Periodica Polytechnica (Budapest University of Technology and Economics)
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Rejtett képességek felszínre hozatala: Jó gyakorlatként működő művészeti kommunikációs program bemutatása, gyermekotthonban élő kiskamaszok számára
No full textYoung people from disadvantaged backgrounds are often less articulate than their peers, which can have a significant impact on their academic performance, social relationships and future employment prospects. This communication deficit is associated with, among other things, low self-confidence, lack of opportunities for verbal and visual self-expression, and exclusion from school and society. The study aims to present a good practice case study of five appropriate intensive arts communication programmes that combine arts education, inclusive pedagogy and effective communication methods to develop the expressive skills of young adolescents in children's homes. The novelty of the programme lies in the fact that it combines visual storytelling and traditional picture making in the development of creative expression, thus supporting the development of communication skills in a complex way. Qualitative and quantitative analyses show that the use of visual storytelling and creative processes contributed significantly to the development of participants' verbal and visual expression. The findings suggest that the development programme could serve as good practice for other institutions, but could also be applied to institutions working with similar target groups.The positive effects experienced during the programme were not only reflected in improved communication skills, but also in the participants' self-esteem and ability to work together. Group artwork provided an opportunity for adolescents to try out new roles in a safe and accepting environment, which contributed to a deeper sense of self-identity and positive social interaction.A társadalmi hátrányokkal élő fiatalok kifejezőkészsége gyakran elmarad kortársaikétól, ami jelentősen befolyásolhatja iskolai teljesítményüket, társas kapcsolataikat és későbbi munkaerőpiaci esélyeiket. Ez a kommunikációs deficit többek között az alacsony önbizalommal, a verbális és vizuális önkifejezés lehetőségeinek hiányával, valamint az iskolai és társadalmi kirekesztettséggel is összefüggésbe hozható. A tanulmány egy öt alkalmas, intenzív művészeti kommunikációs program jó gyakorlatként történő bemutatását tűzi ki célul, amely a művészetpedagógia, az inkluzív pedagógia és a hatékony kommunikáció módszereit ötvözve segítette a gyermekotthonban élő kiskamaszok kifejezőkészségének fejlesztését. A program újszerűsége abban rejlik, hogy a vizuális történetmesélést és a hagyományos képalkotást ötvözi a kreatív önkifejezés fejlesztésében, így komplex módon támogatja a kommunikációs készségek fejlődését. A kvalitatív és kvantitatív elemzések azt mutatják, hogy a vizuális történetmesélés és a kreatív alkotófolyamatok alkalmazása jelentős mértékben hozzájárultak a résztvevők verbális és vizuális kifejezőképességének fejlődéséhez. Az eredmények arra utalnak, hogy a fejlesztési program jó gyakorlatként szolgálhat más intézményekben egyaránt, de hasonló célcsoporttal dolgozó intézmények számára is alkalmazható. A program során tapasztalt pozitív hatások nemcsak a kommunikációs készségek javulásában mutatkoztak meg, hanem a résztvevők önértékelésének és együttműködési képességeinek erősödésében is. A csoportos alkotás lehetőséget teremtett arra, hogy a kiskamaszok biztonságos és elfogadó közegben próbálják ki magukat új szerepekben, ami hozzájárult önazonosságuk mélyebb megéléséhez és társas kapcsolataik pozitív alakulásához
Isotherm, Kinetic, and Thermodynamic Insights on Effective Sequestration of Cr(VI) by using De-oiled Karanja Seed Biochar
Full text linkThis study investigates the potential of non-edible waste-derived Karanja seed (Pongamia pinnata) biochar (KSB) as a biosorbent for Cr(VI) removal from synthetic effluents. Characterization of KSB before and after Cr(VI) biosorption using thermogravimetric analysis, scanning electron microscopy/energy dispersive X-ray spectroscopy, X-ray diffraction, and Fourier-transform infrared spectroscopy confirmed that the adsorption process primarily occurs through chemisorption, ion exchange, and/or complexation mechanisms. The effects of several process parameters, including pH, contact time, initial Cr(VI) concentration, KSB dosage, and temperature, on Cr(VI) biosorption efficiency were systematically examined through batch experiments. The results indicated an optimum biosorption efficiency of 91% under the following conditions: initial Cr(VI) concentration of 20 mg L−1, contact time of 60 min, pH 2, KSB loading of 0.01 g, and a temperature of 303 K. Adsorption equilibrium data were analyzed using the Freundlich and Langmuir isotherm models, with the Langmuir model yielding a maximum biosorption capacity of 164 mg g−1, suggesting monolayer biosorption. Kinetic analysis demonstrated that the pseudo-second-order model provided the best fit, indicating that chemisorption governed Cr(VI) uptake on KSB, involving three distinct intra-particle diffusion stages. Thermodynamic parameters (ΔH0, ΔG0, and ΔS0) were evaluated, confirming that the biosorption process was spontaneous, exothermic, and thermodynamically feasible. Additionally, the biosorption-desorption performance of KSB for Cr(VI) was assessed through cyclic experiments, highlighting its regeneration potential for practical applications. Finally, the results revealed that KSB is an efficient and cheap biosorbent for the sequestration of Cr (VI) from a synthetic medium
