bluuebunny/crossref_metadata_2025 huggingface dataset:
The Effect of Profitability, Solvency, and Liquidity on Audit Report Lag in the Period before and During the Covid 19 Pandemic
Authors:   Department of Accounting, STIE Indonesia Banking School, Indonesia, Idawati Wiwi , Prabowo Hayu S. ,   Department of Accounting, STIE Indonesia Banking School, Indonesia, Rachmadi Dimas Ikhsan ,   Department of Accounting, STIE Indonesia Banking School, Indonesia
Published: May 2023

This study tries to ascertain whether the Covid 19 epidemic has an impact on audit report lag and whether profitability is proxied by ROA, liquidity is proxied by current assets, solvency is proxied by debt to equity ratio. Manufacturing firms in the pharmaceutical subsector that were listed on the IDX in 2016–2021 were used in this study. This study employed multiple linear regression techniques and descriptive statistics to evaluate the hypothesis. The study’s findings demonstrate that the Covid 19 epidemic, liquidity, and solvency all have an impact on audit report latency. Profitability, however, has no impact on the delay in an audit report.
Da possibilidade de penhora da verba salarial do devedor para o adimplemento de honorários advocatícios
Authors: Da Silva Vinicius Augusto , Cordeiro Marlon , Ribas Reginaldo , De Souza Michael Dionísio
Published: May 2023

O presente artigo proporciona um estudo acerca da possibilidade de penhora da remuneração do devedor para o pagamento de honorários advocatícios, uma vez que à luz da legislação alienígena, existe tal precedente. Os honorários do advogado são verbas de natureza remuneratória e alimentar, isto é, remuneração advinda dos trabalhos exercidos por esse profissional, por meio da qual provêm seu sustento e subsistência. Por sua vez, o Código Processual Civil de 2015 estabeleceu como exceção à regra da impenhorabilidade, o pagamento da prestação alimentícia, bem como a remuneração que ultrapassa o valor de cinquenta salários mínimos. Em contraponto, apesar de a execução estabelecer o princípio do menor sacrifício possível, denota-se que existe um desbalanço causado pela impenhorabilidade entre o interesse do credor e do devedor, afastando o direito da prestação jurisdicional afetiva. Diante disso, será analisado adiante que, a penhora do salário do devedor deve ser parcial, buscando se estabelecer um juízo de proporcionalidade e ponderação, de maneira que resguarde o executado e, em paralelo, permita a satisfação do quantum exequendo.
A relevância do critério trinômio nos casos de pensão alimentícia entre pais e filhos
Authors: Rodrigues Manuela Fernandes Brumund , Cordeiro Marlon , Ribas Reginaldo , De Oliveira Ariane Fernades
Published: May 2023

Quando do estabelecimento de uma pensão alimentícia, em um olhar mais superficial, a necessidade do alimentado parece ser o único elemento a ser analisado, pois a prestação tem o condão de permitir que este tenha um bom desenvolvimento, uma vida digna e que não se veja compelido a alterar sua condição social pela ausência do auxílio (alimentos). Contudo, um estado democrático de direito é construído pelo equilíbrio, pela ponderação, pela análise mais completa quanto seja possível sobre as temáticas enfrentadas. A legislação brasileira garante que sejam observados requisitos relativos ao alimentante, qual seja sua possibilidade e ao alimentado, a sua necessidade. Porém, tais requisitos, se analisados sob uma ótica puramente objetiva, poderá conduzir a uma obrigação desigual, para um ou para outro lado. É aí que a proporcionalidade se apresenta como elemento importante para que a pensão alimentícia seja o mais adequada e não sobrecarregue a obrigação para nenhuma das partes, ao passo assim que a relação existente da obrigação de prestar alimentos seja mais assertiva e atinja seus objetivos mais nobres, como o auxílio no desenvolvimento do alimentado, quando menores, garantia de qualificação para enfrentar a vida adulta, quando filho maior de idade, e que o pai ou mãe enquanto alimentante, atenda os ditames legais de prestar toda a assistência necessária aos seus filhos.
AFFECTS DETERMİNATİON OF THE NATURAL FACTORS SUCH AS CLİMATE, SOİL, VEGETATİON AND GEOMORFOLOGY ON LANDUSE/COVER BY HELPİNG GEOGRAPHY İNFORMATİON SYSTEM (GİS) İN THE KESİS STREAM BASİN (SOUTH OF TURKİYE)
Authors: KARAOSMANOGLU Fatih , SINDIR Rıfkı , DOGAN Tülin
Published: May 2023

