bluuebunny/crossref_metadata_2025 huggingface dataset:
Proline–Proline Dyad in the Fusion Peptide of the Murine β–Coronavirus Spike Protein’s S2 Domain Modulates Its Neuroglial Tropism
Authors: Safiriyu Abass Alao , Mulchandani Vaishali , Anakkacheri Mohammed Nahaf , Pal Debnath , Das Sarma Jayasri
Published: January 2023

The β-Coronavirus mouse hepatitis virus (MHV-A59)-RSA59 has a patent stretch of fusion peptide (FP) containing two consecutive central prolines (PP) in the S2 domain of the Spike protein. Our previous studies compared the PP-containing fusogenic-demyelinating strain RSA59(PP) to its one proline-deleted mutant strain RSA59(P) and one proline-containing non-fusogenic non-demyelinating parental strain RSMHV2(P) to its one proline inserted mutant strain RSMHV2(PP). These studies highlighted the crucial role of PP in fusogenicity, hepato-neuropathogenesis, and demyelination. Computational studies combined with biophysical data indicate that PP at the center of the FP provides local rigidity while imparting global fluctuation to the Spike protein that enhances the fusogenic properties of RSA59(PP) and RSMHV2(PP). To elaborate on the understanding of the role of PP in the FP of MHV, the differential neuroglial tropism of the PP and P mutant strains was investigated. Comparative studies demonstrated that PP significantly enhances the viral tropism for neurons, microglia, and oligodendrocytes. PP, however, is not essential for viral tropism for either astroglial or oligodendroglial precursors or the infection of meningeal fibroblasts in the blood–brain and blood–CSF barriers. PP in the fusion domain is critical for promoting gliopathy, making it a potential region for designing antivirals for neuro-COVID therapy.
A Genome of Temperate Enterococcus Bacteriophage Placed in a Space of Pooled Viral Dark Matter Sequences
Authors: Pchelin Ivan M. , Tkachev Pavel V. , Azarov Daniil V. , Gorshkov Andrey N. , Drachko Daria O. , Zlatogursky Vasily V. , Dmitriev Alexander V. , Goncharov Artemiy E.
Published: January 2023

In the human gut, temperate bacteriophages interact with bacteria through predation and horizontal gene transfer. Relying on taxonomic data, metagenomic studies have associated shifts in phage abundance with a number of human diseases. The temperate bacteriophage VEsP-1 with siphovirus morphology was isolated from a sample of river water using Enterococcus faecalis as a host. Starting from the whole genome sequence of VEsP-1, we retrieved related phage genomes in blastp searches of the tail protein and large terminase sequences, and blastn searches of the whole genome sequences, with matches compiled from several different databases, and visualized a part of viral dark matter sequence space. The genome network and phylogenomic analyses resulted in the proposal of a novel genus “Vespunovirus”, consisting of temperate, mainly metagenomic phages infecting Enterococcus spp.
A Repeat Pattern of Founder Events for SARS-CoV-2 Variants in Alaska
Authors: Haan Tracie J. , Smith Lisa K. , DeRonde Stephanie , House Elva , Zidek Jacob , Puhak Diana , Mullen Logan , Redlinger Matthew , Parker Jayme , Barnes Brian M. , Burkhead Jason L. , Knall Cindy , Bortz Eric , Chen Jack , Drown Devin M.
Published: January 2023

Alaska is a unique US state because of its large size, geographically disparate population density, and physical distance from the contiguous United States. Here, we describe a pattern of SARS-CoV-2 variant emergence across Alaska reflective of these differences. Using genomic data, we found that in Alaska, the Omicron sublineage BA.2.3 overtook BA.1.1 by the week of 27 February 2022, reaching 48.5% of sequenced cases. On the contrary, in the contiguous United States, BA.1.1 dominated cases for longer, eventually being displaced by BA.2 sublineages other than BA.2.3. BA.2.3 only reached a prevalence of 10.9% in the contiguous United States. Using phylogenetics, we found evidence of potential origins of the two major clades of BA.2.3 in Alaska and with logistic regression estimated how it emerged and spread throughout the state. The combined evidence is suggestive of founder events in Alaska and is reflective of how Alaska’s unique dynamics influence the emergence of SARS-CoV-2 variants.
Sorption of 2,4-Dichlorophenoxyacetic Acid from Agricultural Leachate Using Termite Mound Soil: Optimization Using Response Surface Methodology
Authors: Debebe Yalemtsehay , Alemayehu Esayas , Worku Zemene , Bae Wookeun , Lennartz Bernd
Published: January 2023

The extensive use of 2,4-dichlorophenoxyacetic acid (2,4-D) pesticide leads to the contamination of surfaces and groundwater. In this respect, it is critical to develop an inexpensive and environmentally friendly adsorbent for 2,4-D-laden agricultural leachate. In the current study, termite mound soil (TMS) from Ethiopia was used as an adsorbent in a batch mode aimed at the removal of 2,4-D from an aqueous solution. The TMS was characterized using Brunauer–Emmett–Teller (BET), Fourier-transform infrared (FTIR), scanning electron microscopy (SEM), atomic absorption spectrometry (AAS), and X-ray diffraction (XRD) techniques. The effects of various operating parameters such as pH, contact time, adsorbent dose, and initial concentration were investigated. In addition, the optimization process and interaction effect were studied using response surface methodology (RSM). A high 2,4-D removal percentage (89.6%) was achieved for a 2,4-D initial concentration of 50.25 mg/L at pH 2, an adsorbent dose of 15.25 g/L, and a contact time of 180.5 min. The 2,4-D adsorption isotherms could be adequately described by the Langmuir model (R2 = 0.9687), while the kinetics of the 2,4-D adsorption on the TMS best fit the pseudo-second-order model. Overall the study showed that TMS is an effective adsorbent for the removal of 2,4-D from agricultural leachate.
Parameter δ18O in the Marine Environment Ecosystem Studies on the Example of the Barents Sea
Authors: Namyatov A. A. , Makarevich P. R. , Druzhkova E. I. , Pastukhov I. A.
Published: January 2023

