bluuebunny/crossref_metadata_2025 huggingface dataset:
Archaeomineralogical study of burned clay plasters from the region of Sarnena Sredna Gora Mountains
Authors: Mihaylova Katerina , Kostova Bilyana , Dumanov Boyan , Berberova Ralitza
Published: December 2024

This work studies burned clay plasters from archaeological sites in the cultural-historical region of Sarnena Sredna Gora Mountains and their southern foothills. It was established that the plasters have a similar phase composition, consisting of montmorillonite, muscovite, illite, quartz, albite, calcite and microcline, which indicates that the employed construction system drew resources from a common source or several. Different firing temperature ranges were determined – up to 500 °C; between 500–700 °C; and above 700 °C – up to calcite decomposition temperature (<800 °C). The assumed high temperatures confirm the burning of the archaeological structures, and the varying temperature ranges can be explained by the uncontrollable conditions during the fire.
Rescue archaeological excavations of a “burial” mound in the land of the town of Belovo, District of Pazardzhik – geomorphological characteristics
Authors: Nankov Emil , Kenderova Rossitza , Marinova Kameliya
Published: December 2024

The archaeological site is a “burial” mound (Site № 9), located ca. 4 km east of the center of the town of Belovo, next to the Sofia–Plovdiv Railway Line. The purpose of the research is to establish the stages of construction of the mound by means of archaeological and geomorphological studies as well as sedimentological analyses.
Web GIS systems for data collection and promotion of Bulgarian fossil deposits with high scientific and museum significance
Authors: Sachkov Dimitar , Valchev Boris
Published: December 2024

This work presents the potential of GIS technologies for collecting, processing, visualizing and promoting geospatial data on the example of the development of a Web-based system for public access to information on the geoconservation significance of Bulgarian fossil deposits of high scientific and museum value in order to raise public awareness of the role of Bulgarian geological heritage for sustainable regional development.
ВЫПЛАВКА УГЛЕРОДИСТОГО СПЛАВА ИЗ ЖЕЛЕЗНОЙ РУДЫ РУДОПРОЯВЛЕНИЯ «МЭНЭ-АЛДАН» РЕСПУБЛИКИ САХА (ЯКУТИЯ)
Authors: Петров П.П. , Степанова К.В. , Данилов А.Д.
Published: December 2024

В статье приведены результаты исследований физико-механических свойств материала, полученного при металлургической плавке по технологической схеме создания сплавов на базе минерального сырья Якутии. Выявлено, что сплав по физико-механическим свойствам наиболее близок к категории углеродистых инструментальных низколегированных сталей согласно ГОСТ 1435–99. Мелкозернистая однородная структура полученного сплава свидетельствует об улучшенном прочностном комплексе физических и механических свойств данного материала. Значения предела прочности и твердости материала соответствуют показателям, характерным для качественных углеродистых сталей после нормализации. Доказана целесообразность использования железных руд осадочного происхождения из рудопроявления «Мэнэ-Алдан» при разработке инструментальных сталей и сплавов.

The article presents the results of studies of the physical and mechanical properties of the material obtained during metallurgical smelting according to the technological scheme for creating alloys based on mineral raw materials of Yakutia. It was revealed that the alloy, in terms of physical and mechanical properties, belongs to the casting alloys of the category of tool steels according to GOST 1435–99. The fine-grained homogeneous structure of the alloy indicates an improved strength complex of physical and mechanical properties of this material. The values of the ultimate strength and hardness of the material correspond to the indicator characteristic of high-quality carbon steels after normalization. The feasibility of using iron ores of sedimentary origin from the Mene-Aldan ore occurrence in the development of tool cast steels and alloys has been proven.
ЗАВИСИМОСТЬ КОРРОЗИОННОЙ СТОЙКОСТИ КОНСТРУКЦИОННЫХ СТАЛЕЙ ТРУБНОГО НАЗНАЧЕНИЯ ОТ СОДЕРЖАНИЯ ХРОМА И МЕДИ В НЕФТЕПРОМЫСЛОВЫХ СРЕДАХ ХЛОРИДНО-КАЛЬЦИЕВОГО ТИПА С РАЗНЫМ СОДЕРЖАНИЕМ АГРЕССИВНЫХ ИОНОВ
Authors: Амежнов А.В. , Науменко В.В. , Васечкина И.А.
Published: December 2024

Представлены результаты исследования образцов от рулонного проката из конструкционных сталей трубного назначения промышленной выплавки ПАО «НЛМК» и образцов лабораторной плавки различных систем легирования (C–Mn–Si, C–Mn–Si–Cr, C–Mn–Si–Cr–Cu, C–Mn–Si–Cr–Ni–Cu) после коррозионных испытаний в движущейся среде хлоридно-кальциевого типа с различным содержанием агрессивных ионов, характерной для Ханты-Мансийского АО. Показано, что наименьшей скоростью коррозии характеризуются образцы лабораторного проката с содержанием хрома в количестве 0,6% и отсутствием в металле КАНВ. Установлено, что продукты коррозии состоят из трех слоев, отличающихся по внешнему виду, структуре и химическому составу. Определено, что только один из слоев, названный по внешнему цвету «серым», характеризующийся повышенным содержанием Cr и Cu, обладает наибольшими защитными свойствами в данных коррозионных условиях. Установлено взаимное положительное влияние добавок хрома и меди на коррозионную стойкость конструкционных сталей в условиях воздействия агрессивных сред, характерных для Ханты-Мансийского АО.

