Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Markku Vainio"'
Autor:
Ville Pyykkönen, Erika Winquist, Ari-Matti Seppänen, Markku Vainio, Elina Virkkunen, Kari Koppelmäki, Saija Rasi
Publikováno v:
Bioengineering, Vol 10, Iss 4, p 433 (2023)
This study focuses on the feasibility of the dry anaerobic digestion of solid agricultural biomass for efficient renewable-energy production and nutrient recycling. Methane production and the amount of nitrogen in the digestates were measured in pilo
Externí odkaz:
https://doaj.org/article/4f9a055009be4862ac1136817ceb0c09
Autor:
Jussi Rossi, Juho Uotila, Sucheta Sharma, Toni Laurila, Roland Teissier, Alexei Baranov, Erkki Ikonen, Markku Vainio
Publikováno v:
Photoacoustics, Vol 23, Iss , Pp 100265- (2021)
We present an experimental comparison of photoacoustic responsivities of common highly absorbing carbon-based materials. The comparison was carried out with parameters relevant for photoacoustic power detectors and Fourier-transform infrared (FTIR) s
Externí odkaz:
https://doaj.org/article/a076501d8a824ec488383b9c9063ed24
Publikováno v:
APL Photonics, Vol 6, Iss 2, Pp 026103-026103-10 (2021)
We present a simple method for fully stabilized mid-infrared optical frequency comb generation based on single-pass femtosecond optical parametric generation that is seeded by a continuous-wave laser. We have implemented the method in a periodically
Externí odkaz:
https://doaj.org/article/023afb79585b48d685d5af9433b09a86
Publikováno v:
Microorganisms, Vol 8, Iss 4, p 581 (2020)
Volatile fatty acids (VFAs) are intermediates in the methane formation pathway of anaerobic digestion and can be produced through the fermentation of organic wastes. VFAs have become an anticipated resource- and cost-effective way to replace fossil r
Externí odkaz:
https://doaj.org/article/d49c7948f7704a9e912ed6b8a481fc7e
Autor:
Rasi, Ville Pyykkönen, Erika Winquist, Ari-Matti Seppänen, Markku Vainio, Elina Virkkunen, Kari Koppelmäki, Saija
Publikováno v:
Bioengineering; Volume 10; Issue 4; Pages: 433
This study focuses on the feasibility of the dry anaerobic digestion of solid agricultural biomass for efficient renewable-energy production and nutrient recycling. Methane production and the amount of nitrogen in the digestates were measured in pilo
Autor:
Erkki Ikonen, Sucheta Sharma, Mohsen Ahmadi, Jussi Rossi, Markku Vainio, Zhipei Sun, Andreas Steiger
Publikováno v:
Terahertz, RF, Millimeter, and Submillimeter-Wave Technology and Applications XVI.
Autor:
Sucheta, Sharma, Mohsen, Ahmadi, Jussi, Rossi, Markku, Vainio, Zhipei, Sun, Andreas, Steiger, Erkki, Ikonen
Publikováno v:
Optics express. 30(24)
We report the photoacoustic (PA) response in the terahertz (THz) range by employing a detection process actuated with a silicon cantilever pressure sensor and a carbon-based radiation absorber. The detection relies on the mechanical response of the c
Autor:
Markku Vainio, Mikhail Roiz
This study proposes and demonstrates a versatile method for near- and mid-infrared optical frequency comb generation using multi-seeded femtosecond optical parametric generation. The method allows one to divide the repetition rate by an arbitrarily l
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f2cba4c909d5546183cd434737dc388
https://trepo.tuni.fi/handle/10024/141707
https://trepo.tuni.fi/handle/10024/141707
Autor:
Erkki Ikonen, Jussi Rossi, Juho Uotila, Markku Vainio, Farshid Manoocheri, Toni Laurila, Sucheta Sharma
Publikováno v:
Sharma, S, Laurila, T, Rossi, J, Uotila, J, Vainio, M, Manoocheri, F & Ikonen, E 2022, ' Electromagnetic radiation detection using cantilever-based photoacoustic effect : A method for realizing power detectors with broad spectral sensitivity and large dynamic range ', Sensors and Actuators A: Physical, vol. 337, 113191 . https://doi.org/10.1016/j.sna.2021.113191
Lisää oa-julkaisu, kun saatavilla. A sensitive photoacoustic detection approach employing a silicon cantilever is investigated for power measurement of electromagnetic radiation. The technique which is actuated by pressure waves generated through r
Autor:
Mikhail Roiz, Markku Vainio
Publikováno v:
Optica High-brightness Sources and Light-driven Interactions Congress 2022.
We experimentally demonstrate a method for generating versatile frequency combs based on multi-seeded femtosecond parametric down-conversion. This method produces a mid-infrared frequency comb with dividable repetition rate, tunable offset frequency