There is a close interaction between any natural environment and especially human beings and other living things. This interaction; It controls landforms, climate, soil and vegetation. Climate is the most important external force that shapes the earth. For these reasons, human beings; It maintains its life in the natural environment by adapting to the landforms and climate. The behavior of human beings to adapt to nature has emerged as land use. In this study; Landforms, climate, soil and vegetation that are effective on land use in Kesis Stream Basin were examined. In the study, geographic information systems (GIS) were chosen as the method, and the elevation model, other data obtained from the institutions constitute the study materials. These data were processed through GIS and explained visually and numerically.Accordingly, it has been determined that the rugged landforms of the basin do not allow settlement and agricultural activities since they correspond to approximately 80% of the area (Table 3). In the basin, brownish forest soils and red Mediterranean soils developed, in which Mediterranean climate characteristics are observed. On these soil surfaces; conifer, mixed and broad-leaved plant species showed a wide distribution. While alluvial and colluvial soils developed on landforms such as polje, uvala, and sinks in the basin, it was determined that these surfaces were used as settlement and agricultural areas. As a result, it was determined that more than 70% of the area (Table 6) limited settlement and agriculture in the Kesis Stream basin, as a natural result of the mutual interaction of landforms, climate, soil and plant characteristics. Apart from these, it has been determined that about 17% of them, such as the accumulation fan, polje, uvala, doline, low plateau, are engaged in settlement and agriculture. Here; the rules of natural factors should be prioritized and land use plans should be made to adapt to this.
Influencing factors of maximum retraction of maxillary central incisor and its clinical significance in orthodontic treatment
Authors: Yunxin Chen , weidong Kong
Published: May 2023

The position of the maxillary central incisor (MCI) directly affects the appearance of the patient's profile. For patients with bimaxillary protrusion or maxillary protrusion, orthodontic treatment often adopts a large number of retractions of the maxillary anterior teeth to improve the profile. However, the retraction of MCI is limited, and the maximum retraction depends on the distance between the root of MCI and the incisor canal(IC). This distance is not a constant value and is affected by many factors. This article reviews the influencing factors of the maximum retraction of MCI and its clinical significance in orthodontic treatment.
STUDY OF STEM LEARNING APPROACH WITH PJBL MODEL IN HONING CREATIVE THINKING SKILLS
Authors: Budiarti Retni S , Johari Asni , Rusdi Muhammad , Anggereini Evita
Published: May 2023

STEM (Science, Technology, Engineering, and Mathematics) is an interdisciplinary approach that studies academic concepts related to the real world. The principles of Science, Technology, Engineering and Mathematics are essential for connecting schools, communities, work and the global world. These principles can be implemented into a project-based learning model (PjBL) in the form of measurable learning steps. The PjBl model is believed to be able to develop students' thinking skills, develop students' creativity, and encourage students to work together in teams. The purpose of writing this article is to describe and provide an overview of several things related to STEMas an approach that can integrate knowledge, technology, techniques and mathematics as well as the implementation design of the STEM learning approach with the PjBL model to improve students' mathematical creative thinking in learning mathematics. In this study, the author uses the type/approach of research in the form of library research. The results of the study show that the STEM approach with the PjBL model students can be trained to create learning based on problems of everyday life so that they can train students in applying the knowledge learned in school with phenomena that occur in the real world. The PjBL model is also able to provide early research experience through project work concepts that are built on the products produced.
Improving service delivery in the South African Public Sector
Authors: Dlamini Dumisani , Zeleke Worku Professor , Mammo Muchie Professor
Published: May 2023

The South African public sector has been performing poorly on service delivery, threatening the nation’s social and economic well-being. This article aims to answer the question of how the South African public sector can improve service delivery performance.
COVID-19: WHAT ARE THE JOURNALIST'S STRATEGIES IN COVERING THE NEWS
Authors: Herman Achmad , Marisa Aulia Ananda
Published: May 2023

This study aims to determine the journalist coverage strategy of Palu City during the Covid-19 by using journalist and journalistic theory, news theory, and the concept of coverage guidelines issued by press organizations. This research method is descriptive and qualitative with an action research approach. The data collection techniques were observation and interviews with four journalists from Palu City. The informants selected through the purposive sampling technique are informants who had been exposed to Coronavirus, have coverage of Covid-19, and have a minimum service period of five years. The study results show that the coverage strategy is divided into three stages. In the first stage, there are two strategies: online research and editorial meetings. In the second stage, the strategies are the technology utilization in communication applications form, the close relationship between journalists and fellow journalists and resources, and utilizing citizen journalism. In the last stage, the strategy generally applies technology because there are no significant obstacles. Of these three stages, there are five coverage strategies, and the most dominant strategy applied during the Covid-19 pandemic is the use of WhatsApp and Zoom Meeting. Furthermore, straight news dominates the Covid-19 news writing model because the rules limit the interview duration.
THE INFLUENCE OF FETAL STIMULATION EDUCATION ON THE KNOWLEDGE AND ATTITUDE OF HEALTH CADRES
Authors: Mulyanti Yuli , Deswani  , Luthfiyah Sari
Published: May 2023

