bluuebunny/crossref_metadata_2025 huggingface dataset:
Multiphysics Modeling for Combustion Instability in Paraffin-Fueled Hybrid Rocket Engines
Authors: Casalino Lorenzo , Ferrero Andrea , Folcarelli Lorenzo , Masseni Filippo , Muscará Luca , Pastrone Dario , Luisa Frezzotti Maria , Cretella Attilio , Carmine Pellegrini Rocco , Cavallini Enrico
Published: February 2024

The use of paraffin-based fuels is a promising approach to a low regression rate in hybrid rocket engines, and the capability to describe and predict combustion instability in the presence of liquefying fuels becomes an enabling step towards the application of hybrid rockets in a wide range of space transportation systems. In this work, a multiphysics model having this purpose is presented and discussed. The model is based on a network of submodels in which chamber gas dynamics is described by a quasi-1D Euler model for reacting flows while thermal diffusion in the grain is described by the 1D heat equation in the radial direction. An artificial neural network is introduced to reduce the computational cost required by the chemical submodel. A sensitivity analysis is performed to identify the key parameters, which have the largest influence on combustion instability and to evaluate the predictive capability of the model despite the uncertainty introduced with the necessary modeling simplifications. Results are presented considering two test cases with different oxidizers: hydrogen peroxide and gaseous oxygen. The procedure shows good agreement with the experimental results available in the literature.
Tomographic Reconstruction of Hypersonic Aircraft Flowfields in Large-Scale Wind Tunnel Experiments
Authors: Takahashi Hidemi , Oki Junichi , Hirotani Tomonari , Taguchi Hideyuki
Published: February 2024

Three-dimensional flowfield features around a hypersonic aircraft model were reconstructed using a computed tomography background-oriented schlieren technique. Datasets of projection images were acquired in hypersonic wind tunnel experiments conducted at the Japan Aerospace Exploration Agency’s [Formula: see text] hypersonic wind tunnel facility, by rotating the test model with an increment of 2° azimuth. A telecentric optical configuration was applied to the background-oriented schlieren measurement at the large-scale hypersonic wind tunnel facility. A basic tomographic reconstruction method, such as filtered backprojection, was used to reconstruct the projection datasets with some combination of denoising calculations. Results showed that the reconstructed flowfield was first noisy without denoising. With the denoising considerations proposed in this study, the flow physics, such as oblique shock waves emanating from the vehicle nose tip and engine lip, were clearly visualized. Therefore, the telecentric optical setup and denoising processes proposed in this study can successfully reconstruct a complex three-dimensional flowfield obtained at a large-scale wind tunnel facility. This setup and denoising process can also apply to other applications in large-scale wind tunnel experiments.
Learning along the Way
Authors: Cox Glenda , Willmers Michelle , Brown Robyn , Held Michael
Published: February 2024

The development of open educational resources (OER) plays a key role in addressing the challenge of access to affordable, appropriate, high-quality teaching and learning materials. This is particularly the case in health sciences in South Africa, where there is a strong imperative around local production of contextually appropriate resources that can be openly accessible within institutions and in practice. This case study details the creation and iterative review approaches undertaken by undergraduate medical students in a study module focused on creating chapters for an orthopaedics open textbook through the use of ChatGPT. It also explores the nuances of the lecturer’s process, particularly as relates to assessment, quality, and his ambitions to promote student voice through co-creation. The findings demonstrate that ChatGPT has the potential to be the game changer needed to help build OER production in the Global South, particularly in terms of the speeding up of the process. They also suggest that processes of this kind have a role to play in building students’ critical artificial intelligence (AI) digital literacy skills and in boosting their sense of agency. This work stands to make an important contribution in terms of profiling institutional cases where AI is being used in an innovative, responsible manner in the classroom. It also aims to make a unique Global South contribution to the rapidly emerging global discourse around the use of AI in teaching and learning, and the use of collaborative content development approaches to promote student voice and social justice in higher education.
Posterior reversible encephalopathy syndrome in immunocompromised children – A single-center study from South India
Authors: Gaddam Sudeep , Kodandapani Rajesh , Mani Nikhita , Jayaraman Dhaarani , Abirami B. Nikitha
Published: February 2024

This study describes the profile of children diagnosed with posterior reversible encephalopathy syndrome (PRES) in the pediatric hematology oncology unit and highlights the clinical features of PRES in immunosuppressed children. This retrospective study included 10 children diagnosed with PRES with a mean age of 6.8 years. Acute lymphoblastic leukemia was the most common primary diagnosis followed by post-hematopoietic stem cell transplant patients. Most cases of PRES occurred within one month of treatment initiation. Hypertension was noted in all at the time of diagnosis. Neuroimaging revealed bilateral lesions with parietal and occipital lobe involvement being the most common. All patients received corticosteroids as part of treatment for primary diagnosis. Controlling blood pressure was critical in managing PRES. Consideration of PRES as a clinical possibility in pediatric hematology oncology unit in children presenting with symptoms such as headache, seizures, and visual disturbances will aid in early diagnosis after ruling out other causes of these symptoms.
Analysis of food inflation convergence in NUTSII regions of Türkiye
Authors: İĞDELİ Arif
Published: February 2024

In this research, it is examined whether the increase in food inflation observed in Turkey in recent years due to global factors as well as the slowdown in food inflation convergence among regions. In this context, the research aims to analyze the food inflation convergence among NUTS II regions. Since it takes into account the effect of global shocks, tests that take structural break into account are used. In addition, first and second generation tests that do not take into account the structural break are also used and the all test findings are compared. The findings differ according to the consideration of horizontal cross-section dependence and structural break. In addition, the findings also vary according to the a priori determination of the structural break. According to the findings of the test taking into account the soft break, the existence of food inflation convergence among regions except TR83 region is found. The second generation test findings also support this result. In line with the findings, it is concluded that the increase in food inflation observed in Turkey in recent years is not due to the slowdown in food inflation convergence across regions.
СПЕКТРЫ ВНУТРЕННЕГО ТРЕНИЯ В СИСТЕМЕ ПОЛИВИНИЛОВЫЙ СПИРТ - СЕРЕБРО
Authors: Абатурова Н.А.
Published: February 2024

