bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of a sample exchange system for irradiations in the BH-3 channel of the IEA-R1 reactor at IPEN
Authors: De Paula Marcio Luis , Moralles Maurício , Genezini Frederico Antônio , Siqueira Paulo de Tarso Dalledone , Junior Iberê Souza Ribeiro , Júnior Iremar Alves da Silva
Published: July 2024

This work was developed with the aim of improving the current sample exchange system of the BH-3 irradiation channel of the IEA-R1 reactor at IPEN. The instrument's operating concept will provide a better use of the irradiation space as well as greater safety and confidence to the operator. The development of the system involved 3D modeling, sizing, construction and non-destructive testing of the various parts, and analysis of neutron-induced activation of the materials most exposed to the beam. A programmable logic controller (PLC) was implemented for the system’s control inside a dedicated electrical panel that was built with materials compatible with the location. The system was designed to support samples weighing up to 15 kg. Bench tests were carried out and showed that the system performs the necessary functions to accurately position samples in three locations: outside the biological shield, at the irradiation channel and at the decay waiting station. The implementation of this instrument will contribute to the application of the ALARA principle in the operator activities at the BH-3 irradiation channel.
ВПЛИВ ЕЛЕКТРОННО-КАТАЛІЗУ НА ВИКИДИ В НАВКОЛИШНЄ СЕРЕДОВИЩЕ ПІД ЧАС СПАЛЮВАННЯ ТВЕРДОГО ПАЛИВА
Authors: Вязовик Віталій М.
Published: July 2024

У складі викидів у навколишнє середовище в процесі спалювання твердого палива найбільша частка припадає на оксиди нітрогену, карбону та різноманітні шлаки. Зараз виділяють три основних джерела утворення оксидів азоту: «термічні», «швидкі» і «паливні». Кожне з джерел утворення оксидів азоту має свій механізм утворення. Оксид карбону (ІІ) утворюється в умовах неповного окиснення вуглецю палива наряду з альдегідами, органічними кислотами і іншими вуглеводнями. Одним із варіантів зменшення викидів в атмосферне повітря і підвищення ступеню вигоряння твердого палива є використання електронно-каталізу, суть якого полягає в інтенсифікації первинних ендотермічних стадій реакції горіння твердого палива, які базуються на використанні спрямованої дії штучно створеної низькотемпературної плазми з упорядкованим рухом «повільних» електронів. Як джерело «повільних» електронів використовували діелектричний бар’єрний розряд. За електронно-каталітичного спалювання досягнуто зменшення концентрації нітроген (ІІ) оксиду досягає майже 49 %, а карбон (ІІ) оксиду, за тієї ж напруги, майже 33 %. Ступінь вигоряння палива збільшується на 30 %. Зменшення утворення нітроген (ІІ) оксиду можна пояснити тим, що використання електрокаталізу пригнічує утворення «термічних» та «паливних» оксидів азоту за рахунок фіксації атомарного кисню. Пригнічення утворення швидких молекул нітроген (ІІ) оксиду відбувається за рахунок збільшення теплового ефекту процесу, що протікає. Карбон (II) оксид також, завдяки кращій дифузії кисню і потоку «повільних» електронів, доокиснюються до карбон (IV) оксиду та відбувається збільшення кількості радикалів НО•.
ОТРИМАННЯ ТА ВЛАСТИВОСТІ КОБАЛЬТВМІСНИХ ІНГІБІТОРІВ НІТРИФІКАЦІЇ
Authors: Малоок Максим В. , Матросов Олександр С. , Власенко Катерна М. , Кузнецова Ольга В.
Published: July 2024

Диціандиамід (DCD) і 4-аміно-1,2,4-триазол (АТС) – інгібітори нітрифікації (NIs), які широко використовуються в сільському господарстві. Практично немає досліджень, що стосувалися б їх комбінації у складі комплексу з «біометалом», яка, на наш погляд, матиме більшу ефективність. Метою цієї роботи є синтез нових кобальтвмісних комплексних сполук, визначення їх структури, складу та біологічної активності. Синтезовано чотири речовини за різного співвідношення лігандів (ATC та DCD). Встановлена їх розчинність у воді, суміші КАС-28 : вода та товарному КАС-28. Проведене дослідження термічної поведінки із встановленням найбільш імовірного типу комплексу. Методом інфрачервоної спектроскопії доведена 1,2-координація АТС через атоми N1 та N2 з атомом кобальту. Приєднання DCD здійснюється через групу C≡N. Встановлений вміст Co(II) у речовинах. У лабораторних умовах досліджена динаміка зміни кількості іонів NH4+ та NO3– та проведений розрахунок ступеня пригнічення нітрифікації.
ВИЗНАЧЕННЯ ЗАКОНОМІРНОСТЕЙ ТЕРМОХІМІЧНОЇ ДЕСТРУКЦІЇ БЕТОНУ ПІД ВПЛИВОМ ВИСОКИХ ТЕМПЕРАТУР
Authors: Шкромада Оксана І. , Волков Дмитро Г. , Івченко Вікторія Д. , Циганенеко Людмила А. , Циганенко Геннадій М. , Чіванов Вадим Д. , Юрченко Оксана В. , Піхтірьова Аліна В. , Швець Ольга Г.
Published: July 2024

