bluuebunny/crossref_metadata_2025 huggingface dataset:
The half-metallic properties of Heusler alloys Mn-=SUB=-2-=/SUB=-ScZ (Z=Al, Si, P, Ga, Ge, As, In, Sn, Sb): ab initio study
Authors: Baigutlin D. R.  , Sokolovskiy V. V.  , Miroshkina O. N.  , Buchelnikov V. D.
Published: January 2023

The properties of Heusler alloys of the Mn2ScZ family (Z=Al, Si, P, Ga, Ge, As, In, Sn, Sb) are investigated within the framework of the density functional theory. The PBE GGA and meta-GGA SCAN functionals were used for approximation of the exchange-correlation interactions. Calculations show that PBE does not predict ideal half-metallic behavior, unlike SCAN. It is shown that at Z=P, Si, a transition from the half-metallic state to the metallic one is observed. This effect can be used to develop tunable spintronic devices. Keywords: exchange-correlation functional, meta-GGA SCAN, half-metal ferromagnets, Heusler alloys.
First-principle studies of the tendency towards segregation in Heusler alloys Ni-=SUB=-2-=/SUB=-Mn-=SUB=-1+x-=/SUB=-Sb-=SUB=-1-x-=/SUB=- with different atomic ordering
Authors: Erager K. R.  , Sokolovskiy V. V.  , Buchelnikov V. D.
Published: January 2023

Using ab initio calculations, the stability issues of a series of Heusler alloys Ni2Mn1+xSb1-x (x=0, 0.25, 0.5, 0.75, 1) with staggered and layer-by-layer ordering of Mn atoms are investigated. It is shown that compositions with an excess of Mn are stable with respect to decomposition into constituent elements and unstable with respect to decomposition into a two-phase system consisting of a ferromagnetic cubic L21-phase Ni2MnSb and an antiferromagnetic tetragonal L10-phase NiMn. Thus, all nonstoichiometric compositions in the austenite and martensitic phases, taking into account different magnetic and atomic ordering, tend to segregate. Stability of alloys is possible only in stoichiometric compositions (x=0 and 1). Keywords: Heusler alloys, ab initio calculations, segregation, phase stability.
High-frequency EPR spectroscopy of paramagnetic manganese centers in GaAs : Mn crystals
Authors: Babunts R. A.  , Gurin A.S.  , Ilyin I.V.  , Bundakova A.P.  , Muzafarova M.V.  , Badalyan A. G.  , Romanov N. G.  , Baranov P. G.
Published: January 2023

High-frequency electron paramagnetic resonance (EPR) is used to study the unique properties of manganese centers in a GaAs : Mn crystal in strong magnetic fields at low temperatures. At frequencies of 94 and 130 GHz, EPR transitions were recorded in the MnGa2+-SH complex, which is a manganese ion with spin S=5/2, which replaces gallium (MnGa2+) and an ionized acceptor (A-) associated via an isotropic antiferromagnetic exchange interaction with a shallow hole (SH) with angular momentum J=3/2. A complex system of energy levels of this complex in a magnetic field and the possibility of accurately determining exchange interactions from EPR spectra are analyzed. Another complex was investigated, in which an ionized acceptor MnGa2+ interacts with a localized hole center in the form of a diamagnetic ion O2- replacing As. This complex, MnGa2+-OAs2-, is characterized by axial symmetry along the <111> axis of the cubic GaAs crystal and an anisotropic EPR spectrum. Due to the high Boltzmann factor, in our studies, the order of the fine structure spin levels of this complex was determined. The effect of the Boltzmann populations of the energy levels on the high-frequency EPR spectra was also demonstrated for the MnGa2+-SH complex. Keywords: high-frequency EPR, GaAs crystal, Mn acceptor, shallow hole, exchange interaction.
Peculiarities of transformation of metastable austenite into deformation martensite during laser cladding with cored wire 60Cr7TiAl
Authors: Gokhfeld N. V.  , Filippov M. A.  , Korobov Y. S.  , Estemirova S. K.  , Morozov S. O.
Published: January 2023

Fe-Cr-C-T-Al flux-cored wire surfacing was performed by laser, arc and hybrid methods. Laboratory tests have shown that the deposited layers vary greatly in terms of wear resistance. To identify the reasons, studies were carried out using metallographic, X-ray structural and durometric methods. The analysis of the research results showed that the reason is the difference in the cooling rates of the deposited metal in the range of 1100-800 K. This difference leads to the possibility of the formation of a metastable austenitic structure, which, in turn, affects the wear resistance of the deposited layers. Keywords: cored wire, wear resistance, metallography, X-ray diffraction, microhardness, laser cladding, arc deposition, hybrid deposition.
Homogenization annealing and magnetic properties of a sample of the Laves phase GdNi-=SUB=-2-=/SUB=-
Authors: Mashirov A.V.  , Musabirov I. I.  , Anikin M. S.  , Semkin M. A.  , Mitsiuk V. I.  , Gaifullin R. Y.  , Koledov V. V.  , Shavrov V. G.
Published: January 2023

