bluuebunny/crossref_metadata_2025 huggingface dataset:
Удосконалені методи діагностики, прогнозування та корекції ендокринопатій (раку щитоподібної залози та цукрового діабету)
Authors: Tronko M.D. , Zelinska H.V. , Zamotayeva H.A. , Cherska M.S. , Bozhok Yu.M. , Kuchmenko T.M. , Kulinichenko H.M. , Ustymenko H.Ya.
Published: January 2024

У статті узагальнено та проаналізовано матеріал, присвячений комплексному науковому дослідженню цитологічних, ультразвукових, імунологічних і кардіологічних аспектів папілярного раку щитоподібної залози (ПРЩЗ) та цукрового діабету (ЦД), на основі чого удосконалено підходи до прогнозування, діагностики й корекції ендокринопатій. Мета дослідження — розробка точних методів передопераційної діагностики та прогнозування радіойодрезистентності (РЙР) ПРЩЗ для вибору адекватної терапії на підставі проведення цитологічних, імуноцитохімічних і комп’ютерно-морфометричних досліджень пунктатів новоутворень ЩЗ; оцінка гематологічних та імунологічних наслідків радіойодтерапії (РЙТ); визначення лікувально-профілактичних заходів для корекції гіперпроліферативних процесів репродуктивної сфери (ГПРС) у хворих на рак ЩЗ (РЩЗ) та розвитку кардіоваскулярних порушень у хворих на ЦД. Об’єкт: цитологічні характеристики ПРЩЗ та його метастазів, ехографічні ознаки уражень серцево-судинної системи, матки та молочних залоз, стан імунної та кровотворної систем хворих на РЩЗ у процесі терапії радіоактивним йодом (РЙ). Матеріал та методи: ультразвукові, цитологічні, імуноцитохімічні, статистичні, комп’ютерно-морфометричні, імунологічні, протокової цитометрії, радіонуклідні та лабораторні. Результати. Встановлено цитоморфологічні особливості ПРЩЗ та його метастазів, асоційовані з радіойодрезистентністю (РЙР), розроблено програмне забезпечення для обробки цифрових мікрофотографій пунктатів, проведена оцінка ризиків розвитку ГПРС у жінок, які пройшли лікування з приводу РЩЗ в довгостроковому спостереженні. Досліджені короткострокові та віддалені ефекти РЙТ на показники вродженого й адаптивного імунітету у хворих на РЩЗ, встановлені основні чинники, що визначають та моделюють ступінь імуногематологічних наслідків РЙТ. Виявлено зростання ризиків розвитку ГПРС в залежності від кількості курсів, кумулятивної дози радіоактивного йоду (РЙ) та супресивної терапії. Встановлено взаємозв’язкі показників церебральної, кардіальної, системної гемодинаміки та варіативного ритму серця (ВРС) у хворих на компенсований і декомпенсований ЦД 2-го типу (ЦД2) і церебральний атеросклероз (ЦА) різних стадій, у тому числі ускладненими розвитком інсульту. Розроблено підхід до прогнозування прогресування розвитку ішемічного інсульту на підставі визначення показників структурно-функціонального стану серця, церебральних судин і ВРС у пацієнтів із ЦА та ЦД2. Висновки. Розроблено методи передопераційної діагностики РЙР ПРЩЗ. Створено програмне забезпечення для диференційної цитологічної діагностики пухлин ЩЗ. Встановлені основні чинники, що визначають та моделюють ступінь імуногематологічних наслідків РЙТ. Визначено лікувально-профілактичні заходи для корекції ГПРС у хворих на РЩЗ і корекції кардіоваскулярних порушень у хворих на ЦД.
Папілярна мікрокарцинома щитоподібної залози: клінічні та патоморфологічні відмінності від великих раків
Authors: Gorobeiko M.B. , Dinets A.V. , Hoperia V.H. , Pysmenna Yu.M. , Lovin A.V. , Abdalla K.M.
Published: January 2024

Папілярна карцинома щитоподібної залози (ПКЩЗ) є частим злоякісним новоутворенням щитоподібної залози. ПКЩЗ розміром 1 см або менше в найбільшому діаметрі класифікується як мікрокарцинома (ПМКЩЗ). До 10% ПМКЩЗ мають біологічно агресивний перебіг, що проявляється інвазивними характеристиками пухлини (інвазія кровоносних судин, лімфатичних судин, периневральна інвазія, поява фігур мітозів), рецидивом карциноми, які є параметрами, які важко передбачити, але які суттєво впливають на прогноз перебігу хвороби. Мета. Дослідити та оцінити клінічні та гістопатологічні особливості ПМКЩЗ порівняно з ПКЩЗ. Матеріал і методи. Виявлено 91 хворого на ПКЩЗ, які проходили оперативне лікування на клінічних базах кафедри хірургії ННЦ «Інститут біології та медицини» Київського національного університету ім. Тараса Шевченка. У досліджуваній когорті з 91 пацієнта в 50 (85%) хворих діагностовано ПМКЩЗ, у 41 (15%) — ПКЩЗ. Результати. Інвазію в лімфатичні судини достовірно рідше діагностували в 15 (30%) пацієнтів у групі ПМКЩЗ порівняно з 24 (58%) пацієнтами в групі ПКЩЗ (p<0,005). Також у групі ПМКЩЗ не було діагностовано жодного випадку периневральної інвазії карциноми, що достовріно нижче порівняно з 4 (10%) пацієнтами в групі ПКЩЗ (p<0,005). Подальший аналіз патоморфологічних даних також показав статистично значущу різницю між даними макроскопічної та мікроскопічної інвазії карциноми. Мікроскопічна екстратиреоїдна інвазія карциноми рідше виявлялася в пацієнтів групи ПМКЩЗ – 2 (4%) хворих, порівняно з 12 (29%) пацієнтами у групі ПКЩЗ (p<0,005). Макроскопічна екстратиреоїдна інвазія діагностувалась значно рідше в пацієнтів групи ПМКЩЗ в 1 (2%) пацієнта, порівняно з 9 (22%) пацієнтами в групі ПКЩЗ (p<0,005). Висновки. ПМКЩЗ виявляє нижчу біологічну агресивність, ніж ПКЩЗ, про що свідчать нижча частота мікроскопічної та макроскопічної інвазії, периневральної інвазії та лімфатичної інвазії. Мікрокарциному можна вважати більш сприятливим прогностичним фактором для пацієнтів із ПКЩЗ.
Ураження органів травлення при цукровому діабеті
Authors: Borovets M.O. , Radchenko О.М. , Moskva Kh.A. , Komarytsya O.Yo. , Urbanovych A.M.
Published: January 2024

