Les je v krožnem biogospodarstvu prepoznan kot obetavna surovina, saj ima sposobnost skladiščenja ogljika, ki pa je pogojena z življenjsko dobo izdelka. Podaljšanje življenjske dobe lesa lahko ...dosežemo z ustrezno zaščito, pogosto z uporabo kemikalij, ki so lahko okolju in ljudem nevarne. Mineralizacija lesa s hidroksiapatitom predstavlja potencial za okolju prijazno zaščito lesa. Na primeru Plečnikove parkovne klopce, mineralizirane s hidroksiapatitom, sta bili izvedeni LCA in LCC analizi. Analiza LCA je temeljila na standardih EN ISO 14040 in EN ISO 14044, analiza LCC je bila prilagojena po vmesniku Evropske komisije za javna naročila. Pri primerjavi mineraliziranega lesa z življenjsko dobo 16 oz. 24 let z referenčnim (nemineraliziranim) lesom so rezultati pokazali, da je mineraliziran les z življenjsko dobo 24 let okolju najprijaznejša in hkrati najcenejša izbira. Največje negativne vplive na okolje je predstavljal mineraliziran les z življenjsko dobo 16 let, najdražja alternativa je bil referenčni les.
Global challenges, including climate change, land and ecosystem degradation, and a growing population have direct or indirect impact on natural resources and are forcing people to seek new ways of ...production and consumption that respect the ecological limits of our planet. To meet the challenges, the 2030 Agenda for Sustainable Development was adopted by 193 countries at the United Nations Summit in September 2015. The forest-wood chain has also been identified as closely linked to sustainable development and the Sustainable Development Goals (SDGs). Especially in countries with high forest cover, such as Slovenia, forest-wood chain is recognized in policy documents as key element for achieving the SDGs. The importance of the SDGs is not only recognized in national legislation, but also in relation to higher education and research institutions. With the aim to investigate how well higher education teachers and students are familiar with SDGs and whether they consider them important for the forestry and wood industry and if high education teachers and researchers integrate the SDGs into educational programs and research, survey was conducted with the employees (n=61) and students (n=185) of the University of Ljubljana, Biotechnical Faculty, Department of Forestry and Renewable Forest Resources and Department of Wood Science and Technology. The results show that both employees and students of the Department of Forestry and Renewable Forest Resources as well as employees and students of the Department of Wood Science are familiar with SDGs. All the respondents find SDGs important for the forestry and wood industry. All the participants especially emphasized SDG 15 - Life on land. The results also showed that, in the future, employees of both departments plan to integrate more SDGs into their educational and research process. Finally, it was concluded that educational and research institutions and integration of SDGs into their educational and research process could be an important step towards sustainability and achieving goals of 2030 Agenda for Sustainable Development. Students who will work in the forestry and wood industry sectors in the future could integrate and promote more sustainable practises in the sectors if they have sufficient knowledge of the SDGs and high perception of sustainability.
Globalni izazovi kao što su klimatske promjene, uništavanje zemljišta i ekosustava te sve veći broj stanovnika izravno ili neizravno utječu na prirodne resurse i potiču ljude da traže nove načine proizvodnje i potrošnje koji poštuju ekološka ograničenja našeg planeta. Kako bi odgovorile na te izazove, 193 zemlje usvojile su na skupu Ujedinjenih naroda u rujnu 2015. Agendu održivog razvoja do 2030. Lanac šuma – drvo također je prepoznat kao usko povezan s održivim razvojem i ciljevima održivog razvoja (SDG). Osobito je u zemljama koje imaju veliku pokrivenost šumama, poput Slovenije, lanac šuma – drvo u političkim dokumentima prepoznat kao ključni element za postizanje ciljeva održivog razvoja. Važnost ciljeva održivog razvoja nije naglašena samo u nacionalnom zakonodavstvu već i u obrazovnim i istraživačkim institucijama. Cilj istraživanja bio je utvrditi koliko su nastavnici i studenti u visokom obrazovanju upoznati s ciljevima održivog razvoja, smatraju li ih važnima za šumarstvo i drvnu industriju te integriraju li nastavnici i znanstvenici ciljeve održivog razvoja u obrazovne programe i istraživanja. Na Biotehničkom fakultetu Sveučilišta u Ljubljani, na Odsjeku za šumarstvo i obnovljive šumske resurse te na Odsjeku za znanost o drvu i drvnu tehnologiju, provedena je anketa sa zaposlenicima (n = 61) i studentima (n = 185). Rezultati pokazuju da su zaposlenici i studenti obaju odsjeka upoznati s ciljevima održivog razvoja. Svi ispitanici smatraju da su ciljevi održivog razvoja važni za šumarstvo i drvnu industriju. Svi su posebno istaknuli cilj održivog razvoja 15 – Život na kopnu. Rezultati su također pokazali da zaposlenici obaju odsjeka planiraju u budućnosti integrirati više ciljeva održivog razvoja u svoj obrazovni i istraživački proces. Zaključili smo da bi integracija ciljeva održivog razvoja u obrazovni i istraživački proces mogla biti važan korak prema održivosti i postizanju ciljeva Agende održivog razvoja do 2030. Studenti koji će u budućnosti raditi u sektoru šumarstva i drvne industrije mogli bi integrirati i promicati održive prakse u tim sektorima ako imaju dovoljno znanja o ciljevima održivog razvoja i visoku svijest o održivom razvoju.
