bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of capillary arrays on the profile of multi-layer micro-capillary films
Authors: Xiao Jianhua , Yang Ru , Song Shiqiang , Wang Haibin , Wen Haiwei 
Published: October 2023

Abstract
Multi-layer micro-capillary films (MCFs) have broad application prospects in the micro-fluid field. These films consist of two-dimensional arrays of hollow microcapillaries. The arrangements of hollow microcapillary arrays in extrusion die strongly influence the shape and size of multi-layer MCFs. However, most of the studies focus on a single-layer film. In this study, the models of multi-layer MCF extrusion die with hollow capillary arrays from one layer to four layers have been modeled. Numerical simulations show that when the hollow capillary arrays in different layers are aligned, the aspect ratio of the capillary is smaller and the flow resistance is small, so this kind of multi-layer MCF is suitable for micro-reactor and melt pump. When the hollow capillary arrays in different layers are non-aligned, the aspect ratio of the capillary is relatively larger and the specific surface is bigger, so this kind of multi-layer MCF has a high capability of heat exchange and is suitable for micro heat exchangers.
UAV-based doline mapping in Brazilian karst: A cave heritage protection reconnaissance
Authors: Ferreira Cristiano Fernandes , Hussain Yawar , Uagoda Rogério , Silva Tiago Castro , Cicerelli Rejane Ennes 
Published: October 2023

Abstract
Dolines are depressions in the soluble ground that indicates the degree of karstification. They may also act as connection points (vulnerability spots) between the surface and underground for the transmission of runoff, sediments, and pollutants. The delineation of these spots (dolines) is a crucial step in environmental management through land use planning to protect the karst underground, which is rich in flora and fauna. This requirement can benefit from a cost-effective, accessible, and non-invasion high-resolution investigation generating digital elevation models (DEMs) from unmanned aerial vehicle (UAV) imagery and automated object detection techniques. This study examines the capabilities of UAV-based DEM in detecting dolines across 50 km2 in the environmentally protected area of river Vermelho (APANRV – Área de Proteção Ambiental das Nascentes do Rio Vermelho). Initially, an automatic objects (doline and no-doline) detection algorithm was applied to the DEM, followed by a visual inspection to differentiate doline from possible dolines in orthomosaic photos, topographic profiles, and shaded UAV-based relief (digital terrain model; DTM and DSM). For the redundancy checking, a cluster analysis with four tests was conducted. The objects generated from the best clusters and morphological analysis were gathered in the same base for visual inspection. Out of a total of 933 objects identified, 41% were obtained from the DSM base, 25% from the perimeter-to-area ratio, and 34% through convergence between the two-analyses. Subsequently, the resulting doline typologies are discussed in reference to their proximity to hydrogeological features and their impacts on underground vulnerability. The findings aligned with the previous research as dolines were highly concentrated near sites where carbonates come in contact with siliciclastic sediments.
Multimodal arguments: language, script, and politics
Authors: Soulaimani Dris 
Published: October 2023

Abstract
This study uses discourse analysis to investigate the connectedness between embodiment and the politics of orthography. Drawing on a video-recorded conversation from a large sociolinguistic dataset on Amazigh/Berber, the study examines the role of embodied acts not only as semiotic resources that elaborate talk but also as consequential discursive entities that organize political arguments about script. The participants use multimodal utterances that extend beyond meaning to iconize social orientation as well as power in conversation. Analysis of the video reveals the way participants map their social perceptions of the language and its script onto their talk and embodied actions. Analysis also shows how script arguments mirror larger political debates in Morocco, in which script preferences are based on ideological and political orientations.
Biopolymeric conjugation with metals and their applications
Authors: Ray Sriparna 
Published: October 2023

Abstract
The pressing priority in designing sustainable materials has to focus on decreasing dependence on fossil fuel as well as utilization of environmentally friendly bio-based resources. In this respect, materials derived from biopolymers are competent in both aspects. While these materials tend to be biocompatible and biodegradable, they can be cultivated from natural renewable resources. To incorporate specific functionalities, these biopolymers can be chemically modified to form the metal based biopolymeric conjugates. Often these conjugates are designed as nano-entities, thereby, leading to their unique inherent properties. Characterization of these biopolymeric conjugates of metals encompass interdisciplinary analytical techniques like, UV–visible (UV–vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, elemental (CHN) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD) analysis, etc. In terms of applications, a wide variety of activity has been discovered by various research groups and hence these hybrid materials can be utilized as medications, pharmaceuticals, chemical catalysts, food packaging, electronics, and many more. Herein, a brief overview of different biopolymeric conjugates of diverse metals has been given, whereby their synthesis, characterization as well as their specific applications have been reviewed.
Integrating metrological principles into the Internet of Things: a digital maturity model for sensor network metrology
Authors: Eichstädt Sascha , Gruber Maximilian , Vedurmudi Anupam Prasad 
Published: October 2023