The results of the study of samples from rolled products made of structural steels for pipe purposes of industrial smelting at NLMK PJSC and samples of laboratory smelting of various alloying systems C-Mn-Si, C-Mn-Si-Cr, C-Mn-Si-Cr-Cu, C are presented. -Mn-Si-Cr-Ni-Cu after corrosion tests in a moving environment of chloride-calcium type with different content of aggressive ions, typical for the Khanty-Mansiysk region. It is shown that the lowest corrosion rate is characterized by laboratory rolled products with a chromium content of 0.6 % and the absence of CANI in the metal. It was found that the corrosion products consist of 3 layers that differ in appearance, structure and chemical composition. It was determined that only one of the layers, called “gray” by its external color, is characterized by an increased content of Cr and Cu, has the greatest protective properties in these corrosive conditions. A mutual positive effect of chromium and copper additives on the corrosion resistance of structural steels under conditions of exposure to aggressive environments typical for the Khanty-Mansiysk region has been established.
ВЛИЯНИЕ МАЛОЙ ДОБАВКИ АЛЮМИНИЯ НА СТРУКТУРУ И ФАЗОВЫЙ СОСТАВ СПЛАВА (Fe0,25Co0,25Ni0,25Cr0,125V0,125)83B17
Authors: Базлов А.И. , Убыйвовк Е.В. , Строчко И.В. , Занаева Э.Н. , Свиридова Т.А.
Published: December 2024

Работа посвящена исследованию влияния малой добавки алюминия на структуру слитков высокоэнтропийного сплава (Fe0,25Ni0,25Co0,25Cr0,125V0,125)83B17. Структура сплавов была проанализирована с использованием методов сканирующей электронной микроскопии и микрорентгеноспектрального анализа. Анализ формирующихся боридов был произведен с использованием методов просвечивающей электронной микроскопии, рентгеновской дифракции и дифракции обратно рассеянных электронов. Установлено, что добавка алюминия изменяет процесс кристаллизации сплавов, оказывая влияние на тип первичных кристаллов боридов и состав эвтектики. Увеличение добавки алюминия в сплав приводит к смене типа боридов с тугоплавкого борида типа (V, Cr)B на более легкоплавкий борида типа Mе3B2

The work is devoted to the investigation of the influence of a small aluminum addition on the structure of ingots of high-entropy alloy (Fe0.25Ni0.25Co0.25Cr0.125V0.125)83B17. The structure of the alloys was analyzed using scanning electron microscopy and EDX analysis techniques. The borides formed with the structure were analyzed using transmission electron microscopy, X-ray diffraction and backscattered electron diffraction techniques. Aluminum addition was found to change the crystallization process of the alloys, influencing the type of primary boride crystals and eutectic composition. The increase of aluminum addition to the alloy leads to the change of boride type from refractory boride of (V,Cr)B type to more easily melting type of boride M3B2.
ИССЛЕДОВАНИЕ ТЕХНОЛОГИИ РЕЦИКЛИНГА ДЛИННЫХ ОПРАВОК НЕПРЕРЫВНОГО СТАНА
Authors: Билан И.Т. , Белоножко С.С. , Алещенко А.С. , Романцев Б.А. , Афанасьев В.В.
Published: December 2024

В статье рассматривается возможность обработки давлением заготовок с помощью винтовой прокатки с целью дальнейшего производства рабочих частей оправок непрерывного стана. Проведены опытные прокатки слитков, полученных методом электрошлакового переплава. В работе произведена качественная оценка микро- и макроструктуры, подтверждающая возможность применения прокатки заготовок для дальнейшего производства рабочих частей оправок непрерывного стана.

The authors discusses the possibility of pressure processing of workpieces using screw rolling for the purpose of further production of working parts of continuous mill mandrels. Experimental rolling of ingots obtained by electroslag remelting was carried out. In the work a qualitative assessment of the microstructure and macrostructure was made confirming the possibility of using billet rolling for the further production of working parts of continuous mill mandrels.
An Azerbaijani Adaptation of Tuckman Procrastination Scale: Its Association with Academic Motivation and Self-Efficacy
Authors: Aliyev Bakhtiyar , Asadov Fuad , Mammadova Rahila , Asgerova Nigar , Isayeva Leyla , Zalova Nuriyeva Ulkar , Rustamov Elnur
Published: December 2024

The aim of this study was to adapt the Tuckman Procrastination Scale for use with Azerbaijani adolescents and explore the relationships between procrastination, academic motivation and self-efficacy.  Data were obtained from 718 adolescents in Azerbaijan whose ages ranged from 10 to 18 years (M = 13.61, SD = 1.86) through convenience sampling. As part of the adaptation process, confirmatory factor analysis, criterion-related validity, and reliability analyses were conducted. Furthermore, the study shedding light on the relationships between procrastination and academic motivation and self-efficacy were explored using PROCESS macro mediation analysis. The results obtained from confirmatory factor analysis indicated that factor loading values of three items of the scale is less than 30 and cannot be taken into account. The remaining 13 items of Tuckman Procrastination Scale analyzed and confirmed the unidimensional structure of scale.  Internal consistency reliability analysis conducted and the result indicated satisfactory reliability coefficients. Moreover, results demonstrated that procrastination was negatively associated with academic motivation and self-efficacy. Addiction to it, the mediating effect of self-efficacy on the relationship between procrastination and academic self-efficacy was unveiled. These findings suggest that the Azerbaijani version of the Tuckman Procrastination Scale has acceptable  psychometric properties.
RANCANG BANGUN APLIKASI SURVEI KEPUASAN PELANGGAN BERBASIS WEB UNTUK MENINGKATKAN KUALITAS LAYANAN: STUDI KASUS DI PT XYZ
Authors: Rinald Rinald Pintara Paningku , Kusumawati Arie , Kartika Kusuma Winahyu Raden Rara
Published: December 2024

