bluuebunny/crossref_metadata_2025 huggingface dataset:
The differentiated STEM approach in problem-based learning: Can it enhance students’ critical thinking skills in basic chemistry laws
Authors: Majid Karima , Mulyani Sri , Ulfa Maria , Shidiq Ari Syahidul
Published: December 2024

The 21st century highlights the critical role of education in developing life skills, including critical thinking, to address rapid global changes. The learning process in schools becomes a critical factor in strengthening these skills. Therefore, this study aims to determine the effect of the Differentiated Problem-Based Learning (PBL) model with the STEM approach on students' critical thinking skills on basic chemical laws in class X of a Senior High School in Surakarta. Samples were selected using cluster random sampling to choose two classes as samples, namely, the experimental and control classes. Research data was collected through a post-test using an essay measuring students' critical thinking skills. The results were analyzed using the Kruskal-Wallis’s test based on the mean post-test scores of the experimental class (73.00) and the control class (64.4), yielding a significance value of 0.004 (< 0.05). These results indicate a positive effect of Differentiated PBL-STEM on students' critical thinking skills. Skilled group students consistently demonstrated critical thinking skills, while students in the intervention and intermediate groups showed improvements from the initial diagnostic results of the learning process.
Sosialisasi Pengelolaan Hama Tanaman Bawang Merah (Allium ascalonicum L.) Dataran Tinggi dengan Cara Menerapkan Sistem Budidaya Tanaman yang Baik di Desa Pasigaran, Kecamatan Tanjungsari, Kabupaten Sumedang, Jawa Barat
Authors: Rasiska Siska , Suminar Erni , Nuraini Anne , Yuniarti Anni , Setiawan Iwan
Published: December 2024

Desa Pasigaran terletak di Kecamatan Tanjungsari, Kabupaten Sumedang dengan ketinggian tempat 979 meter di atas permukaan laut. Pengunaan lahannya didominasi oleh lahan sawah, lahan kering, dan permukiman. Lahan kering dan pekarangan di permukiman berpotensi dikembangkan sebagai lahan tanaman bawang merah yang memiliki nilai kelayakan usahatani yang tinggi.Salah satu kendala produksi tanaman bawang merah adalah serangan hama, yang dapat diatasi salah satunya dengan praktik budidaya tanaman bawang yang baik. Kegiatan pengabdian ini bertujuan untuk mensosialisasikan hama utama tanaman bawang merah dan mempraktikkan cara pengendaliannya. Pendekatan yang dilakukan dalam kegiatan pengabdian ini adalah 1) diskusi berupa tukar pikiran mengenai nilai penting tanaman bawang merah dan masalah-masalah umum dalam usahatani bawang merah; 2) penyuluhan mengenai hama utama tanaman bawang merah dan cara pengendaliannya; serta 3) pelatihan mengenai praktik budidaya tanaman bawang yang baik. Kegiatan pengabdian ini melibatkan sekelompok wanita tani yang berjumlah 20 orang. Berdasarkan hasil diskusi menunjukkan para peserta belum mengetahui secara tepat nilai ekonomi, sosial, dan budaya dari tanaman bawang merah di Indonesia, namun mengetahui sebagian manfaat dari tanaman tersebut. Selain itu, para peserta tidak mengetahui hama utama tanaman bawang merah dan cara pengendaliannya . Hasil pengabdian menunjukkan bahwa sebagian besar peserta dapat  mengikuti semua kegiatan dengan baik, terutama ketika dialog, penyuluhan dan praktek secara langsung di lapangan. Kegiatan inimampu 1) meningkatkan pengetahuan mengenai praktik budidaya tanaman bawang yang baik; 2) meningkatkan kewaspadaan terhadap hama utama tanaman bawang; dan 3) meningkatkan ketrampilan dalam mengendalikan hama tanaman bawang merah.
Pengkayaan Kotoran Sapi dengan Penambahan Orgadek, EM4 dan Molase Untuk Meningkatkan Kulitas Kompos Di Desa Pajagan, Kecamatan Cisitu Kabupaten Sumedang
Authors: Suriadikusumah Abraham
Published: December 2024

Kotoran sapi pada umumnya dipandang sebagai suatu limbah bagi lingkungan, apabila di buang begitu saja ke lahan atau perairan umum, tanpa melalui pengelolaan yang memadai. Dengan pembuatan kompos, limbah organik berupa kotoran sapi dapat dimanfaatkan menjadi material yang berguna untuk lingkungan, terutama untuk menunjang sektor pertanian. Kotoran sapi sudah lama dikenal sebagai bahan utama pembuatan kompos, bahan ini tersedia cukup banyak di beberapa sentra peternakan. Untuk meningkatkan kualitas kompos yang dihasilkan, telah dilakukan penambahan beberapa bahan lain, seperti Orgadek, EM4 dan Molase. Metode ini terbilang baru dan belum banyak dilakukan oleh petani. Pembuatan kompos ini telah diaplikasikan dalam kegiatan pengabdian masyarakat di Desa Pajagan, Kecamatan Cisitu - Kabupaten Sumedang, pada bulan Juli 2023. Kegiatan ini diharapkan dapat menambah pemahaman khususnya petani, dalam usaha meningkatkan produksi pertaniannya melalui penggunaan kompos yang lebih “baik”. Metode pengabdian masyarakat dilakukan melalui pemaparan oleh tim, berupa: (1) maksud,  tujuan, dan pembuatan kompos yang diperkaya; (2) penjelasan tentang bahan-bahan yang digunakan (kotoran sapi, Orgadek, EM4 dan Molase), peran dan manfaat dari masing-masing bahan; (3) tatacara pelaksanaan pembuatan kompos di lapangan/di kebun; (4) diskusi dan tanya jawab dengan peserta/petani; dan diakhiri dengan demonstrasi pembuatan kompos sapi yang diperkaya di lapangan diikuti oleh masyarakat/petani.Kegiatan pembuatan kompos yang diperkaya ini diharapkan, petani dapat membuat dan mengaplikasikannya pada lahan-lahan pertanian mereka guna meningkatkan hasil pertanian yang lebih baik atau lebih tinggi di bandingkan dengan kompos kotoran sapi biasa.
Efektivitas atraktan air rendaman jerami Padi (Oryza sativa, L.) terhadap nyamuk Culex spp. dengan menggunakan perangkap (trapping)
Authors: Analisa Analisa , Kamal Mustafa
Published: December 2024

