bluuebunny/crossref_metadata_2025 huggingface dataset:
MANAGEMENT PLAN FOR RECREATIONAL FISHING IN THE HYDROGRAPHIC ÂNCORA RIVER BASIN
Authors: M. V. Martinho António , Varandas Simone
Published: May 2024

This work is the result of the most recent studies carried out by the ICNF in the drainage basin of the future recreational fishing area (ZPL) of the Âncora river. These supported the design of a plan for the sustainable management and exploitation of recreational fishing in this river basin, which is part of the Minho and Lima Hydrographic Region (RH1). Seven sampling stations were set up for this purpose. Six in the main watercourse and one in the Regueiro dos Enxurros, in the middle of an area of successive waterfalls, just before its confluence with the Regueiro da Lapa Ladrão, which is considered to be the source of the Âncora River. At these stations, hydromorphological quality assessments were carried out on 500 m stretches using the River Habitat Survey (RHS) methodology and fish community monitoring (three per station, for a total of twenty-one inventories) using the electrofishing technique. The results made it possible to consider implementing more sustainable management and exploitation measures for fishing in these continental bodies of water. In this context, the management options took marked account of conservation objectives associated with the presence of European eels (Anguilla anguilla) and red eels (Achondrostoma spp.), the wide distribution of trout (Salmo trutta) and the reduced presence of boga (Pseudochondrostoma duriense) whose distribution in the upper third of this drainage basin is conditioned by a very peculiar geomorphology, filled with numerous slopes, which give rise to beautiful waterfalls. With the information collected, data on the age, growth and physical condition of the ichthyofauna assessed was studied, and their relationship with the different types of habitat in which they occurred was established. The results show that these are watercourses with "Excellent" quality habitats, but with levels of artificialization ranging from "severely modified" to "predominantly unmodified", the result of anthropogenic actions over time. Trout (Salmo trutta) are the most widely distributed species along the main watercourse. The absence of exotic aquaculture species in the samples and the lack of medium to large water impoundment structures in the hydrographic network evaluated should be emphasized. The existing river compartmentalization is materialized by the numerous micro-weirs (many of which allow aquatic organisms to migrate for a good part of the year) and a few waterfalls (natural cascades) that prevent fish from passing through. The trout show isometric growth for all the sampling stations, a balanced physical robustness and a maximum lifespan of 6 years. As a practical result of this study, a Recreational Fishing Management and Exploration Plan for the Âncora River will be created, which will support the design of measures to promote the sustainable management of recreational fishing in the area of the future LPZ, reconciling this activity with nature conservation objectives.
Energy-Efficient Storage System Optimization and Recent Trends in Enhancing Energy Management and Access Microgrid: A Review
Authors: Takialddin Al Smadi , Ayman Al sawalha , Pattanayak Binod Kumar , Khalid Al Smadi , Ahmad Khader Habboush
Published: May 2024

Energy is a vital component of our everyday lives, driving advancements in human development, economic expansion, and efficiency. Implementing sustainable energy storage systems is an economically viable approach to improving energy efficiency and regulating the generation and consumption of power. This study extensively examines energy storage, delving into several techniques, their practical uses, and the most recent progress. It focuses on environmentally sustainable alternatives for the electricity sector, including batteries, flywheels, thermal storage, and pumped hydro storage. The influence of includes compelling case examples, such as using vanadium redox flow batteries in maritime hybrid propulsion systems and advancing portable hydrogen energy storage devices. The results are encouraging, indicating that these technologies have the potential to be adequate replacements for traditional fuel sources, particularly in isolated areas where there is a critical requirement for energy storage. Moreover, this study thoroughly examines the integration options for energy storage in microgrids. It explores the complex aspects of the models, assessment indices, and optimization methods used in designing energy storage systems. This paper explores the capabilities of software used to determine the optimal size for energy storage systems. Furthermore, this study introduces and examines uncertainty analysis in modeling energy storage devices. This state-of-the-art technology has been created to demonstrate the effectiveness of energy storage systems in microgrids, providing crucial data for future progress in the industry.
Pendidikan kesehatan tentang vaksin Covid-19 terhadap pengetahuan sikap dan perilaku pada lansia
Authors: Murwani Arita , Amry Riza Yulina , Sari Fatimah , Julia K Juda
Published: May 2024