Были получены пленки из водного раствора поливинилового спирта (ПВС) и нитрата серебра AgNO3. подвергнутые воздействию ультрафиолетового облучения (УФ). Методом релаксационной спектрометрии изучено влияние наполнителя на спектры внутреннего трения композитного материала. Показано, что температура проявления диссипативных пиков потерь снижается. На спектрах внутреннего трения хелатов ПВС'-Ag- снижается интенсивность пика, ответственного за колебания ОН - групп. После облучения УФ хелаты исчезают. Температура стеклования в области проявления а-пика снижается.
БОТАНИКО-ГЕОГРАФИЧЕСКИЙ АНАЛИЗ ТЫСЯЧЕЛИСТНИКА (ACHILLEA L. - ASTERACEAE) СИБИРИ И КАЗАХСТАНА
Authors: Кулемин Ю.Е. , Куприянов А.Н.
Published: February 2024

Всего на территории Сибири и Казахстана встречается 19 видов рода Achillea L. и один гибрид (на территории Сибири встречается 12 видов и один гибрид, на территории Казахстана 14 видов и один гибрид). Ботанико-географический анализ рода Achillea показал, что на территории Сибири и Казахстана прослеживаются устойчивые связи с южно-европейскими степными видами и среднеазиатскими монтанными видами. Особенностью распространения видов рода Achillea является широкое присутствие их в гипоарктической, лесной, лесостепной, степной зонах. Разнообразие видов связано, так же и с горными поднятиями.
ГЕНЫ ПАТОГЕННОСТИ ЛАКТОЗОНЕГАТИВНЫХ ESCHERICHIA COLI, ВЫДЕЛЕННЫХ У ПАЦИЕНТОВ С COVID-19
Authors: Назарова М.В. , Мастиленко А.В. , Потатуркина-Нестерова Н.И.
Published: February 2024

Приведены результаты выявления генов патогенности 21 штамма лактозонегативных Escherichia coli, изолированных у больных COVID-19 и у 10 штаммов, выделенных у клинически здоровых людей. Проведен биоинформационный анализ консервативных участков исследуемых фрагментов геномов E. coli. Исследование нуклеотидных последовательностей лактозонегативных E. ooli показало присутствие генов патогенности у 95,2% штаммов, выделенных у больных COVID-19 и у 40% штаммов, изолированных у клинически здоровых людей.
ИССЛЕДОВАНИЕ ГЕНОТОКСИЧЕСКОЙ АКТИВНОСТИ CALENDULA OFFICINALIS И MENTHA AQUATICA
Authors: Соловых Г.Н. , Тихомирова Г.М. , КольчугинаГ Ф. , Кануникова Е.А. , Власова А.С. , Ильясов М.З. , Кануникова Я.С.
Published: February 2024

На фоне дефицита высокоэффективных фармакологических средств для лечения социально значимых заболеваний актуальной задачей является выделение биологически активных соединений растительного происхождения из лекарственных трав и использование их в лечебной практике. Несмотря на развитие фармакологии, многие растения остаются незаменимыми источниками биологически активных веществ и широко применяются как вспомогательные средства при терапии многих заболеваний. Однако, как любой фармацевтический продукт, выделенные вещества должны проходить тщательную проверку на тератогенность, мутагенность и канцерогенность. Стоит отметить, что такое сырье не всегда подвергается анализу на содержание потенциально вредоносных веществ, которые могут лежать в основе генотоксической активности. Всё сказанное подтверждает высокую значимость представленных в статье данных, посвященных оценке генотоксической активности лекарственных растений Оренбургской области.
ИСПОЛЬЗОВАНИЕ СТИМУЛЯТОРОВ КОРНЕОБРАЗОВАНИЯ ДЛЯ РАЗМНОЖЕНИЯ АЛЫЧИ ЗЕЛЕНЫМИ ЧЕРЕНКАМИ
Authors: Пашутин В.Р. , Донских В.Г. , Орлова Е.Е. , Крючкова В.А.
Published: February 2024

Большинство плодовых косточковых растений, помимо имеющихся ценных для потребителей качеств плодов, обладают высокой декоративностью. Декоративные формы алычи зачастую используются как для озеленения городских территорий, так и для придорожных зон. Увеличивающиеся потребности в однородном и соответствующем сортовому описанию посадочном материале, приводит к необходимости ускорять производство требуемых растений. Цель данного исследования - сравнить влияние стимуляторов корнеобразования на укореняемость зеленых черенков алычи. Исследование выполнено в 2023 году на территории лаборатории культурных растений ГБС РАН. Опыт заложен 18 июля. По результатам исследования установлено, что обработка зеленых черенков алычи стимуляторами корнеобразования позволяет не только повысить процент укорененных черенков, но также приводит к развитию более компактной и плотной корневой системы у черенков, что в дальнейшем позволяет снизить риски повреждения сформированной корневой системы при пересадке растительного материала.
К ВОПРОСУ О СЛОЖНОСТИ ПРОГНОЗИРОВАНИЯ ПРОСАДОЧНОСТИ ДИСПЕРСНЫХ СВЯЗНЫХ ЛЁССОВЫХ ГРУНТОВ
Authors: Хансиварова Н.М.
Published: February 2024

