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Wyszukujesz frazę "stem strength" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Study of the strength properties of pistachio nuts and cluster stem joints for the design and development of a harvesting machine
    Autorzy:
    Mobli, H.
    Tavakoli Hashjin, T.
    Oghabi, H.
    Alimardani, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/24227.pdf
    Data publikacji:
    2004
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    pistachio nut
    pull
    harvesting machine
    physical property
    torsion
    biomechanical property
    development
    strength property
    cluster stem
    nut
    harvest
    bending
    Źródło:
    International Agrophysics; 2004, 18, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of the strength properties of pea stems
    Autorzy:
    Skubisz, G.
    Kravtsova, T.I.
    Velikanov, L.P.
    Powiązania:
    https://bibliotekanauki.pl/articles/25578.pdf
    Data publikacji:
    2007
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    geometrical parameter
    pea plant
    pea stem
    strength property
    anatomical structure
    cutting work
    Źródło:
    International Agrophysics; 2007, 21, 2
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations on tensile load-carrying ability of reed stems
    Badanie nośności łodyg trzciny na rozciąganie
    Autorzy:
    Kowalski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/40121.pdf
    Data publikacji:
    2016
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    reed
    stem
    tensile strength
    plant research
    Źródło:
    Acta Scientiarum Polonorum. Architectura; 2016, 15, 4
    1644-0633
    Pojawia się w:
    Acta Scientiarum Polonorum. Architectura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The effect of silicon on morphological traits and mechanical properties of Polygonatum multiflorum (L.) All. ‘Variegatum’ cut shoots
    Autorzy:
    Pogroszewska, E.
    Szot, P.
    Rubinowska, K.
    Konopińska-Memej, A.
    Świstowska, A.
    Zdybel, A.
    Parzymies, M.
    Durlak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/11859059.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
    Tematy:
    plant cultivation
    ornamental plant
    perennial plant
    Polygonatum multiflorum
    Variegatum cultivar
    plant cultivar
    morphological trait
    mechanical property
    post-harvest longevity
    vase life
    stem strength
    silicon
    Actisil Hydro Plus preparation
    plant research
    Opis:
    Garden perennials are a source of floristry material produced in field or under covers. A perennial producing long, leafy shoots, which in flower arrangements might successfully substitute fern or palm leaves, is Polygonatum multiflorum. The variety characterizing with decorative white margined leaves is ‘Variegatum’. To improve their quality, the growth stimulator Actisil Hydro Plus, which contains 0.6% of active silicon in a form of orthosilicic acid was applied. The aim of the conducted experiment was to estimate the influence of silicon and a place of cultivation (tunnel and open field) on post-harvest quality determined with morphological features, vase life longevity and mechanical properties of Polygonatum multiflorum (L.) All. ‘Variegatum’ stems. The plants were sprayed with water solutions of Actisil in concentrations: 0.2%, 0.3%, and 0.4%, six times during the growing season in weekly intervals, starting from the first decade of May, always in the morning. It was stated that cultivation of Polygonatum in the unheated foil tunnel increases quality of shoots for cut greenery, determined with morphological features and post-harvest longevity. Cultivation of Polygonatum in a foil tunnel and spraying plants with Actisil in concentrations of 0.3 or 0.4% is advantageous due to possibility to increase a number of shoots from 20% to over 31%, their length from 9% to 11% and fresh weight from 52% to 71%, in comparison to control plants. It is advised to treat plants cultivated in a tunnel, with Actisil in concentration of 0.4% as it improved shoots quality evaluated with their diameter and lower leaves blade area. Spraying plants with Actisil in concentrations of 0.2–0.4% in the tunnel and 0.2% in field prolongs post-harvest shoots longevity by 3–4 days. Plants cultivated in the tunnel characterize with higher strength of shoots determined with higher maximum force causing permanent damage and lower stem deflection than plants cultivated in field. Plants grown in a tunnel and sprayed with Actisil in concentrations of 0.4% characterized with the strongest shoots after 14 days of storage, however a similar effect was observed with the concentration of 0.3% and in case of plants cultivated in field and sprayed with 0.4% of Actisil.
    Źródło:
    Acta Scientiarum Polonorum. Hortorum Cultus; 2018, 17, 4; 157-166
    1644-0692
    Pojawia się w:
    Acta Scientiarum Polonorum. Hortorum Cultus
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress equation for a cantilever beam: a model of lodging resistance in field pea
    Autorzy:
    Smitchger, J.A.
    Weeden, N.
    Akin, I.
    Warkentin, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2082901.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Agrofizyki PAN
    Tematy:
    Pisum sativum
    pea
    lodging
    stem strength
    Opis:
    Mechanically harvested crops must be erect (lodging resistant) to facilitate harvest. Stem lodging changes canopy structure, increases disease pressure, reduces yield, and reduces harvest efficiency in pea. A number of studies have examined the traits that cause lodging susceptibility, but the relative impact of each trait is difficult to determine. A great need exists in pea breeding to develop a working model to explain lodging resistance. This study used the flexure formula to predict the amount of lodging variation explained by some of the major traits. Datasets from pea indicate that the percent variation explained by this lodging model is ~58%, and this model can be used to predict the relative impact of an increase in load, height, stem diameter, stem wall thickness, or yield on lodging susceptibility. This study indicates that plant height is strongly correlated with lodging susceptibility, but stem diameter is positively correlated with lodging resistance. Stem wall thickness appears to have no major effect on lodging resistance, which has not been previously reported in pea. Any doubling in plant height would also double the amount of stem material, but stem stress is expected to increase fourfold. A doubling in stem diameter is expected to increase the amount of stem material by fourfold and decrease stem stress by eightfold. The results of this study indicate that plant breeders should focus on increasing basal stem diameter to increase lodging resistance.
    Źródło:
    International Agrophysics; 2020, 34, 2; 213-222
    0236-8722
    Pojawia się w:
    International Agrophysics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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