У дослідженні вирішували проблему дослідження механізму руйнування бетону під впливом високих температур внаслідок пожежі. Досліджені руйнування бетонної підлоги під впливом високих температур, що виникла внаслідок пожежі від влучання снаряду біля місця зберігання силосу. Використання методу TPD-MS показало, що СО виділяється зі зразка, розташованого на 1.5 м від епіцентру з інтенсивністю 0.016 за температури 100  °С; з контрольного зразка – з інтенсивністю 0.01 (t = 583 °С); зі разка на відстані до 2 м – з інтенсивністю 0.006. Контрольний зразок бетону за нагрівання до t = 583 °С виділяв СО2 з інтенсивністю 0.16; зразок, отриманий на відстані до 2 м, – інтенсивністю 0.1 (t = 537 °С); на відстані від 0.5 м до 2 м від епіцентру пожежі виділення СО2 було мінімальним, з інтенсивністю 0.04 (t = 537 °С). Вміст карбону (СО, СО2) в бетоні зменшується з наближенням до епіцентру пожежі. Найбільшу інтенсивність випарування води – 0.8 (100 °С) – спостерігали із зразка бетону у радіусі до 1.5 м від епіцентру. Сірку виділяли у незначній кількості за 1000 °С в усіх зразках бетону. Сполуки SO2 та SO виділялись зі зразка на відстані 1.5 від епіцентру пожежі від вибуху. Особливістю експерименту є дослідження термомеханічних та термохімічних змін в бетоні під впливом високих температур. Проведене дослідження відрізняється застосуванням методів скануючої електронної мікроскопії та TPD MS для дослідження структурних та хімічних змін в бетоні. Результати експерименту можна застосовувати для визначення ступеню руйнування бетону для відновлення будівлі.
УДОСКОНАЛЕННЯ ТЕРМОДИНАМІЧНОГО ЦИКЛУ ПАРОТУРБІННИХ УСТАНОВОК ТЕПЛОВИХ ЕЛЕКТРОСТАНЦІЙ
Authors: Лавренченко Георгій К. , Слинько Олексій Г. , Козловський Сергій В. , Бойчук Артем С.
Published: July 2024

У наш час виробництво електроенергії за рахунок теплоти згоряння палива здійснюється головним чином за допомогою паротурбінних установок, які працюють за термодинамічним циклом Ренкіна. В традиційному циклі Ренкіна пароутворення і перегрів пари здійснюється в ізобарному процесі, який програє ізохорному процесу тому, що частина теплоти, яка підводиться ізобарно, витрачається на передчасне розширення робочого тіла поза турбіною. Пропонується вдосконалити термодинамічний цикл Ренкіна,  залишивши ізобарний процес утворення насиченої пари, а котловий і проміжні перегріви пари здійснювати в ізохорному процесі. В якості базового термодинамічного циклу для порівняння прийнято цикл суднової паротурбінної установки типу MST-14 потужністю 16200 кВт. Порівняння показників ефективності запропонованого термодинамічного циклу і циклу базової установки вказує на суттєві переваги запропонованого циклу, який дозволяє збільшити потужність установки до 29000 кВт за інших рівних умов. Вдосконалення циклу Ренкіна, що пропонується, ускладнить конструкцію паротурбінної установки і збільшить собівартість їх виготовлення, але це витрати будуть компенсовані зменшенням витрати палива і викидів карбон (IV) оксиду.
Kebersyukuran dan Kebahagiaan Mahasiswa Psikologi Muslim Pasca Pandemi
Authors: Anabella Aulia Intan
Published: July 2024

Penelitian ini bertujuan untuk mengukur pengaruh antara kebersyukuran terhadap kebahagiaan mahasiswa Muslim di Fakultas Psikologi UIN Bandung pasca pandemi COVID-19. Metode penelitian yang digunakan adalah pendekatan kuantitatif dengan teknik sampling convenience sampling. Jumlah responden penelitian ini sebanyak 50 mahasiswa Muslim Fakultas Psikologi UIN Bandung yang berdomisili di Jawa Barat. Hasil penelitian menunjukan bahwa kebersyukuran mempengaruhi sebanyak 24.4% terhadap kebahagiaan mahasiswa Muslim pasca pandemi COVID-19. Nilai konsistensi variabel kebahagiaan sebesar 29.412, koefisien regresi variabel syukur sebesar .646, hal ini menunjukan bahwa setiap penambahan 1% nilai syukur, maka nilai kebahagiaan bertambah sebesar .646.
Silaturahmi dan Peningkatan Kesehatan Mental Mahasiswa Pascapandemi Dalam Perspektif Hadis
Authors: Pratiwi Rahmadani Bintang Fitri , Rohman Ujang , Ismail Shalahudin
Published: July 2024

Penelitian ini bertujuan untuk mengetahui hubungan silaturahmi dengan peningkatan kesehatan mental mahasiswa pascapandemi dan melihatnya dari perspektif hadis. Penelitian ini menggunakan metode kualitatif dengan wawancara terhadap dua orang subjek dengan kriteria mahasiswa yang memiliki pengalaman melaksanakan perkuliahan daring ketika pandemi, serta wawancara ahli dan literature review sebagai metode pengambilan data. Hasil penelitian menunjukkan bahwa pengalaman silaturahmi yang dilakukan oleh mahasiswa saat pandemi berhubungan dengan peningkatan kesehatan mental mahasiswa pascapandemi. Hal ini pun terbukti dan tervalidasi dari perspektif hadis.
„Nowy Dziennik” a polskie dążenia do Sojuszu Północnoatlantyckiego (1990–1999)
Authors: Bonusiak Andrzej
Published: July 2024