Abstract
The development and integration of metrological processes to address complex, large-scale systems of interconnected measuring instruments, i.e., sensor networks, has been a topic of increasing importance in the last decade. Initial developments in sensor network metrology include, e.g., metrological treatment of sensors with digital-only output, measurement uncertainty evaluation for time series data, and the digital representation of metrological information of such sensors. In principle, modern digital technologies allow for a fully automated operation of even rather complex sensor networks. However, the integration of metrological principles to provide confidence in the measurement results in such networks is still at its beginning. In this contribution we consider a recently published structured approach to assess digital maturity based on the level of machine-readability and machine-actionability. We apply this approach to sensor networks, define the different levels of digital maturity, and discuss potential steps for further evolving the integration of metrological principles for the Internet of Things (IoT).
Building Autonomous Power: Solidarity Networks in Precarious Times
Authors: Anderson Benjamin , Jenkinson John 
Published: October 2023

From COVID-19 to the so-called labour shortage of late 2021, the past three years have revealed a renewed discourse on labour markets and working conditions. Alongside this discourse, workers in a variety of industries have been organising to fight the rollbacks, redundancies and concessions imposed in response to the pandemic and its related financial crisis. From Amazon warehouse workers to hospitality workers to informally employed platform workers, the global precarious are rising up. In addition to traditional labour movement tactics, one tool that has proven powerful and flexible in the COVID period is the autonomous solidarity network. Built from the model of the worker centre, a labour solidarity network is conceived of as a decentralised grouping of workers, organisers and allies, usually operated virtually and at arms-length from formal union structures. Following the methodological foundation of workers’ inquiry and using the tools of strategic labour research and participatory action research, this article reports on interviews with workers and organisers involved with worker centres and solidarity networks, distilling their experiences and observations into a set of common practices that characterise worker organising efforts taking place in a number of Canadian workplaces, including hospitality, migrant work programs, platform services and artisanal industries.
In addition to traditional labour movement tactics, one tool that has proven powerful and flexible in the COVID period is the autonomous solidarity network. Built from the model of the worker centre, a labour solidarity network is conceived of as a decentralized grouping of workers, organizers and allies, usually operated virtually and at arms-length from formal union structures.
Following the methodological foundation of workers’ inquiry, this article reports on interviews with workers and organizers involved with worker centres and solidarity networks, distilling their experiences and observations into a set of common practices that characterize worker organizing efforts taking place in a number of Canadian workplaces, including hospitality, migrant work programs, platform services, and artisanal industries.
Protein 4.1N Plays a Cell Type-Specific Role in Hippocampal Glutamatergic Synapse Regulation
Authors: Pushkin Anna N. , Kay Yuni , Herring Bruce E. 
Published: October 2023

Many glutamatergic synapse proteins contain a 4.1N protein binding domain. However, a role for 4.1N in the regulation of glutamatergic neurotransmission has been controversial. Here, we observe significantly higher expression of protein 4.1N in granule neurons of the dentate gyrus (DG granule neurons) compared with other hippocampal regions. We discover that reducing 4.1N expression in rat DG granule neurons of either sex results in a significant reduction in glutamatergic synapse function that is caused by a decrease in the number of glutamatergic synapses. By contrast, we find reduction of 4.1N expression in hippocampal CA1 pyramidal neurons has no impact on basal glutamatergic neurotransmission. We also find 4.1N's C-terminal domain (CTD) to be nonessential to its role in the regulation of glutamatergic synapses of DG granule neurons. Instead, we show that 4.1N's four-point-one, ezrin, radixin, and moesin (FERM) domain is essential for supporting synaptic AMPA receptor (AMPAR) function in these neurons. Altogether, this work demonstrates a novel, cell type-specific role for protein 4.1N in governing glutamatergic synapse function.SIGNIFICANCE STATEMENTGlutamatergic synapses exhibit immense molecular diversity. In comparison to heavily studied Schaffer collateral, CA1 glutamatergic synapses, significantly less is known about perforant path-dentate gyrus (DG) synapses. Our data demonstrate that compromising 4.1N function in CA1 pyramidal neurons produces no alteration in basal glutamatergic synaptic transmission. However, in DG granule neurons, compromising 4.1N function leads to a significant decrease in the strength of glutamatergic neurotransmission at perforant pathway synapses. Together, our data identifies 4.1N as a cell type-specific regulator of synaptic transmission within the hippocampus and reveals a unique molecular program that governs perforant pathway synapse function.
Spiritual Emotional Freedom Technique (SEFT) as a Curative Effort for Post-Traumatic Stress Disorder (PTSD) Sufferers By Stimulating Sense of Mujahadah An-Nafs
Authors: Wahyudi Heri Fadli , Awalia Awalia 
Published: October 2023

