bluuebunny/crossref_metadata_2025 huggingface dataset:
Rapid synthesis of trimetallic alloy PtPdNi nanosponges: structural, morphology and catalytic performance
Authors:   Nano-Optoelectronic Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, 11800 Minden, P. Pinang, Malaysia, Abdul Razak M. A. , Johan Ooi M. D. ,   Nano-Optoelectronic Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, 11800 Minden, P. Pinang, Malaysia, Yusof Y. ,   Nano-Optoelectronic Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, 11800 Minden, P. Pinang, Malaysia, Jubu P. R. ,   Department of Physics, University of Agriculture Makurdi, P.M.B. 2373, Makurdi, Benue State, Nigeria
Published: April 2023

Pt alloy nanostructures have been explored as promising anode catalysts for methanol oxidation reaction. However, the Pt catalyst have continued to face challenges that are yet to be resolved. Studies have shown that the size and geometric structure can influence a material’s catalytic activity and is related to the synthesis technique. In this study, PtPdNi nanostructures were produced at different synthesis duration. FESEM results show that all the samples exhibited nanosponges structure. The PtPdNi synthesized for 150 s, exhibited higher catalytically active toward methanol oxidation and resistance to carbon monoxide poisoning.
Application of pani/metal oxide composite as an active material of liquified petroleum gas sensors
Authors:   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Putri N. P. , Wibowo S. R. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Maulida L. N. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Suaebah E. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Rohmawati L. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Ermawati F. U. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia, Supardi Z. A. I. ,   Physics Department, Faculty of Mathematics and Sciences, Universitas Negeri Surabaya, Ketintang, Gayungan, Surabaya 60231, Indonesia
Published: April 2023

Polyaniline (PANI) and metal oxides are two materials that have various applications, including active sensors. PANI provides several benefits over other conductive polymers, including ease of synthesis, affordability, and high conductivity. Depending on the benefits of PANI, here we report the fabrication of PANI/metal oxide composites as an active material for gas sensors, especially LPG. By oxidatively polymerizing aniline at room temperature, PANI was formed. PANI/metal oxide composites were produced by using an in-situ polymerization technique. The PANI/MgO and PANI/ZnO nanocomposites were successfully fabricated, as shown by FTIR and XRD characterization results. The sensitivity of PANI/metal oxide nanocomposites to LPG has been proven. The result shows that PANI/metal oxide sensitivity is better than barePANI/MgO, which is one of the kinds of metal oxide used. Several concentrations of gas were used at low ppm: 50, 100, and 200 ppm to identify the sensitivity of PANI. The size of the pores with a radius of 285 Ă of the PANI/MgO nanocomposite shows that the value sensitivity was improved. The PANI/MgO nanocomposite has the best sensitivity to LPG exposure because it works well at all concentrations.
Hydrogen production from hydrolysis of NaBH4-NH3BH3 composite catalyzed by porous spherical Co3O4
Authors:   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Yang M. , Wu Y. C. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Liu Y. H. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Li Z. H. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Cheng M. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Wu C. L. ,   Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Sichuan University, Chengdu 610065, PR China, Feng W. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China, Cai W. T. ,   School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, PR China, Wang X. L. ,   School of Mechanical Engineering, Chengdu University, Chengdu 610106, PR China
Published: April 2023

NaBH4-NH3BH3 composite (xSB-AB, x is the molar ratio of SB to AB) has better hydrolysis performance than its monomer, but the hydrogen generation rate (HGR) and hydrogen yield (HY) are still not ideal at room temperature. In this work, a low cost and easily available commercial porous spherical Co3O4 was successfully used to catalyze the hydrolysis of xSB-AB composite. It was found that Co3O4 showed good catalytic performance for the hydrolysis of xSB-AB, and the HY and hydrogen release efficiency (HRE) of 4SB-AB/10 wt%Co3O4 at 40 ℃ reached 2,279.71 mL·g-1 and 89.13%, respectively.
Deposition of WC on TiO2 nanosheets with exposed (001) facets for photocatalytic degradation
Authors:   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China, Dong Y. Q. , Zhang Y. C. ,   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China, Ren B. H. ,   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China, Liu S. N. ,   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China, Li Y. ,   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China, Sun Y. ,   School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China
Published: April 2023

Anatase TiO2 nanosheets with exposed (001) facets were prepared by a hydrothermal method under HF condition. Then, commercial WC particles were deposited on TiO2 nanosheets by physical mixing method. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy and nitrogen adsorption-desorption isotherms. To investigate the effect of WC loading on the photocatalytic performance, the degradation of Rhodamine B (RhB) dye was conducted under simulated light. The results indicated that the WC/TiO2 exhibited higher photocatalytic activity than pure TiO2 catalyst. When the WC loading was 10 wt%, the degradation efficiency reached 90.2% within 60 min. The enhanced photocatalytic performance may be attributed to the introduction of WC particles which could react as an electron trap and promote the separation of photogenerated electron-hole pairs of TiO2. Meanwhile, the trapping experiment confirmed that superoxide radical (·O2 - ) and hole (h+) played leading roles in the degradation of RhB.
Biogenic synthesis of zinc oxide nanoparticles using leaves extract of Camellia sinensis for photocatalytic and biological applications
Authors:   Department of Chemistry, University of Lahore, Sargodha Campus, Sargodha, 40100, Pakistan, Sattar R. , Rasool M. A. ,   Department of Chemistry, University of Lahore, Sargodha Campus, Sargodha, 40100, Pakistan, Qadir R. ,   Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan, Siddique A. B. ,   Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan, Irfan M. I. ,   Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan, Saba I. ,   Department of Chemistry, GC Women University Sialkot-51310, Pakistan, Akhtar M. T. ,   Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan, Rehman M. M. ur ,   Department of Chemistry, University of Lahore, Sargodha Campus, Sargodha, 40100, Pakistan, Mustaqeem M. ,   Institute of Chemistry, University of Sargodha, Sargodha, 40100, Pakistan
Published: April 2023

