Now showing items 156-175 of 1173

    • Can Leaf Water Content Be Estimated Using Multispectral Terrestrial Laser Scanning? A Case Study With Norway Spruce Seedlings 

      Junttila, Samuli; Sugano, Junko; Vastaranta, Mikko; Linnakoski, Riikka; Kaartinen, Harri; Kukko, Antero; Holopainen, Markus; Hyyppä, Hannu; Hyyppä, Juha (Frontiers Media SA, 2018)
      Changing climate is increasing the amount and intensity of forest stress agents, such as drought, pest insects, and pathogens. Leaf water content, measured here in terms of equivalent water thickness (EWT), is an early ...
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    • Capturing the participation and social dimensions of computer-supported collaborative learning through social network analysis: which method and measures matter? 

      Saqr, Mohammed; Viberg, Olga; Vartiainen, Henriikka (Springer Science and Business Media LLC, 2020)
      The increasing use of digital learning tools and platforms in formal and informal learning settings has provided broad access to large amounts of learner data, the analysis of which has been aimed at understanding students’ ...
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    • Carbene metal amide photoemitters: tailoringconformationallyflexible amides for full colorrange emissions including white-emitting OLED 

      Romanov, Alexander S; Jones, Saul TE; Gu, Qinying; Conaghan, Patrick J; Drummond, Bluebell H; Feng, Jiale; Chotard, Florian; Buizza, Leonardo; Foley, Morgan; Linnolahti, Mikko; Credgington, Dan; Bochmann, Manfred (Royal Society of Chemistry (RSC), 2019)
      Conformationally flexible “Carbene–Metal–Amide” (CMA) complexes of copper and gold have been developed based on a combination of sterically hindered cyclic (alkyl)(amino)carbene (CAAC) and 6- and 7-ring heterocyclic amide ...
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    • Carbene-Metal-Amide Polycrystalline Materials Feature Blue Shifted Energy yet Unchanged Kinetics of Emission 

      Feng, Jiale; Taffet, Elliot J; Reponen, Antti-Pekka M; Romanov, Alexander S; Olivier, Yoann; Lemaur, Vincent; Yang, Lupeng; Linnolahti, Mikko; Bochmann, Manfred; Beljonne, David; Credgington, Dan (American Chemical Society (ACS), 2020)
      The nature of carbene–metal–amide (CMA) photoluminescence in the solid state is explored through spectroscopic and quantum-chemical investigations on a representative Au-centered molecule. The crystalline phase offers ...
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    • Carbon Amendments and Remediation of Contaminated Sediments 

      Abel, Sebastian; Nybom, Inna; Akkanen, Jarkko (Springer Nature, 2020)
      Sediments are archives of human activities and other environmental changes in the aquatic environment. In many cases they reflect past and present activities in their catchment. Therefore, elevated concentrations of many ...
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    • Carbon dioxide exchange of a perennial bioenergy crop cultivation on a mineral soil 

      Lind Saara E.; Shurpali Narasinha J; Peltola Olli; Mammarella Ivan; Hyvönen Niina; Maljanen Marja; Räty Mari; Virkajärvi Perttu; Martikainen Pertti J (Copernicus Publications on behalf of the European Geosciences Union, 2016)
      One of the strategies to reduce carbon dioxide (CO2) emissions from the energy sector is to increase the use of renewable energy sources such as bioenergy crops. Bioenergy is not necessarily carbon neutral because of ...
      info:eu-repo/semantics/article

    • Carbon forestry is surprising 

      Pukkala; Timo (Springer Nature, 2018)
      Background Forestry offers possibilities to sequestrate carbon in living biomass, deadwood and forest soil, as well as in products prepared of wood. In addition, the use of wood may reduce carbon emissions from fossil ...
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    • Carbon single-electron point source controlled by Coulomb blockade 

      Kleshch, Victor I; Porshyn, Vitali; Orekhovc, Anton S; Orekhov, Andrey S; Lützenkirchen-Hecht, Dirk; Obraztsov, Alexander N (Elsevier BV, 2020)
      The Coulomb blockade effect is commonly used in solid state electronics for the control of electron flow at the single-particle level. Potentially, it allows the creation of single-electron point sources demanded for ...
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    • Carbon storage change and δ13C transitions of peat columns in a partially forestry-drained boreal bog 

      Nykänen, Hannu; Rissanen, Antti J; Turunen, Jukka; Tahvanainen, Teemu; Simola, Heikki (Springer Science and Business Media LLC, 2019)
      Background and aims In forestry-drained peatlands, drying leads to changes in C cycling which could affect peat δ13C. Furthermore, the δ13C profile of the entire peat column may reveal effects of earlier climatic ...
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    • Cascading use of barley husk ash to produce silicon for composite anodes of Li-ion batteries 

      Kalidas, N; Riikonen, J; Xu, W; Lahtinen, K; Kallio, T; Lehto, VP (Elsevier BV, 2020)
      Silicon is a promising alternative anode material for LIBs because it has ten times higher capacity than the currently used graphite giving the possibility to even double to capacity of the total battery cell. The high ...
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    • Casein-magnesium composite as an intumescent fire retardant coating for wood 

