Results 61 to 70 of about 78,165 (330)

Factors of selection and quality of wood used for woodcraft in medieval Polish strongholds and early urban centres

Acta Palaeobotanica, 2018
This paper discusses various aspects of the use of wood for crafts in the Middle Ages, based on xylological analyses of 4211 crafted items of everyday use discovered at 62 archaeological sites in Poland.
KATARZYNA CYWA, AGNIESZKA WACNIK, MARIA LITYŃSKA-ZAJĄC   +2 more
doaj   +1 more source

Analysis of linkage in Picea abies [PDF]

Hereditas, 2008
Muona, O., Yazdani, R. and Lindqvist, G. 1987. Analysis of linkage in Picea abies. - Hereditas 106: 31–36. Lund, Sweden. ISSN 0018–0661, Received February 24, 1986 Linkage was studied between seventeen allozyme loci in Picea abies by studying enzyme patterns in macrogametophytes.
OUTI MUONA, REZA YAZDANI, GUN LINDQVIST
openaire   +1 more source

Biodiversity of the proposed landscape reserve of local importance "Obrichky" (Manevichsky district, Volyn region) [PDF]

, 2015
Досліджено природні особливості території Черевахського лісництва кв.12-14 державного підприємства «Маневицький лісгосп». Показано, що найбільшу фітосозологічну цінність пропонованої для заповідання території становить Picea abies на південній межі ...
Kotsun, Borys B., Kotsun, Larysa O., Kuzmishyna, Iryna I., Lisovska, Tetiana P., Sukhomlin, Kateryna B., Коцун, Борис Борисович, Коцун, Лариса Олександрівна, Кузьмішина, Ірина Іванівна, Лісовська, Тетяна Павлівна, Сухомлін, Катерина Борисівна   +9 more
core  

Species identity and spatial scale drive context‑dependent tree diversity effects in a Finnish forest experiment

Oikos, EarlyView.
Tree species diversity is known to affect tree growth and leaf traits, which in turn can influence various ecosystem processes. However, the reported direction of these tree diversity effects is inconsistent, indicating that their outcomes depend strongly on ecological context.
Juri A. Felix, Philip C. Stevenson, Julia Koricheva   +2 more
wiley   +1 more source

Experimental Analysis of Pretensioned CLT-Glulam T-Section Beams

Advances in Materials Science and Engineering, 2018
The bending behavior of T-section beams composed of a glulam web and an upper cross-laminated timber flange was studied. The influence of two fundamental factors on the bending strength and stiffness was considered: the wood species used for the webs and
J. Estévez-Cimadevila, F. Suárez-Riestra, D. Otero-Chans, E. Martín-Gutiérrez   +3 more
doaj   +1 more source

Preliminary results on allozyme diversity and differentiation of Norway spruce (Picea abies (L.) Karst.) in Poland based on plus tree investigations

Acta Societatis Botanicorum Poloniae, 2014
Genetic diversity and genetic differentiation among Polish populations of Norway spruce (Picea abies (L.) Karst.) were studied analyzing allozyme variation at 24 loci.
Andrzej Lewandowski, Jarosław Burczyk, Władysław Chałupka   +2 more
doaj   +1 more source

European Mixed Forests: definition and research perspectives [PDF]

, 2014
peer-reviewedAim of study: We aim at (i) developing a reference definition of mixed forests in order to harmonize comparative research in mixed forests and (ii) briefly review the research perspectives in mixed forests.
Ammer, Christian, Andenmatten, Ernesto, Barbati, Anna, Barreiro, Susana, Brang, Peter, Bratislav, Matovic, Bravo, Felipe, Bravo-Oviedo, Andres, Coll, Lluis, Corona, Piermaria, del Rio, Miren, den Ouden, Jan, Ducey, Mark J., Forrester, David I., Giergiczny, Marek, Jacobsen, Jette B., Kris, Verheyen, Lesinski, Jerzy, Löf, Magnus, Mason, Bill, Metslaid, Marek, Morneau, François, Motiejunaite, Jurga, O’Reilly, Conor, Pach, Maciej, Ponette, Quentin, Pretzsch, Hans, Short, Ian, Skovsgaard, Jens Peter, Soliño, Mario, Spathelf, Peter, Sterba, Hubert, Stojanovic, Dejan, Strelcova, Katarina, Svoboda, Miroslav, Svoboda, Miroslav, von Lüpke, Nikolas, Zlatanov, Tzvetan   +37 more
core   +9 more sources

Tracing change in the public perception of plants: insights from archives and social media in China

PLANTS, PEOPLE, PLANET, EarlyView.
As urbanization accelerates, historic gardens serve as vital cultural treasures that offer spiritual and cultural support to the public. This study proposes an innovative approach that merges historical records from the Qing Dynasty with contemporary social media data to explore changes in public perceptions of these gardens.
Dong Xu, Pei‐yan Wang, Ya‐nan Li, Nan Hu, Yun‐yuan Li   +4 more
wiley   +1 more source

Direct measurement of bidirectional turbulent fluxes of atmospheric cluster ions

Quarterly Journal of the Royal Meteorological Society, EarlyView.
First direct eddy covariance measurements of vertical turbulent fluxes of atmospheric cluster ions are presented. The net turbulent flux was mostly positive for negative cluster ions (net emission of negative ions) and mostly negative for positive cluster ions (net deposition of positive ions).
Luzie Kamecke, Anke C. Nölscher, Andreas Held   +2 more
wiley   +1 more source

Umbelliferone in Needles of Picea abies *

Zeitschrift für Naturforschung C, 1980
Abstract A compound showing blue fluorescence under UV-light was isolated from spruce needles and identified as umbelliferone. Structure analysis was based on UV and mass spectroscopy as well as chromatographic comparison with authentic material. Quantitative evaluation by direct measurement of the fluorescence of the umbelliferone spot
Hermann Esterbauer, Elisabeth Schwarzl, Dieter Grill   +2 more
openaire   +1 more source