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| Registros recuperados: 91 | |
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| Jaganathan,Ganesh K.; Song,Danping; Liu,Wei; Han,Yingying; Liu,Baolin. |
| ABSTRACT Seeds of Nelumbo nucifera do not imbibe water, and thus have physical dormancy (PY). However, a proportion of seeds are permeable to water, and so we hypothesized that variation in moisture content is a reason for the development of both permeable and impermeable seeds. The permeable proportion of seeds present in a lot collected from Suzhou, China, was separated using an imbibition test. The permeable proportion had an average moisture content of 15.6 %, compared with 8.5 % for impermeable seeds. Drying permeable seeds above silica gel to 10 % and 8 % f. wb., resulted in 77 and 100 % impermeable seeds, respectively, compared with no impermeable seeds at 15 % moisture content. Dried to 10 % moisture content, and incubated above water in an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dormancy reversal; Maternal environment; Maturation drying; Moisture content; Physical dormancy. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062017000400639 |
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| Resende, Osvaldo; CEFETRV; Arcanjo, Rena Vieira; UNIR; Siqueira, Valdiney Cambuy; UNIR; Rodrigues, Silvestre; UNIR. |
| Objetivou-se com o presente trabalho estimar e avaliar as curvas de secagem do café da espécie Coffea Canephora e ajustar diferentes modelos matemáticos aos valores experimentais de quatro clones. Foram utilizados frutos de café dos clones: Cpafro 194, Cpafro 193, Cpafro 167 e Cpafro 180, colhidos com os teores de água iniciais de 1,20; 1,32; 1,51 e 1,46 (decimal b.s.), respectivamente. A secagem prosseguiu em terreiro de concreto até que o produto atingisse o teor de água de, aproximadamente, 0,10 (decimal b.s.). Aos dados experimentais foram ajustados dez modelos matemáticos, citados na literatura específica e utilizados para representação do processo de secagem de produtos agrícolas. Pelos resultados obtidos e com base em parâmetros estatísticos,... |
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Palavras-chave: 5.01.00.00-9 Agronomia café; Clones; Modelagem matemática; Teor de água Pré-Processamento de Produtos Agrícolas coffee berry; Clones; Mathematical model; Moisture content. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/588 |
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| Siqueira, Valdiney Cambuy; Universidade Federal de Lavras; Resende, Osvaldo; Instituto Federal de Educação, Ciência e Tecnologia Goiano - Campus Rio Verde; Chaves, Tarcísio Honório; Instituto Federal de Educação, Ciência e Tecnologia Goiano - Campus Rio Verde. |
| The objective of this study was to determine the geometric diameter of volumetric shrinkage in Jatropha seeds subjected to drying under six air conditions and to fit different mathematical models to the experimental values. Seeds with an approximate initial moisture content of 0.61 kgw kgdm-1 (kilogram of water per kilogram of dry matter) were dried in a convection oven at temperatures of 36, 45, 60, 75, 90, and 105°C until they reached a moisture content of 0.11 ± 0.006 kgw kgdm-1. The experimental data were fitted to five mathematical models used to represent volumetric shrinkage in agricultural products. The models were analyzed using the coefficient of determination, chi-square, mean relative error, mean estimated error, and residual distribution.... |
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Palavras-chave: Mathematical models; Moisture content; Polynomial model. |
| Ano: 2012 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/14402 |
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| SEDARA, ADEWALE MOSES. |
| The aim of this research was to study the effects of soil moisture content and tyre inflation pressure on motion resistance of narrow wheels using a locally developed single wheel test rig. A single wheel Test Rig facility was developed at FUTA. Two narrow wheels of 90/10-10 in width, IRC MB90 tire were used as the test wheels on clay soil. Two inflation pressures of 274 kPa and 380 kPa and 15, 20, 30, and 40 kg load was examined at two different soil moisture conditions (8% and 10% moisture content). R2 value for test wheel 1 with inflation pressure of 270 kPa at 8% moisture content was 0.9974 while that of inflation pressure of 380 kPa at 10% moisture content was 0.9952; also for test wheel two (2) R2 value was 0.9977 and 0.9914 at moisture content of 8%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Motion resistance; Vertical load; Inflation pressure; Moisture content; Wheel; Test rig; Soil bin.. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6379 |
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| Roy, Dipika; Saha, Chayan Kumer; Alam, Md. Monjurul; Alam, Md. Ashraful; Sarker, Tumpa Rani. |
| Proper and timely drying is needed for producing quality paddy seed. Open sun drying is often produced seed with foreign materials. Solar dryer produced by science for society (S4S), India might be suitable for country like Bangladesh. Therefore, an attempt was taken to evaluate S4S seed dryer at the Workshop, Department of Farm Power and Machinery, Bangladesh Agricultural University, Mymensingh. In this experiment, the spatial and temporal distribution of temperature and moisture in S4S solar grain dryer was investigated and the seed quality was also evaluated. The dryer performance was evaluated with six trials in Boro season from May 10 to June 6, 2017 and with three trials in Aman season from November 7 to 11, 2017. Paddy seed samples were also dried... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solar drying; Temperature; Moisture content; Drying loss; Germination. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5957 |