Prezentowany artykuł ma za zadanie przedstawić, w jaki sposób zmieniało się podejście „Nowego Dziennika” do problematyki poszerzenia NATO o państwa Europy Środkowo-Wschodniej. W tym celu przeprowadzona została analiza zawartości tematycznej czasopisma z lat 1990–1999. Umożliwiło to ustalenie, jakie czynniki warunkowały przeobrażenia w sposobie prezentowania przez dziennik omawianych treści. Stwierdzono, że wyraźnie wyodrębnić można kilka okresów narracyjnych – pierwszy przypadający na okres rozpadania się systemu państw ludowo-demokratycznych; kolejny, w którym nowo powstałe władze starały się wypracowywać nowe koncepcje bezpieczeństwa międzynarodowego; trzeci – kiedy jasne stało się, że pomimo oczekiwań Rosja podąży własną drogą, co spowodowało, że ugruntowaniu uległo przekonanie o konieczności włączenia Polski i państw Europy Środkowo-Wschodniej do NATO. Wreszcie ostatni, w którym walczono o ratyfikację podjętych decyzji przez poszczególne rządy sojusznicze. Na podstawie przedstawionej analizy stwierdzono, że omawiane czasopismo odegrało znaczną rolę w popularyzowaniu tej idei i lobbowaniu za nią w środowisku polonijnym w USA, a co za tym idzie – również amerykańskim.
Prawne i organizacyjne aspekty przeciwdziałania zagrożeniom dla infrastruktury krytycznej UE po 24 lutego 2022 roku
Authors: Skrzyński Tomasz
Published: July 2024

Z uwagi na znaczenie infrastruktury krytycznej troska o jej bezpieczeństwo zajmuje ważne miejsce w polityce UE. Obecna konfrontacja między Zachodem a Rosją pociągnęła za sobą na terenie UE znaczne zaostrzenie przepisów i wysokie nakłady
zwiększające odporność IK w zakresie bezpieczeństwa informacyjnego. Mimo starań organizacyjnych i prawnych, w perspektywie średnioterminowej obecna sytuacja gospodarcza znacząco utrudnia utrzymanie wysokiego poziomu finansowania różnych aspektów ochrony IK w państwach członkowskich UE. Innym czynnikiem komplikującym efektywność działań w skali UE jest różny stopień determinacji władz państw w zakresie egzekwowania przepisów i innych działań w sferze ochrony IK. Jest m.in. związany z oceną przez władze danego państwa stopnia zagrożenia jakie stwarza polityka Rosji i Chin oraz różnym stopniem zagrożenia IK poszczególnych państw członkowskich atakiem ze strony Rosji. Wyzwanie stanowi także zróżnicowanie poziomu sprawności aparatu państwowego wewnątrz UE.
O Acervo digital de obras raras da Biblioteca Pública Benedito Leite: contribuições do acesso aberto para o alcance dos objetivos do desenvolvimento sustentável
Authors: Costa Maurício José Morais , Luce Bruno Fortes , Bernardino Maria Cleide Rodrigues
Published: July 2024

Resumo: Estudo que objetiva analisar a Biblioteca digital de obras raras da Biblioteca Pública Benedito Leite, seus recursos e contribuições para a disseminação das coleções especiais e cumprimento dos objetivos do desenvolvimento sustentável em São Luís - Maranhão, na ótica do Acesso aberto. Quanto à metodologia, trata-se de um estudo de natureza básica, de caráter descritivo e abordagem qualitativa, ao passo que se busca tanto caracterizar o Acervo de obras raras digitais quanto discutir as contribuições deste para o alcance das metas da Agenda 2030 e dos Objetivos do Desenvolvimento Sustentável no contexto local e estadual. Para tanto, adota-se como procedimento técnico a pesquisa bibliográfica, pesquisa documental, pesquisa de campo e a análise sistemática do portal do Acervo de obras raras digitais da Biblioteca Pública Benedito Leite. A partir dos resultados, pontua-se que, em face da atuação da Biblioteca Pública Benedito Leite e da iniciativa de colocar em acesso aberto seu acervo digital de materiais especiais, reforça-se o compromisso da instituição, tanto com as missões advogadas pela International Federation of Library Associations and Institutions quanto com o Movimento de Acesso aberto e, sobretudo, com as metas da Agenda 2030, à medida que favorece o acesso universalizado a informações e, com isso, contribui de forma equitativa a transformação social em diferentes dimensões na sociedade. Isto é determinante para que as bibliotecas públicas se apropriarem da Agenda 2030, para que suas contribuições sejam efetivas para as distintas comunidades atendidas por esses aparelhos de mediação.
Proposta de estruturação organizacional de apoio à Ciência Aberta
Authors: Ribeiro Nivaldo Calixto , Oliveira Dalgiza Andrade
Published: July 2024

Resumo: A Ciência Aberta é um movimento complexo e ainda não é possível estabelecer exatamente todos os seus limites, nem afirmar categoricamente todas as suas variações. Objetivo: orientados pelos resultados obtidos em uma pesquisa documental e pela literatura revisitada, objetivou-se com este estudo apresentar uma proposta, que pode ser considerada como inédita, de uma unidade organizacional de assessoramento às instituições de pesquisa quanto à aplicação de recursos, políticas, diretrizes e estratégias de Ciência Aberta, em colaboração com a área de comunicação científica da instituição. Metodologia: Para elaboração da proposta foram observadas as políticas institucionais de informação de sete universidades federais, as páginas de serviços e práticas de Ciência Aberta em execução em suas jurisdições, aos seus sites oficiais e de iniciativas consideradas inovadoras. Resultados: elaborou-se um organograma com possível estrutura organizacional de uma Agência de Ciência Aberta, com uma listagem de finalidades, competências e responsabilidades, bem como dos seus possíveis setores. Conclusões: dentificou-se a importância de uma unidade organizacional com essa finalidade, em função da pulverização da Ciência Aberta nos diversos setores das universidades analisadas, indicando a necessidade de unicidade de ações institucionais voltadas para abertura da Ciência.
FINNED AND UNFINNED THERMAL RESISTANCES OF A METAL FOAM UNDER JET IMPINGEMENT CONDITIONS
Authors: Yogi Ketan , Krishnan Shankar , Prabhu S. V.
Published: July 2024