The isotopic parameter δ18O in oceanography is used for the calculation of mixing proportions of the Atlantic, rivers, and melted waters as well as the relative content of ice-forming waters. Using these values, as well as nutrient concentrations in the nuclei of these waters, it is possible to calculate a conservative concentration, which is determined only by the water’s mixing. These values are the points of reference for water nutrients reserve changes at the expense of the «nonconservative» factors (photosynthesize and geochemical sedimentation). This approach in the calculation of primary production allows moving from the use of the constant stoichiometric ratios to the floating ones, which is observed in the actual ecosystem. Based on the proposed method, the nutrient consumption features and production changes in the Barents Sea were studied. According to the maximum value of production in the summer, the following areas were identified—an early autumn period in the Barents Sea, an area with the maximum values of gross primary production (GPP > 150 g C m−2), three regions with increased values (GPP > 100 g C m−2), and two regions with relatively low values (GPP < 100 g C m−2). The use of this technique with a long-term data series available on salinity and the content of nutrients will allow the future to proceed to the study of the climatic variability of these parameters, ranging from the nutrient consumption variability to the productivity variability of the study area.
Presentation of DeMa (Decision Support Software and Database for Wellfield Management) and Its Application for the Wadi Al Arab Wellfield
Authors: Alqadi Mohammad , Al Dwairi Ala , Merchán-Rivera Pablo , Chiogna Gabriele
Published: January 2023

This article aims to present the structure and the workflow of a new software DeMa (Decision Support Software and Database for Wellfield Management), to support wellfield managers in their decision-making processes. There is a recognized need to improve the management of groundwater resources, especially with the increased demand for fresh water in arid and semi-arid regions. DeMa differentiates from other available software, by combining data collected for the well’s maintenance, operation, design, installations, and cost data with the collected hydrological field measurements. Additionally, DeMa links the different information and provides an effective graphical representation of the data. We applied the software to the Wadi Al Arab wellfield case study to support wellfield managers in the decision-making process of three typical problems: identification of missing data and information concerning the wells, identification of maintenance needs for a well, and identification of a suitable location for a new well. In the application to the Wadi Al Arab wellfield (Jordan), we collected data and documents from the Yarmouk Water Company (YWC), the Jordan Ministry of Water and Irrigation (MWI), and private drilling companies. The software application highlights the beneficial effects of the digitalization of water resources management by improving data availability and management and achieving data and research-based decisions on the wellfield.
Reactive Black Removal by using Electrocoagulation Techniques: An Response Surface Methodology Optimization and Genetic Algorithm Modelling Approach
Authors: Manikandan S , Saraswathi R
Published: January 2023

The dye wastewater discharge from the textile industries mainly affects the aquatic environment. Hence, the treatment of this wastewater is essential for a pollutant-free environment. The purpose of this research is to optimize the dye removal efficiency for process influencing independent variables such as pH, electrolysis time (ET), and current density (CD) by using Box-Behnken design (BBD) optimization and Genetic Algorithm (GA) modelling. The electrocoagulation treatment technique was used to treat the synthetically prepared Reactive Black dye solution under batch mode potentiometric operations. The percentage of error for the BBD optimization was significantly greater than for the GA modelling results. The optimum factors determined by GA modelling were CD-59.11 mA/cm2, ET-24.17 minutes, and pH-8.4. At this moment, the experimental and predicted dye removal efficiencies were found to be 96.25% and 98.26%, respectively. The most and least predominant factors found by the beta coefficient were ET and pH respectively. The outcome of this research shows GA modeling is a better tool for predicting dye removal efficiencies as well as process influencing factors.
A importância da capacitação dos cuidadores de idosos
Authors: Silveira Diego Alves da , Romeiro Amanda Maria de Sousa , Oliveira Letycia Parreira de , Merigui Gabriel Antonio
Published: January 2023

Introdução: Os cuidados aos idosos tendem a ser integrais, pois as doenças crônicas são as maiores causas de dependência e incapacidade. Os cuidadores de pessoas idosas têm de ser competentes, pois a ajuda é imprescindível para o bom manejo da doença, seja porque a família não consegue administrar os cuidados necessários, ou porque o idoso encontra-se em situação de vulnerabilidade socioeconômica ou espacial. Objetivo Descrever, por meio da literatura cientifica, a importância da formação e capacitação dos cuidadores de idosos. Método: Por se tratar de uma revisão integrativa, esse estudo realizou a busca dos artigos por meio das bases de dados: MedLine/PubMed (Medical Literature Analysis and Retrievel System Online), LILACS (Literatura Latino-Americana e do Caribe em Ciências da Saúde), SciELO (Scientific Electronic Library Online), BVS (Biblioteca Virtual em Saúde) e Portal de Periódicos CAPES, sendo a busca a ser realizada entre março e setembro de 2022. Posteriormente, houve a avaliação dos estudos incluídos, interpretação dos resultados e construção deles. Resultados: Conforme a tabela I, foram encontrados durante a pesquisa 267 artigos não duplicados. Desses, após a leitura de seus títulos e resumos, 61 artigos passaram à próxima fase de leitura na íntegra. Após avaliação de todo o artigo, 16 artigos foram avaliados para compor a amostra final (Tabela 2). Conclusão: A falta de cuidados especiais voltados aos idosos atrasa o processo de cura da doença e onera os envolvidos, incluindo esses cuidadores como colaboradores dos sistemas de saúde.
The aggregation’s partial schemes in the quality theory of dpac’s mathematical designing
Authors:   Starovoytov Center of Information Technologies and Systems for Executive Power Authorities, Simonov V.M.
Published: January 2023