На основе анализа научных исследований разных лет, выполненных для юга России, Белоруссии и некоторых стран бывшего СНГ обозначены особенности применения корреляционно-регрессионных методов при изучении просадочных лёссовых грунтов. Отмечается относительно невысокая эффективность результатов корреляционно-регрессионного анализа. Коэффициенты корреляции, между относительной деформацией просадочности и некоторыми свойствами грунтов демонстрируют, в основном, умеренную и среднюю тесноту связи. Причинами этого являются сложность дисперсных грунтовых систем, влияние некоторых региональных геологических и климатических факторов, отсутствие численных показателей текстурных особенностей и условность показателей прочности и пустотности.
ИССЛЕДОВАНИЕ ФРЕЙМВОРКОВ ANGULAR И PREACT ДЛЯ РЕАЛИЗАЦИИ КЛИЕНТСКИХ ВЕБ-ПРИЛОЖЕНИЙ
Authors: Короленко И.А. , Соболь Б.В.
Published: February 2024

В данной работе рассматриваются фреймворки Angular и Preact, применяемые для создания части Представления клиентских веб-приложений. Изучаются их устройство, предлагаемый подход в разработке клиентских приложений, решаемые и создаваемые им проблемы, сильные и слабые стороны, а также особенности и ограничения в применении.
СРАВНЕНИЕ ОПТИМИЗИРОВАННОГО АСИНХРОННОГО И СИНХРОННОГО ГИСТЕРЕЗИСНОГО ЭЛЕКТРОДВИГАТЕЛЕЙ В ЭЛЕКТРОПРИВОДЕ ЭЛЕКТРОВЕРЕТЁН
Authors: Абдугалиев Н.И. , Цуй Ш. , Вэй Го. , ОСТАНИН С Ю.
Published: February 2024

Проведён сравнительный анализ асинхронного электродвигателя и синхронного гистерезисного электродвигателя для электропривода технологических механизмов современных и новых разрабатываемых технологических машин по производству и переработке химических нитей. Выявлены и подтверждены преимущества применения для таких механизмов и машин гистерезисных электродвигателей и электроприводов по сравнению с асинхронными электродвигателями и электроприводами.
СРАВНИТЕЛЬНЫЙ АНАЛИЗ АСИНХРОННОГО И СИНХРОННОГО ГИСТЕРЕЗИСНОГО ЭЛЕКТРОПРИВОДОВ ЭЛЕКТРОВЕРЕТЁН ТЕХНОЛОГИЧЕСКИХ МАШИН
Authors: Останин С.Ю. , Федоров И.А. , Абдугалиев Н.И. , Цуй Ш. , Вэй Го.
Published: February 2024

Проведён сравнительный анализ электроприводов мехатронного устройства на базе асинхронного и синхронного гистерезисного электродвигателей для рабочих механизмов современных и новых разрабатываемых технологических машин по производству химических нитей. Показаны преимущества применения гистерезисных электродвигателей. Подтверждена точность математической модели, разработанной и использованной для проектирования гистерезисных электродвигателей.
МОДЕЛИРОВАНИЕ И АНАЛИЗ ПАРАМЕТРОВ ТЕХНОЛОГИЧЕСКОГО ПРОЦЕССА ПОЛУЧЕНИЯ ПОЛИВИНИЛХЛОРИДА
Authors: Коваленко Ю.Ф. , Шулаева Е.А.
Published: February 2024

В данной работе была представлена разработка имитационно-моделирующего комплекса «Полимеризация винилхлорида суспензионным способом». Показаны основные характеристики процесса, определены показатели качества процесса. Математические зависимости, полученные в ходе исследования могут быть использованы для поддержания заданной производительности производства. Определены зависимости для управления расходом хладагента в охлаждающую рубашку реактора для обеспечения изотермического проведения процесса.
ОЦЕНКА ПРОФЕССИОНАЛЬНЫХ РИСКОВ ПЕРСОНАЛА В МЕХАНИЗИРОВАННОМ АГРОПРОМЫШЛЕННОМ КОМПЛЕКСЕ МЕТОДОМ ИНДЕКСА ЭЛМЕРИ
Authors: Таран Д.В. , Вишняк М.Н. , Калин А.Ю.
Published: February 2024

Актуальность проведения превентивных мероприятий в области охраны труда в механизированном агропромышленном комплексе Алтайского края оправдана высоким травматизмом. В данной работе изучается способ анализа рабочих мест методом Элмери с целью получения объективных данных о профессиональных рисках и использования полученных сведений для улучшения условий труда.
IMPLEMENTATION OF DIPOLE ANTENNA WITH SQUARE REFLECTOR
Authors: Azhar Muhammad Reynaldi , Suryadi Dedy , Imansyah Fitri
Published: February 2024

