Search Results - "Penttilä, T."

Greenhouse gas flux measurements in a forestry-drained peatland indicate a large carbon sink by Lohila, A., Minkkinen, K., Aurela, M., Tuovinen, J.-P., Penttilä, T., Ojanen, P., Laurila, T.

“…Drainage for forestry purposes increases the depth of the oxic peat layer and leads to increased growth of shrubs and trees. Concurrently, the production and…”
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Could continuous cover forestry be an economically and environmentally feasible management option on drained boreal peatlands? by Nieminen, M., Hökkä, H., Laiho, R., Juutinen, A., Ahtikoski, A., Pearson, M., Kojola, S., Sarkkola, S., Launiainen, S., Valkonen, S., Penttilä, T., Lohila, A., Saarinen, M., Haahti, K., Mäkipää, R., Miettinen, J., Ollikainen, M.

“…•Potential for continuous cover forestry (CCF) on drained peatlands was reviewed.•CCF could be a socio-economically feasible alternative to even-aged…”
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Quantifying groundwater fluxes from an aapa mire to a riverside esker formation by Marttila, H., Aurela, M., Büngener, L., Rossi, P. M., Lohila, A., Postila, H., Saari, M., Penttilä, T., Kløve, B.

“…Abstract Water flows in peatland margins is an under-researched topic. This study examines recharge from a peatland to an esker aquifer in an aapa mire complex…”
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Responses of N₂O fluxes to temperature, water table and N deposition in a northern boreal fen by Lohila, A, Aurela, M, Hatakka, J, Pihlatie, M, Minkkinen, K, Penttilä, T, Laurila, T

“…Nitrous oxide (N₂O) fluxes were measured fortnightly to monthly with manual chambers in 2004-2008 and hourly with automatic chambers during the snow-free…”
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Simulation modelling of greenhouse gas balance in continuous-cover forestry of Norway spruce stands on nutrient-rich drained peatlands by Shanin, V., Juutinen, A., Ahtikoski, A., Frolov, P., Chertov, O., Rämö, J., Lehtonen, A., Laiho, R., Mäkiranta, P., Nieminen, M., Laurén, A., Sarkkola, S., Penttilä, T., Ťupek, B., Mäkipää, R.

“…•The carbon balance in drained peatlands at continuous-cover forestry was analyzed.•We simulated the effects of harvesting intensity and water table level…”
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Modelling fine root biomass of boreal tree stands using site and stand variables by Lehtonen, A., Palviainen, M., Ojanen, P., Kalliokoski, T., Nöjd, P., Kukkola, M., Penttilä, T., Mäkipää, R., Leppälammi-Kujansuu, J., Helmisaari, H.-S.

“…•Fine roots are different on drained peatlands compared to those on upland soils.•Nutrient poor soils in north have 5 times more fine roots per basal area than…”
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Comparison of greenhouse gas fluxes and nitrogen budgets from an ombotrophic bog in Scotland and a minerotrophic sedge fen in Finland by Drewer, J, Lohila, A, Aurela, M, Laurila, T, Minkkinen, K, Penttilä, T, Dinsmore, K.J, McKenzie, R.M, Helfter, C, Flechard, C, Sutton, M.A, Skiba, U.M

“…Northern peatlands cover approximately 4% of the global land surface area. Those peatlands will be particularly vulnerable to environmental and climate change…”
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Rotation capacity of fillet weld joints made of high-strength steel by Björk, T., Penttilä, T., Nykänen, T.

“…The capacity of the welded joint can be defined in terms of load-carrying and deformation capacities. For ultra-high-strength structural steels, such as S960…”
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Profitability of alternative management regimes in Scots pine stands on drained peatlands by Kojola, S., Ahtikoski, A., Hökkä, H., Penttilä, T.

“…In drained, forested peatlands, ditch network maintenance (DNM) is often considered necessary for tree growth, but it also constitutes additional management…”
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Greenhouse gas fluxes in a drained peatland forest during spring frost-thaw event by Pihlatie, M. K., Kiese, R., Brüggemann, N., Butterbach-Bahl, K., Kieloaho, A.-J., Laurila, T., Lohila, A., Mammarella, I., Minkkinen, K., Penttilä, T., Schönborn, J., Vesala, T.