Introduction of a New Variable and the Problem of Complexity in Determining Impact Speeds in Vehicle–Pedestrian Accidents
Full text linkReconstruction and analysis of road traffic accidents represent an inherently complex task. This is especially true for one of the most significant accident categories, vehicle-pedestrian collisions. Forensic traffic and vehicle technical experts must determine the relevant impact speeds in virtually all cases, based on a wide variety of objective traces. The most relevant evidence and information can be obtained on-site within a limited period following the occurrence of the accident. These indispensable sources of information cannot be reproduced later or can only be reproduced to a very minimal extent. Therefore, it is essential to uncover as many traces at the accident site as possible and as soon as possible. In certain cases, the so-called rapid expert calculations may need to be performed on-site. In this paper, we seek solutions related to these rapid calculations and to facilitating the determination of speeds that play a critical role in vehicle-pedestrian accidents. The proposed approach may simplify the daily work of forensic traffic and vehicle technical experts
The Rights Clearance Documentation Tool
No full textRights Clearance Documentation Tool (RCDT) was designed and developed in the framework of the EODOPEN project (2019–2024). The project focused on making library collections visible, especially works published in the 20th and 21st century. The leading partner, University Library of Innsbruck, was joined by 14 European libraries from 11 countries to achieve the project’s objectives, such as building a common portal to display the project’s results and stimulating interest in access to textual material covered by the project. Working Group 6 (WG6), led by the National Széchényi Library (NSL), aimed at designing and developing an online tool for the documentation of rights clearance. RCDT is a web-based application and serves to support library employees in their work aiming at identifying copyright statuses of materials by documenting each step of rights clearance procedures. This article includes an overview of its main features.Rights Clearance Documentation Tool (RCDT) was designed and developed in the framework of the EODOPEN project (2019–2024). The project focused on making library collections visible, especially works published in the 20th and 21st century. The leading partner, University Library of Innsbruck, was joined by 14 European libraries from 11 countries to achieve the project'sobjectives, such as building a common portal to display the project's results and stimulating interest in access to textual material covered by the project. Working Group 6 (WG6), led by the National Széchényi Library (NSL), aimed at designing and developing an online tool for the documentation of rights clearance. RCDT is a web-based application and serves to supportlibrary employees in their work aiming at identifying copyright statuses of materials by documenting each step of rights clearance procedures. This article includes an overview of its main features
From Digitised Manuscript to Database: Automatic Processing of Civil Registers
No full textThis article presents our research on the systematic processing of Hungarian civil registers, encompassing the stages from digitization to data integration into a structured database, culminating in the dissemination of results via an online platform. The initial phase of the project focused on the handwritten birth, marriage, and death registers of the Abony municipality in Pest County, covering the period from 1895 to 1980. During this pilot initiative we created a comprehensive workflow that facilitated the conversion of digitized images into a structured SQL database, leveraging automated processes and machine learning techniques. The successful completion of this pilot project represents a significant milestone, establishing a replicable framework that can be extended to other municipalities, as all components of the workflow are now operational.This article presents the first milestone in our research on the systematic processing of Hungarian civil registers, encompassing the stages from digitization to data integration into a structured database, culminating in the dissemination of results via an online platform. The initial phase of the project focused on the handwritten birth, marriage, and death certificatesof the Abony municipality in Pest County, covering the period from 1895 to 1980. During this pilot initiative we created a comprehensive workflow that facilitated the conversion of digitized images into a structured SQL database, leveraging automated processes and machine learningtechniques. The successful completion of this pilot project represents a significant stage, establishing a replicable framework that can be extended to other municipalities, as all components of the workflow are now operational, and can be called sequentially