Nanoparticles have attracted considerable attention of researchers due to their diverse properties in the fields of catalysis, energy devices, wound healing and drug delivery systems . Synthesis of nanoparticles using plants and microbial extract is a green approach due to easy handling, rapidity and cost-effectiveness. This article reported a simple and green method of zinc oxide nanoparticles (ZnO-NPs) synthesis using Camellia sinensis leaves extract as reducing agent. State-of-the-art techniques were utilized for the characterization and measure the potential applications of ZnO-NPs. FTIR and SEM analysis were performed to confirm the nature of bonding and morphology of NPs. XRD analysis confirmed the hexagonal wurtzite structure and crystallite size (34 nm) of ZnONPs. EDX analysis was performed to check the purity of NPs. Energy band gap of valence band and conduction band was found 3.278 eV using UV/Visible spectrophotometry. Purified ZnO-NPs were utilized to determine the photocatalytic potential for degradation of hazardous dye (methylene blue) at λmax of 668 nm under irradiation of sunlight. The results indicated ∼92% photodecomposition of dye after 110 min of sunlight irradiation. Moreover, ZnO-NPs also revealed the antibacterial potential, having better inhibition power against gram-negative bacterial strains.
Investigations of physical properties of lithium-based chalcopyrite semiconductors: non-toxic materials for photovoltaic applications
Authors:   Department of Physics, Banasthali Vidyapith, Rajasthan (India) 304022, Kumari J. , Singh C. ,   Department of Physics, Agra College, Agra (India) 282002, Agrawal R. ,   Department of Computer Engineering and Applications, G. L. A. University, Mathura (India) 281406, Choudhary B. L. ,   Department of Physics, Banasthali Vidyapith, Rajasthan (India) 304022, Verma A. S. ,   Division of Research & Innovation, School of Applied and Life Sciences, Uttaranchal University, Uttarakhand, Dehradun - 248007 (India)
Published: April 2023

The ab-initio calculations have been executed for structural, electronic and optical properties of LiAlTe2, LiGaTe2 and LiInTe2 chalcopyrite structured solids and these calculations are grounded on the principle of density functional theory employed into the full potential augmented plane wave method. The computed lattice constants oscillating from a = 6.257 Å to 6.450 Å and c = 12.044 Å to 12.256 Å for LiXTe2 (X=Al, Ga and In) and also these values consistent with experimentally existed lattice constants. From the study of electronic band-gap, it confirms that these compounds are good semiconductors with direct band-gaps from 2.22 eV, 1.48 eV and 1.61 eV for LiXTe2 (X=Al, Ga and In). The result of optical properties confirms that these chalcopyrite semiconductors can be the fortunate compounds for the photovoltaic applications.
Synthesis and analysis of nanostructured graphene oxide
Authors:   Azerbaijan State Oil and Industry University, Az-1010, Baku, Azadlig ave. 20, Guliyeva N. A. , Abaszade R. G. ,   Azerbaijan State Oil and Industry University, Az-1010, Baku, Azadlig ave. 20, Khanmammadova E. A. ,   Azerbaijan State Oil and Industry University, Az-1010, Baku, Azadlig ave. 20, Azizov E. M. ,   SRI – Geotechnological Problems of Oil, Gas and Chemistry, Az-1010, Baku, Azadlig ave. 20
Published: April 2023

Work has been carried out to improve the method for obtaining and further oxidizing Graphene Oxide (GO) to obtain functionalized layers with a large number of active centres. We have determined that with an increase in the amount of H2O2 in the synthesis, it significantly increases the efficiency of the oxidation process and increases the number of functional groups, while the amount of NaNO3 and KMnO4 remains unchanged. Fourier-Transform Infrared Spectroscopy (FTIR), X-ray analysis, Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM) analyses were carried out. Based on the FTIR result, all putative functional groups for a given material (GO) were determined, such as carbonyl, hydroxyl, ketone and epoxy groups which chemically bonded with graphene. SEM and TEM drawings were analysed, which gave a broad understanding of the morphology of GO nanostructures and, based on these drawings, it is fashionable to say that the material is semi-crystalline with the presence of such byproducts as amorphous carbon nanoparticles. Based on the EDX analysis, it was proved that this nano-structured material does not have third-party products.
Theory, design and characterization of metamaterial absorbers: a formal assessment
Authors:   Department of Physics, G.S.S, GITAM University, Bengaluru, India, Krishna Prasad N. V. , Ramesh Naik B. ,   Department of CSE ,SoT, GITAM University, Bengaluru, India, Anil Babu T. ,   Department of Physics,G.S.S, GITAM University, Hyderabad, India, Rajasekhar S. ,   Department of Mech.Eng. SoT, GITAM University, Bengaluru, India, Madhavi N. ,   Dept. of Statistics, Govt. College(Autonomous), Rajhamundry, India
Published: April 2023

