Browsing Luonnontieteiden, metsätieteiden ja tekniikan tiedekunta by Title

Now showing items 1124-1143 of 1562

    • Probing coherence Stokes parameters of three-component light with nanoscatterers 

      Guo, Mengwen; Norrman, Andreas; Friberg, Ari T; Setälä, Tero (The Optical Society of America, 2022)
      We establish a method to determine the spectral coherence Stokes parameters of a random three-component optical field via scattering by two dipolar nanoparticles. We show that measuring the intensity and polarization-state ...

    • Probing the Electromagnetic Degree of Coherence of Light Beams with Nanoscatterers 

      Saastamoinen, Kimmo; Partanen, Henri; Friberg, Ari T; Setälä, Tero (American Chemical Society (ACS), 2020)
      Highly nonparaxial electromagnetic fields are increasingly met in modern nanophotonics. Their characterization is vital, but the traditional beam-field methods are not applicable. In this work we demonstrate a novel technique ...
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    • Probing University Students' Pre-Knowledge in Quantum Physics with QPCS Survey 

      Asikainen Mervi A (ISER Publications, 2017)
      The study investigated the use of Quantum Physics Conceptual Survey (QPCS) in probing student understanding of quantum physics. Altogether 103 Finnish university students responded to QPCS. The mean scores of the student ...
      info:eu-repo/semantics/article

    • Production of glandular trichomes responds to water stress and temperature in silver birch (Betula pendula) leaves 

      Thitz P; Possen BJHM; Oksanen E; Mehtätalo L; Virjamo V; Vapaavuori E (NRC Research Press, 2017)
      Silver birch (Betula pendula Roth) allocates substantial resources to the production of glandular trichomes. If these trichomes can protect trees from temperature and water stress, their production would be expected to ...
      info:eu-repo/semantics/article

    • Profiling water vapor mixing ratios in Finland by means of a Raman lidar, a satellite and a model 

      Filioglou Maria; Nikandrova Anna; Niemela Sami; Baars Holger; Mielonen Tero; Leskinen Ari; Brus David; Romakkaniemi Sami; Giannakaki Elina; Komppula Mika (Copernicus Publications on behalf of the European Geosciences Union, 2017)
      We present tropospheric water vapor profiles measured with a Raman lidar during three field campaigns held in Finland. Co-located radio soundings are available throughout the period for the calibration of the lidar signals. ...
      info:eu-repo/semantics/article

    • Progress in layered double hydroxides (LDHs): Synthesis and application in adsorption, catalysis and photoreduction 

      Farhan, Ahmad; Khalid, Aman; Maqsood, Nimra; Iftekhar, Sidra; Sharif, Hafiz Muhammad Adeel; Qi, Fei; Sillanpää, Mika; Asif, Muhammad Bilal (Elsevier B.V, 2024)
      Layered double hydroxides (LDHs), also known as anionic clays, have attracted significant attention in energy and environmental applications due to their exceptional physicochemical properties. These materials possess a ...

    • Progress in low dose health risk research: Novel effects and new concepts in low dose radiobiology 

      Averbeck, Dietrich; Salomaa, Sisko; Bouffler, Simon; Ottolenghi, Andrea; Smyth, Vere; Sabatier, Laure (Elsevier BV, 2018)
      People are more often exposed to low as opposed to high doses of ionising radiation (IR). Knowledge on the health risks associated with exposures to ionising radiation above 100 mGy is quite well established, while lower ...
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    • Progress toward Catalytic Micro- and Nanomotors for Biomedical and Environmental Applications 

      Safdar, Muhammad; Khan, Shahid, Ullah; Jänis, Janne (Wiley-Blackwell, 2018)
      Synthetic micro‐ and nanomotors (MNMs) are tiny objects that can autonomously move under the influence of an appropriate source of energy, such as a chemical fuel, magnetic field, ultrasound, or light. Chemically driven ...
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    • Promiscuous specialists: Host specificity patterns among generalist louse flies 

      Lehikoinen, Aleksi; Pohjola, Pekka; Valkama, Jari; Mutanen, Marko; Pohjoismäki, Jaakko LO (Public Library of Science (PLoS), 2021)
      Ectoparasites such as louse flies (Diptera: Hippoboscidae) have tendency for host specialization, which is driven by adaptation to host biology as well as competition avoidance between parasites of the same host. However, ...
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    • Promotion effect of water in catalytic fireplace soot oxidation over silver and platinum 

      Shromova OA; Kinnunen NM; Pakkanen TA; Suvanto M (Royal Society of Chemistry (RSC), 2017)
      Fireplaces are one of the largest sources of soot emissions. One possible approach to reduce wood-based soot emission is to use catalysts that have been designed for fireplace applications. This study compares the activities ...
      info:eu-repo/semantics/article