in this article three partial schemes of the composition transformations of aggregation have been described: integration transformations of information system’s models, standardization of scaled multigraphs and aggregation of the finite and MMD-transformers’s superpositions. For every scheme the appropriate subject area has been indicated.
A method of supporting managerial decision-making in crisis situations based on automated management systems
Authors:   Starovoytov Center of Information Technologies and Systems for Executive Power Authorities, Biryukova A.A. , Gusev K. V. , Leontiev A. S. ,   MIREA — Russian Technological University
Published: January 2023

The paper presents theoretical calculations for management decision support algorithms in the context of changing priority indicators that depend on time, which allows you to quickly respond to changes in critical parameters in situations of uncertainty. These algorithms are used in analytical automated control systems, such systems developed at Federal State Autonomous Research Institution «Centre of Information Technologies and Systems for Executive Power Authorities named after A.V. Starovoitov» include systems created on a complex adaptive functional and technical platform of Federal State Autonomous Research Institution «Centre of Information Technologies and Systems for Executive Power Authorities named after A.V. Starovoitov», the central link of which is the Sirius software and information complex, systems included in the complex of automated state information systems to support management decisions in the field of science and technology [1]. In the context of the development of the digital economy, the processing of big data obtained from heterogeneous automated and information systems requires the improvement of decision support algorithms, which directly affects the correction of the course of the information society development, both in local areas of the digital economy and in the creation of new federal targeted programs in the field of information technology.
On the issue of monitoring the functional characteristics and security of critical complex systems
Authors:   Starovoytov Center of Information Technologies and Systems for Executive Power Authorities, Mikhailov J.B.
Published: January 2023

Concepts of crucial complex systems are entered. The basic problem scientifically-methodical questions of maintenance of the control and security their functional characteristics are analysed. The methodical scheme of quantitative estimations of parameters of a condition and efficiency of their maintenance is brought.
Methodological aspects of organizing monitoring of the functional characteristics of communication networks
Authors:   International Center for Informatics and Electronics, Bogdanov Y.M. , Ogarok A.L. , Selivanov S.A.
Published: January 2023

Methodical aspects of organization of monitoring of functional characteristics of communication networks are considered. A classification of communication networks and their functional characteristics, a formalized description of the process of monitoring the functional characteristics of communication networks are presented. The results of research on the implementation of monitoring processes for the functional characteristics of communication networks are presented
Composting of stabilized municipal sewage sludge with residues from agri-food processing in Poland
Authors: Krasowska Małgorzata , Kowczyk-Sadowy Małgorzata , Obidziński Sławomir
Published: January 2023

Stabilized municipal sewage sludge and selected waste from agri-food processing can be used for agricultural purposes, which is part of the circular economy. Therefore, chosen residues were tested for the possibility of using them for fertilisation purposes. They were then subjected to the process of composting in a bioreactor with artificial aeration. The compost mixtures were prepared to take into account their contents of, among others, carbon, nitrogen, phosphorus, and water; in the case of sewage sludge, the contents of biological contaminants and heavy metals were also determined. Based on the conducted studies, it has been found that organic waste from agri-food processing and stabilised municipal sewage sludge can be used in the composting process. At the same time, the obtained compost is characterised by good fertilising properties. Considering the physicochemical properties of the obtained compost, it was found that it can be a precious fertiliser used as a soil additive.
Normative ecological economics as a condition for sustainable development
Authors: Śleszyński Jerzy
Published: January 2023

This paper aims to highlight the absolute competitiveness between positive and normative economics. The article presents this controversy as a pretext to analyse a specific field of operation of ecological economics. The normative approach in the ecological economics is needed in the complex age of increasing deficits and confronting threats to biological and social sustainability. Reliable data from biology, physics, chemistry and medicine inform us what is dangerous. They also suggest directions of changes and their necessary scale. The normative approach, based on the guidelines from the basic natural sciences, allows for the creation of economic theories and models and then derives specific, quantitative premises for actions taken in the economy. The thesis of this article boils down to the statement that the effective involvement of ecological economics in the theoretical and practical solving of sustainable development problems is possible only through the use of the normative approach.
Social attitudes towards electronic waste and the implementation of circular economy principles
Authors: Lorek Elżbieta , Lorek Paweł
Published: January 2023

This article addresses the issue of electro-waste and the role of the consumer of electrical and electronic equipment within the organisation of a circular economy. The aim of the article is (i) to identify the attitudes of the consumers surveyed towards unused electrical and electronic equipment, (ii) to assess the consistency of the attitudes displayed with the principles of the circular economy, and (iii) to identify the most important factors influencing these attitudes. The theoretical part approaches issues such as consumers' subjective perception of electro-waste, the increasing amount of electro-waste globally, and the problems associated with limited recycling opportunities. The conducted study revealed the potential of the surveyed consumers for the organisation of the circular economy in the field of electro-waste management, as well as the risk factors in the form of depositing electro-waste into the municipal waste stream. The analysis also showed a correlation between attitudes towards electro-waste with factors such as age, gender and education. In the concluding part, the most underlying consumer problems related to electro-waste management were systematised; more thorough research was also signalled.
Estilos de vida y estrés en relación con el rendimiento académico en estudiantes de secundaria
Authors: Lipa Luzbeth
Published: January 2023

