación diferente de surcos y la colocación de contras a lo largo de los mismos. La variedad de semilla utilizada fue San Josecito, sembrada el día 2 de junio de 2006. El diseño experimental fue el de Bloques Completos con Tratamientos Aleatorizados, con 4 repeticiones, disponiéndose de una superficie total de 1500 m2. Los tratamientos probados consistieron en: Arada pacial con contras a cada 3 m (Trat A), surco tipo Anaya (inclinado) con contras a cada 3 m (Trat B), Surco normal con contras a cada 3 m (Trat C)...
Tipo: Tesis Palavras-chave: Maíz; Microcuencas; Termporal; Contenido de humedad; Maestría; Hidrociencias; Corn; Micro-basins; Rainfed; Water content.
Ano: 2008 URL: http://hdl.handle.net/10521/1520
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Etude preliminaire des equilibres de distribution de l'eau et des ions au cours de l'ovogenese de Solea solea ArchiMer
Gallis, J; Lemenn, F; Lebrun, A; Nunez, R.
During oogenesis of Solea solea L., gonadal changes in water, Na super(+) and K super(+) ions seem to be related to yolk protein incorporation by the oocyte. The decrease in oocyte water accumulation, associated with an increase in pericellular water accumluation and a decrease in K super(+) concentration occurs when vitellogenin enters the oocyte. Na super(+) concentration decreases in the oocyte at the end of the exogenous vitellogenesis when the first stages of the oocyte maturation take place. Water accumulation in the pericellular space during vitellogenesis allows the rapid transfer of water from this compartment into the oocyte during the terminal phase of maturation. However the total amount of gonadal water remains stable.
Tipo: Text Palavras-chave: Solea solea; Soleidae; Pisces; Hydration; Water content; Ion accumulation; Sexual maturity; Ovaries; Oogenesis; Solea; Maturation ovocytaire; Ovogenèse; Eau; Ions.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1231.pdf
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Exploratory Repositório Alice
FIGUEIREDO, M. A. de; COELHO, S. V. B.; ROSA, S. D. V. F. da; VILELA, A. L.; SILVA, L. C..
Cryopreservation is a viable option for conservation of coffee germplasm. However, for this technique to be completely successful, it is of fundamental importance to carry out studies that ensure maintenance of cell integrity before and after immersion in liquid nitrogen (LN). Therefore, the aim in this study was to investigate the water content, cooling rate, and final temperature most suitable for cryopreservation of Coffea arabica L. seeds. The seeds were dried by silica gel to water contents of 5, 10, 15, 20, 30 and 40 % wb, subjected to slow cooling treatments at speeds of -1, -3 and -5 °C min.-1 to final temperatures of -40, -50 and -60 °C and then directly immersed in LN. After storage, seeds were rewarmed at 40 °C for two minutes. The survival rate...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Coffee; Slow cooling; Liquid nitrogen; Sílica gel; Teor de água; Resfriamento lento; Nitrogênio líquido; Café; Silica gel; Water content.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1081992
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Field Performance of a Winged Scarifier as a Function of Soil Compaction and Water Content Chilean J. Agric. Res.
Cholaky,Carmen; Cisneros,José M; Balbuena,Roberto.
Initial soil conditions, operational aspects, and tool shape affect the efficiency of soil decompaction. The objective of this study was to evaluate the performance of a winged scarifier as a function of soil compaction and edaphic water content. The experiment was carried out in a typical Hapludoll. Treatments considered two soil compaction levels: high (HC) and low compaction (LC); and three soil water contents: wet (WS), humid (HS), and dry (DS) with 9, 14, and 19% gravimetric water content, respectively. A split-plot randomized block design was applied. Tractive effort, disturbed area, tillage depth, specific resistance, and power were evaluated. Results showed that tractive effort was 17% greater in HC than LC, and in both cases HS was greater than WS...
