bluuebunny/crossref_metadata_2025 huggingface dataset:
ШТУЧНІ РИФИ ДЛЯ ПІСЛЯВОЄННОГО ВІДНОВЛЕННЯ ЛИМАННИХ АКВАТОРІЙ МИКОЛАЇВЩИНИ
Authors: ГРУБИЙ Микола , ТРОХИМЕНКО Ганна
Published: May 2024

Розглянуто необхідність відновлення біорізноманіття у лиманах завдяки встановленню штучних рифів. Проведено дослідження евтрофікації Березанського, Дніпро-Бузького та Тилігульського лиманів за допомогою космічних знімків. Проаналізовано та запропоновано конструкцію штучних рифів – рифових куль, яку буде встановлено у визначених місцях Тилігульського лиману.
ВПЛИВ ВИХІДНИХ СПОЛУК НА ФОРМУВАННЯ НАНОРОЗМІРНИХ ЧАСТИНОК ОРТОФЕРИТІВ ІТРІЮ І ЛАНТАНУ
Authors: ЛАВРИНЕНКО Олена , ПАВЛЕНКО Олеся , ОЛІФАН Олена
Published: May 2024

Завдяки сукупності унікальних електричних, магнітних та оптичних властивостей ортоферити рідкісноземельних елементів (РЗЕ) широко використовуються при створенні ряду функціональних матеріалів технічного призначення – електродів, скла, паливних елементів, фотокаталізаторів, світло-випромінюючих і лазерних матеріалів, тощо. Застосування хімічного синтезу ортоферитів РЗЕ може призводити до формування двофазних систем перовськіт – оксид феруму або РЗЕ. Для запобігання формуванню другої фази використовують кілька стратегій, зокрема, введення в систему допоміжних речовин, наприклад, сечовини, проведення процесу синтезу при перетворенні цитратних комплексів або комплексних солей відповідних металів. В роботі показано, що використання в якості джерела феруму гексаціаноферату калію та додавання розчину сечовини при хімічному синтезі дає змогу отримати гомогенні структури ортофериту лантану з розміром первинних частинок (ОКР) 22,5 нм і ортофериту ітрію з ОКР 18,7 нм. Частинки ортоферитів характеризуються сферичною формою та нанометровими розмірами. Показано, що на склад, морфологію та дисперсність порошків ортоферитів впливає не тільки склад вихідних металовмісних сполук, а також склад допоміжних речовин, які дають змогу регулювати швидкість гідролізу, процеси зародкоутворення та осадження гідроксидів.
ПОЄДНАННЯ КОМПЛЕКСОУТВОРЕННЯ З МЕМБРАННОЮ ОЧИСТКОЮ ВОДИ ВІД ІОНІВ КОБАЛЬТУ(ІІ)
Authors: РОМАНЮКІНА Ірина , ЮРЛОВА Людмила , ІВАЩЕНКО Владислав
Published: May 2024

На сьогоднішній день проблема забруднення навколишнього природного середовища не лише не вирішена, але й з кожним роком стає все гострішою. Одним з найнебезпечніших важких металів є кобальт. Кількість джерел забруднення іонами Со(ІІ) в Україні та у світі зростає. Консервативні методи очистки води від іонів кобальту мають свої недоліки, для підвищення їх економічності вчені пропонують комбіновані підходи. Перспективним для вилучення іонів кобальту (ІІ) із забруднених вод є поєднання процесу комплексоутворення з баромебранним розділенням. Показано, що використання поліакриламіду та поліетиленіміну підвищує ефективність баромембранної очистки води від іонів Со(ІІ).
ЗАСТОСУВАННЯ ЗАЛІЗОВМІСНОГО ГІДРОЗОЛЮ ДЛЯ ВЛОВЛЮВАННЯ CO2
Authors: БИЧКО Ігор , ТРИПОЛЬСЬКИЙ Андрій , КОВБАСЮК Вікторія
Published: May 2024

Досліджено здатність серії зразків суспензії оксидів/гідроксидів заліза з комерційною назвою ferryferrohydrosol (FFH), яка використовується для очищення стічних вод, поглинати CO2 з концентрованих вихлопних газів. Методами DLS FTIR та Raman-spectra показано, що FFH складається із суспензії залізовмісних наночастинок, які є сумішшю оксидів та гідроксидів Fe2+ та Fe3+. Ці наночастинки агломеровані у більші частинки розміром у декілька мікрометрів. Основними кристалічними фазами цих частинок є маггеміт, гематит і магнетит зі значним вмістом у гідратованих формах. Зразки FFH мають розвинену поверхню в межах 200-400 м2/г. Показано, що поглинальна здатність CO2 становить 0,26 г(CO2)/г(Fe) при кімнатній температурі.
ОЦІНКА ЕФЕКТИВНОСТІ ІОНООБМІННОГО ВИЛУЧЕННЯ ІОНІВ ЗАЛІЗА З КИСЛИХ СТОКІВ ГАЛЬВАНІЧНИХ ВИРОБНИЦТВ
Authors: ІВАНЕНКО Олена , ДОВГОЛАП Сергій , НОСАЧОВА Юля , ВЕРЕЩУК Тетяна
Published: May 2024

В роботі описано проблеми утилізації та переробки стічних вод від гальванічного виробництва, що містять в своєму складі іони заліза.З поміж всіх існуючих методів очищення було обрано найбільш ефективний іоннобмінний метод. В ході досліджень в якості сорбційного матеріалу було обрано сильнокислотну катіонообмінну смолу Dowex HCR S/S в Na+-формі. Процеси сорбції іонів заліза (ІІ) проводили в динамічних умовах та при різних концентраціях сірчаної кислоти. Вибір сильнокислотного катіоніту обумовлений тим, що обмінна ємність сильнокислотних катіонітів майже не залежить від рН. Проте, експериментальні дослідження показали, що зі збільшенням концентрації сірчаної кислоти повна обмінна динамічна ємність катіоніту суттєво зменшується при сорбції іонів заліза. Проте збільшення концентрації іонів заліза призводила до збільшення ефективності досліджуваного методу. Значною перевагою іонногообміну над іншими методами була можливість ефективної регенерації катіонообмінного матеріалу 5-ти та 10 %-ти розчинами сірчаної кислоти.
ОТРИМАННЯ ТРАНСГЕННИХ КОРЕНІВ S. ALTISSIMA L. ТА S.ALBIDA L. ДЛЯ НАКОПИЧЕННЯ ВИСОКОГО ВМІСТУ ФЛАВОНОЇДІВ.
Authors: КОЩАВКО Ксенія , ЛУЧАКІВСЬКА Юлія , КОВАЛЬ Інна
Published: May 2024

