SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

chavoshgoli, esmaeil khalil; abdollahpour, shamsollah; abdi, reza; babaie, aziz; ,.

Abstract: The physical and aerodynamic characteristics of seeds can strongly influence their movements in the agricultural machine as well as in the air. The knowledge of the physical characteristics of particles is essential for the constructors and operators of agricultural machines. In this research some physical and aerodynamic properties of two Iranian edible seeds of sunflower cultivars (Badami and Doursefid) were studied in the moisture content range from 7% to 30% wet basis (w.b.). With decrease in moisture content the true density of Badami and Doursefid decreased from 561.02 to 457.29 kg/m3 and 509.35 to 440.50 kg/m3, respectively. For studying aerodynamic properties (terminal velocity and drag coefficient) the ratio of mass (g) to projected...

Analogy of physicochemical attributes of two grape seeds cultivars

Palavras-chave: Sunflower seed; Physical properties; Aerodynamic properties.

Ano: 2014

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2662

Ciencia e Investigación Agraria

Ahmadi,Seyed Mohammad; Siahsar,Barat Ali.

In this study, a range of physicochemical properties (dimensions, kernel volume, mass unit, bulk and true densities, porosity, terminal velocity, static friction coefficient against different surfaces, oil content and fatty acids composition) of the Bojnordi and Fakhri cultivars of grape seeds were studied. Fatty acid composition for both cultivars of grape seeds consisted of palmitic, stearic, oleic, linoleic and linolenic acid. The values for palmitic, stearic, oleic, linoleic and linolenic acid for the Bojnordi cultivar were 9.56, 4.37, 22.87, 62.85 and 0.33% and for the Fakhri cultivar were 9.22, 4.33, 19.75, 66.40 and 0.28%, respectively. All physical properties of the grape seed cultivars were significantly affacted by the moisture content in the...

Tipo: Journal article

Palavras-chave: Chemical properties; Fatty acid; Grape seed; Physical properties.

Ano: 2011

URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200014

ASSESMENT OF PALM KERNEL SHELL AS A COMPOSITE AGGREGATE IN CONCRETE

Oti, Okechukwu Peter; Nwaigwe, Kevin Nnanye; Okereke, Ngozi A. A..

This manuscript presents a report on the physical properties of palm kernel shell used here as a coarse aggregate and their effect on the strength properties of palm kernel shell concrete.Laboratory research was carried out to observe the effects of replacing crushed granite with palm kernel shell on the compressive strength and density of palm kernel shell concrete. Mix design of 1:2:4 and a water-cement ratio of 0.6 were used to produce concrete specimen cubes of size 150mm3.A total of 60 cubes were made and wholly submerged in water to cure for 28days at intervals of 7days i.e. 7, 14, 21 and 28 days after which their densities and compressive strengths were determined. Granite was replaced with palm kernel shell in the mix at 25% interval...

Calibração da técnica de Time Domain Reflectometry (TRD) para avaliação da umidade do solo, em um Latossolo Amarelo, textura muito argilosa, com diferentes valores de densidade aparente do solo - avaliação no campo.

Palavras-chave: Agricultural Engineering; Construction Palm kernel shells; Coarse aggregate; Curing; Physical properties; Compressive strength.

Ano: 2017

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4036

Infoteca-e

TEIXEIRA, W. G.; FACCIN, O. P.; AZEVEDO, C. P. de; HUWE, B.; SCHROTH, G..

Avaliação de umidade volumetrica do solo pela técnica de time Domain Reflectometry (TDR) para Latossolo Amarelo (Xanthic ferralsol - FAO) textura muito argilosa, com diferentes valores de p. Foram determinados os coeficientes de determinacao ajustada (R2) e o erro padrao da media. Realizou-se um ajuste por regressao multipla para P e E, selecionando-se as variaveis que contribuiam significativamente para o modelo por procedimentos de selecao stepwise. Como a variacao dos valores de p esta diretamente relacionada ao uso do solo (especie presente e o manejo praticado), foram observadas importantes diferencas entre as P das areas cultivadas e as da floresta primaria. Os valores reduzidos de P proxima as plantas de pupunha (Bactris gasipaes H.B.K.) em relacao...

