Článek v periodiku / Article: Poslední příspěvky
Zobrazují se záznamy 61-80 z 187
-
Temporal and spatial variability of phloem structure in Picea abies and Fagus sylvatica and its link to climate
(John Wiley & Sons, Inc., 2024)Using a unique 8-year data set (2010-2017) of phloem data, we studied the effect of temperature and precipitation on the phloem anatomy (conduit area, widths of ring, early and late phloem) and xylem-ring width in two ... -
Effect of different stand densities on xylem and phloem formation in Norway spruce plantations
(Brill, 2023)Preliminary results of an investigation of the thinning effect on Norway spruce tree growth in terms of xylogenesis and phloemogenesis are presented. Three plots were selected where the stand densities were reduced by ... -
Intervention analysis of COVID-19 pandemic impact on timber price in selected markets
(Elsevier Science BV, 2024)Using intervention analysis and time series of roundwood prices from ten European and North American countries, we analyzed the impact of the COVID-19 pandemic on the movement of timber prices. The study material consists ... -
Physical Properties of Silver Fir (Abies alba L.) Wood Cladding Modified by Traditional Japanese Charring Method
(North Carolina State University, 2023)Silver fir (Abies alba L.) wood samples were charred on one surface using an enhanced version of the traditional Japanese Yakisugi method. The 15 charred boards obtained from five charring chimneys were divided into three ... -
Artificial Weathering Resistance and Biological Durability of Surface-Charred Beech Wood Combined with Linseed Oil Coating
(North Carolina State University, 2023)Specimens of European beech wood (Fagus sylvatica L.) charred at 250 oC (4 min), 300 oC (2 min), and 350 oC (1 min) in combination with linseed oil coating were studied. The influence of the surface charring process and ... -
FexIKA method parameters affecting black locust heartwood extraction yield
(North Carolina State University, 2018)The influence of certain adjustable parameters (sample property, temperature, and solvent type) on the advanced fexIKA extraction outputs was determined. Extracts were obtained from black locust (Robinia pseudoacacia L.) ... -
The Protection of Ash Trees Against Ash Dieback by Tree Injections
(Elsevier GmbH, 2023)Ash dieback caused by a non-native pathogenic fungus Hymenoscyphus fraxineus has been decimating populations of European Fraxinus species for over 30 years. Nevertheless, there is still a considerable amount of valuable ... -
Evaluation of parameters influencing the withdrawal strength of oak and beech dowels
(North Carolina State University, 2020)The withdrawal strength of plain dowels with nominal diameter of 8 mm was compared with the spiral dowels manufactured from beech (Fagus sylvatica L.) and oak wood (Quercus robur L.). The test specimens were tested after ... -
Tree-ring width and variation of wood density in Fraxinus excelsior L. and Quercus robur L. growing in floodplain forests
(North Carolina State University, 2018)Oven-dry wood density variations are reported for European ash (Fraxinus excelsior L.) and English oak (Quercus robur L.) trees growing in floodplain mixed forests in South Moravia, Czech Republic. Two sites with different ... -
Is the quality of the non-native Douglas-fir wood produced in the Czech forests comparable to native softwoods?
(North Carolina State University, 2019)Important physical and mechanical properties were evaluated for Douglas-fir wood produced in a non-native environment. The specimens were obtained from 15 healthy co-dominant trees growing in three different sites located ... -
Forest as a source of renewable material to reduce the environmental impact of buildings
(Česká akademie zemědělských věd, 2023)Construction sector has high environmental impact throughout entire life cycle of buildings. One way to reduce the impact is to use building materials with the lowest possible environmental impact - such as wood. The use ... -
Analytical Study for the Determination of the Energy Use Potential of Forest Dendromass in the Czech Republic
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)The European Union's current pressure on the Member States to adopt both the Green Deal and the Fit for 55 package is leading to an accelerated drive to put in place measures to meet the 2030 climate targets. At the same ... -
Mortality reduces overyielding in mixed Scots pine and European beech stands along a precipitation gradient in Europe
(Elsevier Science BV, 2023)Many studies show that mixed species stands can have higher gross growth, or so-called overyielding, compared with monocultures. However, much less is known about mortality in mixed stands. Knowledge is lacking, for example, ... -
Evaluating the quality of surface carbonized woods modified with a contact charring or a gas flame charring technique
(Springer New York, 2023)Surface carbonization, or charring, of wooden exterior cladding boards is a modification method that creates a fully organic barrier layer in resemblance to a coating. The process effectively degrades the wood and transforms ... -
Testing the Production Potential of Paulownia Clon In Vitro 112(R) in the Czech Republic
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)Paulownia is a deciduous fast-growing tree with intensive sprouting ability and is well adapted to various climatic and soil conditions. Its native area extends from the middle to the lower section of the Yangtze River. ... -
Impact of thermal modification on color and chemical changes of African padauk, merbau, mahogany, and iroko wood species
(De Gruyter Open Ltd., 2023)Thermal modification is an environment-friendly technology for improving various wood properties, especially the dimensional stability, decay resistance, and color homogeneity. In this work, four tropical wood species ... -
Digital Approach to Successful Business Plans in Forestry and Related Fields
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)This paper introduces the KABADA (Knowledge Alliance of Business Idea Assessment: Digital Approach) tool, together with the opinions of young people about entrepreneurship, their skills, and their experience with this tool. ... -
Age Estimation of Dracaena cinnabari Balf. f. on Socotra Island: A Direct Method to Determine Its Lifespan
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)Background: Dracaena cinnabari is a monocot species that does not form annual tree rings; thus, its age can only be estimated. This species is threatened by low natural regeneration, with an evident absence of younger ... -
Artificial habitat - a chance for survival of a rare montane dragonfly (Odonata): case study on an alpine emerald (Somatochlora alpestris)
(Springer Netherlands, 2023)The mountain ecosystems of Central Europe are an important natural phenomenon. The character of small isolated islands also predetermines their vulnerability. Typical inhabitant of subalpine and alpine peat bogs, tiny ... -
Impregnation of Norway spruce with low melting-point binary fatty acid as a phase-change material
(CRC Press/Taylor and Francis Group, 2023)Norway spruce was impregnated with a eutectic mixture of capric acid and stearic acid. The binary fatty acid was used as a bio-based phase-change material (PCM) for further applications with wood as a latent heat-storage ...
