bluuebunny/crossref_metadata_2025 huggingface dataset:
Feasibility assessment of low-grade iron ore from El Ouenza mine by high-intensity magnetic separation
Authors: Bouzeriba H , Bouzidi N , Idres A , Laala I , Zaoui L
Published: February 2025

Purpose. The objective of this work in the first stage is to characterize the poor iron ore from the El Ouenza mine. Then, in the second stage, it is a question of valorizing it by high intensity magnetic separation.

Methodology. The characterization of representative samples taken from the study area was carried out using several techniques, including X-ray fluorescence spectrometry (XRF), X-ray diffraction (XRD), scanning electron microscopy coupled with energy dispersive spectroscopy (SEM-EDS), thermogravimetric analysis and differential scanning calorimetry (TGA/DSC), and Fourier transform infrared spectroscopy (FTIR). Processes involving a combination of calcination and high-intensity dry magnetic separation were used to upgrade the poor iron ore to meet the requirements of the steel industry.

Findings. The results obtained show that the El Ouenza iron ore consists mainly of ferrous minerals, notably hematite and goethite, as well as a siliceous and calcareous gangue. The treatment results enabled us to achieve a grade of 51.94 % for the sample calcined at 900 °C using a magnetic field of 2.3 T on the size fraction (-0.5 0.125) mm.

Originality. The originality of the work lies in the possibility of using combined methods, calcination and magnetic separation, to valorize poor iron ore from the Ouenza mine.

Practical value. This study shows that the results obtained by calcination and magnetic separation are very significant. These techniques enable us to obtain a concentrate with an iron content of 51.94 %, bringing value to the steel industry, eliminating the reserves of poor iron ore stored near the mine site and preserving the environment.
Impact of power electronics devices on leakage current in mine electrical systems: a case study in Vietnam
Authors: Nhu Do Y , Giang Nguyen Truong , Cuong Ngo Xuan , Khanh Nguyen Thac , Tuan Le Anh
Published: February 2025

Purpose. To determine the impact of power electronic devices on leakage current in underground mine AC power network. The research results allow choosing appropriate leakage protection method to improve electrical safety in underground mining.

Methodology. This study uses analytical methods and modeling methods on Matlab/Simulink software to determine, analyze, and evaluate the working current and leakage current in the mine power network containing power electronic devices.

Findings. A mine power network model containing inverter and electric motor was built by analytical method and simulated using Matlab/Simulink with model parameters U = 1,140 V, C = 0.19 uF/phase, R = 168 kΩ/phase. The research results show that, with a leakage resistance of 1 k, the leakage current value in the AC network with a frequency other than 50 Hz after the inverter (467 mA) is 1.52 times higher than the leakage current value in the AC network with a frequency of 50 Hz before the inverter (307 mA), and at the same time, many high-order harmonic components appear in the 50 Hz AC network with THD = 1.77. In addition, the research results also show that the leakage current in the AC network before and after the inverter depends less on the insulation resistance of the DC network but depends mainly on the insulation of the AC network, the leakage resistance and the operating frequency of the AC network.

Originality. Leakage current in AC power network containing power electronic devices in mining in Vietnam is studied. The research results show that when using a mine power network with an inverter, the leakage current on the AC side after the inverter has a larger value than the leakage current of the AC side before the inverter.

Practical value. The research results allow choosing the appropriate leakage protection method to improve electrical safety in underground mining.
Research on the effectiveness of using LSTM architecture in modeling the cognitive process of recognition
Authors: Miakenkyi A. V , Aleksieiev M. O , Matsiuk S. M
Published: February 2025

A person’s ability to recognize and separate the meanings of words when working with textual information refers to the higher cognitive functions of the brain, in particular to the cognitive process of recognition. The solution to the problem of extracting the meaning of words in text is related to the tasks of natural language processing (NLP) and is called word sense disambiguation (WSD). There are many approaches to solving WSD, particularly using neural networks.

Purpose. Creation and analysis of the bidirectional LSTM neural network architecture for solving the WSD problem in the Ukrainian language.

Methodology. One of the modern approaches to solving the WSD problem is the use of LSTM models – a type of recurrent architecture of neural networks that allows you to capture long-term dependencies when modeling sequences. To determine the effectiveness of using this architecture, two neural networks were built during the study: the classic LSTM architecture and its improved version – Bi-LSTM. As part of the study, a data set based on the SUM dictionary of the Ukrainian language was also created. The implemented models were trained on the generated data set, after which a comparative analysis of the obtained data was performed.

Findings. The analysis of the results of the accuracy of the built models made it possible to determine the efficiency of the neural network built according to the Bi-LSTM architecture. The obtained accuracy results are equal to 73 % for the LSTM model and 83 % for Bi-LSTM, respectively, which is due to the presence of an additional layer in the Bi-LSTM model, which provides the opportunity to take into account the full context of the word in the given text.

Originality. The paper establishes the effectiveness of the neural network model built on the Bi-LSTM architecture for solving the WSD problem in texts in Ukrainian in comparison with the classical LSTM architecture.