Stimulation during prenatal is a good sign for healthy fetal development. The more a pregnant woman stimulates or stimulates the baby's auditory nerves in the womb, the more neural pathways to the brain will develop and become stronger so that when the child is born, they will be better prepared for the world outside the womb. Health cadres are volunteers who are close to the community, it is hoped that with increased knowledge about fetal stimulation they can provide assistance to pregnant women, especially providing education about fetal stimulation. The purpose of this study was to determine the effect of mentoring health cadres on fetal stimulation in pregnant women on knowledge and attitudes. The research method uses a quasi experiment with a control group design. The sample is health cadre, with a sampling strategy using purposive sampling with a sample size of 56 people. The location used is the Cipayung Health Center area, East Jakarta. There is a significant difference in knowledge in the intervention group and control group before and after the intervention Kader mentoring model on Fetal Stimulation in Pregnant Women (p value = 0.001) and Attitude (p value = 0.000)
Competent and uncomplicated PID control algorithm design expressions for controlling second order systems
Authors: S. Soliman Mohamed
Published: May 2023

Proportional-integral-derivative (PID) control algorithm with its various forms, namely P (proportional), PI (proportional-integral), PD (proportional-derivative), PID, and compensators, is considered the most applied and widely used control algorithms in industry; this is because of its simple construction, robustness and capabilities to achieve desired control over plant performance. Designing PID algorithm is accomplished with a compromise to result in an overall system responds with acceptable levels of stability, response fastness, smoothness and costs. Various PID design methodologies and expressions have been introduced in text and literature,each has its advantages, disadvantages and limitations. In the present work, a new, efficient, simple, easy to apply and linear expressions for PID algorithmP-. PI, PD, and PID modes design are derived and presented. Expressions are derived based on relating parameters of both controller and plant. The expressions are intended to control the behavior of second order systems and approximated as such systems, such that it responds with acceptable stability level, minimum possible overshoot, oscillations and steady state error. To further improve the resulted response, only one tuning parameter α, is introduced To test, analyze, and evaluate the design expressions, MATLAB/Simulink software was used. A simulation model was built by integrating the next sub-models; PID control algorithm modes, drive with limitation and saturation blocks, sensor, desired output signal generator and finally various forms of second order systems. The simulation model was developed and refined to be as close as possible to real life conditions and processing. Studying the recorded testing, graphical and numerical results show that the suggested expressions are being simple and easy to apply, and also efficient in providing better control over controlled system’s behavior in terms of response measures and performance indices.Moreover, expressions are efficient to speed up response and eliminate or reduce overshoot, rise time and settling time. Studying results show that, the overall system responds with acceptable fast response, in most cases without overshoot, oscillation and with minimum steady state error and better ISE and IAE indices values.
A review of decision-making for pre floods resilience in housing
Authors: Anthony  , Peter  , Abdul Majid Roshida Binti , Binti Tukiman Nor Izura
Published: May 2023

Most people inhabiting or owning houses in flood-prone areas do not have a prior idea of the situation of the site. The type of flood determines the causes and effects of flooding. It is, therefore, necessary to understand the causes and consequences of flooding in our sites. Both the developer and homeowners after having an in-depth idea of the situation and especially the impact of a particular flood will from the onset decide on whether to go on with the intended idea of development or seek an alternative area. The decision of choices would be taken based on the flood's known effects, causes and professional evaluation. The purpose of this study was to look into the five types of floods alongside their features, and decisions to be taken after evaluation. The scope of the study was to assess the condition of sites regarding floods and a subsequent decision arrived before starting any construction. Data was gathered using the review approach: Books and articles. The knowledge acquired would be relevant in the decision of the end-users or developer to either start construction or abandon the site. In situations where the choice is to start development, further education would be needed on resilience to the specific flood type found in the location. The impact of the study reveals that an estimated cost, time, emotional worries, and resilience techniques would be disclosed before the start of any construction for early decision. However, if the disadvantage of starting the project outweighs the advantages, the best decision is to avoid the site and not start the work
PRE-CRASH FACTORS ASSOCIATED WITH NATURE AND OUTCOME OF INJURIES FROM ROAD TRAFFIC ACCIDENTS IN MAKUENI COUNTY, KENYA
Authors: Mathulu  , A.W.  , Some  , E.S  , Ndonga  , E  , M
Published: May 2023

Injuries constitute one of the priority health problems in the world that lead to the loss of several million lives and cause nonfatal injuries to millions of people globally.The objective of the study was to determine the precrash factors associated with the nature and outcomes of injuries in traffic accidents in Makueni County. This would provide evidence for the development of policies and programmes in emergency medical services. The Mixed method approach and cross-sectional study design was employed. Data was collected from 427 First Responders and 474 patients. Universal sampling was employed for all the consecutive First Responders who assisted people inflicted with Injuries conveyed to six hospitals in Makueni. Quantitative data analysis was through Statistical Package for Social Scientists version 25 while qualitative data was through descriptive and analytical reports. Study findings indicate a significant relationship between Outcomes of injuries with use of personal protective device, education level of casualties, location of health facility, time the accident occurred andthe weather during the accident. The study recommends regular community members’ sensitization and training on pre-hospital emergency care for road traffic related casualties. Sensitization should prioritize issues such as use of personal protective equipment to reduce morbidity and mortality with emphasis to the most affected such as the males.
The Effect of Online Game Addiction on Violent Behavior in High School Students
Authors: Nurhalimah  , Salsabila Belva Putri , Haryati Omi , Wartonah  , Banon Endang
Published: May 2023

