bluuebunny/crossref_metadata_2025 huggingface dataset:
Factors That Influence the Occurrence of Acute Postoperative Complications after Carotid Endarterectomy
Authors: Balmos Ioan Alexandru , Muresan Mircea Gabriel , Brinzaniuc Klara , Suciu Horatiu , Horvath Emoke , Kaller Reka , Banceu Cosmin , Muresan Adrian Vasile
Published: April 2023

Background

This study aimed to identify early postoperative complications after carotid endarterectomy and the factors that may influence their occurrence.

Methods

This was an observational, analytical, prospective study conducted over a period of 3 years in 2 university hospitals in Târgu Mureș, Romania. One hundred nineteen patients who underwent carotid endarterectomy for severe carotid stenosis were included. Statistical analysis was used to identify the independent factors with a direct influence on the acute complications in the first 48 h after carotid endarterectomy.

Results

We followed up on the acute postoperative complications occurring in the first 2 days after surgery. These were represented by a limited number of neurological complications and major neck hematomas. Among all comorbidities and risk factors, only advanced coronary artery disease (p = 0.05) and smoking (p = 0.03) were independent factors that directly influenced the occurrence of major neck hematomas. Operative time exceeding the median time of 90 minutes increased the risk of neurological complications (p = 0.02). The risk of major neck hematomas was also increased by preoperative treatment with anticoagulants (p = 0.01) and anticoagulants associated with antiplatelet therapy (p = 0.009).

Conclusions

This study has identified factors such as advanced coronary artery disease, smoking, operative time, and anticoagulant therapy that may be independently associated with an increased risk of acute postoperative complications after carotid endarterectomy.
Effectivity of Extracorporeal Shock Wave Lithotripsy and Stenting vs Stenting Only for Difficult Common Biliary Duct Stones: A Retrospective Analysis
Authors: Maulahela Hasan , Rumagesan Djahalia , Abdullah Murdani , Makmun Dadang , Renaldi Kaka , Simadibrata Marcellus , Shatri Hamzah , Fauzi Achmad
Published: April 2023

Background: This study is conducted to investigate the effectiveness of extracorporeal shockwave lithotripsy (ESWL) after biliary stent placement compared to biliary stent placement alone in difficult common bile duct stones.Method: This is a retrospective cohort study using medical record data from the Gastrointestinal Endoscopy Center Registry of Dr. Cipto Mangunkusumo General National Hospital. We retrospectively evaluated 126 subjects with difficult bile stones. The subjects were divided into two groups: subjects subjected to biliary stent placement only and subjects who underwent ESWL procedure after the biliary stent placement. The effectiveness of the procedures was measured in the form of total clearance of bile stones.Results: A total of 126 subjects were included in this study, including 72 subjects who underwent ESWL procedure after biliary stent placement and 54 subjects who underwent biliary stent placement only. The effectiveness of ESWL after biliary stent placement in achieving total clearance was 69.1%, and the effectiveness of biliary stent placement in achieving total clearance was 64.8%. The ESWL procedure as adjuvant therapy after biliary stent placement did not provide a statistically significant difference (p = 0.703; 95% CI: 0.816–1.351). Normal body mass index was a factor that influences the effectiveness of ESWL after biliary stent placement (p = 0.002).Conclusion: The ESWL procedure as adjuvant therapy after biliary stent placement has the same level of effectiveness as biliary stent placement alone.
Diagnostic Challenge in Distinguishing Crohn’s Disease from Lupus Enteritis in Systemic Lupus Erythematosus Patient: A Case Report
Authors: Layadi Eka Benhardi , Pribadi Rabbinu Rangga , Ariane Anna , Kartika Emiliana , Handjari Diah Rini , Idzni Irsalina , Ichsan Oemar , Putri Megawati Ananda Hasbi
Published: April 2023

Diagnosing Crohn’s disease in systemic lupus erythematosus patients with gastrointestinal symptoms poses a great challenge, due to its rare occurrence and similarity of clinical characteristics between its differential diagnosis. We herein present a rare case of a patient diagnosed with systemic lupus erythematosus, complicated by renal involvement and conspicuous gastrointestinal manifestations. The non-specific gastrointestinal findings in this patient led to challenge in differentiating lupus enteritis from Crohn's disease, as they share many similar aspects in clinical manifestations, endoscopic findings, and histopathological findings. We herein provide the clinical judgement in reaching Crohn's disease in concurrence with systemic lupus erythematosus as the final working diagnosis through scrutinizing and comparing data from similar case studies in the past.
REGULASI DIRI ORANG TUA DALAM PENGASUHAN ANAK AUTISM SPECTRUM DISORDER DI MASA PANDEMI
Authors: Setyowati Rini Budi , Pandia Weny Savitry Sembiring
Published: April 2023