Penyakit penyakit kaki gajah disebabkan oleh cacing filaria melalui vektor utamanya nyamuk Culex spp. Upaya pengendalian nyamuk yang aman bagi lingkungan menggunakan bahan alami atraktan mengggunakan perangkap (trapping). Tujuan penelitian yaitu untuk mengetahui jumlah dan jenis nyamuk yang terperangkap, konsentrasi yang paling berpotensi mengundang nyamuk Culex spp. serta pengaruh lingkungan keadaan lingkungan. Penelitian dilaksanakan di Kelurahan Pahlawan, Kecamatan Kemuning, Kota Palembang dan Laboratorium Biosistematika, Jurusan Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Sriwijaya, Januari hingga Maret 2024. Penelitian eksperimental menggunakan RAK non faktorial dengan 6 perlakuan dan 4 pengulangan dengan total trapping 48, terdiri dari dua stasiun dan konsentrasi rendaman jerami padi 0.2%, 0.4%, 0.8%, 1.6%, 3.2% serta kontrol (asam laktat 20%). Parameter yang diamati yaitu jumlah dan jenis nyamuk yang terperangkap, konsentrasi yang paling banyak memerangkap nyamuk Culex spp., parameter atraktan pH, warna dan bau, serta parameter lingkungan suhu dan kelembaban. Analisis data menggunakan ANOVA dan uji Duncan. Hasil penelitian didapatkan 120 ekor Culex spp. yang terdiri dari 91 nyamuk Culex spp. dan 29 nyamuk Aedes spp., konsentrasi 0.8% paling banyak memerangkap nyamuk Culex spp.
THE TRANSLATION OF THE POEM "THE PRISONER OF CHILION" AS A PSYCHOLOGICAL REACTION TO THE EVENTS OF THE 19TH CENTURY
Authors: Mnatsakanyan Yeva
Published: December 2024

Tumanyan’s translation of J. Byron’s “The Prisoner of Chillon” is the only translation of the given work into Armenian up today. The purpose of the article is to reveal the motives and events that occurred more than 100 years ago that determined the choice of the poem for translation, which continue haunting the Armenian people today, once again confronting them with the tragic problem of survival.

A number of tasks have been put forward in order to achieve the goals of the article, which are the following: to study the theoretical literature concerning the art of translation, as well as the literary and critical reviews of J. Byron’s poem “The Prisoner of Chillon” and the translation of the given work by H. Tumanyan, to expose the socio-political motives for the choice of works for translation, on which the concepts of understanding the values of Tumanyan’s literary and creative process are based, to formulate an important message left to us by two geniuses Byron and Tumanyan.
The article concludes that even today, on the endless background of geopolitical contradictions, conflicts and violence of the 21st century, both the poem itself and its Armenian translation are convincing evidence of the high awareness of national dignity and the natural right to freedom of two great poets J. Byron and H. Tumanyan, as well as the statement of universal humanism and universal Christian love. Humanity must return to its original, immaculate appearance in order to be saved from the coming catastrophe and death.
THE EXPRESSION OF THE ARMENIAN PEOPLE AS THE CARRIER OF THE CHRISTIAN VALUE SYSTEM IN THE "METS MHER" BRANCH OF THE ARMENIAN FOLK EPIC
Authors: Ter-Grigoryan Lilit , Ayvazyan Arus
Published: December 2024

The Armenian epic embodies the collective consciousness and values of the people, which, transcending space and time, have been distilled to retain only what is true, valuable, and intrinsic to their identity. At the core of these moral principles lies the Christian value system, which has evolved over centuries to form a stable and enduring foundation. This system is prominently reflected throughout the Armenian epic, including its "Mets Mher" branch, illustrating that the Armenian People, as the earliest adopters of Christianity as a state religion, were the primary custodians of these Christian beliefs and values.
In the Armenian epic, God is subtly present in all aspects of the Armenian people's lives. Their deep faith is reflected not only in the actions and events involving the heroes and the nation as a whole but also in their speech, behavior, and interpretations of various occurrences. The Armenian epic stands as one of humanity's most brilliant artistic creations, highlighting the essential characteristics of the Armenian people. Their Christian faith is an inseparable part of their worldview and understanding of life. Therefore, to foster national self-awareness in the younger generation, it is important to develop a special program for a deeper and more comprehensive study of the Armenian epic in modern schools.
THE CREATIVE WORLD OF GEVORG DEVRIKYAN
Authors: Yerkanyan Anna
Published: December 2024