Analiza življenjskega cikla (LCA) je metoda ocene vplivov na okolje, ki jih ima nek izdelek ali storitev v času celotnega cikla – od pridobivanja surovin do odlaganja na deponijo. LCA sestavljajo ...štiri faze, ki se med seboj prepletajo in so standardizirane s standardoma ISO 14040:2006 in ISO 14044:2006. Zaradi vsestranske uporabnosti in celostnosti pri sprejemanju strateških odločitev uporaba LCA hitro narašča. Porast uporabe se opaža tudi v lesnopredelovalnem sektorju.
Analiza življenjskega cikla (LCA) je metoda ocene vplivov na okolje, ki jih ima nek izdelek ali storitev v času celotnega cikla – od pridobivanja surovin do odlaganja na deponijo. LCA sestavljajo ...štiri faze, ki se med seboj prepletajo in so standardizirane s standardoma ISO 14040:2006 in ISO 14044:2006. Zaradi vsestranske uporabnosti in celostnosti pri sprejemanju strateških odločitev uporaba LCA hitro narašča. Porast uporabe se opaža tudi v lesnopredelovalnem sektorju.
The work analyses the optimisation of the manufacturing process of an artistic wooden product (mirror frame) with a 3-axis CNC machine. The 3D model was first made in ArtCAM, from where the STL file ...was later uploaded to SolidWorks. The parameters for the HSR (high-speed roughing), and HSM (high-speed machining) operations were determined in SolidCAM. The findings show that a combination of operations from HSR and HSM are the best choice, considering the shape of the model and the capabilities of the machine, as the best ratio between the quality of the surface and the time needed for the operation is provided by these. Operations differ with regard to the tool path and parameters that can be adjusted. The operations were compared and the best results are achieved when the HSR operations “Contour Roughing” and then “Rest Roughing” are used and when the HSM operation “3D Constant Step Over” is used, where the machining time amounted 4 hours and 1 minute. Finally the G code was made for our product.
The work analyses the optimisation of the manufacturing process of an artistic wooden product (mirror frame) with a 3-axis CNC machine. The 3D model was first made in ArtCAM, from where the STL file ...was later uploaded to SolidWorks. The parameters for the HSR (high-speed roughing), and HSM (high-speed machining) operations were determined in SolidCAM. The findings show that a combination of operations from HSR and HSM are the best choice, considering the shape of the model and the capabilities of the machine, as the best ratio between the quality of the surface and the time needed for the operation is provided by these. Operations differ with regard to the tool path and parameters that can be adjusted. The operations were compared and the best results are achieved when the HSR operations “Contour Roughing” and then “Rest Roughing” are used and when the HSM operation “3D Constant Step Over” is used, where the machining time amounted 4 hours and 1 minute. Finally the G code was made for our product.