Practical value. As a result of the work, a model is proposed that allows solving the problem of eliminating the ambiguity of words in the Ukrainian language, and which can be used in text processing tasks, in particular for modeling the cognitive process of understanding.
Magnetic Resonance Imaging in Patients with Deep Bite and Disorders of the Musculoskeletal Complex
Authors:   Bogomolets National Medical University, Kyiv, Ukraine., Kyrychenko N. , Kostiuk T. ,   Bogomolets National Medical University, Kyiv, Ukraine.
Published: February 2025

Summary. The trend towards the progression of the prevalence of deep bite pathology among patients with a permanent bite, as well
as clinical manifestations of temporomandibular joint dysfunction in them, prompts an in-depth diagnosis not only of the state of the
dental and jaw apparatus but also the analysis of the morphology of bone and soft tissue structural elements TMJ.
The work aimed to study and analyze the peculiarities of the position and condition of the structural elements of the temporomandibular
joints of patients with a deep bite and clinical manifestations of TMJ dysfunction.
Research materials and methods. For a comprehensive analysis, magnetic resonance imaging was chosen, as it allows visualization
of not only the bony elements of the joints but also the soft tissues that are the direct elements of the temporomandibular joints and
surrounding them. 75 patients with deep bite and TMJ disorders were examined. The study presents the main results of measurements
of the ratios of the TMJ elements (the dimensions of the anterior, upper, and posterior articular bristles; the depth of the mandibular
fossa), as well as the morphological changes of the TMJ structural elements that occurred as a result of the impact of a pathological bite.
Patients were divided into two study groups depending on the degree of clinical manifestation of their dysfunction (with mild (h = 1–2)
and medium (h = 5–6) degrees of severity, according to Helkimo). According to the angle of inclination of the upper incisors, there was
a division into subgroups within the studied groups.
According to the results of the MRI analysis of the patients of the studied clinical groups, it was found that in subjects with retrusion
of upper incisors (2 subgroups of I and II groups), an upper anterial displacement of the articular heads of the lower jaw was registered,
in subjects with the normal inclination of incisors and protrusion (1 subgroup of I and II groups), an upper posterior displacement of
the articular condyles was registered. The anterior joint gap is larger in the examined patients of 2 subgroups of I and II groups, and the
mandibular fossa is deeper in patients of 1 subgroup of I and II groups.
Conclusion: displacement of the articular processes of the lower jaw of patients with retrusion of upper incisors is strongly posterior.
The results justify the need for further and detailed research into this pathology.
Keywords: temporomandibular joints (TMJ), orthodontics, deep bite, magnetic resonance imaging, musculoskeletal system, masticatory
muscles, muscle-articular complex, occlusion.
ОРГАНІЗАЦІЙНІ І ТЕХНОЛОГІЧНІ РІШЕННЯ ПРОФІЛАКТИКИ СТРЕСУ ТА ПОКРАЩЕННЯ ПСИХОЛОГІЧНОГО СТАНУ МОРЯКІВ НА СУДНІ
Authors: Головань А.І. , Гончарук І.П.
Published: February 2025

У цьому дослідженні вивчається психологічне здоров'я моряків і пов'язані з ним ризики тривалих періодів ізоляції від соціального середовища, високих робочих навантажень і обмеженого особистого простору. Відомо, що ці фактори становлять значні ризики для психологічного здоров'я моряків, які можуть проявлятися у вигляді стресу, депресії, хронічної втоми та соціальної ізоляції. Вплив цих факторів негативно позначається на ефективності виконання службових обов'язків, командній роботі та загальній безпеці мореплавства. Мета цього дослідження -проаналізувати сучасні підходи до профілактики стресу та ізоляції серед екіпажу суден, визначити ефективні методи психологічної підтримки моряків, а також дослідити можливості використання новітніх технологій, таких як телемедицина та доступ до Інтернету, для забезпечення психічного здоров'я екіпажу під час тривалих рейсів. У статті використано низку аналітичних методів, включаючи огляд сучасної наукової літератури, класифікацію факторів стресу та узагальнення практичних заходів профілактики. Такий системний підхід дозволяє запропонувати ефективні рішення проблеми. Дослідження визначило ізоляцію від сім'ї, обмежену соціальну взаємодію, мовні та культурні бар'єри в багатонаціональних екіпажах, а також фізичні умови праці, включаючи шум, вібрацію та екстремальні температури, як ключові фактори стресу для моряків. Запропоновані профілактичні заходи включають створення сприятливого робочого середовища, організацію дозвілля, проведення психологічних тренінгів, використання мобільних додатків для моніторингу стану здоров'я та забезпечення стабільного доступу до Інтернету. Інтеграція профілактичних заходів та новітніх цифрових технологій може значно знизити рівень стресу та ізоляції серед моряків, підвищити їхню психологічну стійкість та професійну ефективність. Спільні зусилля судновласників, капітанів та екіпажів сприяють створенню сприятливої атмосфери на борту судна, що, в свою чергу, покращує безпеку та загальний добробут моряків.
Ключові слова: стрес, ізоляція, екіпаж, психологічна підтримка, телемедицина, Інтернет, здоров’я, судноплавство.
УМОВИ ФОРМУВАННЯ МУСОННОГО ВІТРУ НАД ІНДООКЕАНСЬКОЮ АНОМАЛІЄЮ СИЛИ ТЯЖІННЯ
Authors: Калініченко Є.В. , Капочкіна М.Б. , Томчаковський Г. Г. , Кучеренко Н.В.
Published: February 2025