The paper shows the effect of homogenization annealing on the ferromagnet-paramagnet phase transition in the GdNi2 alloy. In the cast sample, at the Curie point, a temperature hysteresis is observed, which in an external magnetic field of 13.5 T can be at least 3 degrees. The data of scanning electron microscopy of the electropolished samples showed a decrease in the impurity phase of GdNi and practically no temperature hysteresis of the phase transition in the annealed GdNi2 sample. The value of the isothermal change entropy Delta Sm=-18.931 J/(kg·K) for an annealed sample of the GdNi2 alloy at the Curie point of 75 K in a magnetic field of 13.5 T. Keywords: magnetocaloric effect, GdNi2, Laves phases.
Magnetostructural features of phase transitions in the Mn-=SUB=-1-x-=/SUB=-Co-=SUB=-x-=/SUB=-NiGe system Part 1. Experimental results
Authors: Mitsiuk V.I.  , Rimskiy G.S.  , Yanushkevich K.I.  , Koledov V.V.  , Mashirov A.V.  , Val'kov V.I.  , Golovchan A.V.  , Kovalev O.E.
Published: January 2023

Experimental studies of the magnetic and structural properties of solid solutions of the Mn1-xCoxNiGe system in a wide range of Co concentrations (0.05≤ x≤ 0.8), temperatures (5 K≤ x≤600 K) and magnetic fields (0.016 T≤ x≤ 13.5 T) have revealed a number of nontrivial magnetic and magnetocaloric features of this system. The latter include: 1) a change in the nature of magnetic phase transitions from magnetostructural transitions of the 1st order paramagnetism-antiferromagnetism (0.05≤ x≤ 0.15) to isostructural transitions of the 2nd order paramagnetism-ferromagnetism (0.15≤ x≤0.8) with a change in the concentration of Co ; 2) anomalous behavior of low-temperature regions of magnetization in weak magnetic fields; 3) a change in the saturation magnetization and the appearance of irreversible magnetic field-induced transitions at helium temperatures in strong magnetic fields. Keywords: irreversible magnetostructural first-order phase transition, helimagnetism, direct and inverse magnetocaloric effects.
Linear dynamics of spin waves in an array of YIG waveguides
Authors: Khutieva A. B.  , Beginin E. N.  , Sheshukova S. E.  , Sadovnikov A. V.
Published: January 2023

The features of spin-wave transport in a system of coupled magnetic microwaveguides with perpendicular magnetization relative to the longitudinal axis of the system are considered. In this case, the system has uniaxial anisotropy, the horizontal and vertical coupling coefficients have different signs, and the isofrequency surfaces have a "saddle" shape. In the propagation of transversely limited beams of spin waves, the type of curvature of the wave fronts is determined by the direction of wave propagation relative to the external magnetic field. Keywords: spin waves, magnonics, microwaveguides, lateral structures.
Impedancemetry of Ag-=SUB=-2-=/SUB=-S nanocrystallites embedded in nanoporous glasses
Authors: Ilinskiy A.V.  , Castro R.A.  , Pashkevich M.E.  , Popova I.O.  , Sidorov A.I.  , Shadrin E.B.
Published: January 2023

The temperature dependences of the dielectric spectra of Ag2S nanocrystallites synthesized inside the channels of nanoporous glasses NPG-17 with an average diameter of filamentous pores of 17 nm are studied. The macroscopic mechanism for the occurrence of the frequency dependence of the electrical response of a nanoporous structure NPG-17 + Ag2S is proposed. Formation of the model of mechanism is based superionic phase transition in Ag2S nanocrystallites fixed inside the channels of nanoporous glass is discussed. Keywords: silver sulfide, Ag2S, nanoporous glasses, nanostructured materials, impedancemetry.
Human buccal epithelial cell envelope reactions to external micromechanical stimuli
Authors: Torchov N. A.  , Evstigneev M. P.  , Mosunov A. A.  , Buchelnikova V. A.
Published: January 2023

The reaction of the shell of an adult living cell of human buccal epithelium to an external micromechanical stimulus was studied. The dependence of the magnitude of the reaction on the level of passive or active stimulation, namely, the level of force exposure, was established. It is shown that the cell can exhibit both active and passive reactions to an external micromechanical stimulus, as well as control the level of exposure to adhesive forces. Keywords: human buccal epithelium cell, shell, micromechanical stimulus, shell elasticity, AFM force spectroscopy.
Spatio-temporal processes in the position-sensitive detector with moving current-voltage characteristic
Authors: Podlaskin B.G.  , Guk E.G.  , Obolenskov A.G.  , Сухарев А.А.
Published: January 2023

The paper considers the features of transient phenomena during output signal generation in a position-sensitive detector (PSD) with a moving current-voltage (I-V) characteristic. The dependence of the linear and exponential parts of the movement trajectory of the I-V characteristic on the magnitude of voltage distributed over the resistive divider is studied. It is shown that optimizing the operating modes of the investigated PSDs in order to obtain maximum operation speed and maintain the specified resolution of the sensor requires maintaining a balance between the minimum of the applied voltage and the slope of the I-V characteristic in the aperture region. Keywords: position-sensing detector, moving current-voltage characteristic, operation speed.
InGaAlAs/InAlAs heterostructures for electro-absorption modulator
Authors: Gulyaev D. V.  , Kolosovsky D. A.  , Dmitriev D. V.  , Gutakovskii A. K.  , Kolosovsky E. A.  , Zhuravlev K. S.
Published: January 2023

The structural and optical characteristics of heterostructures with InGaAlAs/InAlAs quantum wells, in which a quaternary alloy is obtained by alternating monolayer growth of InAlAs and InGaAs layers by molecular beam epitaxy, have been investigated. It has been shown that obtained heterostructures are promising for creation of electro-absorption modulators designed for a wavelength of 1.55 μm with the extinction coefficient of more than 20 dB at a voltage of less than 4 V. Keywords: Electro-absorption modulator, molecular beam epitaxy, quantum wells, Stark effect.
Enhanced densification of porous nickel aluminide under shock compression
Authors: Yakushev V. V.  , Utkin A. V.  , Zhukov A. N.
Published: January 2023