Metamaterial (MTM) absorbers and their design have been of prime interest in view of their capability to absorb electromagnetic waves of high frequencies. Different types of MTM absorbers have been reported in the last two decades. Keeping this in view an attempt was made to review the progress of MTM absorbers in terms of the theory behind them, designing and construction. This paper reviewed the basic theory and design regulations of a perfect MTM absorber at high, narrow and broad band frequencies. Also we reviewed tunable frequency and coherent absorbers. This exercise was done to focus on recent developments in metamaterial absorbers and present the tested results in a more precise way
Preparation and mechanical characterization of (rubber blend - micro lead) rubbery composites for shielding application
Authors:   Department of Physics, College of Education for Pure Sciences, University of Babylon, Iraq, Naeem M. H. , Hadi Al-Nesrawy S. H. ,   Department of Physics, College of Education for Pure Sciences, University of Babylon, Iraq, Al-Maamori M. H. ,   Department of Polymer and Petrochemical Industries, College of Engineering Materials, University of Babylon, Iraq
Published: April 2023

This present work, includes the preparation of rubber batches containing silicone rubber (SIR) (80pphr) and polyurethane (PU) (20pphr) with micro-lead powder in different loading, respectively (0,20.40,60,80,100,150,200,250,300pphr). The mechanical properties measured the device universal tensometer, such as tensile strength, elongation and modulus of elasticity, according standard specified of (ASTM D-412) were followed and the hardness property measured by (Hardness Shore A) was put through its steps according to the standard specification (ASTMD-1415). The results were selected, and the sample (10) consisting of (SIR 80/PU20 and micro-lead 300pphr) was chosen because it is more suitable for the required mechanical properties. The results observed that the ratios of micro-lead loading increased, the tensile and elongation decreased, and the hardness and elastic modulus increased. Rubber batches reinforced with micro-lead were exposed to an infrared (FTIR) test device with the addition of hexane, where there were no changes in the infrared spectrum of the rubber composites (SIR80/PU20/Micro-Pb). Sample No. (10) was shown that the scanning electron microscope (SEM) before and after adding hexane, where it was noted that the image (A) without hexane, the absence of homogeneity of lead. As for image (B) in the presence of hexane, we note the homogeneity of lead and the distribution of lead equally, so that radiation examination were measured the Geiger counter of two sources of radioactive elements were used, the caesium source Cs137 and the cobalt source Co60. The radiation is attenuated through the material, while the thickness of the half (X1/2) gradually contrasts according to the attenuation of the radiation. This work is applied in the applications of shields as a protective suit against harmful radiation.
Structural, optical and electrical properties of sulphide based heterojunction thin film
Authors:   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Obot E. P. , Augustine C. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Chikwenze R. A. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Amadi S. O. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Okpani P. E. ,   Department of Electrical/Electronic Engineering, Alex Ekwueme Federal University Ndufu-Alike, Ikwo, Ebonyi State, Nigeria, Kalu P. N. ,   Department of Physics, Alex Ekwueme Federal University Ndufu-Alike, Ebonyi State, Nigeria, Robert B. J. ,   Department of Electrical/Electronic Engineering Technology, Akanu Ibiam Federal Polytechnic, Unwana, Ebonyi State, Nigeria, Nwoke O.N. ,   Department of Mechanical Engineering, Akanu Ibiam Federal Polytechnic, Unwana, Ebonyi State, Nigeria, Igweoke A.E. ,   Department of Mechanical Engineering, Alex Ekwueme Federal University Ndufu-Alike, Ikwo, Ebonyi State, Nigeria, Okoro R. O. ,   Department of Physics, Ikwo College of Education , Ebonyi State, Nigeria
Published: April 2023

This contribution presents structural, optical and electrical properties of PbS/CdS thin films at different annealing temperatures. The XRD analysis reveal the existence of three different crystalline phases, i.e., the beta-CdS, hawleyite-CdS and greenockite-alpha-CdS phases within the CdS-shell of PbS/CdS core shell thin film. The dislocation density and microstrain decreased with annealing temperatures indicating a decrease in lattice imperfections and formation of high quality film and it can be attributed to the increase in grain size of the film with increase in annealing temperatures. Optical studies placed the band gaps at 1.25eV-1.75eV. About the same magnitude were found from electrical conductivity test. The samples exhibited high conductivity with increasing annealing temperatures which resulted to the bumping of electrons from the valence band to the conduction band. The high absorbance suggest that the film could be coated on collectors to enhance solar energy collection. The achieved band gaps placed the PbS/CdS fabricated with the presented method as a good material for solar photovoltaic applications.
Novel controlling pathway for metallic nanoparticles by laser assisted ion-reduction process
Authors:   Department of Applied Science, University of Technology, Baghdad, Iraq, Shlaga R. A. , Alwan A. M. ,   Department of Applied Science, University of Technology, Baghdad, Iraq, Mohammed M. S. ,   Department of Applied Science, University of Technology, Baghdad, Iraq
Published: April 2023