This research is about how to develop a signal receiving antenna by using a tin can as a reflector and a ½ Lambda Dipole-shaped copper wire as a driver. With a direct experimental method to the research location which is useful for analyzing each signal strength captured. One of the objectives of this research is to support the improvement of the creative economy in Sungai Kupah Village, which still has inadequate signal quality. The results of this study indicate that only by using a tin can antenna can improve the quality of GSM signals. There are 2 providers used, namely Tri and Telkomsel by taking variable values of Signal Strength, RSSI, SINR, RSRP, RSRQ and taking daily data for 5 days of research in the morning and evening which aims to analyze what changes in value there are. variable data. The average value obtained by Provider Telkomsel for 5 days in the morning is Signal Strength -108.8 dBm, RSSI -78.62 dBm, SINR 3.78 dB, RSRP -108.8 dBm, RSRQ -12.1 dB, Ping 103.83 ms, Upload 60.21 Mbps, Download 9.92 Mbps. The average value obtained by Telkomsel Provider for 5 days afternoon is Signal Strength -116 dBm, RSSI -85.74 dBm, SINR 1.8 dB, RSRP -116 dBm, RSRQ -11.3 dB, Ping 156.33 ms, Upload 78.84 Mbps, Download 11.64Mbps. The average value obtained by Provider Tri for 5 days in the morning is Signal Strength -112.2 dBm, RSSI -85.42 dBm, SINR 5.88 dB, RSRP -122.2 dBm, RSRQ -9.3 dB, Ping 130.94 ms, Upload 50.84 Mbps, Download 8, 05Mbps. The average value obtained by Provider Tri for 5 days afternoon is Signal Strength -111.2 dBm, RSSI -84.34 dBm, SINR 6.62 dB, RSRP -111.2 dBm, RSRQ 9.9 dB, Ping 91.94 ms, Upload 14.60 Mbps.
ANALYSIS OF TELEVISION SIGNAL BOOSTERS USING DIGITAL TELEVISION BOOSTERS AND ANTENNA
Authors: Putri Venny Manca , Imansyah Fitri , Yacoub Redi Ratiandi
Published: February 2024

A digital antenna is a device used to capture digital signals. Digital television broadcasts are capable of transmitting better reception quality image signals on the television screen than analog broadcasts. Using an antenna without a booster causes less than optimal reception for several stations that are quite far from the receiving antenna. The television antenna booster functions as an amplifier for signal losses received from the antenna via coaxial cable. The signal that enters the antenna through the cable is a very weak RF signal. The booster itself works as an RF signal amplifier and also acts as a frequency selector used by the television receiver (VHF or UHF). This research aims to analyze the comparison of the performance of two antenna boosters, namely the TOYOSAKI Booster and MATRIX Booster, using digital antennas, namely the TOYOSAKI, MATTRIX and TAFFWARE antennas, to find a comparison of which antenna and booster are the best. This research uses the SINPO method, namely a number code to assess signal strength, interference, atmospheric noise, propagation conditions, and general impression of reception. Ratings are made with numbers ranging from 5 (very good) to 1 (very bad). The research results show that the quality of the images produced by the TOYOSAKI and MATRIX antennas is better using the MATRIX Booster than using the TOYOSAKI Booster. Meanwhile, for the TAFFWARE antenna, it is better to use a TOYOSAKI Booster than to use a MATRIX.
DISTRIBUTION TRANSFORMER LIFE LOSS ANALYSIS ON JTM 20 KV DUE TO AMBIENT TEMPERATURE AND LOADING
Authors: Dupis Pinsensius , Gianto Rudi , Junaidi Junaidi
Published: February 2024

A continuously operating transformer will inevitably undergo a temperature rise, with the iron core and copper coil as the primary sources of heat generation. The maximum temperature occurring in these components, also known as the hottest spot temperature, is the hottest point. It is essential to maintain a regular flow of temperature within safe limits to prevent any damage. The objective of this study is to estimate the remaining life of the distribution transformer at Tanjungpura University by analyzing its life shrinkage under JTM 20 kV's ambient temperature and loading conditions. To achieve this, transformer loading and top oil temperature were measured for one week. The Montsinger equation was utilized for calculating the transformer aging rate, while a service life of 20 years was assumed as per IEC 60354. Based on findings from research conducted at 4 locations, it was observed that the transformer experiences varying loads with temperature increases exclusively on weekdays from Monday to Friday. The age shrinkage values for each transformer were as follows: 0.0728 p.u, 0.0493 p.u, 0.0044 p.u, and 0.0043 p.u. Considering these research outcomes, the estimated remaining lifespan of the Tanjungpura University distribution transformer is long, and the transformer is in good condition.
Rheological Study: Sodium Hexametaphosphate's Influence on Emulsification and Stability of Nitrocellulose-Butanol Colloid Lacquers
Authors: Saini Ritu , Garg Ashish
Published: February 2024

In this paper, we study the effect of Sodium Hexametaphosphate on the Nitrocellulose butanol wet for the emulsification and stability of the resulting colloid. Nitrocellulose wetted with butanol is used in lacquers for high-gloss automotive finishes and leather finishing and plays a pivotal role in diverse industries due to its unique glossing properties. We investigated the rheological properties of this Nitrocellulose-butanol wets with and without Sodium Hexametaphosphate at various temperatures. We performed multiple tests such as oscillatory rheometry, steady shear rheometry, and time sweep tests at various temperatures to understand these solutions' temperature characteristics, shelf-life, and stability with time. We find that the Sodium hexametaphosphate helps prevent the aggregation of nitrocellulose particles, stabilize them, and improve the rheological properties of the colloid, leading to better application and performance characteristics.
pH Stimuli Responsive Dextran Gated Mesoporous Silica as a Viable Delivery Vehicle
Authors: WAIDI Yusuf Olatunji
Published: February 2024

Mesoporous materials hold immense potential due to their diverse applications (catalysis, separation, drug delivery, etc.) viability. To unlock this potential, controlling the transport of molecules within their nanochannels is crucial. This study explores a novel technique to manipulate pore properties by hetero-functionalizing mesoporous silica with carboxylic acid and propylamine groups, creating pH-responsive surfaces. The negatively charged surface at basic pH attracts and loads a cationic dye through electrostatic interactions. This cargo can be efficiently released by switching to acidic pH, reversing the surface charge. Furthermore, the system incorporates dextran as a "gatekeeper" for controlled release. The study demonstrates significant differences in release profiles between functionalized materials, highlighting the effectiveness of this approach. Notably, the functionalization method strategy using 1,4-dioxane and appropriate reaction timing enables the desired properties for the first time. This work paves the way for designing advanced mesoporous materials with tailored functionalities for various applications.
Targeting SHP2 Cryptic Allosteric Sites for Effective Cancer Therapy
Authors: Rehman Ashfaq Ur , Zhao Cizhang , Wu Yongxian , Zhu Qiang , Luo Ray
Published: February 2024