Lansia merupakan salah satu sasaran kelompok yang diprioritaskan untuk melakukan vaksinasi Covid-19 , karena mayoritas lansia memiliki penyakit penyerta (komorbid) sehingga apabila lansia sudah terpapar virus Covid-19  maka akan sulit untuk proses penyembuhan apabila sebelumnya belum melakukan vaksin, sedangkan lansia yang sudah melakukan vaksin apabila terpapar virus Covid-19  akan memiliki gejala yang lebih ringan dibandingkan dengan lansia yang belum divaksin. Pendidikan kesehatan merupakan suatu metode yang dapat mendorong dan meningkatkan pengetahuan masyarakat, sedangkan kuesioner merupakan sejumlah pertanyaan tertulis yang digunakan untuk memperoleh informasi atau data secara langsung dari sumbernya, sehingga pendidikan kesehatan ini mampu memberikan perubahan atau informasi baru terhadap pengetahuan, sikap dan perilaku seseorang. Tujuan penelitian adalah untuk mengetahui pengaruh pendidikan kesehatan tentang vaksin Covid-19  terhadap pengetahuan, sikap dan perilaku pada lansia di dusun Jatirejo Weru Sukoharjo Jawa Tengah. Penelitian ini merupakan penelitian pra ekperimen one group pretest and posttest. Responden dalam penelitian sebanyak 33 responden dengan teknik total sampling. Intervensi yang diberikan yaitu pendidikan kesehatan yang dilakukan selama 1 kali dengan durasi 30 menit. Data dikumpulkan dengan pengisian kuesioner dengan analisis data Uji Wilcoxon Signed Rank Test. Berdasrkan uji multivariat diketahui nilai sig untuk pengaruh pendidikan kesehatan tentang vaksin Covid-19 pada lansia adalah sebesar 0,023 < 0,05 dan nilai t hitung 2.390 > t tabel 2.000, sehingga dapat disimpulkan bahwa ada pengaruh yang signifikan antara pendidikan kesehatan tentang vaksin Covid-19  terhadap perilaku lansia di dusun Jatirejo Weru Sukoharjo Jawa Tengah. Kesimpulan yang dapat diambil adalah ada pengaruh pendidikan kesehatan tentang vaksin Covid-19  terhadap pengetahuan, sikap dan perilaku pada lansia.
Kata kunci: Lansia; vaksin Covid-19 ; perilaku; pendidikan kesehatan; sikap
Willingness to Pay Estimation for the Restoration of Water Quality of a Eutrophic Lake
Authors:   Department of Science and Technology Philippines, Research Unit - Philippine Science High School - Main Campus,  Quezon City, Philippines, Villaruel Mc Jervis Soltura
Published: May 2024

Lakes are recognized as highly susceptible to the impacts of various anthropogenic activities, making them one of the most vulnerable aquatic ecosystems. These ecosystems frequently experience degradation due to the lack of policies recognizing the importance of their often overlooked regulating ecosystem services. A contingent valuation approach was employed to assess the stakeholders’ willingness to pay (WTP) for the restoration of the water quality of a eutrophic lake using the case of Tadlac Lake, situated within the municipality of Los Baños, Laguna Province, Philippines. The findings of the study revealed that households in the area expressed a WTP of Php 95.88/household/month or Php 1,150.56/household/year (1 USD=55.89 Php), with 72.30% of respondents indicating their readiness to support efforts to improve the water quality of Tadlac Lake. The likelihood of a positive response significantly varied depending on factors such as the offered price, gender, educational attainment, duration of residency, household size, income, and the method of questionnaire administration (cheap talk vs. non-cheap talk). These results underscore the community’s favorable disposition towards investing in improving Tadlac Lake’s water quality. This valuation study contributes a fresh perspective on lake management strategies. Moreover, it emphasizes the importance of environmental education regarding social-ecological dynamics as a crucial requirement for crafting comprehensive policies that will steer sustainable management of natural lake resources.
Hybrid War: Theory and Ethics
Authors: Boda Mihály
Published: May 2024

Terrorist attacks against the United States and some European states, and the war against terrorism characterised the end of the 20th century from the perspective of international relations. In harmony with this, military theoretical and ethical research aimed at terrorism, insurgency war in general and counterterrorism in this period. Some years later, however, at the beginning of the 21st century, some further questions joined these problems, like the theoretical and ethical issues of hybrid war. This essay deals with the theoretical and philosophical features of hybrid war in order to develop an ethical theory for it.
Convolutional Neural Network Technology and Deep Learning for X-ray Image-Based Pneumonia Identification
Authors: E. Thenmozhi  , Bharath R. K.  , Gokulselvam R  , Anbarasu K
Published: May 2024

Pneumatic systems, which transfer power through compressed air or gas, are used in pneumatic detection to identify certain events or situations. Pneumatic detection systems can benefit from the integration of deep learning, a kind of artificial intelligence, to increase their capabilities in a number of ways. Pneumatic data may be used to train deep learning algorithms to identify patterns. Through the examination of these departures from typical behaviour, anomalies that point to malfunctions or irregularities in pneumatic systems may be identified. Pneumatic data from the past may be used by deep learning algorithms to understand when parts are likely to break. This makes preventative maintenance possible, which lowers downtime and keeps expensive malfunctions at bay. By evaluating sensor data in real-time, deep learning algorithms are able to identify the underlying causes of pneumatic system malfunctions. This can enhance system performance and dependability by assisting professionals in promptly identifying and resolving problems. Pneumatic system characteristics may be optimised using deep learning approaches to increase effectiveness and performance. They are able to instantly adjust system settings to changing operating circumstances by evaluating data from several sensors. Pneumatic data may be analysed by deep learning models to guarantee product quality throughout production operations. They enable early intervention to uphold product standards by detecting flaws or variations from specifications. Huge X-ray image collections are gathered and classified as either normal or pneumonia-infected. To improve the variability of the training set, preprocessing operations may include augmentation methods, normalisation, and picture shrinking to a uniform size. Because CNNs can automatically extract hierarchical characteristics from pictures, they are commonly employed. Variants of VGG, ResNet, Inception, and AlexNet are examples of common designs. These architectures are frequently adjusted or changed to meet the particular needs of the job. Using supervised learning, the CNN model is trained on the labelled dataset. By modifying its parameters to minimise a loss function, usually cross-entropy loss, the model learns to map input X-ray pictures to their corresponding classes (normal or pneumonia-infected) during training.
Percepções de Enfermeiros sobre a Sobrevivência ao Câncer no Brasil
Authors: Santos Antonio Tadeu Cheriff , Lima Fenando Lopes Tavares de , Bosi Maria Lucia Magalhães , Almeida Liz Maria
Published: May 2024