Тропічна зона Світового океану характеризується практичною відсутністю просторово часових змін інсоляції, відсутністю баричних градієнтів і, як результат, наявністю лише “пасатів”(зсув шару атмосферного повітря зі сходу на захід зі швидкістю 6 м/с). Така ситуація сприяє безпечному судноплавству. Виключенням є акваторія північної частини Індійського океану, де з червня по серпень генеруються потужні вітри південно-західного напрямку, які формують вітрові хвилі висотою до 7 м. Для забезпечення безпеки мореплавства потрібні методики прогнозування початку та закінчення “сезону” несприятливих погодних умов у зазначеному регіоні. Це потребує створення теорії мусонних вітрів та чисельних розрахунків просторово-часової мінливості літнього мусону. У роботі проаналізовано існуючі гіпотези причин порушення пасатної циркуляції у Індоокеанському регіоні, отримані чисельні оцінки впливу на рухомі оболонки Землі, на прикладі рідкої оболонки, просторово-часових змін прискорення вільного падіння (Δǥ).
Ключові слова: безпека судноплавства, мусонний вітер, супутникова альтиметрія, супутникова гравіметрія, фізико-статистичне моделювання, навігаційна гідрометеорологія.
ДОСЛІДЖЕННЯ ТЕХНОЛОГІЧНИХ ВАРІАНТІВ ПОБУДОВИ ЕЛЕКТРИЧНИХ СИЛОВИХ УСТАНОВОК НА ВОДНОМУ ТРАНСПОРТІ
Authors: Юрченко Є.М. , Голубєва С.М.
Published: February 2025

Метою статті є аналіз технологічних альтернатив для електричних суден та електричних рушійних систем у сфері водного транспорту. Мета роботи досягається шляхом виконання аналізу технологічних альтернатив для суден із застосуванням електричних силових установок. Наведена чітка класифікація технологічних альтернативних джерел енергії для експлуатації електричних суден. В якості таких альтернативних варіантів силових установок розглянуті були акумулятори, відновлювані джерела енергії, виробництво паливних елементів, а також електричні системи з виробництвом енергії від двигунів внутрішнього згоряння та акумуляторів. Огляд номенклатури існуючих і діючих суден дозволив виявити основні характеристики різних суден. Більшість комерційних суден, пропонованих промисловістю, призначені для експлуатації в морі. Доведено, що у сучасних умовах впровадження невеликих електричних суден на судноплавних водних шляхах з відстанню між акумуляторною інфраструктурою понад 50миль може бути важко реалізовуваним завданням. Силові установки, які повністю залежать від акумуляторів, складні в реалізації, оскільки автономність обмежена, а відстані між доками перевищують їх запас хода. Деякі судноплавні водні шляхи розташовані в районах з ускладненим доступом до електроенергії через географічні умови. Основним науковим результатом, одержаним у статті, є висновок, що гібридна система при теперішньому рівні розвитку транспортної галузі й інфраструктури є найкращою технологічною альтернативою для електричних суден. Ця система підвищує ефективність за рахунок впровадження електричних силових установок та акумуляторів, зменшує викиди за рахунок використання відновлюваної енергії та підтримує автономію за рахунок використання викопних ресурсів. Дана альтернатива є короткостроковим рішенням енергетичного переходу у водному транспорті.
Ключові слова: енергоефективність, екологічність, електротранспорт, силова електроніка, морський та річковий транспорт, суднові енергетичні установки, діагностування, ефективна потужність, передача потужності, судновий дизель.
КОМПЛЕКСНИЙ ПІДХІД ЩОДО ЗАБЕЗПЕЧЕННЯ ЛОГІСТИЧНОЇСТІЙКОСТІМУЛЬТИМОДАЛЬНИХ ПЕРЕВЕЗЕНЬ
Authors: Кучерук Г.Ю. , Горбань А.В.
Published: February 2025

У статті розглянуто сучасний стан розвитку мультимодальних перевезень, які є основою міжнародної торгівлі та важливим інструментом для забезпечення ефективності, стійкості й екологічності логістики. Описано стратегічне значення мультимодальних перевезень для України, враховуючи її географічне положення та потенціал стати ключовим транзитним вузлом між Китаєм і ЄС. Автори акцентують увагу на необхідності підвищення логістичної стійкості мультимодальних перевезень шляхом диверсифікації маршрутів, розвитку інфраструктури, впровадження цифрових технологій, екологічних підходів та адаптації до глобальних викликів, таких як пандемія COVID-19, війна та посилення екологічних вимог. У статті також запропоновано комплексний підхід до забезпечення логістичної стійкості, що включає розвиток сучасної інфраструктури, інтеграцію цифрових рішень (IoT, блокчейн, автоматизація) і дотримання екологічних стандартів. Наголошено на важливості міжнародної співпраці, інвестицій у транспортні хаби та інтеграції України до міжнародних транспортних коридорів. Запропоновані рекомендації спрямовані на створення інноваційної, ефективної та екологічно відповідальної транспортної системи, що відповідає викликам сучасного світу та сприяє економічному розвитку країни.
Ключові слова: мультимодальні перевезення, логістична стійкість, інфраструктура, цифровізація, екологічність, транспортні хаби, диверсифікація маршрутів, міжнародна співпраця, оптимізація логістики, транспортні коридори
Application and effect evaluation of intelligent computing in education and teaching reform and innovation
Authors: Tang Haili , Cao Xiaojuan , Hu Yuanbo
Published: February 2025

A multi-objective optimisation method based on the colony ant algorithm is studied to address the problem of learning resource allocation in a high-dimensional data environment. Each ant makes its own search decisions, but their sex hormones interact to speed up the search. A training method based on multi-objective optimisation is designed. Interaction with teachers and classmates is carried out and improvements are made to their global optimisation ability through forward and backward methods. The Pareto record set saves and updates. A set of multi-objective resource scheduling algorithms is constructed. The experimental results show that all the methods proposed in this paper can achieve better results in limited projects.
Inovasi Jambu Kristal Upaya Diversifikasi Produk Petani Desa Bantar Sari Kabupaten Bogor
Authors: Suyana Hilma , Madjid Suhirman , Muslikh Muslikh
Published: February 2025