Робота була спрямована на отримання трансгенних коренів двох видів роду Scutellaria: S. albida, S. altissima, та порівняти накопичення флавоноїдів у рослин вирощених в умовах in vitro та трансгенних корені рослин роду Scutellaria. У результаті проведених досліджень було виявлено достовірно більш високий вміст флавоноїдів для культури Ri-коренів, ніж для коренів рослин вирощених в умовах in vitro рослин S. altissima. Отже,культуру трансгенних коренів виду Scutellaria altissima L. можна вважати фармакологічно перспективною.
ВПЛИВ ДОДАВАННЯ РІЗНОЇ КІЛЬКОСТІ NACL В СЕРЕДОВИЩЕ КУЛЬТИВУВАННЯ БАКТЕРІЙ НА ШВИДКІСТЬ РОЗВИТКУ КОЛОНІЙ BACILLUS THURINGIENSIS.
Authors: ФОМЕНКО Анастасія , БОНДАРЕНКО Оксана
Published: May 2024

У роботі було проведено дослідження впливу внесення домішки солі NaCl у щільне середовище (МПА) для культивування Bacillus thuringiensis - одного з видів ґрунтових бактерій, що має широкий попит у сільськогосподарській галузі, оскільки використовується для виробництва препаратів пестицидної дії. Показано, що додавання невеликих доз солей дає можливість забезпечити пошвидшення розвитку колоній культури при мінімальних витратах. Виявлену властивість реагування бактерії на додавання солі можна використовувати при виробництві вищезгаданих пестицидів.
МОЖЛИВИЙ ВНЕСОК МОРСЬКОГО ЦИВІЛЬНОГО ТРАНСПОРТУ У ЗНИЖЕННЯ ВУГЛЕЦЕВИХ ВИКИДІВ ДО 2050 РОКУ
Authors: ЛАНЕЦЬКИЙ Марк , АГЕЄВАС Лаурінас
Published: May 2024

В роботі описано дослідження можливості масового переходу океанських транспортних кораблів із двигунів внутрішнього згоряння (дизилів) на водневі та атомні рухові установки. Така потреба обумовлена потребою знижувати викиди СО2 згідно з Паризьким кліматичним договором та прийнятою стратегією зниження викидів Євросоюзом. Введення додаткових податків на "вуглецевий слід" сильно вдарить по логістичних компаніях та їх клієнтам та стимулюватиме морські логістичні лінії інвістувати у будівництво нових коробок з екологічними двигунами.
Analisis efisiensi pengelolaan Dana Alokasi Umum Kabupaten atau Kota di Pulau Kalimantan
Authors: Devi Utami Rika Safitri  , Widarjono Agus
Published: May 2024

Purpose – This study aims to analyze the efficiency levels in managing the General Allocation Fund in regencies and cities for the purpose of equalizing financial capacity in the endeavor of human development in Kalimantan Island.Methods – Two testing models, namely Data Envelopment Analysis (DEA) and Panel Data Regression Model, were employed on 56 regencies and cities in Kalimantan Island with the primary variable being the General Allocation Fund absorption reports from 2018 to 2022.Findings – The majority of regencies and cities in Kalimantan Island have managed the General Allocation Fund with relatively high-efficiency levels, ranging from 0.86 to 0.98. Regression analysis indicates that Gross Regional Domestic Product has a significant influence on the regression outcome. On the other hand, Regional Original Revenue exerts a less significant effect, while the Poverty Percentage holds a significant negative impact. The panel test results demonstrate that the Fixed Effect (FE) approach is the most suitable model with a remarkably high R-squared value of 0.990803.Implication – In general, regencies and cities in Kalimantan Island have managed the General Allocation Fun efficiently. However, in a policy context, continuous monitoring and evaluation are necessary to ensure optimal utilization of the DAU in supporting regional development.Originality – This study contributes to the evaluation and formulation of optimum values in managing the General Allocation Fund for regencies and cities in Kalimantan Island.
AbstrakTujuan – Menganalisa tingkat efisiensi pengelolaan Dana Alokasi Umum (DAU) Kabupaten/Kota terhadap Pemerataan Kemampuan Keuangan dalam upaya pembangunan manusia di Pulau KalimantanMetode – Terdapat dua model pengujian yakni Data Envelopment Analysis (DEA) dan Model Regresi Data Panel pada 56 Kabupaten/Kota di Pulau Kalimantan dengan variabel utama laporan penyerapan Dana Alokasi Umum (DAU) tahun 2018 sampai 2022.Temuan – Sebagian besar kabupaten/kota di Pulau Kalimantan telah mengelola Dana Alokasi Umum (DAU) dengan tingkat efisiensi yang relatif tinggi, berkisar antara 0.86 hingga 0.98. Analisis regresi menunjukkan bahwa PDRB pengaruh signifikan terhadap hasil regresi. Sedangkan, PAD memiliki pengaruh yang kurang signifikan, sementara Persentase Kemiskinan memiliki pengaruh negatif yang signifikan. Hasil uji panel menunjukkan bahwa pendekatan Fixed Effect (FE) adalah model terbaik dengan nilai R-squared yang sangat tinggi (0.990803). Implikasi – Secara garis besar kabupaten/kota di Pulau Kalimantan telah mengelola DAU secara efisien. Namun, dalam konteks kebijakan, perlu dilakukan pemantauan dan evaluasi untuk memastikan penggunaan DAU yang optimal dalam mendukung pembangunan daerah. Orisinalitas – Penelitian ini berkontribusi dalam mengevaluasi dan memformulasikan nilai optimum dalam pengelolaan Dana Alokasi Umum (DAU) untuk Kabupaten/Kota di Pulau Kalimantan.
Penerapan Model Discovery Learning dengan Media Konkret untuk Meningkatkan Hasil Belajar IPA tentang Perubahan Wujud Benda pada Siswa Kelas VB SD Negeri 5 Panjer Tahun Ajaran 2022/2023
Authors: Nugraheni Laela , Ngatman Ngatman , Chamdani Muhamad
Published: May 2024