Parenting of Autism Spectrum Disorder children has great challenges especially during the covid-19 pandemic due to reduced social support, increased parental duties, and the child behavior. Parental self-regulation is important because it affects positive parenting practices, which support the optimization of children's development. This study aims to understand the description of parental self-regulation in parents of Autism Spectrum Disorder children during the covid-19 pandemic. This research is descriptive explanatory design-mixed methods, included 120 parents of children with Autism Spectrum Disorder completed the “Me as a Parent” questionnaire, measured four parental self-regulation domains: self-efficacy, personal agency, self-management and self-sufficiency. Interviews are conducted on representatives of high, moderate, and low categories of participants to obtain qualitative data.  The result shows that most of the participants have moderate category of parental self- regulation, approximately a quarter of the participants in the high category, and a small proportion in the low category. Descriptive data analysis showed that some of the participants had low parental self-regulation, which was supported by qualitative data. Based on the results, a training was designed that aims to improve parental self-regulation of parents with Autism Spectrum Disorder children, through developing domains with discussion and practice.
Histórias e memórias do ensino de Educação Física nas Escolas Normais: uma pesquisa denominada “Estado do Conhecimento”
Authors: Giacomoni Cristian , Souza José Edimar de
Published: April 2023

O estudo objetiva compreender como ocorreu o ensino de Educação Física em Escolas Normais brasileiras entre 1945 e 1964 e os panoramas das produções, das temáticas e das principais abordagens teórico-metodológicas de investigações científicas que tratam do período. Foram consultados os anos de 2014 a 2019 nos bancos de dados da BDTD, da Capes e as principais associações da área da educação. A metodologia foi abalizada em Gil e dividida em 3 etapas de leitura: exploratória, seletiva e interpretativa. Os indícios apontam que o ensino de Educação Física era delimitado pelas ginásticas ‒ por suas características biológicas e científicas -, que usavam movimentos suaves, predominantes ao longo da década de 1940. Contudo, os esportes ganham maior espaço nas aulas ao longo dos anos 1950.
METHODOLOGICAL PRINCIPLES OF ASSESSING THE LEVEL OF REGIONAL ECONOMIC SYSTEMS’ DIGITALIZATION
Authors:   Chernihiv Polytechnic National University, Popelo Olha , Samoilovych Anastasiia ,   Chernihiv Polytechnic National University
Published: April 2023

The article is devoted to the theoretical and methodological aspects of assessing the level of digitalization of regional economic systems. The main directions, principles and patterns of digitaliza-tion of regional economic systems are outlined. The main areas of digital development of the regions are defined as: implementation of innovative technologies in the management system of urban devel-opment based on the concept of a smart city; increasing the institutional capacity in the regions re-garding the implementation of digital development projects; development of IT infrastructure; creation of digital platforms and industry solutions; open data and others.The existing methods of assessing the level of digitization are analyzed. A methodology for assessing the level of digitalization of regional economic systems is proposed.
THE ACTUAL DEVELOPMENT TRENDS OF INDIRECT TAXATION’ SYSTEM IN UKRAINE
Authors:   State Tax University, Shvabii Kostiantyn , Chyrva Olexsandr ,   State Tax University
Published: April 2023

The article examines the latest trends in the development of the indirect taxation system in Ukraine. This is due to the fact that in the last few years there have been certain structural shifts in the system of indirect taxation and changes in tax legislation as a reaction to external negative shocks (the COVID-19 pandemic and full-scale military aggression against Ukraine). In view of this, the purpose of this work is to assess the latesttrends in the development of the indirect taxation system in Ukraine, taking into account the impact on the state budget revenues and the state finance system as a whole of such factors as the COVID-19 pandemic and the full-scale military aggression of the Russian Federation in Ukraine, which allows to determine the strong and weaknesses of the domestic indirect taxation system.The conducted study testifies to the significant impact of external negative shocks on the structure of tax revenues from the payment of indirect taxes. Revenue volumes have decreased significantly, despite the fact that it is indirect taxes that act as fiscal stabilizers for the public finance system. In particular, there was a trend of increasing structural disparities both in theindirect taxation system and the tax system in general.It is shown that some tax innovations related to the full-scale military aggression against Ukraine are appropriate and allowed to stabilize the situation in the economy and society. Meanwhile the results of the analysis of most of the tax reforms during martial law indicate their excessive liberalization. Some of the considered changes did not bring the desired regulatory effect, but instead created threats to the fiscal security of the state and prerequisites for abuse by non-compliant taxpayers.It was concluded that it is necessary to further increase the efficiency of the functioning of the indirect taxation system of Ukraine by improving the electronic VAT administration system and implementing the Track&Trace system for the excise tax payment control system.
PROBLEMS OF THE LENDING MARKET OF UKRAINE UNDER THE CONDITIONS OF MARITAL STATE
Authors:   Lviv Polytechnic National University, Lapishko Mariіa , Vynnyk Anna ,   Lviv Polytechnic National University
Published: April 2023