Цукровий діабет (ЦД) є однією з визначальних проблем сучасної ендокринології. Це спричинено значним зростанням захворюваності на цю недугу за останні десятиріччя, подовженням життя пацієнтів завдяки все більш ефективній сучасній цукрознижувальній терапії, малорухомому та стресовому способу життя сучасних мешканців України. Ураження шлунково-кишкового тракту (ШКТ) розвиваються та прогресують вже на момент постановки хворому діагнозу ЦД. Також слід розуміти, що захворювання органів травлення при ЦД формуються та наростають за умов поганого глікемічного контролю захворювання; наявності ожиріння, інсулінорезистентності, порушень ліпідного метаболізму та зі збільшенням тривалості ЦД. Серед цих уражень виділяють гастроінтестинальні зміни, в основі виникнення яких, у першу чергу, лежить діабетична нейропатія (патологія екстра- та інтраорганної інервації), ураження блукаючого нерва; так і стани, пов’язані з гормонально-метаболічними змінами, що є наслідком не тільки порушеного тканинного метаболізму, а й виражених судинних змін. Крім цього, дослідження останніх років доводять, що одним із не менш важливих факторів впливу на процеси в ШКТ та печінці є мікробіота кишківника, що охоплює широке коло мікроорганізмів. Діабетичне ураження печінки пов’язане перш за все із її жировою інфільтрацією, спричиненою недостатністю інсуліну, збідненням печінки глікогеном, посиленням ліполізу на периферії, мобілізацією вільних жирних кислот та тригліцеридів із жирової тканини та підвищеним транспортом їх у печінку, що веде до розвитку гепатостеатозу та стеатогепатиту. Розвиток метаболічно-асоційованої жирової хвороби печінки також спричиняє прогресування серцево-судинних ускладнень ЦД. Наявність уражень ШКТ у хворих на ЦД потребує спостереження лікарів різних спеціальностей. Надзвичайно важливо в щоденній лікарській практиці враховувати стан органів травлення при виборі тактики як цукрознижувальної, так і будь-якої іншої терапії.
AI-based Electric Fire Detection State Judgment Data Set Construction
Authors: Kim Hee-Chul
Published: January 2024

In this paper, we create a virtuous cycle ecosystem of AI data for judging electric fire status. Data collection reflects feedback on inspection results such as collection of electric fire status judgment data through cloud sourcing and purification, processing, inspection and data disclosure of the collected data. It is necessary to determine the cause of the damage through fire forensics in order to confirm the property damage caused by the fire. The damage investigation so far is based on the experience of the investigator, and it is difficult to conduct a sufficient investigation and analysis of multiple fires. Accordingly, by building a data set for AI learning for the cause analysis of electric fires, The AI composition that can overcome the subjective and unprofessionalism of the forensic of electric fires is made. Therefore, we study the reliability and system development feasibility of digital conversion of fire detection report and data for AI learning.
Pengaruh Latihan Passing Bawah Menggunakan Media Dinding Terhadap Kemampuan Passing Bawah Bola Voli
Authors: Alpandi Donan , Sukardi Sukardi , Oktariyana Oktariyana
Published: January 2024

Penelitian ini bertujuan untuk menegtahui apakah latihan passing bawah menggunakan media dinding berpengaruh terhadap kemampuan passing bawah bola voli pada club ISPRI Palembang. Metode penelitian yang digunakan adalah metode eksperimen dengan desain penelitian One Group Pretest-Posttest. Sampel dalam penelitian ini adalah seluruh atlet putra di club ISPRI Palembang, dengan jumlah 15 orang. Teknik pengumpulan data menggunakan tes, dengan instrumen berupa tes passing untuk mengukur ketepatan mengarahkan bola saat passing. Teknik analisis data menggunakan analisis uji-t, melalui uji prasyarat uji normalitas dan homogenitas. Hasil penelitian menunjukkan bahwa t hitung sebesar 5,597 lebih besar dari t tabel sebesar 1,761 (5,597>1,761), sehingga terdapat perbedaan yang signifikan antara data sebelum dan sesudah diberikan perlakuan. Peningkatan rata-rata tersebut terlihat signifikan karena terjadi peningkatan sebesar 1,40 dari 6,80 menjadi 8,20. Dengan demikian, dapat disimpulkan bahwa ada pengaruh Latihan passing bawah menggunakan media dinding terhadap kemampuan passing bawah bola voli pada club ISPRI Palembang
ALGORITMA K-NEAREST NEIGHBOR (K-NN) DAN SINGLE LAYER PERCEPTRON (SLP) UNTUK KLASIFIKASI PENYAKIT ALZHEIMER
Authors: Dewi Novi Rustiana , Desiani Anita , Salamah Fitri , Andriani Yuli
Published: January 2024