Tipo: Journal article Palavras-chave: Agricultural engineering; Winged scarifier; Bulk density; Water content; Compaction.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000100016
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Geoelectric method applied in correlation between physical characteristics and electrical properties of the soil. Repositório Alice
SILVA FILHO, A. M.; SILVA, C. L. B.; OLIVEIRA, M. A. A.; PIRES, T. G.; ALVES, A. J.; CALIXTO, W. P.; NARCISO, M. G..
This paper presents the study of the relationship between electrical properties and physical characteristics of the soil. Measures of apparent electrical resistivity of the soil were made for different types of soil, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. Development of a correlation surface is proposed in order to identify granulometry of the soil from moisture and compaction measurements. For the study of spatial variability, two areas were chosen to allow the change of moisture content and compaction in order to verify the measurement capacity of apparent electrical resistivity of the soil as methodology to identify change in soil dynamics....
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Apparent electrical resistivity; Geoelectric prospecting; Water content; Soil compaction; Soil properties.
Ano: 2017 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1078731
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Nitrogen and phosphorus species of Lake Burullus Water (Egypt) OceanDocs
Okbah, M.A..
Water samples collected from Lake Burullus were analyzed to investigate temporal and spatial variations of phosphorus and nitrogen species during the period from January to October 2003. The concentrations of dissolved inorganic nitrogen (DIN), dissolved organic nitrogen (DON), particulate nitrogen (PN) and total nitrogen (TN) were in the ranges of 4.10-107.51mole l-1 ; 7.43-170.10mole l-1; 9.33-209.4mole l-1 and 51.40-259.0 mole l-1 respectively. DIN, DON and PN species represent 19%, 34% and 47% of the total nitrogen content, respectively. Significant variations for the concentrations of the phosphorus forms have been found in this study. Concentrations of reactive phosphate (PO4), dissolved organic phosphorus (DOP), particulate phosphorus (PP) and...
Tipo: Journal Contribution Palavras-chave: Water samples; Water content; Nitrogen; Nutrients; Phosphorus; Http://aims.fao.org/aos/agrovoc/c_5192; Http://aims.fao.org/aos/agrovoc/c_5274; Http://aims.fao.org/aos/agrovoc/c_5804.
Ano: 2005 URL: http://hdl.handle.net/1834/1263
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Physical characterization of Arabica ground coffee with different roasting degrees Anais da ABC (AABC)
NAKILCIOĞLU-TAŞ,EMINE; ÖTLEŞ,SEMIH.
Abstract: Roasting is a determinative operation on the final quality of coffee. Roasting process causes physical, chemical and sensory changes on coffee. In this study roasting degree effect on physical properties of Arabica fine ground coffee was examined. The bulk properties, particle property, reconstitution properties, moisture content, water activities and color properties were investigated in different roasting degrees of coffee. The results showed that the physical characteristics of coffee samples were influenced by the degree of roast. To have longer shelf life, lower cost and better physical attributes of Arabica fine ground coffee, the roasting process should be kept at a lower degree. At the same time the requests and expectations of customer...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Arabica coffee; Bulk density; Flowability; Roasting degree; Water content.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000300901
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Physical properties of safflower grains. Part II: Volumetric shrinkage AGRIAMBI
Martins,Elton A. S.; Goneli,André L. D.; Gonçalves,Alexandre A.; Hartmann Filho,Cesar P.; Rech,Jerusa; Oba,Guilherme C..
ABSTRACT Agricultural products usually have their size reduced during the drying process. The quantification of the reduction in the dimensions is important for the development and optimization of equipment for the post-harvest of the product. The aim of the present study was to evaluate the effect of the variation in the moisture content during drying on the volumetric shrinkage of safflower grains and their respective axes. Safflower grains were harvested with an initial moisture content of approximately 0.445 decimal d.b. (dry basis) and subjected to drying in an oven with forced air circulation at 40 °C, until the grains reached a final moisture content of 0.073 ± 0.008 decimal d.b. During drying, the contraction of the axes, unit volumetric shrinkage...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carthamus tinctorius L.; Volume; Water content.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500350
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Physical quality of grains subjected to moistening and drying processes for marketing AGRIAMBI
Coradi,Paulo C.; Sousa,Alisson H. S. de; Camilo,Lucas J.; Lima,Roney E.; Milane,Lélia V.; Lemes,Ângelo F. C..
