Browsing Luonnontieteiden, metsätieteiden ja tekniikan tiedekunta by Author "Faculty of Science and Forestry"
Now showing items 1-20 of 45
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A Fibre-Reinforced Poroviscoelastic Model Accurately Describes the Biomechanical Behaviour of the Rat Achilles Tendon
Khayyeri, Hanifeh; Gustafsson, Anna; Heuijerjans, Ashley; Matikainen, Marko K; Marko K., Petro; Eliasson, Pernilla; Aspenberg, Per; Isaksson, Hanna (Public Library of Science (PLoS), 2015)Background Computational models of Achilles tendons can help understanding how healthy tendons are affected by repetitive loading and how the different tissue constituents contribute to the tendon’s biomechanical response. ...info:eu-repo/semantics/article
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A synthesis of cloud condensation nuclei counter (CCNC) measurements within the EUCAARI network
Paramonov, M.; Kerminen, V.-M.; Gysel, M.; Aalto, P. P.; Andreae, M. O.; Asmi, E.; Baltensperger, U.; Bougiatioti, A.; Brus, D.; Frank, G. P.; Good, N.; Gunthe, S. S.; Hao, L.; Irwin, M.; Jaatinen, A.; Jurányi, Z.; King, S. M.; Kortelainen, A.; Kristensson, A. (Copernicus GmbH, 2015)Cloud condensation nuclei counter (CCNC) measurements performed at 14 locations around the world within the European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) framework have been ...info:eu-repo/semantics/article
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Adipose Tissue Dysfunction and Altered Systemic Amino Acid Metabolism Are Associated with Non-Alcoholic Fatty Liver Disease
Cheng, Sulin; Wiklund, Petri; Autio, Reija; Borra, Ronald; Ojanen, Xiaowei; Xu, Leiting; Törmäkangas, Timo; Alen, Markku (Public Library of Science (PLoS), 2015)Background Fatty liver is a major cause of obesity-related morbidity and mortality. The aim of this study was to identify early metabolic alterations associated with liver fat accumulation in 50- to 55-year-old men (n ...info:eu-repo/semantics/article
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Biomechanical evaluation of bone screw fixation with a novel bone cement
Juvonen, Tiina; Nuutinen, Juha-Pekka; Koistinen, Arto P; Kröger, Heikki; Lappalainen, Reijo (Springer Science + Business Media, 2015)Background Bone cement augmentation is commonly used to improve the fixation stability of orthopaedic implants in osteoporotic bone. The aim of this study was to evaluate the effect of novel bone cements on the stability ...info:eu-repo/semantics/article
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Biotic stress accelerates formation of climate-relevant aerosols in boreal forests
Joutsensaari, J.; Yli-Pirilä, P.; Korhonen, H.; Arola, A.; Blande, J. D.; Heijari, J.; Kivimäenpää, M.; Mikkonen, S.; Hao, L.; Miettinen, P.; Lyytikäinen-Saarenmaa, P.; Faiola, C. L.; Laaksonen, A.; Holopainen, J. K. (Copernicus GmbH, 2015)Boreal forests are a major source of climate-relevant biogenic secondary organic aerosols (SOAs) and will be greatly influenced by increasing temperature. Global warming is predicted to not only increase emissions of ...info:eu-repo/semantics/article
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Bisulfate – cluster based atmospheric pressure chemical ionization mass spectrometer for high-sensitivity (< 100 ppqV) detection of atmospheric dimethyl amine: proof-of-concept and first ambient data from boreal forest
Sipilä, M; Sarnela, N; Jokinen, T; Junninen, H; Hakala, J; Rissanen, M.P; Praplan, A; Simon, M; Kürten, A; Bianchi, F; Dommen, F; Curtius, J; Petäjä, T; Worsnop, D.R (Copernicus GmbH, 2015)Atmospheric amines may play a crucial role in formation of new aerosol particles via nucleation with sulfuric acid. Recent studies have revealed that concentrations below 1 pptV can significantly promote nucleation of ...info:eu-repo/semantics/article
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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
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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
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Characteristics of 1 year of observational data of VOCs, NOx and O3 at a suburban site in Guangzhou, China
Zou, Y.; Deng, X. J.; Zhu, D.; Gong, D. C.; Wang, H.; Li, F.; Tan, H. B.; Deng, T.; Mai, B. R.; Liu, X. T.; Wang, B. G. (Copernicus GmbH, 2015)Guangzhou, one of China's megacities, is beset with frequent occurrence of high-concentration ozone events. In this study, online instruments were used to simultaneously monitor ozone, nitrogen oxides (NOx) and volatile ...info:eu-repo/semantics/article
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Characterization and testing of a new environmental chamber
Leskinen, A; Yli-Pirilä, P; Kuuspalo, K; Sippula, O; Jalava, P; Hirvonen, M-R; Jokiniemi, J; Virtanen, A; Komppula, M; M., K. E. J (Copernicus GmbH, 2015). A 29 m3 Teflon chamber, designed for studies on the aging of combustion aerosols, at the University of Eastern Finland is described and characterized. The chamber is part of a research facility, called Ilmari, where ...info:eu-repo/semantics/article
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Chemical characterization of biogenic secondary organic aerosol generated from plant emissions under baseline and stressed conditions: inter- and intra-species variability for six coniferous species