Heat transfer in a flat plate with metal foam under impinging jet conditions is a complex combination of conduction (finned) and convection (unfinned) heat transfer. This study reports an analytical approach for the quantification of finned and unfinned heat transfer from a targeted plate with metal foam under impinging jet conditions. Along with the quantification of heat transfer modes, the interstitial heat transfer, the efficiency of metal foam as a fin, and thermal resistances are also quantified analytically. The analysis is carried out for rectangular slot jet and multiple air jet impingement conditions. The varying parameters are jet-to-plate spacing, metal foam thickness, and Reynolds number. The results suggest that for the slot jet case, the finned and unfinned heat transfer is around 70 and 30 percent of the total heat transfer independent of the foam thickness. However, for multiple jet case, finned and unfinned heat transfer is around 50 percent each except for 12 mm thickness. The interstitial heat transfer coefficient and fin efficiency increase with a decrease in the thickness of the foam. For both slot and multiple jet impingement cases, the thermal resistance to unfinned heat transfer is greater in comparison with the finned heat transfer. The presence of metal foam on the flat plate incenses the overall heat transfer by two times the smooth flat plate.
Surface characterization and antibacterial efficiency of TiO2 nanotubes on Ti15Mo alloy
Authors: Durdu Salih , Atasoy Selcuk , Aktas Sitki , Yalcin Emine , Cavusoglu Kultigin
Published: July 2024

The aim of this work is to investigate wettability and antibacterial properties of the well-ordered titanium dioxide (TiO2) nanotube (TNTs) surfaces on new-generation titanium–15 molybdenum (Ti15Mo) alloys for dental and orthopedic implant applications. Thus, the well-ordered TNTs and flat oxide surfaces were fabricated at various potentials such as 20, 40 and 60 V on Ti15Mo alloy by anodic oxidation (AO) technique. Uniform elemental distributions were obtained across all surfaces. In particular, the nanotube surfaces produced at 60 V showed hydrophilic behavior, whereas the flat and nanotube surfaces produced at 20 and 40 V were hydrophobic, respectively. The in vitro antibacterial activity of all surfaces against Escherichia coli (gram-negative) and Staphylococcus aureus (gram-positive) bacteria was investigated in detail. Compared with bare Ti15Mo alloys, the flat and TNTs surfaces showed antibacterial activity. Furthermore, the antibacterial efficiency of TNTs produced on titanium–15 molybdenum alloy improved with increasing AO potential values.
Revisão sistemática da temática dos jardins verticais em fachadas de edificações urbanas e perspectivas futuras
Authors: Matos Elisa Bomtempo , Rocha Bruno Massara , Alvarez Cristina Engel de
Published: July 2024

Jardins verticais podem ser utilizados como estratégia para aumentar a cobertura vegetal em ambientes urbanos, contribuindo para a melhoria da qualidade do ar e a redução de ilhas de calor. Na escala do edifício, jardins verticais são utilizados como estratégias para melhoria do desempenho térmico e economia de energia. De maneira geral, aumentam a qualidade de vida das pessoas e atuam como facilitadores do aumento da biodiversidade em área urbana. No entanto, a manutenção desses sistemas pode ser desafiadora, pois o caráter de verticalidade desses sistemas dificulta o acesso às plantas. Este artigo tem como objetivo revisar sistematicamente a literatura existente sobre os métodos e técnicas de manutenção em jardins verticais, considerando sua relação com a arquitetura, a fim de buscar por tipos de tecnologias utilizadas. Também objetiva identificar lacunas e perspectivas para futuras pesquisas. Como resultados, percebeu-se uma carência de trabalhos que abordam a implementação desses sistemas em situações reais de manutenção, especialmente no que diz respeito a instalações de tecnologias relacionadas à iluminação.
Soluções Baseadas na Natureza: Alternativa para a solução das inundações no bairro Água Branca, Piracicaba-SP
Authors: Pereira Murilo Garcia dos Santos , Terci Eliana Tadeu
Published: July 2024

O aumento da temperatura média da atmosfera terrestre tem causado uma maior ocorrência de eventos climáticos classificados como extremos. Um desses eventos são as fortes chuvas, cuja distribuição ao longo do tempo tem se tornado cada vez mais irregular e imprevisível, causando problemas como as inundações urbanas. Este trabalho tem como principais objetivos compreender de que forma esse problema afeta a cidade de Piracicaba-SP e também apresentar alternativas ao combate às inundações urbanas que possam ser implementadas em um local da cidade escolhido através de um levantamento de dados do Plano Diretor de Desenvolvimento de Piracicaba - Lei complementar n°405/2019. Foi escolhido um bairro que sofre com esse problema e que apresenta características favoráveis para a implantação de um projeto pioneiro de Soluções Baseadas na Natureza (SbN) que pode servir de base para uma transformação na maneira com que Piracicaba enfrenta as inundações, a fim de dar um passo importante rumo a uma cidade mais adaptada e inclusiva, melhor preparada para lidar com os desafios do século XXI.
Análise do Projeto de Colonização do Município de Guarantã do Norte – MT, Considerando as Áreas Verdes: Diretrizes Projetuais x Realidade Aplicada
Authors: Menegon Beatriz Crestina Balen , Carignani Gisele , Paula Diana Carolina Jesus de , Gulinelli Érica Lemos
Published: July 2024