PT XYZ adalah perusahaan real estate yang berfokus pada pengembangan properti perumahan, komersial, dan industri di Indonesia. Kepuasan pelanggan merupakan faktor kunci dalam menjaga loyalitas dan meningkatkan reputasi perusahaan di industri ini. Sebelum adanya aplikasi survei kepuasan pelanggan, perusahaan mengandalkan vendor eksternal untuk mengelola survei, yang membatasi fleksibilitas dalam penyesuaian pertanyaan, cakupan survei, dan kecepatan analisis data.Untuk mengatasi tantangan ini, PT XYZ mengembangkan aplikasi survei kepuasan pelanggan in-house. Tujuan utama dari aplikasi ini adalah untuk meningkatkan fleksibilitas dalam menyusun dan menyesuaikan pertanyaan survei, memperluas cakupan survei ke semua unit yang dihuni atau disewakan, serta menyediakan fitur analisis data umpan balik yang efisien. Hasil dari pengembangan aplikasi ini menunjukkan peningkatan signifikan dalam proses survei. Aplikasi memungkinkan penyesuaian pertanyaan survei secara real-time, memperluas cakupan survei untuk mencakup seluruh unit properti, dan mengurangi waktu proses pembuatan survei dari 1.440 menit menjadi 60 menit. Dengan aplikasi ini, PT XYZ dapat memperoleh data yang lebih representatif tentang kepuasan pelanggan, mempercepat analisis hasil, dan meningkatkan respons terhadap umpan balik pelanggan, yang pada akhirnya berkontribusi pada peningkatan kualitas layanan dan kepuasan pelanggan secara keseluruhan.
PERANCANGAN STRUKTUR PANEL SURYA DENGAN SISTEM PERGERAKAN SEMI OTOMATIS UNTUK PRODUK TOWER LAMP LS4-2000
Authors: Sudarmaji Heri , Sidik Pramana
Published: December 2024

Kualitas udara yang buruk menjadi salah satu faktor yang dapat membahayakan kesehatan manusia. Buruknya kualitas udara disebabkan tingginya persentase  di udara hasil dari pemakaian bahan bakar minyak. Melalui peraturan pemerintah yaitu PP 79 tahun 2014 mengenai kebijakan pemakaian energi meminta semua perusahaan melakukan percepatan dalam menurunkan kadar  menggunakan prinsip renewable energy. PT United Tractors Pandu Engineering merupakan perusahaan yang cepat merespon prinsip tersebut dengan cara pengaplikasiannya pada produk mereka salah satunya yaitu Tower Lamp. Tower lamp LS4-2000 saat ini masih menggunakan sistem hybrid. Sistem ini menggunakan 6,52 liter solar dan menghasilkan  sebesar 16,38 kg tiap harinya. Oleh karena itu, penelitian ini bertujuan mengembangkan produk tower lamp hybrid menjadi full battery. Metode penelitian menggunakan dieter yang didalamnya terdapat tools seperti TRIZ, Morphological Charts, Decision Matrix, dan Finite Element Analysis. Hasil penelitian berupa detail drawing dari struktur penahan panel surya. Selain itu, penelitian ini juga menghasilkan spesifikasi komponen standar seperti drawer slider, bearing, baut, dan power pack. Desain dibuat menggunakan software Solidworks dan telah teruji kekuatannya dalam menahan beban panel surya dengan bantuan fitur simulation pada software Autodesk Inventor. Dengan demikian, produk yang dibuat mampu mendukung program pemerintah karena tidak adanya gas emisi yang dihasilkan (penurunan 100% dari 16,38 kg  per hari untuk 1 produk).
OPTIMASI PENGGUNAAN LAMPU PADA AREA PAINTING DI PT X DITINJAU DARI ENERGI DAN EMISI DENGAN MENGGUNAKAN BIM
Authors: Sukantara Mohamad Heri , Herdimas Herdimas , Sheila Wulandari Putri
Published: December 2024

Potensi kenaikan kebutuhan listrik di Indonesia pada tahun 2023 menjadi hal yang mengkahawatirkan dan memungkinkan terjadinya krisis energi. Upaya yang dilakukan meliputi penemuan sumber energi terbarukan, pengembangan peralatan dengan konsumsi energi rendah, dan peningkatan efisiensi energi. Aktivitas sederhanda yang dapat dilakukan seperti menggunakan sistem pencahayaan buatan dengan tepat dan bijak. Touch-up line merupakan salah satu area produksi yang berfungsi sebagai area untuk perbaikan hasil warna mobil. Pada Touch-Up line terdapat 1048 lampu dengan lux yang dihasilkan melebihi standar, Efisiensi sistem pencahayaan dilakukan guna mencapai kebutuhan jumlah lampu yang optimal, dengan mempertimbangkan efisiensi energi dan kualitas pencahayaan yang diperlukan dalam lingkungan kerja. Metode penelitian yang digunakan ialah metode kuantitatif. Penelitian ini membandingkan intensitas energi, emisi karbon, dan biaya terhadap jumlah lampu. Berdasarkan hasil analisis yang dilakukan, lampu pada Touch-Up Line sebelumnya terdapat 1048 lampu dapat diefisiensikan 51,9 % menjadi 504 lampu. Besar IKE pada kondisi setelah perhitungan lebih efisien 51,61 % jika dibandingkan dengan kondisi eksisting yaitu 150 kwh/m2/tahun, sehingga emisi karbon yang dihasilkan pun lebih sedikit dibandingkan kondisi eksisting yaitu sebesar 35,235 ton CO2.
INVESTIGATION OF ESOPHAGEAL CANCER SUBTYPES, EPIDEMIOLOGICAL TRENDS, AND ASSOCIATED RISK FACTORS: A LITERATURE REVIEW
Authors: TULYAEVA A. , AITMAGAMBETOVA M. , BEGUNOV V. , ABDINAGIEV N. , ZHANBYROVA M. , NAZARBEKOVA G. , KUATOVA B. , IZTURGANOVA A.
Published: December 2024