      Uddin, Mezbah; Kiviranta, Kalle; Suvanto, Sari; Alvila, Leila; Leskinen, Jari; Lappalainen, Reijo; Haapala, Antti (Elsevier BV, 2020)
      Fire hazard associated to wood and wood-based products is a clear shortcoming of natural building materials and hence the use of fire retardants is mandated by national building codes. In this study, we have synthesized a ...
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    • Catalytic reactions on magnesium dichloride clusters saturated by titanium tetrachloride 

      Zorve, Peter; Linnolahti, Mikko (Elsevier BV, 2021)
      Magnesium dichloride, titanium tetrachloride, and triethyl aluminum are essential components in the Ziegler-Natta catalysts for olefin polymerization. We report a systematic computational investigation (M06-2X/def-TZVP ...
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    • Cationic contrast-enhanced computed tomography distinguishes between reparative, degenerative and healthy equine articular cartilage 

      Nelson, Brad B; Mäkelä, Janne T A; Lawson, Taylor B; Patwa, Amit N; Snyder, Brian D; McIlwraith, C Wayne; Grinstaff, Mark W; Goodrich, Laurie R; Kawcak, Chris E (Wiley, 2020)
      Cationic contrast‐enhanced computed tomography (CECT) is a quantitative imaging technique that characterizes articular cartilage, though its efficacy in differentiating repair tissue from other disease states is undetermined. ...
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    • CCN activation of fumed silica aerosols mixed with soluble pollutants 

      Dalirian, M.; Keskinen, H.; Ahlm, L.; Ylisirniö, A.; Romakkaniemi, S.; Laaksonen, A.; Virtanen, A.; Riipinen, I. (CCN activation of fumed silica aerosols mixed with soluble pollutants, 2015)
      Particle–water interactions of completely soluble or insoluble particles are fairly well understood but less is known of aerosols consisting of mixtures of soluble and insoluble components. In this study, laboratory ...
      info:eu-repo/semantics/article

    • CdZnSSe crystals synthesized in silicate glass: Structure, cathodoluminescence, band gap, discovery in historical glass, and possible applications in contemporary technology 

      Yuryeva, Tatyana V; Malykhin, Sergey A; Kudryavtsev, Andrey A; Afanasyev, Ilya B; Kadikova, Irina F; Yuryev, Vladimir A (Elsevier BV, 2020)
      The article presents investigations of CdZnSSe crystals synthesized in silicate glass melt. Zn-rich glass manufactured in the 19th century has been found to contain CdZnSSe crystals of hexagonal crystal system exhibiting ...
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    • Challenges of Renewable Forest Fuels for Green Electricity Market 

      Palander Teijo; Kärhä Kalle (Scientific Research Publishing Inc, 2016)
      In this study, strategic electricity market scenarios are considered in a grid of Scandinavia. This multiple-objective decision environment includes the allocation of a number of renewable forest fuel procurement chains ...
      info:eu-repo/semantics/article

    • Changes in dissolved organic matter and microbial activity in runoff waters of boreal mires after restoration 

      Räsänen, Noora; Kankaala, Paula; Tahvanainen, Teemu; Akkanen, Jarkko; Saarnio, Sanna (Springer Nature, 2018)
      A considerable proportion of boreal mires have been drained for soil amelioration purposes. In response to drainage-induced degradation, restoration practices have been implemented in recent decades. Restoration by raising ...
      info:eu-repo/semantics/article

    • Changes in pore water quality after peatland restoration: Assessment of a large¿scale, replicated Before-After-Control-Impact study in Finland 

      Menberu Meseret Walle; Marttila Hannu; Tahvanainen Teemu; Kotiaho Janne S; Hokkanen Reijo; Kløve Bjørn; Ronkanen Anna-Kaisa (Wiley-Blackwell, 2017)
      Drainage is known to affect peatland natural hydrology and water quality, but peatland restoration is considered to ameliorate peatland degradation. Using a replicated BACIPS (Before-After-Control-Impact Paired Series) ...
      info:eu-repo/semantics/article

    • Characterising Bone Material Composition and Structure in the Ovariectomized (OVX) Rat Model of Osteoporosis 

      Mathavan, Neashan; Turunen, Mikael J.; Tägil, Magnus; Isaksson, Hanna (Springer Science + Business Media, 2015)
      The ovariectomized (OVX) rat model is well established in investigations of osteoporosis and osteoporotic therapies. Advent of techniques such as Fourier-transform infrared (FTIR) spectroscopy and small angle X-ray scattering ...
      info:eu-repo/semantics/article

    • Characterising poroelastic materials in the ultrasonic range - A Bayesian approach 

      Niskanen, Matti; Dazel, Olivier; Groby, Jean-Philippe; Duclos, Aroune; Lähivaara, Timo (Elsevier BV, 2019)
      Acoustic fields scattered by poroelastic materials contain key information about the materials’ pore structure and elastic properties. Therefore, such materials are often characterised with inverse methods that use acoustic ...
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