Using a laser velocity interferometer, wave profiles were recorded in porous (porosity 30%) nickel aluminide samples. Data on shock compressibility were obtained. An abnormally high compaction was found, manifested in the intersection of Hugoniots of solid and porous samples at a pressure of 28 GPa, which indicates a phase transition. Keywords: shock waves, Hugoniot, phase transitions, laser Doppler interferometers, intermetallides.
Heterostructured AgCl/BN nanomaterials with high sorption capacity and photocatalytic activity
Authors: Konopatsky A. S.  , Popova D. V.  , Kalinina V. V.  , Leybo D. V.  , Matveev A. T.  , Shtansky D. V.
Published: January 2023

In this work, the photocatalytic activity and sorption capacity of heterogeneous structures AgCl/h-BN obtained by the polyol method were studied in comparison with the initial micron-sized h-BN powder. The chemical and phase composition, as well as the surface microstructure, were analyzed by scanning electron microscopy, energy dispersive spectroscopy, X-ray phase analysis, and X-ray photoelectron spectroscopy. High photocatalytic activity and sorption ability of heterogeneous structures AgCl/BN in the reaction of the organic dye methylene blue decomposition under ultraviolet irradiation were demonstrated. Keywords: heterogeneous materials, photocatalysis, hexagonal boron nitride, silver chloride.
Negative Mach Reflection with Multiple Three-Shock Configurations for Shock Wave Diffraction on a Wedge
Authors: Georgievskiy P. Yu.  , Maksimov A. N.  , Fokeev V. P.
Published: January 2023

Within the framework of the Euler equations, a numerical study of the structure of a self-similar flow for various types of negative Mach reflection during diffraction of a shock wave by a wedge is performed. Along with the known modes of double and triple Mach reflection, a qualitatively new mode of negative Mach reflection with multiple three-shock configurations is observed. Peculiarities of the transition from multiple Mach reflection to regular reflection when changing the wedge angle are noted. Keywords: shock wave, three-shock configuration, double Mach reflection, negative Mach reflection
Charge transfer in the vertical structures formed by two-dimensional layers
Authors: Davydov S. Yu.  , Lebedev A. A.  , Bulat P. V.
Published: January 2023

Electronic structures of superlattices and encapsulated layers are obtained by Green's function method. The simple scheme for estimation of interlayer charge transfer is proposed. As an example, layers of graphene and graphene-like compounds are considered. Keywords: 2D structure, superlattice encapsulated layer
Increasing the efficiency of triple-junction solar cells due to the metamorphic InGaAs subcell
Authors: Mintairov M. A.  , Evstropov V. V.  , Mintairov S. A.  , Nakhimovich M. V.  , Salii R.A.  , Shvarts M.Z.  , Kalyuzhnyy N. A.
Published: January 2023

The efficiency of GaInP/GaAs/InxGa1-xAs triple-junction solar cells obtained by replacing (in the widely used "classical" GaInP / GaAs / Ge heterostructure) the lower germanium with InxGa1-xAs subcell formed using the metamorphic growth technology has been investigated. Based on an original approach, the optimal indium concentration in the narrow-gap subcell has been found. The main parameters of InxGa1-xAs subcells with an indium concentration from x=0.11 to 0.36 were determined and were used to calculate the IV characteristics of GaInP/GaAs/InxGa1-xAs solar cells. It has been determined that at x=0.28 the efficiency of the triple-junction solar cell increases by 3.4% (abs) in comparison with the "classical" solar cell, reaching a value of 40.3% (AM1.5D). Also it has been shown that the efficiency of such solar cells can be increased up to 41%. Keywords: Multi-junction solar cells, photoconverters, metamorphic buffer. M.Z.Shvarts,
Double negative media based on antiferromagnetic metamaterials
Authors: Grishin S. V.  , Amel'chenko M. D.  , Sharaevskii Yu. P.  , Nikitov S. A.
Published: January 2023

The paper presents the theoretical study results of the dispersion characteristics of electromagnetic waves existing in antiferromagnetic (AFM) metamaterial. The AFM metamaterial consists of a transversely magnetized antiferromagnet, inside of which a two-dimensional periodic structure of thin conducting wires surrounded by insulators is placed. It has been established that the AFM metamaterial has two frequency ranges, in which there are backward waves, and the material pa-rameters of the medium are twice negative. The indicated areas are located in the terahertz range. Keywords: metamaterials, left-handed medium, antiferromagnetics, spin waves.
Structure and phase composition of films synthesized by laser sintering from polyvinylidene fluoride of various grades
Authors: Tarasova E. Yu.  , Zhuravleva I. I.  , Bakulin I. A.  , Kuznetsov S. I.  , Panin A. S.
Published: January 2023

The processes of laser synthesis of films with a thickness of 80-230 μm from polyvinylidene fluoride of various grades are studied. It is established that the range of synthesis modes does not depend on the grades of PVDF. The content of the piezo active β-phase decreases after laser treatment, but the complete transformation of β-> α does not occur. The process of thermos-oxidative degradation after laser treatment is not observed. Under the same treatment conditions, the higher the open porosity coefficient, the lower the polymer melt flow index (MFI). Depending on the MFI of the initial polymer, the selection of laser exposure modes can control the porosity of the films in the range of 26-68%. Keywords: laser treatment, polyvinylidene fluoride (PVDF), porous films, melt flow index.
Metamaterial absorber and antenna ground plane
Authors: R.O. Ryazantsev  , Y.P. Salomatov  , S.V. Polenga
Published: January 2023