Relevance: Esophageal cancers represent a significant public health and health problem in many parts of the world. Esophageal cancer development is a multifactorial process associated with various risk factors. Many studies have been identified that have examined various etiologic factors, including genetics, diet, infections, oral health, and underlying diseases.This brief review aims to provide a comprehensive survey of cancer epidemiology and a thorough assessment of established and suspected risk factors associated with esophageal cancer by distinct histologic subtypes.The purpose was to study the relationship between risk factors and genetic susceptibility in the development of esophageal cancer, with particular emphasis on two distinct histopathological subtypes.Methods: The literature review included a search for scientific publications in the following databases: PubMed, Medline, and Cochrane Lab, using the scientific search engine Google Scholar. The search depth was 10 years.The literature review included epidemiology studies and assessing the strength of the relationship between risk factors for esophageal cancer. The review included all studies only among adults, publications in English, as well as publications with clearly formulated conclusions;The exclusion criteria were case series, case reports, editorials, and conference abstracts. Out of 462 sources found, 45 were included in the analysis.Results: Studies show that several factors increase susceptibility to esophageal cancer, including tobacco use, excessive alcohol consumption, opioid abuse, hot food and beverage consumption, gastroesophageal reflux disease, obesity, gastric atrophy, poor oral hygiene, changes in esophageal microbiota, suboptimal diets, viral and bacterial infections, and others. In addition, mutational profiles of esophageal cancer cells have revealed frequent mutations in specific genes, including TP53, NFE2L2, MLL2, ZNF750, and NOTCH.Conclusion: The pathogenesis of squamous cell carcinoma cancer exhibits multifactorial properties, with multiple recognized risk factors contributing to its occurrence. In contrast, the etiology of adenocarcinoma esophageal cancer remains relatively unknown, requiring ongoing research efforts to elucidate its fundamental causal mechanisms.
ENDOSCOPIC BOUGIENAGE OF BENIGN ESOPHAGEAL STRICTURES USING A BOUGIE CAP
Authors: BATYRBEKOV K. , GALIAKBAROVA A. , UALIKHANOV A.
Published: December 2024

Relevance: Esophageal stricture is a narrowing of the lumen of the esophageal tube caused by the proliferation of connective tissue in its wall. This condition can develop against the background of esophagitis, peptic ulcers, chemical burns of the esophagus, and iatrogenic causes. Cicatricial changes of the esophagus occupy the second place among diseases of this organ after esophagitis and are formed in 70-80% of patients with postburn strictures.The study aimed to analyze the results of endoscopic treatment of benign esophageal stenosis using distal Bougie Cap caps and evaluate the effectiveness of this new device in the short term of use for treatment purposes.Methods: The authors have retrospectively analyzed the first results of using Bougie Cap distal caps in the endoscopic treatment of benign esophageal stenosis in Kazakhstan. From 2022 to 2023, 81 bougie sessions with steel caps were performed in 55 patients with esophageal stenosis in the endoscopic department of the National Research Oncology Center (Astana, Kazakhstan).Results: The leading causes of esophageal stenosis were chemical burns (60% of patients), stenosis after radiation therapy (25.4%), and strictures of esophageal anastomosis (14.6%). The stenoses were short, up to 3.0 cm, in 37 patients (67.2%), extended – in 15 patients (27.2%), subtotal – in 2 patients (3.6%), and only one patient (1.8%) had a stenosis of 17 cm. The bougienage outcome was good in all patients with short stenoses, satisfactory – in patients with stenoses up to 9 cm, and unsatisfactory – in patients with subtotal and total stenoses. The number of sessions was 3 to 11. Three patients with total and subtotal stenosis were denied a bougienage due to a tortuous stenosis with a high risk of perforation, and a percutaneous gastrostomy was installed.Conclusion: Endoscopic bougienage with distal caps of the Bougie Cap is a safe method of bougienage of benign esophageal strictures since the cap is transparent, and an endoscopist visually supervises the bougienage. During the three years of using distal caps to dilate esophageal stenosis, not a single case of perforation was registered in our department. Therefore, we recommend this method as the safest and most predictable method of bougienage, both in outpatient practice and in the hospitals in the Republic.
Who Benefits from Multispecies Justice?
Authors: Otjen Nathaniel
Published: December 2024

Review of:
Sophie Chao, Karin Bolender, and Eben Kirksey, eds. The Promise of Multispecies Justice. Durham, NC: Duke University Press, 2022. xii + 284 pp. 23 illus. $99.95 (hb) 978-1-4780-1625-0, $26.95 (pb) 978-1-4780-1889-6
Into the Cat Show Ring
Authors: Beste Maura
Published: December 2024

Review of:
Emily Stone, Cat People: Human–Cat Interrelatedness in the Cat Fancy. Multispecies Encounters. London: Routledge, 2023. vi + 200 pp. £39.99 (pb), £125.00 (hb).
Digital Learning, Mediating Effect of Instructor Facility on Student Satisfaction at Universities
Authors: Sah Gunja Kumari
Published: December 2024

