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4201
Forskning om svensk forskarutbildning åren 2000–2020
Published 2022-11-01“…Resultatet visar även att doktoranders (forskar)karriärer respektive forskarutbildningens icke-traditionella kunskapsmiljöer betonas alltmera efter 2015. I diskussionen lyfts hur forskningen följer utbildningspolitikens och forskningspolitikens olika agendor över tid. …”
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4202
Characteristics of T-cell and B-cell immune respoonses to pollen allergens in Bulgarian patients with pollinosis
Published 2015-12-01“…The T-cell reactivity in most patients was directed towards the grass pollen B1, tree pollen I and autumn pollen B5. 70% of the allergic individuals responded to allergens from Lolium perenne, 84% to Dactylis glomerata, 11% to Phleum pratense, 65% to Betula pendula and 70% to Taxus baccata. Elevated serum levels of specific IgE in the allergic patients (p<0.01) were measured against the tree pollen I and autumn pollen, which include widespread deciduous trees (birch, willow, poplar and yew) and Artemisia absinthium, respectively. …”
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4203
Late Holocene vegetation dynamics and monsoonal climatic changes in Jammu, India
Published 2022-06-01“…Since ~865 cal yr BP (CE/AD 1085 onwards) to Present, the broad-leaved taxa, such as Alnus sp., Betula sp., Ulmus sp., Carpinus sp., Corylus sp. and Quercus sp. started expanding and showed their dominance over the conifers, indicating a warm and humid climate in the region with increased monsoon precipitation. …”
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4204
Durability of Wood Exposed to Alternating Climate Test and Natural Weathering
Published 2020-08-01“…The presented study investigated the changes in bending strength (MOR), modulus of elasticity (MOE), and impact bending strength (α) of naturally and artificially weathered oak (<i>Quercus</i> spp.) and birch (<i>Betula pendula</i> Roth) wood. The tests provided comparable results. …”
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4205
Tree species classification using Sentinel-2 imagery and Bayesian inference
Published 2021-08-01“…An overall accuracy of 87% (a Cohen’s kappa of 78.5%) was obtained for four tree species classes: Betula spp., Picea abies, Pinus sylvestris, and Quercus robur. …”
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4206
Eesti sürjametsad; nende tüübid ja indikaatorliigid
Published 2023-02-01“…The hillock forests can be classified into four forest types: 1) Fragaria vesca–Festuca ovina–Pinus sylvestris type, 2) Fragaria vesca–Oxalis acetosella–Pinus sylvestris type, 3) Fragaria vesca–Viola mirabilis–Picea abies–Populus tremula type and, 4) Fragaria vesca–Equisetum pratense–Betula pendula type. There is no need to define the hillock forests as a separate forest site type in practical forest typology, nevertheless recognition of these forests as representing the habitat directive type 9060 is important from the viewpoint of biodiversity maintenance.…”
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4207
Evaluating the Performance of a Forest Succession Model to Predict the Long-Term Dynamics of Tree Species in Mixed Boreal Forests Using Historical Data in Northern Ontario, Canada
Published 2021-08-01“…Mill.), jack pine (<i>Pinus banksiana</i> L.), white spruce (<i>Picea glauca</i> [Moench] Voss), trembling aspen (<i>Populus tremuloides</i> Michx.), white birch (<i>Betula papyrifera</i> Marsh.), northern white cedar (<i>Thuja occidentalis</i> L.), American larch (<i>Larix laricina</i> [Du Roi] K. …”
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4208
Temperature Sensitivity of CO<sub>2</sub> and CH<sub>4</sub> Fluxes from Coarse Woody Debris in Northern Boreal Forests
Published 2021-05-01“…We quantified the CO<sub>2</sub> and CH<sub>4</sub> fluxes from CWD of larch (<i>Larix gmelinii</i> (Rupr.)) and birch (<i>Betula tortuosa</i> Ledeb.) collected in the northern boreal forests of Central Siberia. …”
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4209
Reindeer grazing increases summer albedo by reducing shrub abundance in Arctic tundra
Published 2016-01-01“…We find that when reindeer reduces shrub height and abundance, summer albedo increases in both Betula nana -dominated heath vegetation and Salix glauca -dominated willow depressions. …”
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4210
Tree Species Affect Beetle Diversity on the Common Deciduous Dead Wood in Lithuanian Unmanaged Forests