Tipo: Capítulo em livro técnico (INFOTECA-E)

Palavras-chave: Propriedade fisica; Fluxo; Brasil; Amazonas; Tropical rain forest; Moisture; Fluxes; Água; Bactris Gasipaes; Cupuaçu; Floresta Tropical Úmida; Kudzu; Pueraria Phaseoloides; Pupunha; Solo; Theobroma Grandiflorum; Umidade; Uso da Terra; Density; Land use; Physical properties; Soil; Water.

Ano: 1997

URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667398

Cambios en la composición de pequeños pescados pelágicos salados en salmuera durante su producción y almacenamiento

OceanDocs

Bostock, T.; Camba, N..

Los cambios físicos, químicos y organolépticos en macarela (Scomber japonicus) y sardina (Sardinops sagax, Etrumeus teres) saladas durante el procesamiento y subsecuente almacenamiento en salmuera son descritos. Es evaluada además la calidad del producto desde el punto de vista microbiológico, así como también los efectos que se observan en el producto final cuando el artesano ecuatoriano usa materia prima de baja calidad. Los principales cambios que ocurren (enrojecimiento de la carne, desarrollo de olores a frutas, el aumento de las bases volátiles totales y de proteínas solubles y posiblemente histamina parecen estar relacionadas más con la autólisis que con el desarrollo microbiológico). La maduración o ”deterioración” (en términos del paladar...

Tipo: Journal Contribution

Palavras-chave: Processing fishery products; Storage effects; Chemical composition; Physical properties; Organoleptic properties; Microbiological analysis; Cured products; Chemical composition; Physical properties; Organoleptic properties; Microbiological analysis; Http://aims.fao.org/aos/agrovoc/c_1794; Http://aims.fao.org/aos/agrovoc/c_13328; Http://aims.fao.org/aos/agrovoc/c_5399; Http://aims.fao.org/aos/agrovoc/c_25302.

Ano: 1986

URL: http://hdl.handle.net/1834/3153

Capability of grass in recovery of a degraded area after coal mining

Agrociencia

Stumpf,Lizete; Pauletto,Eloy A.; Costa de-Castro,Rafaela; Spinelli-Pinto,Luiz F.; Fontana-Fernandes,Flavia; Stumpf da-Silva,Tiago; Vaz-Ambus,Jordano; Furtado-Garcia,Gabriel; Rodrigues de-Lima,Claudia L.; Nunes,Márcio R..

Surface coal mining causes an intense topographic and hydrologic change in the area with suppression of local vegetation, degrading the environment. One main problem presented by the rehabilitated soil refers to physical disruption of the soil, which delays the regrowth of plant species in the mining area. The objective of this study was to evaluate the influence of four grass species in the retrieval of the rehabilitated soil's physical properties at a recovered coal mine area in Candiota, Rio Grande do Sul State, southern Brazil. With the data an ANOVA was performed and treatments means were compared using Tukey test (p ≤0.05). The treatments were: T1-Hemarthria altissima; T2-Paspalum notatum; T3-Cynodon dactylon; T4-Urochloa brizantha; a...

URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952014000500002

Palavras-chave: Hemarthria altissima; Paspalum notatum; Cynodon dactylon; Urochloa brizantha; Rehabilitated soils; Physical properties.

Ano: 2014

Características físicas da semente: dano mecânico não aparente e peso de 1000 sementes.

KRZYZANOWSKI, F. C.; FRANÇA-NETO, J. B.; LORINI, I..

bitstream/item/185235/1/p-61-68.pdf

Tipo: Capítulo em livro científico (ALICE)

Palavras-chave: Soja; Dano Mecânico; Análise Física; Soybeans; Mechanical damage; Physical properties.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1098336

Características físicas do grão: dano mecânico não aparente, dano mecânico pelo teste de tetrazólio e grãos partidos.