Digital learning is essential to explore digital platforms at university. The study considered a quantitative approach to examine the impact of digital learning on student satisfaction at various universities during COVID-19 in Nepal. The paper also focused on analyzing the mediating effect of instructor facility on student satisfaction. Several pieces of information were attained from the 225 students of Tribhuvan University, Kathmandu University, Purbanchal University, Pokhara University, and Rajarshi Janak University through stratified random sampling techniques. Data was converted into valuable information by analyzing raw data through SPSS software and used for frequency analysis and exploratory factor analysis. Next-level analysis was performed by AMOS software for structural equation modeling to examine student satisfaction with digital learning and the mediating effect of instructor facility. The result of the paper found all dimensions significantly influenced on mediating construct of instructor facility and student satisfaction. It also identified convenience as the most influential factor than technology in instructor facilities. However, the result demonstrates that technology was the most influential factor, rather than convenience, on dependent construct student satisfaction. It revealed that instructor facility significantly affects student satisfaction. So, digital learning becomes effective, and efficient, when convenient digital portals, technology facilities, instructors' knowledge, educational institution systems, and students are thoroughly engaged with it.
Increasing the Wear Resistance of High-Speed Steel P6M5 Using Plasma-Electrolytic Nitrocarburizing
Authors: Mukhacheva T. L. , Tambovskii I. V. , Kusmanova I. A. , Golubeva T. M. , Anisimova M. A. , Markina L. M. , Kusmanov S. A.
Published: December 2024

A technology is proposed to increase the hardness and wear resistance of the surface of R6M5 high-speed tool steel using low-temperature plasma electrolytic nitrocarburizing in combination with air quenching and three-stage tempering. The structure and phase composition of the surface layers of high-speed steel before and after treatment were studied using X-ray analysis and scanning electron microscopy. Tribological tests were carried out under dry friction conditions with a varying sliding speed. It is shown that the formation of a high-alloy martensite structure with nitride inclusions after nitrocarburizing with quenching and the precipitation of finely dispersed carbides during subsequent tempering leads to hardening of the surface layer to 1140 HV after quenching and to 1380 HV after subsequent tempering. The greatest reduction in weight wear (by 11.6 times) compared to that of the untreated sample occurs after plasma electrolytic nitrocarburizing with subsequent hardening and tempering under the condition of oxidative wear, which is observed at a load of 10 N and a sliding speed of 1.44 m/s. At both lower and higher sliding speeds in the studied friction pairs, wear is defined as fatigue wear with dry friction and plastic contact.
Review of International Experience in Substantiating the Technology of Smelting Copper Sulfide-Containing Concentrates Taking into Account the Criterion "Efficiency-Economic Efficiency-Environmental Friendliness"
Authors: Spiryagin Val. V. , Kravchenko I. N. , Kuznetsov Yu. A. , Spiryagin Vit. V.
Published: December 2024

The review, based on the publications by both Russian and international researchers, presents an analysis of the problems of existing technologies for smelting copper concentrates. Three main problems requiring solutions were identified and considered: increasing the efficiency of smelting copper sulfide-containing ores by reducing the copper content in slags obtained during the conversion process; increasing efficiency, including by obtaining an additional economic effect from waste disposal; reducing the harmful impact on the environment. It was stablished that trends towards the development of new efficient, environmentally friendly and cost-effective technologies are characteristic not only of the selected research object, but also of a number of other non-ferrous metals, such as lead and zinc.
Investigation of the Energy and Power Characteristics of a High-Voltage Electrochemical Explosion in a Condensed Medium
Authors: Vovchenko А. I. , Demidenko L. Yu. , Kozyrev S. S. , Ovchinnikova L. E.
Published: December 2024

Based on an analysis of the results of the experimental studies of the energy characteristics of a high-voltage electrochemical explosion in a condensed medium, the optimal value of the specific electrical energy introduced into the discharge channel was established, which ensures the maximum release of chemical (thermal) energy of exothermic reactions in the discharge channel. This makes it possible to significantly reduce electrical energy consumption by releasing the maximum amount of additional chemical energy, and consequently, reduce the weight and dimensions of electrical equipment and minimize the consumption of exothermic compositions when implementing technological operations using a high-voltage electrochemical explosion in a condensed medium. As a result of studying the power characteristics, it was established that the amplitude of the pressure wave generated by a high-voltage electrochemical explosion in a condensed medium is determined by the electrical energy introduced into the discharge channel and does not depend on the mass of the exothermic composition. The condition for generating the maximum pressure pulse coincides with the condition for the release of maximum chemical energy and is determined by the optimal value of the specific electrical energy. The established patterns can be used in the synthesis of combined energy sources for discharge-pulse technologies.
Development Communication in the Artificial Intelligence (AI) Era: Navigating Cultural Complexity and Technological advancements
Authors: N. B. Ezeaka, , V. A. Umennebuaku,
Published: December 2024

In the rapidly evolving landscape of the 21st century, the intersection of artificial intelligence (AI) and development communication presents both opportunities and challenges that demand nuanced exploration. This paper examines how technological advancements in AI are reshaping communication strategies within diverse cultural contexts. By employing qualitative analysis, the study unravels the implications of AI-driven tools for information dissemination, audience engagement, and participatory communication processes, with a strong emphasis on cultural sensitivity and inclusivity. The paper delves into the transformative potential of AI to enhance developmental outcomes, bridging gaps in access to information and fostering dialogue among various stakeholders. Concurrently, the study addresses the ethical considerations and risks inherent in algorithmic biases and the digital divide, underscoring the need for mindfulness in deploying these technologies. This exploration ultimately aims to provide insights for practitioners and policymakers in leveraging AI’s capabilities while prioritizing sustainable development and cultural respect. By advocating for a balanced approach, the paper seeks to promote technological innovation within a framework that values equity, diversity, and community empowerment in the realm of development communication.
Determination of Noise Pollution Base from Welding and Fabrication Workshop in Akungba-Akoko, South West Nigeria
Authors: A. C. Tomiwa, , O. O. Oladele,
Published: December 2024