SHP2, a pivotal component downstream of both receptor and non-receptor tyrosine kinases, has been underscored in the progression of various human cancers and neurodevelopmental disorders. Allosteric inhibitors have been proposed to regulate its autoinhibition. However, oncogenic mutations, such as E76K, convert SHP2 into its open state, wherein the catalytic cleft becomes fully exposed to its ligands. This study elucidates the dynamical properties of SHP2 structures across different states, with a focus on the effects of oncogenic mutation on two known binding sites of allosteric inhibitors. Through extensive modeling and simulations, we further identified an alternative allosteric binding pocket in solution structures. Additional analysis provides insights into the dynamics and stability of the potential site. In addition, multi-tier screening was deployed to identify potential binders targeting the potential site. Our efforts to identify a new allosteric site contribute to community-wide initiatives developing therapies using multiple allosteric inhibitors to target distinct pockets on SHP2, in the hope of potentially inhibiting or slowing tumor growth associated with SHP2.
Fungal peptidomelanin: a novel metabolite for the amelioration of soil heavy metal toxicity
Authors: Kolipakala Rakshita Sukruth , Basu Suranjana , Sarkar Senjuti , Biju Beneta Merin , Salazar Daniela , Reddy Likhit , Balaji Harshitha , Nath Shrijita , Samprathi Anish Hemanth , Shetye Aparna , Nagarajan Deepesh
Published: February 2024

Heavy metal contamination of agricultural soils reduces crop yields, contaminates groundwater and disrupts local ecosystems. Here, we describe a novel, water-soluble form of melanin (peptidomelanin) capable of chelating heavy metals in large quantities. Peptidomelanin is composed of an L-DOPA core polymer that is solubilized via short, heterogeneous peptide chains with a mean amino acid length of ∼2.6. It is secreted by the spores of Aspergillus niger melanoliber during germination. It was found to chelate large quantities of lead, mercury, and uranyl. It increased the germination rate, seed mass, and shoot length of wheat planted in substrate contaminated with 100 ppm mercury. Therefore, peptidomelanin may increase crop yields in contaminated agricultural soils treated in situ with the substance.
Preparation of Tunable Multicolor Persistent Room Temperature Phosphorescence Materials by Doping Cellulose Nanocrystals with Aromatic Carboxylic Acids
Authors: Lei Xiaoping , Wang Jun , Jin Feng , Liu Man , Zhou Qing
Published: February 2024

Persistently adjustable room temperature organic (p-RTP) luminescent materials have broad application prospects in multiple anti-counterfeiting encryption and other fields. It is generally difficult for single component substances to achieve adjustable full color gamut room temperature afterglow, and dual component doping may be a feasible solution. Here, cellulose nanocrystals (CNC) were doped with aromatic acid molecules of different conjugation levels that can generate various interactions, and a full-color gamut long afterglow emitting luminescent material with blue to red light was successfully prepared under the same excitation. Not only does it achieve adjustable afterglow color, but it also has long afterglow emission (447.02 ms). The crystallinity of CNC and its strong hydrogen bonding with doped molecules endow aromatic acid molecules with a liquid nitrogen like environment, resulting in a multi-color afterglow under strong conformational hardening. This simple and low-cost method for preparing powder materials with all color gamut adjustable p-RTP emission has proven to have great commercial prospects in the field of multiple anti-counterfeiting encryption.
Los orígenes de la teoría del imperialismo: la Socialdemocracia británica ante la Segunda Guerra Bóer (1896-1902)
Authors: Giorgis Emiliano
Published: February 2024

El presente libro analiza las posiciones teóricas y políticas de la Social Democratic Federation (SDF) frente al imperialismo en el marco de la segunda guerra bóer, tomando en consideración los siguientes componentes: el colonialismo, en el sentido de la valoración de la SDF sobre la expansión colonial europea y la realidad de los pueblos coloniales, en este caso la situación del pueblo bóer y de las poblaciones nativas de Sudáfrica; la política colonial, entendida como las discusiones del gobierno de las colonias, ya sea la posibilidad de establecer algún tipo de federación imperial o la necesidad de abandonarlas; el imperialismo en sí mismo, en el que incluía los debates sobre las causas económicas de la expansión de las potencias y su carácter de política generalizada de los Estados burgueses o de fase del capitalismo; la guerra imperialista y la defensa nacional en el sentido de la posibilidad de una guerra entre las potencias europeas y la necesidad de defender Gran Bretaña y sus posesiones y, la segunda guerra bóer en sí misma, lo que implica tener en cuenta las causas adjudicadas al conflicto, las posiciones de los distintos militantes del partido (apoyando o condenando el conflicto) y los medios para frenarla.
Children of Bill 82: Reflective Histories of Disability and Childhood in Ontario, Canada
Authors: Underwood Kathryn , Musleh Ayshia
Published: February 2024

Through an analysis of personal histories, we reflect on changes in disability discourses in educational contexts since the 1970s. We argue that educational systems are deeply resistant to critical discourse of disability even while espousing social justice principles. We simultaneously recognize the disconnection between disability, education, and the lived experiences of disabled children, and the way in which their experiences are framed. We call for a more integrated discourse between academic theories of disability, professional systems, and children’s lived experiences in order to better care for children and their families, and to address injustice in education systems.
Concordancia entre las listas de medicamentos esenciales y las guías para diabetes en América Latina y el Caribe
Authors: Urtasun Martín Alejandro , Dorati Cristian , Cañás Martín , Bruzzone María Silvina , Marín Gustavo H. , Iusef Venturini Nasim , Mordujovich Buschiazzo Perla
Published: February 2024

Objetivo.