Abstrak: Spiritual Emotional Freedom Tehnicque (SEFT) adalah teknik yang mengandung ilmu spiritual dan penyelarasan dengan sistem energi yang di dalam tubuh manusia untuk mengatasi masalah fisik dan emosional. Tujuan penelitian ini adalah agar dapat memahami bagaimana cara kerja SEFT untuk menangani rasa trauma masa lalu (Post Traumatic Stress Disorder) yang ada pada konseli. Metode penelitian yang digunakan dalam penelitian kali ini adalah pendekatan kualitatif dengan jenis studi kasus. Sementara teknik pengumpulan data yang digunakan adalah wawancara, observasi dan dokumentasi yang dilakukan secara langsung untuk mengetahui masalah yang hadapi oleh konseli. Hasil dari penelitian ini adalah SEFT dapat memebantu konseli dalam menangani trauma yang dialami di masa lalu. Penggunaan SEFT dengan menumbuhkan rasa Mujahada an-Nafs, menjadikan konseli merasa lebih tenang jika dibandingkan dengan kondisi sebelum penerapan SEFT dalam proses konseling yang dilakukan.Abstract: Spiritual Emotional Freedom Technique (SEFT) is a technique that contains spiritual science and alignment with the energy system in the human body to overcome physical and emotional problems. This study aims to understand how SEFT work to deal with past trauma (Post Traumatic Stress Disorder) that exists in clients. The research model used in this research is a qualitative approach with a type of case study. At the same time, the data collection techniques used are interview techniques, observation techniques and documentation techniques that are carried out directly to find out the problems faced by the client. The result of this study is that SEFT can help clients deal with trauma experienced by clients in the past. And the use of SEFT, by fostering a sense of Mujahadah an-Nafs, makes clients feel calmer compared to conditions before applying SEFT in the counselling process.
An Analysis of English Learning at Kebangsaan Pos Bersih School Malaysia
Authors: Suryadien Denda , Ainissyifa Hilda , Fatonah Nurul , Balqis Binti Khairulnizam Nur 
Published: October 2023

The purpose of writing this article is to analyze the main problems faced by students and teachers in learning English at the Sekolah Kebangsaan Pos Bersih elementary school in Malaysia. Assess the effectiveness of learning methods and provide recommendations for English learning strategies. This study used a descriptive qualitative methodology with data collection using interviews, moderate participant observation, documentation and literature review. Data from interviews, observations, documentation and literature reviews will be contrasted to identify consistency and differences in teacher practices in providing language learning infrastructure through comparative analysis, research findings will be strengthened and provide a more holistic picture of the problem under study. The results of the discussion are that the researcher found the problems of students in learning English at the SK Pos Bersih 1) motivation and interest 2) limited understanding of English at the beginning 3) Lack of use of English in daily life 4) lack of confidence when communicating as well as for teachers 1) emphasis on standardized tests 2) High Workload. Then the writing of designing strategic suggestions with literature reviews includes 1) encouraging active student involvement 2) Integration of Educational Technology 3) project-based learning 4) student-centered learning. Keywords: english, low school, learning quality
CALCULATION OF THE STRESS-STRAIN STATE OF THE NOSE STAND OF AN AIRCRAFT LANDING GEAR WITH A RADIUS TRANSITION BY THICKNESS WHEN BUILDING A LOCAL MODEL
Authors: Levytska T. , Pozhuieva I. , Mytryashkin O. , Manzhos O. 
Published: October 2023