Determination of noise pollution base line of welding and fabrication workshop was carried out at some designated welding and fabrication workshops. These measurements was carried out in 10 different locations using the digital sound level meter of model 40773L. The sound pressure Level (SPL) was measured for every 2 minutes for 2hrs (120mins) and the equivalent noise level (Leq), Percentile (L10, L90) and the Noise Pollution Level (LNP) was also calculated. Fast Fourier Transformation was used to interpolate between minutes to give value in seconds and transformed measured values of time to frequency domain. Graphs were also plotted for noise against time and for power against the transformed measured values which are in frequency domain. The result of the research show that the equivalent continuous noise level in the selected site are SITE A: 94.74Db, SITE B: 89.82dB, SITE C: 92.90dB, SITE D: 90.03dB, SITE E: 87.10dB, SITE F: 87.86dB, SITE G: 91.33dB, SITE H: 92.86dB, SITE I: 89.24dB, and SITE J: 89.02dB, showing that some sites are noisier than others and the sum of the average values of noise data in welding and fabrication workshop in Ondo State metropolis is 90.50dB Results obtained are above the FEPA recommended values 90 dB for 8hrs exposure time, which put limitations to effectiveness of signal transmissions that may lead to the possible health hazard. The noise level highlighted which include Annoyance, Cardiovascular disturbance, and impalement of task performance and induced hearing loss. Appropriate suggestions which include the use of ear muffs have been made in order to prevent these hazards.
Comprehensive Benchmarking Analysis for Evaluating Effectiveness of Transfer Learning-based Feature Engineering in AutoML
Authors: Sırt Merve , Eyüpoğlu Can
Published: December 2024

This study conducts a comprehensive benchmarking analysis to evaluate the effectiveness of transfer learning-based feature engineering in Automated Machine Learning (AutoML) systems. The research compares traditional manual feature engineering, standard AutoML approaches, and transfer learning-enhanced AutoML across diverse data modalities, including images, text, and tabular data. Experimental evaluations were carried out using CIFAR-10, IMDB Reviews, and Adult Census Income datasets, focusing on assessing each approach in terms of model performance, training time, and resource utilization. The findings reveal that transfer learning-enhanced AutoML significantly reduces training time by up to 45% while improving model accuracy by up to 20%, particularly for image and text datasets. Furthermore, scenarios with high feature reuse rates demonstrated memory utilization improvements of up to 30%. These results underscore the substantial advantages of integrating transfer learning into AutoML systems for optimizing feature engineering processes.
Assessment of aromatic nitro compounds and phenol biodegradation by micro-mycetes in industrial effluents
Authors: Bondar Polina
Published: December 2024

The paper analyses the experimental results of microbiological utilisation of mononitrotoluene and phenol at concentrations of 20, 50 and 70 mg/l by strains of Trichoderma fungi. According to the research, all the strains under study are able to grow in the presence of mononitrotoluene as the only source of nitrogen nutrition and phenol as the only source of carbon and energy. However, the strains have different sensitivity to changes in their concentration in the medium. Indeed, the strains under study are able to degrade mononitrotoluene and phenol in liquid medium. The maximum efficiency of mononitrotoluene biodegradation was 66% using Trichoderma koningii strain ‘TSL-06’, and that of phenol was 95% using Trichoderma harzianum strain ‘M99/5’. Based on the results, we selected perspective strains for biodegradation of mononitrotoluene and phenol by surface and deep cultivation methods, as well as for the development of a biopreparation based on fungi of the genus Trichoderma in an immersion biotechnological system.
Study of epoxy resin modification with maleic anhydride and the possibility of its application for the protective coatings
Authors: Korsakov Artem , Nedorubov Artem , Pashkov Andrey , Shalygina Taisiya , Voronchihin Vasiliy , Vlasov Valery
Published: December 2024

The paper proposes a method of modifying ED-20 epoxy resin with maleic anhydride to ensure its functionalisation. IR spectroscopy confirmed the modification of ED-20 resin with maleic anhydride. Modified ED-20 resin was used for production of protective coatings of ‘flexible’ stone type. The proposed composition of the polymer base of the coating has the required functional properties and allows ones to substitute imported acrylic dispersion SORBUS.
Activity of polymeric surfactants in aqueous solutions and prospects of their application as paint dispersants
Authors: Moreva Nadezhda , Razgovorov Pavel
Published: December 2024

The article analyses literature sources and general classification of surface-active substances (surfactants). The analysis explains the scientific interest in the development of new high molecular weight and polymeric compounds changing the surface tension on the prase boundaries. The article gives examples of the use of polymeric surfactants in various areas for the chemical industry and in construction (modified additives in concrete, protective compositions and paint compositions) itself. Despite the market of synthesised polymeric surfactants has not undergone global changes in recent years, the modern stage of scientific development has revealed a range of promising modifiers. Adding these modifiers to the systems provides a predictable effect of creating tenacious compositions with good adhesion to the surface of building materials and structures, as well as obtaining water-resistant coatings on the basis of such compositions.
O-alkylation of 4-hydroxybenzolsulfonamide by N-substituted 2-chloroacetamides and 5-(chloromethyl)-3-aryl-1,2,4-oxadiazoles
Authors: Vasil'eva Elena , Polunina Polina , Balbuckiy Egor , Proskurina Irina , Ivanovskiy Sergey , Shetnev Anton , Korsakov Mikhail
Published: December 2024