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| Jaliliantabar, Farzad; Lorestani, Ali Nejat; Jaliliantabar, Farzad Jaliliantabar. |
| In this study, some important physical and mechanical properties of the hawthorn and the effect of moisture on them were investigated. The effect of moisture at two levels (64.01% and 70.1%, w.b.) on the geometric dimensions (length, width, thickness, arithmetic mean diameter, geometric mean diameter, degree of sphericity, surface area, projected area, criteria projected area, mass, volume and the apparent), true density, porosity, coefficient of static friction and coefficient of rolling on three levels (wood, glass and galvanized) and mechanical properties obtained by impact testing machine using a randomized factorial design was evaluated by software SPSS18. Results indicate that moisture has an effect on the physical properties of the hawthorn. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hawthorn; Physical properties; Maximum force at impact; Mechanical properties; Moisture content. |
| Ano: 2013 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2676 |
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| Shukla, Prabhakar; Sudhakar, Anjali; Sharma, Anjali. |
| Legumes are prime source of plant proteins, calories and other nutrients. Extrusion cooking of legumes increases the digestibility of legume protein. Extrusion technology has been applied to generate analogues of foods made from animal products, as well as snacks using blends of various plant raw materials e.g. oil seeds [soybeans, peanut with a cereal flour]. Present work was under taken for producing extruded product from pigeon pea. The legumes viz. pigeon pea and Bengal gram were cleaned and ground to required particle size by multipurpose grinder mill to pass through sieve ASTM No. 20. The moisture content of sample was adjusted to 14% moisture level (w.b.). Before extrusion, the feed was allowed to come to ambient temperature and then remixed, after... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extrusion; Protein; Moisture content; Density; Dimension. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6861 |
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| Mirzabe, Amir Hossein; Taheri, Mojtaba; Asaei, Habil; Kianmehr, Mohammad Hossein. |
| To design the planting, separating, threshing, sizing and packing machines for agricultural products, physical and mechanical properties of the products should be known. In this paper, some physical properties of red radish seeds were studied. Dimensional parameters, when moisture content equals to 5.65% based on dry bases (d.b), were measured using image processing technique. Effects of moisture content on gravimetrical and frictional properties of the seeds, including mass of single seed, 1000-unit seed, bulk density, true density, porosity, static coefficient of friction on various surfaces, and angle of repose based on pouring, Hele-Shaw, empting and filling methods were studied. Effects of volume of the container (150, 350, 550 and 750 mL) and height... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Image processing technique; Dimensional properties; Modeling; Moisture content; Gravimetrical properties; Frictional properties. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3406 |
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| AVIARA, NDUBISI A.; Iyilade, Idowu J.; Oyeniyi, Samuel K.; Aremu, Ademola K.. |
| The use of inappropriate equipment to crack bush mango nut and obtain the kernel has adversely affected the efficiency of its processing operations. The manual method, which involves cracking the nut with stone or pestle and mortar, is not only slow and risky, but also wasteful. In order to develop appropriate processing equipment for the nut, knowledge of its mechanical properties is necessary. This study was undertaken to determine some strength properties of the nut at different moisture contents under lateral and longitudinal loading orientations, using Universal Testing Machine (UTM). In the moisture range of 7.52% - 20.6% (d.b) under both lateral and longitudinal loading orientations, results of tests showed that all the strength properties (bioyield... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural Engineering; Post harvest Technology; Crop Processing Mechanical properties; Bush mango nut; Irvingia gabonensis; Moisture content; Loading orientation; Universal Testing Machine (UTM). |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5092 |
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| Ikegwu, Onyekachi John. |
| The thermal conductivity of agricultural seeds has been used as engineering parameter in the design of process and machines for drying, storing, aeration and refrigeration. The thermal conductivity of white and red pigeon pea seeds with changes in moisture content and temperature was investigated using the transient heat transfer method. The thermal conductivity of white and red pigeon pea seeds increased from 0.2387 to 0.3497 Wm-1k-1 , and 0.2375 to 0.3425 Wm-1k-1 respectively, as the moisture content increased from 5 to 35% w.b. Thermal conductivity of white and red pigeon pea seeds increased significantly (p<0.05) from 0.2643 to 0.3543 Wm-1k-1 , and from 0.2711 to 0.3311 Wm-1k-1 respectively, as temperature increased from 10 to 70 ℃. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Thermal conductivity; Pigeon pea seeds; Moisture content; Temperature; Activation energy. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6065 |
