Temat: angle of repose - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Impact of chemical and physical properties on flowability characteristics of corn distillers dried grains with solubles
Autorzy:: Pekel, A.Y.
Calik, A.
Kuter, E.
Alatas, M.S.
Oklen, S.B.
Kizil, A.
Bulat, M.
Cengiz, O.
Powiązania:: https://bibliotekanauki.pl/articles/2082879.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: angle of repose
bulk density
compressibility
distillers dried grains with solubles
flowability
Opis:: The influence of the physical and chemical composition of corn distillers dried grains with solubles on its flowability was evaluated in the current study. The samples were evaluated for angle of repose, compressibility, Hausner ratio, tapped density, bulk density, mean bulk density, colour and nutrient content. PROC CORR and REG procedures were used to determine correlations. The ether extract was negatively correlated with crude protein and redness (a*), while crude protein was negatively correlated with yellowness (b*). Acid detergent fibre and neutral detergent fibre were negatively correlated with a* and positively correlated with lightness (L*), respectively. Compressibility showed a negative correlation with bulk density. Bulk density, tapped density and mean bulk density did not impact the angle of repose. The angle of repose was positively correlated with the compressibility and Hausner ratio. Apart from the correlation between acid detergent fibre and tapped density, the angle of repose and other physical parameters were not affected by the nutrient composition of the distillers dried grains with solubles samples. In conclusion, the results of this study indicate that nutrient composition has little influence over the flowability of distillers dried grains with solubles but compressibility and the Hausner ratio can be used to predict the potential flow characteristics of corn distillers dried grains with solubles.
Źródło:: International Agrophysics; 2020, 34, 2; 195-202
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Handling and transportation properties of rapeseed biomass as affected by particle size
Autorzy:: Bojanowska, Milena
Powiązania:: https://bibliotekanauki.pl/articles/29521042.pdf
Data publikacji:: 2023
Wydawca:: Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:: rapeseed meal
rapeseed cake
canola
biomass
agricultural commodities
bulk storage
flowability
logistics vulnerability
particle size
angle of repose
porosity
bulk density
agricultural bulk solids
Opis:: Rapeseed by-products of seeds de-oiling, particularly expellers and post-extracted meal, are currently considered an important biomass that can be used as an alternative energy source, either in raw form or after conversion to biochar. Rapeseed biomass represents a difficult-to-handle cargo, mainly due to its sensitivity to mechanical, climatic, and biological impacts, as well as its dusty nature. This study aims to determine the physical properties of rapeseed meals and their fractions. Morphological and chemical features of six particle sets are investigated in order to explain the variation in their physical properties having importance in handling and transportation processes. The true density of fractions increases when the particle size decreases due to the diminishing quantitative share of seed coats. No correlation is observed between true and bulk densities, as the particle shape, surface sculpture, and adhesion affect the mutual particle arrangements. Along with a decrease in the particle size from 0.4 mm, a rapid decrease in the flowability is observed. The tendency of the finest dust (d < 0.075 mm) to form agglomerated complexes causes its lower bulk density, higher porosity, and higher angles of repose in comparison to coarse dust (0.075–0.4 mm). It is concluded that a relatively low tendency to free flowing of natural RSM is mainly caused by its wide-ranging particle size distribution and their geometry differentiation, which facilitate mutual particle interlockings. The known cases of blockages of silos, bins, hoppers, and transfer chutes may be mainly caused by the powder fractions (< 0.2 mm), with a much lower flowability than other particles.
Źródło:: Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2023, 74 (146); 5-15
1733-8670
2392-0378
Pojawia się w:: Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Physical properties of seeds of the selected oil plants
Właściwości fizyczne nasion wybranych roślin oleistych
Autorzy:: Krajewska, M.
Ślaska-Grzywna, B.
Andrejko, D.
Powiązania:: https://bibliotekanauki.pl/articles/94042.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Rolniczej
Tematy:: oil plants
seeds
MTS
angle of slide
angle of repose
tap density
bulk density
compressive resistance
roślina oleista
nasiona
kąt usypu
kąt zsypu
gęstość utrzęsiona
gęstość usypowa
wytrzymałość na ściskanie
Opis:: The paper examines the selected physical properties of seeds of 8 plants used in agri-food processing industry. These are: winter rapeseed (Brassica napus L.) Adriana cultivar, sesame (Sesamumindicum L.), common flax (Linum usitatissimum L.) Luna cultivar, husked sunflower (Helianthus L.) (country of origin – Bulgaria), hemp (Cannabis sativa L.) Benikocultivar, blue poppy (Papaver somniferum L.) Major cultivar, garden cress (Lepidium sativum L.), black caraway (Nigella Sativa L.). In the research material we determined the following: mass of thousand seeds (MTS), piling angle and angle of repose, tap and bulk density and compressive resistance of single seeds. Some seeds from the selected plant species differed with shape and size. Thus, the results determining the physical properties were varied.
W pracy zbadano wybrane właściwości fizyczne nasion 8 roślin wykorzystywanych w przetwórstwie rolno-spożywczym, takich jak: rzepak ozimy (Brassica napus L.) odmiany Adriana, sezam indyjski (Sesamum indicum L.), len zwyczajny (Linum usitatissimum L.) odmiany Luna, słonecznik łuskany (Helianthus L.) (kraj pochodzenia – Bułgaria), konopie siewne (Cannabis sativa L.) odmiany Beniko, mak niebieski (Papaver somniferum L.) odmiany Major, rzeżucha ogrodowa (Lepidium sativum L.), czarnuszka siewna (Nigella Sativa L.). W materiale badawczym oznaczono: masę 1000 nasion (MTS), kąt zsypu i usypu nasion, gęstość utrzęsioną i usypową nasion oraz wytrzymałość pojedynczych nasion na ściskanie. Niektóre nasiona spośród wybranych gatunków roślin różniły się między sobą zarówno kształtem jak i wielkością, stąd też wyniki oznaczeń właściwości fizycznych były zróżnicowane.
Źródło:: Agricultural Engineering; 2016, 20, 1; 69-77
2083-1587
Pojawia się w:: Agricultural Engineering
Dostawca treści:: Biblioteka Nauki

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