Addictive behavior online games the point where teenagers become dependent and lose control. Habits play game online in adolescents lead to changes in character such to become aggressive. Aggressive behavior not only in physical but also take of aggression anger and hostility can hurt people. This study to determine relationship between addictive behavior online games with aggressive behavior of High School students. Type research quantitative cross sectional approach. Population all students of class X-XI of SMAN at Tambun Utara. Sample using total sampling. Instrument used instrument by Chen and Chang (2008) for level online game addiction and the Buss-Perry Aggression Questionnaire Scale (BPAQ) for level aggressive behavior. Analysis data used descriptive statistical and chi-square. The results, it is known characteristics respondents are dominated by boy (63.1%) coming from class XI (64.1%) and 17 years old (47.6%), the type of online game most often played is Mobile Legend (62.1%) with playing duration for 3 hours (62.1%), high online game addiction (52.4%), and high aggressive behavior (57.3%). And results chi square test obtained that p-value of p= 0.001 with = 0.05 (p-value <α ), can be concluded that there is a significant relationship between game addiction and aggressive behavior in students.
Evaluation of the UV absorbance of sum skin lighting creams
Authors: Saad Magdi Hassan
Published: May 2023

The results of studies conducted on some skin-lightening creams in the Saudi market indicated that they contain heavy metals in varying proportions that exceed the limits recommended by the World Health Organization, which may cause danger to human health. The study focused on three types of skin-lightening creams, namely Fair & Lovely, Rose, and Diana, to estimate their absorption percentages. In general, the results showed that the relationship between the absorbance rate of skin lightening creams and the wavelength is an inverse relationship, where the absorbance rate decreases with the increase in wavelength. For samples treated with ferment only for skin-lightening creams, the cream with the highest absorption value was Fair & Lovely cream, and the lowest absorption value was Rose cream. In addition, for untreated cream samples, Rose cream had the highest absorption, while Fair & Lovely cream recorded the lowest absorption value. In addition, the samples of creams to which olive oil was added only, without exposure to any other factors, had almost the same absorbance value. Moreover, the samples of creams that were exposed to sunlight varied in their absorbance values, as Rose cream recorded the highest absorption value and Fair & Lovely cream had the lowest absorption value. In the samples of creams that were exposed to X-rays, the results showed that the Diana cream sample and the Rose cream sample had the same pattern and behavior in absorbance.UV spectroscopy (Genesys 10S UV-Vis spectrophotometer) was used.
Ivóvízben adagolt tilvalozin hatékonyságának vizsgálata Mycoplasma hyopneumoniae okozta légzőszervi betegség kezelésére hízósertésekben
Authors: Filipsz István , Albert Ervin , Biksi Imre , Földi Dorottya , Gyuranecz Miklós , György Zsolt , Földi József
Published: May 2023

A szerzők hízósertéseken, nagyüzemi körülmények között vizsgálták 10 mg/ttkg, ivóvízben, 5 napon át adagolt tilvalozin (TVN) hatékonyságát Mycoplasma hyopneumoniae okozta légzőszervi betegség gyógy- és metafilaktikus kezelésére. A gyógyulási arány 91,7% volt a TVN, 86,7% a referens kontrollcsoportban, ami szignifikáns egyenértékűséget jelent. Az új megbetegedés aránya szignifikánsan kisebb volt (0,9% szemben a 4,5%-kal), valamint a légzőszervi tünetek enyhébb formában jelentek meg a TVN (átlag pontszám: 0,09, ill. 0,26), mint a kezeletlen kontrollcsoportban. Az eredmények alátámasztják a tilvalozin hatékonyságát a sertések Mycoplasma-pneumoniájának gyógy- és metafilaktikus kezelésére
Design Tools Trash Automatic Using microcontroller Arduino
Authors: Alharis Alharis Ramadhani , Karnadi
Published: May 2023

Waste is a waste which can not be used again, which could in solid, liquid or gas form. If we hear that a litter box can make the surrounding environment uncomfortable because it causes a foul odor and can also be a source of diseases such as itching, diarrhea, flu, dengue, bacteria and others. This can provide problems where the author can take the initiative to conduct research to be able to design and build a garbage box tool that works automatically by using an ultrasonic sensor HC-SR04 as a detector of an object that is in front of him using a distance of 10 cm which can be adjusted according to the command so that that distance will be able to open the trash box if it exceeds the distance of 10 cm then the sensor will not work, to open the trash box using a micro servo given 10 seconds to open the trash box if it is more than the specified time then the trash box will work to close the trash box where the dfplayer and speakers work to issue sounds that will be determined according to commands such as saying thank you for throwing trash in its place for the control system using an Arduino microcontroller to run a program. the set to work properly. The purpose of building the garbage box tool is so that the community is protected from bacteria that exist on the surface of the garbage box that can cause disease and increase the community to always take care of the surrounding environment.
Userinterface analysis on the website of pt. Rifan financindo palembang futures using the usability scale system method
Authors: Nova Nova Skorvio Nasari , Apriansyah
Published: May 2023