Penerapan model dan media pembelajaran yang tepat akan membuat siswa aktif dalam kegiatan pembelajaran. Salah satunya adalah model Discovery Learning dengan media konkret. Penelitian ini bertujuan untuk meningkatkan hasil belajar IPA tentang perubahan wujud benda pada siswa kelas VB SD Negeri 5 Panjer tahun ajaran 2022/2023 melalui penerapan model Discovery Learning dengan media konkret,. Penelitian ini dilaksanakan dengan pendekatan penelitian tindakan kelas kolaboratif di SD Negeri 5 Panjer pada kelas VB dengan siswa sebanyak 24 orang. Data pada penelitian diperoleh dari hasil observasi, wawancara, dan nilai hasil belajar dengan sumber data dari siswa dan guru kelas VB serta teman sejawat. Pengumpulan data menggunakan teknik tes dan nontes. Alat pengumpulan data yaitu lembar observasi, wawancara, dan soal evaluasi. Tenik analisis data yang digunakan yaitu reduksi data, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan ada peningkatan hasil belajar IPA tentang perubahan wujud benda melalui penerapan model Discovery Learning dengan media konkret. Rata-rata persentase hasil belajar pada siklus I = 81,25%, siklus II = 89,59%, dan siklus III = 91,67%. Dengan demikian, dapat disimpulkan bahwa penerapan model Discovery Learning dengan media konkret dapat meningkatkan hasil belajar IPA tentang perubahan wujud benda pada siswa kelas VB SD Negeri 5 Panjer tahun ajaran 2022/2023.

 
Penerapan Model Discovery Learning untuk Meningkatkan Kreativitas Siswa dalam Mata Pelajaran SBdP Materi Gambar Dekoratif Kelas III SD
Authors: Utomo Hasto , Susiani Tri Saptuti , Salimi Moh
Published: May 2024

Indonesia sebagai negara berkembang sangat memerlukan generasi muda yang kreatif sehingga dapat berkontribusi dalam segi pendidikan berupa ilmu pengetahuan, kebudayaan, maupun teknologi yang bermanfaat untuk masyarakat umum. Tujuan dari penelitian ini yaitu: (1) mendeskripsikan penerapan model Discovery Learning untuk meningkatkan kreativitas siswa dalam mata pelajaran SBdP materi gambar dekoratif kelas III SDN 1 Bumurejo tahun ajaran 2022/2023; (2) meningkatkan kreativitas siswa dalam mata pelajaran SBdP materi gambar dekoratif kelas III SDN 1 Bumurejo tahun ajaran 2022/2023; dan (3) mendeskripsikan kendala dan solusi penerapan model Discovery Learning untuk meningkatkan kreativitas siswa dalam mata pelajaran SBdP materi gambar dekoratif kelas III SDN 1 Bumirejo tahun ajaran 2022/2023. Desain penelitian ini adalah penelitian tindakan kelas (PTK) yang dilaksanakan dalam 3 siklus. Hasil penelitian menunjukkan persentase kreativitas siswa pada siklus I = 62,87%, siklus II = 78,12%, dan siklus III = 85,50% yang berarti model Discovery Learning dapat meningkatkan kreativitas siswa dalam mata pelajaran SBdP materi gambar dekoratif kelas III SD.

 
Penerapan Model Pembelajaran Kooperatif Tipe Make a Match dengan Multimedia untuk Meningkatkan Hasil Belajar Bahasa Jawa Materi Aksara Jawa
Authors: Kurniawati Muntafi'ah Risqi , Susiani Tri Saptuti , Ngatman Ngatman
Published: May 2024

Tujuan penelitian ini adalah untuk mendeskripsikan peningkatan hasil belajar Bahasa Jawa materi aksara Jawa siswa kelas III di SD Negeri 1 Karanggadung tahun ajaran 2022/2023 melalui model kooperatif tipe make a match dan multimedia. Penelitian ini merupakan penelitian tindakan kelas kolaboratif yang dilakukan dalam tiga siklus dan lima pertemuan. Teknik pengumpulan data menggunakan observasi, wawancara, dan tes dengan validitas data menggunakan triangulasi teknik dan sumber. Analisis data dilaksanakan melalui reduksi data, penyajian data, dan kesimpulan. Hasil penelitian menunjukan bahwa persentase rata-rata ketuntasan siswa setiap siklus selalu meningkat, yaitu 70,45% pada siklus I, 79,54% pada siklus II, dan 86,36% pada siklus III. Hasil belajar Aksara Jawa meningkat karena adanya perubahan tingkah laku secara posistif pada setiap siklus dari guru dan siswa. Kesimpulan penelitian ini yaitu model kooperatif tipe make a match dengan multimedia dapat meningkatkan hasil belajar bahasa Jawa materi aksara Jawa pada siswa kelas III SD Negeri 1 Karanggadung tahun ajaran 2022/2023.
Penerapan Model Project Based Learning dengan Media Kartu Gambar untuk Meningkatkan Kreativitas Siswa dalam Pembelajaran PPKN Tentang Lambang Negara Garuda Pancasila Pada Siswa Kelas III SDN 2 Sidomukti Tahun Ajaran 2022/2023
Authors: Setiawan Rizki , Suhartono Suhartono , Rokhmaniyah Rokhmaniyah
Published: May 2024

