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Aerodynamic and some physical properties of sunflower seeds as affected by moisture content CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sunflower seed; Physical properties; Aerodynamic properties.
Ano: 2014 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2662
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Analogy of physicochemical attributes of two grape seeds cultivars 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
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ASSESMENT OF PALM KERNEL SHELL AS A COMPOSITE AGGREGATE IN CONCRETE CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article 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
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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. 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
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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
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Carbon losses and soil property changes in ferralic Nitisols from Cuba under different coverages Scientia Agricola
Hernández-Jiménez,Alberto; Vargas-Blandino,Dania; Bojórquez-Serrano,José Irán; García-Paredes,Juan Diego; Madueño-Molina,Alberto; Morales-Díaz,Marisol.
ABSTRACT The transformation of primary forestlands into lands under cultivation exerts an impact on the physical and chemical properties of the soils, leading to loss of carbon from the soil. The aims of this study were (1) to estimate the impact of different land use on organic carbon stock (OC-stock) and (2) to determine the clay percentage, the dispersion factor, and bulk density with regard to soil management. Thirty soil profiles were sampled as follows: four under primary forests with 80-100 years (old growth); two under secondary wood forests with 45-50 years; eight under secondary young forests with 15-25 years; four under pasture land with 15-20 years; and 12 under continuous cultivation for > 50 years. We determined the changes in OC-stock in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Degradation; Carbon reserves; Physical properties; Tropical soils.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000400311
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Characterization of corn landraces planted grown in the campos gerais region (Paraná, Brazil) for industrial utilization BABT
Pinto,Alessandra Teixeira Barbosa; Pereira,Joyce; Oliveira,Tatiana Roselena de; Prestes,Rosilene Aparecida; Mattielo,Rodrigo Rodrigues; Demiate,Ivo Mottin.
This work has the objective of characterizing twenty corn landraces grown in the Campos Gerais region (Paraná State) in relation to its chemical composition (moisture, ash, protein, ether extract, dietary fiber and starch) and physical properties (weight of 1000 grains, real density, flotation index, granulometry and color). In addition, also the lab scale processing of the kernels from the varieties was carried out for producing starch; starch purity was evaluated by measuring its protein contamination. Amylose contents and viscoamylograph profile were also evaluated. The results showed that the evaluated landraces have differences in chemical composition as well as in pericarp/endosperm/germ proportions and consequently it should have different...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Maize landraces; Chemical composition; Starch; Physical properties; Rapid viscoanalyzer.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700003
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Condiciones físico químicas en el entorno de la Isla de La Plata (Agosto/2001) 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
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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
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Determinação experimental da condutividade e difusividade térmica de grãos em regime permanente 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.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conductivity; Diffusivity; Physical properties.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20611999000200020
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Determination of Physical and Aerodynamic Characteristics of African Olive (Canarium Schweinfurthii) Nut CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article 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
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Determination of physical properties of apricot fruit and proper box height for storing and handling the apricot fruit CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Apricot fruit; Static force; Height box; Physical properties.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2669
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Determination of some physical and mechanical properties of Barkat variety of broad bean CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broad bean; Physical properties; Mechanical properties..
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3339
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Determine some engineering properties of snake melon (cucumis melo var. flexuosus) CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Snake melon; Physical properties; Mechanical properties..
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4305
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Determining some physical properties of Azivash (Corchorus Olitorious L.) seed CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Azivash seed; Physical properties; Moisture content.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3349
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Drying and quality features of selected maize varieties dried in commercial processing complexes CIGR Journal
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...
Tipo: Info:eu-repo/semantics/article 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
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Effect of adding flours from marolo fruit (Annona crassiflora Mart) and jerivá fruit (Syagrus romanzoffiana Cham Glassm) on the physicals and sensory characteristics of food bars Ciênc. Tecnol. Aliment.
SILVA,Edson Pablo da; SIQUEIRA,Heloisa Helena; DAMIANI,Clarissa; VILAS BOAS,Eduardo Valério de Barros.
