bluuebunny/crossref_metadata_2025_split huggingface dataset:
Development of risk-based inspection of 28-years-old subsea sales gas pipelines to support the energy demand
Authors: Soedarsono Johny , Wijaya Arie , Aditiyawarman Taufik , Kaban Agus , Riastuti Rini , Ramdhani Rizal Tresna , Ayende Ayende 
Published: May 2023

In the oil and gas industry, maintaining the integrity of production equipment is critical to ensuring the industry’s sustainability. Failure to maintain the integrity of production equipment can result in financial losses for the business. The management of production equipment nearing the end of its design life faces an increasing cost of Inspection, Maintenance, and Repair (IMR). As a result, a strategy to improve the efficiency of IMR is essential. Recent IMR management practices include predictive Risk-Based Inspection (RBI), which is more efficient than Time-Based Inspection (TBI). The research intends to evaluate the 28-year-old subsea sales gas pipeline using API 581 standard quantitative methodology by utilizing the Inline Inspection (ILI). Specifically, the study focuses on measuring the Probability and Consequence Failure of inspected pipelines. The inspection interval is determined based on the minimum allowable thickness. The risk calculation indicates that 12 pipeline segments are at a medium risk level (3 segments, 1D and 1E, and 2C). The remaining nine segments remain at lower risk (1C). Based on the result, segment nine is accepted as the highest PoF value of 1.04E-4 failures per year due to high depletion values due to the higher CoF value at the leak location. The calculation of the inspection interval indicates that the forthcoming Inspection will be due 20 years post the previous assessment. Another method using the Estimated Repair Factor (ERF) thickness limit approach produces the same results. However, assessment using ASME B31.8S provides different results of 10 years intervals when using the same ILI inspection method. This work can be used as a standard guideline to assess the risk of pipelines over a decade in service
Improving the manufacturing technology of sensing gas sensors based on zinc oxide by using the method of magnetron sputtering on direct current
Authors: Miasoiedova Alona , Minska Natalia , Shevchenko Roman , Azarenkо Olena , Lukashenko Viktoriia , Kyrychenko Oksana , Zemlianskyi Oleh , Trefilova Larisa , Kamyshentsev Gennady , Melezhyk Roman 
Published: May 2023

A gas sensor based on zinc oxide obtained by magnetron spraying at direct current was investigated. There are methods of deposition of zinc oxide nanostructures such as thermal evaporation, chemical vapor deposition, organometallic chemical vapor deposition, magnetron sputtering, pulsed laser deposition, and hydrothermal process. The least investigated is magnetron sputtering. To obtain films, a vacuum unit VUP-5M with an original material-saving magnetron was used. Studies into the sensitivity and speed of the gas sensor based on ZnO with respect to the target gas – ethanol of different concentrations – were carried out. The resulting experimental dependences of the sensitivity of the gas sensor on the concentration of the target gas demonstrate that with increasing concentration of the target gas, the resistance decreased while the sensitivity of the sample increased. It was established that the change in the resistance of the test sample is proportional to the change in the concentration of the target gas. After the sensor surface becomes saturated with adsorbed molecules, the resistance no longer decreases, even if the gas concentration continues to increase. The reaction of the gas sensor to the target gas – ethanol – at concentrations above 150 ppm was almost absent. The time required to achieve the maximum response value should be lower at higher target gas concentrations. Sensitivity reaction repeatability studies were conducted to measure the resistance of a gas sensor based on ZnO in a target gas atmosphere with a concentration of 150 ppm. It was found that the gas sensor demonstrates excellent stability and consistent sensitivity reaction when re-exposed to the target gas – ethanol. It was established that the reaction time of a gas sensor based on ZnO to the target gas at each repeated exposure does not exceed 10 s. This repeatability index allows us to assert the stability of the ZnO-based gas sensor in an ethanol atmosphere under standard conditions
Case study of shear strengthening of RC Corbels by steel plates using fea
Authors: Hashim Doaa Talib , Abdulghani Ali Wathiq , Albegmprli Hasan Mohammed Ahmed 
Published: May 2023