Di era revolusi industri 4.0 guru diharuskan kreatif dalam aspek pembelajaran maupun aspek kehidupan. Untuk itu, diperlukan kreativitas dalam dunia pendidikan agar menghasilkan generasi penerus bangsa unggul. Tujuan dari penelitian ini yaitu: (1) mendeskripsikan penerapan model Project Based Learning untuk meningkatkan kreativitas siswa pada pelajaran PPKn siswa kelas III; (2) mendeskripsikan penerapan model Project Based Learning dapat meningkatkan kreativitas siswa pada pelajaran PPKn siswa kelas III; dan (3) mendeskripsikan kendala dan solusi dalam penerapan model Project Based Learning dalam peningkatan kreativitas siswa pada pelajaran PPKn siswa kelas III. Desain penelitian ini adalah penelitian tindakan kelas (PTK) yang dilaksanakan dalam 3 siklus dengan menggunakan metode diskusi, tanya jawab, penugasan, dan unjuk kerja. Hasil penelitian menunjukkan persentase kreativitas siswa dengan aspek fleksibilitas, originalitas, elaborasi, dan fluensi pada siklus I = 63,64%, siklus II = 79,375%, dan siklus III = 85,51%. Kesimpulan pada penelitian ini yaitu penerapan model Project Based Learning dengan media kartu gambar dapat meningkatkan kreativitas siswa di kelas III SD N 2 Sidomukti tahun ajaran 2022/2023.
Analisis Nilai Kemandirian dalam Buku IPAS Materi IPA Pada Kurikulum Merdeka Fase B
Authors: Lorenza Sovia , Dalifa Dalifa , Agusdianita Neza , Winarni Endang Widi , Yusnia Yusnia
Published: May 2024

Penelitian ini bertujuan untuk mendeskripsikan sajian nilai kemandirian dalam buku panduan guru dan buku pegangan siswa mata pelajaran IPAS materi IPA.Hasil penelitian menunjukkan bahwa pada gaya sajian buku panduan guru diperoleh kemunculan indikator pekerja keras (25%), berani dalam bertindak (16,66%),kreatif (25%),percaya diri (8,33%),menemukan identitas dirinya (16,66%),dan dapat mengambil keputusan sendiri (8,33%).Pada aspek pola sajian buku panduan guru diperoleh kemunculan indikator pekerja keras (21,15%), berani dalam bertindak (11,53%),kreatif (19,23%), percaya diri (26,92%), berkeinginan sesuatu tanpa bantuan orang lain (4%),menemukan identitas dirinya (2%),dapat mengambil keputusan sendiri (7,70%) dan memiliki daya tahan terhadap tantangan (7,70%).Pada pola sajian buku pegangan siswa diperoleh kemunculan indikator pekerja keras (23,07%),memiliki daya tahan terhadap tantangan (9,62%),berani dalam bertindak (1,92%), kreatif (25%),percaya diri (26,92%), dan dapat mengambil keputusan sendiri (13,46%).Dapat disimpulkan nilai kemandirian muncul melalui kemunculan indikator
Penerapan Pendekatan Keterampilan Proses Dalam Upaya Meningkatkan Motivasi dan Hasil Belajar Mata Pelajaran IPA Peserta Didik Kelas V SD Negeri Tridadi
Authors: Nurhayati Nurhayati , Ngazizah Nur , Anjarini Titi
Published: May 2024

Penelitian ini merupakan Penelitian Tindakan Kelas. Penelitian dilakukan melalui 4 tahapan  yaitu perencanaan, pelaksanaan, pengamatan, dan refleksi. Subjek pada penelitian ini seluruh peserta didik kelas VSD Negeri Tridadi yang berjumlah 24. Teknik analisis data menggunakan teknik kualitatif dan kuantitaif. Pengumpulan data dengan tes dan angket. Hasil penelitian menyatakan bahwa terjadi peningkatan motivasi dan hasil belajar peserta didik SDN Tridadi. Hal ini dibuktikan dengan persentase motivasi pada siklus I sebesar 55,15%, dan persentase hasil belajar sebesar 12,5%. Pada aspek motivasi belajar peserta didik meningkat yakni dari 55,15% menjadi 73,2%, dan ketuntasan hasil belajar IPA meningkat dari 12,5% menjadi 41,6%. Pada siklus II, kualitas pembelajaran mendapat rata-rata 33,92 dengan kategori baik. Pada aspek motivasi belajar meningkat dari 73,2% menjadi 92,18%, dan ketuntasan hasil belajar IPA meningkat dari 41,6% menjadi 87,5%. Oleh karena itu, dapat disimpulkan bahwa pendekatan keterampilan proses dapat meningkatkan motivasi dan hasil belajar peserta didik kelas V SD N Tridadi.
IMPLEMENTATION IN SСAS KIDYM OF SOFTWARE DETERMINATION OF DIMENSIONS OF UNKNOWNS IN PROBLEMS OF MECHANICS BASED ON ENERGY RELATIONS
Authors: Andrieiev Yuriy Mykhailovych , Shabanov Hennadii Viktorovich
Published: May 2024