Mitra dalam Program Kemitraan Masyarakat (PKM) adalah petani jambu kristal di Desa Bantar Sari, Kabupaten Bogor. UMKM di desa tersebut bertujuan untuk mengembangkan wisata petik jambu sebagai edu-wisata serta pemasaran daring. Namun, tidak semua jambu yang dipanen memenuhi standar pasar. Untuk mengatasi hal ini, PKM memberikan pelatihan dan pendampingan di bidang keuangan, pemasaran, dan produksi. Salah satu hasil utama dari PKM adalah diversifikasi produk, mengolah jambu kristal menjadi berbagai produk seperti jus, nastar, bolu, puding, keripik, dan dodol. Hal ini membantu meningkatkan pendapatan dan mengurangi kerugian akibat buah yang busuk. Selain itu, daun jambu kristal dapat diolah menjadi teh, mirip dengan ocha Jepang, dengan cara memijat daun agar jaringannya rusak sehingga aromanya muncul, sebelum dikeringkan di bawah sinar matahari atau disangrai. Jambu kristal kaya akan vitamin C yang berfungsi sebagai antioksidan, serta kalium yang membantu menurunkan tekanan darah. Daunnya mengandung polifenol yang dapat menurunkan kadar gula darah, tanin yang mencegah diare, dan antioksidan. Dengan mengolah baik buah maupun daunnya, UMKM dapat memaksimalkan potensi ekonomi jambu kristal sekaligus mengurangi limbah.
Perhutanan Sosial dalam Pengelolaan Sumber Daya Hutan Di Indonesia
Authors: Ikrar Jamika Fadel , Amran Ali , Umar Iswandi , Gusman Mulya
Published: February 2025

Forests are one of the living environments that are directly related to humans. The biggest problem in the forestry sector is the rate of deforestation and degradation. Management of forest resources with the community is a system of resource management that is carried out. Social forestry is a system of managing forest resources in state forest areas or private forests, which provides opportunities for local communities as main actors and partners to improve their welfare and realize forest sustainability. The results of the research reveal that forest management with the community is an example of social forestry implementation. The aim of forest management with the community is to encourage the management of forest resources through a combination of economic, ecological and social aspects in a proportional and professional manner.
Keywords: Forest management, environment, social forestry
RESPON PERTUMBUHAN KAPULAGA LOKAL (Amomum compactum Soland Ex. Maton) DAN KAPULAGA SABRANG (Elettaria cardamomum (L.) Maton Var. Mysore) TERHADAP CEKAMAN KEKERINGAN
Authors: Nurzaman Mohamad , Pridani Sri Ratu Dewi , Setiawati Tia
Published: February 2025

Drought stress is an inhibiting factor in agricultural, one of the effort to overcome these problems is to use varietiesof plants that are tolerant to drought stress. Cardamom is a plant of the Zingiberaceae which is able to grow indrought stress. This research aims to obtain the growth response of local Javanese cardamom (A. compactum)and true cardamom (E. cardamomum) and to obtain the kind of cardamom that is tolerant to drought stress. Thisresearch was conducted using experimental method and completely randomized design (CRD) with 2 x 4 factorialand four repetitions. The first factor was the variation of field capacity (K) and the second factor was the type ofcardamom (J). Parameters measured include the increase of plant height (cm), plant weight (grams), leaf area(cm2), number of leaves, leaf chlorophyll content (mg / l), and leaf proline content (ppm). The data was analysedusing analysis of variance (ANOVA) and Duncan test α 5%. Results showed that local Javanese cardamom (A.compactum) has better growth response and was more tolerant to drought stress compared to true cardamom (E.cardamomum).
Keywords: drought stress, local Javanese cardamom (A. compactum), true cardamom (E. cardamomum).
KERAGAMAN HERBA URBAN PINGGIR JALAN SAAT EL-NIÑO 2015-2016 DI UNIVERSITAS INDONESIA, DEPOK: DOMINASI SPESIES ASING
Authors: Mustaqim Wendy A. , Ningrum Aulia S. , Suffan Windra
Published: February 2025

One of the focuses of urban ecology is a study that regarded the native versus alien species. During the 2015-2016 El-Niño event, we have conducted an analysis on the diversity of living roadside herbs in a green landscape of Western Java from Universitas Indonesia. The result of the study revealed that a high percentage of non-native species (41.67%) in a roadside ecosystem during the El-Niño event. Axonopus compressus which is an alien species is the most important species based on its importance value index with 74.01%. This condition, together with the high percentage of non-native species show the resistance of those group in its new environment outside their native range even in one of the driest period. It also shows the possibility of such a group to become persist if the habitat of the native species affected by temperature increases, such as climate change.
Pengaruh Blended Learning Berbasis Elektronik Modul pada Materi Ekosistem Terhadap Motivasi Belajar Siswa Di MA NU Mazro’atul Huda Karanganyar Demak
Authors: Asyhari Andi , Rahmawati Aulia
Published: February 2025

