bluuebunny/crossref_metadata_2025 huggingface dataset:
Sent from the Heavens, Received in Budapest
Authors: Bakos Áron
Published: December 2024

The paper examines heavenly letters by combining folkloristic, historical, and anthropological perspectives. First, it analyses and compares variations collected by Hungarian folklorists, critically evaluating their findings. Secondly, to reframe these interpretations and explore the character and late modern uses of the letters, the paper traces the origins of this tradition, and looks at the early medieval counterparts of the letters. Based on this brief review of their original form and function, the paper offers an anthropological reading of the communicative role of the letters. My central argument is that through the mere act of copying the metonymic relationship between the letter and the divine power is metaphorically altered, and that the act of copying gradually became an expressive, rather than a technical action. As a result, the changes in their character, the various protective functions incorporated into them or associated with their possession, can be understood as part of a process in which heavenly letters shifted from being indexes to signals.
The Relationship Between Workplace Robots, Employee Exhaustion, and Turnover Intentions in the Age of Industry 5.0: Research From Four Southeastern European Countries
Authors: Nikolić Jelena Lukić , Labus Pero
Published: December 2024

This paper examines and analyzes the relationship between workplace robots, employee emotional exhaustion, and turnover intentions within the context of Industry 5.0. Empirical research was conducted from January to May 2024. During this period, a total of 582 respondents from four Southeastern European countries (Serbia, Croatia, Montenegro, Bosnia and Herzegovina) participated in the research. The proposed relationships between variables were tested by using the partial least squares method for structural equation modeling (PLS-SEM, SmartPLS software). The research results confirmed that the emotional exhaustion of employees had a positive relationship with turnover intentions, while workplace robots’ effects were negatively related to employee emotional exhaustion and turnover intentions. Leaders, managers, and human resource professionals may benefit from the findings presented in this paper, especially during the decision-making process on how to reduce the emotional exhaustion of employees by using workplace robots, which, in the end, will result in employee retention.
The Use of Video Marketing in the Communication Strategy of Business Universities
Authors: Pluta-Olearnik Mirosława , Hasiak Alisa
Published: December 2024

This study explores the role of video marketing in the communication strategies of Polish business universities as they navigate the competitive higher education market. The research examines the practices of five leading Polish business schools, benchmarking them against London Business School (LBS), a prominent European institution. Using qualitative methods, including literature reviews, case studies, and comparative analysis, the study identifies key elements of effective video marketing, such as campus presentations, interviews, event recordings, and promotional content. The findings may be useful for universities aiming to improve their operating strategies. The article also includes practical recommendations for measures to improve the effectiveness of marketing communication efforts within educational institutions.
Interdependency of Safety Factors and Geometric Elements of the Waste Dumps in the Berbeşti Mining Basin
Authors: Apostu Izabela-Maria , Rada Constantin , Faur Florin
Published: December 2024

As a result of mining operations, large amounts of sterile rocks result, which involve the occupation of some land surfaces and which can generate risk situations such as geotechnical phenomena (especially landslides). The risks the population is exposed to in the event of landslides and their increasing incidence in mining areas, make more and more researchers interested in investigating, inventorying and characterizing the conditions and landslides risk areas. The stability conditions for any engineering construction are evaluated right from the design phase. Since the physical and mechanical characteristics of the rocks that define the working slopes and the dumps in the mining perimeters cannot be significantly improved in order to increase stability reserves, the emphasis remains on their appropriate design. The paper aims to develop a fast method to provide indications of the safety factor for different geometric configurations of slopes. Based on the stability analyses, two nomograms were built that graphically represent the dependence between the geometric elements of the slopes and the values of the safety factors, the case study being carried out for the waste dumps in the Berbești Mining Basin, known for its lignite mining activity.
Assessment of the Pollution Level and Determination of the Geo-Accumulation Index of Heavy Metals in the Soil from the Old Funicular Dump Area – Uricani
Authors: Ioniţă Madalina-Flavia , Radu Sorin-Mihai
Published: December 2024

As a result of the mining activities carried out in the Jiu Valley, tailings dumps resulted. Currently, some of these tailing dumps are greened, some are inactive, and some of them are still active within operational exploitation perimeters. In order to capture the negative effects of these deposits, in this work an assessment of the degree of contamination will be carried out and the level of geo-accumulation of heavy metals will be determined in the soil in the area of the Old Funicular dump, an inactive one for about 12 years. The dump was formed following the deposition of tailings resulting from coal mining in the Uricani mine. The main purpose is to identify the types and concentrations of heavy metals present in the soil and determine the level of accumulation of these metals in a certain area. The study involved the collection of soil samples from 17 sampling points, followed by detailed chemical analyses to determine the concentrations of heavy metals present in the soil at the tailings dump. The results indicated variable levels of heavy metal contamination, with concentrations exceeding the normal value of these heavy metals in soil in certain areas. The geo-accumulation index (Igeo) was calculated to assess the degree of accumulation of each heavy metal in soil. The Igeo values obtained varied from slightly polluted to moderately polluted, suggesting a significant influence of mining activities on the soil in this area. The conclusions of the study emphasize the need to implement phytoremediation measures and continuous monitoring to prevent ecological and human health risks.
Evaluation of the Suitability of Non-Productive Land for Biomass Cultivation and its Energy Recovery
Authors: Dunca Emilia-Cornelia , Lazăr Maria , Danciu Ciprian-Gheorghe , Madear Camelia , Varga Lucia-Ana
Published: December 2024