The study aimed to explore the possibility of strengthening RC corbels with many strengthening techniques. The research analyzed the RC corbels behavior under a wide range of variables. The theoretical study consisted of twelve models reinforced with GFRP bars with strengthening by steel plate. Finite element analysis with ANSYS APDL was used to verify five specimens. This research deals with a static nonlinear FE simulation to investigate the behavior of RC Corbels reinforced internally and externally. The verification with experimental work demonstrated a satisfactory agreement in the load-displacement relationship, ultimate load and displacement, and failure mode. The parametric study was implemented which included strengthening the four concrete corbels externally and four corbels internally by a steel plate in many configurations while the remaining three were modeled with varied compressive strength (30, 40, and 50) MPa. The external strengthening included the placing of steel plate externally around the corbel in a U-shaped form and partial strengthening by strips and bottom plate. The models with internal strengthening involved placing the steel plate internally instead of stirrups. The results discovered that the strengthening provided enrichments in the stiffness, ductility, and energy absorption by 37 %, 4 %, and 26 %. In addition, in the case of full external strengthening more than internal retrofitting, there is a maximum improvement in the cracking and ultimate load carrying capacity. The external strengthening was better than internal one due to the confinement effect of the concrete. The stress distribution and crack pattern were affected by the strengthening techniques and more cracks appeared in the corbels with external steel plates.
Development of a multilingual intelligent project planning and monitoring system
Authors: Teslia Iurii , Yehorchenkova Nataliia , Yehorchenkov Oleksii , Khlevna Iulia , Kataieva Yevheniia , Klievanna Ganna , Khlevnyi Andrii , Latysheva Tatiana , Ivanov Ivan , Sazonov Anton 
Published: May 2023

The object of research of this work is the processes of project planning and monitoring. The solved problem is the development of a model, method and structures of a multilingual intelligent project planning and monitoring system and its experimental verification of the ability to understand the statements of managers in different languages.
The requirements for such a system are formulated. An analysis of the existing theoretical and practical developments in this area was carried out. It was established that there are no developments in the field of project management that can adapt to new natural languages. It was found that the formulated requirements can be satisfied within the framework of the reflexive approach. It is characterized by simplicity, continuity, and insensitivity to errors in natural language statements. To confirm these assumptions, an experimental multilingual project planning and monitoring system and experimental research methodology were developed.
The results of the experiments obtained during the use of the created experimental system testify to the correct identification of the content of appeals to the intellectual system in 6 languages with a probability higher than 0.99, and to recognize the structure of statements with a probability higher than 0.98. And the time for configuring the system to work with a new language did not exceed 1 hour. This allows to use it for practical work in distributed management systems for remote interaction of managers and specialists with the system in different languages.
The conducted experiments confirmed the assumption about the effectiveness of the reflexive approach for creating project management systems.
The developed model, method, structures, and system can be used for different types of projects, such as regional development projects, IT, etc.
Determination of the aerodynamic characteristics of a wind power plant with a vertical axis of rotation
Authors: Tanasheva Nazgul , Tleubergenova Akmaral , Dyusembaeva Ainura , Satybaldin Amangeldy , Mussenova Elmira , Bakhtybekova Asem , Shuyushbayeva Nurgul , Kyzdarbekova Sholpan , Suleimenova Saniya , Tussypbayeva Ardak 
Published: May 2023

