Zobrazeno 1 - 10
of 81
pro vyhledávání: '"Jerzy Majka"'
Autor:
Karolina Stefanowska, Magdalena Woźniak, Jerzy Majka, Anna Sip, Lucyna Mrówczyńska, Wojciech Kozak, Renata Dobrucka, Izabela Ratajczak
Publikováno v:
Applied Sciences, Vol 13, Iss 22, p 12351 (2023)
This study addresses challenges faced by the packaging industry in finding suitable natural and biodegradable materials that can replace plastics while preserving the superior quality and freshness of the items contained within. Chitosan, a biodegrad
Externí odkaz:
https://doaj.org/article/bd6145c3e10b408c8c4bbdf85acf09de
Publikováno v:
Drvna Industrija, Vol 73, Iss 3, Pp 299-308 (2022)
The research aimed to obtain empirical data for modeling the initial desorption in reaction wood from the cross-section of the green beech (Fagus sylvatica L.) log. Firstly, we analyzed the chemical composition, macro and microscopic structure of ten
Externí odkaz:
https://doaj.org/article/60fbaa5db2a745abb047873641f2d168
Autor:
Karolina Stefanowska, Magdalena Woźniak, Anna Sip, Lucyna Mrówczyńska, Jerzy Majka, Wojciech Kozak, Renata Dobrucka, Izabela Ratajczak
Publikováno v:
Journal of Functional Biomaterials, Vol 14, Iss 7, p 358 (2023)
Chitosan is a natural and biodegradable polymer with promising potential for biomedical applications. This study concerns the production of chitosan-based materials for future use in the medical industry. Bioactive substances—caffeine and ethanolic
Externí odkaz:
https://doaj.org/article/8bc54ffce3b4405fb01497bd20ab3b41
Publikováno v:
Materials, Vol 16, Iss 5, p 2053 (2023)
Swelling and shrinkage anisotropy affect the susceptibility to an assembly of wooden elements by changing designed clearances or interference fits. This work described the new method to measure mounting holes’ moisture-induced shape instability and
Externí odkaz:
https://doaj.org/article/6557ed9fa1e243eabc7934596d408a19
Publikováno v:
Materials, Vol 15, Iss 11, p 4033 (2022)
Tilia cordata Mill. is a favourite tree used in urban spaces. For this reason, it is important to know its sensitivity to environmental stress, which is particularly burdensome for vegetation in urban spaces. The aim of the study was to investigate t
Externí odkaz:
https://doaj.org/article/fa1bccac052641a99f6c404d015ba305
Publikováno v:
Materials, Vol 15, Iss 8, p 2831 (2022)
Over the last decade, there has been increased interest in applying biomass as a raw material for producing biofuels used for thermochemical conversions. Extensive use of biomass could lead to controversial competition for arable land, water, and foo
Externí odkaz:
https://doaj.org/article/b62367d6887a4b6396a10518dab3a0b0
Autor:
Karolina Stanicka, Renata Dobrucka, Magdalena Woźniak, Anna Sip, Jerzy Majka, Wojciech Kozak, Izabela Ratajczak
Publikováno v:
Polymers, Vol 13, Iss 22, p 3888 (2021)
The aim of the research was to determine the influence of chitosan type and propolis extract concentration on biological and physicochemical properties of chitosan-propolis films in terms of their applicability in food packaging. The films were prepa
Externí odkaz:
https://doaj.org/article/85c76ace7b4746909cfa4af7f184d5e0
Autor:
Marta Pędzik, Tomasz Rogoziński, Jerzy Majka, Kinga Stuper-Szablewska, Petar Antov, Lubos Kristak, Richard Kminiak, Martin Kučerka
Publikováno v:
Applied Sciences, Vol 11, Iss 14, p 6602 (2021)
Wood dust generated during woodworking—particularly from hardwood species during sanding—poses a health and safety hazard to workers in the wood industry. This study aimed to determine the particle-size distribution of selected hardwood species a
Externí odkaz:
https://doaj.org/article/65428573eda54cb0bab69ce0e4d99539
Publikováno v:
Forests, Vol 11, Iss 12, p 1254 (2020)
Low-intensity drying is widely believed to protect waterlogged archeological wood against the adverse effects of dimensional alteration and cracking. However, slow drying generates substantial costs for the conservation process. This study compares t
Externí odkaz:
https://doaj.org/article/e2659bc9d12f498582eb280fd3fbd416
Publikováno v:
BioResources, Vol 11, Iss 2, Pp 5265-5275 (2016)
Thermal modification of spruce wood (Picea abies L.) was conducted at three different temperatures (160, 200, and 240 °C) and treatment times (1, 3, and 5 h). The cyclic sorption experiments were performed for relative humidity changes of 30 to 85%.
Externí odkaz:
https://doaj.org/article/9724951dc3504c6dbcadb13fb09dc44b