Metamaterial absorber located near solid metal surface was investigated and antenna design was developed for receiving satellite navigation signals using absorptive ground plane comprises proposed material. The metamaterial structure has been developed, frequency characteristics have been analyzed by finite element method in frequency domain, operating dimensions of elements have been established. Modeling and analysis of radiation pattern for antenna with absorptive ground plane versus the antenna with the classic high impedance ground plane were carried out. Conclusions were drawn on the applicability of the proposed metamaterial structure. Keywords: GNSS Antenna, metamaterial absorber, high impedance ground plane.
Text Messages Exchanged Between Individuals With Opioid Use Disorder and Their mHealth e-Coaches: Content Analysis Study
Authors: Ranjit Yerina S , Davis Warren M , Fentem Andrea , Riordan Raven , Roscoe Rikki , Cavazos-Rehg Patricia
Published: January 2023

Background

Opioid use disorder (OUD) has affected 2.2 million people in the United States. About 7.2 million people reported using illicit drugs in 2019, which contributed to over 70,000 overdose deaths. SMS text messaging interventions have been shown to be effective in OUD recovery. However, the interpersonal communication between individuals in OUD treatment and a support team on digital platforms has not been well examined.

Objective

This study aims to understand the communication between participants undergoing OUD recovery and their e-coaches by examining the SMS text messages exchanged from the lens of social support and the issues related to OUD treatment.

Methods

A content analysis of messages exchanged between individuals recovering from OUD and members of a support team was conducted. Participants were enrolled in a mobile health intervention titled “uMAT-R,” a primary feature of which is the ability for patients to instantly connect with a recovery support staff or an “e-coach” via in-app messaging. Our team analyzed dyadic text-based messages of over 12 months. In total, 70 participants’ messages and 1196 unique messages were analyzed using a social support framework and OUD recovery topics.

Results

Out of 70 participants, 44 (63%) were between the ages of 31 and 50 years, 47 (67%) were female, 41 (59%) were Caucasian, and 42 (60%) reported living in unstable housing conditions. An average of 17 (SD 16.05) messages were exchanged between each participant and their e-coach. Out of 1196 messages, 64% (n=766) messages were sent by e-coaches and 36% (n=430) by participants. Messages of emotional support occurred the most, with 196 occurrences (n=9, 0.8%) and e-coaches (n=187, 15.6%). Messages of material support had 110 occurrences (participants: n=8, 0.7%; e-coaches: n=102, 8.5%). With OUD recovery topics, opioid use risk factors appeared in most (n=72) occurrences (patient: n=66, 5.5%; e-coach: n=6, 0.5%), followed by a message of avoidance of drug use 3.9% (n=47), which occurred mainly from participants. Depression was correlated with messages of social support (r=0.27; P=.02).

Conclusions

Individuals with OUD who had mobile health needs tended to engage in instant messaging with the recovery support staff. Participants who are engaged in messaging often engage in conversations around risk factors and avoidance of drug use. Instant messaging services can be instrumental in providing the social and educational support needs of individuals recovering from OUD.
Development of a Conversational Agent for Individuals Ambivalent About Quitting Smoking: Protocol for a Proof-of-Concept Study
Authors: Nair Uma S , Greene Karah , Marhefka Stephanie , Kosyluk Kristin , Galea Jerome T
Published: January 2023

Background

Cigarette smoking is the leading preventable cause of disease and death in the United States. Despite the availability of a plethora of evidence-based smoking cessation resources, less than one-third of individuals who smoke seek cessation services, and individuals using these services are often those who are actively contemplating quitting smoking. There is a distinct dearth of low-cost, scalable interventions to support smokers not ready to quit (ambivalent smokers). Such interventions can assist in gradually promoting smoking behavior changes in this target population until motivation to quit arises, at which time they can be navigated to existing evidence-based smoking cessation interventions. Conversational agents or chatbots could provide cessation education and support to ambivalent smokers to build motivation and navigate them to evidence-based resources when ready to quit.

Objective

The goal of our study is to test the proof-of-concept of the development and preliminary feasibility and acceptability of a smoking cessation support chatbot.

Methods

We will accomplish our study aims in 2 phases. In phase 1, we will survey 300 ambivalent smokers to determine their preferences and priorities for a smoking cessation support chatbot. A “forced-choice experiment” will be administered to understand participants’ preferred characteristics (attributes) of the proposed chatbot prototype. The data gathered will be used to program the prototype. In phase 2, we will invite 25 individuals who smoke to use the developed prototype. For this phase, participants will receive an overview of the chatbot and be encouraged to use the chatbot and engage and interact with the programmed attributes and components for a 2-week period.

Results

At the end of phase 1, we anticipate identifying key attributes that ambivalent smokers prefer in a smoking cessation support chatbot. At the end of phase 2, chatbot acceptability and feasibility will be assessed. The study was funded in June 2022, and data collection for both phases of the study is currently ongoing. We expect study results to be published by December 2023.

Conclusions

Study results will yield a smoking behavior change chatbot prototype developed for ambivalent smokers that will be ready for efficacy testing in a larger study.