Wind energy is a commercially proven and rapidly developing type of electricity generation. Wind power plants with a vertical axis are more attractive and better suited for use in cities and urban environments where wind flow is less predictable compared to widespread wind power plants with a horizontal axis of rotation. This makes them a much better choice for both ground installation and/or for mounting on buildings and roofs that would otherwise limit the installation of higher horizontal turbine structures.
The paper describes an experimental study of the drag force and its coefficient for wind turbines with a vertical axis of rotation. The object of the study is a laboratory model of a wind turbine with blades made in the form of rotating cylinders with a fixed blade. Experimental studies were carried out in the T-1-M wind tunnel, measurements of aerodynamic force were carried out using three-component scales. A distinctive feature of the work is the combined use of the lifting force of the cylinders, as well as the lifting force of the fixed plate. Due to this solution, when comparing with existing wind turbines with a vertical axis of rotation, it was found that the wind turbine in question prevails by 25‒100 % in the number of revolutions. The dependences of the drag force on the flow velocity and the drag coefficient on the Reynolds number from 1·104 to 4·104 are obtained. An uncertainty analysis was also carried out in order to determine the uncertainty by type A, B and the total uncertainty, from which it was found that the measurement error was 1.13 %. The field of the practical application of the results obtained in laboratory studies will be useful in the development of prototypes of wind turbines with a vertical axis of rotation
Determination of the ballistic performance ramie-fiber-reinforced epoxy composite-sic ceramic in multilayered armor system
Authors: Mukhammad Alaya Fadllu Hadi , Rusnaldy Rusnaldy , Ismail Rifky , Riyadi Tri Widodo Besar 
Published: May 2023

Multilayered Armor System (MAS) is being extensively studied around the world for its ability to retain ceramic fragmentation after a collision occurs. MAS consist of a ceramic layer placed at the front and supported by a composite layer of ramie-fiber-reinforced epoxy resin. Present study utilizes natural fibers of 50 % ramie fibers with epoxy resin as the matrix and Silicon Carbide (SiC) ceramic as the front panel. The ballistic testing in this study used 7.62×51 mm NATO Ball projectile with a firing distance of 15 m from the bullet panel. The velocity of projectile was detected using LIGHT SCREEN B471 type. The aim of the study is to conclude the optimal thickness of ramie fiber-epoxy and SiC ceramics MAS structure based on experiments which can withstand 7.62 NATO ball bullet penetration. To achieve this aim, the following objectives are accomplished: study the effect of SiC ceramic addition to ramie composite on BFS and study the effect of SiC ceramic addition to ramie composite on failure mode. Results show that the addition of the number of layers of SiC increases resistance of ballistic MAS marked by a decrease in the value of BFS clay. The 5SiC+10R is the optimal thickness in resisting the penetration of 7.62×51 mm bullets with 12 mm BFS clay. Failure phenomena found in this study were projectile fragments, matrix cracks, radial cracks, impact points, and ceramic fragments. Matrix crack formation appears on 5SiC+10R with mini deformation in rear side. Phenomenon of ceramic fragmentation in the shot causes the MAS structure to be damaged, so that the ramie fiber composite layer will face the bullet directly if it is subjected to a second shot. Ultra High Hardness Armor (UHHA) as first layer on the MAS structure is an attractive option for further research.
Development of the spectrophotometric method for the determination of rosuvastatin in tablets by using bromophenol blue
Authors: Halka Liudmyla , Kucher Tetyana , Kryskiw Liubomyr , Piponsk Marjan , Furdela Iryna , Uglyar Tetyana , Poliak Olha , Logoyda Liliya 
Published: May 2023

