Search Results - "Laakso, H."

Multipoint analysis of compressive fluctuations in the fast and slow solar wind by Roberts, O. W., Narita, Y., Li, X., Escoubet, C. P., Laakso, H.

“…Compressible turbulence in the solar wind is a topic of much recent debate. To understand the various compressive fluctuations at scales comparable to proton…”
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Cluster after 20 Years of Operations: Science Highlights and Technical Challenges by Escoubet, C P, Masson, A, Laakso, H, Goldstein, M L, Dimbylow, T, Bogdanova, Y V, Hapgood, M, Sousa, B, Sieg, D, Taylor, M G G T

“…The Cluster mission was the first constellation using four identical spacecraft to study Sun-Earth connection plasma processes. Using four spacecraft in a…”
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Executive function subdomains are associated with post‐stroke functional outcome and permanent institutionalization by Laakso, H. M., Hietanen, M., Melkas, S., Sibolt, G., Curtze, S., Virta, M., Ylikoski, R., Pohjasvaara, T., Kaste, M., Erkinjuntti, T., Jokinen, H.

“…Background and purpose Impairment of executive functions (EFs) is a common cognitive symptom post‐stroke and affects independence in daily activities. Previous…”
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Ambient aromatic hydrocarbon measurements at Welgegund, South Africa by Jaars, K, Beukes, J. P, van Zyl, P. G, Venter, A. D, Josipovic, M, Pienaar, J. J, Vakkari, V, Aaltonen, H, Laakso, H, Kulmala, M, Tiitta, P, Guenther, A, Hellén, H, Laakso, L, Hakola, H

“…Aromatic hydrocarbons are associated with direct adverse human health effects and can have negative impacts on ecosystems due to their toxicity, as well as…”
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Simultaneous Polar and Cluster Observations in the Northern and Southern Middle‐Altitude Polar Cusps Around Equinox by Pitout, F., Marchaudon, A., Trattner, K. J., Berchem, J., Laakso, H., Escoubet, C. P.

“…We present an event of simultaneous observations of the northern and southern middle‐altitude polar cusps by the Polar spacecraft and Cluster fleet that…”
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Description of the Entropy™ algorithm as applied in the Datex-Ohmeda S/5™ Entropy Module by Viertiö-Oja, H., Maja, V., Särkelä, M., Talja, P., Tenkanen, N., Tolvanen-Laakso, H., Paloheimo, M., Vakkuri, A., Yli-Hankala, A., Meriläinen, P.

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New particle formation events in semi-clean South African savannah by Vakkari, V., Laakso, H., Kulmala, M., Laaksonen, A., Mabaso, D., Molefe, M., Kgabi, N., Laakso, L.

“…This study is based on 18 months (20 July 2006–5 February 2008) of continuous measurements of aerosol particle size distributions, air ion size distributions,…”
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Time-frequency balanced spectral entropy as a measure of anesthetic drug effect in central nervous system during sevoflurane, propofol, and thiopental anesthesia by Vakkuri, A., Yli-Hankala, A., Talja, P., Mustola, S., Tolvanen-Laakso, H., Sampson, T., Viertiö-Oja, H.

“…Background:  Time‐frequency balanced spectral entropy of electroencephalogram (EEG) and frontal electromyogram (FEMG) is a novel measure of hypnosis during…”
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Long-term observations of aerosol size distributions in semi-clean and polluted savannah in South Africa by Vakkari, V, Beukes, J. P, Laakso, H, Mabaso, D, Pienaar, J. J, Kulmala, M, Laakso, L

“…This study presents a total of four years of sub-micron aerosol particle size distribution measurements in the southern African savannah, an environment with…”
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Recent highlights from Cluster, the first 3-D magnetospheric mission by Escoubet, C P, Masson, A, Laakso, H, Goldstein, M L

“…The Cluster mission has been operated successfully for 14 years. During this time period, the evolution of the orbit has enabled Cluster to sample many more…”
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Global Burden of Small Vessel Disease–Related Brain Changes on MRI Predicts Cognitive and Functional Decline by Jokinen, Hanna, Koikkalainen, Juha, Laakso, Hanna M., Melkas, Susanna, Nieminen, Tuomas, Brander, Antti, Korvenoja, Antti, Rueckert, Daniel, Barkhof, Frederik, Scheltens, Philip, Schmidt, Reinhold, Fazekas, Franz, Madureira, Sofia, Verdelho, Ana, Wallin, Anders, Wahlund, Lars-Olof, Waldemar, Gunhild, Chabriat, Hugues, Hennerici, Michael, O’Brien, John, Inzitari, Domenico, Lötjönen, Jyrki, Pantoni, Leonardo, Erkinjuntti, Timo

“…BACKGROUND AND PURPOSE—Cerebral small vessel disease is characterized by a wide range of focal and global brain changes. We used a magnetic resonance imaging…”
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South African EUCAARI measurements: seasonal variation of trace gases and aerosol optical properties by Laakso, L, Vakkari, V, Virkkula, A, Laakso, H, Backman, J, Kulmala, M, Beukes, J. P, van Zyl, P. G, Tiitta, P, Josipovic, M, Pienaar, J. J, Chiloane, K, Gilardoni, S, Vignati, E, Wiedensohler, A, Tuch, T, Birmili, W, Piketh, S, Collett, K, Fourie, G. D, Komppula, M, Lihavainen, H, de Leeuw, G, Kerminen, V.-M