Analizar la existencia y actualización de las listas de medicamentos nacionales (LMN) y guías de práctica clínica (GPC) para el tratamiento de la diabetes en América Latina y el Caribe (ALC). Comparar los fármacos incluidos en las listas y guías de cada país, entre sí y con los de la Organización Mundial de la Salud (OMS).

Métodos.

Estudio de corte transversal. Se identificaron las LMN y GPC para diabetes en los sitios web de la Organización Panamericana de la Salud y de las autoridades sanitarias nacionales. Se relevaron los fármacos y se analizaron por grupo farmacológico según el cuarto nivel de la nomenclatura ATC. Se utilizó el puntaje F1 para evaluar la proximidad de las LMN con la lista modelo de medicamentos esenciales (LMME) de la OMS.

Resultados.

Del total de países, 87,2% cuentan con LMN, y 91% con GPC (78% y 45% actualizadas en los últimos 5 años, respectivamente). En comparación con los 6 grupos de hipoglucemiantes de la LMME, las LMN tenían una mediana (rango) de 6 (4-13) y un puntaje F1 de 0,80; esto indica una consonancia adecuada. Las GPC tenían una mediana (rango) de 12 (1-12) hipoglucemiantes frente a los 8 de las guías de la OMS. Las GPC tuvieron una mediana de 15 fármacos más que las respectivas LMN.

Conclusiones.

Si bien la mayoría de los países de ALC cuentan con LMN y GPC para diabetes, la falta de concordancia entre ellas limita su eficacia. Es necesario alinear los procesos y criterios de elaboración de estas dos herramientas de la política de medicamentos.
Importance of Happiness and Meaningfulness of Work in Increasing Work Engagement of Millennial Generation in the Digital Age: Systematic Literatur Review
Authors: Kusumawati Elza , Matulessy Andik , Rini Rr. Amanda Pasca , Muhid Abdul
Published: February 2024

Abstract
Background: The mixing of 3 generations (x, millennial / y and z) in the world of work raises differences in the picture of work ethos and attachment. The company has a strategy of creating superior employees. Millennial employees show a desire to be appreciated, maximize work time and prioritize mental health, so that employees can still work in happy conditions and not depressed. Objective: This research shows the importance of happiness and work meaning felt by millennial employees to increase work engagement to the global competition. Method: Systematic literature review by identifying, assessing, and synthesizing literature search results through Google Scholar, Scopus, Research Gate, and Garuda. Results: 12 literature studies show that the work attachment of millennial generation employees is at a moderate level and is still below the work attachment of previous generations. Conclusion: Companies can provide work comfort and opportunities to be actively involved in work so that a sense of meaning arises for the work done to increase employee engagement in the company.
 
Abstrak
Latar Belakang: Percampuran 3 golongan generasi (x, milenial/y dan z) di dunia kerja menunculkan perbedaan gambaran etos dan keterikatan kerja. Perusahaan memiliki strategi menciptakan karyawan unggul. Karyawan milenial menunjukkan keinginan untuk dihargai, memaksimalkan waktu kerja dan mengutamakan kesehatan mental, sehingga karyawan tetap bisa bekerja dalam kondisi bahagia dan tidak tertekan. Tujuan: Penelitian ini mengetahui pentingnya kebahagiaan dan kebermaknaan kerja yang dirasakan oleh karyawan milenial terhadap peningkatan keterikatan kerja pada persaingan global. Metode: yang digunakan adalah Systematic literatur review dengan mengidentifikasi, menilai dan menyintesiskan hasil penelusuran kepustakaan melalui google scholar, Scopus, research gate dan garuda. Hasil: 12 studi kepustakaan menunjukkan bahwa keterikatan kerja yang dimiliki para karyawan generasi milenial berada di taraf sedang dan masih di bawah keterikatan kerja yang  dimiliki para generasi sebelumnya. Simpulan: Perusahaan dapat memberikan kenyamanan kerja dan kesempatan untuk terlibat aktif dalam bekerja sehingga muncul rasa bermakna atas pekerjaan yang dilakukan sehingga dapat meningkatkan keterikatan kerja karyawan di perusahaan.
Managing Academic Stress: Case Study of High School Students and Strategies in Biology Learning
Authors: Qisthi Naufalia , Juniarti Mia Angrianan , Hamdiyati Yanti , Rahmat Adi , Winarno Nanang
Published: February 2024

Abstract
Background: Stress is a phenomenon that is often ignored in society because it is related to mental health. Academic stress is a subjective response to high academic demands and changes in the school environment. Objectve: These findings highlight the need for educational institutions to consider lesson timing to manage students' academic stress. Method: The research method used is quantitative descriptive. In data analysis, 40 students from one class were taken as samples using purposive sampling technique. The sample determined by the researcher was public and private high school students without gender restrictions. Result: The variable biology lesson hours has a significant correlation with students' academic stress levels, while gender does not have a significant correlation. The Kruskal Wallis test showed little difference in stress levels between biology lessons held in the morning or afternoon. Conclusion: Using the SEL approach can help educational institutions create learning environments that are more adaptive and responsive to students' needs in dealing with academic stress.
 