KRZYZANOWSKI, F. C.; FRANÇA-NETO, J. B.; LORINI, I..

bitstream/item/186323/1/p-127-140.pdf

Tipo: Capítulo em livro científico (ALICE)

Palavras-chave: Dano Mecânico; Teste de Tetrazólio; Soja; Análise Física; Soybeans; Mechanical damage; Physical properties.

Ano: 2018

URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1099601

Ciclagem de nutrientes em uma plantacao de jacaranda-da-baia (Dalbergia nigra fr. allem.) consorciado com desmodio (Desmodium ovalifolium wall).

Condiciones físico químicas en el entorno de la Isla de La Plata (Agosto/2001)

CORREA, J.C.; CORREA, A.F.F..

Com o objetivo de estudar a ciclagem de nutrientes oito anos apos o plantio de jacaranda-da-baia (Dalbergia nigra Fr. Allem.) em consorcio com o desmodio (Desmodium ovalifolium Wall) em um Latossolo Amarelo muito argiloso, na regiao de Manaus, AM, foram coletadas amostras de solo, liteira do jacaranda e desmodio e biomassa do desmodio. Os resultados mostraram que apesar de a liteira do jacaranda com desmodio ter aumentado como o espacamento do jacaranda, as percentagens de carbono, os teores de nutrientes (exceto P e Ca) e as propriedades fisicas do solo nao deferiram significativamente entre os tratamentos. Os desmodio consorciado com o jacaranda foi beneficiado pela ciclagem do P aplicado na cova de plantio do jacaranda; entretanto, os teores de Ca no...

Tipo: Artigo em periódico indexado (ALICE)

Palavras-chave: Solo; Amazonas; Liteira; Propriedade fisica; Plantio consorciado; Soil; Amazon region; Litter; Physical properties; Consorciated planting.

Ano: 1996

URL: http://www.alice.cnptia.embrapa.br/handle/doc/104105

OceanDocs

Burgos, L.; Gamboa, M.C..

Con el objeto de estudiar las funciones de esforzamiento y mecanismos que regulan la surgencia, a fin de desarrollar la capacidad de predicción de sus efectos sobre las pesquerías de la zona.

Tipo: Journal Contribution

Palavras-chave: Upwelling; Nutrients (mineral); Cruises; Chemical properties; Physical properties; Water properties; Fishery resources; Chemical properties; Physical properties; Fishery resources; Http://aims.fao.org/aos/agrovoc/c_9754; Http://aims.fao.org/aos/agrovoc/c_13328; Http://aims.fao.org/aos/agrovoc/c_2942.

Ano: 2002

URL: http://hdl.handle.net/1834/2273

Contração volumétrica e forma dos frutos de mamona durante a secagem - doi: 10.4025/actasciagron.v33i1.4629

Agronomy

Goneli, André Luís Duarte; Universidade Federal de Viçosa; Corrêa, Paulo Cesar; Universidade Federal de Viçosa; Magalhães, Felipe Elia de almeida; Universidade Federal de Viçosa; Baptestini, Fernanda Machado; Universidade Federal de Viçosa.

O objetivo do presente trabalho foi avaliar o efeito da variação do teor de água na contração volumétrica, dimensões características e forma dos frutos de mamona durante a secagem. Foram utilizados frutos colhidos com teor de água de 2,50 (b.s.), secos à temperatura de 40°C até o teor final de 0,11 (b.s.). O tamanho dos frutos foi determinado por meio da variação do volume e a forma foi analisada pela esfericidade e circularidade. A contração volumétrica dos frutos foi determinada pela relação entre o volume em cada teor de água e o volume inicial. Com base nos resultados, concluiu-se que a forma dos frutos de mamona é influenciada pela redução do teor de água, promovendo redução da esfericidade e circularidade. As dimensões características...

