Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Timo Karppinen"'
Publikováno v:
British Journal of Dermatology. 171:1172-1180
Summary Background Daylight-mediated photodynamic therapy (DL-PDT) using methyl-5-aminolaevulinate (MAL) is effective for thin, grade I, actinic keratoses (AK). There are no published studies of other photosensitizers used in DL-PDT. Objectives To co
Autor:
Pasi Karppinen, Matti Kalliokoski, J. Heino, Eija Tuominen, R. Turpeinen, T. Hilden, R. Lauhakangas, Timo Karppinen
Publikováno v:
Physics Procedia. 37:464-471
High resolution scanning system was used to locate the areas on GEM-foils that might contain short-circuit. These areas were analyzed by threshold method for fast identification. Different methods to remove short-circuits on GEM-foils were studied. S
Autor:
Marko Peura, Seppo Andersson, Ari Salmi, Mika Torkkeli, Ritva Serimaa, Edward Hæggström, Timo Karppinen
Publikováno v:
Materials Science Forum. 599:126-136
The excellent mechanical properties of wood arise from its cellular and cell wall structure. X-ray scattering, ultrasound, and mechanical testing is combined to study the effects of strain on crystalline cellulose in wood. Results for dry and re-mois
Publikováno v:
Measurement Science and Technology. 17:N97-N101
An affordable acoustic method to estimate mechanical film characteristics with in-plane shear and longitudinal waves was developed. A 23 kHz (24% FBW, −3 dB) signal was excited into thin plate-like samples with a piezoceramic pickup (Ronette ST105/
Publikováno v:
The European Physical Journal Applied Physics. 32:65-71
We introduce a method to measure liquid absorption into paper based on measuring white light reflected from it.' The method was used with 49.8-51.7 g/m 2 pilot papers, whose hydrophobicity was tuned by their fiber content and furnish. In addition, on
Publikováno v:
Holzforschung. 59:451-455
The elastic properties of Norway spruce were studied by means of ultrasound. Samples were from stems that were grown either at a medium- or a high-fertility site in Finland. The stiffness modulus was determined in the longitudinal, radial, and tangen
Publikováno v:
Measurement Science and Technology. 15:1223-1229
We introduce a method to measure paper wetting based on the measurement of monochromatic (670 nm) light transmission through paper. The samples were 49.8–51.7 g m−2 handsheets, the hydrophobicity of which was tuned by the fibre content of the fur
Publikováno v:
Measurement Science and Technology. 13:770-774
In the first part of this work ultrasonic thickness resonances were measured with offset paper samples, 80-240 g m-2 in grammage. The resonance frequency was found to be linearly dependent on the grammage of the samples. In the second part of this in
Publikováno v:
Measurement Science and Technology. 12:1336-1341
We investigated the change in surface roughness of paper during wetting. Four kinds of paper were examined by time-dependent attenuation of focused 1.2 MHz airborne ultrasound reflected from a paper sample. The samples were wetted with fog from mixtu
Autor:
H. Lonka, Kimmo Korhonen, Markku Kulmala, M. Bauer-Pfundstein, Kari E. J. Lehtinen, A. Poikonen, Mikko Kurri, Terhi K. Laurila, Mika Komppula, Edith Rodriguez, A. Hirsikko, Y. Viisanen, Timo Karppinen, Ari Laaksonen, Tuukka Petäjä, Dmitri Moisseev, J. Heinonen, Annika Nordbo, V. Aaltonen, Curtis R. Wood, Ewan O'Connor, E. Giannakaki, Eija Asmi, A. Pfüller, Heikki Lihavainen
Publikováno v:
Atmospheric Measurement Techniques, Vol 7, Iss 5, Pp 1351-1375 (2014)
Atmospheric measurement techniques 7(5), 1351-1375 (2014). doi:10.5194/amt-7-1351-2014
Atmospheric Measurement Techniques
Atmospheric measurement techniques 7(5), 1351-1375 (2014). doi:10.5194/amt-7-1351-2014
Atmospheric Measurement Techniques
The Finnish Meteorological Institute, in collaboration with the University of Helsinki, has established a new ground-based remote-sensing network in Finland. The network consists of five topographically, ecologically and climatically different sites
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0aa8f69f824c958544995b8c5eec1595
https://doi.org/10.5194/amtd-6-7251-2013
https://doi.org/10.5194/amtd-6-7251-2013