'Aktiivisen verkkokansalaisen' retorisesta tuottamisesta

Autor: Jari Peltola

Publikováno v: Media & Viestintä, Vol 26, Iss 3 (2003)

Externí odkaz: https://doaj.org/article/3c9925497515454ba95f19ed60a985cc

Solving the discrepancy between the direct and relative-rate determinations of unimolecular reaction kinetics of dimethyl- substituted Criegee intermediate (CH3)2COO using a new photolytic precursor

Autor: Jari Peltola, Prasenjit Seal, Niko Vuorio, Petri Heinonen, Arkke Eskola

We have performed direct kinetic measurements of thermal unimolecular reaction of (CH3)2COO in the temperature 243– 340 K and pressure 5–350 Torr ranges using time-resolved UV-absorption spectroscopy. We have utilized a new photolytic precursor,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1d267107c0d170df4d5a8ab92316fc64
http://hdl.handle.net/10138/343684

Time-resolved, broadband UV-absorption spectrometry measurements of Criegee intermediate kinetics using a new photolytic precursor: unimolecular decomposition of CH

Autor: Jari, Peltola, Prasenjit, Seal, Anni, Inkilä, Arkke, Eskola

Publikováno v: Physical chemistry chemical physics : PCCP. 22(21)

We present a time-resolved broadband cavity-enhanced UV-absorption spectrometer apparatus that we have constructed and utilized for temperature- and pressure-dependent kinetic measurements of formaldehyde oxide (CH

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::2344a3d0eac48c74ff6b3e62ff972daa
https://pubmed.ncbi.nlm.nih.gov/32347242

A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air

Autor: Daiana Leuenberger, Andrea Pogány, Nicholas A. Martin, Bernhard Niederhauser, Valerio Ferracci, Volker Ebert, Carlo Tiebe, David Balslev-Harder, Janneke van Wijk, Marsailidh Twigg, Klaus Wirtz, Stefan Persijn, Christine F. Braban, Olavi Vaittinen, Tuomas Hieta, Nathan Cassidy, Céline Pascale, Jari Peltola

Publikováno v: Pogány, A, Balslev-Harder, D, Braban, C F, Cassidy, N, Ebert, V, Ferracci, V, Hieta, T, Leuenberger, D, Martin, N A, Pascale, C, Peltola, J, Persijn, S, Tiebe, C, Twigg, M M, Vaittinen, O, Van Wijk, J, Wirtz, K & Niederhauser, B 2016, ' A metrological approach to improve accuracy and reliability of ammonia measurements in ambient air ', Measurement Science and Technology, vol. 27, no. 11, 115012 . https://doi.org/10.1088/0957-0233/27/11/115012

The environmental impacts of ammonia (NH3) in ambient air have become more evident in the recent decades, leading to intensifying research in this field. A number of novel analytical techniques and monitoring instruments have been developed, and the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aa0ebadb9a7d056f56e6c1ca7eae43f4

Thermal effects in singly resonant continuous-wave optical parametric oscillators

Autor: Frans J. M. Harren, Stefan Persijn, Markku Vainio, Jari Peltola, Lauri Halonen

Publikováno v: Applied Physics B. Lasers and Optics, 94, 3, pp. 411-427
Applied Physics B. Lasers and Optics, 94, 411-427

Stability and tuning characteristics of continuous-wave optical parametric oscillators (CW OPOs) are affected by various thermal effects arising from optical absorption in nonlinear crystals. In this paper, we present an experimental study of such ef

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76c75522a5a132e2b2adb22e861627b6
https://doi.org/10.1007/s00340-008-3287-9