Before the start of russia's large-scale invasion the demand for loans in Ukraine was caused by: the improvement of the macroeconomic situation in the country, a decrease in interest rates and gov-ernment programs to support entrepreneurship and mortgage lending. The insolvency of debtors dur-ing the war led to an increase in the volume of overdue loans and, as a result, a deterioration in the quality of banks' loan portfolios.The article systematizes the problems of the lending market that arose due to the military ac-tions in Ukraine, determines the priority of the introduction of anti-crisis measures to satisfy both the interests of creditors and borrowers.We have identified a number of factors that have worsened the quality of banks' loan portfolios and the creditworthiness of borrowers who have issued loans in recent years. In the article were stud-ied the reasons for the increase in the cost of new loans and the decrease in demand for them. Measures of the loan market regulator to ease requirements for banks in the credit risk management system have been systematized. The content and priority of the introduction of anti-crisis measures to settle the interests of lenders and borrowers were determined, state programs and grants to support business lending for the recovery of Ukraine were analyzed.Іt was concluded that the banking system of Ukraine has enough liquid funds for lending, but the lending market is experiencing the painful consequences of the state of war: high risks associated with the war increased theprice of credit funds; the quality of banks' loan portfolios deteriorated due to the low solvency of borrowers, credit risk reduced the profitability of banking activities; the demand for new loans fell sharply due to the shutdown of certain businesses, disruption of logistics, migration of employees of business structures; part of the collateral for bank loans (including mortgages) has been destroyed and it is still not solved what the mechanism of compensation for losses should be for banks.
GOVERNMENT REGULATION OF THE CREDIT MARKET IN TERMS OF THE MARTIAL LAW IN UKRAINE
Authors:   Chernihiv Polytechnic National University, Sadchykova Iryna , Sadchykov Victor ,   Chernihiv Polytechnic National University
Published: April 2023

In the conditions of martial law, the ability of legal entities and individual to pay their credit obligations significantly worsens the situation in the credit market of Ukraine. The overall indicator of the share of overdue loans shows a sharp increase. The majority of banks and other financial and credit institutions of various forms of ownership arefaced with problems of non-return of a large share of assets, and are forced to form reserves in a short period of time, which directly affects stabil-ity and their position in the credit market. That is why government regulation of the credit market in the conditions of martial law is extremely relevant today.The purpose of this study is to determine the essence of government regulation of the credit market under martial law, identify the main factors, problems and prospects for the development of credit relations between market participants and attract additional resources to restore transparency in the reflection of their financial status.In the course of the study, the basics of government regulation of the credit market in the condi-tions of martial law are considered. The introduced changes of the regulator are considered from the position of various participants in the credit services market. The conditions for safe functioning of the credit market and its participants are highlighted. The main aspects of the regulator in the credit mar-ket in the form of the NBU and its role in the legislative framework for regulating the participants of the credit market in the conditions of martial law are revealed. The role of the international credit in the post-war economic recovery is determined, and the role of international organizations and part-ners in supporting the credit market of Ukraine is generalized, as well as the description and devel-opment of the main plans for its resuscitation in the post-war periodare submitted. A retrospective analysis of international programs for the development of credit markets of the countries participating in military conflicts and a study of their historical development, as well as the integration of this experience in modern conditions in Ukraine, is carried out.
THE ROLE OF SOCIAL ENTREPRENEURSHIP IN TODAY'S CONDITIONS OF UKRAINE
Authors:   Chernihiv Polytechnic National University, Ivanovа Nataliia , Koval Kristina ,   Chernihiv Polytechnic National University, Koval Vladyslav ,   Chernihiv Polytechnic National University
Published: April 2023

Attention is focused on the effectiveness of social entrepreneurship in solving economic and so-cial problems based on the differences between social entrepreneurship and traditional business -the social effect is a direct result of the activity of a social enterprise as opposed to a by-product of activi-ty that can be included during the implementation of other types of entrepreneurial activity. It was de-termined that social entrepreneurship is an active entrepreneurial activity, a full-fledged business that solves social problems and creates stable social value, and the conditions for classifying business enti-ties as social enterprises were analyzed.The criteria on the basis of which entrepreneurship is defined as social are outlined -pro-nounced entrepreneurial activity, clear definition of goals, directing profit to achieve defined goals, social impact, innovations and systemic changes -and factors influencing the distribution of the profit of such an enterprise.The state of development of social entrepreneurship in Poland is analyzed and examples of the successful functioning of various types of social enterprises are given in order to solve the urgent problems currently facing Ukraine -the need to adapt internally displaced persons; employment of people with special needs; an increase in the number of people who need social services; employment of the population with the use and further development of available resources; disruption of the coun-try's energy system.The composition of social enterprises of Ukraine was analyzed according to the following criteria: type of social enterprise, region of activity, organizational form of activity, distribution of enterprise profit.The main obstacles to the development of social entrepreneurship are identified -confusion re-garding the definition of the concept of "social entrepreneurship", ambiguity in the understanding of the role of social enterprises, reluctance to start and carry out economic activities among non-profit organizations, poor economic condition of social enterprises, etc. –and positive aspects of activity in the field of social entrepreneurship -the presence of support from European funds for the activity of social enterprises; growing attention to the activities of social enterprises as an effective tool for solving urgent social and economic problems.
Strategy to increase E-Customer Loyalty Through E-Customer Satisfaction in E-Commerce Business in Indonesia
Authors: Sopyan Ahmad , Febrian Wenny Desty , Sani Indra , Muratin Muratin , Sari Ade Risna , Sarinastiti Nia , Firdiana Ade , Purwoko Harryi
Published: April 2023