International Registered Report Identifier (IRRID)

DERR1-10.2196/44041
Health System–Level Barriers to Living Donor Kidney Transplantation: Protocol for a Comparative Case Study Analysis
Authors: Horton Anna , Loban Katya , Nugus Peter , Fortin Marie-Chantal , Gunaratnam Lakshman , Knoll Greg , Mucsi Istvan , Chaudhury Prosanto , Landsberg David , Paquet Michel , Cantarovich Marcelo , Sandal Shaifali
Published: January 2023

Background

Living donor kidney transplantation (LDKT) is the best treatment option for patients with kidney failure and offers significant medical and economic advantages for both patients and health systems. Despite this, rates of LDKT in Canada have stagnated and vary significantly across Canadian provinces, the reasons for which are not well understood. Our prior work has suggested that system-level factors may be contributing to these differences. Identifying these factors can help inform system-level interventions to increase LDKT.

Objective

Our objective is to generate a systemic interpretation of LDKT delivery across provincial health systems with variable performance. We aim to identify the attributes and processes that facilitate the delivery of LDKT to patients, and those that create barriers and compare these across systems with variable performance. These objectives are contextualized within our broader goal of increasing rates of LDKT in Canada, particularly in lower-performing provinces.

Methods

This research takes the form of a qualitative comparative case study analysis of 3 provincial health systems in Canada that have high, moderate, and low rates of LDKT performance (the percentage of LDKT to all kidney transplantations performed). Our approach is underpinned by an understanding of health systems as complex adaptive systems that are multilevel and interconnected, and involve nonlinear interactions between people and organizations, operating within a loosely bounded network. Data collection will comprise semistructured interviews, document reviews, and focus groups. Individual case studies will be conducted and analyzed using inductive thematic analysis. Following this, our comparative analysis will operationalize resource-based theory to compare case study data and generate explanations for our research question.

Results

This project was funded from 2020 to 2023. Individual case studies were carried out between November 2020 and August 2022. The comparative case analysis will begin in December 2022 and is expected to conclude in April 2023. Submission of the publication is projected for June 2023.

Conclusions

By investigating health systems as complex adaptive systems and making comparisons across provinces, this study will identify how health systems can improve the delivery of LDKT to patients with kidney failure. Our resource-based theory framework will provide a granular analysis of the attributes and processes that facilitate or create barriers to LDKT delivery across multiple organizations and levels of practice. Our findings will have practice and policy implications and help inform transferrable competencies and system-level interventions conducive to increasing LDKT.

International Registered Report Identifier (IRRID)

DERR1-10.2196/44172
Barriers to and Facilitators of a Blended Cognitive Behavioral Therapy Program for Depression and Anxiety Based on Experiences of University Students: Qualitative Interview Study (Preprint)
Authors: Braun Pia , Atik Ece , Guthardt Lisa , Apolinário-Hagen Jennifer , Schückes Magnus
Published: January 2023

BACKGROUND

Blended cognitive behavioral therapy (bCBT) programs have been proposed to increase the acceptance and adoption of digital therapeutics (DTx) such as digital health apps. These programs allow for more personalized care by combining regular face-to-face therapy sessions with DTx. However, facilitators of and barriers to the use of DTx in bCBT programs have rarely been examined among students, who are particularly at risk for developing symptoms of depression and anxiety disorders.

OBJECTIVE

This study aimed to evaluate the facilitators of and barriers to the use of a bCBT program with the elona therapy app among university students with mild to moderate depression or anxiety symptoms.

METHODS

Semistructured interviews were conducted via videoconference between January 2022 and April 2022 with 102 students (mean age 23.93, SD 3.63 years; 89/102, 87.2% female) from universities in North Rhine-Westphalia, Germany, after they had completed weekly individual cognitive behavioral therapy sessions (25 minutes each) via videoconference for 6 weeks and regularly used the depression (n=67, 65.7%) or anxiety (n=35, 34.3%) module of the app. The interviews were coded based on grounded theory.

RESULTS

Many participants highlighted the intuitive handling of the app and indicated that they perceived it as a supportive tool between face-to-face sessions. Participants listed other benefits, such as increased self-reflection and disorder-specific knowledge as well as the transfer of the content of therapy sessions into their daily lives. Some stated that they would have benefited from more personalized and interactive tasks. In general, participants mentioned the time requirement, increased use of the smartphone, and the feeling of being left alone with potentially arising emotions while working on tasks for the next therapy session as possible barriers to the use of the app. Data security was not considered a major concern.

CONCLUSIONS

Students mostly had positive attitudes toward elona therapy as part of the bCBT program. Our study shows that DTx complementing face-to-face therapy sessions can be perceived as a helpful tool for university students with mild to moderate anxiety or depression symptoms in their daily lives. Future research could elaborate on whether bCBT programs might also be suitable for students with more severe symptoms of mental disorders. In addition, the methods by which such bCBT programs could be incorporated into the university context to reach students in need of psychological support should be explored.
Influence of PSG peptides on the morphofunctional state of the spleen in allogenous bone marrow cell transplantation
Authors:   Perm State Medical University named after I.I. academician. E.A. Vagner, Charushina Yulia A. , Loginova Natalya P. ,   Perm State Medical University named after I.I. academician. E.A. Vagner, Gulyaeva Natalia I. ,   Perm State Medical University named after I.I. academician. E.A. Vagner, Prokudin Vitaly S. ,   State public health institution of special kind «Perm Regional Bureau of Forensic Medical Examination», Lyubimov Alexander V. ,   University of Illinois, Chicago, USA, Zamorina Svetlana A. ,   Perm State National Research University
Published: January 2023