A relevância das áreas verdes urbanas no planejamento de cidades ultrapassa a esfera estética, exercendo um impacto positivo tanto na saúde pública quanto no equilíbrio ambiental. Nesse contexto, este artigo tem como objetivo analisar a situação presente das áreas verdes no município de Guarantã do Norte - MT, a partir do projeto urbano inicial. Para isto foram realizadas pesquisa bibliográfica, documental, visitas presenciais e análise da legislação vigente. Foram observados aspectos históricos relacionados à colonização, cuja combinação com a falta de levantamentos prévios apropriados durante a concepção do projeto do município possibilitou o parcelamento inadequado de um córrego. Posteriormente, mudanças no âmbito político e administrativo resultaram na redução das áreas verdes originalmente planejadas. Durante a formulação do Plano Diretor, o município optou por seguir estritamente as diretrizes já estabelecidas pelas legislações existentes. Como resultados, percebe-se que desde as fases iniciais do planejamento urbano até o momento presente, as áreas verdes têm sido negligenciadas, acarretando consequências em termos sociais, econômicos e ambientais para todos os habitantes da região.
Espaço periférico do Portal da Lagoa na proposição do urbanismo sustentável em Campo Grande/MS
Authors: Costa Scarlet Camargo da , Bertuzzi Felipe Buller , Bourlegat Cleonice Alexandre Le , Bacarji Ana Claudia Marques , Casadei Juliana de Mendonça
Published: July 2024

A discussão acerca do planejamento urbano contemporâneo deve elucidar estratégias de desenvolvimento sustentável de modo a influenciar diretamente a qualidade de vida das pessoas. Este artigo apresenta as propostas de diretrizes urbanas para o espaço periférico do Portal da Lagoa, localizado em Campo Grande, Mato Grosso do Sul, Brasil. Ao adotar uma abordagem qualitativa exploratória e descritiva, o estudo baseia-se em fontes secundárias e primárias, incluindo documentos, bibliografias, estudos de caso e pesquisa de campo. A análise abrange a evolução histórica, o funcionamento atual e os desafios locais enfrentados pelo parcelamento. Os 24 participantes da pesquisa que responderam aos questionários eram moradores. Esse estudo destaca a importância do planejamento urbano participativo e sensível às necessidades da comunidade local, visando promover o desenvolvimento sustentável, a inclusão social e a melhoria da infraestrutura urbana. Ao entender as demandas e aspirações dos residentes, as diretrizes propostas visaram subsidiar políticas públicas eficazes para aprimorar a qualidade de vida e o ambiente urbano do espaço periférico do Portal da Lagoa e servir como exemplo para outros projetos urbanos semelhantes
Importância Ambiental do uso de PET-PCR em Materiais de Construção
Authors: Brandão Raul de Souza , Lima José Augusto Pedro , Alexandre Jonas
Published: July 2024

O artigo examina o impacto ambiental positivo do uso de PET-PCR (Polietileno Tereftalato Pós-Consumo Reciclado) em materiais de construção. Inicia-se com uma introdução que enfatiza a crescente demanda por soluções sustentáveis na construção civil, realçando o papel dos materiais reciclados, como o PET, como uma alternativa viável e ecologicamente amigável. Em seguida, são exploradas diversas aplicações do PET-PCR na construção civil, abrangendo desde blocos de concreto até revestimentos sustentáveis, ressaltando os benefícios técnicos e ambientais que esses materiais proporcionam. O texto discute aspectos importantes, como a redução do descarte de resíduos plásticos, a diminuição do consumo de energia na produção, a menor demanda por matérias-primas virgens e a promoção da economia circular, evidenciando a contribuição significativa do PET-PCR para a sustentabilidade ambiental e econômica da indústria da construção. Oferece uma análise abrangente e bem fundamentada sobre a relevância do PET-PCR na construção civil, buscando disseminar conhecimento e incentivar a adoção de práticas construtivas mais sustentáveis. Conclui-se ressaltando a importância do PET-PCR como uma alternativa ecoeficiente na construção civil, alinhada com os princípios do desenvolvimento sustentável, promovendo assim uma abordagem mais responsável e consciente para a construção do futuro.
Co-creating a Health Entrepreneurship Education for Sustainable Employment and Sector Transformation in Sub-Saharan Africa
Authors: Kimberly Crasta , Joseph Ferenbok , Princess Ruhama Acheampong , Joseph Owusu
Published: July 2024

The unemployment and underemployment of youth in sub-Saharan Africa is a significant socio-economic issue. This situation, coupled with high poverty rates and low health standards, threatens economic growth and social stability. The healthcare sector offers a potential solution through job creation and innovation, yet mismatched skills and a lack of high-quality education hinder progress. Health Entrepreneurship Education (HENT Ed) is crucial to address these challenges by equipping youth with the necessary skills to drive healthcare innovation and economic growth. The Mastercard Foundation’s “Young Africa Works” strategy aims to bridge this gap by facilitating 30 million jobs for youth by 2030, supported by educational curricula and entrepreneurial training. One way of achieving this goal is the MSc in Health Entrepreneurship at Kwame Nkrumah University of Science and Technology in Ghana, launched in January 2024. In collaboration with the University of Toronto, this program represents the first global co-created HENT Ed, combining entrepreneurship education with healthcare needs. Early feedback from students reveals the benefits of this innovative approach, indicating positive impacts on engagement and venture success. Continuous evaluation and refinement will ensure the program meets evolving needs, fostering a new generation of health entrepreneurs.
Automated concentration of viral particles in wastewater samples using Nanotrap Microbiome A Beads v1
Authors: McCunn Ashlie , Antkiewicz Dagmara , Roguet Adelaide
Published: July 2024

This method describes how to concentrate viral particles in water samples using magnetic beads (Nanotrap‱ Microbiome A Particles) to enable the subsequent quantification of microbial organisms in those samples. This method uses the KingFisherTM Apex automation system and may be used for wastewater, drinking water, surface and recreational waters.
Wastewater grab sample processing with PEG-8000 precipitation v1
Authors: Abraham Dilip
Published: July 2024

