Zobrazeno 1 - 10
of 219
pro vyhledávání: '"J Piironen"'
Publikováno v:
Czech Journal of Animal Science, Vol 56, Iss 9, Pp 406-413 (2011)
A study was conducted to evaluate the effects of dietary supplementation of phytase B (product of the Aspergillus niger phyB gene expressed in Trichoderma reesei) on feed intake, laying performance, eggshell quality, and on phosphorus and calcium bal
Externí odkaz:
https://doaj.org/article/d535eaddb2aa43d4a61ff521ec81726e
Publikováno v:
Journal of Ichthyology. 53:183-190
Like many salmonid species, Arctic charr (Salvelinus alpinus) is currently threatened by human-induced perturbations. From a conservation perspective, it is important to characterize the genetic diversity of populations so that genetically distinct u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2553413b8f98adefc36b0f13dd2a573b
https://doi.org/10.1134/s0032945213020136
https://doi.org/10.1134/s0032945213020136
Akademický článek
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Autor:
Lauri Markelin, Eija Honkavaara, Risto Kuittinen, Juha Suomalainen, J Piironen, Jouni Peltoniemi, Jyri Näränen
Publikováno v:
ISPRS Journal of Photogrammetry and Remote Sensing. 62:434-446
The Sjokulla test site is used for testing and calibrating aerial images. The permanent test field is made of four types of gravel (dark gabbro, grey granite, red granite, white limestone) in two sizes (diameters 8–16 mm and 4–8 mm) set in variou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e26dbf0afdd3456afc1acc0568dbe968
https://doi.org/10.1016/j.isprsjprs.2007.07.009
https://doi.org/10.1016/j.isprsjprs.2007.07.009
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 43:2294-2304
The bidirectional reflection distribution functions (BRDF) of snow have been measured at high spectral resolution at various locations in Finland (Vuotso, Hyytia/spl uml/la/spl uml/, Sodankyla/spl uml/, Kilpisja/spl uml/rvi, Rovaniemi, Sodankyla/spl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9de0001b4c1e46abfcbb6801dc5c02e
https://doi.org/10.1109/tgrs.2005.855131
https://doi.org/10.1109/tgrs.2005.855131
Publikováno v:
Canadian Journal of Physics. 81:135-143
We present photometry of snow samples in the backscattering direction, i.e., at very small phase (light-source - target - observer) angles. Relative brightness measurements are taken to study the backscattering behaviour of snow and ice samples to be
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4aadad759b4a0d96af8eaf781b71c82d
https://doi.org/10.1139/p02-119
https://doi.org/10.1139/p02-119
Autor:
Sanna Kaasalainen, Karri Muinonen, J. Piironen, Alberto Cellino, Alan W. Harris, Mikko Kaasalainen
Publikováno v:
Icarus. 161:34-46
A method for interpretation of asteroid phase curves, based on empirical modeling and laboratory measurements, is outlined and preliminary results are presented. A linear–exponential function is used to describe the opposition peaks and negative po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::023e5d784989330d4e98e7223c8bfe53
https://doi.org/10.1016/s0019-1035(02)00020-9
https://doi.org/10.1016/s0019-1035(02)00020-9
Autor:
J. Piironen, O. V. Miloslavskaya, Yu. G. Shkuratov, D. G. Stankevich, J.-L Josset, Sanna Kaasalainen, A. A. Ovcharenko, Karri Muinonen
Publikováno v:
Planetary and Space Science. 50:1339-1344
The lunar surface reveals a sharp opposition effect, which is to be explained by the shadowing and coherent backscattering mechanisms. Generalizing the radiative transfer theory via Monte Carlo methods, we are carrying out studies of backscattering i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7cd134795ad617fe72f194837a18e9f9
https://doi.org/10.1016/s0032-0633(02)00128-9
https://doi.org/10.1016/s0032-0633(02)00128-9
Publikováno v:
Icarus. 159:369-395
We present models of the shapes and rotational states of selected asteroids based on data from the Uppsala Asteroid Photometric Catalogue. The results show a wide variety of shapes especially among the smaller asteroids. Few asteroids show clear sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4d5a4a4473099d68e5d6889e6b8a64c
https://doi.org/10.1006/icar.2002.6907
https://doi.org/10.1006/icar.2002.6907
Autor:
William D. Smythe, Yu. G. Shkuratov, J. Piironen, Karri Muinonen, Vera Rosenbush, Paul Helfenstein, Evgenij Zubko, A. A. Ovcharenko, O. V. Miloslavskaya, Robert M. Nelson
Publikováno v:
Icarus. 159:396-416
To better understand the negative polarization and brightness opposition effects observed on airless celestial bodies, we carried out simultaneous photometric and polarimetric measurements of laboratory samples that simulate the structure of planetar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::08b4802352ccaea8b603c3368564ea6f
https://doi.org/10.1006/icar.2002.6923
https://doi.org/10.1006/icar.2002.6923