The present article presents the general description of the creative work of Gevorg Devrikyan, one of the original figures of the new period of Armenian prose of the 20th century. The article provides an overview of the works of writers of the 1960-80s, indicates their place and role in the Armenian literature, as well as highlights the significance of the creative work of Gevorg Devrikyan. The connection between G. Devrikyan’s works and outstanding figures of the Armenian culture is emphasized, and the problem of aestheticization of history is also presented. The works of the first period of the creative work of the writer, essays and stories, novels and historical novels, the collections of stories on historical and satirical themes are listed, indicating their place and role in the Armenian Soviet prose.
Gevorg Devrikyan’s historical novels, which occupy a special place among the Armenian Soviet historical novels, have been also emphasized. The issues raised in these historical novels are relevant and portray the contemporary life. The importance of G. Devrikyan's historical novels, their educational and didactic nature, as well as the vivid manifestation of patriotism in them are emphasized.
The article also examines the writer's popular and scientific works, stressing the author's great contribution to this area. When reading popular and scientific works and articles, it is immediately noticeable that they came from the writer’s pen: when considering any issue or phenomenon, in addition to the conclusion itself, artistic summaries are presented here, and the portraits of great figures of the Armenian history and culture develop into artistic images. An important place is given to the work “The Great Armenian Figures”, intended for the readers being interested in the Armenian history, literature and culture.                                                  
The article also examines the collections of stories based on the medieval evidences. Depicting medieval copyists and manuscript illustrators in almost all of his works, G. Devrikian describes the conditions under which medieval parchment scrolls, tags (chants) and antunis (songs of homeless) were copied and created.
THE EDUCATIONAL VALUE OF THE PRINTING WORK OF ABGAR DPIR (SCRIBE) TOKHATETSI
Authors: Melkumyan Kristine
Published: December 2024

In this article, we have examined the printing work of Abgar the Scribe Tokhatetsi and its educational value. Turning to his published books, we considered them a continuation of the printing work started by Hakob Meghapart. We have evaluated the activities of Abgar the Scribe Tokhatetsi from the point of cultural, educational, social, and political functionality, firstly emphasizing the main goal of our article, which is the highlighting of educational value. Unfortunately, the fact that most of the books published by Abgar the Scribe Tokhatetsi have not reached us or have done so with defects and shortcomings, or that we can form an idea about them only due to the descriptions of eyewitnesses and various testimonies, somewhat hinders some issues, especially the possibility of complete analysis of inclusions of Armenian literature. On the other hand, since Abgar the Scribe Tokhatetsi was the continuer of the printing work started by Hakob Meghapart, not only in terms of itself but also in the inclusion of various operational parts, from the ideological, educational point of view, by comparing the books printed by those two prominent figures of the dawn of Armenian printing, it is sometimes possible to ensure certain completeness of ideas from the point of insights and principles. It should be emphasized that the books printed or published in this period were first of all characterized by high functionality, no book was published just like that. In its turn, the printing work of Abgar Dpir Tokhatetsu further expanded the functionality of the Armenian book and increased its educational value. Therefore, almost every fact of Armenian printing during this period, regardless of whether they are preserved or just mentioned or described, can be observed in a broad cultural and operational context.
FORMATION STUDENTS’ READING SKILLS AT THE NON LINGUISTIC FACULTY
Authors: Petrosyan Amalya
Published: December 2024

Reading is a cognitive thinking activity of an analytical nature and is determined by the purpose of teaching.
Purpose of reading regulates its process. Depending on the purpose, the reader perceives the text in large or small doses with expansion or collapse of visual images and inner speech.
Reading is taught as an oral-speech activity. The process of comprehending information is seen as an activity in which learners solve various communicative tasks.
In the learning process, reading a text should always act as a concrete manifestation of mediated communication aimed at developing students' abilities at a specific stage appropriate to a given level.
The process of content comprehension is determined by the task given to the students before reading the text and when they understand the content of the text. For this reason, it is very important that both the task and the method of checking comprehension are appropriate to each other and to the type of subject being taught.
TRANSFORMASI QIWAMAH DALAM KONTEKS EKONOMI (KETIKA ISTRI MENJADI TULANG PUNGGUNG KELUARGA)
Authors: Asrori Khozinatul
Published: December 2024

Penelitian ini bertujuan untuk memahami transformasi konsep Qiwamah dalam konteks ekonomi modern, terutama ketika istri menjadi pencari nafkah utama dalam keluarga Muslim. Menggunakan pendekatan kualitatif dengan metode penelitian pustaka (library research), studi ini menganalisis berbagai literatur, artikel, buku, jurnal akademik, dan sumber-sumber relevan lainnya. Hasil penelitian menunjukkan bahwa meskipun terjadi perubahan dalam tanggung jawab ekonomi, prinsip Qiwamah tetap relevan, dengan penekanan yang lebih besar pada kerjasama, konsultasi (syura), dan kemitraan antara suami dan istri. Esensi Qiwamah sebagai panduan moral dan spiritual dalam keluarga tidak hilang, melainkan disesuaikan dengan kebutuhan zaman. Penelitian ini menegaskan pentingnya adaptasi dan fleksibilitas dalam menjaga keseimbangan dan harmoni dalam keluarga, sambil tetap berpegang pada prinsip-prinsip Islam yang menekankan keadilan, tanggung jawab bersama, dan penghargaan terhadap peran masing-masing anggota keluarga.
A bibliometric analysis of Chinese higher education policy in the past two decades: Sustainable development and internationalization
Authors: Sukjairungwattana Paisan , Luo Zhengying , Hu Haiyang , Liu Wen , Xu Wei
Published: January 2025