The purpose of this study was to measure the degree of electronic customer's electronic satisfaction and loyalty to online sales and shopping services in Indonesia. The study is classified as a research study using descriptive analysis methods, taking samples from the population and using questionnaires as the primary tool for data collection. The population in this study is all Indonesian online shopping consumers. Respondents were selected using probability sampling and systematic random sampling. The survey sample used consisted of 156 respondents. The survey sample was randomly selected for the first data, but specific intervals are used for the second data. The results of the analysis using the structural equation modeling (SEM) model are as follows; (1) The E-Marketing mix has a large positive effect on e-customer satisfaction. (2) E-Service quality (E SERVQUAL) has a significant positive impact on e-customer satisfaction; (3) E-Brand trust has a significant positive impact on e-customer satisfaction. (4) E-customer satisfaction has a significant positive impact on E-customer retention. This study will help online selling business stakeholders identify the factors that can affect e-customer loyalty.
Electrochemical Formation of C-S Bonds from CO2 and Small Molecule Sulfur Species
Authors: Li Junnan , Al-Mahayni Hasan , Chartrand Daniel , Seifitokaldani Ali , Kornienko Nikolay
Published: April 2023

The formation of C-S bonds is an important step in the synthesis of pharmaceutical, biological, and chemical products. A very attractive green route to C-S bond containing species would be one driven through electrocatalysis using abundant small molecule precursors but examples within this context are largely absent from the literature. To this end, this work demonstrates the use of CO2 and SO32- as cheap building blocks that couple on the surface Cu-based heterogeneous catalysts to form hydroxymethanesulfonate, sulfoacetate and methane sulfonate for the first time, with Faradaic efficiencies of up to 9.5%. A combination of operando measurements and computational modelling reveal that *CHOH formed on metallic Cu is a key electrophilic intermediate that is nucleophilically attacked by SO32- in the principal C-S bond forming step. In all, the proof-of-concept for electrocatalytic C-S bond formation and mechanistic insights gained stand to substantially broaden the scope of the emerging field of electrosynthesis.
Quantitative image analysis of microplastics in bottled water using Artificial Intelligence
Authors: Vitali Clementina , Peters Ruud J. B. , Janssen Hans-Gerd , Undas Anna K. , Munniks Sandra , Ruggeri Francesco Simone , Nielen Michel W. F.
Published: April 2023

The ubiquitous occurrence of microplastics (MPs) in the environment and the use of plastics in packaging materials result in the presence of MPs in the food chain and the exposure of consumers. Yet, no fully validated analytical method is available for microplastic (MP) quantification, thereby preventing the reliable estimation of the level of exposure and, ultimately, the assessment of the food safety risks associated with MP contamination. In this study, a novel approach is presented that exploits interactive artificial intelligence tools to enable the automation of MP analysis. An integrated method for the analysis of MPs in bottled water based on Nile Red staining and fluorescent microscopy was developed and validated, featuring a partial interrogation of the filter and a fully automated image processing workflow based on a Random Forest classifier, thereby boosting the analysis speed. The image analysis provided particle count, size and size distribution of the MPs. From these data, a rough estimation of the mass of the individual MPs, and consequently of the MP mass concentration in the sample, could be obtained as well. Critical materials, method performance characteristics, and final applicability were studied in detail. The method showed to be highly sensitive in sizing MPs down to 10 µm, with a particle count limit of detection and quantification of 28 and 85 items/500 mL, respectively. Linearity of mass concentration determined between 10 ppb and 1.5 ppm showed a regression coefficient of (R2) of 0.99. Method precision was demonstrated by repeatability of 9 - 16% RSD (n = 7) and within-laboratory reproducibility of 15 - 27 % RSD (n = 21). Accuracy based on recovery was 92 ± 15 % and 98 ± 23 % at a level of 0.1 and 1.0 ppm, respectively. The quantitative performance characteristics thus obtained complied with regulatory requirements. Finally, the method was successfully applied to the analysis of twenty commercial samples of bottled water, with and without gas and flavor additives, yielding results ranging from values below the limit of detection to 7237 (95% CI [6456, 8088]) items/500 mL.
De Novo Design of Molecules Towards Biased Properties via a Deep Generative Framework and Iterative Transfer Learning
Authors: Sattari Kianoosh , Li Dawei , Xie Yunchao , Isayev Olexandr , Lin Jian
Published: April 2023

De Novo design of molecules with targeted properties represents a new frontier in molecule development. Despite enormous progress, two main challenges remain, i.e., (i) generation of novel molecules with targeted and quantifiable properties; (ii) generated molecules having property values beyond the range in the training dataset. To tackle these challenges, we propose a novel reinforced regressional and conditional generative adversarial network (RRCGAN) to generate chemically valid, small molecules with targeted heat capacity (Cv) values as a proof-of-concept study. As validated by DFT, ~80% of the generated samples have a relative error (RE) of < 20% of the targeted Cv values. To bias the generation of molecules with the Cv values beyond the range of the original training molecules, transfer learning was applied to iteratively retrain the RRCGAN model. After only two iterations of transfer learning, the mean Cv of the generated molecules increases to 44.0 cal/(mol·K) from the mean value of 31.6 cal/(mol·K) shown in the initial training dataset. This demonstrated computation methodology paves a new avenue to discovering small molecules with biased properties.
Synthesizable materials discovery via interpretable, physics-informed machine learning models
Authors: Fujii Susumu , Shimizu Yuta , Hyodo Junji , Kuwabara Akihide , Yamazaki Yoshihiro
Published: April 2023

