bluuebunny/crossref_metadata_2025 huggingface dataset:
Investigation of The Abrasive Wear Behavior of GFRC And CFRC with Different Parameters Using Taguchi And Artificial Neural Networks Method
Authors: Demir Mehmet Emin
Published: January 2025

Fiber-reinforced composites are increasingly being utilized in various sectors, including aerospace, maritime, electronic components, and in elements exposed to wear such as bolts, nuts, cams, and gaskets. This study aims to determine the optimal processing parameters in abrasive wear tests conducted under varying wear conditions on glass and carbon fiber-reinforced composites. Employing a mixed-level L36 Taguchi orthogonal experimental design, tests were conducted on a pin on disk apparatus under different loads, sliding distances, and speeds. The results indicated that the most significant parameters affecting the coefficient of friction (COF) and mass loss were the type of fiber and the load. It was observed that an increase in load, sliding distance, and speed augmented the COF and mass loss. Predictions of the coefficient of friction and mass loss were made using a model developed in Artificial Neural Networks (ANN), and these predictions were compared with experimental results. The R2 overall regression values for COF and mass loss in ANN were calculated as 0.98939 and 0.98349, respectively. ANN was found to provide more consistent results in predicting COF and mass loss compared to the Taguchi method.
Effect of baseline values on inpatient rehabilitation outcomes after total knee arthroplasty: a retrospective observational study
Authors: Missmann Martin , Fischer Michael J.
Published: January 2025

Objective: To compare inpatient rehabilitation outcomes after total knee arthroplasty (TKA) between groups with different baseline scores.
Design: A retrospective observational study.
Subjects: Patients with knee osteoarthritis who have previously undergone unilateral TKA.
Methods: Patients participated in 3-week inpatient rehabilitation following TKA and were assessed for patient-reported outcome measures (PROMs), which included the Numeric Pain Rating Scale (NPRS), the Health Assessment Questionnaire (HAQ), the European Quality of Life 5 Dimensions 5 Level Version (EQ-5D-5L), and the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC). Furthermore, mobility scores for the range of motion (ROM) and the Timed Up and Go (TUG) test were recorded at the beginning and the end of rehabilitation. Patients were divided into quartile groups based on their initial examination scores.
Results: 329 patients were enrolled in the study. The study population consisted mostly of female patients (63.8% vs 36.2%) with a mean age of 68.25 (SD 9.24) years. The personalized 21-day in rehabilitation programme was safe for all patients and had no dropouts. Patients with better PROMs scores at T1 did not have the same potential for improvement in PROMs but showed effective improvement in mobility (η² = 0.103 for changes in the WOMAC vs η²=0.502 for changes in the TUG test).
Conclusion: Regardless of the baseline scores, all patients presented significant improvements in both subjective and objective measures. Age and baseline PROMs or mobility scores did not have a significant effect on score development.
Impact of Ground Flaxseed on Methane Reduction and their Influence on Nutrient Digestibility In-vitro
Authors: Singh Gurjinder , Singh Gurpreet , Hundal Jaspal Singh
Published: January 2025

The current study was carried out during the period of October, 2018 to March, 2019 at the Department of Animal Nutrition, College of Veterinary Science, Guru Angad Dev Veterinary and Animal Sciences University, Ludhiana, Punjab, India to assess the effect of the Ground flaxseed supplemented at 0, 5, 10, 15 and 20% of TMR on DM basis on in-vitro gas output and fiber degradation. Regardless of the levels of ground flaxseed, the net gas production (NGP) in flaxseed supplemented groups (5–20% level) was lower than control. The partitioning factor (PF) of flaxseed supplemented groups was significantly greater in relation to reference group. The NDF digestibility remained unaffected at supplementation levels ranging from 5% to 15% flaxseed compared to the control. However, it dropped significantly (p<0.01) with flaxseed supplementation at the 20% level. Although, ME availability was not affected by flaxseed supplementation. Significantly (p<0.01) high levels of acetate were observed in control than flaxseed supplemented groups at 15% and 20% levels. Relative proportions of butyrate and fermentable carbon dioxide varied significantly at 5% and 15% levels of flaxseed supplementations. Regardless of the level of flaxseed, methane percent of NGP, methane 100 mg-1 DDM and methane 100 mg-1 DOM depicted a significant reduction (p<0.01) relative to the control. Ammonia nitrogen levels remained unchanged across all levels of flaxseed supplementation. In conclusion, flaxseed supplementation mitigated the methane production and improved the digestibility without affecting ME availability.
Estimating Vegetation Density Dynamics, Tree Diversity, and Carbon Stock in the Agroforestry System of the Community Forest in Bogor Regency, Indonesia
Authors: Hartoyo Adisti Permatasari Putri , Karlinasari Lina , Setiajati Fitta , Wijayanto Arif Kurnia , Rifana Haikal Zaky , Madani Hilmi Naufal , Satriawan Handi , Rahmawati Rita , Siregar Ulfah Juniarti
Published: January 2025

Mitigation actions to address climate change are essential to prevent future adverse impacts, with woody species in forests playing a pivotal role in carbon storage, as exemplified by the agroforestry systems commonly practiced in community forests of Bogor Regency, which integrate woody species and crops. This study aimed to analyze changes in vegetation density using the Normalized Difference Vegetation Index (NDVI) approach, analyze stand structure and composition, and estimate above-ground carbon stocks in the agroforestry land of community forest in Tenjolaya Sub-District, Bogor Regency. The methods used were spatial analysis with NDVI, vegetation analysis, and carbon stock estimation using allometric and destructive methods. The plot size was 50 m × 50 m, totaling 21 plots. NDVI analysis resulted in low density (0.59–0.67), moderate density (0.67–0.78), and high density (0.78–0.85). This study found 178 plant species across 40 families, with Fabaceae and Myrtaceae being the most dominant. The carbon stock is 27.69 tons carbon/ha. Carbon stock is significantly influenced by tree density, number of species, and basal area values. A well-managed community forest has high ecological, economic, and social potential through the development of agroforestry, which can maintain biodiversity and environmental sustainability while storing carbon stocks.
Keywords: above-ground carbon, agroforestry, community forest, normalized difference vegetation index, vegetation density
Tooth Ankylosis: Etiology, Diagnosis and Treatment Review and Case Series
Authors: Doufexi Aikaterini-El , Masali Eleni , Christoforidou Efhtalia , Kefalogiannis Ioannis
Published: January 2025

