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Alternative UV Sensors Based on Color-Changeable Pigments

Advances in Chemical Engineering and Science 2011年第4期1卷 224-230页

作者： Martina vikova michal vik 不详

Photochromism is a chemical process in which a compound undergoes a reversible change between two states having separate absorption spectra, i.e. different color [1]. In our previous work we have published some solutions of problems of measuring photochromic textile sample by standard commercial spectrophotometric systems [2]. Main problem with measurement of kinetic behavior of photochromic pigments by standard spectrophotometer is relatively long time period between individual measurements (5 s) and impossibility of measuring whole color change during exposure without interruption of illumination of sample during measurement. It means, standard commercial spectrophotometers enable off-line measurement of kinetic behavior during exposure period and quasi on-line measurement during reversion period. Based on this problem, it is only possible to obtain precise data during reversion—decay process and growth process (exposure) is affected by high variability of data. Following this knowledge, we developed original experimenttal system with short time scanning of color change of photochromic samples during growth and decay period of color change. In this study it is presented new view on the relationship between intensity of UV-A radiation and color change half-life t1/2. Via this relation, it is demonstrated the possibility of the flexible textile-based sensors construction in the area of the radiation intensity identification.

关键词： UV Radiation Photochromism Spectrophotometer Textile Sensor

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Douglas-fi r(Pseudotsuga menziesii(Mirb.)Franco)in Europe:an overview of management practices

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Journal of Forestry Research 2023年第4期34卷 871-888页

作者： Valeriu-Norocel Nicolescu William LMason Jean-Charles Bastien Torsten Vor Krasimira Petkova Vilém Podrázský Martina Đodan Sanja Perić Nicola La Porta Robert Brus Siniša Andrašev Martin Slávik Juraj Modranský michal Pástor Károly Rédei Branislav Cvjetkovic Ahmet Sivacioğlu Vasyl Lavnyy Cornelia Buzatu-Goanță Gheorghe Mihăilescu Faculty of Silviculture and Forest Engineering Transylvania University of BrasovBrasovRomania Forest Research Northern Research StationRoslinMidlothianUK INRAe Centre Val de Loire ArdonOrléansFrance Faculty of Forest Sciences and Forest Ecology University Georg-AugustGöttingenGermany University of Forestry Sofi aBulgaria Department of Silviculture Faculty of Forestry and Wood SciencesCzech University of Life SciencesPragueCzech Republic Croatian Forest Research Institute JastrebarskoCroatia Foundation Edmund Mach San Michele all’AdigeItaly Biotechnical Faculty University of LjubljanaLjubljanaSlovenia Institute of Lowland Forestry and Environment Novi SadSerbia National Forest Centre Forest Research InstituteZvolenSlovakia Faculty of Ecology and Environmental Sciences Technical University in ZvolenZvolenSlovakia Faculty of Agricultural and Food Sciences and Environmental Management University of DebrecenDebrecenHungary Faculty of Forestry University of Banja LukaBanja LukaBosnia and Herzegovina Department of Silviculture Faculty of ForestryKastamonu UniversityKastamonuTurkey Department of Silviculture Ukrainian National Forestry UniversityLvivUkraine Faculty of Horticulture and Forestry Banat’s University of Agricultural Sciences and Veterinary MedicineTimisoaraRomania Vâlcea County Branch National Forest Administration-ROMSILVARâmnicu-VâlceaRomania

Douglas-fir(Pseudotsuga menziesii(Mirb.)Franco),one of the most commercially important tree species in western North America and one of the most valuable timber trees worldwide,was introduced to Europe in *** became a major species for aff orestation in Western Europe after WWII,currently grows in 35 countries on over 0.83 million ha and is one of the most widespread nonnative tree species across the continent.A lower sensitivity to drought makes Douglas-fi r a potential alternative to the more drought-sensitive Norway spruce so its importance in Europe is expected to increase in the *** is one of the fastest growing conifer species cultivated in Europe,with the largest reported dimensions of 2.3 m in diameter and 67.5 m in *** stands have high productivity(up to 20 m 3 ha−1 a−1)and production(over 1000 m 3 ha−1).The species is generally regenerated by planting(initial stocking density from less than 1000 seedlings ha−1 to more than 4000 ha−1),using seedlings of European provenance derived from seed orchards or certifi ed seed *** the range of end-uses of its wood is very wide,the rotation period of Douglas-fi r is highly variable and ranges between 40 and 120 *** the production of large-sized,knotfree timber is targeted,thinnings are always coupled with pruning up to 6 *** is an increasing interest in growing Douglas-fi r in mixtures and managing stands through close-to-nature silviculture,but the species’intermediate shade tolerance means that it is best managed through group selection or shelterwood systems.

关键词： Douglas-fi r Ecological requirements Growth and yield Timber Climate change

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Correction to:Douglas-fir(Pseudotsuga menziesii(Mirb.)Franco)in Europe:an overview of management practices

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林业研究:英文版 2023年第6期34卷 2091-2091页

作者： Nicolescu, Valeriu-Norocel Mason, William L. Bastien, Jean-Charles Vor, Torsten Petkova, Krasimira Podrázský, Vilém Đodan, Martina Perić, Sanja La Porta, Nicola Brus, Robert Andrašev, Siniša Slávik, Martin Modranský, Juraj Pástor, michal Rédei, Károly Cvjetkovic, Branislav Sivacioğlu, Ahmet Lavnyy, Vasyl Buzatu-Goanță, Cornelia Mihăilescu, Gheorghe Faculty of Silviculture and Forest Engineering Transylvania University of Brasov Brasov Romania Forest Research Northern Research Station Midlothian UK INRAe Centre Val de Loire Ardon Orléans France Faculty of Forest Sciences and Forest Ecology University Georg-August Göttingen Germany University of Forestry Sofia Bulgaria Department of Silviculture Faculty of Forestry and Wood Sciences Czech University of Life Sciences Prague Czech Republic Croatian Forest Research Institute Jastrebarsko Croatia Foundation Edmund Mach San Michele all’Adige Italy Biotechnical Faculty University of Ljubljana Ljubljana Slovenia Institute of Lowland Forestry and Environment Novi Sad Serbia National Forest Centre Forest Research Institute Zvolen Slovakia Faculty of Ecology and Environmental Sciences Technical University in Zvolen Zvolen Slovakia Faculty of Agricultural and Food Sciences and Environmental Management University of Debrecen Debrecen Hungary Faculty of Forestry University of Banja Luka Banja Luka Bosnia and Herzegovina Department of Silviculture Faculty of Forestry Kastamonu University Kastamonu Turkey Department of Silviculture Ukrainian National Forestry University Lviv Ukraine Faculty of Horticulture and Forestry Banat’s University of Agricultural Sciences and Veterinary Medicine Timisoara Romania Vâlcea County Branch National Forest Administration-ROMSILVA Râmnicu-Vâlcea Romania

During production process,the superscript numbers were inadvertently normalised and has been published online with *** superscript has been updated in the abstract section,Table 2,Table 3,Table 4 and Table *** origina... 详细信息

关键词： fir corrected management

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