The critical roles of computations and machine learning in accelerating materials discovery have become increasingly recognized, particularly in predicting and interpreting the synthesizability and functionality of new materials. Here, we develop a synthesizable materials discovery scheme using interpretable, physics-informed models. Our approach is based on an integration of high-throughput computations that capture the essence of materials properties, including the impact of point defects, and explainable machine learning models. These models provide quantitative predictions and interpretations of the materials’ synthesizability and functionality based on structural and chemical descriptors in a vast compositional space. Applying this scheme to proton-conducting cubic inorganic electrolytes for fuel cells, two unconventional materials for proton-conducting electrolytes, Pb-doped Bi12SiO20 and Sr-doped Bi4Ge3O12, were discovered in the first two synthesis trials. This scheme effectively bridges the existing gap between computational predictions, human interpretations, and experimental feasibility in machine learning, offering new insights into materials discovery and accelerating the development of new functional materials.
N-heteroacenes as an organic gain medium for room temperature masers
Authors: Attwood Max , Xu Xiaotian , Newns Michael , Meng Zhu , Ingle Rebecca , Wu Hao , Chen Xi , Xu Weidong , Ng Wern , Abiola Temitope , Stavros Vasilos , Oxborrow Mark
Published: April 2023

The development of future quantum devices such as the maser, i.e., the microwave analog the laser, could be well-served by exploration of chemically tuneable organic materials. Current iterations of room temperature organic solid-state masers are composed of an inert host material that is doped with a spin-active molecule. In this work, we have systematically modulated the structure of three nitrogen-substituted tetracene derivatives to augment their photoexcited spin dynamics and then evaluated their potential as novel maser gain media. To facilitate these investigations, we adopted an organic glass former, 1,3,5-tri(1-naphthyl)benzene (1-TNB) to act a universal host. These chemical modifications impacted the rates of intersystem crossing, triplet spin polarisation, triplet decay and spin-lattice relaxation, leading to significant consequences on the conditions required to surpass the maser threshold.
Rapid Access to Free Phenols by Photocatalytic Acceptorless Dehydrogenation of Cyclohexanones at Room Temperature
Authors: Shu Wei , Min Lin , Lin Jia-Ni
Published: April 2023

Phenols are ubiquitous substructures in natural products and bioactive compounds. However, practical methods for the direct construction of phenols under mild conditions remains challenging. Herein, a photocatalytic acceptorless dehydrogenative aromatization of cyclohexanones or cyclohexenones at room temperature has been developed. The reaction features the visible-light and cobalt co-catalyzed sequential dehydrogenation of in-situ formed enol silyl ethers, which are regarded as a challenging process. This operationally simple method enables a series of phenols with diverse substitution patterns from cyclohexanones or cyclohexenones, providing a general and straightforward method for the synthesis of phenols from simple starting materials under mild conditions.
Análisis del régimen de la patria potestad: ¿Pertinencia de su regulación exclusiva por el Código de los Niños y Adolescentes?
Authors: Cornejo Fava María Teresa
Published: April 2023

No presenta resumen
El contrato de seguro de caución
Authors: Velez Salinas Roberto
Published: April 2023

No presenta resumen
Defensa del consumidor. ¡Oiga!... ¿Y mi vuelto?
Authors: Torres-Morales Carlos
Published: April 2023

No presenta resumen
La Comisión Interamericana de Derechos Humanos: Admisibilidad y jurisprudencia relevantes
Authors: Díaz Romero Pedro E.
Published: April 2023

No presenta resumen
La confianza: un análisis de la célula del derecho eficiente
Authors: Gago Prialé Horacio
Published: April 2023

No presenta resumen
Reglas sobre notificaciones y plazos en el proceso arbitral
Authors: Hundskopf Exebio Oswaldo
Published: April 2023

No presenta resumen
Antimicrobial Efficacy of Acacia nilotica Against Microorganisms of Oral Cavity- An In Vitro Study
Authors: S Byakod Abhilasha , K Bhat Padma
Published: April 2023