The work is part of the efforts to restore unproductive land in a green and circular economy. The results of the research carried out on non-productive land in the Jiu Valley are presented regarding the suitability of the soil and the cultivated biomass for its energy utilization and obtaining the digestate as fertilizer. The traceability of heavy metals from soil to biomass and the suitability of using biomass for its energy recovery are evaluated.
Selection of Post-Quarrying Land Uses in Western Macedonia, Greece, Using a Hybrid Multi-Criteria Method
Authors: Pagouni Chrisoula , Pavloudakis Francis , Kapageridis Ioannis , Karlopoulos Evangelos
Published: December 2024

The region of Western Macedonia is rich in mineral resources. Over the past decades, it has been primarily focused on lignite mining, while also maintaining smaller-scale extraction activities for olivine, attapulgite, talc, calcium carbonate, dolomite, gypsum, marble, slate, and aggregates, which hold significant economic value. This study recorded active public, private, and municipal quarries as well as inactive public and municipal quarries requiring rehabilitation. Furthermore, a methodology was developed and applied for screening three of the inactive municipal quarries and selecting the more suitable land use for each one. For this purpose, the authors assessed opportunities and risks at the regional level and identified strengths and weaknesses specific to each quarrying site carrying out a SWOT analysis. Criteria for selecting between alternative land uses were then determined. An expert panel including geologists, mineral resource specialists, environmental engineers, regional and municipal officials, legal experts, chamber of commerce representatives, and quarry company board members was convened to evaluate these criteria, with weights assigned using the Analytic Hierarchy Process (AHP). Attributes with spatial variation were mapped using GIS, and the final ranking of land uses for each quarry site was determined using a simple algorithm. The scope of this study was to contribute to the development of communities located close to quarries by supporting the selection of the optimum post-quarrying land uses.
Approaching Human Error in Industrial Settings: Memento for Romanian Occupational Health and Safety Professionals
Authors: Moraru Roland Iosif , Băbuţ Gabriel Bujor , Popescu-Stelea Mihai
Published: December 2024

In recent decades, in addition to numerous work accidents in which tens of thousands of deaths, disabilities and millions of days of temporary inability to work have been recorded, we have unfortunately witnessed some major disasters and accidents due to human errors. Indeed, one of the main identified contributors to the occurrence of these undesirable events stems from latent/active human errors. In this article, we try to develop a selective synthesis of some approaches to human error, different characteristic types, models and methodologies that have been developed to support the minimization of these errors. Relevant aspects of human error are systematized, including applicable systems for effective risk management in order to provide Romanian OSH specialists with tools for deepening/understanding a decisive and - at the same time - insufficiently studied aspect at the national level.
The Importance of Residential Real Estate Characteristics in the Assessment of Selected Groups of Real Estate Market Participants
Authors: Sajnóg Natalia , Jaskólska Monika
Published: December 2024

The price and market value of real estate is influenced by a number of attributes of an economic, legal, physical-technical and environmental nature. Some market characteristics, such as location, neighborhood or area, have a universal dimension, while others result from the specifics of the analyzed real estate segment.

The purpose of the survey was to assess the importance of residential real estate characteristics by real estate market participants. Two groups were surveyed. The first was made up of potential buyers and the second was made up of professionals associated with the real estate market (including appraisers, real estate agents). The results obtained were subjected to comparative and selected cross-analysis and discussion.
Anglicisms in Romanian and Serbian Hospitality and Tourism Discourse
Authors: Novakov Predrag , Lazović Mihaela
Published: December 2024

Being at the core of intercultural communication, hospitality and tourism industries have become the meeting point of different languages and cultures. Consequently, English terms, or anglicisms, are commonly integrated into Serbian and Romanian languages, particularly within tourism and hospitality contexts.

This paper analyses the impact of anglicisms on the Romanian and Serbian tourism and hospitality lexicons, offering insights into their assimilation within the respective discourses. Additionally, it deliberates upon the validity of using anglicisms in these contexts. The primary objective is to identify, analyse, and translate anglicisms found in the tourism and hospitality terminology of these two languages.

This study adopts a corpus-based approach, extracting data from various websites and promotional materials of Serbian and Romanian hotels, tourism organizations, and agencies. The findings emphasise the widespread usage of anglicisms in the discourse of tourism and hospitality, significantly influencing the Serbian and Romanian translation equivalents.
Exploring the Sound Absorption Characteristics of Biodegradable Agricultural Wastes, Coconut Fiber, Groundnut Shell, and Sugarcane Fiber
Authors: Gboe Nuushuun Archie , Ružickij Robert , Grubliauskas Raimondas
Published: December 2024

Noise pollution is a major global health issue, especially in large cities. Its effects go beyond mere annoyance, impacting health, emotions, and behavior. As noise levels rise, researchers are looking for better solutions to address this global issue, with natural fibers emerging as a promising option for sound absorption. Traditional synthetic materials used for sound absorption have negative environmental and health impacts, leading to growing interest in biodegradable natural fibers like coconut fiber, groundnut shell, and sugarcane fiber as safer alternatives. These materials absorb sound well and are environmentally friendly and safe for human health. This study explores the use of biodegradable agricultural waste fibers (coconut fiber, groundnut shell, and sugarcane fiber) for sound absorption. Samples with densities of 75 kg/m3, 100 kg/m3, and 125 kg/m3 were mixed with an equal percentage of non-toxic PVA binder. The sound absorption coefficient was measured according to the ISO 10534-2 standard. The results showed that the 75 kg/m3 sugarcane fiber sample had the highest average sound absorption coefficient of 0.94 at 800 Hz (mid-frequency range: 500–2000 Hz). The 125 kg/m3 coconut fiber sample came next, with the highest average sound absorption coefficient of 0.91 at 1000 Hz (mid-frequency range: 500–2000 Hz). The groundnut shell material showed the lowest sound absorption coefficient, the sample with a density of 125 kg/m3 had the highest average sound absorption coefficient of 0.81 at 3150 Hz (high-frequency range). These findings suggest that these natural materials could be effective for noise reduction in places like classrooms, libraries, and cafes. The approach aligns with global sustainability efforts while addressing the issue of noise pollution in large cities.
Assessment of the Filtration Stability of the Flood Control Levee on the Little Danube
Authors: Bednárová Emília , Škvarka Juraj , Grambličková Danka
Published: December 2024