Introdução: No Brasil, há uma discussão incipiente acerca de planos de cuidados e/ou preocupações voltadas para as necessidades dos sobreviventes ao câncer. Objetivo: Compreender a experiência de enfermeiros especialistas em oncologia na prestação de cuidados aos sobreviventes ao câncer. Método: Pesquisa exploratória, com abordagem qualitativa, realizada em dois hospitais públicos e dois hospitais privados localizados em Fortaleza e no Rio de Janeiro. Os dados foram produzidos por meio de um grupo focal realizado presencialmente, em cada cidade, participando 11 e 8 enfermeiros, respectivamente. A análise dos dados foi realizada por meio da análise temática. Resultados: Identificou-se uma compreensão de que o adoecimento por câncer afeta os indivíduos e a sociedade em suas diferentes esferas, destacando-se as interrelações entre as necessidades de bem-estar físico, psicológico, social e econômico, e as dificuldades e o despreparo dos serviços e profissionais para o atendimento integral dessas necessidades. Conclusão: Tais aspectos devem servir como norteadores para reconstrução das políticas e práticas destinadas às pessoas com câncer no Brasil, em especial, na otimização dos processos de cuidados e atenção às necessidades dos grupos de sobreviventes de longo prazo.
Students’ attitudes towars a reading assignment in the ESP classroom
Authors: Marinac Mladen
Published: May 2024

The aim of this paper is to analyze an activity which was implemented in ESPcourses at one higher education institution in Croatia. The purpose of the activity wasthreefold: (1) to encourage extensive reading, (2) to improve vocabulary acquisition,and (3) to promote autonomous learning. This study gives us an insight into students’selection of reading material, choice of new vocabulary (general vs. specific), and theirattitudes towards this task. Thirty-three first- and second-year students of agriculture related study programs have met the requirements of this task. Their responses reveal various reasons for choosing a particular material, namely, book availability and itstopic seem to be the most frequently mentioned reasons. Finally, although studentsdo not appreciate all parts of the assignment (e.g. using dictionaries, technology), themajority of them find the task interesting and beneficial.
CONSTRUCTION DESIGN AND DRIVE SYSTEM ON PLASTIC BOLT PRINTING MACHINE WITH MSME SCALE
Authors: Muhammad Maulana
Published: May 2024

Plastic screw molding machine is one of the important equipment in the manufacturing industry, including micro, small and medium scale (MSMEs). The purpose of this research is to design an efficient and reliable construction and drive system for plastic screw molding machines with MSME scale. This research involved a literature study on printing presses, needs analysis, conceptual design, simulation analysis, prototyping, testing, evaluation, and improvement. Printing machines or molding machines are usually used in large companies, therefore the author intends to make the design and design of printing machines or molding machines simple and can be used by the public at an affordable price. Plastic pellets of the LLDPE type are used for testing the manufacture of plastic bolts using a plastic bolt molding machine that has been designed and made by the author. In this research method the author only discusses component calculations, namely electric motor calculations, pulley calculations, peg calculations, v-belt calculations, and load calculations on the frame. The working system of this plastic bolt molding machine is that first the band heater is turned on first, then the electric motor system is turned on, and after that the LLDPE plastic pellets are put into the container. The plastic pellets will be pushed using a screw which is driven by an electric motor and heated using a band heater, after which the molten plastic pellets come out and immediately enter the mold or molding. In the results of the first test using a temperature of 80 o C and spending 4.36 minutes in a plastic bolt, in the second test using a temperature of 150 o C and spending 2.50 minutes in a plastic screw, and in the third test using a temperature 120 o C and spent 3.30 minutes in one plastic screw.
UJI PERFORMANSI TURBIN ANGIN PROFIL SUDU NACA 0018 SEBAGAI PENGGERAK AERATOR DI TAMBAK UDANG
Authors: Sitorus Rijal B. , Sitorus Tulus B. , Gultom Syahril , Napitupulu Farel H. , Bin Nur Taufiq
Published: May 2024

Letak geografis Indonesia sebagai negara tropis menyebabkan karakteristik angin di Indonesia sangat berbeda dengan karakteristik angin di negara-negara maju yang telah memanfaatkan angin sebagai sumber energinya. Untuk itu perlu mengembangkan teknologi turbin angin sumbu vertikal yang tidak dipengaruhi perubahan arah datangnya angin.Penelitian ini menggunakan model turbin angin sumbu vertikal Darrieus Tipe-H dengan profil sudu NACA 0018,panjang chord (C) 0,4 m, sudut pitch 60 dan jumlah sudu 3 buah. Dimensi turbin angin yaitu diameter (D) 2 m,tinggi (H) 1,5 m dan massa sudu 1,5 kg.Ada 2 buah aerator yang digunakan dalam penelitian ini dengan massa aerator 1,5 kg. Pengujian turbin angin dilakukan pada variasi kecepatan angin yang berasal dari sebuah kipas yaitu 2,2 m/s, 2,6 m/s 3 m/s ; 3,2 m/s, 4 m/s dengan dibebani aerator dan tidak dibebani aerator. Pengujian juga dilakukan di tambak udang dengan kecepatan angin rata-rata 3 m/s. Dari hasil pengujian diperoleh putaran turbin pada saat tidak dibebani aerator dengan variasi kecepatan angin yaitu 12 rpm, 20 rpm, 26 rpm, 30 rpm, 62 rpm dan putaran turbin setelah dibebani aerator yaitu 8 rpm, 12 rpm, 16 rpm, 23 rpm, 56 rpm. Ketika turbin diuji di tambak udang menghasilkan putaran 80 rpm dengan dipasang aerator. Sehingga diperoleh daya turbin secara teori untuk memutar aerator di tambak udang sebesar 7,68 Watt dengan 1 buah aerator terpasang pada kedalaman aerator 2,5 cm dibawah permukaan air.
STUDI ANALISA PERFORMANSI MESIN – SISTEM PEMBAKARAN EFI DAN KARBURATOR PADA MESIN BENSIN
Authors: Hazwi Mulfi , P. Hendri , Sitorus Tulus B. , Nasution Dian M. , UHSG Terang , P. Andianto
Published: May 2024