The paper presents the results of the study of an algorithm for processing measurement units of physical and geometric quantities in the problems of mechanics implemented in the specialized computer algebra system (SCAS) KiDyM. The KiDyM software complex is used for solving problems of mechanics of engineering and scientific orientation of any complexity. For the completeness of the initial data preparation process for such tasks, the use of measurement units in the initial and resulting data is essential. The output data of KiDyM tasks have a rather slow appearance due to their ana- lytical form. To provide assistance to the user, KiDyM programs have a special diagnostic block of output data. Therefore, the implementation of the dimensions used in KiDyM data pursues the additional goal of increasing the diagnostic capabilities of the system. Dimensional formulas are imple- mented here as ordinary analytical expressions, which enables the built-in computer algebra system to form expressions of data measurement units during their computer analytical transformations in the process of solving problems of dynamics, statics and kinematics. Thus, working out the meas- urement units in the SCAS KiDyM includes reading the values of the variables with the dimensions specified in formula form the initial data, diagnos- ing the correctness of dimensionising and compliance of the dimensions with the data, storing them in instances of the "variable" and "element" classes, calculating the dimensions according to data conversion formulas to obtain calculation results. The paper demonstrates how to efficiently es- tablish dimensions of geometrical and physical quantities using energy relations between coordinates and characteristics of elements of the mechanical model. For the demonstration of the logic of the implemented algorithm, simple compact examples from educational problems of kinematics, statics, and dynamics of flat and spatial systems are provided. The article shows how KiDyM constructs the necessary equations for solving tasks, and how units of measurement for equation components and their solutions can be obtained. Since dimensions are represented as formulas here, their simplifica- tion – reduction and substitution with derivative units – can be easily implemented. Moreover, since the variables involved in dimension formulas and the variables of the task itself, within KiDyM, are situated in different data spaces, they can have the same names without any confusion.
IMPACT OF SOLID BOUNDARIES AND VISCOSITY OF THE MEDIUM ON THE CONTRIBUTION OF THE INERTIAL AND VORTEX COMPONENTS OF THE NORMAL FORCE OF A ROTATING PLATE. PART 2
Authors: Shekhovtsov Alexander Vladimirovich
Published: May 2024

Within the framework of the improved method of discrete vortices, generalized for viscous media, a method has been developed for determining the contribution of forces of inertial, vortex and circulation nature to the normal force of a plate moving in a stationary viscous boundless medium accord- ing to an arbitrary law, in the presence of a wall and in a channel. The developed method was tested for the case of instantaneous angular start of the plate and subsequent constant angular speed of rotation (Wagner's problem) in a viscous boundless medium, in the presence of a wall and in a channel, in laminar and turbulent modes. The application of approximate analytical formulas for the components of the induced velocity from a discrete vortex in a viscous medium near the wall and in the channel made it possible to obtain velocity fields that visualize two vortices separated from the edges of the plate and the dynamics of their dispersion in laminar and turbulent regimes of rotation of the plate near the wall and in the channel. The inertial- vortical nature of the normal force of the plate (with the dominance of inertial forces) is confirmed, which rotates after an instantaneous start with the separation of the flow from both its edges, regardless of the presence of solid boundaries and laminar or turbulent flow regimes. It was found that in the case of the laminar regime, the effect of the presence of the wall on the reduced inertial component of the normal force of the plate is insignificant, but the influence of the channel leads to a faster departure of the laminar vortex from the moving edge of the plate, which leads to a gradual increase in the contribution of the inertial component of the normal force of the plate up to 100 % and more when turning the plate perpendicular to the channel walls. Approximately the same happens in the case of the absence of solid boundaries, when a turbulent vortex of a larger size and intensity than the corresponding laminar one moves away from the moving edge of the plate.
DIGITALISATION OF PRICING METHODS TO DETERMINE THE OPTIMAL PRICE
Authors: Vasyltsova Svitlana , Hasiuk Maksim
Published: May 2024

The article discusses modern approaches to pricing in the context of digital business transformation. The author discusses the impact of artificial intelligence, dynamic pricing and personalisation on the development of optimal pricing strategies. The article reveals how machine learning algorithms allow businesses to effectively analyse large amounts of data and accurately predict market trends. Focusing on dynamic pricing, in the context of the digital environment, it is revealed as a strategy that allows companies to respond quickly to changing market conditions and effectively adapt prices to demand and competition in real time. A specific feature of the article is the analysis of the impact of personalisation on price offers. Taking into account the individual needs and buying habits of customers allows businesses to create unique pricing strategies that increase customer loyalty and satisfaction. Personalisation of price offers and experimentation with different strategies are also identified as key factors in optimising pricing. This article serves as an important reference for those seeking to understand how digital tools are shaping a new approach to effective pricing management in today's business environment. Overall, the digitalisation of marketing pricing methods not only ensures greater accuracy and efficiency in pricing, but also opens up new opportunities for businesses to adapt to changing market conditions and meet individual customer needs. Businesses can use digital platforms to hold auctions or listings for their goods or services. This not only creates competition among buyers, but also allows them to effectively determine the optimal price based on real demand. The digital transformation in marketing pricing opens up new opportunities for businesses to determine the optimal price of goods. The use of analytics, personalisation, dynamic pricing and other digital tools allows businesses to maximise profits by adapting to rapidly changing market conditions. The development of digital pricing strategies is setting a new standard for effective pricing management, allowing companies to remain competitive in today's digital business environment.
Pelatihan Perencanaan Keuangan Digital: Meningkatkan Literasi di SMK Negeri 1 Karang Tengah
Authors: Despinur Dara  , Effendi Mohammad Sofwan , Widyastuti Umi , Dara Despinur
Published: May 2024

This study focuses on financial literacy training using the financial planning application aturduit.id for teachers, staff, and students at SMK Negeri 1 Karang Tengah, Cianjur, West Java. The objectives were to improve understanding and effective financial management, support entrepreneurial aspirations, and develop financial record-keeping skills. The training method was conducted online via Zoom in July 2023 with the participation of 54 participants. The materials presented included the basics of financial literacy and digital finance. As a result, participants showed an increased understanding of financial concepts, average daily use of financial technology in teachers, staff and students by 27%, and skills in accurate financial recording in teachers, staff and students by 26% on average. The implications of this training indicate that the adoption of the aturduit.id application contributes significantly to improving financial literacy. It is recommended to continue similar training and conduct long-term impact evaluation to strengthen financial literacy and support better financial goals
 