Alzheimer's disease is a brain disorder that causes memory loss, decreased thinking skills, communication difficulties, and behavioral changes. Early detection of this disease is very important for proper treatment and planning of medical needs. However, there is currently no drug that can cure Alzheimer's. Therefore, this study aims to develop accurate early predictions for Alzheimer's disease by comparing two algorithms: K-Nearest Neighbor (KNN) and Single Layer Perceptron (SLP) using the percentage split method. The results showed that testing using the K-NN algorithm resulted in an accuracy of 96%. The precision and recall values for class 0 (nondemented) are 93% and 100%, respectively, while for class 1 (demented) are 100% and 91%. On the other hand, testing using the SLP algorithm produces an accuracy of 99%. The precision and recall values for class 0 (nondemented) are 97% and 100% respectively, while for class 1 (demented) are 100% and 98%. Based on a comparison of the values for accuracy, precision, and recall, as well as the performance of the two classification methods, it can be concluded that the implementation of the Single Layer Perceptron algorithm provides the best prediction for early detection of Alzheimer's disease. These findings provide potential use of this algorithm in facilitating early diagnosis and timely intervention for patients with Alzheimer's.
SISTEM AKUISISI DATA TINGGI GELOMBANG LAUT BERBASIS IOT
Authors: Mukhlisin Mukhlisin , Irvawansyah Irvawansyah , Daniel Ahmad , Hafid Andi Ambas , BJ Burhan
Published: January 2024

Ocean wave height data is very much needed in the maritime world to support fishing activities, transportation, and coastal life. Ocean wave heights are easy to change so it is difficult to obtain measurement data, we need a system that is able to observe the behavior and changes in ocean wave height that is accurate and easy to monitor. The aim of this research is to design a data acquisition system for ocean wave height that is able to work with real time conditions and able be monitored at any time. The methods of this research is quantitative research using an experimental design. The system design consisted of field observations and literature studies, procurement of tools and materials, tool design, tool testing, and research data collection. Data collection techniques are carried out by testing sensors and displays on the application. The results showed that the Sea Wave Height Data Acquisition System that has been designed can work with an error percentage of 1.26% and has a very high level of measurement accuracy with an accuracy percentage of 98.74%. The results of the performance test of the Sea Wave Height Data Acquisition System that has been designed to be able to detect, collect, send, process, and display ocean wave height result data in real time.
ANALISIS PENGARUH VARIASI TEKANAN GAS DAN PERSENTASE KETEBALAN LAPISAN BOUNDING DAN COATING PADA PROSES REBUILD-UP MATERIAL BAJA AISI 1045 DENGAN METODE ARC SPRAY TERHADAP TINGKAT KEREKATAN ANTAR LAPISAN
Authors: Mamang Fathani Adhitya , Bachtiar Bachtiar , Rohmat Imam Khoirul , Fato Adri
Published: January 2024

Each engine component has the durability that can decrease and wear due to continuous friction. The thermal spray method is an alternative that is used. The type of thermal spray that is found in the industry is Arc Spray. However, the peeling of the coating metal with the substrate is one of the problems. In this study, the variables that have contributed to the peeling of the coating layer were taken. The variables compared are the total thickness of the bounding and coating layers of 1 mm with a percentage of 50% : 50% and 30% : 70%. Another variation is gas pressure of 2 Bar, 3 Bar and 4 Bar in rebuild-up process of AISI 1045. Specimens with thickness percentage of 30% : 70% have significant difference in tensile strength value compared to the thickness percentage of 50% : 50% with an average difference of 5.02 MPa; 4.8975 MPa and 3.29 MPa in specimens with a gas pressure of 2 bar; 3 bars; 4 bars. The influences of thickness of bound and top coat have percentage effect 21.12% on each layer. As the gas pressure increases, the bonding value is higher because the higher gas, the smaller porosity which is proved by microstructural tests.
PERAN STRATEGIS SCRUM MASTER PADA PENGEMBANGAN PERANGKAT LUNAK DI SEBUAH INDUSTRI
Authors: Pamungkas R Wisnu Prio , Zebua Beatric Stevany , Azizah Aulia Nada
Published: January 2024

At present, in latest industrial era, to realize the success of Integrated Product Development, many industries are competing to find innovative project design methodologies that are able to adapt to developments and consumer behavior that often changes from time to time amid the development of science and technology in dealing with competition in the 4.0 revolution era.  When the industry is required to periodically produce its products and services quickly by adjusting to market movements, product development can be inspired through the Agile Project Management framework approach with the Scrum method. Not a few of the information technology (IT) industry has begun to transform to adapt the Scrum Method because of its adaptive nature for the purpose of team-based iterative software development. However, the limitations and the lack of studies in exploring the nature and characteristics of Scrum currently make many people still not too familiar with the existence and essence of a Scrum Master, especially the nature and characteristics known as a servant leader (Servant-Leader). The aim of this research is to understand the true role of a Scrum Master who is at the heart of the application of the Scrum method in software development in an industry, so that it is expected to help realize the fulfillment of excellent and optimal services that are faster and more agile.
DATA LOGGER DEBIT AIR DENGAN PROTOKOL M-BUS UNTUK APLIKASI CHILLER
Authors: Falahuddin Muhamad Anda , Arman Muhammad , S Susilawati , Ayu Wirenda Sekar
Published: January 2024