Background One of the frequent dental problems is the lack of self-rejuvenation capability of cartilage tissue. Acacia nilotica commonly known as babul thorny acacia Egyptian acacia or thorn mimosa has been proven in medicinal uses. The current study was carried out to evaluate the antimicrobial efficacy and phytochemical analysis of Acacia nilotica on microorganisms of oral cavity.Methods The flower extract of Acacia nilotica was prepared using Soxhlet apparatus. The antimicrobial testing S. mutans and L. acidophilus was done using agar well diffusion method. 0.2 chlorhexidine was used as a positive control. Minimum Inhibitory Concentration MIC was estimated using micro dilution assay and Minimum Bactericidal Concentration MBC was estimated using Colony Forming Unit CFU method. SPSS version 20 was used for statistical analysis.Results Phytochemical screening of flower extract of Acacia nilotica demonstrated the presence of alkaloids flavonoids glycosides tannins terpenoids steroids. The antimicrobial activity of the flower extract of Acacia nilotica showed varying degree of activity against the bacterial isolates. The flower extract showed relatively larger zones of inhibition 21 mm19 mm at 40 mgmL against S. mutans and L. acidophilus when compared with chlorhexidine. The MIC OD at 600 nm showed maximum inhibition at 40 mgmL against S. mutans and L. acidophilus which was about 78 and 91 respectively. The MBC value was the lowest concentration that showed no apparent growth on agar plate. Comparison between the groups against L. acidophilus was statistically significant than S. mutans.Conclusion The present study highlights the antimicrobial efficacy of Acacia nilotica extracts which could be considered in the preparation of indigenous herbal mouth rinse or toothpaste as the formulation inhibited all the micro-organisms tested in this study at low concentrations.
Autogenous Bony Halo for Ridge Augmentation and Simultaneous Implant Placement
Authors: Mercy Lobo Reena , MLV Prabhuji , Shamsuddeen Suhana
Published: April 2023

Tooth extraction often leads to alterations in the dimensions of the ridges. Hence it may be necessary to perform augmentation procedures before dental implants are placed. Various surgical procedures and materials have been introduced that enhance the soft tissue support and structural base of bone required by implants. Alveolar bone augmentation methods include guided bone regeneration onlay grafting interposition grafting distraction osteogenesis ridge splitting and socket preservation. The bone ring technique is another onestage procedure that is carried out to treat vertical alveolar ridge abnormalities. In this technique the dental implant and a block graft which can either be an autogenous graft or an allogenic cortico-cancellous graft are placed simultaneously. This case report describes the application of the bone ring approach for augmentation of the implant site along with the simultaneous placement of the dental implant. This is an easy procedure for obtaining ring-shaped donor bone for the three-dimensional 3D reconstruction of bone deformities.
Assessment of Adherence to Clinical Protocols and Interface with Antimicrobial Stewardship Program
Authors: Macedo Cibele Caspari de , Carneiro Marcelo , Krummenauer Eliane Carlosso , Menezes Rochele Mosmann
Published: April 2023

Introduction: Antimicrobial resistance is a global concern. Antimicrobial Stewardship Program interventions are necessary to guide the implementation of treatment protocols for major infectious syndromes. Aim: To evaluate the adherence rate to clinical protocols related to the prescription of antimicrobials in a teaching hospital in Rio Grande do Sul. Outlining: Retrospective cross-sectional study, conducted with secondary data from antimicrobial prescriptions of patients hospitalized in clinical units from July to December 2020. Results: 4028 antimicrobial prescriptions were evaluated, with 42.9% non-adherence to institutional clinical protocols, 39.3% with complete adherence and 17.8% with partial adherence. Implications: Knowing the adherence data to clinical protocols provides an opportunity to intervene in improvements in antimicrobial prescribing, verifying the need for permanent education for prescribers, medical students, and residents. This contributes to the promotion of rational use of antimicrobials and helps in the fight against antimicrobial resistance.
Review of Antennas for Railway Communications
Authors: Arya Ashwini K. , Han Soyul , Kim Sanghoek
Published: April 2023

This paper presents a review of the state-of-the-art antennas for the railway communications. There are various aspects that one should consider when designing an antenna, such as antenna size and directivity. While size constraints on railway antennas are not as critical as for mobile consumer counterparts, a radome structure is required to cover the antenna to minimize the aerodynamic resistance antenna. This paper reviews aerodynamic simulations to account for the drag coefficient of the antenna. In a low-frequency band (<5 GHz), railway antennas used to be omnidirectional in the horizontal plane. As the communication scheme advances toward 5G technology, high directivity is required for the railway antenna to compensate for the high path loss at high-frequency bands, i.e., 28-GHz band. We review recent studies of railway antennas over various frequency bands, such as LTE-R, LTE, and the lower and upper 5G bands. To accommodate multiple frequency bands with a single antenna, along with the aerodynamic radome cover, design techniques allowing multiple frequency bands are reviewed in this paper.
Design of 39-GHz Up- and Down-Conversion Mixers for 5G mmWave TDD Applications
Authors: Wang YiYang , Duan Haipeng , He Long , Wu Xu , Wang Dongming , Li Lianming
Published: April 2023