Abstrak
Studi ini fokus pada pelatihan literasi keuangan menggunakan aplikasi perencanaan keuangan aturduit.id untuk guru, staf, dan siswa di SMK Negeri 1 Karang Tengah, Cianjur, Jawa Barat. Tujuannya adalah untuk meningkatkan pemahaman dan pengelolaan keuangan yang efektif, mendukung aspirasi kewirausahaan, dan mengembangkan keterampilan pencatatan keuangan. Metode pelatihan dilaksanakan secara daring via Zoom pada Juli 2023 dengan partisipasi 54 peserta. Materi yang disajikan meliputi dasar-dasar literasi keuangan dan keuangan digital. Hasilnya, peserta menunjukkan peningkatan pemahaman tentang konsep keuangan, penggunaan teknologi keuangan sehari-hari rata-rata pada guru, staf dan siswa sebesar 27%, dan keterampilan dalam pencatatan keuangan yang akurat pada guru, staf dan siswa rata-rata sebesar 26 %. Implikasi dari pelatihan ini mengindikasikan bahwa adopsi aplikasi aturduit.id berkontribusi signifikan terhadap peningkatan literasi keuangan. Disarankan untuk melanjutkan pelatihan serupa dan melakukan evaluasi dampak jangka panjang untuk memperkuat literasi keuangan dan mendukung tujuan keuangan yang lebih baik.
Exploring Factors Influencing Reading Comprehension Beyond Habits in Students
Authors: Putra Raeyen Anggara , Taufiq Wahyu
Published: May 2024

This study investigates how students' reading habits impact their reading comprehension. Using a quantitative survey method with questionnaires and tests, data was collected and analyzed with SPSS. Results showed no significant correlation between students' reading habits and comprehension, suggesting other factors are at play. The study recommends schools implement dedicated literacy time to enhance critical thinking, vocabulary, and overall reading motivation, thereby improving comprehension.
 
Highlight:

Examines reading habits' impact on comprehension.
Uses quantitative research and surveys.
Emphasizes dedicated literacy time.

 
Keywords: Reading habits, Reading comprehension, Quantitative research, Literacy time,Student motivation,
PBL-based E-module Enhances 7th-Grade Cognitive Learning Outcomes
Authors: Az Zakiyah Khadijah , Wulandari Fitria Eka
Published: May 2024

This study explores the impact of a PBL-based e-module on the cognitive learning outcomes of 7th-grade students at SMP Negeri 2 Krembung. Using a quantitative pre-experimental design with a one-group pretest-posttest setup, the research assessed 304 students, with 99 in the sample. A cognitive essay test measured outcomes via valid C1-C6 indicators, and data analysis employed N-Gain and one-way ANOVA methods. Results showed a moderate N-Gain score of 0.4, indicating a positive effect of the e-module. However, the one-way ANOVA indicated no significant difference in outcomes across classes. This study underscores the potential of PBL-based e-modules in enhancing cognitive learning but highlights the need for further exploration regarding outcome variances among classes.
 
Highlight:

PBL and e-modules boost 7th-grade cognitive learning.
Quantitative design, N-Gain show e-module effectiveness.
Research highlights class outcome variations, suggests optimization strategies.

 
Keyword: PBL, e-module, cognitive learning, 7th-grade students, educational impact
"I Don't Feel Hate"
Authors: Hornberger Barbara
Published: May 2024

In (media) popular music, “personas” are usually media personalities. They mainly appear in mass media. As the media landscape has changed over the last 150 years, so have the media appearances of these musician-personalities - from sheet music to radio, records, film, television, music videos and finally YouTube, Instagram and TikTok. Popular music is dominated by stars, media personalities who present a musical performance - but the way this performance is presented has varied historically. In “old” media, record companies had considerable power with regard to access to markets, but also regarding production, marketing and perpetuation of star images. This has changed dramatically with the rise of the internet and various social media platforms. Now potentially everyone has access, everyone can present oneself publicly, everyone can have his or her “15 minutes of fame” (Andy Warhol). The article describes these transformations to the principle of stardom using a case study: the creation of the German entry for the Eurovision Song Contest in Rotterdam 2021. The previously unknown singer Jendrik Sigwart talks about his application on TikTok and in particular about the production of a music video for it. His application on TikTok for one of Europe’s oldest TV events is an interesting moment in media history, in which old narrative strategies mix with new ones.
(INTER)FACING EMPATHY:
Authors: Lauwrens Jenni
Published: May 2024

Screen technologies, ranging from the cinema to the smartphone, are taken for granted in the contemporary screen landscape. This landscape has been referred to as the “screen-sphere” (Sobchack 2014) owing to the fundamental ways screens affect how people understand and relate to the world around them. It is particularly their structural and operative functioning as interfaces that influence not so much how we use screens, but, more importantly, how they affect our communication with and feelings towards others. In so doing, the screen as an interface profoundly transforms people’s capacity for empathy. This article exposes the intersection of the screen and the face of the celebrity persona in an artwork by Candice Breitz titled Love Story (2016). Since the installation focuses attention on the faces of its subjects, it utilises the enormous power of the face in generating empathic responses. More specifically, the face of the celebrity persona cultivates both fascination and empathy in this work. Through a close analysis of this installation, I aim to show how empathy can be controlled and manipulated just as much as it can be compromised due to our screen-based day-to-day practices and our interactions with the faces of others. This article also demonstrates the crucial role that an artwork can play in raising awareness about the consequences of screens on our empathic resonance with others.
INTER(FACING) PERSONAS
Authors: Du Preez Amanda
Published: May 2024

In this introductory essay to the special issue on “Persona and Inter(face)”, the problem of collapsing or imploding inter(faces) is explored. The basic argument is that the inter(face) needs to remain in-between or mediating between face and persona on the one hand, and digital technology on the other hand, for inter(facing) as an encounter to exist. The dilemma of the imploding inter(face) is discussed through the examples of the outdoor mirror selfie and the data-driven persona. By doing so, the politics involved in the dissipation of the mediating gap is exposed. In short: it is proposed that inter(face), as unpacked here, may contribute to future debates and concerns in persona studies.
An updated method on the injectivity of integral operators related to Riemann Hypothesis
Authors: Adam Dumitru
Published: May 2024

With this article that is a reformulation and improvement of [2] and a continuation of [1], we consider the 165 years old Riemann Hypothesis one of the Clay Inst. 'Millennium Problems', a problem solved.