The M-bus protocol is one of the communication protocols in the rapidly developing field of measurement. The protocol uses a pair of cables and can communicate with several measurement devices in two directions such as a flowmeter. In the chiller system, water circulation varies depending on the cooling load and set point of operation, consumption (electric power) and chiller efficiency, one of which can be calculated based on logging the flow of water that circulates over time, therefore the water discharge data logger becomes very important. This study aims to examine the water discharge data logger with the M-Bus protocol for chiller applications. The testing device includes a series of bench water meters as flowmeters (which water can be simulated circulated) equipped with an M-Bus pick-up sensor, M-Bus concentrator and logger, and software connected to a computer. Tests carried out with variations in water discharge based on the valve opening as a simulation of cooling load variations and see the results of recording from time to time on a computer. The display can be in the form of tables and graphs.
KAJI EKSPERIMENTAL RETROFIT R404A DENGAN REFRIGERAN RAMAH LINGKUNGAN R290 PADA FREEZER
Authors: Sumeru Kasni , Pramudantoro Triaji Pangripto , Badarudin Apip , Nugraha Ridwan , Simbolon Luga Martin , Sukri Mohamad Firdaus bin
Published: January 2024

R404A refrigerant is still widely used as the working fluid in freezers with temperatures below -30°C. However, because of R404A’s high global warming potential (GWP) value, its use as a working fluid should be stopped immediately. One alternative is an environmentally friendly refrigerant, that is R290. In this study, the R404A refrigerant was replaced by R290 in a freezer that can reach -40°C. In the case of replacing a refrigerant with a different type, the reference used is the same charging volume in the system. The filling mass of R290 is the ratio of the density of R404A to R290 at its evaporation temperature, which is -40°C. The amount of R404A’s mass filling is 170 g, while the amount of R290’s mass filling is 62.9 g. Based on a 120-minutes testing, replacing R404A with R290 has resulted in the reduction of power input by 6.0%, as well as in the slight increase of its cooling capacity, which is 2.42%. As a result of the input power decrease and the cooling capacity increase, the COP in the freezer also increased, namely by 8.05%. More importantly, if a leak occurs in the refrigerant, the replacement of R404A with R290 can help reduce gas emissions that contribute to global warming. It is because the GWP value of R404A refrigerant, which is 3922, is replaced by the GWP value of R290 refrigerant, which is only 3.
The Roman Villa of l’Albir (Alicante, Spain). The use of Blender and the Extended Matrix in the virtual reconstruction
Authors: Molina Jaime , Esclapés Javier , Frías Carolina , Munoz Javier , Martín Alejandro , Sánchez Mónica , Fabregat Laia , Tejerina Daniel
Published: January 2024

In this paper we describe the workflow followed to produce a 360-degree digital short film to virtually recreate the Roman Villa of L’albir (L’alfàs del Pi, Spain), from the preliminary steps and production stages, to the use of the Extended Matrix tool to document the entire virtual reconstruction and recreation process.
Effective Mass Substitutes Relativistic Mass in Special Relativity and Lorentz's Mass Transformation
Authors: Thakur Soumendra Nath
Published: January 2024

This research paper delves into the mathematical validation of energy equivalent equations, spanning classical energy formulations, energy frequency equivalences, and energy mass equivalences. Classical mechanics principles, including potential and kinetic energy equations, are juxtaposed with Planck's energy equation and Einstein's mass-energy equivalence principle. Nuclear energy generation via nuclear reactions, such as fission and fusion, is scrutinized alongside alternative energy conversion mechanisms like chemical reactions and mechanical energy conversion. Furthermore, the paper elucidates the nuances between energy conversion and energy transformation, accentuating their divergences and practical implications.

Additionally, the examination extends to mass-energy reversible conversion and transformation, particularly in the context of nuclear reactions, unveiling the interchangeable nature of mass and energy. The theoretical construct of effective mass emerges as a cornerstone, offering profound insights into the intricate interplay between energy and mass, notably in realms involving dark energy and gravitational dynamics.

Throughout this discourse, fundamental principles are woven, emphasizing that object motion imparts kinetic energy due to velocity, while gravitational potential energy remains aloof from direct participation in mass-energy conversion. Unlike the immutable nature of rest mass (m₀), effective mass (mᵉᶠᶠ) exhibits variability, essential for comprehending relativistic effects accurately.

Moreover, alternative forms of energy conversion starkly contrast nuclear reactions, devoid of nuclear composition alterations or nuclear energy conversions. Herein lies the crux: mass and energy are inherently equivalent and interchangeable, rendering the concept of relativistic mass (m′) redundant. Effective mass (mᵉᶠᶠ) emerges as the apt terminology, encapsulating the apparent mass associated with various energy phenomena, and providing a cogent theoretical framework for unraveling the intricate relationship between energy and mass.

Through a meticulous blend of analysis and theoretical exploration, this paper propels us towards a deeper understanding of energy-mass relationships, underpinning their far-reaching implications across diverse physical phenomena.
Conservation of Baryon and Lepton Number is an Effect of Electric and Magnetic Charges
Authors: Kühne Rainer
Published: January 2024

The conservation of baryon number and lepton number has not yet been explained. Here I present a new nomenclature where I redefine isospin and hypercharge. By doing so I explain baryon and lepton number conservation as an effect of the electric-magnetic duality and the \(U(1)\times U(1)\) gauge symmetry of quantum electromagnetodynamics. By using this method I predict the quantum numbers of an octet of magnetic monopoles. Another surprising result is that both leptons and quarks have nonzero magnetic isospin, a new quantum number.
Assessment of Urban Health Extension Package Utilization and Healthcare Seeking Behavior among Model and Non-Model Households in Addis Ababa, Ethiopia
Authors: Akale Shitahun Yenet , Getahun Genanew Kassie , Akalu Shibabaw Yirsaw , Alaminie Fentayehu Ababil
Published: January 2024

BACKGROUND: Ethiopia has been implementing the Urban Health Extension Program (UHEP) at the community level since 2009. The program was a pro-poor and cost-effective approach that aimed to enhance utilization of urban health extension program packages and empower community healthcare-seeking behavior. This study was conducted to compare the utilization and healthcare-seeking behaviors of urban health extension program packages and the healthcare-seeking behaviors of model and non-model households.

