Results 11 to 20 of about 87,832 (311)

Analysis spatial distribution trees in forest stands [PDF]

open access: yesGlasnik Šumarskog Fakulteta: Univerzitet u Beogradu, 2006
The analyses of the horizontal distribution of trees have not been used in the research of stand structure in Serbia’s forestry to date. Taking into account the high economic and ecological applicability of such information, this paper deals with the ...
Stajić Branko, Vučković Milivoj
doaj   +1 more source

On the Vectorization of FIR Filterbanks [PDF]

open access: yesEURASIP Journal on Advances in Signal Processing, 2006
Cet article présente une technique de vectorisation pour mettre en œuvre des bancs DE FILTRES FIR. Le mot vectorisation, dans le cadre de ce travail, désigne une stratégie dans laquelle toutes les opérations itératives sont remplacées par des opérations vectorielles et matricielles équivalentes.
Jayme Garcia Arnal Barbedo, Amauri Lopes
openaire   +3 more sources

Phylogeny, Seed Trait, and Ecological Correlates of Seed Germination at the Community Level in a Degraded Sandy Grassland

open access: yesFrontiers in Plant Science, 2016
Seed germination strongly affects plant population growth and persistence, and it can be dramatically influenced by phylogeny, seed traits, and ecological factors.
Zhengning Wang   +9 more
doaj   +1 more source

Implementasi Metode Windowing Rectangular, Hamming, Hann, dan Kaiser pada Filter Finite Impulse Response (FIR) menggunakan Raspberry Pi

open access: yesJurnal Jaringan Telekomunikasi, 2020
Penggunaan filter digital sangat dibutuhkan oleh sistem-sistem elektronika, seperti dalam hal pengolahan sinyal maupun audio. Kegunaan filter digital adalah untuk menyaring frekuensi serta memodifikasi spektrum frekuensi pada suatu sinyal sehingga ...
Binariesya Maulydia   +2 more
doaj   +1 more source

Third-Generation Calibrations for MeerKAT Observation

open access: yesGalaxies, 2021
Superclusters and galaxy clusters offer a wide range of astrophysical science topics with regards to studying the evolution and distribution of galaxies, intra-cluster magnetization mediums, cosmic ray accelerations and large scale diffuse radio sources ...
Viral Parekh   +4 more
doaj   +1 more source

Xylem cavitation in roots and stems of Douglas-fir and white fir [PDF]

open access: yesTree Physiology, 1997
Roots of hardwoods have been shown to be more vulnerable to xylem cavitation than stems. This study examined whether this pattern is also observed in a conifer species. Vulnerability to cavitation was determined from the pressure required to inject air into the vascular system of hydrated roots and stems, and reduce hydraulic conductance of the xylem ...
J S, Sperry, T, Ikeda
openaire   +2 more sources

Aluminum-Induced Alterations to the Cell Wall and Antioxidant Enzymes Involved in the Regulation of the Aluminum Tolerance of Chinese Fir (Cunninghamia lanceolata)

open access: yesFrontiers in Plant Science, 2022
Chinese fir (Cunninghamia lanceolata), which is an important coniferous tree species in China, is mainly planted in acidic soils with toxic aluminum (Al) levels.
Shanshan Xu   +15 more
doaj   +1 more source

Effect of Freezing Temperature on Impact Bending Strength and Shore-D Hardness of Some Wood Species

open access: yesBioResources, 2022
Wood is exposed to variable environmental conditions during its use. Low temperature is one of the most important environmental factors affecting the behavior of wood in use.
Osman Emre Özkan
doaj   +2 more sources

The Effect of Short Time Thermal Treatment on Swelling of Field Maple (Acer campestre L.) and Fir (Abies alba Mill.)

open access: yesActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 2020
From the immemorial time wood is highly abundant and well-performing material. Further one due to practical use the wood heat treatment, as a process for improving its properties has been enhanced in the recent tim.
Holta Çota   +5 more
doaj   +1 more source

Hepatic lipid signatures of little brown bats (Myotis lucifugus) and big brown bats (Eptesicus fuscus) at early stages of white-nose syndrome

open access: yesScientific Reports, 2021
White-nose syndrome (WNS) is an emergent wildlife fungal disease of cave-dwelling, hibernating bats that has led to unprecedented mortalities throughout North America.
Evan L. Pannkuk   +7 more
doaj   +1 more source

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