bluuebunny/crossref_metadata_2025 huggingface dataset:
The Influence of Slow Deep Breathing Technique on Inpatient Anxiety
Authors: Nusa Harta I Putu Arika , Kamaryati Ni Putu , Putra I Nyoman Arya Maha , Wicaksana IGA Tresna
Published: August 2023

Previous studies have shown that slow deep breathing techniques provide benefits in reducing anxiety in general, but there has been no specific review investigating its benefits in inpatient populations. Objective: To provide strong and up-to-date evidence on the effectiveness of slow deep breathing technique as a potential intervention in reducing anxiety in the inpatient population. Methods: This study is a literature review conducted during April-May 2023 using Google Scholar, PubMed, and ScienceDirect. The keywords used were "nafas dalam", "kecemasan", "rawat inap" in Indonesian, and "slow deep breathing," "anxiety," "inpatient care" in English. Results: The literature review identified eight articles that examined the anxiety of patients undergoing surgery and treatment in hospitals in Indonesia. These articles highlighted internal and external factors influencing anxiety. The dominant research approach employed experimental designs with pre-test and post-test measurements involving more than ten respondents. The study found that internal factors influencing anxiety included age, gender, education, health condition, and prior hospitalization experiences, while external factors included access to information, therapeutic communication, environment, and healthcare facilities. Conclusion: The implementation of slow deep breathing techniques is a major factor in reducing anxiety in inpatient populations. Further research is expected to emphasize the use of slow deep breathing techniques as a primary intervention in reducing anxiety levels in patients prior to undergoing surgery.
The Effect of Expressive Writing Therapy in Reducing Anxiety Levels in Adolescent Bullying Victims
Authors: Syah Afni Yan
Published: August 2023

Introduction: Bullying is a social phenomenon that often occurs in society, especially in adolescents. There are many biological, psychological, and social changes that can cause conflict problems between themselves and the surrounding environment, causing bullying victims which have an impact on the emergence of anxiety in these adolescents. The purpose of this study was to determine the effectiveness of expressive writing therapy in reducing the level of anxiety among adolescent victims of bullying. Method: The research method used quasi-experimental research with pretest and posttest control group design approaches. The sampling technique with a total sampling of 44 respondents divided into 2, namely the experimental group and the control group. Results: the results of the study using the Paired Sample T-test showed that the value of p = 0.000 (p <0.05) which means that there is an effect of expressive writing therapy in reducing anxiety levels in adolescent victims of bullying. This can be seen from the decrease in anxiety scores in adolescent victims of bullying from a severe anxiety level of 50.0% to 41.0% in mild anxiety after expressive writing therapy intervention. Conclusion: Therefore, it is suggested that expressive writing therapy can be used as an intervention in overcoming anxiety in adolescent victims of bullying both on campus and at home.
Determinants of Nurse Performance in Implementation of Infection Prevention and Control Using Employee Engagement Theory in Pandemic Period: A Literature Review
Authors: Dewi Putu Sundari , Suyasa I Gede Putu Darma , Darmini AAA Yuliati , Wulandari Sarah K.
Published: August 2023

Nurse performance is an important parameter in improving the quality of health services. Nurse performance is influenced by several factors such as individual factors, psychological and organizational factors. The need for support for nurse performance can also be increased through an employee engagement approach. This study aims to identify the determinants factors of nurse performance in implementing infection prevention and control using the theory of employee engagement during a pandemic. This study uses the literature review method. Article search uses 4 journal databases from 2019-2023 which were reviewed including Garuda, Google Scholar, Pubmed and Scient Direct and fifteen articles met the criteria. The results showed that the determinants of nurse performance using employee engagement theory were leadership and organization. Nurse performance influences employee engagement, engaged nurses will have high work engagement and nurses who are not engaged will have low work engagement. The implementation of employee engagement during the pandemic there were still several factors that had not been widely intervened, so further research is needed to find out how the theory of employee engagement is applied to find out the performance factors of nurses in implementing infection prevention and control.
Effectiveness of Infrared and William Flexion Exercise on Reducing Pain and Increasing Flexibility in Patients with Low Back Pain
Authors: Halimah Nurul , Pradita Angria
Published: August 2023