METHODS: A community-based comparative cross-sectional study was conducted among 594 female household heads (297 models and 297 non-models) using a structured face-to-face interview. A bivariate and multivariable logistic regression analysis was employed to identify associated factors. A p-value less than 0.05 and an adjusted odds ratio (AOR) with a 95% confidence interval were carried out to identify significant factors.

RESULTS: Urban health extension program package utilization was 78% among model households and 64.2% among non-model female households. A total of 75.5% model and 65.2% non-model female household heads had appropriate healthcare-seeking behavior. Moreover, having information about UHEPs (AOR = 2.35, 95% CI = 1.08-3.42), frequency of home visits by UHEWs (AOR = 2.12, 95% CI = 1.01-3.13), knowledge about UHEPs (AOR = 3.14, 95% CI = 2.43-4.47), and household graduation status (AOR = 3.052, 95% CI = 2.024-5.13) were significantly associated with urban health extension program package utilization and healthcare-seeking behaviors.

CONCLUSION: In terms of utilization, the overall urban health extension package favors model female household heads over non-model female household heads. As a result, raising awareness, having frequent home visits, and focusing more on disease prevention and control packages will boost the adoption of urban health extension packages.
Data analysis with interval uncertainty: application of a combined sampling measure
Authors: Bazhenov A. N. , Zhilin S. I. , Telnova A. Yu.
Published: January 2024

One of the main tasks of data analysis is to estimate the parameters of a data sample of the constant physical value. Data analysis is required in all areas of experimental physics to obtain reliable measurement results. To describe sample elements with interval uncertainty, the technique of interval analysis and interval statistics is used. In particular, the homogeneity of data in a sample is described using various measures of similarity. A set of three coherence measures is presented that describe different relationships of sample elements. Based on the considered set, a combined measure of sample similarity is proposed, which allows one to simultaneously find external and internal estimates of the value under study. These estimates are important for solving a massive data processing problem, when the sets of samples are obtained under different measurement conditions. The necessary information about interval analysis and various interval arithmetic is provided. The relations between the proposed combined measure and the results of calculations with interval twins and fuzzy sets are considered. This combined measure can be used when solving a massive data processing problem typical for practical and scientific areas of semiconductor physics. A practical example of the use of a combined sample consistency measure when testing solar radiation converters against a reference converter is given as part of the study of their spectral properties and quantum yield.
The state primary standard of transmitted (received) information (data) quantity unit and packet networks parameters values units GET 200-2023
Authors: Aprelev A. V. , Belyaev V. S. , Suddenok Y. A. , Shorin V. N.
Published: January 2024

The results of research aimed at ensuring the uniformity of measurements in the fi eld of digital communications are presented. The requirements for metrological characteristics of transmitted (received) information (data) quantity unit and packet networks parameters values units GET 200-2023 are defi ned, taking into account the provision of the necessary margin of accuracy when transmitting units of measured values to working standards and measuring instruments. The problematic issues of ensuring the uniformity of measurements in packet data transmission networks are described, the developed methods description and means by which the packet networks parameters values units are reproduced is given. The technical means composition and achieved metrological characteristics of the standard, transmission procedures reproducible GET 200-2023 units of quantities, working standards of various types and measuring instruments are given. It is established that the capabilities of GET 200-2023 in the fi eld of measurements uniformity of the packet networks parameters will meet the country needs in the next 5–7 years.
Volumetric geometric accuracy of multi-axis measurement and technological systems: analysis and correction
Authors: Teleshevskii V. I. , Sokolov V. A.
Published: January 2024

The paper describes a method of accuracy improvement for multi-axis NC-controlled technological and measurement systems. Such systems are essentially cyber-physical in conditions of integration of calculations into physical processes in modern digital production. Volumetric accuracy – ability of a system to precisely reproduce a complex geometrical surface – is an important characteristic of multi-axis systems. Both measurement devices and methods of error correction are being improved by up-to-date researchers. The paper considers a method of convenient visualization of large amounts of collected data and an approach to improve volumetric accuracy by means of volumetric error compensation. The considered visualization method provides valuable data on multi-axis system’s accuracy characteristics and information about infl uence of various error components on multi-axis system’s error map. The accuracy improvement approach was implemented by original software. The experiments confi rmed accuracy improvement and low time and material costs of the method. The proposed method and approach are basis for consolidation of accuracy information collected from various multi-axis systems into united enterprise network and offers possibilities for artifi cial intelligence employment in order to develop new and advance existing technologies.
Photocatalytic activity of ɑ-Fe2O3 synthesized by sol-gel method using cellulose nanocrystals as sacrificial template
Authors:   University of Science, Vietnam National University, Ho Chi Minh City, Vietnam, Nang Vu An ,   Vietnam National University, Ho Chi Minh City, Vietnam, Thi Ngoc Le Hoa ,   University of Science, Vietnam National University, Ho Chi Minh City, Vietnam; Vietnam National University, Ho Chi Minh City, Vietnam, Hai Nguyen Dang ,   University of Science, Vietnam National University, Ho Chi Minh City, Vietnam; Vietnam National University, Ho Chi Minh City, Vietnam, Thi Thanh Tran Van ,   University of Science, Vietnam National University, Ho Chi Minh City, Vietnam; Vietnam National University, Ho Chi Minh City, Vietnam, Bach Phan Thang ,   Vietnam National University, Ho Chi Minh City, Vietnam; Center for Innovative Materials and Architectures (INOMAR), Vietnam, Van Le Hieu ,   University of Science, Vietnam National University, Ho Chi Minh City, Vietnam; Vietnam National University, Ho Chi Minh City, Vietnam
Published: January 2024