Some of the accompanying phenomena of climate change that have been documented include extreme hydrological events. These significantly influence the hydrological regime of river basins, leading to more frequent occurrences of hydrological extremes such as floods and periods of drought (Melo et al., 2012, Svoboda et al., 2000). Long-term drought periods highlight the urgency of constructing water structures to create large-capacity artificial reservoirs to ensure water supplies during periods of scarcity. Intense short-term rainfall events underscore the increased need for flood control measures. Flood control levees are a significant component of flood control measures (Kotaška and Říha, 2023). Many of them, such as the Danube flood control levees, whose construction dates back to the reign of Maria Theresa (Pekárová et al., 2013; Halmová and Pekárová, P 2020), have been in operation for centuries. Considering their age, the long-term impact of hydrodynamic loading, as well as changing conditions, including hydrological, morphological, geological factors, etc., these water structures require attention. They include the right-bank flood control levee of the Little Danube River. This paper focuses on an analysis of the risk factors for the filtration stability of the levees’s subsoil under extreme hydrodynamic loading and the methodological approach applied in optimizing planned measures.
Incorporating Waste Plastic Bottles as an Additive in Asphalt Mixtures through a Dry Method
Authors: Bilema Munder , Mohamed Ahmed , Atiq Ibrahim , Maftah Salah , Alsaiti Ashraf Masoud
Published: December 2024

The rise in plastic waste is attributed to the varied types and sizes of containers used for liquids like mineral water, oils, detergents, etc. This increase in solid waste, which is driven by population growth, developmental activities, and changes in lifestyle, has led to a significant global issue. Plastic waste, known for its durability and lack of aesthetic appeal, poses a challenge in its disposal. This study aims to explore the Marshall engineering properties of asphalt mixtures infused with recycled plastic from water bottles (polyethylene terephthalate or PET) at concentrations of 0.25%, 0.5%, 0.75%, and 1% relative to the weight of the aggregates. The findings indicate that the inclusion of plastic improves the asphalt's stability to a certain point, beyond which its effectiveness diminishes due to the excessive plastic content. The study establishes that incorporating 0.5% plastic into the asphalt mixture meets all the criteria of the Marshall test, including stability, flow, air voids, VMA, and VFA. Therefore, it is concluded that 0.5% is the optimal percentage for the addition of plastic to enhance the Marshall properties of an asphalt mixture.
An “Integration Index” for Determining the Degree of Subsystem Integration in Passenger and Transport Aircraft Designs
Authors: Loginov Vasyl , Anipko Oleg
Published: December 2024

This study addresses the scientific and technical challenge of evaluating the integrative properties of the complex technical system comprising an aircraft’s airframe and power plant during the phase of work on the preliminary design or modernization of passenger and transport aircraft. A novel “integration index” is proposed, which quantifies the degree of subsystem integration or compatibility by considering thrust, aerodynamic, and geometric characteristics, alongside design and layout solutions. The integration index may streamline early-stage parametric studies, by reducing design variants. The integration index’s dependencies on the characteristics of the aircraft engine and airframe are examined. The proposed approach can be used to conduct parametric studies at the stages of preliminary variant design of aircraft subsystems. This, in turn, will reduce the cost and time of designing new, significant upgrades of existing aircraft and their components. The methodology offers a practical tool for evaluating hybrid-electric and conventional aircraft systems, thus guiding the development of innovative and competitive aviation technologies.
The Commercial Operations of UAS Within the Framework of the Exististing International Regime Applicable to Air Carriers
Authors: Kunert-Diallo Agnieszka , Balcerzak Tomasz
Published: December 2024

This study explores the legal framework governing cross-border operations of Unmanned Aircraft Systems (UAS), highlighting the pressing need for a unified regulatory environment to match the rapid advancements in UAS technology. As UAS operations increasingly align with international air services, this study draws parallels between UAS governance and the regulation of airlines, which are currently authorized to provide international air services under air transport agreements. The analysis focuses on the applicability of both international law and EU regulations to UAS operations, particularly in the context of scheduled, non-scheduled, and cabotage services. It examines certification and licensing requirements under EU regulations, identifying their potential to serve as models for future international standards. Overall, this study contributes to the understanding of regulatory challenges and opportunities, emphasizing the importance of harmonized global standards for the effective integration of UAS into international aviation.
The Impact of the European Deforestation-Free Regulation on Trade Relations With Southeast Asia
Authors: Simonnet Andrea
Published: December 2024

