Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Laszlo Tolvaj"'
Autor:
K.M. Faridul Hasan, Simang Champramary, KM Noman Al Hasan, Boris Indic, Taosif Ahmed, Md Nahid Pervez, Péter György Horváth, Miklós Bak, Borza Sándor, Tamás Hofmann, Laszlo Tolvaj, Adrienn Horváth, Zsófia Kóczán, György Sipos, Tibor Alpár, László Bejó
Publikováno v:
Results in Engineering, Vol 19, Iss , Pp 101244- (2023)
This study presents a novel approach for the production of cellulosic fibers from scots pine wood and their subsequent surface modification with greenly synthesized silver nanoparticles (AgNPs), leading to remarkable color effects and improved functi
Externí odkaz:
https://doaj.org/article/e800fc8b4c964e8ebd91ccbd9e1fed1d
Publikováno v:
BioResources, Vol 11, Iss 1, Pp 296-305 (2015)
Spruce and beech samples were irradiated by UV light in humid (100% air humidity) and dry conditions to clarify the effects of vapor on photodegradation. UV-irradiated samples were also soaked in distilled water for comparison. The color change and t
Externí odkaz:
https://doaj.org/article/5040a16547ef4b0da3183d1184965ff7
Publikováno v:
BioResources, Vol 9, Iss 4, Pp 6644-6651 (2014)
Dry thermal treatments of wood samples were carried out at 160 and 200 °C. After each treatment, the samples were irradiated using a strong UV emitter mercury lamp, and the colour change was then evaluated. For control, untreated samples were also i
Externí odkaz:
https://doaj.org/article/ed34357c90204750b8b41e4ebc88582f
Publikováno v:
BioResources, Vol 7, Iss 3, Pp 2799-2808 (2012)
The heat treatment of softwood (i.e. spruce, pine, fir, and larch) may result in significant colour changes. During this study Scots pine and spruce samples were steamed and analysed for their altered hue and lightness. Treatments included: 0 to 22 d
Externí odkaz:
https://doaj.org/article/128e7bc5e45842b697554e41037b6e66
Autor:
Laszlo Tolvaj
Publikováno v:
Wood Science and Technology. 56:1819-1834
This paper deals with the difficulties of infrared spectroscopy measurement and suggests ways of dealing with them. Many problems appear when applying ATR (attenuated total reflection) measurement for determining the absorbance spectrum of wood, espe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4def00a5cbf9183987d59696fe7a867b
https://doi.org/10.1007/s00226-022-01425-7
https://doi.org/10.1007/s00226-022-01425-7
Chemical changes of steamed timber during short-term photodegradation monitored by FTIR spectroscopy
Publikováno v:
European Journal of Wood and Wood Products. 80:841-849
Black locust (Robinia pseudoacacia L.), beech (Fagus sylvatica L.), poplar (Populus x euramericana cv. pannonia) and spruce (Picea abies Karst.) wood samples were treated in saturated steam at 100, 110 and 120 °C for 2 days. Steamed and unsteamed (c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5664576de562eb7c76b7116f09b66790
https://doi.org/10.1007/s00107-022-01814-6
https://doi.org/10.1007/s00107-022-01814-6
Publikováno v:
BioResources. 14:8250-8256
Plantation poplar (Populus x euramericana cv. Pannonia) wood samples were steamed at 100 °C, 110 °C, and 120 °C and then irradiated by a strong UV emitter mercury lamp to test their colour stability. The colour change was evaluated and presented i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a3326412b469cba3f1aa8e958aeadc4
https://doi.org/10.15376/biores.14.4.8250-8256
https://doi.org/10.15376/biores.14.4.8250-8256
Autor:
László Tolvaj
This book describes all optical properties of wooden materials, including definitions and measurement methods of optical parameters such as absorbance, diffuse and specular reflectance, colour and gloss. Basic knowledge regarding the reflectance meas
The purpose of this monograph is to characterize and describe the quality of machined wood surfaces, whereas particular attention is given to the utility and to aesthetical values in product design. The approach employed by the authors involves an in
Publikováno v:
Forests, Vol 12, Iss 7, p 833 (2021)
The goal of this research was the systematic study and comparison of the divided individual effects of UV light irradiation and water leaching during artificial weathering. Spruce (Picea abies Karst.) and Scots pine (Pinus sylvestris L.) samples were
Externí odkaz:
https://doaj.org/article/0f8eea8bb0f7487eb94950808ab39fb9