Introduction: The condition of low back pain is a musculoskeletal problem without age limit. Patients with lower back pain tend to take analgesic drugs to reduce pain. Apart from pharmacological consumption, the tendency for low back pain sufferers to seek other alternatives, namely; physiotherapy treatment. One of the physiotherapy treatments for low back pain is giving infrared and William flexion exercise or a combination of both. This study aims to determine the effectiveness of infrared and William flexion in reducing pain and flexibility of the lumbar muscles. Method: The research design is quasi experimental pre-posttest with control group. The study population consisted of 44 patients with low back pain at Physiomar Clinic by dividing 40 samples into intervention groups (William flexion exercise) and control group (Infrared and William Flexion Exercise) 2 times/week for 1 month. The pain level measured by using the Visual Analog Scale (VAS) and flexibility using the Modified Schober Test (MST).  The data was analyzed by Wilcoxon and Mann Whitney (α≤0.05). Results: This study in intervention group showed a median pre-post pain score of 6.00-5.00 and a median pre-post flexibility value of 3.00-3.00 (p=0.000); while control group showed a median pre-post pain score of 6.00-2.00 and a median pre-post flexibility value of 2.50-10.00 (p=0.000). The combination of infrared and William flexion exercise is better than William flexion exercise for changes in pain and flexibility in low back pain patients at the physiomar clinic
The potential of betle leaf (Piper betle L.) against Staphylococcus aureus to cure mastitis: A systematic review
Authors: Jannata Rahma Winahyu , Prihantono Prihantono , Idris Irfan
Published: August 2023

Mastitis is a problem in breastfeeding causes nutritional deficiencies in the baby. Staphylococcus aureus is one of the bacteria that causes mastitis. Betle leaf (Piper betle L.) has been used in several health problems and has antimicrobial activity. This study aims to explore the potential of betel leaf (Piper betle l.) against Staphylococcus aureus to cure mastitis. A systematic review was carried out according to the PRISMA guidelines. Searches were conducted in three databases namely PubMed, Google Scholar, and Science Direct. Search using keywords according to the Mesh term, namely 'betle leaf (Piper betle l.)', 'Staphylococcus aureus' and 'Mastitis'. 198 articles were found in a database search. 8 studies were analyzed. All studies found that both types of pipers betle, both green and red, showed positive effects in the treatment of mastitis. Processing techniques, storage, and certain concentrations such as boiling temperature affect the optimum inhibition zone of bacteria. The addition of certain formulas also increases the antimicrobial activity. The use of antibiotics and betel leaf extract can be used simultaneously to treat mastitis. Betle leaf (Piper betle L.), has a positive effect on the management of mastitis, but processing techniques, concentrations, and adjuvants need to be studied further.
On the Correction Method of Test Solutions to the New Model Wave Equation with Two Variable Rates in First Quarter of the Plane
Authors: Lomovtsev Fedor Egorovich
Published: August 2023

A correction method of test solutions into classical solutions to a new inhomogeneous model wave equation with variable two-rates in the first quarter of the plane was developed to derive the minimum smoothness requirement of its right-hand side. In the case of different rates, it is not possible to derive the minimum smoothness of right-hand side of the inhomogeneous model wave equation in the first quarter of the plane without correcting both test generalized and test classical solutions. In this paper, classical solutions to the inhomogeneous two-rate model wave equation and the smoothness criterion of their right-hand side are obtained. We need them to find explicit unique and stable classical solutions and Hadamard correctness criteria to mixed (initial-boundary) problems for this wave equation using developed by the author of the ”implicit characteristics method”.
Overview of FDA guidelines for patient engagement in medical product development and regulatory decision making
Authors: Borovskaya V. G. , Kasimova A. R.
Published: August 2023

About 10 years ago, the FDA launched an initiative to expand the role of patients in informing regulators and sponsors about the most serious consequences of the disease and the main treatment goals that can lead to desired medical outcomes. This initiative has grown into four guidance that aim.
Mechanische Zelldemontage für das direkte Recycling/Mechanical battery cell disassembly for direct end-of-life battery recycling
Authors: Henschel Sebastian , Dörner Philipp-Tobias , Kößler Florian , Fleischer Jürgen
Published: August 2023

Die Ziele der Verkehrswende führen zu einem stetig steigenden Bedarf an Lithium-Ionen-Batterien. Damit diese am Ende ihres Lebenszyklus in einigen Jahren nicht als Abfall anfallen, sondern die darin enthaltenen wertvollen Rohstoffe weiter genutzt werden können, ist ein effektives Recycling im Sinne der Kreislaufwirtschaft notwendig. Hierzu wird in diesem Beitrag ein Konzept zur mechanischen Demontage von Batteriezellen als Grundstein für ein direktes Recycling vorgestellt.