It is known that proteins associated with pregnancy provide immune tolerance during pregnancy. One of them is pregnancy-specific β1-glycoprotein (PSG), which has a pronounced immunomodulatory effect. Tetrapeptide fragments (YECE, YQCE, YVCS, and YACS) have been identified in the primary structure of PSG that have immunopharmacological potential. The aim of the study was to evaluate the effect of short peptide fragments of PSG on the morphological and immunohistochemical state of the spleen and its compartments during allogeneic transplantation of a suspension of red bone marrow cells in an in vivo experiment in Wistar rats. It was found that intraperitoneal injection of bone marrow cells in the dynamics of the experiment (35 days) caused splenic hyperplasia with accumulation of lymphoid cells and macrophages in the functional areas of the organ. Administration of short peptide fragments of PSG against the background of allogeneic bone marrow transplantation promotes activation of cells of the immune system in the spleen toward their proliferation (Ki-67) and differentiation, while reducing the content of macrophages (CD68). Thus, short peptide fragments of PSG stabilize proliferative processes and promote the development of adaptive responses in response to an allogeneic graft.
Empowerment of Santri in Efforts to Prevent Daily Emergency at Sidogiri Islamic Boarding School, Pasuruan, East Java
Authors: Rahariyani Loetfia Dwi , Suprihatin Kusmini , Sulystiono Dony , Maziyah Alfi
Published: January 2023

The number of Islamic boarding schools is increasing rapidly, leading to potential health problems, particularly emergency-related issues. This community service aims to improve the students’ health by preventing daily emergencies through the formation of a Healthy Santri Cadre. The benefits of this activity include improving the students’ health and preventing daily emergencies in the Islamic boarding school environment. This community service activity was held in collaboration with LAZ-Sidogiri during the COVID-19 pandemic, when the Sidogiri Islamic boarding school was in lockdown. The activity was divided into three stages: assessment, training of healthy santri cadres, and peer group training through healthy santri cadres. LAZ-Sidogiri staff trained 30 healthy santri cadres. The results of the study showed that all students had experienced emergency situations, with the most common being fever, falls, and cuts from sharp objects. The level of knowledge of the Healthy Santri Cadre before and after the training was statistically significant (p<0.05). The establishment of a Healthy Santri Cadre is essential in Islamic boarding schools as a means of preventing daily emergencies and increasing students’ ability to provide correct first aid.
Community Satisfaction Analysis of the Implementation of Semen Gresik Rembang Factory’s CSR
Authors: Paramita Mahditia , Hendra Hendra
Published: January 2023

Corporate Social Responsibility (CSR) is a form of corporate responsibility to the surrounding environment that the company must carry out to minimize environmental damage as a result of the establishment of the industry. This research wants to see the benefits of the program based on the results of community satisfaction assessment with quantitative and qualitative methods to determine the success of CSR program implementation. Public satisfaction with the implementation of the CSR program implemented by Semen Gresik Rembang Factory is directly proportional to the benefits obtained by the community. The success of the program is not only judged by the number of activities carried out, but also by the level of community satisfaction with the program and community participation in the program to support the improvement of the quality of human resources. Community capacity building is carried out through community empowerment programs to support sustainable development, which is an obligation in development in the world. The development and usefulness of activity programs need to be developed and expanded by beneficiaries to be able to solve problems that exist in the social, economic, and environmental spheres that are more effective and have a broader impact. The development and usefulness of activity programs need to be developed and expanded by beneficiaries to be able to solve problems that exist in the social, economic, and environmental spheres that are more effective and have a broader impact. The increase in community involvement also needs to be carried out not only in the process of identification, socialization, implementation, and monitoring of evaluation, but further participation until the community is able and participates in sharing more roles in the implementation of Corporate Social Responsibility activities carried out by Semen Gresik Rembang Factory.
ϖ-Interpolative Ciric-Reich-Rus-Type Contactions in m-metric space
Authors: Umair Muhammad , Hassan Ahmad , Hassan Ali , Hussain Abid , Faiz Habiba , Maqbool Sana Naz , Jamil Muahmmad
Published: January 2023

In this paper, using the concept of ϖ-admissibility, we prove some fixed -point results for interpolate Ciric-Reich-Rus-type contraction mappings. We also present some consequences and a useful example.
An Intelligent Disaster Prediction in Communication Network Using OAN-ANFIS Technique Based on TEM Feature Selection Approach
Authors: Lekhak Kamal
Published: January 2023

Abstract: Due to facility damage and a lack of power, natural disasters disrupt vital services. When the main nodes of a hierarchical network, such as a cellular communication system, are compromised or overloaded, major communication failures frequently happen over a large geographic area. High throughput satellite (HTS) is one of the best options for disaster management as an alternate communication capability since it offers effective communication for a large area regardless of the availability of conventional terrestrial infrastructures. Conventional HTS, on the other hand, uses fixed beam bandwidth and connections for relaying data, making it ineffective when communication demand spikes in a disaster area. Therefore, the work has developed an Intelligent Disaster prediction in a communication network that alters and empowers the decision-making process to avoid a False alarm rate toward transmitting data to the digital world in a better way using the OAN-ANFIS technique based on the TEM Feature selection approach. To limit the likelihood of inaccuracy, the suggested framework first preprocesses the data by transforming unstructured data into arranged manner. The preprocessing technique handles missing values, scaling, and addressing imbalanced data. Following that, the preprocessed data is subjected to Feature selection using the TEM technique, which combines three metaheuristic algorithms, namely Xinit-FSO, LCV-ChoA, and AL-HDC, to pick the optimum feature to train the node recognition model. To obtain a high accuracy rate, the proposed Feature selection technique captures the most known feature to train the model. Finally, OAN-ANFIS predicts the various Disaster limitations of communication. The tentative outcome suggests that the proposed framework has high adaptive predictive compression approaches and achieves higher accuracy than existing strategies.
Analysis of the Difference in the Prevalence of Metabolic Syndrome According to Sasang Constitution and Cold and Heat Pattern Identification
Authors: Park Ki-Hyun , Kim Sang-Hyuk , Lee Siwoo , Bae Kwang-Ho
Published: January 2023