In this study, hematite (a-Fe2O3) was prepared based on the sol–gel method using cellulose nanocrystals (CNCs) as sacrificial template, and its performance on degradation of methylene blue from aqueous solution under sunlight irradiation was investigated. CNCs were synthesized from Nypa fruticans trunk (NFT) biomass via formic /peroxyformic acid process treatment and acid hydrolysis at atmospheric pressure. Images generated by transmission electron microscopy (TEM) showed that CNCs were rod-like in morphology, average diameter and length of 10 nm and 410 nm, respectively. The obtained CNCs were used as a template to prepare hematite (a-Fe2O3) nanostructures through sol-gel method. The samples were characterized by Field Emission Scanning Electron Microscope (FESEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). Their surface area was analyzed by the N2 adsorption-desorption curve. The crystallite size of a-Fe2O3 prepared with CNCs and without CNCs, calculated from the XRD data by the Debye–Scherrer equation, were about 17.69 nm and 19.35 nm, respectively. The nitrogen adsorption characterization confirmed that the prepared a-Fe2O3 possessed the mesoporous structure, and its specific surface area was 90.9 m2g-1. The mesoporous a-Fe2O3 prepared with CNCs as template exhibited a significantly improved photocatalytic activity than that of the sample prepared without CNCs during the MB photocatalytic degradation process.
Vaccine for COVID-19: Role of adjuvants
Authors:   Department of Molecular and Environmental Biotechnology, Le Khanh-Thien ,   Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, VNUHCM, Vietnam, Pham Hoang-Tinh ,   Department of Molecular and Environmental Biotechnology; Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, VNUHCM, Vietnam, Tran-Van Hieu ,   Department of Molecular and Environmental Biotechnology; Laboratory of Biosensors, Faculty of Biology and Biotechnology, University of Science, VNUHCM, Vietnam
Published: January 2024

In the emergency that the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has globally spread, vaccine is one of the most indispensable defense lines to repulse the resulting Coronavirus Disease 2019 (COVID-19) pandemic. The effective immunization frequently requires appropriate adjuvants which play a key role to activate the dendritic cell maturation. Indeed, the antigen presentation of dendritic cells indisputably needs the collaboration of co-stimulatory molecules which are only expressed by mature dendritic cells to trigger T cell response. In this review, we collectively summarized well-known adjuvants used for vaccination as well as their characteristics and immunostimulatory effects on both of humoral and cell-mediated immune response. Besides, the applicability of adjuvants in COVID-19 vaccination and accompanying challenges were also discussed. Generally, despite of certain successes of available licensed adjuvants in the vaccination, new generations of novel adjuvants would absolutely be required to produce effective vaccines for other inevitable pathogenic organisms in the future.
Preparation of magnetic CoFe2O4/Cellulose nanocrystals composite as an catalyst for the methylene blue degradation
Authors:   University of Science, VNU-HCM, Vietnam, Nang Vu An , Thi Le Ngoc Hoa ,   University of Science, VNU-HCM, Vietnam, Thi Tran Thanh ,   University of Science, VNU-HCM, Vietnam, Ngoc Nguyen Vi Khanh ,   University of Science, VNU-HCM, Vietnam, Tien Le Khoa ,   University of Science, VNU-HCM, Vietnam, Van Le Hieu ,   University of Science, VNU-HCM, Vietnam
Published: January 2024

A magnetic CoFe2O4/cellulose nanocrystal (CoFe2O4/CNCs) composite was successfully prepared by a facile hydrothermal method and characterized as a Fenton-like catalyst for the methylene blue (MB) degradation. The structure and properties of this composite were characterized by X-ray diffraction (XRD), Fourier -Transform Infrared Spectroscopy (FT-IR), Field Emission Scanning Electron Microscope (FESEM), Energy-dispersive X-ray spectroscopy (EDX), EDX mapping, Vibrating-sample magnetometer (VSM), and Ultraviolet–visible spectroscopy (UV-Vis). Magnetic CoFe2O4 nanoparticles (CoFe2O4 NPs) were firstly synthesized and CNCs were then immobilized on the CoFe2O4 surface under hydrothermal conditions. The CoFe2O4/CNCs material had a smaller size with an average diameter of about 22 nm compared to the bare CoFe2O4 of 26 nm. In addition, CoFe2O4/CNCs possessed higher saturation magnetization (Ms) and smaller residual magnetization (Mr) than those of CoFe2O4. The Ms and Mr values of CoFe2O4/CNCs were 49.2 and 7.4 emu. g-1, respectively compared to those of CoFe2O4 (32.3 and 9.6 emu.g-1, respectively). The photo-Fenton catalytic activities were measured by the degradation of MB under UVA light illumination with the presence of H2C2O4 as a radical-producing source. The CoFe2O4/CNCs catalyst showed the ability to decompose MB at room temperature by 20% higher than that of the bare CoFe2O4. The stability of the catalyst was confirmed by its reuse in four consecutive cycles. Based on the environmental sustainability and magnetic separability, CoFe2O4/CNCs composite would be a relatively economical and environmentally friendly catalyst for practical applications in dye wastewater treatments.
Isolation of (2S)-naringin from very immature pomelo peels cultivated at Chau Thanh district, Tien Giang province
Authors:   Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, Vietnam, Khanh Hung Nguyen , Phuong Thanh Nguyen Hoang ,   Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, Vietnam, Thi Thuy Luyen Nguyen ,   Faculty of Geology, University of Science, Vietnam National University Ho Chi Minh City, Vietnam, Thi Thuy Lan Bui ,   Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, Vietnam, Du Huy Nguyen ,   Central Laboratory for Analysis, University of Science, Vietnam National University Ho Chi Minh City, Vietnam; Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, Vietnam
Published: January 2024