Abstrak
Latar Belakang: Stres merupakan fenomena yang sering diabaikan dalam masyarakat karena terkait dengan kesehatan mental. Stres akademik merupakan respons subjektif terhadap tuntutan akademik yang tinggi dan perubahan lingkungan sekolah. Tujuan: Temuan ini menyoroti perlunya institusi pendidikan mempertimbangkan pengaturan waktu pelajaran untuk mengelola stres akademik siswa. Method: Penelitian ini menggunakan metode deskriptif kuantitatif untuk mengeksplorasi tingkat stres akademik siswa Sekolah Menengah Atas pada pelajaran biologi. Metode penelitian yang digunakan yaitu deskriptif kuantitatif. Dalam analisis data, 40 siswa dari satu kelas diambil sebagai sampel menggunakan teknik purposive sampling. Sampel yang ditentukan oleh peneliti yaitu siswa SMA negeri dan swasta tanpa batasan jumlah gender. Hasil: Variabel jam pelajaran biologi memiliki korelasi signifikan dengan tingkat stres akademik siswa, sedangkan gender tidak memiliki korelasi signifikan. Uji Kruskal Wallis menunjukkan sedikit perbedaan dalam tingkat stres antara pelajaran biologi yang diadakan pada jam pagi atau siang. Simpulan: Penggunaan pendekatan SEL dapat membantu institusi pendidikan menciptakan lingkungan pembelajaran yang lebih adaptif dan responsif terhadap kebutuhan siswa dalam menghadapi stres akademik.
Si pavorida y despavorida, ¿por qué no *pampanante y despampanante?
Authors: Núñez Ramos Rafael , García Rodríguez Javier , Lorenzo González Guillermo
Published: February 2024

Este ejercicio de Morfología Deconstructivista sigue la pista de la deriva simbólica que se sigue de las fugas, compuertas agrietadas, *calabros y descalabros de los procesos (des)compositivos de (de)formación de palabras de la lengua castellana. Se observa que la dudosa plasticidad terminológica reversa asociada y disociada al verbo 'despampanar' y a sus diversos ecos explica la más que justificable incontinencia interpretativa (o deriva del interpretante) ante muestras del acervo poético que el folklorismo considera, de manera ingenua, semánticamente monolíticas.
El fatalismo trágico en "Amor y Pedagogía" (1902) y "Abel Sánchez" (1917), de Miguel de Unamuno
Authors: Ahufinger Vicente Lydia
Published: February 2024

En este artículo se analiza la pervivencia de algunos conceptos trágicos de la literatura clásica griega en dos obras de Miguel de Unamuno, a saber, Amor y Pedagogía (1902) y Abel Sánchez (1917). Para ello, se examina la estructura narrativa de ambas nivolas, así como las conexiones temáticas entre ellas. En suma, se acaba por delimitar la intención catártica bajo la que el auotr bilbaíno crea y dirige estas obras a su lector, siempre bajo la reflexión filosófica de la contradicción en el ser humano de las fuerza de la pasión y la racionalidad. Al mismo tiempo, se trata la posible influencia platónica en la figura del demonio como antecedente del concepto daimon, como tópos de origen grecolatino.
La representación del tiempo de la enunciación en "La maravillosa medicina de Jorge" de Roald Dahl
Authors: Martín Sánchez Óscar José
Published: February 2024

Los estudios de Teoría de la literatura sobre Literatura infantil y juvenil, aunque han aumentado en las últimas décadas, todavía hoy siguen vinculándose al panorama educativo y, por ello, tanto obras como autores son ignorados por la preceptiva literaria. En este trabajo se pretende, mediante la aplicación de la teoría genettiana en su variable tiempo de la enunciación, analizar la polimodalidad temporal en una obra de un autor de sobrado prestigio, La maravillosa medicina de Jorge (1981) de Roald Dahl (1916-1990), para evidenciar desde una perspectiva teórico-literaria su indudable calidad.
Sergio NAVARRO, “La comunidad inasible. La poesía española de la Transición en la crisis del humanismo”, León/Valladolid, Servicio de Publicaciones Universidad de León/Ediciones Universidad de Valladolid, 2023, 259 pp.
Authors: De Navascués Martínez Nicolás
Published: February 2024

Reseña de la obra de Sergio Navarro La comunidad inasible. La poesía española de la Transición en la crisis del humanimo.
Implementation of a Decision Support System with a Simple Additive Weighting Method for the Selection of Quality Bird Breeder
Authors: Septianto Naafi , Aryanto Joko
Published: February 2024

Indonesia is a country blessed with abundant natural resources, one of which is the diverse variety of chirping birds that captivate the attention of many. The high demand for these birds has led to a decline in the population of wild chirping birds due to increased illegal capture. To address this issue, bird breeding programs have been implemented. The selection of superior quality chirping birds will determine the offspring produced. Superior quality bird brooders can also increase the selling price of the resulting chicks. Therefore, the determination of superiorquality bird breeders is very crucial for decision makers who are related in this case are chirping bird breeders. If it is not done properly and accurately, the wrong selection of chirping birds often results in various problems. Some of the problems that arise include the results of tillers that have low quality to the difficulty of selling livestock produced tillers. Decision-making models can be used to help chirping bird breeders make decisions. The Simple Additive weighting (SAW) method is expected to be able to help overcome the problems encountered. The purpose of this study was to create a decision-making system for the selection of superior quality chirping birds. It is hoped that there will be no mistakes in the selection of chirping birds.
Optimizing Biomass Pre-Treatment Technologies for BBJP Plants in Indonesia: A Multi-Criteria Decision Making Approach
Authors: Salman Haekal Awliya Muhamamad
Published: February 2024