EFI ( Electronic Fuel Injection ) adalah suatu sistem injeksi bahan bakar yang dikontrol secara elektronik dengan berdasarkan pada masukan sinyal- sinyal dari sensor-sensor yang diolah oleh ECU ( Electronic Control Unit ), yaitu berupa chips yang terdiri dari microprosesor dan memory yang dipasang secara on board pada mobil. Tujuan penggunaan dan pengembangan EFI sampai saat ini adalah untuk meningkatkan tenaga atau daya mesin dan selain itu juga untuk memperbaiki prestasi motor bakar dan mengurangi emisi gas buang. Sistem injeksi bahan bakar berupa EFI ini adalah sebagai pengganti karburator dengan pertimbangan-pertimbangan antara lain : karburator tidak mampu mengalirkan campuran udara-bahan bakar dengan harga perbandingan yang sama untuk setiap silinder, uap bahan bakar yang lebih berat daripada udara maka akan mengalami kesulitan ketika mengalir melalui belokan dan sudut-sudut tajam dari saluran isap ( intake manifold ), dengan sistem injeksi maka bahan bakar dapat dikabutkan langsung kedalam saluran isap dekat dengan katup isap, lebih presisi dalam mengatur jumlah bahan bakar yang dikabutkan sebagai fungsi dari kondisi operasi mesin yang dideteksi oleh berbagai sensor. Berdasarkan hasil perhitungan untuk mesin bensintipe 7K-Carburator diperoleh Daya sebesar 43,1541 kW, Torsi sebesar 117,8 Nm pada rpm 3500, sedangkan untuk mesin 7K-EFI diperoleh Daya sebesar 50,5749 kW, Torsi sebesar 121,8 Nm pada rpm 4000.
ANALISA PENGARUH KEKERASAN DAN STRUKTUR MIKRO TERHADAP KEGAGALAN VELG MOBIL BERBASIS ALUMINIUM ALLOY
Authors: Syahputra Guruh A. , Syam Bustami , Tugiman  , Ariani Farida , Mahadi  , Isranuri Ikhwansyah
Published: May 2024

Velg aluminium mempunyai daerah yang dinamakan area kritis terletak di daerah hub, spoke, dan flange. Kegagalan pada daerah flange,spoke, dan hub dapat mengakibatkan banyakkerugian, baik kerugian dari segi materi maupun dari segi non materi. Tujuan penelitian ini dilakukan untuk dapat mengetahui penyebab terjadinya kegagalan pada velg aluminium alloy dengan pengujian eksperimental dan menggunakan simulasi numerik. Objek penelitian yang digunakan adalah velg mobil aluminium alloy Toyota Corolla Altis dengan diameter 17,5 inci (444,5 mm) dan lebar 7 inci (177,8 mm). Pengujian yang dilakukan adalah uji komposisi kimia, uji kekerasan, uji tarik, uji metalografi. Dari pengujian didapat bahwa komposisi pada material velg merupakan aluminium alloy dengan tipe A413.0. Kekerasan pada material velg di daerah flange yang normal adalah 80,9 skala BHN. Kekerasan pada daerah flange terdeformasi plastis adalah 74,7 skala BHN. Tegangan tarik maksimum adalah 232,990 MPa, elongasinya 5,48 %, tegangan mulurnya 190,334 MPa, Modulus Young 72,199 GPa. Foto mikro dengan 100 x dan 200 x pembesaran mendapatkan porositas pada daerah yang terjadi deformasi plastis. Hasil simulasi numerik velg standar menggunakan Ansys 14.0 Workbench mendapatkan Total Deformation maksimum menunjukkan angka sebesar 0,67475 mm dari bentuk semula.Simulasi Equivalent Stress menghasilkan tegangan maksimum sebesar 71,434 MPa, dan tegangan minimum yang terjadi sebesar 0,073879MPa. Dapat disimpulkan bahwa yang menyebabkan kegagalan pada velg aluminium alloy adalah terjadinya banyak porositas pada daerah yang terdeformasi plastis sehingga menyebabkan kekerasan material berkurang.
Erratum: Agrarian Conflict in the Gunung Leuser National Park Area by the Aceh Refugee Community
Authors: Editor
Published: May 2024