Website of PT. Rifan Financindo Berjangka has a home link, Profile (History, Products, Client Registration, Brokerage Representatives, Legality, Investment Procedures, Education, Info and activities, Market Updates, Announcements, Contacts, and Location). Service quality in disseminating information on the website of PT. Rifan Financindo Berjangka has become a very important need for the community, because it has an impact on public satisfaction with the performance of information service managers on the PT. Rifan Financindo Futures. In the end, the improvement in service quality is an indicator of the success of PT. Rifan Financindo Berjangka in improving the services provided to the public as well as being a publication media for the PT. Rifan Financindo Berjangka.
Identification of image object based on machine learning using tensorflow
Authors: Wempy Wempy Virgana , Apriansyah
Published: May 2023

Image identification is one of the machine learning / artificial intelligence methods that can be used to detect an image quickly. This is one of the technological breakthroughs in science, especially in the field of computers. Object detection and recognition provides a new challenge on how to make machines detect objects automatically. Creating a machine learning model that has the function to determine the position and identify many objects in an image is still a major challenge in computer vision. Currently, many computing resources and intelligent algorithms can do this, but this feature can only be obtained by configuring a special machine to detect objects.
Barbershop trend information system
Authors: M naufal reza Opal , Dedi Haryanto
Published: May 2023

This research has a purpose to determine the performance and customers expectations about the service quality of Real7 Barbershop which expected by customers after receiving services from Real7 Barbershop and what should be improved in the services provided by Real7 Barbershop. The samples are taken using simple random sampling method. Simple random sampling is a sampling design in which every single element in the population has a known and equal probability to be selected as a subject. Data analysis are in this research using Analysis of Importance Performance. The results of this research prove that the level of customer expectations of service quality in Real7 Barbershop Yogyakarta is 3.78, where the value is in the condition of customers have high expectations of service quality in Real7 Barbershop Yogyakarta. While, the level of customer performance service quality in Real7 Barbershop Yogyakarta is 4.15, where the value is in good condition of the customer service quality at Real7 Barbershop Yogyakarta. From the servqual analysis results all items are in a positive gap so that customers are satisfied with the quality of services provided by Real7 Barbershop. Conclusively, the five-dimensional servqual value is positive, which indicated that, the overall quality of the service provided by the firm (Real7 Barbershop) meets customer expectations. Factors that must be modified are in quadrant 1, which is the comfort level of the waiting room and the level of cleanliness.
Midnight school 3d game design
Authors: Nurhaliza Nabilla , Apriansyah
Published: May 2023

The game that is a favorite among gamers is the FPS type game ( First Game).Person Shooter ) and the horror genre. This research designs game genre horror and FPS type which is a very interesting combination for developed. The author will develop this game using Blender software as an in- game terrain creation, programming language C# and uses Unity 3D 5.3 as its engine. The features of this game are:mysteries/riddles, hints, and jumpscares where players will be surprised with sound, moving objects and so on. Device design method The software used is the Extreme Programming (XP) Development Method. which has the following stages: Planning, Design, Coding and Testing. The results of the research are in the form of a game called Midnight School with see First Person Shooter Horror 3D setting. Ease of Rating the game can be concluded based on the opinion of the respondents as a whole ie this game is very easy to play.
WEB-BASED TEACHER AND STUDENT DATA INFORMATION SYSTEM OF SDN 19 SUMBER MARGA TELANG
Authors: Asse Ambo , Haryanto Dedi
Published: May 2023

With reference to the background of the problem above, the formulation of the problem to be discussed is formulated, namely "How is the student data management information system at SDN 19 Sumber marga telang?". The method used in this research is a quantitative research method with a descriptive approach. Quantitative research method is one type of research whose specifications are systematic, well-planned and clearly structured from the beginning to the making of the research design. Based on the results of the Blackbox test, it can be concluded that the purpose of this research has been achieved and designed an information system for managing data for SDN Sumber marga telang students computerized using the PHP programming language and using the Mysql database which can make it easier for staff to manage data and obtain the required information. quality and can assist in the decision-making process
Web-Based Design Of Admission Information System In Sma Negeri 1 Tulung Selapan
Authors: Imthihan Muhammad hafis imthihan anjasman , Karnadi
Published: May 2023

SMK N 1 Tulung Selapan is one of the senior high schools in the Tulung Selapan area which is engaged in education. From year to year prospective new students always increase. For now, the selection process for new admissions is still using the manual system by registering directly to the school. In today's increasingly developing era, the registration process can actually be done without having to come directly to school, so that it can make it easier for parents or prospective students to register new students more quickly and effectively. Based on this, an online registration information system was designed for web-based new student admissions.
In Vitro Analysis of Hydrophilic and Conventional sealants - A comparative study
Authors: K Mathusudhanan , K Mahalakshmi
Published: May 2023