Published 2023-09-01“…In this study, we investigated the diversity of beetles associated with dead wood in the second decay stage in four protected areas of Lithuania, using trunk-emergence traps on <i>Alnus glutinosa</i> L., Gaertn. (black alder), <i>Betula</i> sp. L. (birch), <i>Fraxinus excelsior</i> L. …”
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4211
Comparison of different forest regeneration methods after windthrow
Published 2014-05-01“…Karst.) and Fagus sylvatica (L.), (2) "seeding" of pioneer (non target) species (Betula pendula Roth) and (3) spontaneous "succession". …”
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4212
The phenological observations as the basis for the formation of the database of phenological spectrums of woody plants
Published 2020-12-01“…There were Mahonia pinnata, M. aquifolia, Betula lenta and B. lutea. On the basis of phenological calendars, phenological spectrums have been constructed. …”
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4213
Birch Wood Surface Characterization after Treatment with Modified Phenol-Formaldehyde Oligomers
Published 2022-02-01“…To obtain the modified PF (M-PF) resins, the PF pre-polymers with average molecular weight (M<sub>w</sub>) from 266 to 884 g/mol were esterified with decanoyl, lauroyl, myristoyl, palmitoyl, and stearoyl chloride in pyridine as the reaction medium. Silver birch (<i>Betula pendula</i>) wood specimens (15 × 70 × 150 mm<sup>3</sup>) were coated with M-PF pre-polymer 5% (w/w) solutions in tetrahydrofuran (THF), and hydrophobic properties of treated birch wood specimens were evaluated using surface contact angle (CA) measurements of water droplets. …”
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4214
Mali Clancy
Published 2021-06-01“…Prostor za pušače uzak je komad betona sa stražnje strane paba koji gleda na rijeku. …”
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4215
Effect of game browsing on natural regeneration of European beech (Fagus sylvatica L.) forests in the Krušné hory Mts. (Czech Republic and Germany)
Published 2021-09-01“…A higher proportion of silver birch (Betula pendula Roth.) and rowan (Sorbus aucuparia L.) was found in the regeneration compared to the mature stands. …”
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4216
Ecosystemic resilience of a temperate post-fire forest under extreme weather conditions
Published 2022-12-01“…Three years after the fire, Populus tremula successfully established itself as the dominant tree species on all plots, with the highest abundance on the plot where the overstorey of the dead pines was left. Betula pendula, Salix caprea, and Pinus sylvestris showed lower abundance, with their proportion increasing with decreasing cover by dead trees. …”
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4217
Assessment of load and quality of logging residues from clear-felling areas in Järvselja: a case study from Southeast Estonia
Published 2020-03-01“…Karst.), silver birch (Betula pendula Roth.) and black alder (Alnus glutinosa L. …”
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4218
Effect of Thermal Treatment of Birch Wood by Saturated Water Vapor on Granulometric Composition of Chips from Sawing and Milling Processes from the Point of View of Its Processing...
Published 2020-10-01“…The goal of this work is to investigate the impact of thermal modification of birch wood with saturated steam on the particle size distribution of the sawing and milling process. Birch wood (Betula pendula Roth) is an excellent source to produce plywood boards. …”
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4219
Utilization of Birch Bark as an Eco-Friendly Filler in Urea-Formaldehyde Adhesives for Plywood Manufacturing
Published 2021-02-01“…The potential of using ground birch (<i>Betula verrucosa</i> Ehrh.) bark as an eco-friendly additive in urea-formaldehyde (UF) adhesives for plywood manufacturing was investigated in this work. …”
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4220
Changes in the Differentiation Program of Birch Cambial Derivatives following Trunk Girdling
Published 2022-07-01“…We girdled the trunks of 17- to 22-year-old silver birch plants (<i>Betula pendula</i> Roth var. <i>pendula</i>) during the active growth period and collected xylem and phloem samples at two height levels (1 cm and 35 cm) above girdle, 10, 20, and 30 days after girdling. …”
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