As political and trade ties deepen between the European Union (EU) and Southeast Asia, new challenges have surfaced where EU trade laws and extraterritorial regulations intersect with social and environmental concerns. The EU must balance these with the development goals of its interregional partners. Notably, the EU’s sustainable forest policies have strained relations with palm-oil producers like Indonesia and Malaysia. The upcoming 2023 European deforestation-free regulation adds further tension, as its broad scope and benchmarking have sparked opposition in the forest sector. Examining these challenges highlights the existing and significant conflicts raised by the EU’s unilateral approach to climate mitigation. For the sake of the European environmental strategy’s effectiveness, as it extends beyond economic ambitions, it becomes necessary for the Union to develop a joint and suitable cooperation with its partners, to achieve political consensus while limiting trade disruptions in the forest agricultural sector.
PEMBERDAYAAN USAHA KECIL MENENGAH MEUGAH PLIEK DENGAN INOVASI SABUN BERBAHAN MINYAK PLIEK
Authors: Khathir Rita , Anizar Anizar , Muzaifa Murna
Published: December 2024

Salah satu hasil pengolahan pliek-u di Usaha Kecil Menengah (UKM) Meugah Pliek adalah minyak pliek. Kegiatan pengabdian kepada masyarakat berbasis produk teknologi tepat guna (PKMBP-TTG) ini bertujuan untuk meningkatkan kesehatan keluarga dan perekonomian UKM Meugah Pliek dengan inovasi sabun padat transparan berbahan dasar minyak pliek. Kegiatan telah dilaksanakan dengan metode focus grup discussion (FGD), transfer ilmu pengetahuan melalui sekolah lapangan, penyediaan fasilitas produksi sabun dan pendampingan. Partisipasi aktif UKM Meugah Pliek diwujudkan dengan koordinasi dan penugasan produksi sabun. Partisipasi aktif mahasiswa terlibat diwujudkan dengan memberikan konstribusi pada desain label produk dan pemasaran. Sabun pliek Aceh (SPA) yang dihasilkan layak dipakai dengan kandungan air 23-25% dan pH 10. Rendemen sabun SPA yang diperoleh adalah 700%. Hasil kegiatan adalah transfer ilmu pengetahuan dan keahlian tentang cara membuat sabun kepada UKM Meugah Pliek. Sabun ini dapat dimanfaatkan untuk kesehatan keluarga maupun dijual ke masyarakat untuk meningkatkan perekonomian. Perlu penelitian lebih lanjut untuk menguji aktivitas anti mikroba dari sabun SPA dan perlu upaya lanjutan untuk proses hilirisasi massal sabun SPA dengan upaya memeroleh izin edar Badan Pengawas Obat dan Makanan (BPOM).
SOSIALISASI SISTEM JAMINAN HALAL PADA UMKM PLIEK-U DAPOER QAISARA
Authors: Noviasari Santi , Muzaifa Murna , Rasdiansyah Rasdiansyah , Muhardina Virna
Published: December 2024

Keberadaan Usaha Mikro Kecil dan Menengah (UMKM) yang tersertifikasi halal sangatlah berpengaruh terhadap konsumen halal yang mayoritasnya muslim. Kewajiban produk yang bersertifikasi halal telah dicantumkan oleh pemerintah dalam Undang Undang Nomor 33 Tahun 2014 tentang Jaminan Produk Halal. Pelaksanaan kegiatan “Pengabdian Sistem Jaminan Halal” ini meliputi rangkaian kegiatan seperti wawancara, presentasi, dan diskusi yang terkait dengan proses sertifikasi halal. Kegiatan ini bertujuan untuk memberikan pemahaman terkait pentingnya sistem jaminan halal dan informasi mengenai tata cara pengurusan dokumen sertifikasi halal. Adapun kegiatan “Pengabdian Sistem Jaminan Halal” kepada UMKM Pliek-U Dapoer Qaisara berjalan dengan baik. Kegiatan ini memberikan pengetahuan mengenai pentingnya penerapan Sistem Jaminan Halal dalam pengembangan usaha produk Pliek-U Dapoer Qaisara. Tim pengabdi telah memberikan solusi kepada pihak UMKM untuk melakukan sertifikasi halal melalui Self Declare, karena produk Pliek-u juga diketahui tidak memiliki aktivitas yang sangat kritis dalam proses produksi nya yang mengakibatkan ketidakhalalan produk tersebut.
Pengaruh Kontrol Psikologis Orang Tua dan Kontrol Diri terhadap Perilaku Cyberbullying Remaja
Authors: Damayanti Adinda Putri , Islamiah Nur , Alfiasari
Published: December 2024

Cyberbullying adalah tindakan agresif yang sengaja dilakukan oleh individu atau kelompok melalui kontak elektronik secara berulang kali dari waktu ke waktu terhadap korban yang tidak dapat dengan mudah membela dirinya sendiri. Penelitian ini bertujuan untuk menganalisis pengaruh kontrol psikologis orang tua dan kontrol diri remaja terhadap perilaku cyberbullying pada remaja. Desain penelitian berupa penelitian eksplanatori dengan metode kuantitatif. Teknik penarikan contoh berupa voluntary sampling dengan kriteria contoh merupakan remaja usia 15-18 tahun yang aktif menggunakan media sosial dan masih tinggal bersama kedua orang tua di Kabupaten Bogor. Analisis data terdiri atas analisis deskriptif, uji korelasi, dan uji regresi linear berganda. Hasil uji korelasi menemukan korelasi negatif kontrol psikologis orang tua dengan kontrol diri remaja serta korelasi positif antara kontrol psikologis ayah dengan kontrol psikologis ibu. Selain itu, hasil uji pengaruh menemukan bahwa kontrol psikologis orang tua berupa personal attack memiliki pengaruh signifikan terhadap perilaku cyberbullying. Remaja yang memiliki kontrol diri rendah cenderung berpotensi melakukan perilaku cyberbullying.
Academic Stress and Cyberslacking in Students: The Moderating Role of Emotion Regulation
Authors: Rinaldi Martaria Rizky , Hardika Jelang , Wiyoanti Retvi
Published: December 2024