The aim of the work was to develop a spectrophotometric method for the determination of rosuvastatin in tablets based on the reaction with BPB in compliance with the principles of «green» chemistry.
Material and methods. Analytical equipment: two-beam UV-visible spectrophotometer Shimadzu model -UV 1800 (Japan), software UV-Probe 2.62, electronic laboratory balance RAD WAG AS 200/C. The following APIs, dosage forms, reagents and solvents were used in work: pharmacopoeial standard sample (CRS) of rosuvastatin calcium (Sigma-Aldrich, (≥ 98 %, HPLC)), BCG (Sigma-Aldrich, (≥ 98 %, HPLC)), "Rosuvastatin" tablets 10 mg, 15 mg, 20 mg, methanol (Honeywell, (≥ 99.9 %, GC)), ethanol (Honeywell, (≥ 99.9 %, GC)), chloroform (Honeywell, (≥ 99.9 %, GC)), acetonitrile (Honeywell, (≥ 99.9 %, GC)), and ethyl acetate (Honeywell, (≥ 99.7 %, GC)).
Results and discussion. A spectrophotometric method for determining rosuvastatin by reaction with BPB in an acetonitrile solution using the absorption maximum at a wavelength of 595 nm has been developed. Stoichiometric ratios of reactive components were established, which were 1:1. The developed method for the quantitative determination of rosuvastatin was validated following the requirements of the SPhU. The analytical method was linear in the 7.99-23.97 μmol/L concentration range. The LOD and LOQ values were calculated to be 0.77 µmol/L and 2.36 µmol/L. According to the «greenness» pictogram of the analytical method using the AGREE method, the score was 0.77, indicating that the proposed spectrophotometric method for determining rosuvastatin was developed in compliance with the principles of «green» chemistry.
Conclusions. An eco-friendly spectrophotometric method has been developed to quantitatively determine rosuvastatin in tablets based on the reaction with BPB. The appropriate sulfophthalein dye (BPB) and its concentration (4.00 x 10-4), the optimal eco-friendly solvent (acetonitrile), and the appropriate wavelength (595 nm) were chosen, and the sensitivity of the reaction was calculated. The analytical method was validated, and its possibility for use in the pharmaceutical analysis was shown
Reliability increase of resonance induction heating units during the fault conditions
Authors: Kalynichenko Denys 
Published: May 2023

Purpose. To develop an automatic protection system against fault operation conditions for the resonant inverter of the induction heating unit due to absence of load.
Methodology. Resonant inverter load transfer function analysis using the first harmonic approximation, calculation of control parameters using numerical methods, computer simulation of induction heating unit. Experimental studies based on a smelter with microprocessor control in order to check the adequacy of the proposed model and protection system.
Findings. A computer model of the induction heating unit is presented, the adequacy of which was verified by the experimental results of the induction melting unit. By using this model, circuit protection circuit of the resonant inverter against low load conditions is developed, which is based on the shift of the inverter operating frequency due to the introduction of an additional shift of the phase difference between current and voltage in the feedback loop. The methodology for calculating this phase shift was created using the load transfer function of the inverter (‘capacitor bank-inductor-part’ system) and numerical methods for solving equations. The above calculation method can be used for resonant inverters of any configuration and topology. According to the computer simulation of the induction heating unit operation during fault, the developed system limits the voltage amplitude within the safe operating region of the inverter reactive elements, while in normal operating conditions the protection system does not affect the operation of the unit. The protection system successfully keeps the amplitude of current and voltage in the oscillating circuit within safe limits during low loads. The created system is simple enough for its quick implementation in existing digitally controlled units and has high speed.
Originality. Methodology to create voltage limiting system for resonant inverters of any configuration with frequency control has been developed.
Practical value. Developed protection system allows to reduce induction heating process interruption by the user. Moreover, protection system increases fault tolerance of induction heating units. Structure of proposed protection system simplifies the modernization of existing units and the development of new models using such system.
Entorno experimental big data integrando devops en el ciclo de entrega de software
Authors: Angulo-Angulo Charlie 
Published: May 2023

Sin duda las generaciones de grandes volúmenes de datos de diferentes fuentes han permitido a las organizaciones obtener valor y conocimiento a partir de los datos generados. Por ello, las empresas necesitan a especialistas que sean capaces de digerir esos datos y convertirlos en información útil. Un tema importante es la manera en que los estudiantes pueden adoptar el conocimiento teórico de manera práctica en entornos big data, tecnologías en la nube y herramientas demandadas en el mercado evitando configuraciones extensas.
En este artículo se crea un entorno experimental de big data, describiendo el concepto como tal, sus arquitecturas de referencia y componentes, diseñando e implementando una arquitectura para un clúster de procesamiento de datos distribuido, integrando Devops en un flujo de entrega continua de software; mediante un despliegue automatizado big data procesing de infraestructura como código en la nube.
Holistic rehabilitation of cochlear implant users: using the International Classification of Functioning, Disability and Health
Authors: Lorens Artur , Mertens Griet , Kurz Anja , Anderson Ilona 
Published: May 2023