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| Asoiro, Felix Uzochukwu; Simeon, Meshack Imologie; Azuka, Chinenye Eberechukwu. |
| The effects of floral location on the physicochemical and thermal parameters of honey samples from Enugu North senatorial zone were evaluated. Floral location had significant effects (P 0.05) on viscosity, electrical conductivity, sugar content, free acidity, ach content, moisture content, density, pH, colour, thermal heat conductivity and thermal heat diffusivity except, F/G ratio and specific heat capacity. Honeys from Igbo-Eze South were more viscose than the rest of the honey samples from other floral locations, with a mean viscosity value at 25 oC (15.58cSt) higher than that at 60 oC (12.63cSt). The electrical conductivity, ash content, moisture content and density ranged between 226.5 - 211.45 µS cm-1, 0.06 - 0.57%, 16.59 – 22.55% and 0.82 – 1.25 g... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Moisture content; Fructose; Free acidity; Density; Thermal heat diffusivity; Viscosity; Electrical conductivity. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7343 |
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| khanahmadzadeh, Abdolvahed; Goli, Hadi; Ghamari, Salah. |
| Measuring physical properties of crops is necessary for optimal harvesting, cleaning, threshing, sorting, drying, and milling operations. Despite an extensive literature review, there is no information about the physical properties of the wild safflower seed. In this study the physical properties of the wild safflower seed have been investigated as a function of moisture content at four levels (5.4%, 9.4% (initial), 13.4%, and 17.4% d.b.). The average length (mm), width (mm), thickness (mm), arithmetic mean diameter (mm), geometric mean diameter (mm), sphericity (%), volume (cm³), seed surface area (cm²), terminal velocity (m/s), bulk density (gr/cm³), actual density (gr/cm³), and porosity (%) at initial moisture content were 6.418, 3.499, 3.388, 4.435,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Physical properties; Wild safflower seed; Moisture content. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5977 |
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| Dauda, Solomon Musa; Aliyu, Mohammed; Balami, Ayuba Audu; Mohammed, Ibrahim Shaba; Abdulfatai, Yusuf. |
| Some physical and mechanical properties of Luffa (L. cylindrica) seeds were investigated at five different moisture content levels of 6%, 12%, 18%, 24% and 30%. The physical properties which included geometric mean diameters (minor, major, intermediate), sphericity, weight, bulk density and coefficient of static friction were determined. The mean values of the physical properties of the seeds were determined as major diameter 1.1423-1.2427 cm, width 0.54-0.6743 cm, thickness 0.8633-1.079 cm, geometric mean diameter 0.8102-0.9663 cm, sphericity 0.7104-0.7703, surface area 2.0620-2.9512 cm2, specific gravity 0.7600-1.0267, bulk density 0.3730-0.6053 g m-3, and porosity 0.5823-0.0430, respectively. The physical properties of the seed showed that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Luffa seeds; Moisture content; Physical properties; Mechanical properties. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4138 |
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| Gely, Maria Cristina; Pagano, Ana María. |
| Moisture constitutes one of the most influential factors in the conservation of sorghum grains during storage due to their relationship with the biological factors that cause postharvest damage, affecting the nutritional and economic values. For this reason it is important to evaluate the effect of moisture content on the physical characteristics of the grain in order to establish the design and operation conditions of the post-harvest processes. Accordingly, the aim of this work is to analyze the dependence on moisture content of physical properties of technological interest for the post-harvest grain sorghum stages.Experimental results show that the moisture significantly affects the properties width, thickness, geometric mean diameter, sphericity, bulk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Post Harvest Grain sorghum Physical properties; Moisture content; Models. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4145 |
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| H.U., Nwannewuihe; M. C., Onwukwe; J.C., Edeh; N. I., Nwagugu; J.N., Nwakaire. |
| Most agricultural materials undergo various forms of preservation in order to enhance shelf life. Sheanut is usually preserved by heating the kernels over fire in a pot for a time period. This affects its properties especially during heat processing. It is expected that this work will provide information that would help optimize such processing. Preserved sheanut kernel samples sourced locally were prepared by manually cleaning, sorting, grinding and sieving to obtain desired particle sizes. The specific heat of the samples were evaluated as a function of particle size (2.36 mm), (1.18 mm and 1.00 mm), moisture content (initial moisture content, 10%, 20%, 30% and 40% db) and temperature (50oC, 60oC, 70oC, 80oC, and 90oC). The specific heat of each particle... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Power system Engineering specific heat; Particle size; Moisture content; Temperature; Sheanut. |
| Ano: 2016 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3800 |
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| Registros recuperados: 91 | |
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