@inproceedings{MTMT:34777037, title = {The Use of Geothermal Energy for Sustainable Development and Economic Prosperity}, url = {https://m2.mtmt.hu/api/publication/34777037}, author = {KOUKI, Nadjat and Vityi, Andrea}, booktitle = {FENNTARTHATÓSÁGI ÁTMENET: KIHÍVÁSOK ÉS INNOVATÍV MEGOLDÁSOK - Nemzetközi tudományos konferencia a Magyar Tudomány Ünnepe alkalmából}, doi = {10.35511/978-963-334-499-6-Kouki-Vityi}, unique-id = {34777037}, year = {2024}, pages = {365-379}, orcid-numbers = {Vityi, Andrea/0000-0002-2035-1866} } @book{MTMT:34760922, title = {Bevezetés az agrárerdészetbe}, url = {https://m2.mtmt.hu/api/publication/34760922}, isbn = {9789633345146}, author = {Vityi, Andrea}, doi = {10.35511/978-963-334-515-3}, publisher = {University of Sopron Press}, unique-id = {34760922}, year = {2024}, orcid-numbers = {Vityi, Andrea/0000-0002-2035-1866} } @article{MTMT:34754866, title = {High-cellulose content of in-situ Miocene fossil tree stumps and trunks from Lusatia lignite mining district, Federal Republic of Germany}, url = {https://m2.mtmt.hu/api/publication/34754866}, author = {Kus, J. and Dolezych, M. and Schneider, W. and Hower, J.C. and Hofmann, Tamás and Visiné Rajczi, Eszter and Bidló, András and Bolodár-Varga, Bernadett and Sachsenhofer, R.F. and Bechtel, A. and Stojanović, K. and Životić, D. and Kojić, I. and Mastalerz, M. and Graupner, T. and Lukens, W.E. and Donaldson, L.}, doi = {10.1016/j.coal.2024.104494}, journal-iso = {INT J COAL GEOL}, journal = {INTERNATIONAL JOURNAL OF COAL GEOLOGY}, volume = {286}, unique-id = {34754866}, issn = {0166-5162}, abstract = {Second Miocene Seam Complex (2nd MFK; germ.: 2. Miozäner Flözkomplex) holds many in-situ, not permineralised fossil tree stumps and trunks with high-cellulose contents. The state of preservation of a set of in-situ fossil trees (Taxodioxylon cryptomerioides, Sciadopityoxylon wettsteinii, and Quasisequoioxylon piskowitzense) collected from three open-cast mines (Welzow-Süd, Meuro, and Piskowitz) in Lusatia lignite mining district, Federal Republic of Germany was investigated using a multi-method research schema. Examination of preservation state of thermally immature fossil woods revealed: (1) well-preserved (non-deformed, non-degraded, and non-flattened) textinite, (2) a retained structural integrity represented by multilayered (multi-zoned) cells with primary, secondary cell wall, and middle lamella, (3) microfracturing restricted to secondary walls only, (4) preservation of polyphenolic parenchyma cells (PP cells), (5) excellent preservation of pits in ray tracheids, (6) presence of amorphous silica (opal-A) coating, and (7) crystalline silica (opal-CT) fillings of small-bladed crystals. Thermogravimetric analysis results showed dissimilar gelification status of fossil samples, supporting chlorite holocellulose assay results. The latter indicated anomalously high-cellulose values (15.6–37.6% holocellulose). The micro-FTIR data obtained revealed an excellent preservation of both hemicellulose (bands at 1740 and 1245 cm−1) and cellulose (bands at 1110 and 1040 cm−1). Micro-FTIR spectrometry indicated lack of preferential hydrolytic removal of polysaccharides in examined samples. Biomarker patterns in lignite revealed forested and prevailing reed-mire vegetation. The results indicated lower contribution of Cupressaceae and emergent macrophyta to precursor organic matter of Welzow-Süd in comparison to Piskowitz lignite. Piskowitz lignite formed in permanent mire with stable water table under reducing, mesotrophic conditions. In contrast, more pronounced water level fluctuations (reducing to slightly oxic settings) and/or post-depositional