This study aims: 1) to determine the application of the electronic-based blended learning model to the Ecosystem material at MA NU Mazro'atul Huda Karanganyar Demak for the 2020/2021 academic year; 2) to find out how the level of student motivation at MA NU Mazro'atul Huda Karanganyar Demak for the 2020/2021 academic year; 3) to determine the level of influence of Electronic-Based Blended Learning Modules on Ecosystem Materials on Student Learning Motivation at MA NU Mazro'atul Huda Karanganyar Demak for the 2020/2021 academic year. The method used is a quantitative method with the type of research Pre-Experimental Designs in the form of Intact-Group Comparison. The population in this study were students of class X IPA which consisted of 2 classes. Then the two classes were sampled using a non-probability sampling technique with saturated sampling type. Then the data was collected using a questionnaire and documentation. The data analysis method used is descriptive analysis and inferential statistics using t test. The results showed that there was a positive effect on electronic module-based blended learning on students' learning motivation, as evidenced by the hypothesis testing data using the Independent T-Test, the t-count value was 2.749 and the t-table value was 2.002. Because the mean t arithmetic > t table (2.749 > 2.002), or the value of t arithmetic = 2.749 lies outside the range -2.002 to +2.002. Thus, Ho is rejected and Ha is accepted, meaning that there is a difference between the average learning motivation of the experimental and control classes. Thus, there is an influence of the electronic module-based Blended Learning learning model on students' learning motivation.
A morfológiai tudatosság hazai, online mérése és eredményei 2–4. osztályos diákok körében
Authors: Varga Szilvia , Steklács János
Published: February 2025

Az elmúlt évtizedek kutatásainak eredményei az olvasás, szövegértés képességét egyre komplexebb, hierarchikus rendszerként értelmezik. Tanulmányunk ennek egyik fontos, hazai környezetben, magyar nyelven még alig feltárt részképesség, a szövegértés az olvasási képesség fejlődése szempontjából azonban fontos tényező, a morfológiai tudatosság vizsgálatára fókuszál. A kutatás elsődleges célja az volt, hogy online mérőeszközt hozzunk létre, amely a morfológiai tudatosságot méri az általános iskola 2–4. évfolyamán. A nagy mintás mérés (N = 4134) során a morfológiai tudatosság, és a szövegértés lehetséges kapcsolataira is igyekeztünk rávilágítani. Az öt résztesztből álló mérőeszköz szövegértési tesztet is tartalmazott. Kutatásunk főbb eredményeit három pontban foglalhatjuk össze: (1) létrehoztunk egy online mérőeszközt, amely a morfológiai tudatosságot megbízhatóan méri az általános iskola 2–4. évfolyamán; (2) a morfológiai tudatosság és a szövegértési képességek összefüggéseit bizonyítottuk, és jellemzőit elemeztük; (3) kimutattuk és elemeztük a részképesség fejlődését a 2–4. évfolyamon. Kutatásunk újszerű, mert a hazánkban empirikusan kevéssé vizsgált részképesség jellemzőit innovatív módszerekkel, online mérőeszközzel tárja fel. Eredményeink több későbbi kutatás számára nyújthatnak támpontot, valamint az osztálytermi gyakorlatban is alkalmazhatók. Mostani tanulmányunkban a magyar nyelvi jellemzőit helyezzük középpontba.
Error in the Law of Contract: Shaping a Doctrine Fit for the 21st Century
Authors: Richardson Lorna
Published: February 2025

This article examines error in the law of contract. For centuries it has been said to be one of the most complex parts of contract law. In the mid twentieth century the Scots law of error was described as being in a “state bordering on chaos” and more recent judicial statements continue to recognise the difficulties. Given the problems with error it is rarely used as a basis to challenge the validity of a contract. As a result, few cases are heard in court and the law of error fails to develop, such that our understanding of the area remains limited

There has been some important academic commentary on the law of error. However, most of that discussion sought to challenge developments that had taken place, especially the influence of English law in this area, or to develop an underlying rationale for decisions that appear difficult to reconcile. It may be said that given the problems of simply understanding what the Scots law of error actually is most of the focus to date has been on that alone. As such, no significant attention has been given to what the law of error ought to be
Unlocking health insights: exploring intention to adopt district health information systems in Bahir Dar City, northwest Ethiopia
Authors: Guadie Habtamu Alganeh , Kindie Amarech , Derseh Hunegnaw Almaw , Atnafu Desta Debalkie
Published: February 2025

Background

District Health Information System version 2 (DHIS2) is an open-source platform designed for data collection, processing, analysis, and visualization within healthcare systems. However, there is limited empirical evidence regarding health professionals’ intentions to use district health information systems. Understanding the factors influencing health workers’ intention to utilize DHIS2 is crucial for ensuring successful implementation and sustained usage. This study aimed to assess the intention to use DHIS2 and identify associated factors among health professionals in health centers of Bahir Dar Metropolitan City, Ethiopia, in 2022.

Methods

An institutional-based cross-sectional study was conducted involving 368 randomly selected health professionals from health centers in Bahir Dar City, Ethiopia, between 24 May and 24 June 2022. Data were collected using a structured, self-administered questionnaire. Completed questionnaires were entered and coded in EpiData version 4.6 and exported to SPSS version 25 for cleaning and statistical analysis. Descriptive statistics and bivariate and multivariable logistic regression analyses were performed. Model fitness was assessed using the Hosmer–Lemeshow goodness-of-fit test, with statistical significance set at a p-value < 0.05 and a 95% confidence interval.

Results

A total of 342 participants completed the study, resulting in a response rate of 92.9%. The sample included 176 (51.5%) women, of whom 147 (43%) were nurses. Nearly two-thirds (65.2%) of health professionals expressed an intention to use the DHIS2 system. The intention to use DHIS2 was significantly associated with factors including attitude, computer skills, perceived utility, and perceived ease of use.