The challenges of energy consumption and environmental sustainability are pronounced in the dynamic landscape of contemporary industries driven by Industry 4.0 technologies. Indonesia, heavily reliant on fossil fuels, charts a course toward a clean energy future with a National Energy Transition Roadmap for Net Zero Emission by 2060. This transition involves innovative strategies such as biomass co-firing and waste utilization in Solid Recovered Fuel (SRF) plants, known as Bahan Bakar Jumputan Padat (BBJP) plants. To optimize these BBJP plants, this study employs Multi-Criteria Decision Making (MCDM) methodologies, specifically the Analytical Hierarchy Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), to evaluate and select pre-treatment technologies. Criteria include capacity, conversion process, waste type, electricity consumption, operational ease, land requirement, and investment cost. Comparing bio-drying, thermal drying, and mechanical drying, AHP ensures consistent criterion weights, with TOPSIS ranking bio-drying as the most favorable, followed by thermal and mechanical drying. The study acknowledges global waste management challenges and introduces a mobile-modular containerized BBJP/SRF plant model, addressing installation, maintenance, scalability, and adaptability issues. While recognizing challenges, especially in pre-treatment processes, the research emphasizes the need for efficient and cost-effective solutions. Practical implications include enhanced decision-making in biomass drying, identification of technology advantages and disadvantages, and a commitment to address challenges for sustainable implementation. The study contributes to Indonesia's energy transition discourse, advocating the pivotal role of BBJP plants in balancing Industry 4.0 demands and environmental protection, providing insights for stakeholders and decision-makers in advancing sustainable waste-to-energy initiatives.
Automated Maintenance System For Freshwater Aquascape Based On The Internet Of Things (Iot)
Authors: El Hakim Elang Bayu , Aryanto Joko
Published: February 2024

Aquascaping is a hobby that has gained considerable popularity across different age groups, from young to old. Aquascaping itself is the art of arranging plants, water, rocks, coral, wood and other natural elements in glass or acrylic containers. One of the main obstacles in the world of aquascaping is consistency, which is often difficult to achieve when the owner has a busy schedule or limited time. Without the implementation of Internet of Things (IoT) technology and microcontrollers connected to mobile applications, this drawback is even more pronounced. The inability to maintain consistency in maintenance can lead to a decline in aquascape quality, both in terms of aesthetics and ecosystem health. Therefore, an innovative system using IoT is expected to provide a smart solution to overcome the major shortcomings of aquascape maintenance and enhance the experience of this hobby for its enthusiasts..
Yogyakarta Batik Image Classification Based on Convolutional Neural Network
Authors: Susanti Indah Dwi
Published: February 2024

This paper studies the efficiency of identifying motifs and patterns in Yogyakarta batik using the Convolutional Neural Network (CNN) algorithm. This research uses the AlexNet architecture on CNN to increase the accuracy of batik image classification. Apart from that, it also involves the use of Canny edge detection techniques and feature extraction using the Gray Level Co-occurrence Matrix (GLCM) to improve the feature extraction process in batik images. There are 6 folders representing 6 types of motifs containing -+20 to 25 data that have been prepared for the training session. Next, the data is processed with 20% of the data used for training and 80% for testing. The accuracy of this research using the SGDM optimizer reached 100%. The evaluation results provide insight into the extent to which edge emphasis can improve the model's ability to recognize and classify batik patterns. It also presents classification test results and evaluation metrics such as precision, recall, and F1 score.
On maximal operators associated with singular hypersurfaces
Authors: Usmanov S. E.
Published: February 2024

Maximal operators associated with singular hypersurfaces in multidimensional Euclidean spaces are considered. We prove the boundedness of these operators and define a critical exponent in the space of summable functions, when hypersurfaces are given by parametric equations.
Practical Aspects for Applying Picard Iterations to the SIR Model Using Actual Data
Authors: Youssef I. K. , Saad M. Khalifa , Dumlu Ali , Asklany Somia A.
Published: February 2024

The updated version of the Picard method for solving systems of differential equations is employed to solve the SIR system. A local performance of the Picard iteration algorithm combined with the Gauss-Seidel approach is applied to the SIR model. The integral form of the SIR model, in addition to the use of Gauss-Seidel philosophy (using the most recent calculated values), achieved more accuracy in the computational work than those obtained using the differential forms. Documented data regarding the spread of corona virus 19 in the Kingdom of Saudi Arabia region from April to the end of December 2020 were used to calculate the corresponding actual values for the parameters and the initial conditions. Due to efficient management and to obtain representable behaviours, we restricted the size of the study to only 1% of the population. The global characteristics of the integral formulation have affected the calculations accurately. The initial conditions and the model’s parameters are established depending on the documented data. The results illustrate the superiority of the updated Picard formulation over the classical Picard within their domain of convergence. The results of this study illuminate and validate the importance of mathematical modeling. These findings can provide valuable insights into mathematical modeling for those involved in environmental health research, especially those responsible for devising strategic plans.
Neuropsychiatric symptoms in Alzheimer’s disease
Authors: Vegytė J. , Podėnė R. , Dlugauskas E. , Vaitkevičius A.
Published: February 2024

Alzheimer’s disease is one of the most common neurodegenerative diseases among older people that manifests as deterioration of cognitive functions, impaired daily activities, and progressive degeneration of cerebral cortex neurons. Even up to 90% of Alzheimer’s patients develop neuropsychiatric symptoms at different stages of the disease. In some cases, neuropsychiatric symptoms appear earlier than cognitive symptoms. Neuropsychiatric symptoms worsen everyday activities, quality of life, and ability to socialise of people with Alzheimer's disease, making the diagnosis and treatment of these symptoms increasingly important. Evaluation of both cognitive and neuropsychiatric symptoms together with differentiation from primary psychiatric disorders is crucial for the correct diagnosis of Alzheimer’s disease. Furthermore, neuropsychiatric symptoms can be considered as risk factors for the development of Alzheimer’s disease. Treatment is recommended with combined pharmacological and non-pharmacological measures. Despite the large number of studies, the pathogenesis of the neuropsychiatric symptoms has not been studied in depth, therefore the treatments provided are not always effective. It is recommended that neuropsychiatric symptoms should be treated through a combined approach using pharmacological and non-pharmacological measures.