With an annual pomelo production of 800,000 tons, the isolation of naringin from the pomelo peel is an interest attracting research. Besides ripe ponelo peel, very immature pomelo discarded during the cultivation can also be considered as a potential source of raw materials for the isolation of naringin from peels because naringin exhibits diverse biological activities. The results of RP-HPLC-UV analysis on naringin, isolated from the peel of pomelo, showed that the naringin content in the pomelo peel, the isolation yield, and the chemical purity decreased with the maturity of pomelo. Particularly, the study found that the chemical purity (% naringin) of very immature pomelo peels (from 7-15 days old) possessed naringin products containing up to 92.3%, while % naringin products isolated from ripe pomelo peels (greater than 90 days old) contained only 53.3%. Furthermore, the chiral-HPLC-UV analysis showed that the racemization at C-2 of the isolated naringin increased promptly (the (2S)-naringin was converted to the (2R)-naringin) following the maturity. The enantiomeric excess (% ee) of (2S)-naringin in the very immature peels (pomelo of 7‒15 days old) possessed 79.3% while the ripe peels (pomelo over 120 days old) was -2.2%. Therefore, the very immature peel of pomelo would be a potential source of raw materials for the isolation of a high purity naringin. This could contribute the economic value to Vietnam's pomelo farming.
Triterpenoids and triterpenoid saponins from leaves of Bougainvillea spectabilis
Authors:   Faculty of Chemical and Food Technology, Ho Chi Minh City University of Technology and Education, Vietnam, Thi Vo Nga , Thi My Do Lien ,   Institute of Environment–Energy Technology, Sai Gon University, Ho Chi Minh City, Vietnam, Bao Pham Quy ,   Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam, Thi Anh Nguyen Tuyet ,   Department of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City, Vietnam
Published: January 2024

The genus Bougainvillea with about 18 species belonging to the family Nyctaginaceae is a widespread group throughout the world. Bougainvillea spectabilis was traditionally used in Indian and Mexico for treatment hepatitis, cough, and diarrhea. Ethanolic and methanolic extracts from leaves and stems of this plant showed anti–inflammatory activity. Some pharmacological studies have focused on antidiabetic activity of this species. Some extracts from leaves, bark exhibited hypoglycemic, -glucosidase, and amylase inhibitor activities. Phytochemical investigations have reported the isolation of flavonoids, triterpenoid saponins, and steroids. Leaves of B. spectabilis were collected and extracted with ethanol at room temperature by maceration method to obtain the ethanolic extract. By partitioning with n–hexane, ethyl acetate successively yields n–hexane and ethyl acetate extracts. Column chromatographies on normal phase silica gel, reversed–phase RP–18, and Sephadex LH–20 were used to isolate compounds 1–6. Their chemical structures were elucidated by HRESIMS, 1D, and 2D–NMR and compared with those reported in the literature, including lupeol (1), (20S)–3β–acetoxylupan–29–oic acid (2), maslinic acid (3), 3–O––D–(6'–O–methyl)glucuronopyranosyloleanolic acid (4), 3–O––D–(6'–O–ethyl)glucuronopyranosyloleanolic acid (5), and 3–O––D–glucopyranosyl–(14)––D–(6'–O–methyl)glucuronopyranosyloleanolic acid (6). All these compounds were isolated for the first time from the genus Bougainvillea.
Determinants of Tax Aggressiveness in Mining Companies Listed on the IDX
Authors:   Cenderawasih University, Abimanyu Anggito , Pangayow Bill , Seralurin Yohanes , Bleskadit Novalia
Published: January 2024

The objective of this study is to assess the impact of various factors, namely firm size, institutional ownership, capital intensity, profitability, and leverage, on the level of tax aggression exhibited by firms. The study's sample consisted of mining businesses that were listed on the IDX. A purposive sampling technique was employed to choose a total of 20 companies. The study employed purposive sampling as the technique of analysis. The collected data were subjected to statistical analysis using SPSS version 25. This study reveals institusional ownership and profitability exhibit itive impact on tax aggressiveness in this scenario, suggesting that the corporation in displaying an escalating towards tax aggressiveness. In Variables Update, researchers add profitability and leverage to support their research by examining whether these variables have a positive impact on tax aggressiveness. And take a closer look at the impact of mining companies on government revenue.
Performance of K-Means and DBSCAN Algorithm in Clustering Gross Regional Domestic Product
Authors:   Universitas Cenderawasih, Wororomi Jonathan K. , Girik Allo Caecilia Bintang , Paranoan Nicea Roona
Published: January 2024