This study aims to explore the research on Chinese higher education policy from 2005 to 2024 through a bibliometric analysis. It is revealed that a continuous growth trend and sustained academic interest in this field. Mainland China leads in publication quantity, showcasing the active involvement of Chinese scholars in higher education policy research. Institutions like Peking University, the University of Hong Kong, and Beijing Normal University play significant roles in this research domain. The focus of research has shifted from student attitudes to international students, teachers, innovation models, changing demands, and urban education development, reflecting a growing emphasis on sustainability and internationalization. The study highlights the positive development trajectory of Chinese higher education policy research, with expanding research focuses and deepening concerns for sustainability and internationalization.
Leer desde la biblioteca escolar: un análisis crítico de prácticas lectoras en centros de secundaria en Andalucía
Authors: Rubio Perea Engracia María
Published: December 2024

Este trabajo analiza los artículos publicados entre 2016-2023 en la revista virtual de las bibliotecas escolares que coordina la Consejería de Desarrollo Educativo y Formación Profesional de la Junta de Andalucía. El propósito es analizar qué prácticas lectoras se realizan desde la biblioteca escolar en los centros públicos de Educación Secundaria con el objeto de definir y denominar qué criterios o patrones comunes permiten identificarlas como modélicas y ser replicables entre los más jóvenes. La metodología, enmarcada en el paradigma cualitativo, aborda el método de análisis temático para el tratamiento de la información, basado en la familiarización con los datos, búsqueda de temas o patrones, revisión y presentación de los resultados. En la revisión del contenido se han encontrado 5 patrones comunes: la lectura por placer y como desarrollo de la creatividad, la lectura para indagar y aprender a aprender, la lectura como espacio de encuentro y pluralidad de pensamientos, la lectura como acción de colaboración, y la lectura y la sociedad en red. El análisis de los resultados ha servido como referencia para proponer, a modo de decálogo, unas líneas de actuación para buenas prácticas lectoras entre los más jóvenes.
Возможности использования данных группировки спутников ДЗЗ стран БРИКС для решения тематических задач получения информации о лесных экосистемах
Authors: Иванов С.В. , Сидоренков В.М. , Ачиколова Ю.С. , Астапов Д.О. , Тищенко П.А. , Буряк Л.В. , Рыбкин А.С.
Published: December 2024

В статье рассмотрены различные методы тематического дешифрирования для получения информации о лесах на основе данных группировки спутников дистанционного зондирования Земли стран БРИКС. Представленное исследование является частью работы, выполненной в рамках соглашения между государственной корпорацией «Роскосмос», Индийской организацией космических исследований, Китайской национальной космической администрацией и Южноафриканским национальным космическим агентством. В рамках проекта предоставлена съемка со спутников Китая, Бразилии и Индии для территории пилотного полигона, расположенного на территории Шушенского и Ермаковского районов Красноярского края и Таштыпского района Республики Хакасия. Результаты исследования показали возможность определения лесных и нелесных территорий, количественных и качественных показателей лесов по спектрально-отражательным характеристикам насаждений съемки со спутников Метеор-М и Resourcesat/LIS.

The article discusses various methods of imagery data thematic interpretation for obtaining information about forests based on data from the BRICS countries constellation of remote sensing satellites. The presented research is a part of the work performed within the framework of an agreement between the Russian Space Agency, Indian Space Research Organization, China National Space Administration and South African National Space Agency. Within the project, satellite imagery from China, Brazil and India was provided for the pilot site, located on the territory of the Shushensky and Ermakovsky districts of the Krasnoyarsk Territory and the Tashtypsky district of the Republic of Khakassia. The study results showed the possibility of determining forest and non-forest areas, quantitative and qualitative forests indicators based on the spectral and reflective characteristics taken from Meteor-M and Resourcesat/LIS satellite imagery.
Оценка хозяйственно ценных признаков сортов хеномелеса (Chaenomeles Lindl.) при интродукции в условиях Москвы
Authors: Локонова А.А. , Макаров С.С. , Крючкова В.А. , Бахман В.Ю.
Published: December 2024

В расширении ассортимента культурных растений для сохранения и оздоровления городской среды важную роль играет интродукция сортов, форм и видов из других географических районов. Представители рода Хеномелес (Chaenomeles Lindl.) являются высокоценными в пищевом, лекарственном и декоративном отношении, красивоцветущими кустарниками, неприхотливыми и устойчивыми к условиям городской среды, к болезням и вредителям. Приведены результаты исследований по изучению 20 сортов хеномелеса, интродуцированных на территории Главного ботанического сада им. Н.В. Цицина РАН (Москва). Сделан анализ визуальных наблюдений за сезонным развитием сортов хеномелеса в возрасте 2–3 лет. Все исследуемые сорта хеномелеса относятся к I и II группам по критерию жизнеспособности. Наилучшей зимостойкостью и более ранним сроком начала цветения отличаются 7 сортов хеномелеса (Pink Storm, Andenken an Karl Ramcke, Red Joy, Fire Dance, Brilliant, Cido, Jet Trail), перспективных для выращивания в природно-климатических условиях Москвы.