PEG (Polyethylene Glycol) is a chemically inert, nontoxic, water-soluble synthetic polymer and has been used in aqueous polymer two-phase systems that help concentrating and isolating viruses from a variety of environmental samples. PEG is known as a good inductor of attractive interactions that crystallize viruses in the interpolymer spaces between PEG molecules. So, the combination of PEG concentration and RNA extraction steps enable 900– 1500Xconcentration of wastewater samples and sufficiently eliminate most of the organicmatter, which could inhibit the subsequent qPCR assay.
Wastewater grab sample processing with Nanotrap® Microbiome A particles (40 ml) v1
Authors: Abraham Dilip
Published: July 2024

This protocol is used to carry out processing of wastewater using Nanotrap‱ Microbiome A Particles (Ceres Nanosciences). Nanotrap‱particles are affinity-capture magnetic hydrogel particles that have been shown to capture and concentrate microorganisms (like SARS-CoV-2) from wastewater prior to RNA or TNA extraction. The sample is mixed with the particles, incubated, and separated with a magnet. The supernatant is removed, the pellet is spiked with extraction controls, and subjected to lysis followed by extraction. This protocol has been adapted from the online protocol available from Ceres Nanosciences.
Consistência interna e verificação da estrutura fatorial em estudantes portugueses/as do ensino superior
Authors: Serrão Carla , Formiga Nilton
Published: July 2024

Na investigação empreendida junto de uma amostra de 408 estudantes do Ensino Superior recorreu-se à Escala de Estratégias de Conciliação da Vida Familiar e Profissional de para avaliar as variáveis
Conciliação através da Concessão e Conciliação através da Negociação. Observouse que os/as participantes do estudo tendem a concordar com a negociação como estratégia para a conciliação, contudo verificam-se diferenças estatisticamente significativas no que diz respeito às variáveis sexo e orientação política. Neste sentido, são os homens e as pessoas com orientação política de direita/centro direita que tendem a discordar menos da concessão como estratégia de conciliação entre vida profissional e familiar.
Terapia asistida con animales como apoyo en la reestructuración cognitiva
Authors: González Ramírez Mónica Teresa , Landero Hernández René
Published: July 2024

El objetivo de este trabajo es evaluar los cambios en los pensamientos negativos después de participar en un taller de manejo del estrés asistido con perros de terapia, como apoyo a la técnica de reestructuración cognitiva. Al taller asistieron 9 mujeres. La participación de los perros fue activa. Se evaluaron los pensamientos negativos con el Cuestionario de Pensamientos Automáticos (ATQ); los resultados indican una disminución significativa en los puntajes del ATQ. Se concluye que los perros de terapia pueden contribuir en el proceso de reestructuración cognitiva, cuando se diseñan actividades en las que la participación del perro potencia el trabajo de detectar y cuestionar pensamientos automáticos.
Taller de manejo de ansiedad para hablar en público. Integración del enfoque cognitivo-conductual y la terapia breve centrada en soluciones
Authors: Morales Rodríguez Daniel , González Ramírez Mónica Teresa , Molina Landaverde Oscar Daniel
Published: July 2024

El objetivo de la presente investigación fue evaluar los cambios en confianza, miedo, ansiedad y seguridad al hablar en público después de un taller grupal utilizando de forma integral los enfoques cognitivo-conductual y centrado en soluciones para el manejo de la ansiedad para hablar en público. Participaron siete estudiantes universitarios, el taller se llevó a cabo en cinco sesiones semanales. Los resultados de la intervención mostraron una mejora significativa en la confianza, miedo, seguridad y ansiedad al hablar en público. Se concluye que la intervención fue eficaz y es una alternativa en el tratamiento de la ansiedad para hablar en público.
Clinical polymorphism of myelitis in neurologic practice. Lecture with description of clinical cases
Authors: Kondratov A. A. , Kotov A. S.
Published: July 2024

Among rather rare but extremely interesting and important conditions, myelitis stands apart due to its complexity and diversity of clinical manifestations. In this article, in addition to the well-known data on this group of diseases, we present the results of the analysis of eight cases of myelitis, which may serve as a starting point for the development of more effective and streamlined strategies in diagnosis and treatment. It may also contribute to deeper understanding of difficult cases in neurological practice.
Association between Memory and Attention Performance among Preschoolers Playing Traditional and Digital Games (on the Example of «Dobble»)
Authors: Rubtsova O.V. , Tokarchuk Y.A. , Salomatova O.V. , Gavrilova E.V.
Published: July 2024

The article presents the results of the project «The Impact of Digital Activity on the Development of Cognitive Functions in Preschool Age». The study was conducted from February to May 2023 at the Center for Interdisciplinary Research of Contemporary Childhood at MSUPE, involving 76 children from preparatory groups of kindergartens in Moscow. The following methods were used: the «Learning 10 Words» Method (A.R. Luria), D. Weksler's Subtest (the «Coding Method»), 3.    «Test of Intertwined Lines» (A. Rey's Test Modification), and the «Mark the Signs» Method (Pieron-Ruser Test). According to the obtained data, the digital version of the game «Dobble» has the greatest effect on the development of the studied parameters of memory and attention in preschool children. The obtained empirical data are consistent with the results of similar studies and are of interest to psychologists, educators, and parents in planning and conducting educational and play activities.
Critical Thinking in the Context of Embodied Cognition: a Review of Psychological Research and its Pedagogical Potential
Authors: Golubinskaya A.V. , Viakhireva V.V.
Published: July 2024