Gross Regional Domestic Product (GRDP) is one of important indicator to determine the economic conditions of a region. GRDP are obtained from sum of value added produced by all unit of production in a region. This study uses GRDP by production approach that grouped into seventeen categories of industry. The government always put the big efforts to increase the economic growth after Covid-19 pandemic. The aim of this study is determined the cluster GDRB based on province in Indonesia at current prices and analyses the performance of the cluster method. The results showed that by using the DBSCAN, two clusters were formed and one province can be detected as an outlier. On the other hands, performance of the method by K-Means showed two clusters. The silhouette value using K-Means is higher than the DBSCAN. For this case, the performance of K-Means is more appropriate than DBSCAN to use in clustering province in Indonesia based on GRDP at Current Market Prices. Moreover, performance of DBSCAN shows more sensitive on outliers detection.
Willingness to Pay for Improving the Quality of Pasir Putih Beach Tourism Objects in Manokwari Regency
Authors:   University of Papua, Sirfefa Ismail Sirfefa , Wurarah Rully Novie , Elungan Oktavianus O.
Published: January 2024

This study examines tourists’ willingness to pay (WTP) related to efforts to develop and improve the environmental quality of Pasir Putih Beach. A sample of 100 respondents found that their overall willingness to contribute amounted to IDR 13,100,000, with an average individual willing to contribute IDR 131,000. Further analysis revealed that income and education factors positively and significantly influence WTP. This indicates that individuals with higher income and education tend to contribute more to the sustainability of the tourist attraction. However, perception factors related to facilities and cleanliness and the distance of residence from the tourist attraction did not show a significant influence. Most respondents prefer to pay Rp 100,000 to Rp 300,000, while no one is willing to contribute in the Rp 400,000 - 500,000 range. These results indicate the urgency for managers and local governments to consider infrastructure and facility improvements at Pasir Putih Beach as a strategy to increase WTP and financial support from tourists
Balancing the Scales: Navigating Benefits and Risks in Indonesia’s Sharia FinTech Landscape
Authors:   Universitas Malikussaleh, Zuhri Lubis Hikmah Adelia , Khairisma Khairisma , Puspitaningrum Rani , Ichsan Ichsan
Published: January 2024

This research provides a thorough literature analysis to clarify the dynamics of advancing financial technology that complies with Shariah for inclusive development and implementing broad surveillance in Indonesia. The objective is to provide a qualitative review of the current studies to offer insightful perspectives on the growth and risks related to Shariah FinTech. This study integrates a library research approach with a qualitative research methodology. The literature results suggest that Shariah-compliant FinTech is being more widely used in Indonesia, demonstrating its advantages and disadvantages. This literature-based study advances our understanding of the complex balance needed for the ethical and sustainable development of Indonesia’s developing Shariah FinTech sector.
12 Years of Aid Allocation Practice in Korea: Disparities in Accordance with Recipients’ Merits with the Lorenz Curve
Authors:   Korea Association of International Development and Cooperation, Park Kyeongrang , Lee Suk-Won
Published: January 2024

Purpose: This paper has examined whether there is disparity in aid allocation funded by the Korean government and sought to answer a number of salient questions on strategies in practice.
Originality: The previous research on aid allocation tends to explore factors and declares that assistance has been allocated to developing countries, with a focus on the level of recipients’ needs and donors’ domestic interests based on the ‘RN-DI model’, whereas it is expected that the findings on aid allocation based on the RN-DI model have been presented with biased results. Hence, this study attempts to build momentum to analyze if there appear to be disparities in aid allocation based on the ‘Recipient Merit’. Furthermore, using the Lorenz curve, this article aims to pursue its relative simplicity to measure and the ability of the Gini Coefficient to offer a single value of overall equity in aid allocation.
Methodology: The framework used to analyze and compare the level of disparities in aid allocation comes from different perspectives: (1) recipients’ needs; (2) donors' interests; and (3) recipients’ merit. It analyzes disparities in aid allocation over a 12-year period (2010-2021) using the three competing frameworks, allowing the relative strategies to be assessed employing the Gini coefficient and Lorenz Curves.
Result: The results indicate that the government has provided foreign aid based on recipients' merits, with discrepancies in aid allocation attributable to governance rather than recipients’ needs and the donor’s interests. Indeed, ODA has been allocated with disparities depending on recipient countries’ level of accountability; the less developed the degree of accountability, the greater the disparities in ODA allocation.
Conclusions and Implication: These findings provide impetus for citizens to agree on an increase in assistance by highlighting that the Korean government has opted to create a gap in aid allocation based on governance quality to increase aid effectiveness and prevent the waste of tax.
Sustainable mangrove management strategy in Sumber Nadi Village, Ketapang District, South Lampung Regency
Authors: Sahasrara Reviana Wanda , Dian Iswandaru  , Idi Bantara  , Indra Gumay Febryano
Published: January 2024

The sustainability of mangrove forests really depends on the involvement of communities in the areas surrounding the mangrove forests. If the mangrove environment is to be used in the long term, it must be managed and preserved. This research aims to determine strategies for sustainable mangrove management in Sumber Nadi Village, Ketapang District, South Lampung Regency. The method used in this research is a qualitative approach. Data was obtained through in-depth interviews involving key informants who were selected and determined using snowball sampling and analyzed using SWOT analysis of Strengths, Weaknesses, Opportunities and Threats, which includes Natural Resources and Human Resources. The results of this research show that the total value of the influence of internal strategies has a value difference of 0.32. Likewise, the external value has a difference of 0.11. Then, combining the two values of the difference between strengths and weaknesses and opportunities against threats, a coordinate point is obtained, namely the coordinate point (0.32; 0.11). The strategy that must be implemented in Sumber Nadi Village, Ketapang, is to support aggressive growth policies (growth-oriented strategy). Mangrove forest management strategies, as in the quadrant above, show a favorable situation. The relevant agencies, management and the community should support this management development strategy so that it can maintain the potential of existing mangroves