Tooth ankylosis is a type of tooth eruption disorder, which results in the fusion of cementum and alveolar bone, whereas the periodontal ligament is gradually replaced by alveolar bone. Tooth ankylosis can occur in both erupted and impacted teeth. The most common ankylosed impacted teeth in the adult population are the maxillary canines creating functional and esthetic issues. This review analyzes the etiology, diagnosis and treatment of ankylosed impacted teeth. Four clinical cases are also presented, displaying different treatment options for ankylosis of impacted teeth.
Cahier d´exercises Le petit Vagabond et Clara vol. 2 - Pracovný zošit Tuláčik a Klára diel 2
Authors: Jamborová Diana , Chovancová Katarína , Pavlovičová Miriam , Pecníková Jana , Zázrivcová Monika
Published: January 2025

Vous êtes désormais en possession d'un matériel didactique destiné aux enfants évoluant dans des familles mixtes franco-slovaques et dont la seconde langue est le slovaque. Ce matériel didactique consacré à la langue slovaque a été élaboré par des équipes universitaires de l'INALCO Paris et de l'Université Matej Bel de Banská Bystrica.
Bizonyítékok és kockázatok – Az időskori diabétesz kórlefolyásának módosítása
Authors: Domboróczki Zsolt
Published: January 2025

A betegséglefolyást módosító antidiabetikumok, korszerű inzulinok és a diabetológiai technológia fejlődésének az idős cukorbetegek is nyertesei lehetnek. Egyre növekvő létszámú és egyre szélesebb spektrumon mozgó populáció, mely a klinikai vizsgálatokban nincs jelentőségének megfelelően képviselve. Ugyanakkor az időskori hatékonyságról, biztonságról és célszervvédelemről is meggyőző alcsoportanalízis-adatokkal rendelkezünk. A kardiorenális protekció mértéke az SGLT-2-gátló és GLP-1-receptoragonista vegyületeknél hasonló, egyes esetekben nagyobb, mint a fiatalabb diabéteszes korcsoportoknál. Másfelől a célszervvédelem időskorban nem csak a szív-érrendszer és a vese, hanem a mentális és szomatikus állapot megóvása, vagyis az idegrendszer és a mozgásrendszer védelme szempontjából is értelmezhető. A glikémiás kontroll és a hipoglikémiamentes terápia mellett e tekintetben is szerepet kap a metformin, a DPP-4-gátlók, a GLP-1-receptoragonisták és SGLT-2-gátlók. Alapvető kérdés, hogy a páciens jellemzői alapján rendelkezésre áll-e a célszervvédelemhez szükséges idő, vagy meg kell elégedni a maximálisan biztonságos kezeléssel. A lehetőségek mellőzése és a túlkezelés egyaránt veszélyt jelent.
CREATIVE THINKING ABILITY OF STUDENTS WITH THEORIST AND PRAGMATIST LEARNING STYLES IN SOLVING NUMBER OPERATION PROBLEMS
Authors: Rusmana Erina Ellen , Shodikin Ali
Published: January 2025

Creative thinking skills are essential in mathematics learning to address 21st-century challenges. This study aims to describe the creative thinking abilities of students with theorist and pragmatist learning styles in solving problems on number operations. The research employed a descriptive qualitative approach, with two subjects representing theorist and pragmatist learning styles, selected using purposive sampling from 27 seventh-grade students. The research instruments included the Learning Style Questionnaire (LSQ), problem-solving tests, and interview guidelines. Data were collected through questionnaires, tests, and interviews, then analyzed based on the indicators of fluency, flexibility, originality, and elaboration. The results revealed that students with a theorist learning style tend to produce structured and logical solutions, utilizing various approaches but showing limited innovation. Conversely, students with a pragmatist learning style demonstrated more practical and flexible approaches, along with originality through unique strategies, although their accuracy depended on precise assumptions. In conclusion, creative thinking abilities are influenced by students’ learning styles. Teachers are advised to provide exercises targeting all aspects of creative thinking to enhance the variation and quality of students' solutions.Kemampuan berpikir kreatif merupakan keterampilan penting dalam pembelajaran matematika untuk menghadapi tantangan abad ke-21. Penelitian ini bertujuan mendeskripsikan kemampuan berpikir kreatif siswa dengan gaya belajar teoris dan pragmatis dalam menyelesaikan masalah pada materi operasi bilangan. Penelitian ini menggunakan pendekatan deskriptif kualitatif dengan subjek dua siswa, masing-masing mewakili gaya belajar teoris dan pragmatis, yang dipilih melalui teknik purposive sampling dari 27 siswa kelas VII. Instrumen penelitian meliputi Learning Style Questionnaire (LSQ), tes pemecahan masalah, dan pedoman wawancara. Data dikumpulkan melalui metode angket, tes, dan wawancara, kemudian dianalisis berdasarkan indikator kelancaran, keluwesan, keorisinalan, dan elaborasi. Hasil penelitian menunjukkan bahwa siswa dengan gaya belajar teoris cenderung menghasilkan solusi yang terstruktur dan logis, menggunakan berbagai pendekatan, tetapi kurang inovatif. Sebaliknya, siswa dengan gaya belajar pragmatis lebih praktis dan fleksibel, serta mampu menunjukkan keorisinalan melalui strategi unik, meskipun masih terbatas pada keakuratan asumsi. Kesimpulannya, kemampuan berpikir kreatif dipengaruhi oleh gaya belajar siswa. Guru disarankan untuk memberikan latihan yang melatih seluruh aspek berpikir kreatif guna meningkatkan variasi dan kualitas solusi siswa.
English Language Students’ Perception of Their Preparedness in Doing Online Teaching
Authors: Dhamma Satya , Triprihatmini Veronica
Published: January 2025