The article presents an overview of current research on critical thinking based on the hypothesis of embodied cognition and representing the so-called non-Cartesian approach to thinking, in which the rational and the sensual do not act independently from each other, but as a closely related group of processes. Despite the fact that the topic of critical thinking in this research area is yet in the process of formation, the review is systematic and contains indications of two main directions, their theoretical guidelines and methodological guidelines. A comparison of the identified approaches makes it possible to identify the mechanisms that are key to any embodied version of the critical thinking model: an individual's sensitivity to his own explicit and implicit epistemic signals, or dispositional attentiveness, and emotional non-activity. It is shown that interdisciplinary transfer in this topic is problematic: knowledge produced in the psychological framework of embodied cognition research is inherently different from knowledge that allows improving the learning process of critical thinking. The results obtained open up prospects for further research and ways to reorganize pedagogical practice in the field of teaching critical thinking
REORGANIZATION BUSINESS MANAGEMENT MODEL FOR INCREASING THE COMPETITIVENESS OF REAL ESTATE MANAGEMENT COMPANIES IN LATVIA THROUGH MERGER AND ACQUISITION TRANSACTIONS
Authors: Zvirgzdina Rosita , Sakena Dace , Linina Iveta
Published: July 2024

Research background: Globalization, the impact of geopolitical conditions, the rapid rise of inflation, and the rapidly changing conditions intensifies competition between companies, which influence companies think about expanding their services. Economic survival forces companies to think about reorganizations through mergers and acquisitions. Companies consider mergers and acquisitions as a strategy for product market expansion to improve competitive advantage, however, achieving the expected success through mergers and acquisitions poses serious challenges to company management and does not provide the expected value from these transactions. Acquisitions and mergers without reorganization business management model may not deliver the expected benefits.; Purpose of the article: to present a reorganisation business model to enable Latvian Real estate service companies to implement the product market expansion strategy through acquisitions and mergers and reorganisation processes.
Methods: A monographic and descriptive method was used to analyse the theoretical aspects of company strategies, secondary data analysis and expert interview were used to describe the situation of real estate management service industry, but quantitative research method such as analysing of statistical data of the apartment maintenance companies, in connection with the comparative, analytical, deductive, logical approach method was used in this research.
Findings & Value added: Real estate management companies in Latvia face the conditions created due to the influence of globalization and geopolitical conditions - market limitations to expand. Companies, their managers have not enough knowledge of reorganization process, and many other factors about properly conducted reorganization transactions, incl. about acquisitions, due diligence, transaction progress, therefore companies need a reorganization business management model suitable for reorganization transactions.
ANTIFUNGAL ACTIVITY OF MEDICINAL HERBS AQUEOUS EXTRACTS: COMMON WORMWOOD (ARTEMISIA ABSINTHIUM L.), GREATER BURDOCK (ARCTIUM LAPPA L.), COMMON THYME (THYMUS VULGARIS L.) AND POT MARIGOLD (CALENDULA OFFICINALIS L.) ON YEAST SACCHAROMYCES CEREVISIAE
Authors: Umbrasko Inta , Batjuka Anna , Petjukevics Aleksandrs , Skute Natalja
Published: July 2024

One of the modern approaches to identifying alternative broad-spectrum against microorganisms that cause human diseases raises an urgent need to search for bioactive compounds with antifungal activity from medicinal plants. One of the main problems of antibiotic therapy for diseases is the development of resistance to opportunistic diseases of relatively low virulence, which are caused by yeast. In this regard, the search for natural medicinal herbs is relevant. The present study was undertaken to evaluate the effectiveness of the antifungal activity of different medicinal plant aqueous extracts: greater burdock (Arctium lappa L.), common wormwood (Artemisia absinthium L.), common thyme (Thymus vulgaris L.), and pot marigold (Calendula officinalis L.) on the growth of yeast: Saccharomyces cerevisiae. Aqueous extracts were prepared from leaves, stems, inflorescences, and roots of ready-made medicinal mix, and their antifungal activity against yeast was tested using the Kirby-Bauer standard disk diffusion method. Disks were soaked in aqueous extracts of medicinal plants and were placed on an agar medium previously inoculated with yeast Saccharomyces cerevisiae as a test object. The prepared agar plates were cultured in the dark at 30°C for 3-5 days. The results obtained showed that the aqueous extracts of medicinal plants demonstrated different antifungal activity concerning test culture, the level of which variable by the plant species. The aquatic extract of medicinal plants: common wormwood (Artemisia absinthium L.), and pot marigold (Calendula officinalis L.) had the most noticeable antifungal activity. The results obtained during the preliminary suggest that the studied aqueous extracts of medicinal plants of natural origin can be used as antifungal agents with a specific mechanism of action.
NETWORK ATTACK RECOGNITION USING FUZZY LOGIC
Authors: Borisova Angela
Published: July 2024

The following research paper presents a fuzzy logic system model related to classifying network traffic as malicious or normal. The relevance of the problem stems from the increasingly widespread worldwide problem, namely cyber threats against various companies, organizations, individuals, etc. and at the same time the use of artificial intelligence systems as a means of detecting and preventing various types of cybercrime. To accomplish the task, several basic work methods are followed: first, the development goal is defined - building a fuzzy logic system that supports and automates decision-making about the type of network traffic (malicious or normal traffic), second, appropriate software is selected to perform the task, in this case MATLAB and specifically the Fuzzy Logic Designer toolbox, third, the actual system is built consisting of pre-obtained network traffic inputs that are taken from a pre-collected and compiled .pcap file (the data in it are captured and modified to contain only some network information fields from the set of packets necessary for the experiment to run successfully), the system itself consists of nine input linguistic variables, one output linguistic variable and a knowledge base (the core of the project, namely if-then rules). The studied system is compared with other similar fuzzy output systems of other researchers. Based on this, it is concluded that the approach proposed in the present work to categorize network traffic, based on pre-selected network information fields, in collaboration with other means of cyber protection gives very good results in the context of cyber security. The present project proposes a fuzzy inference system to classify network packet types and detect TCP-SYN attack. The fully built fuzzy source system provides a different perspective to solve the present problem by defining the abstract solution and facilitating the work of specialized personnel charged with such tasks by automating the process of providing an adequate solution regarding the legitimacy of network traffic.
MANAGEMENT APPROACHES AND APPLICATION AREAS OF INFORMATION SECURITY IN ORGANIZATIONS
Authors: Gaidarski Ivan , Chehlarova Neda
Published: July 2024

