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Wyświetlanie 1-3 z 3
Tytuł:
A method for probing the refractive index change in photorefractive crystals
Autorzy:
Fu, M.
Gao, C.
Wang, X.
Cui, Y.
Dai, S
Powiązania:
https://bibliotekanauki.pl/articles/174913.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Fourier transform profilometry
refractive index change
photorefractive effect
Opis:
A method for probing refractive index changes in photorefractive crystals using an interferometric technique and digital image processing was proposed. Based on equal thickness interference in LiNbO3 crystal and Fourier transform profilometry, we obtained phase value changes in interferograms induced by a photorefractive effect, and further calculated refractive index changes. The maximal values for extraordinary light (e-light) and ordinary light (o-light) are 6.6×10–4 and 1.2×10–4, respectively.
Źródło:
Optica Applicata; 2013, 43, 4; 731-737
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Anatomy of the Early Cretaceous enantiornithine bird Rapaxavis pani
Autorzy:
O'Connor, J.K.
Chiappe, L.M.
Gao, C.
Zhao, B.
Powiązania:
https://bibliotekanauki.pl/articles/21083.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Instytut Paleobiologii PAN
Tematy:
anatomy
Early Cretaceous
enantiornithine bird
bird
Rapaxavis pani
Aves
Enantiornithes
Longipterygidae
Rapaxavis
Jiufotang Formation
Cretaceous
China
paleontology
Opis:
The exquisitely preserved longipterygid enantiornithine Rapaxavis pani is redescribed here after more extensive preparation. A complete review of its morphology is presented based on information gathered before and after preparation. Among other features, Rapaxavis pani is characterized by having an elongate rostrum (close to 60% of the skull length), rostrally restricted dentition, and schizorhinal external nares. Yet, the most puzzling feature of this bird is the presence of a pair of pectoral bones (here termed paracoracoidal ossifications) that, with the exception of the enantiornithine Concornis lacustris, are unknown within Aves. Particularly notable is the presence of a distal tarsal cap, formed by the fusion of distal tarsal elements, a feature that is controversial in non−ornithuromorph birds. The holotype and only known specimen of Rapaxavis pani thus reveals important information for better understanding the anatomy and phylogenetic relationships of longipterygids, in particular, as well as basal birds as a whole.
Źródło:
Acta Palaeontologica Polonica; 2011, 56, 3
0567-7920
Pojawia się w:
Acta Palaeontologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculation of Clothing Insulation by Serial and Parallel Methods: Effects on Clothing Choice by IREQ and Thermal Responses in the Cold
Autorzy:
Kuklane, K.
Gao, C.
Holmer, I.
Giedraityte, L.
Brode, P.
Candas, V.
Hartog den, E.
Meinander, H.
Richards, M.
Havenith, G.
Powiązania:
https://bibliotekanauki.pl/articles/90632.pdf
Data publikacji:
2007
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
cold protective clothing
insulation
IREQ
serial
parallel
calculation method
Opis:
Cold protective clothing was studied in 2 European Union projects. The objectives were (a) to examine different insulation calculation methods as measured on a manikin (serial or parallel), for the prediction of cold stress (IREQ); (b) to consider the effects of cold protective clothing on metabolic rate; (c) to evaluate the movement and wind correction of clothing insulation values. Tests were carried out on 8 subjects. The results showed the possibility of incorporating the effect of increases in metabolic rate values due to thick cold protective clothing into the IREQ model. Using the higher thermal insulation value from the serial method in the IREQ prediction, would lead to unacceptable cooling of the users. Thus, only the parallel insulation calculation method in EN 342:2004 should be used. The wind and motion correction equation (No. 2) gave realistic values for total resultant insulation; dynamic testing according to EN 342:2004 may be omitted.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2007, 13, 2; 103-116
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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