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Virágporba zárt táj: az Ormánság Téseny vonzáskörzetének feltérképezése virágok és mézminták pollenanalízisével : [absztrakt]
Get PDFRapid fabrication of UIO-66 using a microwave-assisted approach and its performance in hydrogen storage : [abstract]
Get PDFLife cycle assessment of materials used for portal frame production
Get PDFThe construction sector plays a crucial role in global environmental impacts, making accurate life cycle assessment essential for sustainable decision making. This research evaluates the environmental impacts of timber, steel, and concrete in industrial portal frame structures using life cycle assessment. Timber shows the highest impact on land use but lower contributions to climate change and ecotoxicity. Steel has moderate climate impacts but the highest potential for freshwater ecotoxicity, while concrete is the most carbon-intensive, contributing most to climate change. The results highlight the importance of evaluating multiple impact categories for sustainable material selection
Fabrication and investigation of Fe₃O₄/Ag₃PO₄ photocatalyst on the surface of ceramic paper
Get PDFThe study aim on the fabrication and investigation of Fe3O4/Ag3PO4 photocatalyst on the surface of ceramic paper through precipitation method and immobilization of composite onto ceramic paper by in situ and filtration, impregnation method. The integration of magnetite (Fe3O4) and silver phosphate (Ag3PO4) on ceramic paper results in high performance efficiency of the material due to synergistic effect, improved charge separation, improved light absorption, stability and durability, increased surface area and active site. The ceramic paper supports uniform distribution of catalyst and since it can withstand high temperature, resist corrosion and chemical attack as well as possess excellent heat and electrical barrier, hence fabricated Fe3O4/Ag3PO4 photocatalyst on the surface of ceramic paper leads it to be applied for water treatment, photocatalysis and environmental remediation. Also, it has to be note that immobilization of the Fe3O4/Ag3PO4 photocatalyst on ceramic paper is of great importance due to the fact that ceramic paper prevent photocatalyst bleaching, allow good interaction of pollutants and catalyst surface due to porous structure, enhance durability and allows reuse over multiple cycles, in contrast most photocatalysts are tested on slurry suspension systems in which long term use is limited by particle aggregation, poor recovery and risk of secondary contamination. Under this study, the photocatalytic activity of the fabricated photocatalyst will be assessed via methylene blue and methyl orange degradation experiment. The fabricated photocatalyst will be characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX) before and after degradation experiments
Glycolipidomic characterization of astrocytoma and adjacent tissue: a mass spectrometry approach to ganglioside profiling
Get PDFThis study highlights the use of ion mobility mass spectrometry to characterize gangliosides in peritumoral tissue of diffuse astrocytoma. The identification of specific species, such as GT1b and Fuc-GD1 variants, suggests their potential as biomarkers and contributors to tumor progression. These findings open new avenues for diagnostic and therapeutic strategies
The impact of pedoclimatic conditions and technological adaptation on wine production in the Recaș vineyard center (2023-2024)
Get PDFThe study analyzes the interaction between pedological resources, climate variability and technological measures applied in the Recaș Viticulture Center, Timiș County, Romania, in the period 2023–2024. The research aimed at the physico-chemical characterization of the main types of soil (typical leached Eutricambosol, typical Preluvosol and molic Gleiosol), highlighting the climatic conditions in the two years and their impact on the productions of the Cabernet Sauvignon, Merlot, Pinot Noir, Fetească Neagră and Chardonnay varieties. The results show that the typical Preluvosol has a slightly acidic reaction (pH 5.6 in the Ao horizon) and a low humus content (2.55%), which limits the availability of nutrients, and the Gleiosol is characterized by loamy-clay texture and excess moisture. At the climatic level, the year 2024 was marked by severe drought and maximum temperatures of up to 45°C, which led to average production decreases of approximately 24.8% compared to 2023. The adaptive measures implemented (drip irrigation, night harvesting, advanced mechanization) partially mitigated the effects of water and thermal stress. The conclusions emphasize the importance of an integrated pedological and technological management strategy to increase the resilience of viticulture to climate change
Impact of pedogenetic factors on the morphological and chemical properties of representative soils in Pecica, Western Romania
Get PDFThis study aims to characterize the morphological and chemical properties of representative soils in the Pecica area, Arad County, western Romania, and to evaluate the influence of pedogenetic factors on soil formation. The investigated area, part of the Western Plain, is characterized by loess and clay deposits, low altitudes (90–120 m), and a temperate-continental climate with moderate precipitation (580–600 mm/year). Three soil types were analyzed: vertic gleic Chernozem, vertic Phaeozem, and amfigleic Eutric Cambisol. Morphological descriptions and laboratory analyses (pH, humus content, cation exchange capacity, base saturation, and carbonate content) revealed significant differences among soils. Chernozem exhibited high fertility but moderate gleization and localized sodicity. Phaeozem had superior humus content and cation exchange capacity, while Eutric Cambisol was limited by acidity and low phosphorus availability. The study confirms that climate, parent material, topography, groundwater, vegetation, biological activity, and anthropic interventions collectively shape soil properties. The results underline the need for site-specific management practices, including pH correction, organic and mineral fertilization, controlled drainage, and irrigation, to ensure sustainable utilization of the pedological resources in Pecica
Monitoring of organic matter removal efficiency in wastewater and sludge treatment processes based on dielectric measurements : [abstract]
Get PDFSynthesis and characterization of nitric oxide donor nanostructured dendritic mesoporous tetrasulfide-bridged organosilica with prospects for environmental application
Get PDFThe objective of this study was to develop and optimize nanomaterials capable of enhancing the essential parameters of plant growth. To achieve this objective, nanoparticle-based nitric oxide (NO) donors and graphene oxide quantum dots (GQDs) were synthesized. Carbon quantum dots and graphene quantum dots (GQDs) exhibit minimal inhibition of the natural growth pathways of plants and have demonstrated potential to enhance growth while maintaining good biocompatibility. The NO donor was designed as nanostructured dendritic mesoporous tetrasulfide-bridged organosilica nanoparticles (DMON NPs), which have been modified with S-nitrosothiol (SNO) to facilitate a controlled and sustained release of NO. These characterizations are crucial to assess comprehensively the performance and potential applications of the nanoparticles in agricultural and plant biotechnology contexts