Purpose. Study of the stress-strain state and fatigue life of the local zone of the compartment structure, namely, the radial transition between the wall thicknesses from the regular zone to the place of thickening in the connection zone with the reinforcement element. The main task of this work is to estimate the level of stress in the zone of the radial transition using the numerical solution of the problem, for the further assessment of the resource of the structure.
Research methods. Construction of a local model and numerical calculations of the stress-strain state of the considered structure using PATRAN/NASTRAN software complexes. Using the Mesh Seed tool to mark the position of nodes on the edges of surfaces. In addition to flat elements, bar elements were used in the model to simulate rivets. For the numerical solution of the presented problem, the nonlinear solver 106 - Nonlinear Static was used.
Results. A numerical calculation of the stress-strain state of the nose strut of the aircraft landing gear with a radial transition in thickness during local modeling was carried out. Visualization of linear displacement and fields of normal stresses, as well as graphs of normal stresses on the lower and upper surface of the wall, and the dependence of the values of normal stresses in the radial transition zone were obtained. The deflection of the plate between the reinforcement element is plotted and the maximum deflection in the middle of the span is obtained.
Scientific novelty. Application of the method of calculating the stress-strain state of complex structures of aviation equipment elements using computer software complexes in the conditions of modern development of aviation science and technology.
Practical value. The obtained calculations made it possible to estimate the resource of the local area of the structure - the radius transition between different wall thicknesses. The results of the analysis and the method of numerical calculation of the stress-strain state of the considered model can be used for further assessment of the resource and static strength of the structure of the aircraft landing gear compartment.
PREDICTION OF MICROHARDNESS OF ASD-1 POWDER COLD SPRAYING COATINGS
Authors: Shorinov O. , Dolmatov A. , Balushok K. , Polyviany S. 
Published: October 2023

Purpose. To develop a mathematical model for describing the dependence of the microhardness of ASD-1 aluminum powder coatings on the three main factors of the cold gas-dynamic spraying process using statistical methods of experiment planning.
Research methods. Methods of statistical planning of multifactorial experiments and regression analysis were used to conduct experimental research. The analysis of microhardness was performed according to the standard methodology given in GOST 9450-76. Preparation of transverse microsections for microhardness studies was carried out according to standard methods for preparing samples for metallographic analysis of microstructure. The specialized computer program Stat-Ease 360 was used to process statistical data.
Results. The complex effect of cold gas spraying process parameters on the microhardness of ASD-1 powder coatings in a wide range of values was investigated. According to the results of experimental studies, it was established that in the investigated ranges of the deposition modes, it is possible to obtain microhardness of coatings in range from 49 to 66 HV0.15. The dispertion analysis results showed that the gas temperature and the stand-off distance have the greatest effect on the microhardness of the coatings, while the powder feed rate has no significant effect on the microhardness. The obtained regression equation can be used to predict the microhardness of coatings from the ASD-1 powder, and the error between the calculated and actual values does not exceed 5%.
Scientific novelty. Empirical dependences of the microhardness of ASD-1 powder coatings, deposited by cold spraying, on the gas temperature at the nozzle inlet, stand-off distance, and powder feed rate in the specified ranges of values were obtained.
Practical value. The obtained dependences of the coating microhardness on the process parameters can be used to select modes of cold spraying of protective and restorative coatings, in particular on aircraft engine parts.
PROSPECTS FOR USE AS SUBSTITUTES OF HEAT-RESISTANT DIE STEELS, HIGH-NITROGEN AUSTENITIC CHROMIUM-MANGANESE STEELS WITH VANADIUM AND MOLYBDENUM
Authors: Hrabovskyi V. , Kaniuka V. , Lysytsia O. , Yershov A. 
Published: October 2023

Purpose. To study the effectiveness of additional (along with vanadium) alloying of high-nitrogen austenitic chromium-manganese steels with molybdenum to determine the prospects for their use instead of high-temperature resistant serial martensitic stamped steels.
Research methods. Metallographic, durometric, tensile and impact strength tests at room and high temperatures..
Results. The peculiarities of dispersion hardening and microstructures of the investigated high-nitrogen austenitic chromium-manganese steels alloyed with vanadium and molybdenum were determined. The mechanical properties of the selected steels were determined depending on the content of strengthening alloying elements. Significant advantages in the high-temperature (750 and 850 °C) strength of high-nitrogen austenitic chromium-manganese steels alloyed with vanadium and molybdenum were found compared to the serial high-temperature stamping steel 5Х3В3МФС (ДИ23). The highest hardness and strength values correspond to the research steel 60Х11Г16АФ2М2, which allows us to recommend it as an effective substitute for die steels when required to provide increased resistance to high-temperature dehardening of hot-die tools.
Scientific novelty. An abnormal presence of a minimum on the dispersion hardening curves of high-nitrogen austenitic chromium-manganese steels with molybdenum and its shift towards a shorter aging duration with increasing aging temperature have been determined. The formation of large particles of primary excess phases with increasing vanadium and molybdenum content in steels was revealed. The dependence of strength and ductility characteristics on the total alloying of the studied austenitic chromium-manganese steels with nitrogen and carbon was established.
Practical value. The effectiveness of molybdenum alloying along with vanadium in high-nitrogen austenitic chromium-manganese steels has been established to provide significant (1.5...2.5 times) advantages in high-temperature strength compared to heat-resistant commerciall stamped steels.. The research steel 60Х11Г16АФ2М2 may be the most promising substitute for die steels under high force loads at operating temperatures of 750 °C and above.