This article has been retracted by Publisher based on the following reason :Requested by Author, because there is unethical data to publish.
PRECIPITATION OF ARSENIC FROM THERMAL WATER
Authors:   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Heydarov A.A.
Published: May 2024

The presented scientific research reveals the results of experiments on the precipitation of arsenic in the form of sulfide (As2S3) from the Daridag thermal water using sodium sulfide as a reagent. The main factors impacting the precipitation of the As2S3 compound were determined: the amount of precipitant (Na2S), the ratio of solid and liquid phases (S:L), pH of the initial solution, precipitation time and temperature, also optimal parameters were obtained. According to the results obtained, the yield during precipitation of arsenic tri-sulfide from from thermal water under certain temperature conditions (t=30-450С, pH=1-2; S:L - 1:1000; = 30-50 min.) were 99.6 %. The properties of the samples were studied by physicochemical research methods (X-Ray, SEM/EDS). X-ray phase analysis showed that the sediment sample obtained under these conditions is X-ray amorphous. The composition and morphology of the obtained sample was confirmed by scanning electron microscopy and spectroscopy (SEM/EDS)
UNIFAC PREDICTION OF VAPOR LIQUID EQUILIBRIA INVOLVING GAMMA-VALEROLACTONE DERIVATIVE SYSTEMS
Authors:   Department of Chemical Engineering, Politeknik Negeri Malang, 64415, Malang, Indonesia, Wibowo A.A. , Mustain A. ,   Department of Chemical Engineering, Politeknik Negeri Malang, 64415, Malang, Indonesia, Mufid M. ,   Department of Chemical Engineering, Politeknik Negeri Malang, 64415, Malang, Indonesia, Hendrawati N. ,   Department of Chemical Engineering, Politeknik Negeri Malang, 64415, Malang, Indonesia, Mustikarini A.W. ,   Department of Chemical Engineering, Politeknik Negeri Malang, 64415, Malang, Indonesia, Altway S. ,   Department of Industrial Chemical Engineering, Vocational Faculty, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia
Published: May 2024

Researchers have studied the hydrogenation of Gamma-Valerolactone (GVL) over Ru/C to produce 2-methyltetrahydrofuran (2-MTHF), a biomass-based platform chemical with potential as a biofuel and green solvent. Other byproducts of this reaction include 2-butanol (2-BuOH), 2-pentanol (2-PeOH), and 1,4-pentanediol (1,4-PDO). In this study, UNIFAC activity coefficient models were used to predict the vapor-liquid equilibrium of several systems included in the process to explain the phase behavior which is important in purification process. The accuracy of the UNIFAC model is tested by comparing the experimental boiling points for the binary system of 2-propanol + 1-butanol and the vapor-liquid equi-librium of the GVL + 2-MTHF system. From this comparison, the Root Mean Square Deviation (RMSD) values for the boiling point measurements are obtained to be 3.153%, and for the liquid and vapor phases in the vapor-liquid equilibrium measurements, the RMSD values are 1.934% and 0.298% respectively. These RMSD values indicate the level of accuracy of the UNIFAC model in representing the experimental data for both boiling point measurements and vapor-liquid equilibrium phase behavior. The prediction results of vapor-liquid equilibrium data for GVL derivative systems showed that the 2-BuOH + 2-MTHF system does form an azeotrope when the mol fraction of 2-BuOH is 0.0031 at 79.780C. The calculation was performed using ChemCAD commercial software for chemical process modeling and simulation
EFFECT OF AN ALKYL SUBSTITUTE ON HYDROCONVERSION OF INDIVIDUAL AROMATIC HYDROCARBONS ON Co/HZSM-5/SO42-–ZrO2 COMPOSITE CATALYST
Authors:   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan, Abasov S.I. , Agaeva S.B. ,   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan, Mamedova M.T. ,   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan, Isaeva Y.S. ,   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan, Iskenderova A.A. ,   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan, Tagiyev D.B. ,   Y.Mammadaliyev Institute of Petrochemical Processes, Ministry of Science and Education  of the Republic of Azerbaijan; M.Nagiyev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan
Published: May 2024

A systematic study of the hydrogenation of individual aromatic hydrocarbons (benzene, toluene, xylene) and their mixtures was carried out at 1800C, H2/Ar=7, WHSV = 2h-1 and atmospheric pressure on a composite catalyst 0.4%Co/HZSM-5/SO42-(2.0%)–ZrO2. It has been established that the developed catalyst has a high hydrogenating ability with respect to aromatic hydrocarbons at low hydrogen pressures. Alkyl-substituted benzenes turned out to be more active. It was found that alkyl substituents increase the activity of hydrogenation of the benzene ring of an aromatic hydrocarbon. According to their conversion, benzene, toluene and xylene form the following sequence: benzene<toluene<xylene. It was found that the optimal temperature for the process of hydroconversion of aromatic hydrocarbons on a composite catalyst is 1800C. The influence of the concentration of the hydrogenating component of the catalyst – Co on the hydroconversion was also investigated. It was found that the optimal concentration of Co is 0.4wt %. It has been established that in a benzene:toluene:xylene mixture, the conversion of benzene in comparison with its separate hydroconversion increases by more than 10%. The hydroconversion of aromatic hydrocarbons is accompanied by the formation of high-octane naphthenic hydrocarbons - cyclohexane, methylcyclohexane and methylcyclopentane. The antibatic change in the yield of CH and MCP with the duration of the experiment shows that the hydrogenation of the aromatic ring is primary and the isomerization of C6H10 to MCP is secondary, i.e. MCP is the result of a sequential transformation. The absence of dimethylcyclohexane (DMCH) in the benzene:toluene:xylene mixture conversion products suggests that the benzene and xylene conversions additionally involve transalkylation
EXPERIMENTAL STUDY OF THE PHASE EQUILIBRIA IN THE SnTe–Sb2Te3–Te SYSTEM
Authors:   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Seidzade A.E. , Orujlu E.N. ,   Azerbaijan State Oil and Industry University, Babanly M.B. ,   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan; Baku State University
Published: May 2024