The introduction of varieties, forms and species from other geographical areas plays an important role in expanding the range of cultivated plants for the preservation and improvement of the urban environment. Representatives of the genus Chaenomeles Lindl. are highly valuable in nutritional, medicinal and ornamental terms, beautifully flowering shrubs, unpretentious and resistant to urban conditions, diseases and pests. The results of research on the study of 20 Chaenomeles cultivars introduced on the territory of the Tsytsin Main Moscow Botanical Garden of Russian Academy of Sciences (Moscow, Russia). The results of visual observations of the seasonal development of Chaenomeles cultivars at 2-3 years of age are analyzed. All the studied Chaenomeles cultivars belong to groups I and II according to the viability criterion. 7 cultivars of chaenomeles (Pink Storm, Andenken an Karl Ramcke, Red Joy, Fire Dance, Brilliant, Cido, Jet Trail) are distinguished by the best winter hardiness and earlier start of flowering, which indicates its prospects for cultivation in the natural and climatic conditions of the Moscow.
Информационные инструменты в области лесных генетических ресурсов: от международного опыта к национальным решениям (обзор)
Authors: Паленова М.М. , Крутовский К.В.
Published: December 2024

В статье представлен обзор современных международных инструментов и подходов к управлению лесными генетическими ресурсами. Рассматриваются ключевые международные инициативы и инструменты, направленные на сбор, хранение и анализ данных о генетическом разнообразии лесов, а также оценку угроз для различных видов деревьев. Обсуждаются возможности адаптации и использования этих инструментов в России, принимая во внимание уникальные природные условия и масштабы лесных территорий. На основе проведенного анализа сформулированы рекомендации по созданию национальных инструментов, учитывающих международный опыт и адаптированных к российским условиям.

The article provides an overview of contemporary international tools and approaches to managing forest genetic resources. Key international initiatives and instruments aimed at collecting, storing, and analyzing data on forest genetic diversity are examined, as well as assessing threats to various tree species. The possibilities for adapting and applying these tools within the Russian context are discussed, taking into account Russia’s unique natural conditions and vast forested territories. Based on the analysis conducted, recommendations are formulated for creating national tools that take into account international experience and are adapted to Russian specifics.
Investigation of the Factors that Influence Team Performance in Project Management: The Case of Habib Bank Limited
Authors: Sidra Sidra , Wagan Shah Mehmood
Published: January 2025

The financial industry is facing increasing competition and the need for information construction, with Project management being a key factor in success. Challenges include increasing team conflicts, lack of communication, and weak team cohesion, leading to internal turmoil and decreased project performance. To improve Project team performance, domestic commercial banks, examples such as Habib Bank Limited, are highly valuable. This paper proposes a research model based on previous theories and results on team conflict management, focusing on how conflict management methods affect team communication and cohesion, ultimately affecting team performance. The study collected data through electronic questionnaires and used SmartPLS software to evaluate the model’s reliability, validity, common method bias, and multicollinearity. The results showed that Cooperative Conflict Management can improve Project team performance, while competitive conflict management weakens it. Team cohesion mediates between cooperative conflict management and performance, and team communication mediates between cooperative conflict management and performance. The study concludes that improving the bank’s Project team performance in project management is necessary.
Episode Depresi Mayor dalam Cetak Saring
Authors: Aisyah Mega Siti , Amboro Joko Lulut
Published: January 2025

Penciptaan karya seni cetak saring ini dibuat sebagai bentuk penjelasan secara singkat apa saja yang terjadi kepada seseorang yang mengalami episode depresi mayor.  Metode yang digunakan pada penciptaan ini adalah implementasi dan studi pustaka, yaitu  memvisualisasikan  dari ide yang diangkat dikembangkan menjadi sebuah karya seni melalui seni grafis teknik cetak saring. Proses yang dilakukan dalam pembuatan karya cetak saring adalah pembuatan sketsa, mencetak klise, proses pengafdrukan setelah itu proses cetak pada kain. Media yang digunakan pada karya ini adalah kain kanvas/blacu yang memiliki ukuran 50 Cm X 50 Cm, dimana setiap desain karya terdiri dari 4 kali cetak dengan warna yang berbeda. Penciptaan karya seni grafis ini dapat bermanfaat untuk semua orang baik untuk pengetahuan maupun inspirasi pembuatan karya yang memiliki tema serta pembahasan serupa.
Исследование влияния препарата «Полиаминол» на видовой состав активного ила
Authors: Волкова Владислава Николаевна , Дудник Никита Андреевич , Казанцев Илья Максимович , Кунденок Светлана Борисовна
Published: December 2024