La investigación tuvo como objetivosdeterminar la relación entre estilos de vida, estrés y el rendimiento académico de los adolescentes. Fue de tipo transversal, prospectivo y analítico. La población estudiada estuvo constituida por 1070 estudiantes, se realizó un muestreo probabilístico obteniendo 286 unidades de análisis. Para los estilos de vida se aplicó el cuestionario de perfil de estilo de vida (PEPS-I) de Nola Pender y el cuestionario de estrés académico de Barraza Macías. Así mismo del rendimiento académico se evaluó según las fichas de registro de notas del año. Para los resultados se trabajó con el SPSS versión 22.0, la ji cuadrada con el nivel de significancia del 5% y coeficiente de contingencia. Los resultados prevalecen que el nivel de estilos de vida fue: El 82% de estudiantes un estilo de vida moderadamente saludable, 13% un nivel de estilo de vida no saludable y el 6% un nivel de estilo de vida saludable. Respecto al nivel de estrés fue: el 52% de estudiantes un nivel de estrés bajo, el 48% un nivel de estrés medio y 0% nivel de estrés alto.Finalmente, el rendimiento académico fue: El 55% de estudiantes un rendimiento académico bueno, 45% un rendimiento académico regular y 0% un rendimiento académico deficiente y muy bueno. Para la prueba de hipótesis se aplicó diseño estadístico de ji cuadrada con el nivel de confianza de 95%, lográndose los siguientes resultados según la prueba estadística entre los estilos de vida y estrés no existe relación en el rendimiento académico, sin embargo el coeficiente de contingencia segúnElorza; existe una correlación positiva muy débil del rendimiento académico y el nivel de estilos de vida; en cuanto al rendimiento académico y el nivel de estrés existe una correlación negativa muy débil.
EFL Students’ Anxiety in Oral Presentation in Thesis Examination during Covid- 19 Pandemic Era: Factors and Strategies
Authors: Nur Sahril , Sakkir Geminastiti , Rosmini
Published: January 2023

This research discusses EFL students’ anxiety in oral presentation in thesis examinations. This research aims to reveal the factors causing students’ anxiety and the strategy that EFL students apply to overcome/reducing their anxiety. The researchers conducted this research in Islamic Higher Education and this research used a qualitative method with a case study approach. The participants of this research were 7 (seven) EFL students that the data were analyzed using thematic analysis based on Braun and Clarke (2016). Then, the researchers used Wilson’s (2004) model semi-structured interview that the researchers arranged as the research instruments. The results revealed that the factors causing students’ anxiety generally: linguistic factors and non-linguistic factors (psychology factors, environment factors, and individual factors).  Furthermore, the researchers found that EFL students apply strategies to overcome anxiety in oral presentation: preparation, relaxation, positive thinking, peer seeking, self-entertaining, and praying. Therefore, the lecturers have to know their students’ anxiety in oral presentation and they have to apply the best strategy in teaching English as Foreign Language.
A Quick Tutorial on Time-Sensitive Networks
Authors: Walrand Jean
Published: January 2023

This is a short tutorial on IEEE Time Sensitive Networking standards that are being explored by industry for applications that include inter-vehicle networks, process automation, and virtual reality.  The key mechanisms of the standards are traffic shaping and scheduling. The paper explains these mechanisms and illustrates them. Moreover, the paper provides guidelines on how to combine these mechanisms in a network. 
Attack Graphs for Standalone Non-Public 5G Networks
Authors: Tripathi Arpit
Published: January 2023

Private Networks (also known as Non-Public Networks) bring significant benefits to Industry 4.0. These networks are typically deployed on-premises of the enterprises, and their isolation from the public (consumer) networks improves the crucial aspects of security and reliability. Despite the isolation, insider attacks can be mounted on these networks. This paper analyses such attacks using attack patterns from Common Attack Pattern Enumerations and Classifications (CAPEC) database. The analysis uses attack graphs, to combine individual domains, in the context of human, device, and network vulnerabilities. The attack graphs help identify paths, the cumulative impact on the system, and possible defense techniques, including security controls to mitigate the impact. Using three sample attack graphs in the context of standalone private 5G networks, this paper analyses possible security mechanisms and captures the difference among legacy enterprise networks (including Wi-Fi for limited mobility), public networks, and private networks.
Design of a Wavelength-Meter with Measurement Range up to 100nm and 8 pm precision
Authors: Volpini Andrea , Massella Damiano , Zyskowski Marcin , Soares Francisco , Diaz-Otero Francisco J.
Published: January 2023

Hereby, we present a new design for an integrated wavelength meter. The device works by coupling an unknown monochromatic light source to four microring resonators of different free spectral range containing a phase modulator. The output of each ring is coupled to a separate photodiode (PD). The setup relies on modulating the spectral position of ring resonances while monitoring transmitted power with PDs. Thanks to data acquired during calibration, is possible to relate such output powers to a unique wavelength. While state-of the art designs allow for either high precision or broad range, our system does not require any tradeoff between those two characteristic, achieving up to 8 pm precision (for a ring Q factor equal to 2*10^5) and 100 nm of wavelength range. We will discuss how losses influence the measurement speed and the resolution of the device. The structure, although platform independent, will be realized in InP.
A Comparative Study of Hybrid Machine Learning Approaches for Fake News Detection that Combine Multi-Stage Ensemble Learning and NLP-based Framework
Authors: Singh Gaurav , Selva Kamal
Published: January 2023