 

The goals of the transportation revolution are leading to a steadily increasing demand for lithium-ion batteries. To prevent the valuable raw materials in these batteries from ending up as waste as soon as the batteries‘ life cycle ends in a few years and to ensure that these materials continue to be used, effective recycling in the sense of a circular economy is necessary. To this end, this paper presents an appraoch for mechanically disassembling battery cells as a cornerstone for direct recycling.
Digitale Transformation industrieller Services/Digital transformation of industrial services
Authors: Große Nick , Hefft Daniel , Wortmann Caroline , Eichholz Jonas , Kiklhorn David
Published: August 2023

In Zeiten zunehmender Vernetzung und Digitalisierung stehen kleine und mittelständische Unternehmen vor der Herausforderung, neben den bisherigen Produkten digitale Zusatzleistungen anzubieten. Es fehlt vor allem an praxisnahen Leitfäden, die aufzeigen, wie sich diese digitale Transformation tatsächlich verwirklichen lässt. Dieser Beitrag vereint abgeleitete Erkenntnisse aus wissenschaftlicher Literatur sowie unternehmerischer Praxis und zeigt zwölf Handlungsempfehlungen zur digitalen Transformation industrieller Services auf.

 

In times of increasing networking and digitization, small and medium-sized enterprises face the challenge of offering additional digital services alongside their existing products. Above all, there is a lack of practical guidelines that show how this digital transformation can actually be realized. This contribution combines findings derived from scientific literature and business practice and gives twelve recommendations for action for the digital transformation of industrial services.
The Seven-parameter Diffusion Model: an Implementation in Stan for Bayesian Analyses
Authors: Henrich Franziska , Hartmann Raphael , Pratz Valentin , Voss Andreas , Klauer Karl Christoph
Published: August 2023

Diffusion models have been widely used to obtain information about cognitive processes from the analysis of responses and response-time data in two-alternative forced-choice tasks. We present an implementation of the seven-parameter diffusion model, incorporating inter-trial variabilities in drift rate, non-decision time, and relative starting point, in the probabilistic programming language Stan. Stan is a free, open-source software that gives the user much flexibility in defining model properties such as the choice of priors and the model structure in a Bayesian framework. We explain the implementation of the new function and how it is used in Stan. We then evaluate its performance in a simulation study that addresses both parameter recovery and simulation-based calibration. The recovery study shows generally good recovery of the model parameters in line with previous findings. The simulation-based calibration study validates the Bayesian algorithm as implemented in Stan.
Rice yield prediction and self-attention visualization using Video Vision Transformer
Authors:   The Korean Data Analysis Society, Kim Dahyun , Na Myung Hwan
Published: August 2023

The government and farmers' organizations are paying much attention to the problem of predicting how much rice can be produced each year. However, it is difficult to accurately predict the yield of rice due to variable factors such as extreme climate change and various pests and diseases that change every year. In this study, images were collected several times during the growing season of rice through a multi-spectral sensor mounted on an unmanned aerial vehicle, and rice yield was predicted using a deep learning algorithm. Multispectral images can be viewed as a kind of image data taken several times at regular intervals, and rice yield was predicted using the Video Vision Transformer (ViViT) model, which applies the Transformer structure to image computer vision among deep learning algorithms. The ViViT model generates patches by dividing the input image into a certain size, and as a result of learning the model by setting the size of these patches differently, it was found that the smaller the patch size, the better the predictive power. In addition, as a result of comparing prediction performance with a 3D CNN model that receives an image as an input in a CNN (Convolutional Neural Network) structure used in the image processing field, it was found that the ViViT model using a small patch size performed better. As a result of visualizing the weight matrix of the ViViT model as a heat map, images taken in mid- to late August appear to be important in yield prediction, making it possible to predict yield about two months before rice harvest.
A Study on the Sufficiency of Old-age Measures for Reverse Mortgage Users
Authors:   The Korean Data Analysis Society, Chun Heuiju
Published: August 2023

This study uses a proportional odds logit model to find out the factors that affect the 'sufficiency of old-age measures prepared so far' for reverse mortgage users among the Housing Finance Corporation's “2021 Housing Pension Demand Survey”. Utilized. Through this, we tried to find an alternative to stabilizing the old-age income of the elderly, targeting the reverse mortgage subscribers. As a result of the analysis, the most influential factor on the sufficiency of reverse mortgage subscribers' retirement plans was the sufficiency of average monthly income, secondly the sufficiency of assets for living in their old age, thirdly satisfaction with reverse mortgage. And next, area of residence followed by average monthly income. The demographic characteristics of the reverse mortgage subscribers had no significant effect at all on the 'sufficiency of old-age measures prepared so far' except for the region. The reverse mortgage subscribers commonly receive monthly payments through a mortgage, so it can be seen that the average monthly income is more important than anything else. It was clearly derived from the analysis results of this study that the monthly income or pension paid each month is the most suitable means of economic stability in old age to prepare for the longevity risk of the reverse mortgage subscribers.
Nursing Work Environment, Job Stress and Turnover Intention of Nurses in Long Term Care Hospitals
Authors:   The Korean Data Analysis Society, Kim Song-Hee , Ahn Hye-Ran , Oh Su-Hyun
Published: August 2023