In organizations, two types of communication can be distinguished, predetermining approaches to Information Security (IS): communication based on equality - "Network communication" (Networks from/in organizations) and "Hierarchical organizational communication". A primary task of IS in an organization is to protect sensitive data in both types of communication. The IS approach must be tailored and cover all options – a holistic approach. Existing IS management approaches can be divided into two large groups: Information security approaches in Network Communications and data security approaches in Hierarchical Organizational Communication. Approaches to managing IS in network communications include Firewalls, Intrusion Detection Systems (IDS), Intrusion Prevention Systems (IPS), Anti-Virus, Anti Malware, Endpoint Protection, Perimeter Security and Cyber-threat intelligence systems. IS management approaches in Hierarchical Communication include Data Classification and Data Leakage Prevention (DLP) systems. In the article are examined the areas of application of the different approaches to information security in an organization - External network, Network Perimeter, Internal network, Computer equipment, Applications and Data.
ANALYSIS OF GOOD PRACTICES IN STEM EDUCATION IN THE SCHOOLS OF THE VELIKO TARNOVO REGION IN THE SECOND YEAR OF THE NATIONAL PROGRAM
Authors: Karaivanova- Dolchinkova Bonka
Published: July 2024

In the current National Program for the construction of STEM centres in the schools of Bulgaria, the basic parameters for the requirements for the construction of modern teaching laboratories, offices, etc. are laid down. 16 schools from the Veliko Tarnovo region have been approved for the various stages of the program and for the second year have successfully implemented training in the built STEM centres. The centres built in some of the schools, their orientation and their use in the education of the students are shown. In these schools, the newly built centres are already used by the teachers of the relevant subjects for training in modern conditions with the aim of increasing the success rate of the students and practical application of the acquired knowledge. Construction of such centres in other schools is also planned for the next academic year
ALGORITHM FOR IMPLEMENTING QUEST TECHNOLOGIES IN RESEARCH WORK WITH PRESCHOOL AND PRIMARY SCHOOL CHILDREN
Authors: Vasiutina Tetiana , Ishchenko Lіudmуla , Kit Halyna , Bondar Yulia , Khilya Anna
Published: July 2024

The origin of the definition "quest" and the use of quest technologies in traditional education have been well theoretically analysed and substantiated. In particular, a quest could be a type of collective creative work, scientific/educational competitions or excursions in the traditional form of organising educational activities. However, with the transition to digital education, the implementation of quest technology has changed. It continues to be seen as a motivational tool for learning, a creative form of work in the educational programme. But, according to our observations, this type of work is declining in the online format. We will discuss the reasons for this and options for replacing quest technologies in this description. It is worth noting that in order to achieve the goal of our study, we turned to the basic requirements for organising a Web Quest, recommendations for its design, convenience according to the age category of children, clarity of instructions, etc. The next step was to compare online education technologies that had similar characteristics to the quest (computer games, educational applications and platforms, RPGs, video quests, VR audiences, etc.) This allowed us to draw a conclusion about their common roots and concepts, as well as to understand the reasons for the decline in scientific interest in the topic of the quest itself. After analysing the available open access publications, we concluded that this is not enough to understand the reasons for the decline in interest in this form of online work. After all, street quests are still popular. That is why we interviewed students specialising in preschool and primary education who had the opportunity to create Web Quests and participated in them. The feedback from future specialists on the implementation of quest technology in online and offline formats directed us to describe the reasons for refusing this technology in the online format of the educational process and allowed us to confirm the list of possible substitutions for quests for the research activities of preschool and primary school students suggested above.
THERMAL AND STRUCTURAL PROPERTIES OF SUCCINITE REINFORCED PA6 NANOFIBERS
Authors: Lasenko Inga
Published: July 2024

Give This research article delves into the thermal stability of succinite -an organic polymer- when amalgamated within the structure of PA6 nanofibers, with a focus on assessing the consequent mechanical and structural performance of such composite nanofibers. The electrospinning method employed, involves the process of heating and high voltage to polymers, is known to inherently alter their thermal properties. The primary objective of this study is to examine the thermal stability of succinite within the PA6 nanofiber matrix and to evaluate the preservation of the composite material's mechanical and structural integrity, particularly under varying PA6 concentrations (16%, 20%, and 28%). Through thermal analysis techniques such as Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), and Infrared (IR) spectroscopy, it was observed that the succinite nano powder (ranging from 5-20 nm) exhibits minimal loss of volatile components, notably the NH amino group, upon heating to 150 ºC—a common solvent temperature during suspension preparation. This loss does not surpass 0.1% of the original volume, ensuring the predominance of critical components like succinite acid (C4H6O4) in the composite. Furthermore, PA6 nanofibers were fabricated with varying PA6 polymer percentages (16%, 20%, and 28%) and with or without the integration of succinite nano powder, to compare mechanical properties. It was noted that incorporating succinite into PA6 nanofibers (at 16% concentration) led to an increase in fibre diameter to 78±14 nm from the 60±17 nm diameter of pure PA6 fibres, alongside a notable decrease in elastic modulus by approximately 2.3 times. However, the ultimate tensile strength only marginally reduced from 295.2 MPa to 274.9 MPa, with a slight decrease in toughness from 168.3 to 162 MPa. Contrary to pure PA6 fibres, the strain-to-failure ratio for the composite nanofibers saw an approximate 7% increase. This study elucidates the subtle yet significant modifications in the mechanical and structural properties of polymer composites attributable to their thermal stability. These findings furnish vital insights for the application of such composite materials in diverse thermal management contexts, particularly when utilised as protective materials.