BackgroundThe purpose of this article is to propose how the International Classification of Functioning, Disability and Health (ICF), particularly the ICF core sets for hearing loss, can be used to plan and evaluate the holistic (re)habilitation of cochlear implant recipients.Material and methodsThe opinions of HearRing experts were gathered on what – based on their clinical experience – are the most relevant ICF categories and codes to describe audiological rehabilitation after cochlear implantation. For each ICF category, the most commonly used audiological assessment tools and methods were identified.ResultsThe most relevant codes for <i>Body functions and structures</i>, <i>Activities and Participation</i> as well as <i>Environmental factors were identified</i>. These were the following. <i>Body structures</i>: structure of the inner ear (s260), auditory nerve (s260), brainstem (s1105), midbrain (s1101), diencephalon (s1102), and cortical lobe (s110). <i>Hearing functions</i>: sound detection (b2300), sound discrimination (b2301), localization of sound source (b2302), lateralization of sound (b2303), and speech discrimination (b2304). <i>Activities and participation</i>: listening (d115);
communicating with (receiving) spoken messages (d310); handling stress and other psychological demands (d240); using communication devices and techniques (d360); conversation (d350); family relationships (d760); school education (d820); paid employment (d850); and community life (d910). <i>Environmental factors</i>: sounds (e250), products and technology for communication (e125), immediate family (e310), attitudes of immediate family members (e410), societal attitudes (e460), health professionals (e355), and health services, systems, and policies (e580).ConclusionsUsing the ICF can help target the holistic (re)habilitation of cochlear implant recipients. By providing a common language, it can enable clearer communication across disciplines, and closer comparison between different studies, which is essential for meta-analyses.
Visually supported short-term auditory memory in children with developmental language disorder (DLD)
Authors: Bryłka Martyna , Cygan Hanna 
Published: May 2023

BackgroundDevelopmental language disorder (DLD) is an impairment that disturbs the ability to acquire and make use of native language. The exact cognitive and neuronal brain underpinnings of the disorder are still a matter of investigation.Material and methodsThe relationship between the audiovisual phonemic short-term memory and particular language abilities was examined among 7–9 year-old children with DLD as well as in a gender, age, and IQ-matched control group. Children were assessed with a standard language battery and the Stanford–Binet scale (SB5). Subsequently, they performed a short-term memory task requiring immediate recall of sequences composed of syllables presented audiovisually.ResultsThere were lower levels of audiovisual phonemic memory among children with DLD. They performed significantly worse than matched typically developing (TD) children in the experimental task and their performance was correlated with scores obtained in each
language subtest. In contrast, we did not find between-group differences in visual short-term operational memory measured on the SB5 scale.ConclusionsThe present experiment replicated previous findings about short-term phonemic memory impairment in the DLD population. We found that memory impairment also occurs even if phoneme information is presented simultaneously in the auditory and visual domains.
It appears that non-linguistic spatial cues accompanying phoneme stimuli do not overcome phonemic short-term memory impairment.
Diseño de una plataforma digital para el ahorro de agua
Authors: RIVEROS CLAVIJO JULIAN ANDRES 
Published: May 2023

Este documento narra la experiencia de diseñar una plataforma digital y ludificada con el fin de generar consciencia y hábitos sobre el consumo racionalizado de agua en un grupo de estudiantes de colegios públicos en la región del Guavio, del departamento de Cundinamarca, Colombia, durante el año 2015-2016. Reconstruye el camino metodológico para el diseño de la plataforma digital y basada en el Pensamiento de Diseño. Concluye reflexionando sobre los resultados de la experiencia en el impacto en la población participante, su alcance y la posibilidad que tiene para rediseñar relaciones ontológicas, concluimos haciendo un fuerte énfasis en la necesidad tanto de incluir antropólogos en la empresa privada, como hacer de esta parte activa en los procesos de transformación social.