Background: According to the World Health Organization, filling up the pits and fissures is one of the most efficient, least invasive ways to completely protect the occlusal surface from the carious phenomena. In vitro tests are essential for quickly delivering the knowledge required about the effectiveness of more recent sealant brands. Consequently, the objective of the current study was to assess and contrast the viscosity and length of resin tags on permanent molars of conventional and hydrophilic sealants.
Materials and Methods: Twenty extracted third molars were split into two groups at random, one receiving conventional sealant (Clinpro 3M ESPE), and the other receiving hydrophilic sealant (UltraSeal XT Hydro). Each tooth's occlusal surfaces underwent an acid etchant pretreatment before the appropriate sealants were applied. Afterwards thermocycling and longitudinal sectioning were applied to both groups. For the purpose of measuring the length of the resin tag, the sectioned tooth specimens were examined under a scanning electron microscope. An Anton Paar viscometer was used to measure viscosities. The difference between the mean resin tag length of Group I and Group II sealants was compared using an independent t-test.
Results: The mean resin tag length of Group II (10.07+/- 1.01m) was found to be higher than Group I (7.49+/- 0.94m), and this difference was statistically significant (P = 0.001). The viscosity measurements of Groups I and II were determined to be 0.8 mega Pascal (MPa) and 0.6 MPa, respectively.
Conclusion: Based on the findings of the current investigation, it can be said that Group II sealants generated resin tags of sufficient length and had lower viscosities than Group I sealants. Thus, a hydrophilic sealant outperformed a conventional sealant in terms of performance.
Infrared Spectroscopy of Polymers XII: Polyaramids and Slip Agents
Authors: Smith Brian C.
Published: May 2023

After introducing organic nitrogen polymers in the last column, we continue this theme by studying an important family of polymers—polyaramids. In this column, we examine the spectra of polyaramids, which are polyamides that contain an aromatic ring in their chain. Included in this family is Kevlar, which is an important polymer many are familiar with. We also examine the spectra of “slip agents,” which are small molecule amides used to lubricate injection molds and are oftentimes found as contaminants in polymer products.
Terahertz Spectral Investigation of L-Cysteine Hydrochloride and its Monohydrate
Authors: Zhang Xun , Yang Bin , Zhu Zhenqi , Bian Yujing , Zeng Ruonan , Zhou Wenlong
Published: May 2023

Although terahertz waves are susceptible to water of crystallization (bound water), we found that the terahertz absorption spectra of cysteine hydrochloride (LCH) and its monohydrate (LCHM) are highly similar. To explain this particular phenomenon, density functional theory (DFT) and the independent gradient model (IGM) were used to obtain the vibration mode and intermolecular interaction of LCH and LCHM. The molecular polarities of LCH and LCHM were then obtained by calculating their molecular polarity index (MPI). The characteristic peak positions in the terahertz spectra of LCH and LCHM basically corresponded, with the superimposed interference of vibration modes and the van der Waals interaction between molecules concealing the expression of hydrogen bonds produced by bound water in the LCHM terahertz spectrum. In addition, the intensity of the characteristic peaks in the LCHM terahertz spectrum was higher because of its higher molecular polarity. In general, the analysis method combining THz-TDS and MPI provides a new theoretical reference for studying the relationship between biomolecules and water.
THE INTERNAL BALLISTICS OF WEAPON MODEL USING PRINCIPLE OF HIGH-LOW PRESSURE CHAMBERS AND MORTAR
Authors:   Le Quy Don Technical University, Nguyen Thai Dung
Published: May 2023

This paper presents an improved method to build the model and solve the problem of internal ballistics of a weapon model on the basis of combining the operation principle of high-low pressure chambers and mortar. The obtained results by using numerical methods showed that the Ptmax value in the proposed model increase by 1.5 times compared to the previous model. The difference in muzzle velocity of two models is approximately 11.74 m/s. These differences allow to increase the range of projectiles and ensure the rationality of weapon structure.
DETERMINATION OF THE FRICTION COEFFICIENT BETWEEN THE BOLT CARRIER AND RECEIVER ASSEMBLY IN THE AMPHIBIOUS RIFLE
Authors:   Le Quy Don Technical University, Nguyen Van Hung
Published: May 2023

The article deals with determination of the friction coefficient between the bolt carrier and receiver assembly in the amphibious rifle by experimental method when firing in air and under water. The results indicate that firing environment hugely affects the friction. The friction coefficient is 0.4922 and 0.290 when firing in air and underwater respectively. The result of this research can be applied to dynamic analysis of automatic mechanism and design the amphibious rifle.
VIBRATION OF LAUNCHER ON MULTIPLE LAUNCH ROCKET SYSTEM BM-21 WITH THE CHANGE OF ROCKET’S MASS CENTER WHEN FIRED
Authors:   Le Quy Don Technical University, Nguyen Thanh Hai
Published: May 2023