In the digital era, students increasingly rely on technology for academic purposes, yet they also face significant challenges such as cyberslacking—using the internet for non-academic activities during study time. This study investigates the role of emotion regulation in moderating the relationship between academic stress and cyberslacking among university students. A quantitative research design with a correlational approach was employed, involving 100 participants who completed online surveys assessing academic stress, emotion regulation, and cyberslacking behaviors. The Emotion Regulation Questionnaire (ERQ), Perception of Academic Stress Scale (PASS), and Cyberslacking Scale were utilized to gather data. Descriptive statistics, assumption testing, and moderation analysis were conducted using Jamovi software. The research findings indicate a significant positive relationship between academic stress and cyberslacking (Estimate = 0.69, p<0.01). Additionally, no relationship was found between emotion regulation and cyberslacking (p>0.05). Furthermore, the interaction between academic stress and emotion regulation on cyberslacking was also not significant (p>0.05). Specifically, students with lower emotion regulation exhibited a stronger association between academic stress and cyberslacking, while those with higher emotion regulation showed a reduced impact. These findings highlight the importance of effective emotion regulation in mitigating the negative effects of academic stress on cyberslacking.
The Concepts of Health and Illness of Children Living with HIV in Jakarta, Indonesia: Implications for Future Programs
Authors: Thomas Catherine , Irwanto  , Weny Savitry Sembiring  , Hana Panggabean  , Rustono Farady Marta
Published: December 2024

Studies on children’s concepts of health and illness mostly took focus on the views of healthy children. As children living with HIV face different challenges, it is essential to gain more understanding on their views on health and illness. The study used a guided drawing activity followed by a semi-structured interview. Thematic coding was done to analyze of the interview data. There were three categories formed both on the concepts of health and illness: The biomedical, psychosocial, and healthy lifestyle representation. To children living with HIV, the concepts hospitals, hospitalization, medications, doctors, and symptoms of being sick are common to them. Children revealed the emotional fatigue from being regularly sick and hospitalized, being discriminated and having to pay medical bills as consequence of having poor health. On the other hand, children also acknowledged the positive consequences of being healthy (e.g. playing without being discriminated, being able to celebrate the next birthdays). The study concluded that the ongoing health education programs for children with HIV should incorporate the positive consequences of being healthy, instead of focusing heavily on medical-related topics. Having a positive outlook will hopefully motivate these children to adhere to their medications and therefore improve their quality of life.
#009 Reabilitação imediata com coroa dentária natural – relato de caso clínico
Authors:   Universidade Fernando Pessoa, Castro Inês , Tavares Bernardo Bernardo ,   Universidade Fernando Pessoa, Neves Helena ,   Universidade Fernando Pessoa, Correia Patrícia ,   Universidade Fernando Pessoa
Published: December 2024

Introdução: A ausência de um dente anterior pode afetar psicologicamente o indivíduo e influenciar a forma
como este se apresenta socialmente. Na sequência da perda de um dente anterior, é crucial providenciar uma substituição imediata para manter a estética, a função e a preservação do espaço edêntulo. Este resumo relata uma
técnica clínica de substituição dentária imediata, que utiliza a coroa natural do dente para fornecer uma solução
estética, funcional e economicamente viável. Descrição do
Caso Clínico: Paciente do sexo feminino de 79 anos, com
histórico de osteoporose e cancro da mama. Apresenta-se
na consulta da Clínica Universitária, com queixas relativas
ao dente 42. O exame intra-oral revelou boa higiene oral,
edentulismo parcial mandibular. Clinicamente, o dente 42
apresentava mobilidade moderada, cor A4, de acordo com
a escala VITA. Foi realizada uma radiografia periapical que
evidenciou uma fratura vertical completa, sem lesão periapical. Nestas circunstâncias, foi proposta a realização da
exodontia do 42, com posterior reabilitação protética. A paciente referiu ser incapaz de suportar a realização da reabilitação protética. Por este motivo, propôs-se a reabilitação
unitária com a coroa do seu dente natural. Assim, procedeu-se à extração atraumática do 42, com sutura. A coroa
clínica da peça dentária foi preparada, de modo a manter a
altura e forma adequadas da coroa, para evitar trauma na
mucosa e interferência oclusal. A coroa foi ferulizada aos
dentes adjacentes, através de técnica adesiva com resina
composta. Posteriormente, verificou-se a oclusão dentária.
A paciente recebeu instruções de higiene oral e uma consulta de controlo foi agendada. Discussão e Conclusões: Em
determinadas situações, o uso do dente natural, como pôntico, oferece vantagens, como a adaptação perfeita em tamanho, forma e cor, além de proporcionar benefícios psicológicos positivos ao paciente. A coroa dentária íntegra
pode ser fixada aos dentes adjacentes, utilizando materiais
restauradores. É importante personalizar o plano de tratamento na reabilitação oral, considerando questões como a
estética, a função, o tempo e o custo da reabilitação. Neste
caso, a opção de tratamento, além de economicamente viável, ofereceu a vantagem de ser imediata e exequível com
materiais de uso diário no consultório dentário. Esta abordagem individualizada respondeu às exigências estéticas e
funcionais da paciente, no contexto de um tratamento imediato e sustentável.
FIGURE OF MERIT STUDY FOR VALVELESS PIEZOELECTRIC MICROPUMP DESIGNED TO HANDLE LIQUID AND GAS FLUID IN MEDICAL AND ENVIRONMENTAL APPLICATIONS
Authors: Bouzid Asma , El Amine Brixi Negassa Mohamed , Pirastesh Parastesh , Charrier Joel , Soulimane Sofiane
Published: December 2024