The COVID-19 pandemic in 2020 made students and teachers teach and learn from home. The teaching and learning experience changed to an online environment. This research was intended to explore the English Language Education Study Program (ELESP) students’ preparedness doing online teaching and their challenges in doing so.This research employed the mixed method strategy. The instruments were questionnaires and interviews. The participants were 68 ELESP students from batch 2017 in Sanata Dharma University. There were 4 participants involved in the interview.The findings of this research showed that the ELESP students perceived that they were prepared to do online teaching. The students perceived that the lessons they got in their study program were adequate to prepare themselves to conduct online teaching. However, the students were faced with some challenges in preparing for online teaching. This research concluded that technical problems, difficulties in creating a supportive environment for learning, and adapting to an online environment were the challenges that the ELESP students faced in their experience during the PLP-PP program.Keywords: preparedness, online teaching, pre-service teachers.
Progress in English Language Teaching Through English Teacher Working Group (MGMP) - Teachers’ Self-Awareness, Perception, and Feedback
Authors: Zuhairoh Zuhairoh
Published: January 2025

This paper explores the progress made in English language teaching through the English Teacher Working Group (MGMP) in Indonesia, with a specific focus on teachers’ self-awareness, perception, and feedback. The study examines the ways in which teachers engage in self-reflection, seek feedback, and refine their teaching practices to enhance their effectiveness as educators and create a conducive learning environment.  By analyzing the impact of the English Teacher Working Group program on teachers’ professional development and collaboration, the study highlights the importance of regular meetings, workshops, and collaborative projects in facilitating the exchange of ideas and best practices among teachers. Purposive sampling was used combined with a survey questionnaire and interviews to acquire the data. The findings demonstrated that self-development as an element of professional development is often viewed favorably by EFL teachers. The feedback on the English Teacher Working Group program (MGMP) showed that most teachers find the program vital for advancing their teaching skills. However, there were concerns regarding the duration of the program and the need for more time for relevant theories and feedback. Overall, the results suggest that EFL teachers have positive perceptions of self-development and the MGMP program, but there may be areas for improvement. Through this research, the concept of MGMP emphasizes the significance of self-awareness, perception, and feedback in enhancing teaching practices and fostering collaboration, contributing to the continuous improvement of English language education and the development of competent English language learners.
Analisis Kerentanan: Memanfaatkan Kerentanan dan Pengaruh Keamanan Siber pada Cloud Computing
Authors: Sakinah Aprillia , Khofipah Sangkot , Tripena Pesah Sifrah , Karoko Maria Anjelina Dewi , Fauziyah Fauziyah
Published: January 2025

Dalam era digital yang semakin maju, cloud computing telah menjadi tulang punggung bagi banyak organisasi. Kemudahan akses, fleksibilitas, dan skalabilitas yang ditawarkan oleh teknologi ini membuatnya semakin populer. Namun, di balik segala kemudahannya, cloud computing juga membawa tantangan signifikan terkait keamanan data. Mengingat sifatnya yang terdistribusi dan multi-tenant, data yang disimpan di cloud menjadi sangat rentan terhadap berbagai ancaman siber. Analisis kerentanan terhadap sistem cloud mengungkapkan bahwa data yang berada di luar kendali langsung organisasi dapat menjadi sasaran empuk bagi pelaku kejahatan siber yang terus mengembangkan taktik serangannya. Penelitian ini menggunakan pendekatan deskriptif kualitatif untuk menganalisis kerentanan keamanan data pada cloud computing. Fokus utama penelitian ini adalah pada tantangan dan risiko yang dihadapi data yang tersimpan di lingkungan cloud, mengingat sifatnya yang terdistribusi dan diakses oleh berbagai pihak. Dengan semakin banyaknya pengguna yang mengadopsi layanan cloud, peluang terjadinya pelanggaran data semakin meningkat. Oleh karena itu, pemahaman mendalam mengenai kerentanan keamanan pada cloud computing menjadi sangat penting untuk merancang strategi mitigasi yang efektif.
Sistem Informasi Perencanaan Pengadaan Obat Menggunakan Metode ABC VEN di Apotek Honesty
Authors: Kusumawardhana Muhammad Anton , Darmanto Eko , Latifah Noor
Published: January 2025

Dalam proses pengadaan obat di apotek Honesty belum ada metode yang digunakan. Untuk memutuskan pemesanan hanya dengan mengecek ke rak obat, obat mana saja yang sudah habis atau obat yang tinggal sedikit. Sehingga mengakibatkan kurangnya fokus pada obat-obatan penting, pemborosan sumber daya, dan keterlambatan dalam proses pengadaan dan kelemahan-kelemahan ini dapat berakibat pada kekurangan stok obat. Metode ABC-VEN adalah kombinasi antara Always Better Control (ABC) dan metode Vital, Essential, Non-Essential (VEN). Metode ini digunakan untuk mengelola biaya dengan mengidentifikasi aktivitas yang penting dan mengklasifikasikan obat berdasarkan tingkat kekritisan. Dengan metode ABC-VEN, apotek dapat mengalokasikan biaya secara lebih efisien. Penelitian yang akan dilakukan menggunakan metode pengembangan Waterfall. Hasil analisa akan digambarkan menggunakan model UML (Unified Modelling Language) dan diimplementasikan dalam aplikasi berbasis WEB.
PENGARUH IMPLEMENTASI STANDAR AKUNTANSI PEMERINTAH DAN PEMANFAATAN TEKNOLOGI INFORMASI TERHADAP KUALITAS LAPORAN KEUANGAN
Authors: Pongsibidang Aldorios Rielky , Nugroho Paskah Ika
Published: January 2025