This study is descriptive survey research to identify factors affecting the turnover intention of nurses working at long-term care hospitals in relation to nursing work environment and job stress. The research subjects are 181 nurses who had been working for at least three months at ten long-term care hospitals, each with 100 to less than 500 beds, located in G Metropolitan City and J Province. The data was collected using a structured questionnaire during the period from August 10 to August 22, 2021. The research tools used in this study are as follows. The collected data was analyzed using the SPSS/WIN 26.0 program, with t-test, ANOVA, Scheffé test, Pearson’s correlation coefficient and multiple regression analysis. The results of this study show that nurses working in long-term care hospitals have higher turnover intention when they are younger and have higher job stress. It was also found that their job stress level is high when they work eight hours or more a day after the outbreak of COVID-19, and have experienced cohort quarantine and COVID-19 confirmed cases. Therefore, to reduce the turnover intention of nurses working in long-term care hospitals, it is necessary to develop methods to reduce their job stress. Further research needs to be performed with additional factors related to job stress, particularly during the current prolonged pandemic.
Effect of non-face-to-face health care volunteer activities of nursing college students in the Covid 19 era
Authors:   The Korean Data Analysis Society, Yoo Je Bog
Published: August 2023

This study was collected from 36 students at K University in J, K-si, K-do to confirm the impact of non-face-to-face health care volunteer programs on career preparation behavior, major satisfaction, nursing professionalism and career decision-making self-efficacy in a situation where volunteer work is limited due to the prolonged Covid 19. This study program developed a non-face-to-face health care volunteer program with Covid 19 for the elderly living alone in the region, and nursing students conducted non-face-to-face volunteer activities for 8 weeks. Descriptive statistics and regression analysis were used for the collected data. The study results showed that the average value immediately after participation and one week after participation increased compared to before the subjects participated in non-face-to-face health care volunteer activities, and career preparation behavior (F=17.789, p=.000), major satisfaction (F=22.472, p=.000), nursing professional (F=19.473, p=.000), career decision-making self-efficacy (F=28.248, p=.000) There was a significant difference. Based on the results of this study, it is suggested to develop and apply various non-face-to-face volunteer programs as non-curricular activities of nursing college students.
The Development of a Rights Awareness Scale related to Clinical Practice for Nursing Students
Authors:   The Korean Data Analysis Society, Hwang Yoon Young , Park Sunghee
Published: August 2023

The purpose of this study was to develop a rights awareness scale related to clinical practice for nursing students. The specific purpose was to verify the content validity, construct validity, and reliability of developed scale. A total of 23 preliminary items were developed. The subjects were 222 3rd and 4th grade students enrolled in nursing departments in Jeonbuk and Daejeon, and were recruited using a convenience sampling method. The data were analyzed using the SPSS Win 24 program, exploratory factor analysis was conducted to verify the construct validity of the scale, and analysis was performed using the maximum likelihood with varimax rotation method. To verify reliability, Cronbach's alpha and Cronbach's alpha coefficient were analyzed when items were removed. The scale developed through this study consisted of three sub-factors with a total of 13 items, and the three sub-factors were 'rights of respect'(6 items), 'rights of learning'(4 items), and 'rights of protection'(3 items). The scale developed through this study is expected to be used in future to measure and analyze the level of awareness of rights related to clinical practice of nursing students.
A Longitudinal Study on the Core Competencies of K University
Authors:   The Korean Data Analysis Society, Choi Hyun Seok
Published: August 2023

This study aims to track the change process of core competencies of college students over time using the longitudinal data of the core competencies of students at K University. For the purpose of this study, 1,639 students enrolled in the 2019 academic year of K University who enrolled for 8 consecutive semesters were analyzed. The survey data used the scores for each FACE competency of four talent traits, namely Frontiership(F), Atruism(A), Culture(C), and Expertise(E) accumulated in the student competency assessment system. As a result of the analysis, students who were admitted through the occasional screening, in which students are selected by comprehensively evaluating their potential and personality in addition to their academic ability, obtained high competency scores in the Frontiership(F) area and Alturism(A) area, and the students who entered the regular screening based on merit-based selection obtained high competency scores in the Culture(C) area and the Expertise(E) area. Through this study, core competencies can be viewed as other forms of learning outcomes, and discriminatory learning outcomes according to gender and typical types were identified. It is hoped that this study will help in the development of customized curricula and extracurricula and in the formulation of university policies.
Tijd onder druk: tijdsdruk als maatschappelijk probleem
Authors: te Braak Petrus
Published: August 2023

Met Waar blijft mijn tijd? schreef Tanja van der Lippe een lezenswaardig boek over tijdsdruk als maatschappelijk probleem voor een breed publiek van sociologen en beleidsmakers.
Gender Analysis on the Effect of Tax Incentives, Tax Knowledge, and the Application of the E-Filing System on Tax Compliance (Survey of MSMEs in Bekasi City)
Authors: FATTAKH Adam Navi’ul , TARMIDI Deden
Published: August 2023