Micropumps are revolutionizing compact and autonomous monitoring systems due to their portability and efficiency. In this paper, we present a valveless piezoelectric micropump design. This micropump distributes gas and liquid using a PDMS membrane that moves in response to a force applied by a piezoelectric actuator. The proposed design aims to achieve an average flow rate between 10 μl/min and 100 μl/min, while emphasizing mobility and low energy. For these specifications, a figure of merit (FOM) is evaluated through a parametric study of piezoelectric membrane to achieve optimized micropump performance for both gas and liquid. The finite element analysis shows the optimum thickness of PZT and PDMS, delivering a significant flow rate of 79 μl/min for liquid and 50 μl/min for gas at a lower voltage of 9 V, 60 Hz. These promising results show immense potential of micropump design in diverse applications, from intricate lab-on-a-chip platforms to precise drug delivery systems, and even integration into medical and environmental sensors.
SIMULATION OF FLUID-STRUCTURE INTERACTION IN AN ARTERY ALTERED BY SEGMENTAL MEDIOLYSIS
Authors: Mohellebi Mouloud , Ferrouk Mohamed , Tebbiche Hocine
Published: December 2024

Segmental arterial mediolysis (SAM) is an asymptomatic, non-atherosclerotic and non-inflammatory disease of unknown etiology. It affects medium-sized arteries and is characterized by vacuolization and lysis at the level of the media which can lead to dissection, steno-occlusion, or an aneurysm. In this article, a simulation of fluid-structure interaction in an artery altered by segmental mediolysis was reported. The study showed that the reduction in elasticity of the media layer of the artery due to the deterioration of collagen has little influence on the velocity field, the pressure field as well as on the deformations of the artery, thus conferring a silent and asymptomatic character to the pathology. The Von-Mises stress is very high at the level of the intima which can lead to arterial dissection with the appearance of a false channel. An increase in the Von-Mises stress of around 375 % was predicted by the COMSOL code. The combined effect of mediolysis and the increase in blood pressure causes increases in the Von-Mises stress at the level of the intima and the adventitia which are respectively 6.10 and 4.62 times greater than those of the healthy artery, which demonstrates that hypertension could be a determining factor in triggering arterial dissection.
EFFECTS OF GAS RADIATION AND ACCELERATED FLOW ON SOLAR HEATER PERFORMANCE
Authors: Abdolreza Gandjalikha Nassab Seyed
Published: December 2024

In this paper, the performance enhancement of solar gas heaters is evaluated by taking the advantage of both radiating gas effect and using converged ducts with the accelerated flow. The analyzed solar gas heater includes the glass cover, air gap, absorber, gas channel, bottom plate, and insulation. The inclined position of the bottom plate relative to the absorber provides a converged shape for the duct of the heater. For the free convection airflow inside the air gap and forced convection gas flow in the heater’s duct, the CFD-based numerical simulations are carried out by the finite element method via the COMSOL software. Numerical results reveal the positive effect of gas radiation with the fact that in the downstream side of gas flow with a small convection coefficient, the gas accelerated flow with extra turbulence breaks down the thermal boundary layer and augments the convection heat transfer rate. For the studied test cases, 18% and 8% increases in thermal efficiency are observed due to the gas radiation and inclined position of the bottom plate, respectively. Consistency between the obtained numerical findings and experimental data shows the accuracy of the applied numerical method.
OPTIMIZING TORP MIDDLE EAR PROSTHESIS MATERIAL PERFORMANCE USING FGM MATERIAL DEGRADATION APPROACH
Authors: Omar Khatir , Sidi Mohamed Fekih , Abderahmene Sahli , Ismail Boudjemaa , Abdelkader Benkhettou
Published: December 2024

The advancement of technology in the field of human health plays a significant and positive role, particularly in the realm of hearing. In this study, we propose a novel approach for middle ear prostheses. We constructed a finite element (FE) model of the ear with a pure titanium TORP prosthesis, which we validated using experimental results. Subsequently, we applied the FGM (material degradation) method to alter the prosthesis material, utilizing biocompatible materials that can be used as hearing prostheses. We found that steel and hydroxyapatite ceramic can be used as alloys with titanium, and even customized prostheses can be manufactured according to patients needs.
FATIGUE ANALYSIS BASED ON FATIGUE FAILURE APPROACH AND DAMAGE TOLERANT APPROACH IN CORONARY STENT DESIGN
Authors: Jovičić Gordana , Vulović Aleksandra , Vukićević Arso , Đorđević Nenad , Filipović Nenad
Published: December 2024