Phase equilibria of the SnTe–Sb2Te3–Te portion of the Sn–Sb–Te ternary system have been experimentally investigated using differential thermal analysis (DTA), powder X-ray diffraction (XRD), and microstructural analysis methods. Based on the measured experimental results and literature information, isothermal sections at 500 K, liquidus surface projection, and several vertical sections of the phase diagram were plotted. The 500 K phase diagram of this system consists of 2 single-phase regions, 2 two-phase regions, and 3 three-phase regions. The liquidus surface projection is represented by the primary crystallization fields of 5 phases. The primary crystallization fields of all phases, the types, and coordinates of non- and monovariant equilibria were determined. Obtained experimental data can be valuable input for design for Sn–Sb–Te-based alloys
QUANTITATIVE DETERMINATION OF ALUNITE IN ORE AND PRODUCTS OF ITS PROCESSING BY THE DIFFERENTIAL-THERMAL METHOD
Authors:   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Talibli I.A. , Samedzade G.M. ,   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Ibragimova F.S. ,   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Abbasova G.R. ,   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan, Mammadov A.N. ,   M.Nagiev Institute of Catalysis and Inorganic Chemistry, Ministry of Science and Education  of the Republic of Azerbaijan; 2Azerbaijan Technical University
Published: May 2024

The possibility of determining alunite by the derivatographic method according to the area of desulphurization endoeffect on the DTA curve and corresponding to this effect the weight loss on the TG curve has been investigated. It has been proposed to carry out the determination by the calibration curve constructed for standard samples and their area of endoeffect and by the weight loss depending on the content of alunite in the samples, since the dissociation of sulfur bound from 4500C accompanies the whole process. The analysis of samples should be carried out at an intensity of temperature increase of 100C/min, since at an intensity of 300C/min. the peak area increases significantly, and the indicators are not stable. It has been shown that the analyses in an inert medium lead to a twofold loss of sulphur bound, in contrast to the air medium, before desulphurization till the formation of the endoeffect
STUDY OF THE DYNAMICS OF THE PROCESS OF ADSORPTION OF AROMATIC HYDROCARBONS FROM ALKANE
Authors:   Azerbaijan State Oil and Industry University, Babayev R.K.
Published: May 2024

In petrochemistry, normal paraffins are used mainly as raw materials for the production of alkylbenzenes, alkanesulfonates, synthetic fatty acids, secondary alcohols, a-olefins (thermocracking), internal olefins (dehydrogenation). Currently, the market for synthetic detergents (SMC) is one of the most dynamically developing in the world. According to the forecasts of the leading companies producing alkyl benzenes, in the next 10 years, the demand for intermediates for the production of synthetic detergents is expected to grow both in domestic markets and in the global market as a whole. At hydrotreatment units, a wide fraction of n-paraffins (C9–C20) is released from hydrotreated diesel fuel. After that, the C9–C20 fraction is sent to the pre-fractionation unit of the olefin production unit, where the C14–C17 fraction is separated from the wide fraction. This fraction is marketable and requires preliminary purification from aromatic hydrocarbons. Typically, the content of aromatic hydrocarbons in the crude fraction С14+ is from 0.5 to 2.0 wt%. The residual content of aromatic hydrocarbons in the purified fraction should not exceed 0.01% wt. To remove aromatic hydrocarbons, the С14+ fraction is fed to the oleum treatment unit. At the oleum purification unit, post-treatment is carried out using oleum with a concentration of 20–24% wt. After sulfonation, it is necessary to neutralize with caustic soda. Obtaining dearomatized liquid paraffins from diesel fuel using oleum purification has many disadvantages, since working with fuming sulfuric acid requires a high degree of protection of the human body and the strictest observance of safety regulations. Due to the difficulties in disposing of spent sulfuric acid, plant shutdowns and downtime are not uncommon. This article presents the results of a comprehensive study of the adsorption of aromatic hydrocarbons from higher alkanes on zeolite CaX. The main parameters of statics, dynamics and kinetics of adsorption are determined
HYDROGEN SULFIDE CORROSION INHIBITORS AND BIOCIDES BASED ON FUNCTIONALLY SUBSTITUTED ALKENILPHENOL DERIVATIVES
Authors:   Baku State University, Mehdiyeva G.M. , Bayramov M.R. ,   Baku State University, Agayeva M.A. ,   Baku State University
Published: May 2024