У химического реагента «Полиаминол» много преимуществ, одно из которых – маленький расход (на 1 куб. м осадка требуется 300 мл), а значит, небольшие затраты и сокращение складских мощностей. Данный реагент приобрёл большую популярность среди водоканалов, применяется с целью быстрой стабилизации осадка, преобразования его в почвогрунт и исчезновения неприятных запахов. В данной статье впервые исследован состав возвратных дренажных вод от иловых площадок после обработки осадка химическим реагентом под торговым названием «Полиаминол» и изучены изменения видового состава биоценоза активного ила нитриденитрификаторов при его обработке данным реагентом. Показано, что дренажные воды от иловых карт имеют высокое содержание аммония и фосфатов, обработка осадка реагентом из-за возвратных потоков на очистных сооружениях может привести к уменьшению видового состава микроорганизмов активного ила. Дана оценка изменению показателей видового биоценоза активного ила в процессе использования препарата «Полиаминол». Предложено техническое решение, обеспечивающее равномерное введение возвратных вод в напорно-подающий сток, их смешение в приёмной камере. Данное решение обеспечит снижение негативного воздействия на биоценоз активного ила. Результаты исследования важны в практике биологической очистки сточных вод.

The chemical reagent «Polyaminol» has many advantages, one of which is low consumption (300 ml per 1 cubic meter of sediment is required), which means low costs and reduced storage capacity. This reagent has gained great popularity among water utilities for its use to quickly stabilize sediment, turn it into a soil substrate and eliminate unpleasant odors. In this article, for the first time, the composition of return, drainage waters from silt sites after treatment of sediment with a chemical reagent under the trade name «Polyaminol» was studied and changes in the species composition of the biocenosis of active sludge of nitridenitrifiers during its treatment with this reagent were studied. It is shown that drainage waters from silt maps have a high content of ammonium and phosphates, treatment of sediment with a reagent due to reverse flows at sewage treatment plants can lead to a decrease in the species composition of microorganisms of activated sludge. The assessment of changes in the indicators of the specific biocenosis of activated sludge during the use of the drug «Polyaminol» is given. A technical solution has been proposed to ensure the uniform flow of return waters into the pressure drainage and their mixing in the receiving chamber. This solution will ensure a reduction in the negative impact on the biocenosis active sludge. The results of the study are important in the practice of biological wastewater treatment.
Моделирование волновых процессов в толстостенной вязкоупругой сферической оболочке при импульсном воздействии
Authors: Саиян Сергей Гургенович , Модестов Константин Анатольевич , Брыгар Олег Андреевич
Published: December 2024

В статье исследуется задача о распространении продольных волн в толстостенной вязкоупругой сферической оболочке при импульсном воздействии на ее внутреннюю поверхность. В работе предлагается численно-аналитическое решение задачи с использованием преобразования Лапласа. Модель вязкоупругости описывается через оператор модуля сдвига релаксирующего по модели Кельвина – Фойгта без учета релаксации объемного модуля. Авторы выделяют важные аспекты, такие как необходимость учета высокочастотных колебаний и инерционных эффектов, возникающих при импульсных воздействиях. Вязкоупругие материалы демонстрируют сложное поведение, зависимое от времени и частоты приложения нагрузки, что требует использования соответствующих моделей поведения. В статье представлены графики зависимости перемещений от радиальной переменной при различных временных интервалах, что позволяет лучше понять реакцию вязкоупругой оболочки под воздействием импульсной нагрузки. Результаты исследования могут быть полезны в разработке конструкций, подверженных значительным кратковременным нагрузкам (импульсным воздействиям), таких как резервуары высокого давления, трубопроводы, реакторы и т.д.

The article investigates the problem of propagation of longitudinal waves in a thick-walled viscoelastic spherical shell under impulse load on its inner surface. The paper presents a numerical-analytical solution to the problem using the Laplace transform. The viscoelasticity model is described through the shear modulus operator relaxing according to the Kelvin – Voigt model without taking into account the relaxation of the volumetric module. The authors highlight important aspects, such as the need to take into account high-frequency oscillations and inertial effects arising from impulse load. Viscoelastic materials exhibit complex behavior depending on the time and frequency of load application, which requires the use of appropriate behaviors. The article presents graphs of the dependence of displacements on a radial variable at different time intervals, which allows us to better understand the reaction of a viscoelastic shell under the influence of a pulsed load. The results of the study can be useful in the development of structures subject to significant short-term loads (pulse effects), such as high-pressure tanks, pipelines, reactors, etc.
Оценка эффективности пассажирского судна с использованием методов имитационного моделирования
Authors: Новосельцев Игорь Александрович , Китаев Максим Владимирович
Published: December 2024

Предлагаемое исследование направлено на разработку методов совершенствования работы пассажирского флота в современных условиях. В статье представлены алгоритм и блок-схема имитационной модели, предназначенной для численного моделирования основных функциональных процессов, возникающих при осуществлении морских пассажирских перевозок на островные направления г. Владивостока. Приведены результаты моделирования и оценки экономической эффективности работы катамарана «Москва» как при реальном (действующем) годовом распределении пассажиропотока, так и при работе судна по утверждённому расписанию при различной степени загрузки и стоимости билета. В результате исследования установлено, что существующая система морских пассажирских перевозок не является экономически эффективной и требует изменений для приведения в соответствие с современными реалиями.