Fake News has been spreading widely throughout the world as the booming internet era has started worldwide. Now, more people have access to the Internet than ever, which has led to a significant rise in spreading fake news. So, to solve this issue, it would be highly impossible to manually remove every phony news article. To tackle the above problem of checking on information related to the source, content, or news publisher to categorize it as genuine or fake, we take the help of Machine Learning to classify the information on the web as True or False. Therefore this paper explores the different types of ML classifiers to detect fake news. Therefore, this study will use textual properties of the news dataset we took from Kaggle to distinguish a piece of news as fake or real. Furthermore, with these properties, we will train our model using different ML classification algorithms to evaluate the performance of the dataset collected.
Lemoine's Conjecture: A Limited Solution Using Computers
Authors: Dawar Naren
Published: January 2023

This paper provides a limited solution for Lemoine’s conjecture that includes more numbers than previously found on record: 10^9. Lemoine’s conjecture, named after mathematician Émile Lemoine, states that all odd integers greater than 5 can be represented as the sum of an odd prime number and an even semiprime1. Using Python & C++, both popular programming languages often used for automating tasks and general programming, this conjecture can be proved for all values that fall under the criteria up to 10^10. The process of checking each number in Python utilizes math, a standard Python library, along with assisting functions, such as a prime number verification function. 
An Analysis of the Satisfaction of NCS-Based Development Curriculum Reflecting the Demand of Employees in the Domestic Textile and Fashion Industry
Authors:   Chungbuk National University, Research Institute of Human Ecology, Koo Da Som , Cho Hang Sung , Yoon Hye Jun
Published: January 2023

Background/Objectives: Using past research and a survey, this study evaluated employee satisfaction to understand the practical application and appropriateness of the National Competency Standards (NCS) curriculum and propose an effective education plan to improve the curriculum content.
Methods: A curriculum satisfaction survey was conducted From February to October 2022 on 338 workers, after which the data were evaluated using frequency analyses and descriptive statistics.
Results: It was found that most education participants were engaged in the textile and clothing industries and others were associated with fiber analysis or textile-related industries. Workers involved in design, trade, sales, customer counseling, process management, quality control, and R&D had participated in the training for which knowledge of clothing materials and manufacturing processes was needed. Satisfaction with the four curricula was generally high, with the newly added subjects showing a high satisfaction rate of 4.5 points or more. Therefore, identifying textile fashion industry company requirements in NCS curricula could be of practical assistance to both companies and employees.
Conclusion/Implications: This study provides information on the education needs of workers and highlights to need to promote technological development links. Linking curricula with industry job systems based on NCS could improve practical job skills, strengthen employee and management expertise, and help better develop the domestic fashion industry.
Upaya Meningkatkan Kedisiplinan Guru dengan Penerapan Reward dan Punishment di MIN 3 Batang Hari
Authors: Suyatno Suyatno
Published: January 2023

Peningkatan mutu pembelajaran di sekolah salah satu faktornya adalah mengenai kedisiplinan. Selain sebagai pendidik guru juga menjadi teladan bagi siswa – siswanya, oleh karena itu peran guru sangat penting dalam pembentukan karakter siswa terutama dalam hal kedisiplinan dan tanggung jawab. Suatu kondisi belajar yang optimal dapat tercapai jika guru menegakkan kedisiplinan, mampu mengatur siswa dan sarana pengajaran serta mengendalikannya dalam suasana yang menyenangkan untuk mencapai tujuan pengajaran. Selain itu, hubungan interpersonal yang baik antara guru dan siswa dengan siswa merupakan syarat keberhasilan pengelolaan kelas. Dengan demikian, kedisiplinan guru dalam pembelajaran mutlak diperlukan guna mewujudkan kondisi belajar yang efektif dan efisien dengan hasil yang optimal. Reward and Punishment dipandang salah satu solusi yang tepat dalam kasus peningkatan kediplinan. Tujuan dari penelitian tindakan ini adalah ingin mencari alternatif pemecahan masalah sebagai upaya meningkatkan disiplin guru dalam kehadiran mengajar dikelas melalui penerapan Reward and Punishment. Metode yang digunakan dalam penelitian ini adalah metode Penelitian Tindakan Sekolah (PTS). PTS bertujuan untuk mencari pemecahan permasalahan nyata yang terjadi di sekolah-sekolah, sekaligus mencari jawaban ilmiah bagaimana masalah-masalah tersebut bisa dipecahkan melalui suatu tindakan perbaikan. Sasaran penelitian ini adalah Guru di MIN 3 Batang Hari Tahun Pelajaran 2021/ 2022. Data yang diperoleh menunjukan bahwa setelah diadakan penerapan tindakan berupa Reward dan Punishment, guru yang terlambat lebih dari 15 menit adalah 0, dan guru yang terlambat kurang dari 10 menit sebanyak 2 orang guru. Penerapan Reward dan Punishment dapat meningkat disiplin guru hadir pada kegiatan belajar mengajar di MIN 3 Batang Hari
Meningkatkan Kemampuan Menulis Teks Narative Melalui Model Pembelajaran Berbasis Proyek (PBL) Menggunakan Media Video Klip Lagu
Authors: Nurahman Irman
Published: January 2023