Conclusion

The findings indicate that attitude, perceived utility, perceived ease of use, and computer skills significantly influence the intention to utilize DHIS2. Therefore, it is imperative to implement targeted interventions before system rollout, including practice-based training, fostering positive attitudes, and enhancing knowledge of the system's usability and functionality to improve the adoption of the district health information system.
First spawning record of the widespread Indo-Pacific Pavona maldivensis observed in the Red Sea
Authors: Garcias-Bonet Neus , Casartelli Marco , Vimercati Silvia , Benzoni Francesca , Peixoto Raquel S.
Published: February 2025

Information on coral reproductive biology and coral spawning times is crucial to advance basic and applied research and inform strategies for coral reef conservation and restoration. Important efforts have been made to collate coral spawning times and reproductive patterns in global and regional datasets. Here, we report and document the first in situ spawning of Pavona maldivensis Gardiner, 1905, observed in the Red Sea. A medium size colony was observed releasing sperm on the full moon night on 23 May 2024, at sunset time. Our observations suggest that the widespread Indo-Pacific P. maldivensis is likely gonochoric. This first report on the in situ spawning timing for P. maldivensis contributes to expanding coral spawning databases and provides valuable data on its reproductive biology, which is relevant for coral restoration and conservation efforts.
Liver transcriptome analysis reveals the molecular response to hibernation challenge in the Chinese soft-shelled turtle (Pelodiscus sinensis)
Authors: Iqbal Muhammad Shahid , Ai Xiaoqi , Zhu Qingjun , Khan Ijaz , Ali Zeeshan , Lan Tian , Ding Li , Hong Meiling
Published: February 2025

Hibernation is a physiological strategy animals use to survive in hostile environments with extreme temperature challenges and food scarcity. During this state, significant changes occur in metabolism and cellular function, with numerous stress response pathways recalibrated to survive physiological challenges that could otherwise be fatal. Numerous studies were performed to explain the molecular mechanisms of mammalian hibernation, but detailed analyses remain scarce in reptiles. Given the limited understanding of the mechanisms regulating hibernation, we performed a comprehensive analysis of liver gene expression in the Chinese softshell turtle (Pelodiscus sinensis) comparing summer active (SA), hibernation (H), and early arousal (EA) states using RNA-sequencing. A total of 435 million high-quality reads were generated, identifying 3,508, 3,607, and 2,993 differentially expressed genes (DEGs) in the SA vs. H, H vs. EA, and EA vs. SA respectively. Gene ontology analysis revealed a shift in metabolic fuel utilization, with the down-regulation of metabolic and cellular processes during hibernation, reflecting a conserved strategy for energy conservation. The transition from hibernation to early arousal was marked by up-regulation of immune-related genes (e.g., CXCL12, ITGA4, PIGR) and endocrine regulators (e.g., CDKN1A, DLL4, IGF1R), facilitating metabolic recovery and cellular protection. Besides, we observed dynamic changes in carbohydrate and lipid metabolism, with down-regulation of hexokinase 2 (HK2) and glucose transporters during hibernation, and up-regulation of lipid metabolism genes (LSS, GPLD1) to support membrane integrity and signaling. Our findings provide insights into the molecular mechanisms underlying hibernation and arousal in ectotherms, with implications for understanding metabolic adaptations, immune regulation, and stress responses in extreme conditions.
A mass spectrometry-based strategy for investigating volatile molecular interactions in microbial consortia: unveiling a Fusarium-specific induction of an antifungal compound
Authors: Azzollini Antonio , Sgorbini Barbara , Lecoultre Nicole , Bicchi Carlo , Wolfender Jean-Luc , Rubiolo Patrizia , Gindro Katia
Published: February 2025

Co-cultivation of microorganisms has emerged as a promising methodology for deciphering the intricate molecular interactions between species. This approach facilitates the replication of natural niches of ecological or clinical relevance where microbes consistently interact. In this context, increasing attention has been addressed toward elucidating the molecular crosstalk within fungal co-cultures. However, a major challenge in this area of research is determining the fungal origin of metabolites induced in co-cultivation systems. Molecules elicited in co-cultures may not be detectable in the individual cultures, making it challenging to establish which microorganism is responsible for their induction. For agar-diffused metabolites, imaging mass spectrometry can help overcome this obstacle by localizing the induced molecules during fungal confrontations. For volatile metabolites, however, this remains an open problem. To address this issue, in this study, a three-head-to-head co-culture strategy was developed, specifically focusing on the exploration of volatile interactions between fungi via headspace solid-phase microextraction combined with gas chromatography mass spectrometry. This methodology was applied to study the volatile molecular interactions of three fungal species: Fusarium culmorum, Aspergillus amstelodami, and Cladosporium cladosporioides. The adopted strategy revealed a Fusarium-specific induction of three volatile molecules: γ-terpinene and two unidentified sesquiterpene compounds. Interestingly, γ-terpinene showed antifungal activity in a bioassay against the other two fungal species: Aspergillus amstelodami and Cladosporium cladosporioides. The proposed methodology could help to investigate volatile molecular interactions and highlight metabolite induction specific to a particular fungus involved in in vitro fungal confrontations. This is relevant for a better understanding of the complex biosynthetic responses of fungi in consortia and for identifying volatile molecules with antifungal activity.
Cardiac energy metabolic disorder and gut microbiota imbalance: a study on the therapeutic potential of Shenfu Injection in rats with heart failure
Authors: Zhao Zhenyu , Hu Zhixi , Li Lin
Published: February 2025

Objective

To investigate the relationship between heart failure (HF) and gut microbiota-mediated energy metabolism, and to explore the role of Shenfu Injection in this process.