Faiola, C.; Wen, M; VanReken, T. M (Copernicus GmbH, 2015)The largest global source of secondary organic aerosol (SOA) in the atmosphere is derived from the oxidation of biogenic emissions. Plant stressors associated with a changing environment can alter both the quantity and ...info:eu-repo/semantics/article
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Communication: Kinetics of scavenging of small, nucleating clusters: First nucleation theorem and sum rules
Lehtinen, Kari E. J.; Laaksonen, Ari; McGraw, Robert; Malila, Jussi (AIP Publishing, 2015)Despite recent advances in monitoring nucleation from a vapor at close-to-molecular resolution, the identity of the critical cluster, forming the bottleneck for the nucleation process, remains elusive. During past twenty ...info:eu-repo/semantics/article
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Complex nonlinear autonomic nervous system modulation link cardiac autonomic neuropathy and peripheral vascular disease
Khalaf, Kinda; Jelinek, Herbert F; Robinson, Caroline; Cornforth, David J; Tarvainen, Mika P; Al-Aubaidy, Hayder (Frontiers Media SA, 2015)Background: Physiological interactions are abundant within, and between, body systems. These interactions may evolve into discrete states during pathophysiological processes resulting from common mechanisms. An association ...info:eu-repo/semantics/article
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Contribution from biogenic organic compounds to particle growth during the 2010 BEACHON-ROCS campaign in a Colorado temperate needleleaf forest
Zhou, L; Gierens, R; Sogachev, A; Mogensen, D; Ortega, J; Smith, J. N; Harley, P. C; Prenni, A. J; Levin, E. J. T; Turnipseed, A; Rusanen, A; Smolander, S; Guenther, A. B; Kulmala, M; Karl, T; Boy, M (Copernicus GmbH, 2015)New particle formation (NPF) is an important atmospheric phenomenon. During an NPF event, particles first form by nucleation and then grow further in size. The growth step is crucial because it controls the number of ...info:eu-repo/semantics/article
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Direct radiative effect by brown carbon over the Indo-Gangetic Plain
Arola, A; Schuster, G L; Pitkänen, M R A; Dubovik, O; Kokkola, H; Lindfors, A V; Mielonen, T; Raatikainen, T; Romakkaniemi, S; Tripathi, S N; Lihavainen, H (Copernicus GmbH, 2015)The importance of light-absorbing organic aerosols, often called brown carbon (BrC), has become evident in recent years. However, there have been relatively few measurement-based estimates for the direct radiative effect ...info:eu-repo/semantics/article
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Effects of a reduction in the number of short intervals between work shifts on heart rate variability: A prospective field study of female nurses
Järvelin-Pasanen, Susanna; Hakola, Tarja; Lindholm, Harri; Louhevaara, Veikko; Paukkonen, Marja; Puttonen, Sampsa; Ropponen, Annina; Tarvainen, Mika; Pohjonen, Tiina (Sciedu Press, 2015)Abstract Introduction: Shift work is one of the most serious occupational risk factors for health problems such as cardiovascular diseases. Furthermore, shift work disturbs sleep and alertness and impairs recovery from ...info:eu-repo/semantics/article
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Endurance Exercise Improves Heart Rate Complexity in the Presence of Vagal Withdrawal in 1025 Young Adults
Perkins, Steven; Jelinek, Herbert; de Jong, Beverlie; Cornforth, David; Tarvainen, Mika; Al-Aubaidy, Hayder (Computing in Cardiology 2015, 2015)Sudden cardiac death (SCD) has been reported during and following physical activity. SCD may be due to vagal withdrawal and/or sympathetic dominance associated with the exercise occurring at any time during, immediately ...info:eu-repo/semantics/article
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Fabrication of Porous Silicon Based Humidity Sensing Elements on Paper
Jalkanen, Tero; Määttänen, Anni; Mäkilä, Ermei; Tuura, Jaani; Kaasalainen, Martti; Lehto, Vesa-Pekka; Ihalainen, Petri; Peltonen, Jouko; Salonen, Jarno (Hindawi Publishing Corporation, 2015)A roll-to-roll compatible fabrication process of porous silicon (pSi) based sensing elements for a real-time humidity monitoring is described. The sensing elements, consisting of printed interdigitated silver electrodes ...info:eu-repo/semantics/article
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Finite element approximation of the radiative transport equation in a medium with piece-wise constant refractive index
Lehtikangas, O; Tarvainen, T; Kim, A D; Arridge, S R (Elsevier BV, 2015)The radiative transport equation can be used as a light transport model in a medium with scattering particles, such as biological tissues. In the radiative transport equation, the refractive index is assumed to be constant ...info:eu-repo/semantics/article
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Generation of 3D shape, density, cortical thickness and finite element mesh of proximal femur from a DXA image
Väänänen, Sami P.; Grassi, Lorenzo; Flivik, Gunnar; Jurvelin, Jukka S.; Isaksson, Hanna (Elsevier BV, 2015)Areal bone mineral density (aBMD), as measured by dual-energy X-ray absorptiometry (DXA), predicts hip fracture risk only moderately. Simulation of bone mechanics based on DXA imaging of the proximal femur, may help to ...info:eu-repo/semantics/article