全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:P. Nikkola , I. Mänttäri , O.T. Rämö
来源:[J].Bulletin of the Geological Society of Finland(IF 0.786), 2017, Vol.89 (1), pp.20-34DOAJ
摘要:The Salittu Formation is one of the few metavolcanic successions in the U-Pb zircon single grain dating using the LA-MC-ICP-MS technique was utilized to determine the age of the host rocks of the Juomasuo Au-Co-Cu deposit located in the late Archean Kuusamo supracrustal belt. Eve...
作者:P. Nikkola , H.I. Reynolds
来源:[J].Journal of Volcanology and Geothermal Research(IF 2.193), 2017, Vol.340, pp.155-169Elsevier
摘要:Abstract(#br)The 6-month long eruption at Holuhraun (August 2014–February 2015) in the Bárðarbunga-Veiðivötn volcanic system was the largest effusive eruption in Iceland since the 1783–1784 CE Laki eruption. The lava flow field covered ~ 84 km 2 and has an estimated bul...
作者:P. Nikkola , C. Mahmed ...
来源:[J].International Journal of Refrigeration(IF 1.793), 2014, Vol.37, pp.43-50Elsevier
摘要:Abstract(#br)The 1D active magnetic regenerator model developed at the University of Applied Sciences of Western Switzerland is described. The system of two partial differential equations is discretized with the finite differences method backward in time and solved with the tridi...
作者:O. Dumbrajs , P. Nikkola , B. Piosczyk
来源:[J].International Journal of Electronics(IF 0.509), 2001, Vol.88 (2), pp.215-224Taylor & Francis
摘要:Space-charge effects (so-called negative-mass instability) as the reason for electron energy spread arising in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. Theoretical calculations are compared with results of measurements perfo...
作者:O. Dumbrajs , P. Nikkola , B. Piosczyk
来源:[J].International Journal of Electronics(IF 0.509), 2001, Vol.88 (2), pp.215-224Taylor & Francis
摘要:Space-charge effects (so-called negative-mass instability) as the reason for electron energy spread arising in the region of the electron drift between the cathode and the cavity of a gyrotron are discussed. Theoretical calculations are compared with results of measurements perfo...

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