Model pembelajaran dan media pembelajaran mempunyai peranan penting dalam mencapai keberhasilan tujuan pembelajaran yang ditentukan guru pada proses belajar mengajar khususnya dalam keterampilan menulis. Banyaknya siswa yang masih kesulitan dalam menyusun teks narative serta kurang termotivasi dalam menulis Narative Text menyebabkan kemampuan menulis narrative siswa  kurang memuaskan. Melalui metode dan media yang tepat, penulis berharap dapat memecahkan masalah tersebut dengan mengadakan Penelitian Tindakan Kelas (PTK) berjudul “Meningkatkan Kemampuan Menulis Teks Narative melalui Model Pembelajaran Berbasis Proyek (Project-Based Learning) dengan Menggunakan Media Video Klip Lagu pada Siswa Kelas VIII-D SMP Negeri 1 Cikembar Sukabumi”. Tujuan Penelitian Tindakan Kelas yang peneliti lakukan adalah untuk mengetahui seberapa besar penggunaan model pembelajaran Project-Based Learning dan media video klip lagu dapat meningkatkan kemampuan menulis Narrative siswa sebagai hasil dari perbaikan pembelajaran yang telah dilaksanakan. Hasil penelitian menunjukan bahwa kemampuan menulis Teks Narative siswa pada tahap pra tindakan nilai rata-rata siswa 65,33. Setelah tahap siklus I nilai rata-ratanya 72,28. Pada siklus II nilai rata-rata siswa mencapai 79,33 dengan kategori tuntas semua, dan hasil pencapaian nilai akhir siswa memperoleh  rata-rata nilai sebesar 79,75 dengan KKM 75. Dari hasil tersebut terlihat bahwa ada peningkatan keterampilan  siswa dalam menulis Teks Narative. Penelitian ini dapat disimpulkan bahwa model pembelajaran Project-Based Learning dengan menggunakan media video klip lagu berhasil meningkatkan kemampuan menulis Teks Narative siswa kelas VIII-D SMPN 1 Cikembar Sukabumi
A Case of Clostridioides difficile Infection of a Pregnant Woman Treated with Colectomy
Authors: Tekin Suda , Irkoren Pelin , Sucu Serkan , Kartal Kinyas
Published: January 2023

Clostridioides difficile-associated pseudomembranous colitis (PMC) is a life-threatening inflammatory bowel disease. Here, we aimed to present a 40-year-old woman at 25 weeks of gestation whose pregnancy was terminated earlier than expected. Unfortunately, despite fidaxomicin and oral vancomycin, the patient’s diarrhea did not improve, and she had to undergo a subtotal colectomy. C. difficile infections developing in pregnant women can be catastrophic for both baby and maternal health. Also, antibiotic stewardship is crucial in the prevention of PMC. Therefore, unnecessary and prolonged use of antibiotics should be avoided.

Keywords: Clostridioides difficile, pregnant, colectomy, colitis
Prevalence of Fosfomycin Resistance Among Enterobacterales Isolates in A Tertiary Care Hospital from Turkey
Authors: Gune Doga Beliz , Ertokatli Mustafa , Hacieminoglu-Ulker Kubra , Birinci Asuman
Published: January 2023

Objective: Urinary tract infections are one of the most common causes of morbidity around the world. Fosfomycin is a specific broad-spectrum antibiotic used to treat these infections. However, in recent years, many studies have reported increased fosfomycin resistance in Enterobacterales isolates. Therefore, this study aimed to evaluate the distribution of pathogens isolated from urine samples and find the fosfomycin resistance rates over nine years (2012-2020).

Materials and Methods: A total of 18,884 uropathogenic Enterobacterales isolates were included in the study between 2012 and 2020. The isolates were identified by VITEK® 2 Compact (bioMérieux, Marcy l’Etoile, France), and the antimicrobial susceptibilities of the isolates were also evaluated using the VITEK® MS automated system (bioMérieux, Marcy l’Etoile, France).

Results: Escherichia coli (64.04%) was the most common bacteria among Enterobacterales. Fosfomycin resistance rates were 1.98%, 21.64%, and 10.36% in E. coli, Klebsiella pneumoniae, and all bacteria, respectively. The 34.97% of isolates were extended-spectrum β-lactamase (ESBL)-producing Enterobacterales, and the fosfomycin resistance rate was 13.08% in these isolates. In addition, fosfomycin resistance rates were found as 3.06% and 23.84% in ESBL-producing E. coli and ESBL-producing K. pneumoniae, respectively.

Conclusion: Fosfomycin seems a good option for effectively treating UTIs caused by E. coli. On the other hand, we found that fosfomycin resistance tends to increase over the years. Therefore, we recommend further studies to evaluate fosfomycin resistance.

Keywords: fosfomycin resistance, extended-spectrum beta-lactamases producing, Enterobacterales
Hepatit B Virus DNA Flare During In Vitro Fertilization
Authors: Toygar-Deniz Muge , Akhan Sila
Published: January 2023

Potent antivirals are used for the treatment of hepatitis B infection. A 38-year-old female patient whose hepatit B virus (HBV) viral load was suppressed under tenofovir disoproxil fumarate treatment but had a viral flare during in vitro fertilization (IVF) treatment is presented. Although HBV DNA was negative continuously in the controls, an increase in HBV DNA was observed during IVF treatment. Hepatitis B has been isolated from many extrahepatic tissues. Ovarian stimulation is likely to increase viral replication. Therefore, it is essential to check HBV DNA periodically to prevent vertical transmission.
Monkeypox Virus Infection: First Two Cases in Turkey
Authors: Dumlu Ridvan , Kanturk Arzu , Demir Erdinc , Dinc Leyla Cemre , Simsek Funda
Published: January 2023