Objectives: The aim of this study was to investigate the differences in the prevalence of metabolic syndrome (MetS) according to the Sasang constitution (SC) and cold and heat pattern identification (CHPI).Methods: SC, CHPI, MetS, and component data were obtained from 2,561 participants in 26 Korean medical clinics from 2007 to 2013. SC, diagnosed by Korean medicine doctors, was confirmed by positive responses to herbal medicines administered according to that constitution. The CHPI was verified by a questionnaire about thermal sensitivity and drinking habits. The diagnosis criteria for MetS were: 1) waist circumference (WC) ≥90 cm (male) and ≥80 cm (female); 2) triglycerides ≥150 mg/dL; 3) high density lipoprotein cholesterol (HDL) <40 mg/dL (male) and <50 mg/dL (female); 4) blood pressure ≧130/85 mmHg; and 5) fasting blood glucose ≥100 mg/dL. Odds ratios (ORs) and differences in MetS and its components were compared using logistic regression and ANCOVA.Results: The MetS prevalence rates were 54.1%, 22.0%, and 33.3% for Taeeumin (TE), Soeumin (SE), and Soyangin (SY), respectively, and 30.5% and 44.5% for the cold and heat patterns, respectively. ANCOVA for MetS components showed significantly higher WC in TE than in SE or SY, and all components except HDL were higher in the heat pattern group than in the cold pattern group. Logistic regression for MetS prevalence showed a significant association between TE and the heat pattern group (OR=1.653) but not for non-TE and the cold pattern group.Conclusions: Considering SC and CHPI together may be more effective in managing MetS than considering SC alone.
An Exploratory Study of the Effect of Ongyeong-tang Administration on Insomnia Disorder in Patients with Neurological Diseases: A Retrospective Chart Review Study
Authors: Kwon Seungwon , Lee Han-Gyul , Jung Woo-Sang , Moon Sang-Kwan , Cho Ki-Ho
Published: January 2023

Objectives: The aim of this study was to retrospectively evaluate the efficacy and safety of Ongyeong-tang (OGT) in the treatment of insomnia in patients afflicted with neurological diseases, according to the medical records of one medical institution. OGT is a herbal prescription that originates from the “Synopsis of Prescriptions of the Golden Chamber” and has been used for menopausal symptoms, uterine diseases, skin diseases, insomnia, and other neuropsychiatric symptoms.Methods: Medical records of patients who visited Kyung Hee University Korean Medicine Hospital from January 1, 2021 to June 30, 2022, received outpatient or inpatient treatment, and met the inclusion criteria were used in this study.Results: Twenty-four patients satisfied the inclusion criteria and were included. The Pittsburgh Sleep Quality Index-Korean version (PSQI-K) score was used to evaluate the outcomes before and after treatment. After an average of 14.42±9.2 days of OGT extract intake, 20 patients (83.3%) experienced improvement. The remaining four (16.7%) had no change in their symptoms, but none demonstrated worsening of symptoms. The total PSQI-K score showed a statistically significant decrease from 13.08±4.54 to 10.42±4.58 (p<0.001). Sleep quality, sleep duration, sleep disturbance, use of sleeping medications, and daytime dysfunction also showed statistically significant improvements.Conclusions: Administration of OGT extract may be a relatively safe and effective therapeutic option for insomnia in patients with neurological diseases.
Clinical Effect of Injinho-tang on Hyperbilirubinemia in Hepatobiliary Disorders: A Systematic Review
Authors: Park Keunjoon , Kang Heekyung , Han Changwoo
Published: January 2023

Purpose: This systematic review was conducted to evaluate the clinical effects of Injinho-tang on hyperbilirubinemia in hepatobiliary disorders.Methods: We searched for randomized controlled clinical trials that had administered Injinho-tang as an intervention in the following medical databases: Public/Publisher MEDLINE (PubMed), Excerpta Medica dataBASE (EMBASE), Cochrane library, Research Information Sharing Service (RISS), ScienceON, Oriental Medicine Advanced Searching Integrated System (OASIS), and China National Knowledge Infrastructure (CNKI). Among the retrieved studies, only trials that met the inclusion criteria were selected, and serum total bilirubin values were extracted and analyzed from the finally selected trials.Results: The serum total bilirubin values of 1,302 patients with various hepatobiliary diseases were synthesized through a meta-analysis, which confirmed a decrease in serum total bilirubin of 21.03 µmol/L (95% CI -29.58~-12.49, p<0.01) in the group administered with Injinho-tang compared with the control group.Conclusions: Injinho-tang is effective in alleviating hyperbilirubinemia in hepatobiliary diseases when administered with conventional treatment. However, the potential risk of bias, high heterogeneity among the included trials, and differences in herbal composition are limitations of the results of this meta-analysis.
A Case Report of Reflux Esophagitis After Gastrectomy due to Gastric Ulcer
Authors: Park Do-yeon , Moon Hyang-ran , Jeon Seok Hee , Jeon Sang-yoon
Published: January 2023