In this work, the morphological and plasmonic features of the AgNPs which formed by ion-reduction process was carried out extensively. The application of the laser beam during the ion- reduction process has significant effect in the reconstruction of the formed AgNPs with small dimensions and non-frequent morphologies, according to the laser illumination intensity. For non-illumination process the deposited form of the AgNPs appear aggregated into cluster of layer AgNPs size due to the chemical reaction at Si interface, the AgNPs sizes varied from 0.85 to1.2 µm; while at lower laser intensity of about 250 mW/cm2 the AgNPs sizes varied from 0.1 to 1.0 µm, while at high intensity upto 400 mW/cm2 the AgNPs sizes varied from 0.05 to 0.4 µm. The hot spot dimension for non-illumination process varied from 1 to 11 nm while at low intensity of 250 mW/cm2 the hot spot dimension varied from 1to 8 nm. At high intensity upto 400 mW/cm2 , the hot spot varied from 0.1 to 14 nm. The XRD for the generated Ag nanoparticles / Si nanocrystallites, for non- illumination the grain size about 6.171 nm and SSD about 92.687 m2 /g while at low intensity of 250 mW/cm2 the grain size about 4.759nm and SSD about 120.191 m2 /g. At high intensity of 350 mW/cm2 , the grain size about 2.037nm and SSD about 280.847m2 /g uniform distributed AgNPs with minimum hot spot regions can be realized with 350mW/cm2 laser illumination intensity. This process is considerable as a novel work which can be adopted modification at the plasmonic features of metallic nanoparticles for SERs application.
Influence of bath temperature and deposition time on hardness and magnetisation of electrodeposited Nickel Manganese Tungsten thin films
Authors:   Department of Physics, Velalar College of Engineering and Technology, Erode12, Tamilnadu, India, Kirthika P. , Thangaraj N. ,   Department of Physics, Velalar College of Engineering and Technology, Erode12, Tamilnadu, India, Anitha P. ,   Department of Physics, Vellalar College for Women, Erode-12, Tamilnadu, India
Published: April 2023

The Nickel Manganese Tungsten (Ni-Mn-W) thin films were prepared at different temperature and time of deposition on copper substrate. The crystal structure and morphology of deposits were analysed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The XRD revealed that the structure of Ni-Mn-W thin films with have an average grain size of about 28 nm for 45o C. The elemental analysis of Ni-Mn-W thin films were obtained by energy dispersive X-ray spectroscopy (EDAX). The magnetic properties of electrodeposited Ni-Mn-W thin films were obtained by vibrating sample magnetometer (VSM). The magnetic parameters of Ni-Mn-W films such as coercivity and saturation magnetization were decreased with increasing of grain size. The hardness of the films was studies by Vicker Hardness tester through diamond intender method.
Glutamate dehydrogenase1 supports HIF‐1α stability to promote colorectal tumorigenesis under hypoxia
Authors: Hu Kunhua , Ding Yufeng , Zhu Hongwen , Jing Xiaoqian , He Weiling , Yu Hua , Wang Xiongjun
Published: April 2023

Tumor cells surviving hypoxic stress acquire the ability to drive cancer progression. To explore the contribution of dehydrogenases to the low oxygen concentration response, we used siRNAs targeting 163 dehydrogenase‐coding genes and discovered that glutamate dehydrogenase 1 (GDH1) plays a critical role in regulating colorectal cancer (CRC) cell survival under hypoxia. We observed that GDH1 deficiency had an inhibitory effect on CRC occurrence and impaired hypoxia‐inducible factor 1‐alpha (HIF‐1α) stability even under hypoxia. Mechanistically, hypoxia triggered p300 recruitment to GDH1, promoting its acetylation at K503 and K527. GDH1 acetylation at K527 induced the formation of a GDH1 complex with EGLN1/HIF‐1α; in contrast, GDH1 acetylation at K503 reinforced its affinity for α‐ketoglutarate (αKG), and glutamate production. In line with this view, αKG is a product of GDH1 under normoxia, but hypoxia stimulation reversed GDH1 enzyme activity and αKG consumption by the EGLN1/HIF‐1α complex, increasing HIF‐1α stability and promoting CRC progression. Clinically, hypoxia‐modulated GDH1 AcK503/527 can be used as a biomarker of CRC progression and is a potential target for CRC treatment.
Ways of Engaging First-Year Students in Discussions Through Small Group Work
Authors: Bilyk Olha , Malyshivska Iryna , Pyliachyk Nataliia
Published: April 2023