This article presents fully integrated 39-GHz bidirectional up- and down-conversion mixers for 5G millimeter-wave (mmWave) applications. Fabricated in a 65-nm CMOS process with a 1.2-V supply voltage, the up- and down-conversion mixers consume 39 and 43 mW, respectively. For 5G time-division duplexing (TDD) operation, intermediate-frequency (IF)/local-oscillator (LO)/radio-frequency (RF) T/R switches are introduced. For better isolation and low insertion loss between the up- and down-conversion mixer, a series-shunt single-pole double-throw (SPDT) structure and an equivalent lumped λ/4 transmission line are proposed for IF and RF T/R switches, respectively. To realize compact area and wide bandwidth, a transformer-based matching network is adopted in this design. Targeting multi-channel phased array applications, the measurement result shows that the up-conversion mixer achieves a 2.5-dB peak conversion gain with 6.5 GHz 3-dB bandwidth. Including the insertion loss of the switch and IF signal routing, at the maximum gain of 36.5 GHz, the up-conversion mixer achieves an output 1-dB gain compression point (OP1dB) of 2.5 dBm. Furthermore, the down-conversion mixer achieves a 5-dB peak conversion gain with a 9.7-GHz 3-dB bandwidth.
Inverse Design of Terahertz Optical Power Splitters Using the Particle Swarm Optimization Method
Authors: Goudarzi Kiyanoush , Lee Han-eol , Kim Doyoung , Park Ikmo , Han Haewook
Published: April 2023

This letter proposes 50:50 TE terahertz power splitters based on digitized metamaterials. The components are optimized using the particle swarm optimization algorithm. The digitized metamaterials are formed as a silicon slab with circular air holes atop a silicon dioxide substrate. The insertion losses of optimized structures containing air holes with a radius of 9 μm and air holes with different radii (9 μm and 7 μm) are less than 3.9 dB and 3.65 dB, respectively, over a frequency range of 0.87–1.09 THz. The footprint of the proposed devices is 400 μm × 350 μm. The devices have excellent characteristics, such as compactness, efficiency, all-dielectric properties, and compatibility with CMOS fabrication technologies, and can become vital components of most terahertz-wave routing circuits.
Design of a Wideband Balun Using IPD Technology for Compensating the Frequency Dependency
Authors: Jang Youna , Jeong Kwanhun , Lee Yea-Ji , Kang Taehoon , Lee Sangmin , Koo Seo , Ahn Dal
Published: April 2023

In this paper, we propose a wideband balun using integrated passive device (IPD) technology. The proposed circuit is designed to compensate for the magnitude deviations by differentiating the magnitude S-parameter and calculating the lumped component value when the derivative value is zero. For a smaller size, the proposed circuit is implemented using IPD technology, and the fabricated circuit’s size is 2.4 mm × 1.02 mm. The magnitude of the measurement results has 3.5 ± 0.3 dB deviations from 2.8–4.58 GHz, and the phase difference has 180° ± 10° from 2.8–5 GHz at the center frequency of 3.6 GHz. Therefore, the measurement results show that the theory of the proposed circuit is well matched compared with the measurement results for smaller sizes, wideband magnitude, and phase characteristics.
A Novel Design of Permanent Magnet Linear Synchronous Motor with Reduced End Effect
Authors: Wu Qingle , Wang Liqun , Yang Guolai , Tang Enling , Li Lei , Al-Zahrani Ahmed
Published: April 2023

In response to the end effect of the permanent magnet linear synchronous motor, this paper proposes an improved modular motor structure. To compute its electromagnetic characteristics, a subdomain model that converts the Cartesian coordinate system into a polar coordinate system through coordinate transformation is further formulated, thus significantly reducing programming difficulty. The analytical results are compared with those of the finite element method and indicate that the subdomain model can accurately consider the effects of end and flux barriers. Moreover, the magnetic field distribution inside the motor is applied to explain the end force abatement, and the suggested flux barrier width is obtained. Finally, the modular structure is applied to a 9-slot, 10-pole permanent magnet linear synchronous motor. The simulation results show that the modular structure can effectively suppress the end effect of the linear motor, and the proposed subdomain model applies to the design of the modular motor.
Experiments of Sub-THz Wave Folded Waveguide Traveling-Wave Tube Amplifier
Authors: Jang Kwang-Ho , Kim Jong-Hyun , Kim Geun-Ju , Kim Jung-Il , Choi Jin-Joo
Published: April 2023

This study showed the possibility of using a sub-terahertz (THz) traveling-wave tube (TWT) via measuring the transmission characteristics and TWT performance of the circuit by applying X-ray LIGA, a micro-fabrication process, to the interaction circuit. The applied circuit type, an E-bend folded waveguide, is a simple structure most suitable for lithography. A total of three applied frequencies were used the W-band, G-band, and 850 GHz. Among the manufactured circuits, the W-band circuit was applied to the TWT, one of the vacuum electronics devices (VEDs). This was done to prove the manufacturing accuracy of the circuit by comparing the nonlinear characteristics of the circuit with the prediction results. Through such testing, the small signal gain was measured as 13 ± 2 dB under the conditions of 13.96-kV and 24.2-mA electron beam energy. The frequency bandwidth was extremely wide, about 9 GHz, and showed similar characteristics to the simulation predictions. The maximum output of the device was obtained up to 1 W or more at 87.12 GHz by slightly increasing the beam current. These characteristic achievements showed the suitability of the TWT for very small circuits fabricated using the X-ray LIGA process, further suggesting the applicability of other sub-THz bands.
FEATURES OF COPING STRATEGIES FOR OVERCOMING CONFLICTS IN INTER-ETHNIC FAMILIES (ON THE EXAMPLE OF SLAVIC-TURKISH FAMILIES)
Authors:   Russian State University for the Humanities, Mazurova Nadezhda V. , Kuman Roman E. ,   Russian State University for the Humanities
Published: April 2023