The article presents the results of gravimetric anticorrosion studies of 1-alkenyl-2-propargyloxy- and 1-alkenyl-2-propargyloxy-3-aminomethylbenzenes on Ct.3 steel in water- salt and hydrocarbon media saturated with hydrogen sulfide (500 mg/L), as well as the study of their bactericidal properties against sulfate-reducing bacteria. The dependence of the protective properties of these compounds on their structure was revealed. It has been established that 1-propenyl-2-propargyl-3-diethylaminomethylphenol has the best properties. At the concentration 50 and 100 mg / L in an aggressive, saturated H2S environment, 3% aqueous solution of NaCl and kerosene (9:1 vol), the degree of protection of St.3 steel against corrosion is 94.7 and 97.5%, (at 250C) and 88.0 and 94.6% (at 400C), respectively.The studied compounds also have bactericidal properties, especially compounds containing in the structures, in addition to the alkenyl and propargyl substituents, also a morpholinomethyl fragment. At its concentration 50 and 100 mg/L, the degree of protection is 96–100%.
DIGITAL MANAGEMENT OF ENTREPRENEURIAL ACTIVITIES
Authors:   State University of Trade and Economics, Husarevych Nataliia , Smyrnova Iryna ,   Danube Institute National University “Odesa Maritime Academy”, Papp Vasyl ,   Mukachevo State University
Published: May 2024

The relevance of the study is driven by the gradual transition of management processes in entrepreneurial activities into the digital realm. Consequently, the article focuses on defining the characteristics of the effectiveness of digital entrepreneurial management. Within the article, the main characteristics of digital entrepreneurial management and the fundamental principles of its effectiveness are defined. The article delves into defining the essence of digital twins of business processes within effective digital entrepreneurial management. The article provides a virtual representation of the business ecosystem through digital twins of business processes. The research findings demonstrate that for effective digital entrepreneurial management, it is crucial to orient all aspects toward targeted and continuous influence on appropriate digital infrastructures. According to the provided points, the prospects for further research lie in examining the opportunities and challenges associated with implementing digital infrastructure in the operation of the entrepreneur's core business.
CONTEMPORARY CASES OF DIGITAL PRODUCT ASSORTMENT MANAGEMENT IN AN INTERNET SHOP
Authors:   Lviv Polytechnic National University, Kulinich Tetiana
Published: May 2024

Within the outlined research, the main focus is on economic entities that operate not just as retail merchants but conduct their activities through various types of Іnternet-shops. It has been proven that effective management of their product assortment is crucial. While this process is characterized by the ability of the curated set of products or services to meet customer demand over an extended period, what is critically important is precisely the effective management of their product assortment, which distinguishes the ability of the curated set of products or services to satisfy customer demand over an extended period. According to the above, the purpose of the article is to specify and analyze contemporary cases of digital assortment management across basic types of Internet shops. Within the study, attention is drawn to the fact that digital technologies are significantly changing the paradigm of product assortment management in Internet shops and are providing new opportunities that open up a wide range of strategies and approaches in this area.
OKR AS TOOL OF STAFF EFFICIENCY IMPROVEMENT
Authors:   “KROK” University, Naumova Olena , Kopyl Andrii ,   “KROK” University
Published: May 2024

The article examines the management system of setting objectives and evaluating the key results as one of the factors in improving employee satisfaction and effectiveness. The relevance of the research topic is justified by the current negative situation in the labor market of Ukraine and its continued stagnation, which negatively affects businesses. This trend requires companies to implement new tools to increase employee satisfaction and enhance employee effectiveness. This article investigates how implementing the OKR management system increases employee effectiveness. The scientific results obtained are practical proof of the direct impact of clear and understandable objective setting on employee performance, which directly influences the organization's achievement of its strategic goals. The importance of periodically evaluating and reviewing established goals and key results has been identified.
DETERMINATION OF ECONOMIC SECURITY RISK ZONES OF ENTERPRISES OF THE ELECTRIC ENERGY SECTOR OF THE ECONOMY OF UKRAINE
Authors:   Vadym Hetman Kyiv National Economic University, Liezina Anastasiia
Published: May 2024

The article examines the issue of the impact of risks on the formation and provision of economic security of enterprises in the electric power industry of Ukraine. Currently, the global economic crisis is dictating the conditions for the economies of almost all branches of industry, and for our country, waging war, on the one hand, had a negative impact on the economy of Ukraine, its investment attractiveness, on the other hand, the help of partners in response caused a chain reaction in the world financial system. The main goal of the electric power company is to increase competitiveness by providing high-quality electricity supply services, ensuring reliability and uninterrupted service for all types of persons (including legal consumers and the public). As a result of the analysis, the article presents the peculiarities of non-linear and open systems of electric power enterprises, which are prone to changing stages of stability and instability, namely the formation of four phases of functioning. This helped the author to form a model of comprehensive assessment of the economic security of an electric power enterprise and to present a system of indicators for its provision. This model is based on the identification of threats and the level of economic security, which will further be the object of enterprise research using a system of economic security indicators. The construction of a system of indicators of the economic security of an electric power enterprise is based on the following criteria: coverage of the most important markets and institutions; analytical significance; found usefulness; significance of institutions or crisis situations; accessibility; symmetrical display of information at the sector level; use of aggregated information; the use of a consolidated approach in order to avoid double accounting of the entity's capital and activity. The main indicators for determining the economic security of business entities have also been formed, which include a number of internal and external components. Thus, each of them includes a list of tools that, based on the aggregate results, certify the achievement of the appropriate level of economic security of the electric power enterprise.
THEORETICAL AND PRACTICAL OVERVIEW OF CONSUMER PRICE INDICES IN THE REGIONS OF UKRAINE (FOR MARCH 2024)
Authors:   Simon Kuznets Kharkiv National University of Economics, Bril Mykhailo , Rudenko Viktoriia ,   Simon Kuznets Kharkiv National University of Economics, Druhova Olena ,   Simon Kuznets Kharkiv National University of Economics
Published: May 2024