The paper presents a method for the synthesis of new representatives of the primary benzenesulfonamides class. They are promising agents for the treatment of open-angle glaucoma and neurodegenerative diseases. The authors have developed a mechanism for the O-alkylation of 4-hydroxybenzene sulfonamide with alkylating agents of different nature. The method provides mild conditions and selectivity of the process. The paper shows the necessity of activation of N-substituted 2-chloroacetamides and 5-(chloromethyl)-3-aryl-1,2,4-oxadiazoles by catalytic addition of potassium iodide in O-alkylation reactions of phenols. The authors demonstrated the applicability of the developed methodology on 12 examples of O-alkyl derivatives of 4-hydroxybenzene sulfonamide obtained in yields from 28 to 86%. The research proved the purity and structure of the new compounds by the combined methods of 1H NMR, 13C NMR, and elemental analysis.
INSPECTIFY: MOBILE APPLICATION FOR SUPPORTING AIRPORT FACILITY TERMINAL INSPECTION SERVICE
Authors: Gultom Venny Oktarina
Published: December 2024

Operational activities at the airport are highly dependent on the efficiency and reliability of facilities, and formal reporting evidence is needed to improve the quality of facilities inspections at the Terminal Inspection Service (TIS) unit, as well as to serve as monitoring evidence that will be used as a basis for facility improvement evaluations. This study aims to design and develop the Inspectify application. The research methodology used is the Research and Development (R&D) method with the Borg and Gall research model. The study results show that the Inspectify application can facilitate the reporting process of facility damages and maintenance while improving the response to issues occurring since this application has features to track the status of repairs and receive real-time notifications. This application supported TIS personnel in conducting inspections more effectively and efficiently. Implementing this application is expected to contribute positively to airport operations, improve the efficiency of TIS personnel’s work, become the TIS data center, and increase overall passenger satisfaction.
WEBSITE-BASED INFORMATION SYSTEM DEVELOPMENT FOR APPLYING TEMPORARY AIRPORT PASS REGISTRATION
Authors: Adilia parmono Zalzariana , Parjan Parjan , Andayani Thursina , Azzahra Vania Nadhifa , Akaike Hideo
Published: December 2024

Pass visitor is an entry permit used by guests (visitors) who carry out visits or activities at the airport, and the management and registration process for applying is still done manually. This research aims to build a website-based application for registered pass visitors and conduct black box testing. The research and development (R&D) method uses the System Life Development Cycle (SDLC) technique with waterfall as a development model that involves analysis, design, implementation, and testing. Data collection by conducting observation and document analysis. The result is a website-based application that is designed using Google Apps Script. This application has been validated by a media design expert with a validation result of 82.10% and a material expert with a validation result of 86.25% with the category "Very Feasible" and tested using Black box testing. The website information system for applying for Pass visitor registration can be used on various platforms and runs flexibly anywhere and anytime online. By conducting this system, airport management can achieve time flexibility in the registration process and convenience in managing pass visitor data storage. This system simplifies the registration process to improve the quality and security of the airport.
LEVERAGING ON CONTINUAL MACHINE LEARNING FOR REAL TIME TRADING IN FINANCIAL MARKETS
Authors: Osegi Emmanuel Ndidi , Anıreh Vincent Ike , Emeto Ifeanyi. C , Ibiobu Noble. A , Orove Osu Joshua , Agi Uchechukwu
Published: December 2024

In this research paper, a novel neural inspired approach called the Auditory Machine Intelligence (AMI) is proposed for the prediction of cryptocurrency price - the ripple (XRP/USD) trading pair. The AMI is implemented as part of an LUNO API systems app and real-time data generated and captured. Comparisons were also made with a popular method used in cryptocurrency trading called the Non-linear Auto-Regressive Neural Network (NARX-net). The experimental results considering the 40%, 60% and 80% training were reported for the both techniques. From the experimental results, it was clearly seen that on the average, the NeuroAMI will outperform the NARXnet technique at the 60% and 80% input training data levels; however, the NARXnet technique fared better on the average at the 40% input training data level.
Heads or Tales: The Fate of Poe’s Female Storytellers
Authors: Sweeney Susan Elizabeth
Published: December 2024

Two comic stories by Edgar Allan Poe, written seven years apart, reveal a striking similarity. In both “A Predicament” (which is usually appended to “How to Write a Blackwood Article”) and “The Thousand-and-Second Tale of Scheherazade,” a female storyteller is beheaded while telling a story. Indeed, she is beheaded because of the story she has chosen to tell. What are we to make of this disturbing motif? An investigation of Poe’s references to capital punishment—especially decapitation—and to female storytelling—especially in The Arabian Nights—suggests possible explanations for why he twice conflated these elements in such a grotesque and unsettling way.
Mark Twain Legacies in the Dawn of Gen AI
Authors: Michelson Bruce
Published: December 2024

With the disruptive rise of generative AI, literary scholars face unprecedented interpretive challenges involving basic assumptions and practices. Amid the automated outsourcing of discourse essential to coalescence of human intellect and personal identity, Mark Twain’s imaginative and literary journey can heighten our awareness of imperiled foundational relationships of self to utterance. Early sketches portray struggles with words as high-stakes adventures in self-creation; in the final Mysterious Stranger manuscripts, however, Mark Twain approaches celebration of creative process without restrictions and inhibitions, even those of one discrete and supposedly consequential identity.
Rabelaisian Twain or American Rabelais: The Architectonics of the Carn(Evil)esque in The Mysterious Stranger Manuscripts
Authors: Najjar Ghaylen Ben Amor
Published: December 2024