Over the last few decades, cardiovascular stents have emerged as crucial biomedical devices. Stents undergo cyclic physiological loading, which can lead to progressive accumulation of structural damage over time eventually resulting in a stent fracture. Considering the critical role of stents, it is necessary to assess their fatigue endurance and predict a potential premature failure due to fatigue loading. This paper presents a comprehensive analysis of coronary stent design based on both fatigue failure and damage-tolerant approaches. Employing the fatigue failure approach, S-N analysis was conducted to pinpoint the critical zones of the stent. Initial resistance to fatigue was evaluated using Goodman's and Soderberg's criteria. These criteria were applied to principal and effective stresses obtained using the Finite Element Method. Susceptibility to fatigue damage was performed by simulating the initial crack growth, and it was assessed through the Paris power law. The damage-tolerant approach yields more conservative fatigue stress ranges compared to fatigue failure criteria, ensuring safety under standard physiological loading conditions. The presented approach offers reliable insights into stent durability, with potential for further enhancement.
The impact of pre-admission nutritional interventions on patient outcomes after major elective surgery: a systematic review and meta-analysis
Authors: Basnawi Abdullah , Alfaraj Fatimah , Alharbi Lujain , Alrufayyiq Nada , Alassaf Talal , Almutiq Abdulrahman , Alhazmi Mohammed , Alqarni Saleh , Albishi Reem , Nasr Khaled , Alshammari Abdulrazaq , Alomari Lubna , Sarhan Rayan
Published: December 2024

Nutritional health is crucial for recovery and outcomes following major elective surgery, with malnutrition linked to an increased risk of complications, longer hospital stays, and slower recovery. Pre-admission nutritional interventions, including meal counseling and supplements, increase patient resiliency and improve surgical outcomes. This systematic review sought to evaluate the effectiveness of such therapies, giving significant insights for improving preoperative care and modifying clinical guidelines. This study used four data-bases by the Cochrane Handbook and preferred reporting items for systematic reviews and meta-analyses recommendations. Two writers independently screened and chose randomized controlled trials (RCTs). The study looked at outcomes such as Length of stay (LOS), surgical complications, and mortality. Bias was calculated using the Cochrane Risk of bias revised tool (ROB2), and Revman was used to conduct the meta-analysis. The risk ratios (RRs) and pooled mean differences were employed to evaluate outcomes, with significance set at p < 0.05. The search approach initially identified 803 studies, with seven RCTs included in the final review. The meta-analysis found no statistically significant effects on critical outcomes such as LOS, postoperative complications, or mortality. Although there was a trend toward shorter LOS (pooled mean difference of -0.54 days, 95% CI: -1.37 to 0.29, p-value = 0.20) and a 16% reduction in postoperative complications (RR 0.84, 95% CI: 0.62 to 1.15, p-value = 0.28), neither outcome was statistically significant. Similarly, there was no significant difference in mortality between the intervention and control groups (RR 1.18, 95% CI: 0.23-6.11, p-value = 0.85). The meta-analysis revealed no statistically significant impact of pre-admission dietary treatments on LOS, complications, or mortality. Thus, future research should focus on improving intervention methods, identifying patient subgroups that might benefit the most, and integrating various components of perioperative care.
Potential benefits of using inhalers in interstitial lung disease (ILD): a review article
Authors: Maither Abdallah
Published: December 2024

Interstitial lung disease (ILD) is a generic term encompassing over 200 pulmonary disorders that affect the interstitium of the lung to a variable extent concerning inflammatory and fibrotic changes. This pathological remodeling typically results in restrictive lung physiology and abnormalities in exercise, presenting as increasingly severe shortness of breath. Given the variability of ILDs, these diseases create numerous difficulties in management; thus, treatment protocols to stop the progression of the disease and improve patient's quality of life should be chosen individually. This review aimed to explore the potential benefits of using inhalers in ILD. The keywords "Potential, Benefits, Using, Inhalers, Interstitial Lung Disease, ILD" were used to conduct a thorough literature search in the MEDLINE database to find relevant publications published between 2016 and 2024. Using the proper search terms, Google Scholar was utilized to find and access pertinent scientific publications. Various inclusion criteria were used to choose which articles to select. The research included in this study was published from the years 2016 to 2024. The traditional management of ILD entails the use of systemic therapies to address inflammation and fibrosis simultaneously in a manner that depends on the disease subtype, its severity, and the patient's characteristics. Further study of the factors involved in the development of ILD is highly needed to help devise specific treatments accordingly. Ultimately, further research and clinical correlation would necessarily refine the practical employment of this marker in PH-ILD.
Mięśniowo-powięziowa zależność pomiędzy obszarem orofacjalnym i miednicznym
Authors: Zawojska Klaudia
Published: December 2024

Pomiędzy wszystkimi segmentami ciała występują połączenia mięśniowo-powięziowe, co sprawia, że ludzkie ciało jest łańcuchem wzajemnych zależności, a każda zmiana w jego obrębie będzie skutkowała uruchomieniem wielopoziomowego mechanizmu kompensacji. Celem niniejszej pracy był przegląd dostępnej literatury w zakresie zależności mięśniowo-powięziowych w obszarze intraoralnym i w rejonie miednicznym, a także analiza tych zależności.
Trening miofunkcjonalny w ujęciu fizjologii wysiłku fizycznego
Authors: Koprowski Piotr , Siudak Anna
Published: December 2024

Terapia ruchem, rozumiana jako specyficzny trening mięśniowy, jest kluczowym narzędziem w terapii aparatu ruchu, a więc również w obrębie miofunkcjonalnych działań logopedycznych. Termin ‘trening miofunkcjonalny’ wskazuje kierunek, w którym należy upatrywać trwałych rozwiązań problemów ruchowych. Niniejszy artykuł ma na celu zarysowanie podstaw fizjologii mięśni, stanowiąc bazę do rozwijania wiedzy terapeutów i stosowania zagadnień fizjologii wysiłku fizycznego w kontekście planowania terapii lub – precyzyjniej mówiąc – programowania treningu miofunkcjonalnego.
Głos w subiektywnej ocenie studentów kierunków humanistycznych
Authors: Marszałek Marta
Published: December 2024

