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Wyszukujesz frazę "Seeds" wg kryterium: Wszystkie pola


Tytuł:
Distribution of static pressure of seeds in a shallow model silo
Autorzy:
Horabik, Józef
Molenda, Marek
Powiązania:
https://bibliotekanauki.pl/articles/972716.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
bulk of seeds
silo
pressure
friction
Opis:
The influence of the filling method, the seed size and the aspect ratio on the radial distribution of the vertical pressure on the floor of a shallow model silo and radial distribution of tangent stress within the material was investigated. Three filling methods were applied: central, circumferential and distributed. Seeds of five varieties were used: horse bean, field pea, wheat, vetch, and rapeseed. Vertical pressure on the floor of a shallow bin was found to be influenced by the filling method and the seed size and aspect ratio. A significant dip of vertical pressure in the middle radial location was observed in all tests, except two: central and circumferential filling of rapeseed. Wall friction was mobilized in the highest degree in the case of the central filling, while the lowest was mobilization of friction in the case of the circumferential filling.
Źródło:
International Agrophysics; 2017, 31, 2; 167-174
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of 660 nm laser irradiation of soybean seeds on germination, emergence and seedling growth
Autorzy:
Yuri, S.
Jarbas, C.
Powiązania:
https://bibliotekanauki.pl/articles/2083819.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
seed biostimulation
laser diode
soybean seeds
agriculture
indoor greenhouse
Opis:
The aim of the experiments was to study the influence of irradiating soybean seeds (Glycine max, cultivar BRS 537) with a 660 nm laser diode array. The seeds were treated with laser light provided by a device assembled for the experiments with a power output of I = 3.5±0.2 mW cm–2. The effects of biostimulation were analysed by determining the germination percentage and dry mass of normal seedlings in a germination experiment. Also, the seedlings emergence percentage, emergence rate and mean emergence time were determined in an indoor greenhouse experiment. The irradiation of the seeds with laser light showed the effects of positive biostimulation for two of the three treatments with light when compared to the control (without irradiation). The light dose of 1.6 J cm–2 (t = 457.14 s) significantly increased the germination percentage (5.5%), dry mass (58%) and emergence rate (29%) of normal seedlings and reduced the mean emergence time by 10%, while a dose of 3.2 J cm–2 (t = 914.28 s) significantly increased the dry mass (84%) and emergence rate (13%) at p-value ≤ 0.05.
Źródło:
Acta Agrophysica; 2021, 28; 5-18
1234-4125
Pojawia się w:
Acta Agrophysica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of electromagnetic stimulation of alfalfa seeds
Autorzy:
Cwintal, M.
Dziwulska-Hunek, A.
Powiązania:
https://bibliotekanauki.pl/articles/25111.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
In the conducted experiments the effect of presowing He-Ne laser light, magnetic field stimulation or the combination of these two factors of alfalfa seeds on the field emergence, structure and yields in the year of sowing and during three following years of full land use were studied. The examined factors had a significant effect on the number of shoots per 1 m2, plant height, mass of shoots, fresh and dry mass. Electromagnetic stimulation resulted in a significant increase in alfalfa seeds emergence (from 35% – control to 47.8% – magnetic field), number of shoots per 1m2 (from 608 – control to 813 – laser light in cut), but a decrease of the mass of the shoots (from 0.61 g – control to 0.50 g – laser light).
Źródło:
International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Physical properties of cumin and caraway seeds
Autorzy:
Zare, D.
Bakhshipour, A.
Chen, G.
Powiązania:
https://bibliotekanauki.pl/articles/26266.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Opis:
Physical properties of cumin and caraway seeds were measured and compared at constant moisture content of 7.5% w.b. The average thousand mass of grain, mean length, mean width, mean thickness, equivalent diameter, geometric meann diameter, surface area, volume, sphericity, aspect ratio, true density, bulk density and porosity were measured for cumin and caraway. There are significant differences (p<0.01) in most physical properties of cumin and caraway, except porosity and sphericity.
Źródło:
International Agrophysics; 2013, 27, 4
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concentration of free radicals in faba bean seeds after the pre-sowing treatment of the seeds with laser light
Autorzy:
Podlesny, J.
Misiak, L.
Koper, R.
Powiązania:
https://bibliotekanauki.pl/articles/25440.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:
concentration
laser light
pre-sowing treatment
electron paramagnetic resonance
faba bean
free radical
plant cultivation
seed
Źródło:
International Agrophysics; 2001, 15, 3
0236-8722
Pojawia się w:
International Agrophysics
Dostawca treści:
Biblioteka Nauki
Artykuł

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