The article examines opposed carnivalesque modes in Mark Twain’s The Mysterious Stranger Manuscripts. In so doing, it reveals the way Twain transposes different traditions of the carnivalesque. The literary “generic contact” with François Rabelais’s Gargantua and Pantagruel is overwritten with nonliterary local forms of the carnival like the freak show, the charivari, and the minstrel show. The article argues that while the Rabelaisian tropes destabilize the figures of authority and create a sanguine tone, American carnival reinforces hierarchies and establishes what Mikhail Bakhtin calls “reduced laughter.” As a result of this palimpsesteous carnivalization, the moral questions of evil and answerability emerge. The architectonics of the carn(Evil)esque shifts the focus from the traditional political paradigm of counter-culture/safety-valve in carnival theory to moral, psychological, and existential trajectories. More flexible frameworks like cosmic carnival or the dream serve Twain to question the nature of our reality and to engage us in a process of self-examination.
Jim’s Optimism, Huck’s Pessimism: Transbellum Perspectives in Adventures of Huckleberry Finn
Authors: Ikoma Kumi
Published: December 2024

This article shows how the episodes in chapters 14 and 23 of Adventures of Huck Finn can be interpreted as Mark Twain’s commentary on America and its problems that persisted throughout the antebellum and postbellum period. Scholars have argued that chapter 32 in which moral sentiment like Huck’s decision is overturned by Tom Sawyer’s scheme implies a postwar perspective. However, this article discusses that episodes before chapter 31 suggest the problems of racial inequality and social hierarchy that remained in postbellum America. This article especially looks at how Jim and Huck’s views on “kings” in chapters 14 and 23 can be taken as their differing perspectives on American society. Whereas Jim implicitly refers to his ideals about human equality, Huck takes a sober attitude toward Jim’s progressive view. Focusing on Huck and Jim’s dialogue in chapters 14 and 23, this article delves into Huck and Jim’s transbellum views on America.
Navigating the Textual Currents of Reconstruction in Mark Twain’s Life on the Mississippi
Authors: Ashland Alexander J.
Published: December 2024

This article argues that the sketchlike patchwork of texts, identities, and histories that make up Mark Twain’s Life on the Mississippi emerges through the narrative mixing of passengers and pilots. Situating Twain’s Life in relation to Washington Irving’s The Sketch-Book of Geoffrey Crayon, Gent., the article suggests that in the aftermath of slavery, Civil War, and Reconstruction, Twain attempted to define the New (South) against the Old using the genre of the sketch. Concerned as it was with the ruins, relics, and monuments of the nation’s cultural ancestors, Irving’s Sketch-Book provided a useful framework for a writer like Twain whose Life on the Mississippi reconceptualized post-Reconstruction expressions of new southern literary identities. Lastly, the article argues that the many mixtures present in Twain’s Life are predicated on Irving’s earlier explorations of “racial” degeneracy, blended nations, hybrid identities, cross-cultural exchange, intertextuality, indigeneity, and mixed-race dynamics.
Ukraine in world democracy ratings : мonograph
Authors: Kondratenko Oleg
Published: December 2024

The monograph covers the issue of political governance in Ukraine in accordance with the world rankings of democracy. The research and analytical reports of such international non-governmental organizations as «Freedom House», «The Economist IntelligenceUnit», «Reporter without Borders» and others were taken into account. Based on the analysis of these materials, the dynamics of the index and rating of democracy of Ukraine against the background of the state of global freedom during 1996–2021 –a period ofactive monitoring of Ukrainian political processes.The monograph is intended for social scientists, politicians, experts and anyone interested in the democratization of management processes in Ukraine.
Kültürel Miras ve Erişilebilirlik: Çanakkale Kilitbahir Kale Müzesi
Authors: Metin Parlak Tuğçenur , Çelebi Şeker Nuriye Nida
Published: December 2024

Kilitbahir Kale Müzesi, Çanakkale Boğazı'nın Avrupa yakasında yer alan ve 1452 yılında Fatih Sultan Mehmet tarafından yaptırılan bir Osmanlı kalesidir. 2018 yılında müze olarak düzenlenerek ziyarete açılmıştır. Müze, Osmanlı kalelerinin mimarisini, teşkilat yapısını, savunmasını, ticaret alanlarını, ibadet alanlarını ve günlük yaşamını yansıtan koleksiyonlara ve sergilere ev sahipliği yapmaktadır. Bu çalışmada metodoloji, dezavantajlı gruplara yönelik Kilitbahir Kale Müzesi’ndeki müzecilik hizmeti, bu hizmetin erişilebilirliği ve dezavantajlı grupların müze mekânlarındaki gereksinimleri ve karşılaştıkları sorunlara yönelik çalışma yapılmasına yönelik kurgulanmıştır. Çalışma kapsamında Kilitbahir Kale Müzesi'nin kapsayıcı tasarım bağlamında erişilebilirliği değerlendirilmiştir. Bu değerlendirme için, bir raporlama çerçevesi kurgulanmış, müzenin fiziksel, mekânsal ve içeriksel erişilebilirliği olmak üzere üç temel kriter belirlenmiştir. Belirlenen kriterler bağlamında bir dizi soru oluşturulmuştur ve sorulara cevap aranmıştır. Yapılan çalışma sonucunda, herkes için tasarım ilkeleri doğrultusunda bazı önlemlerin alındığı, ancak bu önlemlerin dezavantajlı bireylerin ihtiyaçlarını tam olarak karşılamadığı belirlenmiştir. Ortaya çıkan soruna yönelik Kilitbahir Kale Müzesi'nin erişilebilirliğini artırmak için bir dizi tavsiye niteliğinde öneriler geliştirilerek dezavantajlı bireyler için daha erişilebilir ve kapsayıcı bir hale getirilmesi amaçlanmıştır.