Abstract The marolo (Annona crassiflora Mart.) and jerivá (Syagrus romanzoffiana Cham Glassm) fruits grow in the Cerrado biome, and have important sensory and nutritional characteristics. These fruits are eaten fresh or processed and embedded in ice cream, candy, juices, and liquors. However, their use is very limited and is localized exclusively to their native region. The aim of this study was to evaluate the use of these fruits in food consumer products to improve the nutritional patterns of consumers and extend knowledge thereof. To do this, different levels (0%, 5%, 10%, 15%, and 20%) of flour derived from the marolo and jerivá fruits were incorporated into food bars, which were then characterized in terms of their physical of the texture (TPA),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Flour; Savannah fruits; Porosity; Physical properties.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000100140
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Effect of moisture content on engineering properties of oats (Avena sativa L.) CIGR Journal
BRAR, HARPREET SINGH; SIDHU, GAGANDEEP KAUR; SINGH, AMARJEET.
The present study was undertaken to investigate the effect of moisture content on engineering properties of OL-09 variety of oat grains. Different engineering properties such as length, width, thickness, geometric mean diameter, volume, surface area, sphericity, bulk density, true density, porosity, angle of repose and angle of internal and external friction were determined in a moisture range of 8%-14% (wet basis, w.b) using standard methods. The physical properties such as length, width, thickness, geometric mean diameter, volume, surface area and sphericity significantly (P <0.05) increased from 15.01 to 16.19 mm, 3.06 to 3.60 mm, 2.78 to 3.11 mm, 5.03 to 5.65 mm, 37.00 to 52.98 mm3, 76.03 to 94.80 mm2 and 33.58% to 35.01%, respectively as the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oats; Engineering properties; Moisture content; Physical properties; Frictional properties.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3488
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Effect of seed maturation stages on physical properties and antioxidant activity in flaxseed ( Linum usitatissimum L.) Ciênc. Tecnol. Aliment.
HERCHI,Wahid; BAHASHWAN,Saleh; TRABELSI,Hajer; SEBEI,Khaled; BOUKHCHINA,Sadok.
Abstract The changes in flaxseed constituents at different stages of maturity are reported. The physical properties and antioxidant activity of flaxseed oil during flaxseed development have been evaluated. Continuous decrease in total polyphenol content during flaxseed development. All the results showed no significant differences between HPLC-MS and TLC for quantitative determination of phospholipids classes. The fatty acid compositions of individual phospholipids were also reported. The antioxidant activity of oilseed was assessed by means of 2, 2-diphenyl-1-picryl-hydrazyl (DPPH) radical scavenging assay. The test demonstrated that the antioxidant activity of the flaxseed oil was found to be harvesting time-dependant.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Physical properties; Antioxidant activity; Total polyphenol content; Flaxseed oil; HPLC-MS; Maturation.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000400598
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EFFECT OF SOIL PYSICAL PROPERTIS ON PERFORMANCE OF AGRICULTURAL FIELD MACHINERIES IN THE TROPICAL REGION OF NIGERIA CIGR Journal
Oduma, Okechukwu.
Abstract: A research was conducted at the demonstration farms of Michael Okpara University of Agriculture, Umudike, Abia State and Veterinary School, Ezzangbo, Ebnonyi State in 2017; to assess the effect of soil physical properties on the performance of some selected agricultural field machineries in the tropical region of Nigeria. Results of the effect of the soil textural class/ type on implement performances revealed that the average efficiency of the implements was highest on sandy-clay soil with average efficiency of 87.35% and the least was loamy-sandy soil that gave an average efficiency of 86.21%. It was observable from the results that the highest average moisture content of 17.7% was recorded for all the \soils before tillage; but after tillage;...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural and Bioresources Engineering Keywords: Field machineries; Performances; Physical properties; Soil; Tropical region..
Ano: 2018 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4332
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