The Alcantara-Bode (1993) equivalence of the Riemann Hypothesis (RH, 1859) consists in the injectivity of a certain Hilbert-Schmidt integral operator, obtained from Beurling equivalent formulation of RH (1955). Both outstanding equivalences reduced RH to a concrete problem solvable by applied math tools.
In dealing with the injectivity of the linear bounded operators on separable Hilbert spaces, the new theorem introduced and its Corollary could be viewed as an extension of our Injectivity Criteria ([1]) simplifying the investigation.
The result obtained by both methods, the orthogonal projections and restrictions to subspaces of the integral operator, object of the Alcantara-Bode equivalence, has been: RH holds. In other words: the non trivial zeros of the Riemann Zeta function are on the vertical line $\sigma = 1/2$.
Malat1 fine-tunes bone homeostasis by orchestrating cellular crosstalk and the β-catenin-OPG/Jagged1 pathway
Authors: Zhao Baohong , Qin Yongli , Shirakawa Jumpei , Xu Cheng , Chen Ruge , Ng Courtney , Nakano Shinichi , Elguindy Mahmoud , Deng Zhonghao , Prasanth Kannanganattu , Eissmann Moritz , Nakagawa Shinichi , Ricci William M.
Published: May 2024

The IncRNA Malat1 was initially believed to be dispensable for physiology due to the lack of observable phenotypes in Malat1 knockout (KO) mice. However, our study challenges this conclusion. We found that both Malat1 KO and conditional KO mice in the osteoblast lineage exhibit significant osteoporosis. Mechanistically, Malat1 acts as an intrinsic regulator in osteoblasts to promote osteogenesis. Interestingly, Malat1 does not directly affect osteoclastogenesis but inhibits osteoclastogenesis in a non-autonomous manner in vivo via integrating crosstalk between multiple cell types, including osteoblasts, osteoclasts and chondrocytes. Our findings substantiate the existence of a novel remodeling network in which Malat1 serves as a central regulator by binding to β-catenin and functioning through the β-catenin-OPG/Jagged1 pathway in osteoblasts and chondrocytes. In pathological conditions, Malat1 significantly promotes bone regeneration in fracture healing. Bone homeostasis and regeneration are crucial to well-being. Our discoveries establish a previous unrecognized paradigm model of Malat1 function in the skeletal system, providing novel mechanistic insights into how a lncRNA integrates cellular crosstalk and molecular networks to fine tune tissue homeostasis, remodeling and repair.
Triptolide alters intestinal bacteria and ameliorates progression of rheumatoid arthritis in mice
Authors: Pan Xuekang , Jin Zeyuan , Chen Bao , Pan Yuelan , Lu Huigen , Chen Gang
Published: May 2024

Background
Triptolide is a natural compound with immunosuppressive properties. Triptolide has used as a traditional Chinese medicine to treat rheumatoid arthritis (RA). We explore the effects of triptolide on intestinal bacteria and its potential role in alleviating RA progression in mice.
Methods
We randomly assigned thirty-six mice to six of the following groups: Con group, adjuvant-induced arthritis (AIA) group, Htrip group, Mtrip group, Ltrip group and Cele group. We collected tissue and blood samples as well as peritoneal macrophages to assess the effects of triptolide on the response to AIA through physical examinations, ELISA and PCR. We used 16S rDNA gene sequencing to analyze the intestinal flora of AIA mice treated with triptolide. Western blot was used to identify the potential influences on the TLR4/NF-κB pathway, ZO-1 and Occludin.
Results
Our findings showed that triptolide led to a significant reduction in the arthritic index score and paw swelling. It also improved intestinal barrier function by upregulating ZO-1 and Occludin. Furthermore, triptolide treatment caused changes in the intestinal flora by increasing the abundance of beneficial bacteria while decreasing harmful bacteria. Finally, our study demonstrated that triptolide inhibited TLR4/NF-κB, which contributed to its suppressive effects on inflammation.
Conclusion
In summary, our results suggest that triptolide can significantly alleviate the inflammatory response in AIA mice and, at the same time, promote recovery of intestinal barriers. Its mechanism may potentially be mediated by the intestinal flora through the TLR4/NF-κB pathway.
Differences in Depression and Suicidal Ideation between Sexual Minority and Heterosexual Adults: National Health and Nutrition Examination Survey 2005- 2016
Authors: Fu Yidian , Jiang Chao , Dong Yanhong , Fu Huabin , Zhang Jingbo , Lv Peiyuan
Published: May 2024

Importance: Research on depression and suicidal ideation of sexual minority adults is needed to guide the development of targeted mechanism research and future tailored behavioral interventions.
Objective: To investigate sexual identity differences in depression and suicidal ideation among adults in the US.
Design, setting, and participants: The present cross-sectional study analyzed population-based data from the National Health and Nutrition Examination Survey (2005-2016). Participants included participants aged from 20 to 59 year weighted to represent approximately 788 million US adults.
Exposures: Self-reported sexual identity categorized as heterosexual, gay/lesbian, bisexual, or others.
Main outcomes and measures: The main outcomes were depression and suicidal ideation which defined based on the Patient Health Questionnaire-9.
Results: Our study included 16602 participants (mean age, 39.5 years [95% CI, 39.2-39.9]; 8109 male participants [49.02%]). Male participants who identified as others had higher rate of depression than heterosexual male adults (odds ratio [OR], 3.08; 95% CI [1.06-8.99]). Bisexual male individuals had higher rate of suicidal ideation than heterosexual male participants (OR, 4.53; 95% CI [2.31-8.88]). Compared with heterosexual female participants, bisexual female had higher rate of depression (OR, 2.32; 95% CI [1.68-3.19]) and suicidal ideation (OR, 3.53; 95% CI [2.28-5.48]). There were no significant differences between gay/lesbian and their same sex heterosexual counterparts in depression and suicidal ideation.
Conclusions and relevance: Results of this cross-sectional study suggested that bisexual female participants and others group of male participants had higher rate of depression compared with their counterpart heterosexual participants, furthermore, bisexual male/female participants had higher rate of suicidal ideation than those of heterosexual participants. There is a need for development of tailored interventions to depression symptoms of sexual minority individuals. Future cohort research is needed to examine factors that might contribute to these results among sexual minority individuals.
Effect of reclamation projects on the salt ion migration process in the saline-alkali soil of tidal flats
Authors: Zhu Hao , Zhou Yongjia , Zhang Wang , Liu Xingguo , Zheng Gang , Zhang Chunfang , Xiao Jinxing
Published: May 2024