events are postulated for Welzow-Süd samples. Biomarker assemblages obtained from fossil wood show a distinct dominance of diterpenoids and δ13C values (−24.6 ‰ to −20.3 ‰) that clearly confirm gymnosperm sources. Distributions of diteprenoids and sesquiterpenoids, as well as fatty acids indicate the higher amount of saturated diterpenoids (pimarane, abietane) in fossil than in modern wood. This indicates reducing conditions promoting hydrogenation reactions. In addition to low Eh, preservation of cellulose in fossil wood was also favored by acidic conditions, very low degrees of aerobic fungal degradation, and protection of wood by Cupressaceae-derived resins. While δ13C values of fossil wood are generally consistent with stratigraphic trends and chemotaxonomical classification, slightly elevated δ13C values recorded in T. cryptomerioides and S. wettsteinii in Welzow-Süd and Meuro open-cast mines, respectively, compared to published δ13C data of fossil gymnosperm wood are also indicative for good cellulose preservation. Both preservation of in-situ Miocene fossil stumps and trunks and retention of high-cellulose contents are suggested to be related to high-amplitude temporal fluctuations associated with repeated eustatically-controlled wet-dry cycling inducing: (1) weathering of tuff- and rhyolite-dominated acidic volcanics and Lausitz granodiorite, (2) associated erosion of saprolites, and (3) peat-sourced circulation of humic acid- and fulvic acid-rich waters. The latter led to the formation of Middle Miocene kaolinite deposits, as well as to the release of silicic acid and its subsequent precipitation in form of opal-A. The latter influenced preservation of high-cellulose contents in fossil wood.}, keywords = {carbon isotope; CLSM; Micro-FTIR; holocellulose; lignite; biomarkers; Xylite; Fossil and modern wood; Second Lusatian lignite seam; Calcofluor-stained CLSM}, year = {2024}, eissn = {1872-7840} } @article{MTMT:34753545, title = {Forest Carbon Modeling in Poplar and Black Locust Short Rotation Coppice Plantation in Hungary}, url = {https://m2.mtmt.hu/api/publication/34753545}, author = {Mulyana, Budi and Polgár, András and Vityi, Andrea}, doi = {10.23960/jsl.v12i2.883}, journal-iso = {J SYLVA LESTARI}, journal = {JURNAL SYLVA LESTARI}, volume = {12}, unique-id = {34753545}, issn = {2339-0913}, abstract = {Forest carbon dynamic modeling for estimating the carbon stock in short rotation coppice bioenergy plantation in Hungary will be vital for better comprehending the role of black locust (Robinia pseudoacacia) and poplar (Populus sp.) in carbon dioxide sequestration from the atmosphere. The research aims were to estimate the potential carbon stock and describe the carbon distribution of the short rotation coppice bioenergy plantation above and below ground. Various sources were used to acquire parameterization data for developing forest carbon dynamic models. CO2FIX modeling V.3.2 was utilized in the data analysis to estimate the total carbon stock in biomass, soil, harvested wood products, and bioenergy compartments. Modeling has been around for 45 years. In this research, the total carbon stock of black locust and poplar at the end of the simulation period was 64.13 and 131.08 MgC.ha-1, respectively. The average carbon allocation above and below ground for black locust and poplar was 0.76, 19.76, 1.80, and 21.67 MgC.ha-1, respectively. In conclusion, poplar outperformed black locust regarding carbon storage in the short rotation coppice bioenergy plantation. Below ground carbon allocation was much higher than above ground. Therefore, more attention should be paid on below ground allocation