6 research outputs found
ĂšhelnĂky s prolisem ve spojĂch dĹ™evÄ›nĂ˝ch prvkĹŻ
The paper presents load-bearing capacity calculation methods for timber elements connections by angle brackets with a rib. As connectors, annular ring nails were used. Paper brings direct comparison of results from full-scale tests, analytical calculations and numerical simulations of connections under the external load using two different versions of brackets.KUKLĂŤK, P., et al. ĂšhelnĂky s prolisem ve spojĂch dĹ™evÄ›nĂ˝ch prvkĹŻ. In: MATUĹ KA, T., ed. Sympozium Energeticky efektivnĂ budovy 2015. Sympozium Energeticky efektivnĂ budovy 2015. BuštÄ›hrad, 15.10.2015. Praha: SpoleÄŤnost pro techniku prostĹ™edĂ. 2015, s. 149-154. 1. vydánĂ. ISBN 978-80-02-02615-0</p
NavrhovánĂ spojĹŻ dĹ™evÄ›nĂ˝ch prvkĹŻ za pomoci kovánĂ
ÄŚlánek je zaměřen na Ĺ™ešenĂ problematiky spojĹŻ dĹ™evÄ›nĂ˝ch prvkĹŻ za pomoci tenkostÄ›nnĂ˝ch ocelovĂ˝ch elementĹŻ aneb kovánĂ, kde jako spojovacĂ prvek jsou pouĹľity kolĂkovĂ© spojovacĂ prostĹ™edky.SEJKOT, P., et al. NavrhovánĂ spojĹŻ dĹ™evÄ›nĂ˝ch prvkĹŻ za pomoci kovánĂ. In: DĹ™evostavby 2016. DĹ™evostavby 2016. VolynÄ›, 23.03.2016 - 24.03.2016. VolynÄ›: VOĹ VolynÄ›. 2016, s. 187-189. ISBN 978-80-86837-84-0.Ej belagd 180425</p
(Heisenberg-)Weyl Algebras, Segal-Bargmann Transform and Representations of Poincaré Groups
Study of Interactions between Titanium Dioxide Coating and Wood Cell Wall Ultrastructure
Titanium dioxide (TiO2) is used as a UV light absorber to protect wood matter from photodegradation. In this paper, interactions between wood and TiO2 coating are studied, and the efficiency of the coating is evaluated. For the experiments, two wood species were chosen: beech (Fagus sylvatica) and pine (Pinus sylvestris). Molecular and physical modifications in coated and uncoated wood exposed to UV radiation were investigated with Fourier transform infrared spectroscopy with attenuated total reflectance (FTIR-ATR) and transmission electron microscopy (TEM). UV-VIS spectroscopy was used to describe the absorption of UV light by the TiO2 planar particles chosen for the experiment. It was demonstrated that TiO2 coating protects wood against photodegradation to a limited extent. TEM micrographs showed fissures in the wood matter around clusters of TiO2 particles in beech wood