The estuarine and tidal flat silt-promoting project and enclosure project have increased the land supply, but the soil salinization is serious, and the research on the driving mechanism of soil salinity and nutrients in reclamation projects is relatively few. To understand the migration law and major factors influencing saline-alkali ions in soil after reclamation projects, six reclamation areas on Hengsha Island from 2003 to 2018 were used as research locations, and 55 investigation sites were set up to monitor and analyze the saline-alkali ions and physical and chemical indexes in soil and water. The results showed that the reclamation areas in the Yangtze River estuary were all chloride-type saline alkali areas. Among them, the saline-alkali ions in the soil in the reclamation area were significantly higher than those in the old reclamation area within five years. Na+, K+ and Cl- were higher in areas with low moisture content, while Ca2+, SO42- and HCO3- were higher in soil with vegetation. The soil salt ions and physical and chemical indexes in the reclamation area appeared stratified. Correlation analysis showed that organic matter, moisture content and phosphorus were the major factors affecting soil salt ions and pH in the reclamation area.
Environmental impact of fireworks during the celebration of New Year's Eve on the air quality in an urban region: Queretaro, Mexico
Authors: Rodríguez-Trejo Alejandro , Ibarra-Ortega Héctor Enrique , Böhnel Harald , González-Guzmán Reneé , Sánchez-Ramos Luis Enrique , Castañeda-Miranda Ana Gabriela , Márquez-Ramírez Victor Hugo , Chaparro Marcos Adrián Eduardo , Chaparro Mauro Alejandro Eduardo
Published: May 2024

The high concentrations of particulate matter (PM) in the atmosphere have adverse effects on both the environment and human health, as well as on urban and faunal biodiversity. Short-term events, such as the burning of fireworks, attributable to human activity, result in a significant and rapid increase in PM concentration levels within the atmosphere. We present findings derived from observations made using low-cost PM sensors deployed as part of the Environmental Monitoring Network in Querétaro, Mexico. These sensors utilize the Environmental Geo Monitoring Stations (EMGA) device, developed by the Institute of Geosciences at UNAM. The observation period spanned from December 10, 2023, to January 10, 2024, encompassed the Christmas and New Year holidays, and focused on PM2.5 concentrations, and a comparison with a similar period from February 10, 2024, to March 10, 2024, considered a typical activity period in the area. The results reveal a substantial increase in PM2.5 concentrations over time and spatial distribution during this period, with notable increases observed during the festive season. Specifically, prolonged periods exceeding up to 6 hours were noted on festivities dates. This research offers insight into the effects, trends, and spatial-temporal distribution of pollutants within the city of Queretaro, which may be used as a reference for other cities around the world. Furthermore, a comparison between PM2.5 data recorded by the EMGA devices and infrasound data was conducted complementarity to explore potential correlations between these two types of data.
Insights into the palaeo-trophic food web of the Brazilian Romualdo Formation (Cretaceous, Aptian–Albian) based on fossil mercury bioaccumulation
Authors: Antonietto Lucas , Azevedo Igor , Holgado Borja , Rocha Antonio , Ferreira Maria , Saraiva Antonio , Lacerda Luiz
Published: May 2024

In aquatic environments, mercury (Hg) bioaccumulation rates tend to reflect the organism’s position in the food web – the larger the rate, the higher their position. Here we present the first attempt to reconstruct such web for the Romualdo Formation of the Araripe Basin (Northeastern Brazil), based on Hg bioaccumulation of its fossil record; the aim is to understand possible trophic relationships between vertebrate/invertebrate species inhabiting its paleoenvironments. Observed ratios between Hg concentrations [Hg] in fossils and their surrounding concretions ([Hg]sample) suggest bioaccumulation increases with the change in feeding habits and size of the fish taxa analysed, being lowest in Rhacolepis to a maximum peak in the large predator genera Cladocyclus and Calamopleurus. Feeding habits of Vinctifer were also reviewed, and the genus was reinterpreted from filter feeder to mesopredator; durophage bottom-feeding taxa recorded values compatible with their predicted feeding habits. Low [Hg]sample ratios were observed in ornithocheiriform pterosaurs, suggesting it a mesopredators specialized in the smaller fish species, while Thalassodrominae presented intermediate to high [Hg]sample, pointing out to a unique trophic role as a terrestrial opportunistic generalist, ranging from predator to scavenger.
Colon-targeted Engineered Postbiotics Nanoparticles Alleviating Osteoporosis through Gut-Bone Axis
Authors: Nie Guangjun , Yu Tingting , Bai Rushui , Wang Zeming , Qin Yuting , Wang Jingwei , Wei Yaohua , Zhao Ruifang , Han Bing
Published: May 2024

The potential for mitigating intestinal inflammation through the gut-bone axis in the treatment of osteoporosis is significant. While various gut-derived postbiotics or bacterial metabolites have been created as dietary supplements to prevent or reverse bone loss, their efficacy and safety still need improvement. Herein, a colon-targeted drug delivery system was developed using surface engineering of polyvinyl butyrate nanoparticles by shellac resin to achieve sustained release of postbiotics butyric acid at the colorectal site. These engineered postbiotics nanoparticles can effectively suppress macrophage inflammatory activation, modulate the redox balance, and regulate the composition of the gut microbiota, thereby restoring epithelial barriers, inhibiting bacterial invasion, and down-regulating pro-inflammatory responses. As a result, the remission of systemic inflammation is accompanied by a rebalancing of osteoblast and osteoclast activity, alleviating IBD-related and post-menopausal bone loss. This study provides valuable insights into the gut-bone axis and establishes a promising and safe therapeutic strategy for osteoporosis.