Palavras-chave: 5.03.03.00-7 Ricinus communis L.; Propriedades físicas; Contração volumétrica Engenharia de Processamento de Produtos Agrícolas Ricinus communis L.; Physical properties; Shrinkage.

Ano: 2011

URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/4629

Crescimento de mudas de Eucalyptus camaldulensis em substratos à base de casca de arroz carbonizada.

Determinação experimental da condutividade e difusividade térmica de grãos em regime permanente

KRATZ, D.; WENDLING, I..

Com base na importância do substrato na produção de mudas florestais, objetivou-se, com este trabalho, avaliar a viabilidade técnica de 13 substratos, preparados com misturas de substrato comercial à base de casca de pinus e vermiculita (SC), casca de arroz carbonizada com diferentes granulometrias [maior que 2 mm (CAC1), CAC com granulometria entre 1 ? 2 mm (CAC2), CAC com granulometria entre 0,5 ? 1 mm (CAC3), CAC com granulometria menor que 0,5 mm (CAC4)], fibra de coco (FC) e vermiculita média (VM), na produção de mudas de Eucalyptus camaldulensis, e a correlação de suas propriedades físicas e químicas com seu crescimento. Foram utilizados tubetes de 55 cm³. As mudas permaneceram 60 dias em estufa de vidro e 30 dias a pleno sol. Foram avaliadas a...

Tipo: Artigo em periódico indexado (ALICE)

Palavras-chave: Espécie exótica; Substrato renovável; Característica física; Característica química; Renewable substrates; Physical properties; Chemical properties; Eucalipto; Eucalyptus camaldulensis.

Ano: 2016

URL: http://www.alice.cnptia.embrapa.br/handle/doc/1062265

Ciênc. Tecnol. Aliment.

PARK,Kil Jin; ALONSO,Luís Felipe Toro; NUNES,Alexandre Sznelwar.

Foram determinadas experimentalmente em regime permanente a difusividade e a condutividade térmica de materiais biológicos. O equipamento com termopares de Cobre-Constantan dispostos radialmente no interior do cilindro conectados a uma unidade registradora de dados acoplados a um microcomputador fornece a leitura das temperaturas dos termopares. Os valores obtidos de difusividade (1,12x10-4 m2/s) e condutividade térmica (0,138W/moC) para o trigo (Triticum aestivum) e os valores de difusividade (1,67x10-4 m2/s) e condutividade térmica (0,122W/moC) para o arroz em casca (Orysa sativa)concordam com os valores encontrados nos ASAE STANDARTS [1], demonstrando a funcionalidade do equipamento.

Determination of Physical and Aerodynamic Characteristics of African Olive (Canarium Schweinfurthii) Nut

Palavras-chave: Conductivity; Diffusivity; Physical properties.

Ano: 1999

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611999000200020

Obi, Okey Francis; Ijere, Chimuanya Emeka; Okechukwu, Michael Emeka.

This study investigated the physical and aerodynamic properties of African olive (Canarium schweinfurthii) nuts. The nut mass frequency was identified and three fractions of the nut were defined to determine their properties. Generally, it was observed that the physical and aerodynamic characteristics of the nut were significantly influenced by the unit mass. Comparison of means revealed that the mean values of the nut physical and aerodynamic properties were significantly different between fractions at p<0.05 except for the true density. The static angle of repose appeared higher than the dynamic angle of repose for all the nut fractions. The coefficient of static friction of the nut fractions on different material surfaces was highest on plywood and...

Determination of physical properties of apricot fruit and proper box height for storing and handling the apricot fruit

Palavras-chave: Agricultural and Bioresources Engineering Canarium schweinfurthii nut; Physical properties; Aerodynamics properties; Models.

Ano: 2018

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4820

Hazbavi, Isa.

In avoiding damage to fruit species, the permissible falling height and permissible static pressure are of great importance. The former is important in planning harvesting and handling operations, the latter in selecting the height of transport containers. Fruits are generally transported in containers. The static and dynamic forces which then act on the fruit will cause damage if they exceed given value. The static force may be calculated from the weight of the fruit column being transported while the dynamic load is a consequence of vibration caused by transport. The permitted static load for a given fruit may be determined experimentally. The aim of this study was design of a suitable height based on the measured properties using Ross and Isaacs’s...