Tujuan dari penelitian ini yaitu menguji pengaruh implementasi standar akuntansi pemerintah dan pemanfaatan teknologi informasi terhadap kualitas laporan keuangan pemerintah daerah Kabupaten Toraja Utara. Pengisian kuesioner dilakukan dengan mengirim link google form ke masing-masing pegawai maupun staf bidang yang terlibat langsung dalam penyusunan laporan keuangan. Teknik analisis data menggunakan regresi berganda. Hasil analisis menunjukkan bahwa implementasi SAP berpengaruh positif terhadap kualitas laporan keuangan Kabupaten Toraja Utara dan pemanfaatan teknologi informasi memiliki pengaruh positif terhadap kualitas laporan keuangan Kabupaten Toraja Utara.
PENGARUH CONTENT MARKETING, PROMOSI, DAN CUSTOMER REVIEW TERHADAP MINAT BELI PRODUK BARENBLISS PADA PLATFORM TIKTOK
Authors: Marcella Desy , Nugraha Albert Kriestian Novi Adhi
Published: January 2025

Persaingan dalam aktivitas pemasaran membuat layanan e-commerce menghadapi tantangan yang besar untuk menarik minat beli konsumen dalam membeli produk yang ditawarkan. Tujuan penelitian ini adalah untuk mengetahui bagimana pemasaran konten, promo, dan ulasan pelanggan mempengaruhi minat beli produk.  Metode yang digunakan dalam penelitian ini adalah menggunakan pendekatan kuantitatif dengan teknik pengambilan data survei secara online melalui penyebaran kuesioner menggunakan Google form. Jumlah responden sebanyak 85. Pengujian hipotesis dilakukan dengan menggunakan uji regresi linear berganda yang menunjukan bahwa: (i) content marketing berpengaruh terhadap minat beli; (ii) promosi berpengaruh terhadap minat beli; (iii) customer review tidak berpengaruh terhadap minat beli.
Fray Alonso de Molina (2022 [1555]): Aqui comienҫa un vocabulario en lengua castellana y mexicana
Authors: Medina Guerra Antonia María
Published: January 2025

Reseña de Fray Alonso de Molina (2022 [1555]): Aqui comienҫa un vocabulario en lengua castellana y mexicana
Emilio Castelar (2022): Escritos sobre literatura (ed. de Davide Mombelli)
Authors: Sánchez Lozano Carlos
Published: January 2025

Reseña de Emilio Castelar (2022): Escritos sobre literatura (ed. de Davide Mombelli)
Asunción Rallo Gruss (ed.) (2022): Arco de Sombras
Authors: Pavón Molero Victoria
Published: January 2025

Resumen de Asunción Rallo Gruss (ed.) (2022): Arco de Sombras
The beneficial effects of microalgae in promoting growth performance of poultry under heat stress conditions – a review
Authors: Abd El-Hack Mohamed E. , Khafaga Asmaa F. , Moustafa Mahmoud , Alshaharni Mohammed O. , Shati Ali , Chalati Marwa , Almahallawi Ruoa , Althubyani Sarah A. , Mahgoub Samir A. , Świątkiewicz Sylwester
Published: January 2025

Heat stress can seriously impair broiler chicken development and meat quality, so scientists are looking for sustainable additives like microalgae that might mitigate these impacts. Poultry health and productivity are seriously impacted by heat stress, which is a major concern. Incorporating compounds rich in antioxidants into the feed of chickens is crucial for addressing the problem of heat stress and maintaining the appropriate operation of the redox system. Animal and human health both benefit from the high antioxidant content of microalgae. Many researches have demonstrated that, when handled properly, microalgae can enhance immunity, nutrition, stress relief, aquatic bioremediation, disease resistance, and inhibit bacterial quorum sensing. Microalgae’s anti-cancer, anti-inflammatory, antibacterial, and antioxidant qualities contribute significantly to its ability to reduce the bad effects of heat stress. As a result, we can advise using microalgae instead of protein sources in chicken feed to lessen the harmful effects of heat stress because it has excellent properties and is reasonably priced to maximize profit.
Macronutrient and fatty acid content in selected seeds and oils and their use in diets for monogastric animals
Authors: Milewski Szymon , Fabjanowska Julia , Kiczorowska Bożena , Samolińska Wioletta , Klebaniuk Renata , Kowalczuk-Vasilev Edyta , Moczulska Magdalena , Bielak Agata , Kiczorowski Piotr , Kocira Sławomir
Published: January 2025