Objectives: The purpose of this study was to report the effectiveness of Korean medicine in the treatment of reflux esophagitis.Methods: A 62-year-old male patient had reflux esophagitis that occurred one year after a proximal gastrectomy for gastric ulcer in 2020. The patient underwent drug treatment in 2021 and inpatient treatment in 2022 at Mokpo Hankook Hospital, but he did not improve. We treated him with Korean medical treatments, including herbal medicines (Pyungjingunbi-tang-gami), acupuncture, and moxibustion. His symptom severity was assessed with a daily visual analog scale (VAS) for heartburn, upper abdomen pain, and acid reflux.Results: After treatment, the patient's symptoms were improved. The severity of heartburn and acid reflux was reduced from VAS 7 to VAS 1, and his upper abdomen pain was improved from VAS 6 to VAS 1. The symptom frequency was also reduced.Conclusion: Korean medicine treatment could be an effective and quick treatment for reflux esophagitis.
A PERSPECTIVA SÓCIO-HISTÓRICA DA SOCIOEDUCAÇÃO NO BRASIL: conquistas e desafios atuais
Authors: Silva Paola Stéfani , Bergamim Talisson Roberto , Junior Luciano Aparecido Pereira , Beretta Regina Célia de Souza , Júnior Gilmar Antoniassi
Published: January 2023

The application of socio-educational measures in Brazil is a result of the emergence of the Statute of the Child and Adolescent (ECA). Before that, several milestones were set, however, violence and violation of rights against adolescents still occurs. The study aimed to understand the socio-historical panorama regarding the achievements and the current challenges, in the integral attention and guarantee of rights of adolescents in conflict with the law. The methodology employed in this research was based on a qualitative approach and on bibliographic and documental research in SciELO, Redalyc, and Google Scholar platforms, and in Brazilian government websites, primers, and documents, using the descriptors: socio-educational measures, adolescents, violence, and public policies. The data were analyzed from the perspective of content analysis and the theoretical and methodological framework of historical and dialectical materialism. The results obtained point to the socioeconomic issue and the lack of access to public policies experienced by adolescents, who are vulnerable and exposed to the act of crime in order to obtain goods and resources - poverty being one of the main factors. Although several changes have occurred throughout history in the attention and guarantee of rights for adolescents under socio-educational measures, several conflicts and challenges permeate the present time. Furthermore, it was possible to observe the importance of continuing academic studies on this theme, so that the socio-educational system and the entire network of comprehensive protection of adolescents' rights may be expanded and in fact perform all the necessary duties to guarantee the rights of this population.
Science communication in Germany. A practice in transition
Authors: Stewart Mhairi L.
Published: January 2023

Alongside informative discussions on Science Communication and Public Engagement, Forum Wissenschaftskommunikation 2022 reveals a field, a practice, and a community in transition. In and out of session discussions uncovered underlying tensions as well as potential synergies along a spectrum of practice between established disseminatory methodologies and participatory approaches. The future for best practice, collaboration, and growth for science communication in Germany will be a fascinating one to track.
High-temperature failure of steel boiler tube secondary superheater in a power plant
Authors: Akbar Sulthoni , Nursyifaulkhair Desrilia , Nurdiwijayanto Leanddas , Noviyanto Alfian , Rochman Nurul Taufiqu
Published: January 2023

This work investigated the failure analysis of the boiler tube secondary superheats in a power plant utility. The tube was composed of low carbon steel with 2.25Cr-1Mo addition, which was ruptured after a 26 h working test. The investigation of the tube’s failure was performed through several analysis, such as microstructure, elemental analysis, and mechanical test. It was found the abrupt increase in the operating temperature as the primary factor of the material degradation of the tube. The microstructure analysis shows the existence of elongated grain with the formation of microcracks on the grain boundaries, indicating the exceeded stress applied in the material. The hoop stress in the ruptured tube was 42.47 MPa, which is higher than the allowable stress of 23.5 MPa at 605 °C. Furthermore, the equiaxed grain was observed in the unruptured tube, implying the microstructural change after exposure at high temperatures.
The performance optimization of concrete bricks using a sagu fiber
Authors: Umar Muhammad Zakaria , Mustafa Abdul Fattaah
Published: January 2023

Sagu (sinonggi/kapurung) is a typical food of the Tolaki ethnic group. Sagu (Metroxylon sagu rottb) is an endemic plant in Southeast Sulawesi Province. So far, sagu waste in the form of fibers (sagu fiber) has not been optimally utilized. Sagu fiber waste is only left to mount; some are dumped into the river, so it is feared that it could pollute the environment. Through innovation in reducing waste in the principles of sustainable construction, sagu fiber will be used as an added material to manufacture concrete brick wall pairs. This study aimed to test the compressive strength and water absorption capacity of sagu fiber concrete bricks with variations of 0%, 50%, 60%, and 70% sagu fiber under the sand. This study uses an experimental method with stages such as preparing work tools and work materials, making test objects, and testing. Data were analyzed using mathematical formulas for the compressive strength of concrete bricks and water absorption capacity, compared with SNI 3-0349-1989 for solid concrete bricks, and analyzed comparatively. Based on the test results in this research laboratory, it is concluded that a balanced composition to get good quality is found in 70% sagu fiber and 30% sand.