Determination of some physical and mechanical properties of Barkat variety of broad bean

Palavras-chave: Apricot fruit; Static force; Height box; Physical properties.

Ano: 2013

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2669

Azadbakht, Mohsen; Ghajarjazi, Ehsan; Abdigaol, Farhad; Amiri, Emad.

In this research the effect of moisture at three levels (57, 67, and 77 %) on the physical properties of the Barkat bean variety including, including dimensions, geometric mean diameter, volume, sphericity index and the surface area was determined. And the influence of different moisture content levels (67,57 and 77%), in two loading orientation (longitudinal and transverse) and three loading speed (8,6 and 10 mm min-1) on the mechanical properties of the maximum deformation, rupture force, rupture energy, toughness and the power to break the broad bean was investigated. It was observed in the mechanical properties that moisture changes and loading speed were affective at 1% on rupture force, rupture energy, and toughness. Loading orientation was affective...

Determine some engineering properties of snake melon (cucumis melo var. flexuosus)

Palavras-chave: Broad bean; Physical properties; Mechanical properties..

Ano: 2015

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3339

Jahanbakhshi, Ahmad.

The physical and mechanical properties of agricultural products have an effective role in determining the quality of the products, reducing the potential damage caused by transportation and eventually designing the equipment used in the processing of the products. In this study, some physical and mechanical properties of snake melon were measured under standard conditions. Physical properties included length, width, thickness; mean diameter (geometric and arithmetic), sphericity, surface area, aspect ratio, mass, volume and density. The mechanical properties of the samples and their lengths were measured under the conditions of pressure (bruise), bending (break) and cutting of the snake melons in halves using a Zwick/Roell Instron testing machine based on...

Determining some physical properties of Azivash (Corchorus Olitorious L.) seed

Palavras-chave: Snake melon; Physical properties; Mechanical properties..

Ano: 2018

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4305

Azadbakht, Mohsen; Pourbagher, Roghayeh.

Used Azivash seed in the research has been provided in summer 2013. The samples were cleaned and separated manually and residuals and broken seeds were taken apart it and healthy seed was provided for testing. Then diameter, area of image, and round coefficient, were calculated using image processing application. Mass of 1000 seeds, mass density, real density and porosity percentage, static friction coefficient, repose angle in two modes of fullness and emptiness were measured. Liquid replacement method has been used to calculate density and volume of the seeds. The results showed that a positive relationship between physical properties of Azivash seed including geometric properties (diameter, volume), gravity properties (weight of 1000 seeds, real density...

Drying and quality features of selected maize varieties dried in commercial processing complexes

Palavras-chave: Azivash seed; Physical properties; Moisture content.

Ano: 2015

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3349

Jony, Akhtaruzzaman.

The drying status and quality aspects in terms of physical, nutritional, functional properties and microbial status of three common maize varieties (900M gold, Pioneer 92 and Kavri) dried in different drying complexes in Dinajpur district of Bangladesh are presented in this paper. Total drying varied from18-20 h for drying of freshly harvested maize varieties in the complexes where sun drying method was used. The overall calculation reveled that drying cost in different mills ranged from US$12.12 to US$14.75 per ton of fresh maize (@1US$ equals Tk.80). The dimensions of the maize varieties as length, width and thickness were found to be ranged from 12.62±0.34 to 14.54±0.32, 10.60±0.35 to 10.24±0.21, 6.38±0.28 to 6.74±0.28 mm, respectively. The 900M gold...

Efeito de sistemas de manejo sobre algumas propriedades físicas de um podzólico vermelho-amarelo câmbico fase terraço.

Palavras-chave: Food Engineering and Technology Maize drying; Drying cost; Physical properties; Nutritional quality; Moisture content; Microbial load..

Ano: 2017

URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3984