The article deals with the techniques of how to involve university first-year students in speaking using the activities for small groups. The experiment was carried out at Vasyl Stefanyk Precarpathian National University with the freshmen of the Department of Foreign Languages. The focus of the research was on speaking skills as they are considered to play a significant role in enhancing students’ communicative competence. The experiment is of high methodological value as it was based on two types of studying, namely online and in class. The aim of developing speaking skills is threefold. It is a splendid opportunity to practice real-life communication. Any speaking activity can be provided feedback, which will make learners understand the level, progress, and language difficulties they face. The teacher’s productive feedback can evoke students’ great satisfaction from a speaking activity and positively influence their wish to take part in the discussion. It is crucial to find the most suitable ways to help learners speak English fluently and adjust methods and techniques how to engage them in speaking activities. To carry out the experiment qualitative and quantitative methods were used successfully. The observation was selected to do the qualitative research, namely for observing the learners’ participation during their work in small groups, which were selected as a means of conducting speaking activities in the class. The quantitative method in this research was represented by two questionnaires. The purpose of them was to find out students’ attitudes toward this kind of work before and after the experiment. The overall results proved to be positive and the experiment confirmed the hypothesis that engaging students in small group work could contribute to their greater participation in discussion activities. The data of the observation and questionnaires revealed that the learners felt more confident in small teams and they understood some responsibility for their work.
Development of the World View and Values olf Technical University Students in the Context of Spiritual and Moral Education
Authors: Palahniuk Mykhailo , Fomin Kateryna
Published: April 2023

The article highlights the importance of the social and humanitarian disciplines, related to the spiritual and moral aspects of a young person’s life to face the challenge of preserving the individual’s integrity and spiritual growth in modern conditions of stressful, emotional, and psychological overload. It is impossible to implement it in practice without introducing new and improving existing paradigms of spiritual and moral upbringing in educational institutions, which is carried out precisely in the process of teaching social and humanitarian disciplines. The problem of spiritual and moral education of the individual has always been one of the relevant ones, and in the current conditions of the coronavirus pandemic, russia’s military aggression and Ukraine’s struggle for peace, and the European values of democracy, it acquires special importance. After all, in the process of radical socio-political, economic, and cultural reforms of society, the challenge of increasing the role of future specialists training concerning the demands of modern social development and humanization of the educational process generally requires scientists and teachers’ significant attention. The article outlines the main ideals and educational guidelines of Ukrainian society, as they embody the real revival and further development of the Ukrainian nation. The authors emphasize the fact that instability and inconsistency of the moral atmosphere in Ukrainian society resulted in the spiritual and moral education of the young generation becoming particularly acute. This process encourages the revival of tradition and the search for innovative means of spiritual and moral education for Ukrainian youth. The key conditions regarding the importance of spiritual and moral education of future specialists are given.
The Influence of Natural Cycles on Climate Change
Authors:   Faculty of Natural Sciences and Mathematics, University of Montenegro, Montenegro, Jovanovic Gordana
Published: April 2023

The influence of natural cycles on the climate of our planet was very successfully and in detail examined by Milutin Milankovitch. He described mathematically precisely how the movement of the Earth around the Sun over long periods of time is reflected in its climate at different latitudes. Modern researches show the existence of some other natural cycles — astronomical, related to the activity of the Sun and its cycles, and terrestrial, related to periodic processes on Earth such as El Niño and La Niña, which also affect the climate. This paper will discuss all these impacts as well as scientific predictions of the further course of climate change in this century. Key words: climate change, cycles, Earth, Sun, solar activity
Effect of Power Quality on Production Reliability and Stability of Water Treatment Plant at Vodovod-Osijek
Authors:   Poljski put 1, Osijek, Croatia, Junušić Davor
Published: April 2023

Power quality issues are pervasive in most industries. The system operator and the network user are responsible for the power quality at the point of common coupling (PCC). Since a water treatment plant must operate continuously, a reliable and continuous power supply of satisfactory quality is necessary in accordance with HRN EN 50160:2012. Additionally, the electromagnetic feedback of load consumption on the power grid must be within the permitted values prescribed by the Distribution System Grid Code (Official Gazzete nos. 74/18, 52/20). The low-voltage power grid of the “Nebo Pustara” water treatment plant contains sensitive electric and electronic loads. As such, the loads require a power supply of satisfactory quality. Moreover, these loads have non-linear voltage/current characteristics and as such negatively affect power quality. In order to prevent the effects of poor power quality on the water treatment plan operation and to reduce the impermissible effect of non-linear loads on the power grid, the “Nebo Pustara” power sub-station was outfitted with a PQube3 power quality analyzer. This paper presents the results of the power quality analysis. Additionally, the paper details the actions taken in the user and distribution power grid to increase effect production reliability and stability of the water treatment plant and water supply, with the aim of reducing the negative effect on plant operation and equipment and also reducing the impermissible feedback of non-linear loads. Key words: power quality, water for human consumption, production reliability and stability of water treatment plant and water supply, Nebo Pustara, PQube3
Crisis Leadership: Voices from the Field
Authors:   University of Dayton, Brion Corinne
Published: April 2023