Global challenges, including climate change, land and ecosystem degradation, and a growing population have direct or indirect impact on natural resources and are forcing people to seek new ways of ...production and consumption that respect the ecological limits of our planet. To meet the challenges, the 2030 Agenda for Sustainable Development was adopted by 193 countries at the United Nations Summit in September 2015. The forest-wood chain has also been identified as closely linked to sustainable development and the Sustainable Development Goals (SDGs). Especially in countries with high forest cover, such as Slovenia, forest-wood chain is recognized in policy documents as key element for achieving the SDGs. The importance of the SDGs is not only recognized in national legislation, but also in relation to higher education and research institutions. With the aim to investigate how well higher education teachers and students are familiar with SDGs and whether they consider them important for the forestry and wood industry and if high education teachers and researchers integrate the SDGs into educational programs and research, survey was conducted with the employees (n=61) and students (n=185) of the University of Ljubljana, Biotechnical Faculty, Department of Forestry and Renewable Forest Resources and Department of Wood Science and Technology. The results show that both employees and students of the Department of Forestry and Renewable Forest Resources as well as employees and students of the Department of Wood Science are familiar with SDGs. All the respondents find SDGs important for the forestry and wood industry. All the participants especially emphasized SDG 15 - Life on land. The results also showed that, in the future, employees of both departments plan to integrate more SDGs into their educational and research process. Finally, it was concluded that educational and research institutions and integration of SDGs into their educational and research process could be an important step towards sustainability and achieving goals of 2030 Agenda for Sustainable Development. Students who will work in the forestry and wood industry sectors in the future could integrate and promote more sustainable practises in the sectors if they have sufficient knowledge of the SDGs and high perception of sustainability. KEYWORDS: sustainable development goals; forestry; wood science; education; research Globalni izazovi kao sto su klimatske promjene, unistavanje zemljista i ekosustava te sve veci broj stanovnika izravno ili neizravno utjecu na prirodne resurse i poticu ljude da traze nove nacine proizvodnje i potrosnje koji postuju ekoloska ogranicenja naseg planeta. Kako bi odgovorile na te izazove, 193 zemlje usvojile su na skupu Ujedinjenih naroda u rujnu 2015. Agendu odrzivog razvoja do 2030. Lanac suma - drvo takoder je prepoznat kao usko povezan s odrzivim razvojem i ciljevima odrzivog razvoja (SDG). Osobito je u zemljama koje imaju veliku pokrivenost sumama, poput Slovenije, lanac suma - drvo u politickim dokumentima prepoznat kao kljucni element za postizanje ciljeva odrzivog razvoja. Vaznost ciljeva odrzivog razvoja nije naglasena samo u nacionalnom zakonodavstvu vec i u obrazovnim i istrazivackim institucijama. Cilj istrazivanja bio je utvrditi koliko su nastavnici i studenti u visokom obrazovanju upoznati s ciljevima odrzivog razvoja, smatraju li ih vaznima za sumarstvo i drvnu industriju te integriraju li nastavnici i znanstvenici ciljeve odrzivog razvoja u obrazovne programe i istrazivanja. Na Biotehnickom fakultetu Sveucilista u Ljubljani, na Odsjeku za sumarstvo i obnovljive sumske resurse te na Odsjeku za znanost o drvu i drvnu tehnologiju, provedena je anketa sa zaposlenicima (n = 61) i studentima (n = 185). Rezultati pokazuju da su zaposlenici i studenti obaju odsjeka upoznati s ciljevima odrzivog razvoja. Svi ispitanici smatraju da su ciljevi odrzivog razvoja vazni za sumarstvo i drvnu industriju. Svi su posebno istaknuli cilj odrzivog razvoja 15 - Zivot na kopnu. Rezultati su takoder pokazali da zaposlenici obaju odsjeka planiraju u buducnosti integrirati vise ciljeva odrzivog razvoja u svoj obrazovni i istrazivacki proces. Zakljucili smo da bi integracija ciljeva odrzivog razvoja u obrazovni i istrazivacki proces mogla biti vazan korak prema odrzivosti i postizanju ciljeva Agende odrzivog razvoja do 2030. Studenti koji ce u buducnosti raditi u sektoru sumarstva i drvne industrije mogli bi integrirati i promicati odrzive prakse u tim sektorima ako imaju dovoljno znanja o ciljevima odrzivog razvoja i visoku svijest o odrzivom razvoju. KLJUCNE RIJECI: ciljevi odrzivog razvoja; sumarstvo; znanost o drvu; obrazovanje; istrazivanje
A study was conducted on the waste of disposable surgical masks and their problematic impact on the environment. The studies examined have shown the negative effects on the environment that are ...likely to occur and those that have already occurred. In this article, society's relationship to the potential recycling of disposable surgical masks is considered and projected onto the possibilities of the cradle-to-cradle design approach. The development of a product from recycled surgical masks is driven by two different surveys. The first focuses on wear and disposal habits, and the second on the relationship to recycling. As a result, the flooring was developed with thermally treated recycled surgical masks replacing the filler layer. The goal of the product design was to improve the long-term life cycle analysis of a waste surgical mask.