Monkeypox virus infection, which is endemic in Central and West Africa, is a zoonotic disease with smallpox-like rashes. In May 2022, the World Health Organization announced an epidemic due to an unusual number of case reports starting from Europe and spreading to other regions, and on July 23, 2022, this epidemic was declared a public health problem of international importance. In this case report, we aimed to give information about clinical and laboratory characteristics: follow-up and isolation processes of the first two cases confirmed by a polymerase chain reaction in Turkey.
Disk intake device of drip cooler-emitter with labyrinth centrifugal blocking of reflected flows
Authors:   Bakhvalov Y.O. Vinogradov N.E. Benderovich V.A. Lunatsi E.D. Iosifov P.A. Kulikov S.N.
Published: January 2023

The design of the main element of thermal supply of power systems of spacecrafts with the use of drip monodisperse flows is considered. The results of experimental testing of a mock-up drip cooler-emitter are presented.
Keywords: drip cooler-emitter, thermal supply, energy system, cooling, spacecraft.
1525395@mail.ru
Study of stamping of unequal channels. Part 6. Fibrous structure during channel extrusion. 2. Calculation formulas and their application
Authors: Vorontsov A.L.
Published: January 2023

Calculation formulas are obtained for determining the geometric parameters of the deformation change in the elements of the structure of the extruded material.
Keywords: die forging, extrusion, misalignment of punch and die, plain strain, fibrous structuremt.
13@bmstu.ru
PENGARUH PENAHANAN SUHU REAKTOR PADA PENGUJIAN LDPE DENGAN DEBIT AIR 46 L/MIN
Authors: Sukarman  , Fathan Mubina Dewadi  , Agus Supriyanto  , Sunandar  , Karyadi
Published: January 2023

Dalam era serba digitalisasi ini, masyarakat lebih menginginkan hal yang praktis, sebagai contoh jika ingin menginginkan barang atau makanan dengan segera maka perlu sampah plastik dalam pengemasan. Namun di wilayah Indonesia belum memadai mengenai infrastruktur pengolahan sampah plastik secara massal. Penelitian ini merupakan jenis penelitian kuantitatif dengan mengacu kepada penelitian komparatif yang membandingkan data yang sudah ada dengan rentan parameter yang sama antara pengujian yang sudah dilakukan dengan penahanan suhu dan tanpa penahanan suhu reaktor dengan debit yang sama agar dapat diketahui besar selisih dari parameter serta kualitas hasil yang sudah dilakukan dengan mengacu kepada data sekunder. Pada data pengujian dengan penahanan suhu pada LDPE menghasilkan kondensor yang lebih kecil dari suhu reaktor dan kondensor tanpa kondisi penahanan, Volum yang lebih banyak saat kondisi dengan penahanan suhu reaktor, Kejernihan bahan bakar dengan penahanan suhu reaktor terlihat lebih jernih dibanding tanpa penahanan suhu reaktor.Kata kunci: Pengolahan, Plastik, EfisienIn this era of digitalization, people prefer practical things, for example, if they want goods or food immediately, they need plastic waste in packaging. However, in Indonesia, there is not enough infrastructure for processing plastic waste in bulk. This research is a type of quantitative research that compares existing data with the same vulnerable parameters between tests that have been carried out with temperature holding and without reactor temperature detention with the same discharge to know the large difference between the parameters and the quality of the results obtained. Nothing has been done to secondary data. The test data with temperature holding on LDPE produces a condenser that is smaller than the reactor temperature and condenser without holding conditions, more volume when conditions with reactor temperature detention. The clarity of fuel with reactor temperature holding looks clearer than without reactor temperature detention.Keywords: Processing, Plastic, Efficient
ANALISIS CHASSIS MOBIL ROBOT PENANAMAN BIBIT KANGKUNG MENGGUNAKAN METODE ELEMEN HINGGA
Authors: Rizki Aulia Nanda  , Toto Supriyono  , Sugiharto  , Raja Aziz Raja Ma’arof  , Fathan Mubina Dewadi
Published: January 2023

Makalah ini membahas tentang analisis rangka mobil robot untuk penanaman bibit kangkung. Analisis ini meliputi pemilihan material yang digunakan, proses pembebanan, perpindahan, dan tegangan yang dihasilkan. Metode yang digunakan dalam penelitian ini adalah berbasis simulasi menggunakan analisis elemen hingga dengan Autodesk Inventor 2020. Material yang digunakan adalah Baja Galvanis. Hasil penelitian menunjukkan bahwa dengan beban sebesar 261,9 N dan 284,09 N, tegangan maksimum sebesar 38,03 MPa dan perpindahan maksimum sebesar 1,49 mm yang terjadi pada 8 titik struktur. Dari hasil tersebut dapat disimpulkan bahwa rangka struktural yang digunakan untuk mobil robot aman pada faktor keamanan hingga 5,4. Terbukti bahwa tegangan luluh yang terjadi 38,03 MPa lebih kecil dari 207 MPa spesifikasi tegangan luluh material.

This paper discusses about the analysis of mobile robot frame for planting water spinach seeds. This analysis includes the selection of the materials used, the loading process, displacement, and the stresses result. The method used in this research is simulation-based using finite element analysis with Autodesk Inventor 2020. The material used is Galvanized Steel. The results showed that with a load of 261.9 N and 284.09 N, the maximum Von misses stress was 38.03 MPa and the maximum displacement was 1.49 mm that occurred at point 8 on structure. From these results, it can be concluded that the structural frame used for mobile robot is safe at a safety factor of up to 5.4. It is proven that the yield stress, of course, that occurs 38.03 MPa less than 207 MPa of material.
ANALISIS SIFAT MEKANIS BAJA St.60 HASIL PENGELASAN FRICTION WELDING DENGAN VARIASI PENDINGIN
Authors: Agus Suprayitno  , Rohman  , Dimas Sanjaya
Published: January 2023