Oilseeds play a key role in the nutrition of monogastric animals. The aim of the study was to analyze the basic chemical composition of various seeds: canola (Brassica napus L. var. napus), camelina (Camelina sativa (L.) Crantz), hemp (Cannabis sativa L.), soybean (Glycine max (L.) Merr.), nettle (Urtica dioica L.), grape (Vitis vinifera L.), sunflower (Helianthus annuus L.), and wheat germ (Triticum aestivum L.) and determine the fatty acid profile of oils extracted from these seeds. The nettle seeds had the highest crude ash content (12.96 g·100 g−1 dry matter, P=0.014). The soybean seeds were characterized by the highest crude protein content (38.02 g·100 g−1 dry matter, P=0.021). The sunflower seeds contained the highest ether extract content (53.1 g·100 g−1 dry matter, P=0.019) and the lowest crude fiber levels (2.23 g·100 g−1 dry matter, P=0.031). In terms of the fatty acid profile, the wheat germ oil had the highest level (P=0.023) of saturated fatty acids (SFAs). whereas the grape and hemp oils had the highest level (P=0.032) of polyunsaturated fatty acids (PUFAs), with predominance of linoleic acid, i.e. 71.3 and 64.2 g·100 g−1 ether extract, respectively (P=0.004). The camelina oil exhibited the highest amount of α-linolenic acid from the PUFA family (33.9 g·100 g−1 ether extract, P<0.001). The most favorable values of the atherogenic (P=0.009) and thrombogenic (P<0.001) indices were determined for the camelina, sunflower, and hemp oils. The analyzed seeds and oils used as feed material constitute an important source of linoleic and α-linolenic fatty acids, protein, and energy, partially or completely meeting the demand for these nutrients in the diets for monogastric animals. Continued research on the use of the analyzed seeds and oils in animal nutrition to increase production efficiency and support animal health may lead to their wider use in the husbandry sector.
Fish epidermal mucus-derived antimicrobial peptides: Classification, structure, biological activities, and potential biotechnological applications
Authors: Akhavan-Bahabadi Mohammad , Shekarabi Seyed Pezhman Hosseini , Yilmaz Ebru
Published: January 2025

In recent years the advent and spread of diverse multidrug-resistant bacteria has become a serious concern not only in the medical field but also in public health. The dissemination of drug-resistant pathogens has been considerably hastened by human activities in the clinical practice, livestock, and aquaculture sectors. Therefore, there is an urgent need to explore novel classes of antimicrobial agents against resistant bacterial pathogens. Antimicrobial peptides (AMPs), or host defense peptides, are synthesized by ribosomal or non-ribosomal mechanisms, which are vital components of the innate immune system in fish. Fish epidermal mucus can serve as a sources of unique peptides with a broad range of biological activities including antimicrobial activity towards multidrug-resistant pathogens, anticancer, wound healing, etc. AMPs derived from epidermal mucus are recognized as a novel class of antibiotics owing to their inimitable and multidimensional effects, including the low possibility for developing antimicrobial resistance, minimal cytotoxicity towards mammalian cells, high selective cytotoxicity against pathogens, low residual flesh, and the capacity to modulate the host immune responses. Additionally, the mucosal composition varies among fish species and is influenced by both endogenous and exogenous factors, which could be leveraged to identify new drugs in the future. This review investigates the AMPs produced by aquatic fish, their unique properties as potent therapeutic agents as well as classifications and biological activities.
The Study of Porosity in A356 Secondary Aluminium Alloys with Higher Iron Content
Authors: Šurdová Zuzana , Tillová Eva , Kuchariková Lenka , Mikolajčík Martin
Published: January 2025

The production of secondary (recycled) aluminium has gained significant importance in recent years, driven by the need to reduce electricity consumption and waste associated with primary aluminium production. Secondary aluminium alloys thus play a vital role in sustainable industrial practices, particularly within sectors such as automotive, aerospace and marine. Recently, these alloys have gained traction in electric vehicle components manufacturing, where lightweight and sustainable materials are critical to enhancing energy efficiency and extending vehicle range. However, secondary aluminium alloys are prone to impurities and casting defects, notably porosity, which presents challenges in achieving optimal mechanical properties and surface quality. Porosity reduces corrosion resistance, fatigue, and tensile strength, thus impacting overall material performance. This porosity can be categorised by size (microporosity and macroporosity) and origin, with gas and shrinkage porosity being the primary types. This study examined experimental A356 secondary aluminium alloys with varying iron contents in as-cast and T6 heat-treated conditions. The analysis focused on the quantitative assessment of casting defects within the microstructure, specifically, the types of pores present, the area percentage of pores, and average pore size. These insights contribute to a deeper understanding of how casting defects impact the performance of recycled aluminium alloys in sustainable applications, particularly in the context of next-generation electric vehicles.
Academic Discipline or Professional Training? Examining the Role of Subject Pedagogy in Japanese Teacher Education
Authors: Kawaguchi Hiromi , Kusahara Kazuhiro
Published: January 2025

This study examines the evolving role of subject pedagogy within Japan’s teacher education system, emphasising its dual function as both an academic discipline and a component of teacher preparation. Established after World War II, subject pedagogy has been central to training teachers in Japan, defined by its practical orientation and alignment with state‐mandated educational policies. However, it faces a dichotomy: criticized as overly practical by academics while perceived as excessively academic by policymakers. Through a case study of Hiroshima University’s School of Education, this paper explores how subject pedagogy navigates these tensions by balancing academic research and practical teacher training.

The analysis highlights three strategies employed to achieve this balance: aligning the university’s dual mission of training researchers and teachers with historical and institutional contexts, structuring programs to emphasize subject‐specific pedagogy as a distinct academic field, and fostering a globally oriented teacher identity. The findings suggest that while subject pedagogy is shaped by external reforms, it has also actively contributed to the evolution of Japan’s teacher preparation framework. This research provides insights into how subject pedagogy can simultaneously support academic autonomy and meet professional training demands, with implications for comparative education and teacher education systems globally.
General Didactics meets Subject Didactics: Lesson Study at the Intersection of Two Academic Fields
Authors: Miyamoto Yuichi , Yoshida Nariakira , Fukuda Atsushi , Ando Kazuhisa , Fujiwara Yuka , Ming Yue , Sawada Momoka , Oshiro Tomochika
Published: January 2025