In this paper, an equation describing the change of rocket mass center due to ejecting burned fuel gases from the rocket engine is established. This equation can be used for developing a system of differential equations describing the vibration of a launcher based on the theory of rigid multibody system. Calculation results are used for examination of the influence of change in the rocket center on the vibration of BM-21 combat vehicle launcher when firing. The contents presented in this paper can be served as a basis for comprehensive computation of the launcher vibration when firing, and further to improve the effectiveness of combat vehicles systems of Vietnam People’s Army.
GENERALIZED GROUP DETECTION FOR MASSIVE MIMO SYSTEMS
Authors: Nguyen Thanh Binh
Published: May 2023

In this paper, we propose a Generalized Group Detection (GGDex) algorithm for signal recovery in Massive MIMO systems. The algorithm is built by dividing the extended Massive MIMO system into several sub-systems, which then can be detected by any classical detectors in a successive-interference-cancellation manner. Based on the GGDex, we further propose 4 efficient detectors called the ZF-GGDex and SQRD-GGDex, the ZF-Presorted GGDex and the SQRD-Presorted GGDex ones. The analytical and simulation results show that all proposed detectors can achieve more than 3dB in BER performance compared to those of the conventional linear ones while their complexities are kept at reasonable levels. Particularly, performances of the ZF-Presorted GGDex and the SQRD-Presorted GGDex approach tightly those of the BLAST. Consequently, they are very good candidates to use in Massive MIMO systems.
ESTIMATION OF THE LIMITED LOAD FOR WHEELED AMPHIBIOUS VEHICLES IN THE TRANSITION PERIOD
Authors:   Le Quy Don Technical University, Dang Dinh Vu
Published: May 2023

The paper provides a method for building a dynamic model and investigates a motion of the amphibious vehicle in the transition period. The research is conducted from the time that vehicle starts come into contact with the water environment until the wheels of front axle separated from the ramp angle (slope), in conditions of the ramp angle of less than 15 degrees and the vehicle’s velocity of not more than 20 km/h. The result allows to determine the maximum distance moving on the ramp angle that vehicle can perform to ensure not submerged conditions, then the limited load can be determined.
INVESTIGATING THE STRESS-STRAIN STATE OF FGM CYLINDRICAL SHELLS BASED ON THE QUASI-3D HIGHER-ORDER SHEAR DEFORMATION THEORY
Authors:   Le Quy Don Technical University, Tran Ngoc Doan
Published: May 2023

This paper presents the theoretical basic to study FGM cylindrical shells by using the quasi-3D higher-order shear deformation theory. The displacement field accounts for a cubic variation of the inplane displacements and a quadratic variation of the transverse displacement through the thickness. The material volume distribution of the shell is given in a form of a power function of thickness. The mathematical model and the computational program are validated through a comparison with previous results. Based on the mathematical model and the computational program, the paper presents the effect of several parameters, including the thickness and the coefficient of material distribution on the stress-strain state of a shell subjected to external load.
RESEARCH AND SYNTHESIS OF GUIDANCE LAW OF INERTIAL PHASE FOR MEDIUM RANGE AIR TO AIR MISSILE
Authors:   Le Quy Don Technical University, Nguyen Sy Hieu
Published: May 2023

The paper presents a method of optimal guidance law synthesis for medium range air-to-air missile using information from the inertial system (inertial phase). During this phase, missile is brought to the predicted interception point. Requirement at the end of inertial phase: Distance and rotation angle speed of line of sight missile-target to ensure favorable for open homing head. Quality of guidance law is evaluated according to three parameters: Response overload, rotation angle speed of line of sight, and instant sliding. At the end of inertial phase, simulation results for three parameters of new guidance law are smaller (quality of guidance law is better) than that of proportional navigation law.
The method of direct determination of manganese in fresh parsley leaves and roots using capillary electrophoresis method.
Authors: Grodner Błażej , Jelińska Małgorzata
Published: May 2023

This is the first work presenting a simple, rapid and sensitive method using capillary electrophoresis (CE) for the direct determination of manganese (II) in fresh  parsley leaves and roots.  The developed method has been optimized and validated. Optimum separation of Mn2+, by measuring at 214 nm, was obtained on a 30 cm × 75 μm capillary using a 50 mM phosphate running buffer (pH 3.0), capillary temperature 25°C, voltage 10 kV, and hydrodynamic injection. Good results were obtained for different aspects including stability of the solutions, linearity, and precision. Detection and quantification limits for Mn2+ were reached at the level of 0.97 and 2.94 μg/mL respectively. The sample preparation procedure is very simple and not time consuming. This method has been successfully used to the measuring concentration of Mn2+ in order to determine the content of this ion in parsley leaves and roots. The speed of obtaining the result of the analysis was only 3 minutes.
Cytokine-targeted treatment in alopecia areata - new possibilities?
Authors: Stępień Maciej , Anczyk Stanisław
Published: May 2023