The article considers features of modern interethnic families, the role of cultural and religious factors in intra-family communication on the example of Slavic-Turkish families. The concepts of “family conflict” and “family coping strategies” are analyzed. The results of a comparative study of the relationship between coping strategies and interaction in conflicts in inter-ethnic and mono-ethnic families are presented. An empirical study of coping strategies for overcoming family conflicts in interethnic families was conducted by a sample of 60 people. The sample is divided into two groups: 30 people who are in a mono-national Slavic marriage (age from 23 to 42 years, married experience from 1 to 8 years), and 30 people who are in an interethnic Slavic-Turkish marriage (age from 21 to 46 years, married experience from 2 to 9 years). The authors suggest that there are differences in the use of coping strategies during family conflicts in families of different ethnic composition. People who are in an inter-ethnic marriage will demonstrate a high level of conflict in family life compared to spouses who are in a mono-ethnic marriage.
RELATIONSHIPS BETWEEN THE DEPENDENCE ON SOCIAL NETWORKS AND PERSONALITY TRAITS OF HEXACO AND THE DARK TRIAD
Authors:   Psychological Institute of Russian Academy of Education, Baskaeva Oksana V.
Published: April 2023

The study examined associations of the personality traits with dependence on social media. The sample included students (N = 84) in the humanities aged 19 to 23 (M = 19.85; SD = 0.799). Among them, 89% are women (N = 75) and 11% are men (N = 9). The study was conducted online. Respondents were asked to fill out three questionnaires: the HEXACO-PI-R Questionnaire and the Dark Triad Short Questionnaire, adapted for the Russian population, and the Social Network Dependence Questionnaire. The results of the study allow drawing some conclusions about the differences and similarities between social media dependence and personality traits in Russia and abroad: in the Russian student sample, we did not find significant relationships between social media dependence and psychopathy, as reported by foreign sources; data on the relationship of Internet – addiction with consciousness are similar to foreign ones. According to the results of the study, dependence on social networks is widespread among Russian students in the humanities and has a negative relationship with the indicators of personality traits honesty / modesty, indifference to luxury, unpretentiousness, consciousness and organization of the HEXACO-PI-R Questionnaire and positive – with the total indicator of the Dark Triad.
FEATURES OF EXPERIENCING PSYCHOLOGICAL WELL-BEING BY WOMEN OF DIFFERENT AGES
Authors:   Russian State University for the Humanities, Gavrichenko Oksana V. , Semenova Daria A. ,   Russian State University for the Humanities
Published: April 2023

The article considers aspects of women’s psychological well-being in the period of young and middle adulthood, as well as the personal characteristics of women of those age groups. The paper analyzes differences in the experience of subjective psychological well-being, level of self-attitude and the value orientations among the representatives of both groups and studies the correlations between psychological well-being and the above-mentioned personal characteristics: self-attitude and the value orientations - in groups of women of young and middle adulthood. The results demonstrate that women in the age of young adulthood have a significantly higher level of subjective psychological wellbeing, in contrast to older women. Women at the age of middle adulthood turned out to be more closed, they also have a stronger desire to preserve their qualities and see themselves unchanged. At the same time, the study showed that in both groups, closeness as an element of self-attitude is one of the factors that determine subjective psychological well-being. Moreover, in course of the study, it was revealed that the links between psychological well-being and value orientations are found only in the group of women of middle adulthood, while in the group of women in the age of early adulthood, no such links were found
PSYCHOLOGICAL ASPECTS OF THE SUBJECTIVE FEELING OF LONELINESS IN ADOLESCENTS AND YOUNG MEN
Authors:   Russian State University for the Humanities, Mishina Marina M. , Vorob’eva Kseniya A. ,   Russian State University for the Humanities
Published: April 2023

The article considers the personal characteristics of adolescents and young men experiencing loneliness. It analyzes the psychological qualities that accompany the process of loneliness: attachment, impulsivity, emotional instability and anxiety. Adolescents are characterized by a higher level of experiencing a sense of loneliness, as compared to young men, which suggests the presence of age-specific features in the manifestation of such psychological phenomenon. Those adolescents are diagnosed with the following indicators: a high level of introversion, a manifestation of attachment, a reduced level of self-control, emotional instability, as well as manifestations of situational anxiety. The results of the study of the subjective feeling of loneliness in adolescents and young men made it possible to develop and implement a correctional psychological and pedagogical program “Productive communication unites and develops personality” and on its basis to give practical recommendations for preventive, consulting and correctional work, as well as to increase the level of competence of parents and teachers in understanding the genesis of the phenomenon of loneliness in adolescents and young men. The introduction of a psychological and pedagogical program allows not only to eliminate the feeling of loneliness in adolescents, but also makes it possible to solve complex age-related issues of experiencing many emotional states of a developing personality