“…Fluxes of greenhouse gases (GHG) carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) were measured during a two month campaign at a drained peatland…”
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Comparative analysis of minimal residual disease detection by multiparameter flow cytometry and enhanced ASO RQ-PCR in multiple myeloma by Silvennoinen, R, Lundan, T, Kairisto, V, Pelliniemi, T-T, Putkonen, M, Anttila, P, Huotari, V, Mäntymaa, P, Siitonen, S, Uotila, L, Penttilä, T-L, Juvonen, V, Selander, T, Remes, K

“…Multiparameter flow cytometry (MFC) and allele-specific oligonucleotide real-time quantitative PCR (ASO RQ-PCR) are the two most sensitive methods to detect…”
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Intranasal administration of chlamydial outer protein N (CopN) induces protection against pulmonary Chlamydia pneumoniae infection in a mouse model by Tammiruusu, A, Penttilä, T, Lahesmaa, R, Sarvas, M, Puolakkainen, M, Vuola, J.M

“…Abstract Chlamydia pneumoniae is an intracellular pathogen that grows inside a vacuole, referred to as an inclusion. C. pneumoniae possess a type III secretion…”
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Serum leptin concentrations in women with polycystic ovary syndrome by ROURU, J, ANTTILA, L, KOSKINEN, P, PENTTILÄ, T.-A, IRJALA, K, HUUPPONEN, R, KOULU, M

“…The role of gonadotropins, androgens, and insulin in the regulation of circulating leptin levels is obscure. In order to clarify the relationships of these…”
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Physical solvent extraction of levulinic acid from dilute aqueous solution with 2-methyltetrahydrofuran by Laitinen, Antero T., Penttilä, Karri J. T., Kaunisto, Juha M.

“…The results of the present investigation reveal that 2-methyltetrahydrofuran is a potential solvent for the extraction of levulinic acid from dilute aqueous…”
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Comparative effects of UVA and UVB irradiation on the immune system of fish by Salo, Harri M, Jokinen, E.Ilmari, Markkula, S.Eveliina, Aaltonen, Tuula M, Penttilä, Heikki T

“…Aquatic organisms can be harmed by the current levels of solar ultraviolet radiation. We have recently shown that exposure of fish to UVB irradiation alters…”
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Obesity regulates bioavailable testosterone levels in women with or without polycystic ovary syndrome by Penttilä, T L, Koskinen, P, Penttilä, T A, Anttila, L, Irjala, K

“…To evaluate [1] the effects of levels of sex hormone-binding globulin (SHBG), albumin, and total testosterone on the distribution of testosterone between…”
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Stage-specific expression of the FSH receptor gene in the prepubertal and adult rat seminiferous epithelium by Rannikko, A, Penttilä, T L, Zhang, F P, Toppari, J, Parvinen, M, Huhtaniemi, I

“…Stage-specific expression of the FSH receptor (FSHR) gene in the rat seminiferous epithelium was studied. Using transillumination-assisted microdissection for…”
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Expression of inhibin beta A and beta B, follistatin and activin-A receptor messenger ribonucleic acids in the rat seminiferous epithelium by Kaipia, A, Penttilä, T L, Shimasaki, S, Ling, N, Parvinen, M, Toppari, J

“…The expression of inhibin beta A and beta B subunits, follistatin, and activin-A receptor messenger RNA (mRNAs) in different stages of rat seminiferous…”
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Persistent carbon sink at a boreal drained bog forest by Minkkinen, Kari, Ojanen, Paavo, Penttilä, Timo, Aurela, Mika, Laurila, Tuomas, Tuovinen, Juha-Pekka, Lohila, Annalea

“…Drainage of peatlands is expected to turn these ecosystems into carbon sources to the atmosphere. We measured carbon dynamics of a drained forested peatland in…”
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Optimal use of hormone determinations in the biochemical diagnosis of the polycystic ovary syndrome by Koskinen, P, Penttilä, T A, Anttila, L, Erkkola, R, Irjala, K

“…To investigate, using logistic regression analysis and receiver operator characteristic analysis, the biochemical diagnosis of polycystic ovary syndrome (PCOS)…”
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