At present research we describe a method oriented to assessment and improvement the operation efficiency of marine passenger vessels in real conditions. In this paper the algorithm and block diagram of a simulation model oriented to numerical simulation of passenger transportation process in Vladivostok city are presented. The results of numerical modeling and economic efficiency assessment of a passenger catamaran “Moskva” are presented as for real annual passenger traffic distribution as for schedule operate conditions with different values of passenger loads and ticket prices. As a result of the study, it was found that the existing system of maritime passenger transportation is not effective and requires changes to bring it in line with modern realities.
Влияние параметров гибридных газовых подшипников судовых турбогенераторов на изменение критических частот вращающегося в них ротора
Authors: Нитяговский Андрей Валерьевич , Грибиниченко Матвей Валерьевич , Лапин Юрий Алексеевич , Ханнанов Андрей Мусавирович
Published: December 2024

В статье рассмотрено численное исследование критических частот системы «ротор – газовые гибридные подшипники» при изменении газодинамических параметров подшипников. Исследовалось изменение критической частоты системы при варьировании относительной протяжённости клиновидного участка, количества клиновидно-равномерных участков, относительной максимальной глубины клиновидных участков и числа сжимаемости. Приведены результаты исследования в виде графических зависимостей. На основе полученных результатов составлены рекомендации по изменению критических частот системы «ротор – гибридные газовые подшипники» при малом изменении несущей способности подшипников. Полученные результаты позволяют повысить точность расчётов критических частот турбомеханизмов на газовых гибридных подшипниках и повысить их эксплуатационную надёжность.

The article considers a numerical study of the “rotor – gas hybrid bearings” system critical frequencies when changing the bearings gas dynamic parameter. The change in the system critical frequency the was studied when varying the wedge-shaped section relative length, the wedge-shaped uniform sections number, the wedge-shaped sections relative maximum depth and the compressibility number. The study results are presented in the graphical dependencies form. Based on the results obtained, recommendations have been made for changing the critical frequencies of the “rotor – hybrid gas bearings” system with a small change in bearing load capacity. The results obtained make it possible to increase the critical frequencies calculations accuracy of turbomachinery on gas hybrid bearings and increase their operational reliability.
Исследование контактных напряжений в узле опирания стальной балки с учётом величины заглубления в бетонную стену
Authors: Долгачев Михаил Владимирович , Попов Александр Николаевич
Published: December 2024

В работе рассматривается опирание двутавровой балки на бетонную стену. В модели производится учёт одностороннего взаимодействия балки и бетонной стены, который ведёт к перераспределению усилий взаимодействия и, соответственно, максимальных напряжений, возникающих в бетоне в области контакта. Рассчитываются варианты с разной величиной заглубления балки в стену. Показаны распределения усилий взаимодействия в области контакта стены с балкой при одностороннем и двухстороннем взаимодействии. По полученным результатам можно сделать вывод об уменьшении максимальных сжимающих напряжений в бетоне в области контакта в нелинейной постановке при определённой величине заглубления балки.

This paper examines the support of an I-beam on a concrete wall. The model takes into account the unilateral contact between the beam and the concrete wall, which leads to a redistribution of interaction forces and, consequently, the maximum stresses that occur in the concrete in the contact area. Different scenarios with varying beam embedment depths into the wall are calculated. The distributions of interaction forces in the contact area between the wall and the beam under one-sided and two-sided interaction are presented. Based on the obtained results, it can be concluded that the maximum compressive stresses in the concrete in the contact area are reduced in the nonlinear formulation with a certain beam embedment depth.
Epidemiological peculiarities and analysis of the incidence time series of airborne viral infections in Ukraine during 2010-2020
Authors: Malysh Nina , Podavalenko Alla , Zadorozhna Victoriya , Biryukova Svitlana
Published: December 2024

Background: Illnesses with the aerosol mode of transmission dominate in the domain of infectious diseases. Influenced by natural, social, and biological factors, epidemiological characteristics of infectious diseases change. The present study aims at determining the peculiar modern features of the epidemiological situation regarding viral infections with the aerosol transmission in Ukraine.
Methods: Epidemiological and statistical research methods were applied. Statistical processing was conducted using standard methods of variation and correlation statistics.
Results: Influenza incidence ranged from 31.14-184.45 per 100,000 people. Other acute respiratory viral infections went from 13,685.24 to 18,382.5. The epidemic process of measles was characterized by increasing incidence in 2018 and 2019. In Ukraine, a tendency to reduce rubella and mumps (р < 0.05) was found. Median coverage of measles, mumps, rubella vaccine (MMR-1) vaccine was 64.9%, of MMR-2 vaccine-71.2%. The positive effect of immunization on the incidence of mumps and rubella has been established.
Conclusion: The study found wide prevalence of diseases with the aerosol transmission in Ukraine, variety of their clinical forms causes difficulties in combating them. The administration of two doses of the measles vaccine does not protect against this disease. The demographic situation in Ukraine may indirectly influence the intensity of the epidemic situation of viral infections with the aerosol transmission.
Awareness and utilization of complementary and alternative medicine for vitiligo treatment among the general population in Saudi Arabia: a cross sectional study
Authors: Albash Latefah , Alojail Heba , Alhababi Yasmeen , Almutawa Khalid , Alkishi Basel , Almumtin Reema , Aldhneen Mohammed , Aldhneen Ali , Alhumam Aminah , Albader Muhannad
Published: December 2024