Materials and methods

In this study, Adriamycin-induced chronic heart failure (CHF) rat model was used and randomly divided into the blank control group (Normal, n = 9), HF control group (Model, n = 12), Shenfu Injection treatment group (SFI, n = 9), and positive drug control group (TMZ, n = 9). The changes in gut microbiota structure were analyzed by 16S rRNA high-throughput sequencing, the content of short-chain fatty acids (SCFAs) was detected by targeted metabolomics technology, and cardiac function and energy metabolism-related indicators were evaluated.

Results

Myocardial energy metabolism in HF rats was disordered, characterized by reduced fatty acid oxidation, enhanced anaerobic glycolysis of glucose, mitochondrial damage, and decreased ATP content; The gut microbiota of HF rats was imbalanced, with a reduction in beneficial bacteria, an increase in conditional pathogenic bacteria, and impaired intestinal barrier function; Both Shenfu Injection and trimetazidine improved myocardial energy metabolism and cardiac function, but Shenfu Injection was more significant in regulating gut microbiota and improving intestinal health; The production of SCFAs from the gut microbiota of HF rats increased, which may be closely related to myocardial energy metabolism; SCFAs-producing bacteria Akkermansia and Blautia played a key role in the development of HF, and their abundance was positively correlated with SCFAs content.

Conclusion

Shenfu Injection in treating HF may improve myocardial energy metabolism and intestinal health by regulating gut microbiota, especially the abundance of SCFAs-producing bacteria Akkermansia and Blautia, thereby exerting therapeutic effects. This provides theoretical support for treatment strategies based on gut microbiota.
SATB1 in cancer progression and metastasis: mechanisms and therapeutic potential
Authors: Bai Jinping , Yang Gege , Yu Qi , Chi Qianya , Zeng Xianlu , Qi Wenjing
Published: February 2025

Cancer remains a major global health challenge, with prostate cancer, lung cancer, colorectal cancer, and breast cancer accounting for nearly half of all diagnoses. Despite advancements in cancer treatment, metastasis to distant organs continues to be the leading cause of cancer-related mortality. The progression of cancer involves the alteration of numerous genes, with dynamic changes in chromatin organization and histone modifications playing a critical role in regulating cancer-associated genes. Special AT-rich sequence-binding protein 1 (SATB1), a critical chromatin organizer, plays a pivotal role in cancer progression by regulating gene expression, chromatin remodeling, and cell signaling pathways. SATB1 binds to AT-rich DNA sequences, acting as a scaffold for chromatin-modifying enzymes and transcription factors, thus coordinating the regulation of extensive gene networks. Its overexpression has been implicated in a wide range of cancers and is associated with poor prognosis, aggressive tumor phenotypes, and enhanced epithelial–mesenchymal transition (EMT). Moreover, SATB1’s activity is modulated by microRNAs (miRNAs) and post-translational modifications, further contributing to its complex regulatory functions. Given its crucial involvement in cancer progression and metastasis, SATB1 has emerged as a promising target for novel therapeutic strategies. This review delves into the molecular mechanisms of SATB1 in cancer and explores potential therapeutic approaches for targeting this key regulator in cancer treatment.
Developing a strategic action plan for reducing the burden of stroke in Africa: report of the first African Stroke Leaders' Summit
Authors: Akinyemi Rufus , Olowoyo Paul , Jones Stephanie , Adeniji Olaleye , Ogunde Gabriel , Spencer Joseph , Abd-Allah Foad , Akpalu Albert , Lightbody Liz , Yaria Joseph , Sarfo Fred S. , Naidoo Pamela , Belson Sarah , Ebenezer Ad Adams , Nasreldein Ahmed , Makanjuola Akintomiwa , Saylor Deanna , Zimba Stanley , Ojewale Lucia , Youkee Daniel , Adoukonou Thierry , Okekunle Akinkunmi , Anyanwu Benjamin , Okubadejo Njideka , Bateman Kathleen , Melifonwu Rita , Obiako Reginald , Arulogun Oyedunni , Wahab Kolawole W. , Adebayo Philip , Francis Patty , Ossu-Nguiet Paul , Charway-Felly Augustina , Ogbole Godwin , Ogun Shamsideen , Walker Richard , Gebreyohanns Mehari , Langhorne Peter , Norrving Bo , Ovbiagele Bruce , Kalaria Rajesh N. , Ogunniyi Adesola , Watkins Caroline Leigh , Owolabi Mayowa
Published: February 2025

Introduction

Stroke is a leading cause of adult neurologic disability, cognitive decline, and death worldwide, and particularly in Africa. Stroke research in Africa has exposed challenges militating against the translation of research evidence into practice and policy. The evidence-based, context-sensitive multilevel strategies required to surmount these challenges are presented in this report on the first African Stroke Leaders' Summit (ASLS) organized to tackle the burden of stroke in Africa.

Methods

The Africa–UK Stroke Partnership (AUKSP) Project had a Steering Committee (SC) and four theme-based Working Groups (WGs): stroke services, stroke training/capacity building, research and stroke advocacy, each with defined terms of reference. These groups generated 20 priorities (five per thematic area) during breakout sessions at the first ASLS which were further refined into four topmost priorities (one per thematic area) at the general consensus session.