General and subject didactics in Japan have played various important roles in policymaking, academic research, and teacher training. Nevertheless, opportunities for collaboration between them have been limited. Meanwhile, lesson study – a series of activities for lesson development and reflection including planning, observing, and evaluating lessons – opened an arena where these two fields meet and intersect to bring new insights into lesson development and reflection. This article aims to clarify how lesson study could bridge both fields. The historical development of Jugyou Kenkyuu in Japan is first reconstructed in order to extract theoretical frameworks valid in the lesson study discourse. We then present lesson study practice at School X where researchers from general and subject didactics collaboratively joined the lesson study, examined their own role arrangements, and found distinctive self-dispositioning. The case revealed several major modes of collaboration including complementary relationships, different communication styles, and integration. The article ends with a reflection on further perspectives for future work in lesson study.
Exploring the Feasibility of Green Hydrogen Production Using Wind Energy in India
Authors: Garlapati Nagababu , Patel Kunj , Patel Yagna
Published: January 2025

India heavily relies on coal for about 70 % of its energy demand, leading to a concerning 29 % increase in CO2 emissions from 2015 to 2022. The need for alternate fuels is evident with rising energy demand and the rapid depletion of fossil fuels. Green hydrogen emerges as a solution, leveraging renewable energy sources to mitigate environmental impact. This study assesses five high-speed wind locations in India for green hydrogen production, analysing wind resource potential using six different wind turbine (WT) models. A comprehensive techno-economic analysis was conducted to evaluate the feasibility of hydrogen production, considering factors like annual energy production (AEP), hydrogen production, levelized cost of energy (LCOE), and levelized cost of hydrogen (LCOH). Furthermore, the study quantified the carbon emissions mitigated using wind energy for hydrogen production instead of conventional methods. Additionally, the study assessed the hydrogen storage capacity. Results indicated Mandvi (S2) as the most potential location, boasting a capacity factor of 50.51 % and AEP by WT4 of 13.273 GWh, yielding 221.21 tons of hydrogen annually. Cost analysis reveals an LCOE of 0.0225 $/kWh and an LCOH of 2.3103 $/kg. Furthermore, utilizing WT4 at the S2 location could mitigate 12.37 Mt/year of carbon emissions.
Inbound Tourism in the Economic Development of the Inland Small Economies: the Case of Botswana, Moldova, and Nepal
Authors: Teperek Aneta , Santos Luís Lima
Published: January 2025

Objective: The objective of this study is to investigate the contribution of inbound tourism to the economic development of small inland economies, with a focus on the cases of Botswana, Moldova, and Nepal.
 
Theoretical Framework: The research is supported by indicators from the UNWTO and World Bank, which provide a solid basis for understanding the research: tourist arrivals, revenue generated by tourism, tourism's contribution to GDP, employment in the tourism sector and investment in tourism infrastructure.
 
Method: A mixed-methods approach, integrating quantitative and qualitative data, is employed, as well as a comparative case study methodology, to explore the ways in which these countries utilize tourism to drive economic growth, improve livelihoods and promote sustainability.
 
Results and Discussion: The results obtained demonstrate the considerable influence of tourism on GDP, employment, and foreign exchange earnings in these countries. Botswana's emphasis on nature tourism, Moldova's flourishing cultural and wine tourism, and Nepal's adventure and spiritual tourism provides insights into the diverse approaches to tourism development in these countries.
 
Research Implications: The results emphasize the necessity for the implementation of a tailored strategy for each of these economies, which successfully balances economic benefits with environmental protection and the promotion of social inclusion. By adopting best practices and addressing existing challenges, Botswana, Moldova, and Nepal can optimize the economic impact of tourism and achieve sustainable growth.
 
Originality/Value: The study contributes to the literature by taking an innovative approach to the development factors of small inland economies through inbound tourism, including the importance of strategic planning, policy coherence, infrastructure development and community involvement.
Ingenierías Comprometidas a contracorriente
Authors: Kleba John Bernhard , Ochoa-Duarte Alexei , León Leonardo
Published: January 2025

John Bernhard Kleba: estudió Sociología Política en la Universidad Federal de Santa Catarina, Brasil, y obtuvo un doctorado en Ciencias Sociales en la Universidad de Bielefeld, Alemania. Desde marzo de 2005 es Profesor Universitario Superior de Ciencias Políticas y Sociología en el Instituto Tecnológico de Aeronáutica (ITA), Brasil. En 2010/2011 fue galardonado por el CNPq con una investigación postdoctoral en el CSGR, Universidad de Warwick, Reino Unido y en 2014 fue galardonado por la FAPESP con una investigación postdoctoral en el Centro de Ética, Derecho y Asuntos Públicos de la misma universidad. Su enfoque de investigación se basa en Ingeniería y Servicios Comunitarios; Estudios Socio-Legales, Estudios de Ciencia y Tecnología, Filosofía Política, Sociología del Medio Ambiente y Derechos de Propiedad Intelectual.
Mayor información: https://bv.fapesp.br/en/pesquisador/4266/john-bernhard-kleba/
Prevalence and characteristics associated with barriers to eye care among general population in Makkah: a cross-sectional survey
Authors: Almalki Hussam , Almasoudi Manal , Alsiddig Ranya , Felimban Saja , Almatrafi Lama , Aljuaid Abdulaziz , Bajri Fatmah , Bamahfouz Ashjan
Published: January 2025