Objective: This study aimed to explore the awareness and utilization of complementary and alternative medicine (CAM) for vitiligo treatment among the general population in the Eastern Province of Saudi Arabia.
Methods: A cross-sectional survey was conducted in the Eastern Province of Saudi Arabia. Participants completed an online questionnaire that assessed demographics, awareness of vitiligo and CAM, usage of CAM, and perceptions regarding CAM therapies.
Results: Among the 407 participants, 96.6% had heard of vitiligo, and 37.2% were aware of CAM therapies. While 57.5% believed CAM could be used for vitiligo, only 18.7% trusted its effectiveness. CAM usage for any health condition was reported by 42%, with herbal medicine being the most common (81.8%). The main barriers to CAM use were fear of side effects (45.9%) and lack of awareness (40%). Males perceived more risks associated with CAM (56%) as compared to females (43%).
Conclusions: This study highlighted a considerable awareness of vitiligo among the population but a limited awareness and use of CAM therapies for its treatment. While many believed CAM could be beneficial, the majority remained uncertain of its effectiveness, underscoring the need for further research and public education on CAM therapies for vitiligo.
Prevalence and knowledge regarding needle stick injuries among medical students at Taif University; a cross-sectional study
Authors: Al-Sawat Abdullah , Almutairi Turki , Almalki Abdulrahman , Alzahrani Abdulrahman , Althobaiti Abdulrahman , Alotaibi Abdullah , Alghamdi Mohammed , Alshehri Waleed
Published: December 2024

Objective: This study aimed to estimate the prevalence of needle stick injuries (NSIs) among medical students at Taif University in Saudi Arabia and assess their knowledge of NSI.
Methods: A cross-sectional study was conducted between 4 September 2024 and 12 October 2024 among medical students at Taif University in Saudi Arabia, using a self-administered online questionnaire designed after conducting a pilot study.
Results: A total of 278 medical students were enrolled in the study; the majority were males (59.4%), in their sixth academic year (24.5%), and specialized in medicine and surgery fields (55.8%). The results showed that half (50.4%) of the participating medical students had good knowledge about NSI, and the minority (11.9%) had an NSI incident. Additionally, gender and academic year were significantly associated with higher knowledge levels.
Conclusion: The study showed that half of the participating medical students at Taif University had good knowledge and a low incidence rate of NSI. However, more than half did not report their incidence. Otherwise, female gender and older academic years contributed to higher knowledge levels.
The association of recurrent abdominal pain of unknown etiology with psychiatric symptoms in the emergency department
Authors: Alanazi Mazi , Bakheet Zeina , Alramadhan Sara , Thamer Maryam , Alsultan Leyan , Aljaroudi Hussain , Madkhali Sultan , Hader Fahad , Alshihri Mohammed , Mohammed Ibrahim
Published: December 2024

The study's primary objective was to assess the relationship between frequent ER visits for stomach discomfort and depression symptoms. The preferred reporting items for systematic reviews and meta-analyses statements were followed in the conduct of this study. Studies should assess the available data about the suitability of screening adult patients with recurrent stomach pain in the emergency department (ED) for anxiety or depression to be evaluated for inclusion in the systematic review. A thorough search of the PubMed and Cochrane databases was done. Focuses search results on articles released between the years 2015 and 2024. In this review, five original papers were incorporated. The included research was carried out in EDs. Depression was present in between 10% and 47.3% of people. When considering the possibility that screening alone might not be sufficient for an ED-based intervention, it is crucial to keep in mind that lack of evidence does not imply absence and to remain open to the possibility that screening in this population might eventually show demonstrable advantages. Physicians might decide to use active screening to improve their ability to identify patients with recurrent abdominal pain, who were likely to have a high risk of depression and anxiety while acknowledging the limits of testing and the uncertainty of their influence on future findings.
Degloving Injury of the Thigh: A Case Report
Authors: Alsomali Fatmah , Khojahm Imad , Alamoudi Uthman
Published: December 2024

Background: Morel-Lavallee lesions (MLLs), also known as degloving injuries, are uncommon traumatic soft tissue injuries resulting from the separation of the superficial fascia from the deep fascia, typically due to high-energy trauma or shear forces. This separation leads to fluid accumulation and disruption of skin vascularity, placing the overlying skin at risk for necrosis and infection. MLLs can mimic other soft tissue injuries, such as hematomas, and are often associated with delayed diagnosis and treatment.
Case Presentation: A 46-year-old man presented with left thigh swelling persisting for three weeks following a motorcycle crash. Initial imaging with X-rays revealed no fractures, and point-of-care ultrasound identified a large encapsulated fluid collection consistent with MLL. Subsequent computed tomography angiography ruled out vascular injury and confirmed a subcutaneous fluid collection measuring 10.6 cm × 32.0 cm. Conservative management, including compression bandaging and prophylactic antibiotics, was initially recommended; however, after surgical review, ultrasound-guided drainage was performed to mitigate the risk of skin necrosis. The patient recovered uneventfully and was discharged 48 hours after the procedure.
Conclusion: This case highlights the importance of maintaining a high index of suspicion for MLLs in patients with post-traumatic swelling, even in the absence of fractures or significant injuries. Accurate diagnosis and timely intervention are essential to reduce the risk of complications. Point-of-care ultrasound and computed tomography are valuable diagnostic tools in emergency settings, particularly for patients with contraindications to contrast agents. Future guidelines should emphasize clinical vigilance and the role of advanced imaging in managing MLLs effectively.