The purpose of this research is to examine and analyze the differences and influence of tax incentives, tax knowledge, and the implementation of e-filing system on tax compliance from the point of view of male and female gender as an update from previous research. The population of this study is taxpayers who are MSME players in Bekasi city. The data collection method was carried out by distributing questionnaires to MSME taxpayers. The sample in this study used a simple random sampling method. The data processing technique uses Structural Equation Modeling (SEM) using SmartPLS 3.0. The results showed that 1) there is no difference in the effect of tax incentives on tax compliance from the point of view of male and female gender, this is because taxpayers who are male or female MSME players during the covid-19 pandemic have not received the benefits of tax incentives directly and have not fully participated in education related to information about tax incentives. 2) there are differences in the effect of tax knowledge on tax compliance, where male gender has a positive and significant effect while female gender has no effect. Male have more responsibility than female in working or running a business, especially during the covid-19 pandemic. MSME taxpayers with male gender in Bekasi city already have sufficient knowledge of tax law and administration in carrying out tax reporting.
NuSTAR Observations of Four Mid-IR–Selected Dual AGN Candidates in Galaxy Mergers
Authors: Pfeifle Ryan W. , Weaver Kimberly , Satyapal Shobita , Ricci Claudio , Secrest Nathan J. , Gliozzi Mario , Blecha Laura , Rothberg Barry
Published: August 2023

Mergers of galaxies are a ubiquitous phenomenon in the universe and represent a natural consequence of the “bottom-up” mass accumulation and galaxy evolution cosmological paradigm. It is generally accepted that the peak of active galactic nucleus (AGN) accretion activity occurs at nuclear separations of ≲10 kpc for major mergers. Here we present new NuSTAR and XMM-Newton observations for a subsample of mid-IR preselected dual AGN candidates in an effort to better constrain the column densities along the line of sight (LOS) for each system. Only one dual AGN candidate, J0841+0101, is detected as a single, unresolved source in the XMM-Newton and NuSTAR imaging, while the remaining three dual AGN candidates, J0122+0100, J1221+1137, and J1306+0735, are not detected with NuSTAR; if these nondetections are due to obscuration alone, these systems are consistent with being absorbed by column densities of log(N
H/cm−2) ≥ 24.9, 24.6, and 24.3, which are roughly consistent with previously inferred column densities in these merging systems. In the case of J0841+0101, the analysis of the 0.3–30 keV spectra reveal an LOS column density of N
H ≳ 1024 cm−2, significantly larger than the column densities previously reported for this system and demonstrating the importance of the higher signal-to-noise ratio XMM-Newton spectra and access to the >10 keV energies via NuSTAR. Though it is unclear if J0841+0101 truly hosts a dual AGN, these results are in agreement with the high obscuring columns expected in AGNs in late-stage mergers.
Neutrino-driven Winds in Three-dimensional Core-collapse Supernova Simulations
Authors: Wang Tianshu , Burrows Adam
Published: August 2023

In this paper, we analyze the neutrino-driven winds that emerge in 12 unprecedentedly long-duration 3D core-collapse supernova simulations done using the code Fornax. The 12 models cover progenitors with zero-age main-sequence mass between 9 and 60 solar masses. In all our models, we see transonic outflows that are at least 2 times as fast as the surrounding ejecta and that originate generically from a proto−neutron star surface atmosphere that is turbulent and rotating. We find that winds are common features of 3D simulations, even if there is anisotropic early infall. We find that the basic dynamical properties of 3D winds behave qualitatively similarly to those inferred in the past using simpler 1D models, but that the shape of the emergent wind can be deformed, very aspherical, and channeled by its environment. The thermal properties of winds for less massive progenitors very approximately recapitulate the 1D stationary solutions, while for more massive progenitors they deviate significantly owing to aspherical accretion. The Y

e
temporal evolution in winds is stochastic, and there can be some neutron-rich phases. Though no strong r-process is seen in any model, a weak r-process can be produced, and isotopes up to 90Zr are synthesized in some models. Finally, we find that there is at most a few percent of a solar mass in the integrated wind component, while the energy carried by the wind itself can be as much as 10%–20% of the total explosion energy.
NY Bootes: An Active Deep and Low-mass-ratio Contact Binary with a Cool Companion in a Hierarchical Triple System
Authors: Meng Fangbin , Zhu Liying , Qian Shengbang , Liu Nianping , Li Linjia , Matekov Azizbek
Published: August 2023

