Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Olli Heikkinen"'
Autor:
Tomi Kanerva, Mari Honkanen, Tanja Kolli, Olli Heikkinen, Kauko Kallinen, Tuomo Saarinen, Jouko Lahtinen, Eva Olsson, Riitta L. Keiski, Minnamari Vippola
Publikováno v:
Catalysts, Vol 9, Iss 2, p 137 (2019)
Techniques to control vehicle engine emissions have been under increasing need for development during the last few years in the more and more strictly regulated society. In this study, vehicle-aged heavy-duty catalysts from diesel and natural gas eng
Externí odkaz:
https://doaj.org/article/12fe24fd19964c1e9b46d03b1b07ee58
Autor:
Oliver Meikar, Daniel Majoral, Olli Heikkinen, Eero Valkama, Sini Leskinen, Ana Rebane, Pekka Ruusuvuori, Jorma Toppari, Juho-Antti Mäkelä, Noora Kotaja
Publikováno v:
Endocrinology. 164
Spermatogenesis is a complex differentiation process that takes place in the seminiferous tubules. A specific organization of spermatogenic cells within the seminiferous epithelium enables a synchronous progress of germ cells at certain steps of diff
Autor:
Olli Heikkinen
Publikováno v:
Made in Finland ISBN: 9780429277429
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7110478cd2fb12b09d833954ee404807
https://doi.org/10.4324/9780429277429-2
https://doi.org/10.4324/9780429277429-2
Autor:
Kauko Kallinen, Minnamari Vippola, Jouko Lahtinen, Riitta L. Keiski, Mari Honkanen, Mika Huuhtanen, Ari Väliheikki, Tanja Kolli, Olli Heikkinen, Marja Kärkkäinen
Publikováno v:
Applied Catalysis B: Environmental. 218:409-419
The impact of sulphur, phosphorus and water and their co-exposure on a monolith-type Pt/SiO 2 -ZrO 2 diesel oxidation catalyst was investigated. The accelerated laboratory-scale sulphur treatments for Pt/SiO 2 -ZrO 2 were done with and without water
Publikováno v:
Surface Science. 664:216-221
Platinum is a metal utilized in many applications. Its catalytic activity can be decreased due to chemical poisoning caused e.g. by phosphorus. To gain more understanding of its poisoning, we present a study of phosphorus adsorption on a platinum (11
Autor:
Mika Huuhtanen, Mari Honkanen, Olli Heikkinen, Jouko Lahtinen, Riitta L. Keiski, Minnamari Vippola, Jakob Birkedal Wagner, Kauko Kallinen, Marja Kärkkäinen, Hua Jiang, Thomas Willum Hansen
Publikováno v:
JOURNAL OF CATALYSIS. 349:19-29
Structural changes of PtPd nanoparticles in a natural gas oxidation catalyst were studied at elevated temperatures in air and low-oxygen conditions and in situ using environmental transmission electron microscopy (ETEM). The fresh catalyst shows
Autor:
Saijaleena Rantanen, Olli Heikkinen
Publikováno v:
Music History and Cosmopolitanism
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::65e439e3abdfcf9eeba8825c08c76936
https://doi.org/10.4324/9781351060950-11
https://doi.org/10.4324/9781351060950-11
Autor:
Olli Heikkinen
Publikováno v:
Etnomusikologian vuosikirja
Vaikka kansallista tai paikallista historiaa kirjoitettaessa usein korostetaan kehityksen omaperäisyyttä ja toimijoiden innovatiivisuutta, ongelmia ratkotaan ja päätöksiä tehdään silmiinpistävän samankaltaisesti ympäri maailmaa. Kansallise
Autor:
Mika Huuhtanen, Riitta L. Keiski, Minnamari Vippola, Mari Honkanen, Marja Kärkkäinen, Tanja Kolli, Ari Väliheikki, Olli Heikkinen, Kauko Kallinen, Jouko Lahtinen
Publikováno v:
Topics in Catalysis. 60:307-311
The effect of sulphur and phosphorus on a Pt/SiO2–ZrO2 catalyst was studied. The laboratory accelerated sulphur (SW) or phosphorus (PW), and their co-exposure (PSW) treatments were done in gas phase for 5 h at 400 °C. The fresh and treated catalys
Autor:
Kauko Kallinen, Minnamari Vippola, Riitta L. Keiski, Mika Huuhtanen, Mari Honkanen, Jouko Lahtinen, Ari Väliheikki, Tanja Kolli, Olli Heikkinen, Marja Kärkkäinen
Publikováno v:
Topics in Catalysis. 59:1044-1048
Phosphorus is found to have a deactivating effect on the catalytic activity of the studied natural-gas-oxidation catalyst. Accelerated laboratory-scale phosphorus treatment was done to the PtPd/Al2O3 natural gas oxidation catalyst. The effect of phos