through environmentally friendly soil management.Keywords: bioenergy plantation, carbon dynamics, climate change mitigation, CO2FIX model, fast growing species}, keywords = {climate change mitigation; Carbon dynamics; bioenergy plantation; CO2FIX model; Fast growing species}, year = {2024}, eissn = {2549-5747}, pages = {324-337}, orcid-numbers = {Vityi, Andrea/0000-0002-2035-1866} } @article{MTMT:34734080, title = {CLIMATE CHANGE MITIGATION THROUGH CARBON STORAGE AND PRODUCT SUBSTITUTION IN THE HUNGARIAN WOOD INDUSTRY}, url = {https://m2.mtmt.hu/api/publication/34734080}, author = {Király, Éva Ilona and Börcsök, Zoltán and Kocsis, Zoltán and Németh, Gábor and Polgár, András and Borovics, Attila}, doi = {10.37763/wr.1336-4561/69.1.7286}, journal-iso = {WOOD RES-SLOVAKIA}, journal = {WOOD RESEARCH}, volume = {69}, unique-id = {34734080}, issn = {1336-4561}, abstract = {In our study we estimated under two different scenarios the historic and future carbon balance of the Hungarian harvested wood product (HWP) pool using the HWP-RIAL model. We also estimated the effect of product and energy substitution and the magnitude of avoided emissions based on international substitution factors. According to our results in the period 1985–2021 the average of the HWP net emissions plus substitution effects was -3,800 kt CO2. In this period the 49% of the forest industry-related climate benefits was attributable to carbon storage in forests, while 4% was attributable to carbon storage in wood products and 47% to product and energy substitution. According to our projection the HWP net emissions plus substitution effects could reach -14,994 kt CO2 up to 2050 under an intensified domestic wood processing industry. This means that product substitution benefits could be tripled, while the net removals of the HWP pool could be 5 times higher than the historic values.}, year = {2024}, pages = {72-86} } @misc{MTMT:34730105, title = {Implementation Program of The Sustainable University. Poster. World Sustainable Energy Days 2024, 5 - 8 March 2024, Wels, Austria}, url = {https://m2.mtmt.hu/api/publication/34730105}, author = {Fábián, Attila and Lakatos, Ferenc and Elekné Fodor, Veronika and Őrsi, Árpád and Náhlik, András and Polgár, András}, unique-id = {34730105}, year = {2024} } @article{MTMT:34720204, title = {A fapellet mint megújuló és potenciális alternatív energiaforrás}, url = {https://m2.mtmt.hu/api/publication/34720204}, author = {Kocsis, Zoltán and Németh, Gábor and Börcsök, Zoltán and Polgár, András and Király, Éva Ilona and Kóczán, Zsófia}, journal-iso = {ERDÉSZETI LAPOK}, journal = {ERDÉSZETI LAPOK}, volume = {159}, unique-id = {34720204}, issn = {1215-0398}, year = {2024}, pages = {69-71} } @misc{MTMT:34715766, title = {Soproni Egyetem E-hulladék kezelési kapmánya, Zöld Egyetem törekvések. Magyar Katolikus Rádió, 2024. február 12.}, url = {https://m2.mtmt.hu/api/publication/34715766}, author = {Polgár, András}, unique-id = {34715766}, year = {2024} } @misc{MTMT:34715659, title = {Pyramid Model of The Sustainable University and Its Implementation Program, Presentation}, url = {https://m2.mtmt.hu/api/publication/34715659}, author = {Fábián, Attila and Lakatos, Ferenc and Elekné Fodor, Veronika and Őrsi, Árpád and Náhlik, András and Polgár, András}, unique-id = {34715659}, year = {2024} } @misc{MTMT:34715641, title = {Fenntartható egyetem modellje és megvalósítási programja. Előadás (plenáris)}, url = {https://m2.mtmt.hu/api/publication/34715641}, author = {Fábián, Attila and Lakatos, Ferenc and Elekné Fodor, Veronika and Őrsi, Árpád and Náhlik, András and Polgár, András}, unique-id = {34715641}, year = {2024} }