The first detailed photometric and spectroscopic study of G-type short-period binary NY Boo is presented. The radial velocity curve was obtained by the cross-correlation function (CCF) method based on LAMOST and SDSS spectra, which derived its mass ratio as q = 0.139(1/7.2). The CCF profiles of the SDSS spectra clearly show the existence of a cool third component, which is supported by the results of the orbital period investigation. The period study based on the O-C analysis indicates that besides a long-term decrease, the orbital period has a periodic oscillation due to the light-travel time effect caused by a third body. When the third light contribution is consistent with the CCF results, the orbit of the third body and the inner pair are non-coplanar with m
3 = 0.31 M
⊙. Combining with the TESS light curves, it is found that the target is a deep and low-mass-ratio contact binary (DLMRCB) with a fill-out factor of f = 73%. The notable asymmetry in light curves was detected and explained by the spot model very well. The spectroscopic profiles, the cyclic variation in the O-C diagram, and the radial velocity curve and light-curve solutions all suggest that NY Boo is a hierarchical triple system with a cool tertiary component orbiting around an active DLMRCB. With the orbital period shrinking, the binary may eventually merge. The period of NY Boo decreases faster than other shrinking DLMRCB, together with active inner pair and non-coplanar tertiary component, making NY Boo an important target for studying the late evolution of binaries.
The Case for Future Gravity Science Investigations at Saturn with a Planetary Orbiter
Authors: Parisi Marzia
Published: August 2023

The next phase in the robotic exploration of the Saturnian system will target unresolved questions about the gas giant’s atmosphere, interior, magnetosphere, and rings that were left open by investigations on board the Cassini mission. Among these, we find gravity science objectives, which relate mainly to explaining the origin of the large wind-induced gravity signal and reconciling existing incongruities regarding the internal density distribution. Here we attempt to identify which future observations may yield additional information about Saturn’s internal mechanisms. We report on the results of precise numerical simulations of a gravity science experiment carried out with a planetary orbiter in the 2040s and characterized by varying periapsis altitude over the 1 bar planetary surface. The goal is to identify achievable measurement requirements that can advance the current understanding of Saturn’s interior and atmospheric dynamics. We find that inclined, elliptical orbits with low-altitude closest approaches over the northern hemisphere can improve the present determination of the gravity field coefficients by up to 1 order of magnitude, provided that at least a dozen pericenters are devoted to gravity science. Furthermore, if future observations are combined with the available Cassini Grand Finale data in the southern hemisphere, a significant improvement in terms of maximum measurable gravity field degree is observed.
Korean guidelines for the management of gout
Authors: Lee Jennifer Jooha , Lee Ji Soo , Chung Min Kyung , Ahn Joong Kyong , Choi Hyo-Jin , Hong Seung-Jae , Yoon Chong-Hyeon , Kim Su-Hyun , Jeong Kyung-Hwan , Kim Jong-Woo , Kim Bo-Yeon , Shin Jin-Ho , Kim Woo Gyu , Kim Soo-Young , Kim Hyun-Jung , Song Jeong-Soo , Jun Jae-Bum , Park Hyun-Ah , Chae Shung Chull , Choi Bum Soon , Kim Tae Nyun , Kim Hyun Ah
Published: August 2023

Gout is the most common form of arthritis, with the prevalence increasing worldwide. The present treatment guidelines provide recommendations for the appropriate treatment of acute gout, management during the inter-critical period, and prevention of chronic complications. The guidelines were developed based on evidence-based medicine and draft recommendations finalized after expert consensus. These guidelines are designed to provide clinicians with clinical evidence to enable efficient treatment of gout.
Thermohydraulic Analysis of Aqueous Dispersions Effectiveness with TiO2 and Al2O3 Nanoparticles in a U-Shaped Geothermal Probe
Authors: Rymar Tetiana , Stanislavchuk Oksana
Published: August 2023

The paper deals with the influence of Al2O3 and TiO2 nanoparticle admixtures to the water coolant on the heat exchange and the pumping power of its single-phase flow in the U-shaped vertical collector of the heat pump geothermal probe. The heat carrier is aqueous dispersions with TiO2 and Al2O3 nanoparticles at volume concentrations of 0.1 %, 0.3 %, 0.6 %, 1.0 % and 1.3 %. Studies were performed for turbulent single-phase flow with a range of Reynolds numbers 11,500–67,000 and Euler numbers 48–75 and compared with similar results for a water coolant. The optimal volume fraction of nanoparticles in the coolant, at which nanofluids provide the lowest pumping capacity of the coolant compared to the base fluid, ensuring the required heat transfer coefficient at the level of 2230 W∙m-2∙K-1 is analyzed in the article.
Influence of Welding Tool Geometry on the SFSW Joint Dimensions of the EN AW 1200 Aluminium Alloy
Authors: Mnerie Gabriela-Victoria , Botila Lia-Nicoleta , Perianu Ion Aurel , Duma Iuliana , Dobrin Emilia , Binchiciu Emilia-Florina
Published: August 2023