Objective:
This study aimed to document the prevalence and categories of obstacles to eye care experienced by participants and to evaluate how patient characteristics relate to self-reported obstacles to receiving eye care in Makkah.
Methods:
A cross-sectional study was conducted between March and May 2024 among 516 participants in Makkah City using a validated online survey. All residents of Makkah City, including both Saudi and non-Saudi individuals, aged above 18 years were included. Those who declined to contribute to the survey were excluded.
Results:
The study sample included 516 parents, out of which 55.4% were females and 44.6% were males. Almost a fifth of study population never had a visit to an eye clinic. Far and short eyesight problems were the most common causes of visits. The most common reported barrier was medical cost (N=188), followed by difficulty getting an appointment (N=163), and not having medical insurance (N=123). Multiple factors were associated with visiting an eye care clinic. Age was significantly associated with eye care clinic visits (p-value
FEATURES OF THE CLINICAL COURSE OF GENERALIZED PERIODONTITIS IN WOMEN OF REPRODUCTIVE AGE WITH POLYCYSTIC OVARY SYNDROME
Authors: Sharikadze-Balaban Anastasiia , Trubka Iryna , Zubchenko Oleksandr
Published: January 2025

Objective: To assess the clinical course of generalized periodontitis in women of reproductive age based on the presence of polycystic ovary syndrome (PCOS).
Materials and Methods: A total of 1,456 women of reproductive age underwent gynecological and dental examinations. For the purpose of this study, two groups were formed: 82 women with GP and PCOS (Group 1) and 58 women with GP without PCOS (Group 2). Oral hygiene status and several periodontal indices were assessed in both groups.
Results: The study showed that GP was more prevalent in women with PCOS than in healthy women. Women with PCOS demonstrated a significantly more severe course of GP, which was evidenced by higher values in the simplified oral hygiene index Green-Vermillion (OHI-S) (2.20 (1.83; 2.78) points vs 2.0 (1.70; 2.50) points, p = 0.047), the periodontal index (PI) by Russel A.L., 1956 (2.20 (1.7; 3.0) points vs 2.10 (1.40; 2.58) points, p = 0.029), the Community Periodontal Index of Treatment Needs (CPITN) (2.80 (2.20; 2.28) points vs 2.40 (2.00; 2.78) points, p < 0.0001), and the Sulcus Bleeding Index (SBI) by Muhlemann A.S. and Mazor A.S. (1958) (1.6 (1.4;1.8) points vs 1.3 (1.2;1.5) points, p = 0.0001). In addition, saliva viscosity was increased (p = 0.002), and the amount of saliva secreted was lower (p = 0.004).
Conclusions: In women of reproductive age with PCOS, the clinical course of GP was characterized by significantly more severe manifestations, which were confirmed by higher values in several periodontal indices and poorer saliva quality.
SARS-COV-2 ІНФЕКЦІЯ У ДІТЕЙ ЛЬВІВЩИНИ
Authors: Lytvyn Halyna , Dubey Leonid , Stasiv Maria , Dybas Iryna , Ivanchenko Natalia , Dubey Natalia , Kalchuk Olena , Chkhaidze Ivane , Valioulis Arunas
Published: January 2025

Вступ. У різні епідемічні періоди COVID-19 від 3.5 % до 28 % пацієнтів дитячого віку потребували ушпиталення [1–3] , а смертність становила близько 0.1 % [4–5]. Клінічний спектр дитячого COVID-19 широкий – від безсимптомного до критично важкого захворювання, ускладненого гострим респіраторним дистрес-синдромом, з необхідністю ШВЛ [6].
Мета. Провести аналіз клініко-лабораторних особливостей COVID-19 у дітей різного віку.
Пацієнти та методи. Проведено проспективне дослідження за участі 110 пацієнтів віком від одного до 18 років, які перебували на лікуванні з діагнозом COVID-19 у лікарні «Охматдит» м. Львова у 2021-2022 роках. Діагноз верифіковано позитивним ПЛР тестом на SARS-CoV-2 з назоцитограми. Сформовано три вікові групи: до першої увійшли 28 дітей віком від 1 до 5 років, до другої – 33 пацієнти від 5 до 10 років, до третьої – 49 пацієнтів від 10 до 18 років. В ушпиталених пацієнтів визначали клінічні, лабораторні та інструментальні ознаки хвороби.
Результати. Середньо-тяжкий перебіг COVID-19 діагностували у 80 пацієнтів (72.73 %), тяжкий – у 30 (27.27 %), (p ˂ 0.05). Показники середніх / серединних значень запальних маркерів у пацієнтів із середньо-тяжким та тяжким перебігом SARS-CoV-2: прокальцитоніну 0.05±0,03 нг/мл та 2.48±5.27 нг/мл; СРП 12.14±20.90 мг/л та 62.93±79.33 мг/л; IL-6 1.20 пг/мл та 7.50 пг/мл; IL-10 1.87±6,37 пг/мл та 22.64±60.97 пг/мл відповідно (p ˂ 0.05). Підвищені рівні Д-димеру корелювали з тяжкістю COVID-19, наростали у динаміці. Серединні значення показника Д-димеру на час ушпиталення і в динаміці у дітей з тяжким перебігом становили: 791.00 нг ФЕО/мл, 1206.00 нг ФЕО/мл; середньо-тяжким – 368.00 нг ФЕО/мл, 425.00 нг ФЕО/мл, (р ˂ 0.05). Серед усіх пацієнтів з COVID-19 пневмонію діагностували у 46 осіб (41.82 %), а у 19 осіб (63.33 %) – з тяжким перебігом хвороби.
Обговорення. Наукові дослідження свідчать, що тяжкий перебіг SARS-CoV-2 частіше спостерігають у підлітків, тяжкість перебігу захворювання у різних вікових групах залежить також від його штаму [3, 7–8]. Реалізація передбачення тяжкого інфекційного процесу у дітей можлива при вивченні рівнів цитокінів, прокальцитоніну, СРП, фібриногену та тропоніну [9]. Підвищення Д-димеру, виявлено при тяжкому COVID-19 [10–11].
Висновки. У більшості шпиталізованих дітей розвинувся середньо-тяжкий перебіг COVID-19. Тяжкий перебіг – у дітей віком 10 – 18 років. Значення запальних маркерів були вищими у дітей з тяжким COVID-19. Пневмонія розвинулася у 41.82 % пацієнтів. Підвищені рівні Д-димеру корелювали з тяжкістю COVID-19
THE 4A/B POLYMORPHISM OF THE NOS3 GENE AS A PREDICTOR OF SUSCEPTIBILITY AND PROGRESSION OF MULTIPLE SCLEROSIS
Authors: Lafarenko Maya , Nehrych Nazar , Fishchuk Liliya , Popova Olena , Rossokha Zoya , Nehrych Tetyana
Published: January 2025