Nyelv, tudás, otthon: magyar nyelvű könyvek az Eperjesi Egyetem polcain
No full textThe University Library of the University of Presov is a modern academic institution with deep roots in centuries-old educational and cultural traditions. Over the past decades, it has developed into a dynamic scholarly library with an extensive collection, a broad range of services, and vibrant cultural programming. Of particular importance is the library of the Institute of Hungarian Language and Culture, which holds over 4,000 Hungarian-language volumes and plays a key role in preserving and transmitting linguistic and cultural knowledge. The institute's collection spans multiple academic disciplines and serves not only educational purposes, but also actively contributes to the advancement of scholarly activity and reading culture.Az Eperjesi Egyetem Egyetemi Könyvtára sok évszázados oktatási és kulturális hagyományokra épülő intézmény, amely az elmúlt évtizedekben korszerű tudományos könyvtárrá fejlődött. A könyvtár jelentős gyűjteménnyel, kiterjedt szolgáltatási kínálattal és élénkkulturális programkínálattal szolgálja az egyetem közösségét. Külön figyelmet érdemel a Magyar Nyelv és Kultúra Intézetének könyvtára, amely több mint négyezer magyar nyelvű kötettel járul hozzá a nyelvi és kulturális tudás megőrzéséhez és közvetítéséhez. Az intézeti gyűjtemény több tudományterületet ölel fel, és nem csupán oktatási célokat szolgál, hanem aktívan hozzájárul a tudományos tevékenység és az olvasáskultúra előmozdításához is
Turning Organic Waste into a Valuable Alternative: Evaluation of Total Phenolic Content, Radical and Antioxidant Activity of Medlar Seed Extracts
Full text linkIn this study, the potential of medlar seeds, which have no known usage and are considered organic waste, as a natural antioxidant source was investigated. For this purpose, total phenolic, total flavonoid, and anthocyanin contents, which are important in antioxidant activity, were found in aqueous and ethanol extracts of medlar seeds. When the antioxidant activities were examined, the ethanol extract showed 92.38 ± 0.51% activity in 2,2-diphenyl-1-picrylhydrazyl radical (DPPH•) scavenging at a concentration of 25 µg/mL, slightly better than the synthetic antioxidant butylated hydroxyanisole (BHA) at the same concentration. Also, ethanol extract had 23.30 ± 1.78% of chelating activity, while aqueous extract had 1.04 ± 0.44%. In N,N-dimethyl-p-phenylenediamine (DMPD+•) scavenging activity, aqueous extract had 36.06 ± 0.89% at 200 µg/mL, while BHA had 41.25 ± 0.1%. In the β-carotene bleaching test, the aqueous extract (1.04 ± 0.02) had slightly better activity than BHA, and the ethanol extract (0.88 ± 0.002) had a somewhat similar activity to BHA. In general, both extracts had considerable antioxidant activity. When the results are examined, it is thought that medlar seeds, which are considered waste, can be made more valuable by using them as a good antioxidant source
Maximizing Lithium–Air Battery Performance with Polystyrene Based Membranes in Humid Environments
Full text linkThe lithium–air battery (LAB) is considered the most promising battery type due to its significantly high theoretical energy density, which is comparable to that of gasoline. Most LAB research takes place in pure oxygen environments, as operating them under normal conditions with moisture raises safety concerns. This study focuses on creating polystyrene (PS) based membranes with added graphite to enhance their properties. The quantity of graphite ranges from 0 to 1 wt.% of PS, and the resulting membrane undergoes characterization using Fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD), scanning electron microscopy (SEM), water contact angle (WCA), and moisture transmission rate (MTR). The investigation reveals that the 0.7 wt.% graphite infused PS membrane performs efficiently and is subsequently employed in LAB. Additionally, the use of MnO2 as a catalyst in the cathode material is explored through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS), showing promising results. When tested in a moist gas environment alongside the optimal membrane, the LAB behaves similarly to LAB without a membrane, akin to its performance in a pure oxygen setting