Results

The topmost priorities included promoting the development of acute stroke services (stroke services), strengthening population-based stroke education focusing on prevention and symptom recognition (stroke training), research on hypertension control to reduce stroke risk (stroke research), and developing national stroke action plans (advocacy).

Conclusion

Sustained reduction of stroke burden in Africa requires the adaptation of best practices to the African context, building the capacity of African stroke care professionals and using available resources with political support. Improving stroke literacy in African communities is a complementary strategy to reinforce healthy lifestyle choices and improve screening and detection of hypertension and other modifiable stroke risk factors. This process will culminate in a strategic African Stroke Action Plan (ASAP), the blueprint for the control of stroke in Africa.
Identification of the Aeroacoustic Emission Source Regions Within a Ceiling Swirl Diffuser
Authors: Ostmann Philipp , Kremer Martin , Müller Dirk
Published: February 2025

The acoustic emissions of ventilation systems and their subcomponents contribute to the perceived overall comfort in indoor environments and are, therefore, the subject of research. In contrast to fans, there is little research on the aeroacoustic properties of air diffusers (often referred to as outlets). This study investigates a commercially available ceiling swirl diffuser. Using a hybrid approach, a detailed three-dimensional large-eddy simulation is coupled with a perturbed wave equation to capture the aeroacoustic processes within the diffuser. The flow model is validated for the investigated operating point of 470 m3/h using laser-optical and acoustic measurements. To identify the noise sources, the acoustic pressure is sampled with various receivers and on cut sections to evaluate the cross-power spectral density, and the sound-pressure level distribution on cut sections is evaluated. It is found that the plenum attenuates the noise near its acoustic eigenmodes and thus dominates other noise sources by several orders of magnitude. By implementing the plenum walls as sound-absorbing, the overall sound-pressure level is predicted to decrease by nearly 10 dB/Hz. Other relevant geometric features are the mounting beam and the guide elements, which are responsible for flow-borne noise emissions near 698 Hz and 2699 Hz, respectively.
Village-Owned Enterprises Perspectives Towards Challenges and Opportunities in Rural Entrepreneurship: A Qualitative Study with Maxqda Tools
Authors: Putra Imam Radianto Anwar Setia , Wibowo Radna Andi , Purwadi  , Andari Tania , Asrori  , Christy Nisa Novia Avien , Santoso Catur Wibowo Budi , Harefa Herman Yaarozatulo , Suryawardana Edy
Published: February 2025

The Village Fund program was started by the Indonesian government in 2015 and had a budget of USD 19.14 billion for the years 2015–2019. This research aims to provide novel insights into the importance of village-owned enterprises (BUMDes) in promoting rural entrepreneurship in rural areas of Indonesia. The investigation employs an approach that specifically emphasizes qualitative data. The individuals under investigation include the Director of the Office for Community Empowerment, Village, Population, and Civil Registration (Dispermadesdukcapil), along with five administrators/managers from BUMDes. In the “Synergy and Involvement” category, the results suggest that BUMDes are more inclined to collaborate with Small and Medium-sized Enterprises (SMEs) and other BUMDes at a similar or slightly higher level in their organizational structure rather than with large-scale companies. This is due to the fact that SMEs and other BUMDes are more inclined to have a strong and interconnected bond with each other.
The Impact of Work–Family Conflict and Burnout on Satisfaction and Turnover Intentions Across a Middle Eastern and a European Country
Authors: Tavassoli Tara , Sunyer Albert
Published: February 2025

This study investigates the role of work–family conflict (WFC), family–work conflict (FWC), and two dimensions of burnout (emotional exhaustion and cynicism) in mediating the relationships between work demands and job satisfaction, life satisfaction, and turnover intention across a Middle Eastern country and a European country. The study uses two samples including 263 full-time employees from both countries. The quantitative analysis using structural equation modeling (SEM) revealed that higher levels of work–family conflict (WFC), and family–work conflict (FWC) were associated with lower levels of job satisfaction and life satisfaction. Additionally, burnout showed negative effects on job and life satisfaction, and a positive relationship with turnover intentions across nations. Differences were also found between country samples, with employed women from the Middle Eastern country experiencing higher dual-role conflict and lower satisfaction.
Potato Disease and Pest Question Classification Based on Prompt Engineering and Gated Convolution
Authors: Tang Wentao , Hu Zelin
Published: February 2025

Currently, there is no publicly available dataset for the classification of potato pest and disease-related queries. Moreover, traditional query classification models generally adopt a single maximum-pooling strategy when performing down-sampling operations. This mechanism only extracts the extreme value responses within the local receptive field, which leads to the degradation of fine-grained feature representation and significantly amplifies text noise. To address these issues, a dataset construction method based on prompt engineering is proposed, along with a question classification method utilizing a gated fusion–convolutional neural network (GF-CNN). By interacting with large language models, prompt words are used to generate potato disease and pest question templates and efficiently construct the Potato Pest and Disease Question Classification Dataset (PDPQCD) by batch importing named entities. The GF-CNN combines outputs from convolutional kernels of varying sizes, and after processing with max-pooling and average-pooling, a gating mechanism is employed to regulate the flow of information, thereby optimizing the text feature extraction process. Experiments using GF-CNN on the PDPQCD, Subj, and THUCNews datasets show F1 scores of 100.00%, 96.70%, and 93.55%, respectively, outperforming other models. The prompt engineering-based method provides a new paradigm for constructing question classification datasets, and the GF-CNN can also be extended for application in other domains.