Alopecia areata is a form of non-scarring hair loss characterised by a recurrent and difficult-to-treat course. The aetiology of this disease is still incompletely understood. However, multiple immunological pathways and an abnormal cytokine profile in patients with alopecia areata have been described. There are many therapeutic options for patients with alopecia areata, including topical, intralesional or systemic corticosteroids, contact immunotherapy, phototherapy and non-corticosteroid immunosuppressive drugs such as cyclosporine, methotrexate or azathioprine. However, these treatments have limited efficacy and may be associated with side effects. In addition, Janus kinase inhibitors have been shown to cause metabolic disorders. Therefore, their use in patients with alopecia areata may be limited. Other cytokine-targeted therapies have been shown to be effective in alopecia areata, such as apremilast (a phosphodiesterase 4 inhibitor), ustekinumab (a human immunoglobulin (Ig) G1 kappa monoclonal antibody directed against interleukin 12 and 23), abatacept (a soluble fusion protein which links the extracellular domain of human cytotoxic T-lymphocyte-associated antigen 4 to the modified Fc portion of human immunoglobulin G1), secukinumab (an IL-17A antagonist) and dupilumab (a monoclonal antibody that blocks interleukin 4 and interleukin 13). TNF inhibitors (such as infliximab, adalimumab and etanercept) have been described to be ineffective in alopecia areata. In addition, disease exacerbation after TNF therapy has been reported. Alefacept (an immunosuppressive dimeric fusion protein that consists of the extracellular CD2-binding part of human leukocyte function antigen-3 fused to the Fc part of human IgG1) and efalizumab (anti-CD11a monoclonal antibody) have not shown efficacy in alopecia areata. There are also isolated reports of alopecia areata after therapy with omalizumab (recombinant humanised monoclonal antibody anti-IgE), ixekizumab (inhibitor of IL-17A) and brodalumab (inhibitor of IL-17R).
Educational implications: faith, social and moral in Surat Yassin (An analytical study)
Authors:   Learning Path Manager|| Al amal humanitarian|| organization Istanbul|| turkey E: amerkhatab82@gmail.com || phone: 00905378997746, Mohamed khattab Amer
Published: May 2023

ABSTRACT: The study aimed to devise the educational, social and ethical contents that Surat Yassin guides, and the researcher used the analytical and deductive approach. By referring to the sources from Hadith and Tafsir, and the reasons for the descent, such as the two Sahihs and their commentaries, the interpretation of Ibn Katheer, al-Baghawi, al-Baidawi and Abi al-Saud, and access to contemporary interpretations of Surat Yassin such as Tahrir and Enlightenment by Ibn Ashour, The study came in the introduction and two topics, between the researcher in the introduction; the research problem, its goals, limitations and methodology, and the first topic dealt with the definition of Surat Yassin and its status and topics, as the second topic dealt with the educational contents in Surat Yassin. The results showed the surah's affirmation of the contents of faith and the most important of them (looking at the creation of God Almighty, and contemplating the verses indicating his existence and the greatness of his making, and looking at the creation of man and the stages of his growth), followed by emphasizing the social contents and the most important (social solidarity and guarding against sedition and protecting society from atheism), And finally, the implications are ethical and the most important (kindness and advocacy to God with wisdom and good advice, and keenness to guide people), In the conclusion, the researcher presented a set of recommendations and proposals, the most important of which are: the need to pay attention to the educational implications of the legal texts, the importance of the educational interpretation of the Holy Quran, and the need to formulate rules and principles for the science of educational analysis of the legal texts. ملخص الدراسة: هدفت الدراسة إلى استنباط المضامين التربوية والاجتماعية والأخلاقيةالتي ترشد إليها سورة يس، واستخدم الباحث المنهج التحليلي والمنهج الاستنباطي؛ بالرجوع إلى المصادر من كتب الحديث والتفسير وأسباب النزول كالصحيحين وشروحهما، وتفسير ابن كثير، والبغوي، والبيضاوي وأبي السعود، والاطلاع على التفاسير المعاصرة لسورة يس كالتحرير والتنوير لابن عاشور، وقد جاءت الدراسة في مقدمة ومبحثين، بين الباحث في المقدمة؛ مشكلة البحث وأهدافه وحدوده ومنهجه، وتناول المبحث الأول التعريف بسورة يس ومكانتها ومواضيعها، كما تناول المبحث الثاني المضامين التربوية في سورة يس، وأظهرت النتائج تأكيد السورة لمضامين إيمانية وأهمها (النظر في خلق الله عز وجل، والتأمل في الآيات الدالة على وجوده وعظيم صنعه، والنظر في خلق الإنسان وأطوار نموه)، يليها التأكيد لمضامين اجتماعية وأهمها (التكافل الاجتماعي والحذر من الفتنة وحماية المجتمع من الإلحاد)، وأخيراً لمضامين أخلاقية وأهمها (التلطف والدعوة إلى الله بالحكمة والموعظة الحسنة، والحرص على هداية الناس)، وفي الخاتمة قدم الباحث جملة من التوصيات والمقترحات من أهمها؛ ضرورة الاهتمام بالمضامين التربوية للنصوص الشرعية، وأهمية التفسير التربوي للقرآن الكريم، وضرورة صياغة قواعد وأصول لعلم التحليل التربوي للنصوص الشرعية.