This qualitative study used a phenomenological approach and the Marianist characteristics as a conceptual framework to understand the experiences of six lay Marianist educational leaders during COVID-19. Findings indicated that during the pandemic leaders were faced with challenges pertaining to receiving an excess of information, inequity in technology, serving students with various learning needs, and the socioemotional health of students and teachers. Despite these difficulties, these leaders were able to uphold the Marianist characteristics of educating for adaptation and change, educating in family spirit, and for formation in faith. This study is significant because it provides the unique perspectives of how leaders of a Marianist urban high school were able to advance their mission during the global health pandemic. This study also adds to the crisis and Marianist leadership bodies of literature.
The Beam in Our Own Eyes: Antiracism and YA Literature Through a Catholic Lens
Authors:   John Carroll University, Sutton Katie , Grafmeyer Abigail D. ,   John Carroll University, Reynolds Daniel ,   John Carroll University
Published: April 2023

As Catholic schools serve an increasingly racially diverse population of students, they must grapple with the critical requirement to address these students’ unique needs while heeding the call from modern Catholic Church leaders to engage in explicit antiracist action. Using the Historically Responsive Literacy Framework (HRL), this article equips Catholic high school English language arts (ELA) teachers with practical and powerful ways to create antiracist curriculum. To do this effectively, we place antiracist Young Adult (YA) literature (both fiction and nonfiction) in conversation with Catholic canonical texts and modern voices from Catholic clergy members. By connecting with students’ complex identities and creating authentic antiracist learning experiences, Catholic high school ELA teachers can better prepare their students to use both their knowledge and criticality of Catholic social teachings and their individual identities to combat racism.
Modeling of multi-factory dependences in complex control systems by SUGENO fuzzy knowledge base
Authors:   Kharkiv National University of Radio Electronics, Ukraine, N Lazarieva
Published: April 2023

The creation of intelligent control systems based on soft computing for complex real-time systems is considered. Usually, the control of many objects and technological processes is performed by a human operator based on instructions and personal experience. Due to the uncertainty and incompleteness of information about the parameters of the object, the impossibility of their direct measurement and the natural diversity of the environment, the use of classical mathematical methods for the automation of control is impossible. Adaptive methods are used to solve the management problem under conditions of uncertainty. The most effective is the implementation of fuzzy control based on production rules, which does not require knowledge of the object model. The concept of fuzzy control is widely used because of its ability to operate according to conditions. The object is evaluated using fuzzy rules from the knowledge base that create a fuzzy decision domain. The stage of structural identification of the system when modeling an unknown dependency by Sugeno's fuzzy knowledge base is presented, which allows implementing a control algorithm based on a neural network. To take into account the maximum number of influencing factors, the hierarchical structure of the fuzzy control system is applied. Granulation by certain properties of the object and the environment at the level of input variables allows to reduce the dimensionality of the data vector and the number of rules of the knowledge base, making it possible to build fuzzy control systems with an unlimited number of inputs. According to this model, the decision-making process is divided into two levels. The first level reduces the amount of information to define the situations to be processed in the second level by the Sugeno knowledge base. A preliminary fuzzy model of control of complex dynamic objects with incomplete determination is built.
Use of clinical phenotypes to characterize emergency department patients administered intravenous opioids for acute pain
Authors: Caplan Mordechai , Friedman Benjamin W. , Siebert Jason , Takematsu Mai , Adewunmi Victoria , Gupta Chiraag , White Deborah J. , Irizarry Eddie
Published: April 2023

Objective Individual experience with opioids is highly variable. Some patients with acute pain do not experience pain relief with opioids, and many report no euphoria or dysphoric reactions. In this study, we describe the clinical phenotypes of patients who receive intravenous opioids.Methods This was an emergency department-based study in which we enrolled patients who received an intravenous opioid. We collected 0 to 10 pain scores prior to opioid administration and 15 minutes after. We also used 0 to 10 instruments to determine how high and how much euphoria the patient felt after receipt of the opioid. Using a cutoff point of ≥50% improvement in pain and the median score on the high and euphoria scales, we assigned each participant to one of the following clinical phenotypes: pain relief with feeling high or euphoria, pain relief without feeling high or euphoria, inadequate relief with feeling high or euphoria, and inadequate relief without feeling high or euphoria.Results A total of 713 patients were enrolled, 409 (57%) of whom reported not feeling high, and 465 (65%) reported no feeling of euphoria. Median percent improvement in pain was 37.5% (interquartile range, 12.5%–60.0%). One hundred seventy-eight participants (25%) were classified as experiencing pain relief with euphoria or feeling high, 190 (27%) experienced inadequate relief with euphoria or feeling high, 101 (14%) experienced pain relief without euphoria or feeling high, and 244 (34%) reported inadequate relief without euphoria or feeling high.Conclusion Among patients who receive intravenous opioids in the emergency department, the experiences of pain relief and euphoria are highly variable. For many, pain relief is independent of feeling high.
La respuesta del sistema de salud colombiano en tiempos de pandemia: Una evaluación rápida desde los indicadores epidemiológicos
Authors: De la Hoz Restrepo Fernando
Published: April 2023

