Temat: cone size - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The morphological traits of cones and seeds of Abies alba in the Middle Sudeten
Autorzy:: Tracz, M
Barzdajn, W.
Powiązania:: https://bibliotekanauki.pl/articles/41449.pdf
Data publikacji:: 2007
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: fir
Abies alba
cone
seed
morphological trait
cone variability
Sudetes Mountains
cone size
seed feature
Opis:: Twenty Abies alba trees were selected for restoration purpose of species in the Sudeten. Eleven features of cone and seeds collected from those trees were examined and all of them significantly differed selected trees. Five features, i.e. cone length, cone biggest diameter, length and width of ovuliferous scales, and length of wings with were recommended as having the highest diagnostic value.
Źródło:: Dendrobiology; 2007, 58; 59-65
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Effect of Cone Size on the Bonding Strength of Bimetallic Composite Pipes Produced by Drawing Approach
Autorzy:: Zheng, M.
Zhao, T.
Gao, H.
Teng, H.
Hu, J.
Powiązania:: https://bibliotekanauki.pl/articles/352274.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bi-metallic composite pipe
drawing approach
cone size
interfacial bonding strength
ideal elastoplastic
Opis:: The effect of cone size on interfacial bonding strength of bimetallic composite pipe manufactured by drawing approach is studied on base of the plane strain assumption and ideal elastic-plastic model, a simple expression for the effect of cone size on the bonding strength of bimetallic composite pipes is proposed. The agreement of the predicted results with the experimental results shows the reliability.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 1; 451-456
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Wpływ jemioły (Viscum album) na jakość nasion sosny zwyczajnej (Pinus sylvestris)
Influence of mistletoe (Viscum album) on the quality of Scots pine (Pinus sylvestris) seeds
Autorzy:: Jasiczek, N.
Giertych, M.J.
Suszka, J.
Powiązania:: https://bibliotekanauki.pl/articles/987164.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Leśne
Tematy:: lesnictwo
Nadlesnictwo Bolewice
drzewostany nasienne
drzewa lesne
sosna zwyczajna
Pinus sylvestris
nasiona
jakosc nasion
kielkowanie nasion
wielkosc szyszek
produkcja nasion
czynniki biotyczne
polpasozyty
jemiola
Viscum album
seed quality
germination
seed production
semiparasite
cone size
Opis:: Mistletoe is semiparasite adversely affecting the functioning of their hosts especially at water management level. So far, there have been no reports about the impact of mistletoe on seeds from any host. The aim of the work was to evaluate the effect of the presence of mistletoe on the quality of the seeds of Scots pine (Pinus sylvestris). Unopened cones from infected and uninfected trees were collected in April 2015 in the Excluded Seed Stand in Bolewice Forest District (52°2354.347N; 16°0501.978E). Measurements of cones and seeds were made. Some seeds were used for pot experiment, where the seedlings were planted from May to October 2015. On the second part of the seeds in the end of July and August germination tests were made. The size and mass of the cones, the number and weight of seeds, and the height and weight of the seedlings were lower for the material collected from the mistletoe trees. The differences were not large but statistically significant (tabs. 1 and 2). The results showed that mistletoe has a negative impact on the parameters of cones, seedlings and seeds quality.
Źródło:: Sylwan; 2017, 161, 07; 558-564
0039-7660
Pojawia się w:: Sylwan
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: The effect of PWHT on weld properties of titanium alloy for refurbishment of aircraft engine exhaust cone
Autorzy:: Ardy, H.
Yoewono, S.
Sugianto, A.
Powiązania:: https://bibliotekanauki.pl/articles/248139.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine exhaust cone
Ti-6Al-4V
GTAW
PWHT
microstructure
grain size
stress analysis
Opis:: The mounting bolt hole of aircraft engine exhaust cone was found cracked in the weld area. Exhaust cone material is alfa/beta titanium (Ti-6Al-4V) alloy. The cracked section will be repaired by welding to restore its function. The purpose of this research is to evaluate the effect of post weld heat treatment (PWHT) on ductility, grain size, and shear strength of Ti-6Al-4V plates (0.063 in. thickness) welded by gas tungsten arc welding (GTAW) using commercial purity (CP) titanium wire electrode (AMS 4951H). The weld quality was evaluated by non-destructive and destructive tests, using the acceptance criteria of AWS D17.1 and AWS B2.1 as references. The effect of PWHT was examined by preparing two weld specimens: with and without PWHT at 620 centigrade. Non-destructive inspection by dye penetrant and xray radiography tests revealed that the weld in these two specimens is free from surface and internal defects. Weld specimen without PWHT is brittle and failed during fillet break test, whereas PWHT specimen is ductile and pass the same test. Metallography observation was conducted to measured grain size of base metal and heat affected zone (HAZ). The average grain size of PWHT specimen is 18.40 mi m on base metal and 36.80 mi m on HAZ, and for non-PWHT specimen is 26.85 mi m on base metal and 52.10 mi m on HAZ. Using Hall-Petch approach, the yield strength is calculated about 920 MPa on the base metal of PWHT specimen, which result in the shear strength of about 531 MPa. Under static loading, the shear stress on the outer surface of exhaust cone due to exhaust gas is about 38 MPa, which is much lower than material shear strength.
Źródło:: Journal of KONES; 2012, 19, 1; 9-14
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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