The article provides a comprehensive examination of the Consumer Price Indexes (CPI) in various regions of Ukraine as of March 2024. It combines theoretical insights into the methodology of CPI calculation and the factors influencing it with a practical analysis of price dynamics across different regions. Theoretical aspects encompass the purpose of CPI as an economic indicator reflecting changes in the cost of a basket of goods and services consumed by the population. The study delves into various methods of CPI calculation, including price weighting, selection of the base period, and other technical aspects affecting the obtained indices. Attention is devoted to factors influencing price dynamics such as changes in exchange rates, price policies, and other economic and political factors. The practical part of the article focuses on analyzing the CPI dynamics in different regions of Ukraine for March 2024. This analysis allows for the identification and examination of key factors influencing price dynamics in different parts of the country. Different regions exhibit specific characteristics, which are taken into account during the analysis, including the level of economic development, production and consumption structure, sectoral specificity, demographic, and socio-cultural features. The CPI dynamics reflect the degree of influence of these factors on the price situation in each specific region. The article also highlights the analysis of potential consequences of price changes for the population and the economy as a whole. A high level of inflation can negatively affect the purchasing power of the population and the overall state of the economy. Therefore, timely monitoring and management of price dynamics in the regions are essential for ensuring stability and effective functioning of the economy. The general conclusion of the article aims to reflect the results of the CPI dynamics analysis in the regions of Ukraine for March 2024 and provide recommendations for managing the price situation in the country. The relevance of the study lies in the importance of ensuring economic stability and growth in the conditions of economic instability and uncertainty.
THE CONCEPT OF BRAND MARKETING IN THE COMPANY'S ACTIVITIES: FOREIGN EXPERIENCE AND UKRAINIAN REALITIES
Authors:   Chernivtsi Institute of Trade and Economics of State University of Trade and Economics, Vdovichena Olha
Published: May 2024

This article aims to highlight the concept of brand marketing in the activities of enterprises, focusing on a comparative analysis of foreign experience and Ukrainian realities. In the context of the modern consumer market, characterized by fierce competition between brands, the importance of sustainability and competitiveness for businesses is of particular importance. The paper notes that building strong brands is a key element of a successful strategy, after which it is necessary to create the right image that will help build trust, reliability and quality for consumers. The paper analyzes the main goals of brand marketing, as well as the importance of rational and emotional beliefs of consumers in building a successful brand. Special attention is paid to the process of creating a brand and its integration into society through the development of an image and promotion strategy. It is noted that in order to achieve maximum effect and maintain long-term success, it is necessary to implement a number of strategic measures, including the development of a system of communication with the audience, pricing policy and consideration of the emotional characteristics of the brand. In addition, it has been determined that the importance of brand social responsibility in the context of the modern business environment is growing, with European and American companies focusing on environmental friendliness, transparency, and brand citizenship. This situation has also affected the adaptation of Ukrainian brands to global trends, but in the context of the war, Ukrainian consumers are encouraging brands to design goods and services based on national identity, social position, and volunteerism. Thus, the article reveals the key aspects of the brand marketing concept, explores their application in the Ukrainian context and compares them with international experience, which contributes to the understanding and improvement of the brand development strategy in the domestic and foreign markets. The author concludes that the concept of brand marketing is extremely relevant for modern Ukrainian enterprises operating in a competitive environment and seeking to obtain and attract the attention of consumers.
THE EVOLUTION OF CORPORATE SOCIAL RESPONSIBILITY SYSTEM
Authors:   Institute for Demography and Life Quality Problems of the National Academy of Sciences of Ukraine, Sova Olena , Kuznietsov Vladyslav ,   Taurida V.I. Vernadsky National University
Published: May 2024

The pandemic and the post-Covid period, military actions on the territory of Ukraine have changed the orientations in the strategic planning of business entities. Entrepreneurs have become more socially responsible and environmentally conscious participants in the global economy. In the conditions of geopolitical and cultural transformations, they felt their important role in the formation of a strong civil society. The article examines modern aspects of corporate social responsibility (CSR) as a relevant component of enterprise management. The periods of formation and development of CSR are systematized, citing the authors of the main works of that time and the main ideas of doctrines. The limitations of each stage of evolution during the transition to the next one are defined. The conducted research proves that CSR is a complex multi-component system, the elements of which are able to stimulate the sustainable development of the ecosystem, contribute to social stabilization and environmental restoration. Creating a favorable environment for prosperity means not only supporting economic growth and entrepreneurship, but also ensuring equal opportunities, improving the quality of life, and investing in human capital. The authors characterized the theoretical foundations of CSR formation, highlighting approaches and concepts based on object-functional analysis. Practical recommendations for the effective use of CSR are offered, such as professional trainings, social and charitable missions, support for educational and cultural initiatives, implementation of environmental projects, energy saving and food security programs, cooperation with local communities, etc. CSR becomes a kind of catalyst for enterprises that seek to play a positive role in society and contribute to the development of the future welfare of nations. The decisive role of CSR in ensuring the competitiveness and successful development of enterprises in harmony with nature and achieving social progress of society in today’s globalization conditions has been confirmed.