Este artículo describe algunas de las acciones que tomó el sistema de salud de Colombia con el fin de mejorar la capacidad de respuesta a la pandemia de COVID-19 (SARS-CoV-2) y corregir algunas de las fallas estructurales que amenazaban la efectividad de respuesta. También se presenta la evolución de algunos marcadores epidemiológicos del impacto de la pandemia, entre marzo de 2020 y septiembre de 2021, los cuales pueden ayudar a entender si las medidas tomadas pudieron mitigar o no el impacto de la pandemia.
Entre las acciones que más podrían influir sobre los desenlaces epidemiológicos (casos y muertes) de la pandemia, podemos destacar el aumento del número de camas de la Unidad de Cuidados Intensivos (de 5 000 a 11 000, aproximadamente) y las gestiones realizadas para adquirir vacunas en un mercado internacional fuertemente competido y que prefería proveer vacunas a los países industrializados primero que a los menos desarrollados.
Pese a esos esfuerzos, las draconianas medidas de aislamiento y la suspensión de muchas actividades económicas, durante el periodo de estudio, Colombia fue uno de los 15 países con mayor mortalidad en el mundo y más de 60% de la población se infectó después de la primera onda pandémica. Lo anterior sugiere una baja efectividad de los esfuerzos realizados para fortalecer el sistema de salud.
Reformulación moderna de motivos fantásticos tradicionales en «Claudina», de María Elena Llana
Authors: Martínez Miguel Candelario
Published: April 2023

En su libro Casas del Vedado (1983), la autora cubana María Elena Llana explora temas y estrategias compositivas de las tradiciones literarias no realistas que han mantenido vigencia en Hispanoamérica hasta nuestros días. En este trabajo se analiza uno de sus cuentos, «Claudina», con el objetivo de obtener una comprensión de su poética específica en el marco general de la ficción sobrenatural de nuestro continente, así como del sentido simbólico de lo sobrenatural textual empleado por la autora en este relato.
Análisis de los riesgos contractuales de los procesos de contratación de obras civiles en los municipios de 4a y 6a categoría del Área Metropolitana de Cúcuta en el periodo comprendido entre el año 2016 y el primer semestre del 2021.
Authors: Ramirez-Perez Miguel Gotardo , Fiallo-Soto Oscar Augusto , Dominguez-Palencia Dadny Rocío
Published: April 2023

Esta investigación tuvo como objetivo el Análisis de las matrices de riesgo de los procesos contractuales los municipios de 4a y 6ª categoría del Área Metropolitana de Cúcuta. Para este estudio se tomaron como muestra las matrices de riesgo que cumplen con los lineamientos de Colombia Compra Eficiente y que sean de contratos de obra civil publicados en el Secop I durante el periodo comprendido entre el año 2016 y el primer semestre del 2021. En el desarrollo de la investigación se clasificaron los riesgos según su correcta e incorrectamente identificación, encontrando una preocupante situación, pues se deja en evidencia el desconocimiento de los funcionarios y contratistas (empleados y servidores públicos) para la estructuracion de estrategias  de proteccion de los recursos publicos. La identificación del incorrecto diligenciamiento de la matriz de riesgos previsibles en los documentos precontractuales analizados, pretende ser la base para que las entidades estatales pongan en practica estrategias para diseñar e implementar herramientas de memoria organizacional, con el proposito de fotalecer la gestion interna del conocimiento y proteger tanto a los funcionario y ordenadores de gasto como el erario publico de las consecuencias de la materializacion de riesgos previsibles.
Análisis de los factores que influencian la percepción de turistas en la ciudad de Cúcuta (Colombia) como destino turístico
Authors: Sánchez-Mojica Karla Yohana , Herrera-Rubio Jorge Enrique , Barrientos-Monsalve Ender José
Published: April 2023

El objetivo de esta investigación es analizar el efecto que tienen los factores de Género, Edad y Estado Civil con respecto a la percepción de la ciudad de Cúcuta como sitio turístico. A través de una encuesta se recolectan la información teniendo en cuenta las combinaciones de los niveles de cada factor (Género, Edad, Estado Civil) y se registran para realizar un análisis de varianza y un modelo de regresión lineal. Se puede evidenciar que todos los factores principales tienen un efecto significativo sobre la variable respuesta (percepción del destino); que la relación que generó mayor percepción del sitio turístico es un perfil del turista cuando el género es masculino, edad adulta y estado civil soltero. Las estrategias de marketing son las herramientas que se deben aplicar para analizar  los resultados  de las variables sociodemográficas analizadas con el fin de mejorar la imagen de los  sitios turísticos.
Investigación y desafíos educativos en el contexto mundial en torno a la educación emocional bajo la perspectiva de la psicología positiva. Una revisión sistemática
Authors: Molina Montes Arelis , Pérez Villamizar Dalia Ima , Domínguez Angarita Dexy Dohana , Yohaid Trujillo Yesmin Latife
Published: April 2023