The aim of the present paper is to study the aspects regarding the influence of the welding tool geometry on the joint dimensions during the SFSW (Submerged Friction-Stir Welding) of the EN AW 1200 aluminium alloy. Different tool geometries for SFSW welding of EN AW 1200 aluminium alloy parts were used, and joint size was analysed by macrostructural investigations. The key characteristics of the tool-weld interaction can be extracted, analysed and summarized to provide guidance on the optimal tool selection for a given set of welding conditions.
Friction Stir Spot Welding of Steel Structures - A Brief Review
Authors: Georgescu Tatiana , Nitu Eduard Laurentiu , Iordache Daniela Monica , Botila Lia-Nicoleta
Published: August 2023

Friction stir welding is a relatively new technique, which, due to its advantages, has been continuously developed and applied to industrial applications. Friction stir spot welds (FSSW) are one variant of friction stir welding (FSW) where the traverse part of the FSW process is eliminated, i.e., the tool is only plunged into the material and retracted. The resulting weld is a point or “spot” weld. This process of joining materials in solid state is an extremely complex one because of the physical phenomena that occur during the process, which makes the research still in full development. The paper presents an analysis of recent scientific work on the use of the FSSW process for the joining of steel structures. Thus, this study analyses the types of steel and joined structures, the process parameters used in experimental research, and the mechanical properties of FSSW joined steel structures. The main conclusions of the studied papers are summarized and the main research directions on the steel structures joined by the FSSW process are identified.
Effect of Bi3+ and Fe3+ Ions Substitution on Electrical Response of BaTiO3 Ceramic
Authors: Gouitaa Najwa , Ahjyaje Fatemazahra Z. , Abdi Farid , Lamcharfi Taj-Dine
Published: August 2023

In this study we have synthesized the iron and bismuth co-substituted BaTiO3 ceramic, with the general formula: Ba0.95Bi0.05Ti1-xFexO3 for x=0.00 to 1.00, by solid state route. The impedance and electrical properties of these materials were investigated. The dispersion in conductivity in these ceramics can be described by Jonscher's power law and suggests a mechanism of conduction that is related to the Correlated Barrier Jump (CBH) model, according to which charge transport occurs between localized states due to a jump of the potential barriers. The conductivity results confirmed the semi-conductor behavior of these ceramics at high frequency region. The Nyquist plots for the different ceramics confirmed the simple electrical relaxation phenomena with the presence of a Debye-type relaxation phenomenon for x<040 of Fe content. While above this rete, the relaxation behavior is transformed into a Non-Debye phenomenon.
Optimization of the Technology of Creating Sensitive Gas Sensors Based on Zinc Oxide
Authors: Minska Natalya , Ponomarenko Roman , Shevchenko Roman , Antoshkin Olekciy
Published: August 2023

The main achievements in the development of resistive type gas sensors are analyzed, in particular, the creation of nanostructures based on metal oxides, which make it possible to significantly improve the performance characteristics of the sensors. Experimental samples of the gas sensor based on ZnO were obtained by magnetron sputtering on direct current. The effectiveness of the gas sensor system for recognition and analysis of gases and their mixtures has been established. A study of the sensitivity of experimental samples to the influence of the target gas CO was carried out. The target gas concentration varied from 50 to 150 ppm. It was established that the ZnO-based gas sensor exhibits the highest sensitivity at a target gas concentration of 100 ppm. The sensitivity of the gas sensor increases with increasing exposure time to the target gas.
Foam-glue syringe: a novel combined echo-guided endovascular treatment
Authors: Tessari Lorenzo , Tessari Mirko
Published: August 2023

Not available.
Diagnostic accuracy of cone-beam computed tomography with modified grayscale range for detection of buccal cortical plate defects adjacent to dental implants
Authors: Yaghoobi Soophia , Kajan Zahra Dalili , Khosravifard Negar , Sigaroudi Ali Khalighi , Jouybari Reza Modanlou
Published: August 2023

Background:

This study assessed the diagnostic accuracy of cone-beam computed tomography (CBCT) with a modified grayscale range for the detection of buccal cortical plate defects adjacent to dental implants.

Materials and Methods:

In this in vitro experimental study, titanium implants were inserted in 168 fresh bovine bone blocks with 1–1.5 mm of buccal cortical plate thickness. The blocks were randomly divided into four groups (n = 42). No defect was created in the control blocks. In the three experimental groups, cortical plate defects were randomly created in the cervical, middle, or apical third by a round bur with a 2-mm diameter (n = 42). All blocks underwent CBCT with and without change in the grayscale range. Two observers evaluated all images regarding the presence/absence of defects. Kappa test is used for the agreement of the observers. The diagnostic accuracy of the two modalities was compared by calculating the area under the receiver operating characteristic curve (AUC) (P ≤ 0.05). The sensitivity and specificity values were also compared.