    • Proposal of a novel Artificial Intelligence Distribution Service platform for healthcare 

      Väänänen, Antti; Haataja, Keijo; Vehviläinen-Julkunen, Katri; Toivanen, Pekka (F1000 Research Ltd, 2021)
      In this paper, we focus on presenting a novel AI-based service platform proposal called AIDI (Artificial Intelligence Distribution Interface for healthcare). AIDI proposal is based on our earlier research work in which we ...
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    • Prospects for Nordic intensive forest management solutions in the Republic of Karelia 

      Senko, Sergei; Kurttila, Mikko; Karjalainen, Timo (Finnish Society of Forest Science, 2018)
      In this study, the prospects for future forest management in Republic of Karelia, Russia were analyzed. Forestry has an important role in the economy of Karelia. However, productivity and profitability in the forestry ...
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    • Protective stainless steel micropillars for enhanced photocatalytic activity of TiO2 nanoparticles during wear 

      Temerov, Filipp; Ammosova, Lena; Haapanen, Janne; Mäkelä, Jyrki M; Suvanto, Mika; Saarinen, Jarkko J (Elsevier BV, 2019)
      Enhanced photocatalytic activity of liquid flame spray (LFS) deposited TiO2 nanoparticles under tribological wear was investigated on metal injection molded (MIM) stainless steel substrates having micropillars as the load ...
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    • Provenance in Systems for Situation Awareness in Environmental Monitoring 

      Stocker, Markus; Rönkkö, Mauno; Kolehmainen, Mikko (Springer Nature, 2015)
      As environmental monitoring systems increasingly automate the collection and processing of environmental sensor network data, the technical components of such systems can automatically obtain and maintain higher levels of ...

    • Psycho-physiological responses of repeated exposure to natural and urban environments 

      Jones, Marc V; Gidlow, Christopher J; Hurst, Gemma; Masterson, Daniel; Smith, Graham; Ellis, Naomi; Clark-Carter, David; Tarvainen, Mika P; Braithwaite, Elizabeth C; Nieuwenhuijsen, Mark (Elsevier BV, 2021)
      The ‘dose’ of nature required for health benefits, and whether repeat visits to the same environment consistently confer health benefits, is unclear. We sought to provide proof of concept for testing this. Data were collected ...
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    • PTR-ToF-MS product ion distributions and humidity-dependence of biogenic volatile organic compounds 

      Kari, Eetu; Miettinen, Pasi; Yli-Pirilä, Pasi; Virtanen, Annele; Faiola, Celia L (Elsevier BV, 2018)
      Quantitative proton-transfer-reaction mass spectrometer (PTR-MS) measurements of ambient volatile organic compounds (VOCs) require proper calibration procedures. In particular, compound product ion distribution and ...
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    • Public Perceptions of MSW Management in Wroclaw City, Poland 

      Zyadin, A; Natarajan, K; Kuittinen, S; Kähkönen, T; Iglinski, B; Dabrowska, M; Trishkin, M; Pappinen, A (Scientific Research Publishing, Inc., 2020)
      Elevating public awareness of waste management at the household level is a cost effective and a win-win social, economic and environmental approach on the table of policymaking. Modern and effective waste management bring ...
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    • Pushing the limits of photoreception in twilight conditions : the rod-like cone retina of the deep-sea pearlsides 

      de Busserolles Fanny; Cortesi Fabio; Vidar Helvik Jon; Davies Wayne I L; Templin Rachel M; Sullivan Robert K P; Michell Craig T; Mountford Jessica K; Collin Shaun P; Irigoien Xabier; Kaartvedt Stein; Marshall Justin (American Association for the Advancement of Science (AAAS), 2017)
      Most vertebrates have a duplex retina comprising two photoreceptor types, rods for dim-light (scotopic) vision and cones for bright-light (photopic) and color vision. However, deep-sea fishes are only active in dim-light ...
      info:eu-repo/semantics/article

    • Puzzle-Mopsi: A location-puzzle game 

      Fränti, Pasi; Kong, Lingyi (AIMS Press, 2023)
      This paper presents a new class of games: location puzzle games. It combines puzzle games with the use of the geographical location. The game class is closely related to location-based games except that no physical movement ...

    • Pyrolysis distillates from tree bark and fibre hemp inhibit the growth of wood-decaying fungi 

      Barbero-López, Aitor; Chibily, Soumaya; Tomppo, Laura; Salami, Ayobami; Ancin-Murguzur, Francisco Javier; Venäläinen, Martti; Lappalainen, Reijo; Haapala, Antti (Elsevier BV, 2019)
      The quest for cleaner wood preservatives is one of the major foci of contemporary wood science. Pyrolysis distillates are potential intermediates to extract large volumes of bioactive chemicals. The aim of this study was ...
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