El objetivo del presente artículo de revisión, fue establecer el estado del arte, las tendencias investigativas y los desafíos educativos en el contexto mundial en torno al estudio de la educación emocional bajo la perspectiva de la psicología positiva. Fue un análisis cualitativo, bajo el modelo de revisión sistemática de la literatura, utilizando 20 documentos científicos digitales en el período 2017-2023. Para el análisis se utilizaron tres dimensiones: (1) la educación emocional bajo la perspectiva de la psicología positiva. Un estado del arte contextual; (2) tendencias en la investigación de la educación emocional bajo la perspectiva de la psicología positiva; (3) retos en la educación emocional bajo la perspectiva de la psicología positiva en los procesos educativos contemporáneos. Los resultados indican que, la psicología no es novedosa en la educación, pero si ha ampliado su espectro investigativo y su impacto. El énfasis en la investigación educativa, la creación y fortalecimiento de líneas, y la comprobación de programas ya generados por otros autores, que permitan retroalimentar en la investigación, el impacto que ha tenido la educación emocional bajo la perspectiva de la psicología positiva.
Estrategias para la mejora de la productividad, la calidad y competitividad en las empresas del sector confección en el Estado Táchira, Venezuela.
Authors: Sierra-Parada Maritza , Madriz-Rodríguez Delia Alejandra , Castillo-Matheus María Elizabeth , Coronel-Villalobos Pedro Antonio , Chacín-Betancourt Jenny Carolina
Published: April 2023

El objetivo del artículo es plantear estrategias para la mejora de la productividad, la calidad y competitividad en las empresas del sector confección en el Estado Táchira, Venezuela. Fue un estudio cuantitativo de nivel descriptivo, con diseño de campo, y una población de 98 empresas del sector confección textil ubicadas en los municipios San Cristóbal, Bolívar y Pedro María Ureña del estado Táchira. Se utilizó como técnica de recolección la encuesta, y como instrumento validado por juicio de expertos, siendo las variables: el estado de los aspectos de la cadena de producción, y la determinación de la dinámica de la gestión de la productividad, la calidad y la competitividad en dichas empresas. Entre los principales resultados se tiene algunas inconsistencias sobre la concepción de la productividad, dificultades en el acceso a insumos y materia prima, nivel de producción bajo, maquinaria solo con mantenimiento correctivo. En cuanto a la gestión de calidad, se cuenta con políticas, metas y objetivos de calidad, pero no poseen un sistema de calidad ni especificaciones técnicas de los productos. En cuanto a la competitividad los proveedores tienen alto poder de negociación; las empresas presentan ventajas sobre los clientes en cuanto al establecimiento de precios y la calidad y cantidad de productos; la entrada de nuevos competidores es baja por las dificultades externas y el alto nivel de inversión. Se diseñaron propuestas en función de subsanar los aspectos que presentaron mayores debilidades para las empresas del sector de la confección.
Magnetohydrodynamic Flow of Third Grade Fluid In a Cylindrical Pipe with Isothermal Wall and Joule Heating
Authors: Obi B.I.
Published: April 2023

This present paper is devoted to investigate the magneto hydrodynamic Flow of Third Grade Fluid in a cylindrical pipe with isothermal wall and Joule heating. The flow field of a third grade non-Newtonian fluid in a cylinder has been considered in the presence of magnetic field. The
analysis is based on regular perturbation technique and results show that increase in the Brinkmann and Eckert numbers enhance the temperature of the cylinder, while the third grade and magnetic field parameters lower the temperature of the system. The third grade parameter hastens the increase
in the flow rate.
Analytics of Indian English News Articles Through Deep Learning
Authors: Kumar Anjani , Kumar Pintu , Yash Sai , Sharma Rohit
Published: April 2023

This paper uses natural language processing to study the bias prevalent in the content published by various media sources. Deep learning models for natural language processing have proved effective at incorporating the complicated nuances of language and therefore predicting the correct
sentiment. Iyer et al. (2014) have used recursive neural networks (RNNs) for the sentential level of political ideology detection. Inspired by their work, this paper deals with recursive neural network models to develop two classifiers: technology determinism vs. skepticism and pro-versus-
anti-policy attitudes. In this paper, deep-learning-powered stance detection classifiers have been built for which in-house datasets have been created and annotated
Technological level in the relationship between absorptive capacity and response capacity in manufacturing companies
Authors: Demuner Flores María del Rosario
Published: April 2023

Abstract Purpose: This research analyzed the influence of the acquisition, assimilation, and exploitation of knowledge on the organizational response capacity, given the moderation of the technological level in Mexican manufacturing companies. Originality/value: A conceptual contribution of response capacity as an understanding of organizational agility is fundamentally necessary for organizations facing changing conditions to use new knowledge to achieve the objectives of the organization, employees, and shareholders. An empirical contribution from the absorptive capacity to make companies respond with innovations to environmental changes and help them develop their absorptive capacity so the opportunities and restrictions in their technological level within a company can be seen. Design/methodology/approach: The quantitative study was conducted through a survey with a sample of 102 manufacturing companies that promoted some innovation activity in the State of Mexico, Mexico. The data were analyzed using a hierarchical regression model. Findings: The results showed that the technological level only moderated the relationship between the assimilation of knowledge and organizational response capacity. Also, this study contributed empirically by showing that companies have the same opportunity to improve their absorptive capacity and respond to changes in the environment regardless of their technological level.