“…In this paper we introduce new in situ observations of atmospheric aerosols, especially chemical composition, physical and optical properties, on the eastern…”
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Characterisation of sub-micron particle number concentrations and formation events in the western Bushveld Igneous Complex, South Africa by Hirsikko, A, Vakkari, V, Tiitta, P, Manninen, H. E, Gagné, S, Laakso, H, Kulmala, M, Mirme, A, Mirme, S, Mabaso, D, Beukes, J. P, Laakso, L

“…South Africa holds significant mineral resources, with a substantial fraction of these reserves occurring and being processed in a large geological structure…”
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Boundary layer nucleation as a source of new CCN in savannah environment by Laakso, L, Merikanto, J, Vakkari, V, Laakso, H, Kulmala, M, Molefe, M, Kgabi, N, Mabaso, D, Carslaw, K. S, Spracklen, D. V, Lee, L. A, Reddington, C. L, Kerminen, V.-M

“…The South African savannah region is a complex environment of air pollution and natural emissions influenced by a strong seasonal cycle in biomass burning and…”
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Spatial Distribution of Rolled up Kelvin-Helmholtz Vortices at Earth's Dayside and Flank Magnetopause by Taylor, M. G. G. T., Hasegawa, H., Lavraud, B., Phan, T., Escoubet, C. P., Dunlop, M. W., Bogdanova, Y. V., Borg, A. L., Volwerk, M., Berchem, J., Constantinescu, O. D., Eastwood, J. P., Masson, A., Laakso, H., Soucek, J., Fazakerley, A. N., Frey, H. U., Panov, E. V., Shen, C., Shi, J. K., Sibeck, D. G., Pu, Z. Y., Wang, J., Wild, J. A.

“…The Kelvin-Helmholtz Instability (KHI) can drive waves at the magnetopause. These waves can grow to form rolled-up vortices and facilitate transfer of plasma…”
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Cluster and MMS Simultaneous Observations of Magnetosheath High Speed Jets and Their Impact on the Magnetopause by Escoubet, C. Philippe, Hwang, K.-J., Toledo-Redondo, S., Turc, L., Haaland, S. E., Aunai, N., Dargent, J., Eastwood, Jonathan P., Fear, R. C., Fu, H., Genestreti, K. J., Graham, Daniel B., Khotyaintsev, Yu V., Lapenta, G., Lavraud, Benoit, Norgren, C., Sibeck, D. G., Varsani, A., Berchem, J., Dimmock, A. P., Paschmann, G., Dunlop, M., Bogdanova, Y. V., Roberts, Owen, Laakso, H., Masson, Arnaud, Taylor, M. G. G. T., Kajdič, P., Carr, C., Dandouras, I., Fazakerley, A., Nakamura, R., Burch, Jim L., Giles, B. L., Pollock, C., Russell, C. T., Torbert, R. B.

“…When the supersonic solar wind encounters the Earth's magnetosphere a shock, called bow shock, is formed and the plasma is decelerated and thermalized in the…”
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Basic characteristics of atmospheric particles, trace gases and meteorology in a relatively clean Southern African Savannah environment by Laakso, L., Laakso, H., Aalto, P. P., Keronen, P., Petäjä, T., Nieminen, T., Pohja, T., Siivola, E., Kulmala, M., Kgabi, N., Molefe, M., Mabaso, D., Phalatse, D., Pienaar, K., Kerminen, V.-M.

“…We have analyzed one year (July 2006–July 2007) of measurement data from a relatively clean background site located in dry savannah in South Africa. The…”
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Dynamical processes in space: Cluster results by Escoubet, C. P., Taylor, M. G. G. T., Masson, A., Laakso, H., Volpp, J., Hapgood, M., Goldstein, M. L.

“…After 12 years of operations, the Cluster mission continues to successfully fulfil its scientific objectives. The main goal of the Cluster mission, comprised…”
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The Double Star mission by Liu, Z. X., Escoubet, C. P, Pu, Z., Laakso, H., Shi, J. K., Shen, C., Hapgood, M.

“…The Double Star Programme (DSP) was first proposed by China in March, 1997 at the Fragrant Hill Workshop on Space Science, Beijing, organized by the Chinese…”
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RPC-MIP: the Mutual Impedance Probe of the Rosetta Plasma Consortium by Trotignon, J G, Michau, J L, Lagoutte, D, Chabassiere, M, Chalumeau, G, Colin, F, Decreau, PME, Geiswiller, J, Gille, P, Grard, R, Hachemi, T, Hamelin, M, Eriksson, A, Laakso, H, Lebreton, J P, Mazelle, C, Randriamboarison, O, Schmidt, W, Smit, A, Telljohann, U, Zamora, P

“…Issue Title: Rosetta: Mission to Comet 67P/Churyumov-Gerasimenko The main objective of the Mutual Impedance Probe (MIP), part of the Rosetta Plasma Consortium…”
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