Aim. Nitric oxide (NO) and the variants of the endothelial nitric oxide synthase gene (NOS3) in multiple sclerosis (MS) have become a focus of active scientific interest in recent years. The NOS3 gene is constitutively expressed in neuronal and epithelial cells. Moreover, the endothelial NO synthase enzyme (eNOS) activity, which plays a pivotal role in developing endothelial dysfunction, is regulated by variants of the NOS3 gene, including the 4a/b variant.
Objective. To evaluate the influence of the 4a/b variant of the NOS3 gene on the susceptibility to and progression of multiple sclerosis.
Materials and Methods. The study included 113 patients diagnosed with MS. Genotyping for the 4a/b variant of the NOS3 gene was performed using the polymerase chain reaction method.
Results. Our findings indicate that the presence of the 4bb genotype is associated with a reduced risk of developing MS, whereas the 4a allele of the NOS3 gene is linked to an increased risk. Clinical characteristic analysis revealed that patients with the 4ba and 4bb genotypes exhibited a significantly higher body mass index (BMI) (p=0.007) than those with the 4aa genotype. Additionally, patients with the 4bb genotype were substantially more likely to experience a severe disease course (p=0.0489). Binary logistic regression analysis identified a gene-environment interaction between the NOS3 4a/b variant and BMI (p=0.037), suggesting a combined effect of these factors on MS progression.
Conclusions. The results underscore the significant and complex role of the NOS3 4a/b variant in the pathogenesis and progression of MS. Further investigation is warranted to deepen our understanding of the mechanisms underlying this genetic factor and its interplay with other contributing variables.
MENTAL HEALTH SUPPORT NEEDS OF STUDENTS DURING THE WARTIME
Authors: Polyvianaia Marina , Stepanova Nataliia , Yachnik Yulia , Myshakivska Olha , Fegert Jörg M. , Sitarski Emily , Pinchuk Irina
Published: January 2025

Introduction: The full-scale war initiated by russia on February 24, 2022, has significantly impacted the mental health of Ukrainian students, causing them considerable stress.
Objective: To assess the need for mental health support and protection among Ukrainian students during wartime.
Methods: Two online surveys were conducted in 2022 and 2023 to evaluate students’ mental health. The questionnaire covered sociodemographic data, psychological well-being, and mental health support before and during the war. Psychodiagnostic scales used included PC-PTSD-5, PHQ-9, GAD-7, ISI, SCOFF, CAGE, CRAFFT, and PSS. Multivariate logistic regression analysis determined factors influencing the likelihood of seeking professional mental health support. Six focus groups with students and faculty were held in March – April 2024 to identify needs and barriers to psychological and psychiatric assistance, analyzed using thematic analysis (Braun and Clarke, 2006).
Results: A significant number of students (69.2%) showed signs of deteriorating mental health due to psychological trauma. Traumatic experiences were reported by 67.4% of respondents in 2022 and 91.1% in 2023. The primary source of support was family and friends (39.3% in 2022 and 40.3% in 2023). Many students did not seek support (56.6% in 2022, 54.5% in 2023). At the survey time, 14.7% (2022) and 15.8% (2023) indicated a need for professional help.
Conclusions: Barriers and stereotypes that prevent students from seeking help have been identified. Proposals to overcome stigma include psychoeducation, psychological support services, psychological support during education, and stress resilience programs.
THE IMPACT OF CURRENT CHALLENGES (СOVID-19, WAR, HEALTHCARE REFORMS) ON THE PSYCHO-EMOTIONAL STATE OF STUDENTS AND THE QUALITY OF POSTGRADUATE EDUCATION
Authors: Sichkoriz Orest , Zimenkovsky Andriy , Gutor Taras
Published: January 2025

Introduction. The COVID-19 pandemic and the war in Ukraine pose new challenges for the state, society, and all areas of operation, including higher education and healthcare systems.
Aim. The aim of this research was to study the impact of the COVID-19 pandemic and martial law on the socio-psychological aspects of the activities of physicians(pharmacists)-specialists and the opinion of physicians(pharmacists)-specialists on the quality of postgraduate education, namely, ATC (advanced training courses) at Danylo Halytsky Lviv National Medical University.
Methods. The study uses the sociological method, methods of the systemic approach, structural-logical and medical-statistical analysis.
Results. The study was conducted in 2024. The healthcare reform in Ukraine contributed to the increase in the satisfaction of medical workers with the nature of work, working conditions, workplace, and especially the remuneration system – from 32.20±1.63% to 69.56±2.12%.
According to respondents, the impact of the COVID-19 pandemic caused a deterioration in the nature of work, the remuneration system, the work regime and its conditions, and at the same time, improved information in the industry, the workplace, financing and increased levels of provision of medical institutions.
According to the study results, the war’s impact caused a deterioration in the nature of work, conditions, regime, labor organization and remuneration system.
The improvement in the quality of postgraduate education is evidenced by the increase in the level of student satisfaction with the level of theoretical knowledge obtained and practical skills acquired.
Conclusions. Difficult working conditions caused by emergencies are not obstacles but new challenges in improving the quality of higher medical education in general and postgraduate education in particular.