ABSTRACT The aim was to evaluate the physical quality of conventional and transgenic corn grains, through drying and wetting processes for marketing. The experimental design was completely randomized in a factorial scheme (7 x 3 x 2), corresponding to seven drying times (0, 20, 40, 60, 80, 100 and 120 min), three temperatures of the drying air (80, 100 and 120 °C) and two hybrids of corn (conventional AG 1051 and transgenic Herculex@ 30S31H). Grain drying was held in convection oven with forced air ventilation while the wetting was done in a B.O.D chamber. The water movement in the grain, the volume and the electrical conductivity were evaluated periodically. The results showed that the transgenic corn grain reduced the negative effects of drying and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: AG 1051; Herculex@ 30S31H; Water content; Temperature.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000900847
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Physiological quality of cowpea seeds for different periods of storage Rev. Ciênc. Agron.
Smiderle,Oscar José; Souza,Aline das Graças; Alves,José Maria Arcanjo; Barbosa,Cylles Zara dos Reis.
ABSTRACT The aim of this study was to evaluate physiological quality in the seeds of four cowpea cultivars during nine months of storage. The cowpea cultivars used were BRS Mazagão, UFRR Grão Verde, Pretinho Precoce 1 and BRS Guariba, produced intercropped with cassava in the experimental area of the Centre for Agrarian Science of the Federal University of Roraima, in Boa Vista. After harvest, the seeds were dried, hand cleaned, placed in PET bottles and stored for nine months at a temperature of 23 ºC and a relative humidity of 60% at the Seed Analysis Laboratory of Embrapa Roraima. Data analysis was carried out in a completely randomised design, in a 4 x 4 factorial scheme with eight replications. The physiological quality of the seeds was evaluated at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vigna unguiculata; Water content; Test for vigour.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000500817
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Quantification of the least limiting water range in an oxisol using two methodological strategies Rev. Bras. Ciênc. Solo
Moreira,Wagner Henrique; Tormena,Cássio Antônio; Betioli Junior,Edner; Figueiredo,Getulio Coutinho; Silva,Álvaro Pires da; Giarola,Neyde Fabíola Balarezo.
The least limiting water range (LLWR) has been used as an indicator of soil physical quality as it represents, in a single parameter, the soil physical properties directly linked to plant growth, with the exception of temperature. The usual procedure for obtaining the LLWR involves determination of the water retention curve (WRC) and the soil resistance to penetration curve (SRC) in soil samples with undisturbed structure in the laboratory. Determination of the WRC and SRC using field measurements (in situ ) is preferable, but requires appropriate instrumentation. The objective of this study was to determine the LLWR from the data collected for determination of WRC and SRC in situ using portable electronic instruments, and to compare those determinations...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Water content; Instrumentation; Critical bulk density; Soil physical quality; Matric potential.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000600012
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Relationship between gibberellic acid and growth parameters in developing seed and pod of pigeon pea Braz. J. Plant Physiol.
Chudasama,Rita S.; Thaker,Vrinda S..
Changes in endogenous gibberellic acid (GA) levels were determined in developing seeds and pods of pigeon pea (Cajanus cajan). Antibodies against GA3 were raised in rabbits and indirect ELISA developed to estimate GA level. Two varieties, black seeded variety (V1) and B.D.N2 (V2), were selected on the basis of their seed index value. The pod length and number of seeds per pod were significantly different for the two varieties. Dry weight, water content (WC), rate of water accumulation, rate of dry matter accumulation (DMA), and GA content in pod and seed were all larger in V1 than in V2. In both varieties, higher GA content was observed during cell elongation and DMA phases, respective to their varietal differences in growth traits. Relationships between...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cajanus cajan; Dry matter accumulation; Endogenous gibberellic acid; Seed development; Water content.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202007000100005
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