Globalni izazovi kao što su klimatske promjene, uništavanje zemljišta i ekosustava te sve veći broj
stanovnika izravno ili neizravno utječu na prirodne resurse i potiču ljude da traže nove načine ...proizvodnje i potrošnje koji poštuju ekološka ograničenja našeg planeta. Kako bi odgovorile na te izazove, 193 zemlje usvojile su na skupu Ujedinjenih naroda u rujnu 2015. Agendu održivog razvoja do 2030. Lanac šuma – drvo također je prepoznat kao usko povezan s održivim razvojem i ciljevima održivog razvoja (SDG). Osobito je u zemljama koje imaju veliku pokrivenost šumama, poput Slovenije, lanac šuma – drvo u političkim dokumentima prepoznat kao ključni element za postizanje ciljeva održivog razvoja. Važnost ciljeva održivog razvoja nije naglašena samo u nacionalnom zakonodavstvu već i u obrazovnim i istraživačkim institucijama. Cilj istraživanja bio je utvrditi koliko su nastavnici i studenti u visokom obrazovanju upoznati s ciljevima održivog razvoja, smatraju li ih važnima za šumarstvo i drvnu industriju te integriraju li nastavnici i znanstvenici ciljeve održivog razvoja u obrazovne programe i istraživanja. Na Biotehničkom fakultetu Sveučilišta u Ljubljani, na Odsjeku za šumarstvo i obnovljive šumske resurse te na Odsjeku za znanost o drvu i drvnu tehnologiju, provedena je anketa sa zaposlenicima (n = 61) i studentima (n = 185). Rezultati pokazuju da su zaposlenici i studenti obaju odsjeka upoznati s ciljevima održivog razvoja. Svi ispitanici smatraju da su ciljevi održivog razvoja važni za šumarstvo i drvnu industriju. Svi su posebno istaknuli cilj održivog razvoja 15 – Život na kopnu. Rezultati su također pokazali da zaposlenici obaju odsjeka planiraju u budućnosti integrirati više ciljeva održivog razvoja u svoj obrazovni i istraživački proces. Zaključili smo da bi integracija ciljeva održivog razvoja u obrazovni i istraživački proces mogla biti važan korak prema održivosti i postizanju ciljeva Agende održivog razvoja do 2030. Studenti koji će u budućnosti raditi u sektoru šumarstva i drvne industrije mogli bi integrirati i promicati održive prakse u tim sektorima ako imaju dovoljno znanja o ciljevima održivog razvoja i visoku svijest o održivom razvoju.
Increasing the concentration of an element in edible produce (i.e., biofortification) can mitigate the element deficiency in humans. Sprouts are small but popular part of healthy diets providing ...vitamins and essential elements throughout the year. Element composition of sprouts can easily be amended, e.g., by soaking the grains in element-rich solution before germination (grain-priming). In addition, pre-treatment of grains to improve element translocation from the solution into the grain may further enhance the element concentration in the sprout. Cold plasma technique could provide such solution, as it increases wettability and water uptake of grains. Grains of common buckwheat (
Moench) were pre-treated/ untreated with cold plasma and soaked in ZnCl
solution/pure water. Germination tests, α-amylase activity, grain hydrophilic properties and water uptake were assessed. Element composition of grain tissues and of sprouts was assessed by micro-particle-induced-X-ray emission and X-ray fluorescence spectroscopy, respectively. Grain-priming increased Zn concentration in shoots of common buckwheat sprouts more than five-times, namely from 79 to 423 mg Zn kg
dry weight. Cold plasma treatment increased grain wettability and water uptake into the grain. However, cold plasma pre-treatment followed by grain-priming with ZnCl
did not increase Zn concentration in different grain tissues or in the sprouts more than the priming alone, but rather decreased the Zn concentration in sprout shoots (average ± standard error: 216 ± 6.13 and 174 ± 7.57 mg Zn kg
dry weight, respectively). When the fresh weight portion of whole sprouts (i.e., of roots and shoots) was considered, comparable average requirements of Zn, namely 24.5 % and 35 % for adult men and women would be satisfied by consuming cold plasma pre-treated and not pre-treated grains. Potential advantages of cold plasma pre-treatment need to be tested further, mainly to optimize the duration of soaking required to produce Zn-enriched sprouts.
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