Świadome posługiwanie się głosem wymaga dużego zaangażowania ze strony nadawcy, by móc brzmieć w sposób dźwięczny i przyciągający uwagę odbiorcy. Poznanie zasad powstawania zdrowego głosu pozwala na dostrzeżenie własnych potrzeb i możliwości w kształceniu prawidłowych wzorców oddechowych, fonacyjnych i artykulacyjnych. Przestrzeganie ich chroni przed ryzykiem wystąpienia czynnościowych zaburzeń głosu. W artykule przedstawiono badania z wykorzystaniem kwestionariusza samooceny głosu VHI, przeprowadzone wśród studentów kierunków humanistycznych. Wyniki pokazały nie tylko kondycję ich głosu, ale także świadomość barier, które występują podczas różnych sytuacji społecznych. Może być to wstęp do wyznaczenia standardów kursu emisji głosu dla studentów.
Wydłużenie podniebienia miękkiego a funkcje prymarne
Authors: Pawłowska-Jaroń Halina
Published: December 2024

Częstą komplikację w leczeniu niewydolności podniebienno-gardłowej, będącej wynikiem nieprawidłowości anatomo-fizjologicznych, stanowi zbyt krótkie podniebienie miękkie, którego rolą jest udział zarówno w czynnościach fizjologicznych, jak i nadawaniu mowy. Procedurą leczniczą w takim przypadku jest zabieg wydłużenia podniebienia miękkiego. W rozwoju chirurgii dziecięcej wprowadza się wiele technik chirurgicznych, które mają optymalizować zarówno przebieg rekonstrukcji, jak i powrót do maksymalnie zbliżonej do prawidłowej anatomii i fizjologii tego obszaru. Niniejszy tekst prezentuje pilotażowe wyniki uzyskane w zakresie przywracania funkcji prymarnych po zabiegu wykonanym techniką wydłużenia podniebienia miękkiego za pomocą podwójnych przeciwstawnych płatów policzkowych (Double-Opposing Buccal Flaps). Równocześnie, nawiązując do obecnych w badaniach medycznych tendencji, by w kontekście procedur medycznych brać pod uwagę jakość życia pacjenta, porównano komfort czynności prymarnych przed i po zabiegu w ocenie samych pacjentów dziecięcych i ich rodziców.
Neurobiologiczne podłoże stymulacji rozwoju funkcji językowych dziecka za pomocą frazy melodycznej
Authors: Peterek Magdalena
Published: December 2024

Obserwując rozwój filogenetyczny i ontogenetyczny człowieka, można zauważyć, że podstawą ruchu, niezbędnego zarówno dla rozwoju organizmu, jak i nawiązania interakcji społecznych, jest rytm. Pierwotne formy komunikacji oparte na ruchu, w tym ruchu tanecznym, ewoluowały w kierunku komunikacji w języku fonicznym. Autorka artykułu szuka punktów wspólnych pomiędzy frazą melodyczną i frazą językową, wskazuje na struktury w korze słuchowej, aktywizujące się w czasie percepcji dźwięków instrumentalnych i językowych. Przedstawia obiektywne badania, które udowadniają, że wykształcenie muzyczne nie jest obojętne dla poziomu umiejętności językowych. Wiedza ta otwiera zupełnie nowe możliwości terapeutyczne. Zaplanowany trening muzyczny doprowadza do zmian strukturalnych i funkcjonalnych w mózgu dziecka, co zwiększa jego zdolności poznawcze i umiejętności przetwarzania językowego.
Recent Developments in Low-Temperature Solution-Processed Metal Oxide Electron Transport Layers for Perovskite Solar Cells
Authors: Noman Hafiz Muhammad , Hasan Muhammad Tahir , Jan Muhammad Anwar , Ahsan Khan Muhammad Umair , Qureshi Akbar Ali
Published: December 2024

With power conversion efficiency (PCE) exceeding 25%, perovskite solar cells (PSC) have become known as a remarkable photovoltaic technology in the last few years. Further, the low preparation temperature and facile processing techniques specifically in the planar architecture have contributed immensely to the production of inexpensive solar devices. The charge transport layers, primarily the electron transport layer (ETL) play a significant role in efficient charge extraction and transport from the absorber layer to the respective electrode. In particular, numerous research have been carried out. on the oxides of metal (MOX) based ETL owing to their exceptional optoelectronic characteristics, low cost, and remarkable adaptability. This review deals with the application of newly developed MOX-based ETLs processed at low temperatures for planar PSC. The optical and electrical characteristics of widely used MOX ETL were briefly investigated and explored for impact on the photovoltaic (PV) stability and performance of halide PSC. In the end, the future perspective on the MOX ETL was also offered.
Urbanization and Urban Government Organization Models in some Countries: Lessons and Recommendations
Authors: Huong Nguyen Thi
Published: December 2024

Abstract: 
In recent decades, urbanization has emerged as a global phenomenon. The migration wave, urbanization, and urban development have driven many countries to research and discover appropriate urban governance models for new situations. The research and findings of standard governance models and urban governance models are not only urgent but also hold long-term strategic importance. The article provides a general overview of the current state of urbanization, explores some typical urban governance models around the world, draws key lessons, and proposes solutions to improve legislation on the organization of urban government to meet national development requirements.
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