Results 51 to 60 of about 72,006 (264)

Occurrence, morphology and growth of understory saplings in Swedish forests [PDF]

, 2004
Growing demands for a multipurpose forestry leads to increased use of silvicultural systems that avoid clear-cutting. Regeneration in such systems is based on establishment and ingrowth of new seedlings under a more or less closed canopy.
Wikberg, Per-Erik
core  

Char Layer Thickness Evolution During Structural Timber Fire Experiment and Final Density Profile

Fire and Materials, EarlyView.
ABSTRACT This paper evaluates several non‐destructive experimental methods for determining the char layer thickness and its density profile in structural timber samples exposed to standard ISO 834 fire curve experiments. Microwave echo pulse, ultrasonic echo pulse, X‐ray computed tomography, and resistance drilling were evaluated.
Fernando Pérez Pérez, Kiarash Tajbakhsh, Joachim Schmid, Robert Zboray, Andrea Frangi   +4 more
wiley   +1 more source

Simultaneous Real-Time Measurement of Isoprene and 2-Methyl-3-Buten-2-ol Emissions From Trees Using SIFT-MS

Frontiers in Plant Science, 2020
The C5 hemiterpenes isoprene and 2-methyl-3-buten-2-ol (MBO) are important biogenic volatiles emitted from terrestrial vegetation. Isoprene is emitted from many plant groups, especially trees such as Populus, while emission of MBO is restricted to ...
Ann-Sophie Lehnert, Ann-Sophie Lehnert, Erica Perreca, Jonathan Gershenzon, Georg Pohnert, Susan E. Trumbore   +5 more
doaj   +1 more source

The Douglas-Fir Genome Sequence Reveals Specialization of the Photosynthetic Apparatus in Pinaceae. [PDF]

, 2017
A reference genome sequence for Pseudotsuga menziesii var. menziesii (Mirb.) Franco (Coastal Douglas-fir) is reported, thus providing a reference sequence for a third genus of the family Pinaceae.
Cardeno, Charis, Casola, Claudio, Crepeau, Marc W, Cronn, Richard, Gonzalez-Ibeas, Daniel, Holt, Carson, Koralewski, Tomasz E, Langley, Charles H, McGuire, Patrick E, Neale, David B, Paul, Robin, Pertea, Geo M, Puiu, Daniela, Salzberg, Steven L, Sezen, U Uzay, Stevens, Kristian A, Wegrzyn, Jill L, Wheeler, Nicholas C, Yandell, Mark, Yorke, James A, Zaman, Sumaira, Zimin, Aleksey V   +21 more
core   +2 more sources

Finalisation of the European Approach to Assess the Fire Performance of Facades—Brief Information on the Outcome of the Project

Fire and Materials, EarlyView.
ABSTRACT This research was conducted within the framework of project SI2.825082, funded by the European Commission—DG GROW. The project's objective was to finalise a European approach for assessing the fire performance of façades under medium and large fire exposure conditions.
Péter Tóth, Anja Hofmann‐Böllinghaus, Fabien Dumont, Johan Anderson, Johan Sjöström, Mikael Bergius, Roman Chiva, Octavian Lalu   +7 more
wiley   +1 more source

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

Reconstructing post‐crisis recovery in the hinterlands of Constantinople: A high‐resolution first‐millennium CE pollen record from Lake Yeniçağa (NW Türkiye)

Journal of Quaternary Science, EarlyView.
ABSTRACT Facing a novel plague pandemic, military invasions, and political–economic transformations, societies of the eastern Roman (Byzantine) empire had to adapt to a variety of pressures and new ways of exploiting their natural environments during the mid‐1st millennium CE.
Cristiano Vignola, Mustafa Doğan, Warren Eastwood, John Haldon, Alessia Masi, Neil Roberts, Çetin Şenkul, Adam Izdebski   +7 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