Banyaknya komponen dalam industri manufaktur memerlukan penggunaan teknik pengelasan yang efektif dan efisien. Pengelasan gesekan adalah metode penyambungan benda padat di mana laju rotasi satu benda kerja digabungkan dengan laju rotasi ujung benda kerja yang lain. Durasi gesekan, kecepatan rotasi, dan tekanan merupakan variabel penting dalam pengelasan gesekan karena mempengaruhi kualitas dan hasil proses. Material yang digunakan dalam penelitian ini adalah baja St.60. Parameter yang digunakan dalam penelitian ini adalah kecepatan putar 2300 rpm, waktu gesekan 60 detik dan tekanan 70 Psi. Dengan memvariasikan pendingin. Setelah pengelasan gesekan, benda kerja dipadamkan dengan minyak pendingin, air garam, udara dan air. Untuk mengetahui sifat mekanik dari hasil pengelasan ini dilakukan pengujian kekerasan dan pengujian tarik. Dari hasil penelitian ini diketahui bahwa variasi cairan pendingin mempengaruhi metode las gesekan. Hasil kekerasan tertinggi daerah sambungan sebesar 170 HB terdapat pada variasi fluida pendingin air asin, kekerasan terendah pada daerah sambungan sebesar 112,33 HB terdapat pada variasi fluida pendingin udara. Hasil kekuatan tarik tertinggi sebesar 517,82 N/mm² terdapat pada variasi pendingin air asin. sedangkan kekuatan tarik terendah sebesar 291,70 N/mm² terdapat pada variasi fluida pendingin air.

Many components in the manufacturing industry necessitate the use of effective and efficient welding techniques. Friction welding is a method of joining solid objects in which the rotation rate of one workpiece is combined with the rotation rate of the other end of the workpiece. Friction duration, rotational speed, and pressure are all critical variables in friction welding because they affect the quality and outcome of the process. The material used in this research is St.60 steel. The parameters used in this study are the rotational speed of 2300 rpm, the friction time of 60 seconds and the pressure of 70 Psi.  By varying the coolant. After friction welding , the workpiece is quenched with coolant oil, salt water, air and water. To determine the mechanical properties of this welding result, this research is carried out by testing the hardness and tensile testing. From the results of this study, it is known that the variation of the coolant affects the friction welding  method. The result of the highest hardness of the connection area of 170 HB is found in the variation of the salt water cooling fluid, the lowest hardness of the connection area of 112.33 HB is found in the variation of the air cooling fluid. The result of the highest tensile strength of 517.82 N/mm² was found in the variation of the salt water coolant. while the lowest tensile strength of 291.70 N/mm² was found in the variation of the water cooling fluid.
STUDI SIFAT MEKANIS HASIL PENGELASAN DENGAN METODE LAS GESEK PADA MATERIAL BAJA TAHAN KARAT AISI D2 & AISI 304
Authors: Deni  , Riyan Ariyansah  , Murtalim  , Ade Sunardi  , Adhes Gamayel
Published: January 2023

Teknik pengelasan telah lama digunakan untuk menyambung logam dengan adanya media panas. Busur listrik, nyala oxy-acetylene, dan gesekan digunakan sebagai sumber panas. Pengelasan gesekan adalah prosedur pengelasan keadaan padat di mana panas dihasilkan oleh dua logam yang saling bergesekan, menyebabkan logam meleleh dan kemudian membeku bersama, membentuk sambungan las. Pengelasan fusi adalah jenis sambungan las yang paling umum saat ini. Keuntungan dari pengelasan ini adalah tidak memerlukan logam pengisi, cepat, dan suhu operasi di bawah titik leleh logam. Manfaat lain dari proses pengelasan ini adalah menghemat bahan dengan tidak memerlukan logam pengisi, fluks, atau gas pelindung, serta memiliki waktu pengelasan yang singkat. Penelitian ini membahas mengenai pengelasan gesek untuk mengetahui sifat mekanis  pada pengelasan gesek logam AISI D2/ AISI 304. Metode yang digunakan dengan pengujian yaitu : uji tarik dan uji kekerasan (Vickers). Pada pengujian ini didapat nilai uji tarik paling tinggi terdapat pada specimen no 9 yaitu 352Mpa denagn parameter  waktu gesek 70s, tekanan tempa 2,5 Mpa dan waktu tempa 35s. dan untuk hasil Uji kekerasan dengan nilai yang tinggi  terdapat pada specimen no 9 area weld yaitu 649HV dengan parameter waktu gesek 70s, tekanan tempa 2,5 Mpa dan waktu tempa 35s.

Welding techniques have been used extensively in joining metal to hot media. The heat source used comes from an electric arc, an oxy-acetylene flame and friction. Friction welding is a method of solid state welding, where the heat generated by two metals rubbing together so that the metal melts and then solidifies together into a weld joint. Welding joints that are most widely used today is fusion welding. The advantages of this welding are that it does not require a charger, the welding time is fast and the operating temperature is below the melting point of the metal. Other advantages of this welding technique are material preservation because it does not require a charger, flux and gas shield, short welding time and operating temperature below the melting point of the metal. This study discusses friction welding to see the mechanical of AISI D2 / AISI 304 metal friction welding. The methods used are: , tensile test and hardness test (Vickers).  In this test, the highest tensile test value was found in specimen No. 9, namely 352Mpa with the parameters of friction time of 70s, forging pressure of 2.5 Mpa and forging time of 35s. and for the results of the hardness test with a high value found in specimen No. 9 the weld area is 649HV with a friction time parameter of 70s, forging pressure of 2.5 Mpa and forging time of 35s.