Results:

The AUC was not significantly different between the two modalities with and without altered grayscale range (0.754 vs. 0.762, respectively, P = 0.716). The diagnostic sensitivity of CBCT with and without change in the grayscale range was 51% and 52%, respectively, with a specificity of 100% for both. The diagnostic accuracy of CBCT with and without altered grayscale range had no significant difference for apical and middle third defects (P > 0.05) and was significantly higher than that for the cervical third defects (P < 0.05).

Conclusion:

Changing the grayscale range does not improve the diagnostic accuracy of CBCT for the detection of buccal cortical plate defects adjacent to dental implants.
Effect of bioactive glass-containing dentin adhesives on microshear bond strength of composite restorations
Authors: Mousavinasab Sayed Mostafa , Sarandi Farzad , Rezvanian Parsa , Atai Mohammad , Mousavinasab Sepidehsadat
Published: August 2023

Background:

In general, bioactive glasses (BAGs) can react with tissue minerals and promote remineralization. However, the application of BAG in bonding agents and its impact on bond strength remain uncertain due to insufficient information and limited research in this area.

Materials and Methods:

This study employed a randomized controlled design to assess the effects of composite-bonding agents with varying BAG contents on shear bond strength and fracture pattern in sound and demineralized teeth, with and without thermocycling. Thus, 80 healthy third molars were randomly divided into two groups: sound teeth and demineralized teeth. Five bonding agents were applied to the prepared dentin surfaces, including four experimental composite-bonding agents with varying BAG content (0, 0.2, 0.5, and 2 wt%) and the Adper Single Bond commercial bonding as control. The shear bond strength of all samples was measured using a universal tester. The type of failure of each specimen was determined using a stereomicroscope. Kruskal–Wallis nonparametric test was performed on the obtained shear bond strength data followed by Mann–Whitney post hoc test with Bonferroni correction to determine statistical significance. The level of significance was considered P ≤ 0.05 for all tests and was adjusted by Bonferroni correction.

Results:

Demineralization significantly decreased shear bond strength in the teeth samples. Adper Single Bond exhibited the highest shear bond strength values. The addition of BAG did not have a significant influence on shear bond strength, regardless of demineralization or thermocycling condition. Adhesive failure was the predominant type of failure in all groups.

Conclusion:

The incorporation of BAG filler up to 2 wt% did not result in significant changes in shear bond strength. Experimental adhesive bonding agents with 2 wt% BAG content demonstrated shear bond strengths comparable to the commercial bonding agent in sound nontreated, sound thermocycled, demineralized nontreated, and demineralized thermocycled groups.
Comparison of Different Rotary Nickel–titanium Systems to Evaluate Coronal Leakage of Root Canals: An in Vitro Study
Authors: Al-Shamaa Rasha M.
Published: August 2023

Introduction: The objective of the study was to assess coronal leakage following root canal treatment utilizing four Micro Mega rotary nickel–titanium files, specifically One shape, Two shape (s1), Two shape (s2), and Revo-S, by means of dye penetration analysis using a stereomicroscope set at 20× magnification. Methods: Fifty human lower premolar teeth that were extracted for orthodontic reasons were included in the study, excluding teeth with cracks, caries, severe curvature (<25°), or root resorption. The teeth were randomly assigned to five groups using www.random.org, and standard endodontic treatments were performed as per the manufacturer’s instructions using Micro Mega One shape, Two shape (s1), Two shape (s2), and Revo-S rotary nickel–titanium systems. To measure dye penetration, the teeth were immersed in a 2% methylene blue dye solution for approximately 24 hours and then axially split using a diamond sectioning disc, with measurements taken using a stereomicroscope. Results: The study groups showed statistically significant differences (P < 0.001), and all pairwise comparisons were found to be significantly different according to the post hoc test (P < 0.001). Conclusion: Our results showed that various rotary file designs significantly affect coronal leakage.
The impact of chemotherapy on quality of life in advanced-stage lung cancer patients
Authors: Fernandes Sharon S. , Saini J. K.
Published: August 2023

Background:

Most patients with lung cancer are diagnosed at advanced stages of the disease, where chemotherapy plays an important role. This prospective study was conducted to determine the impact of palliative chemotherapy on quality of life (QOL) in advanced-stage lung cancer patients.

Methods:

QOL in lung cancer out-patients was assessed at diagnosis and end of treatment using the EORTC QLQ-C30 questionnaire. Changes in mean QOL scores were calculated. The correlation between patients’ tumor response and change in QOL scores was also studied. Scoring was done according to the EORTC manual and results were analyzed using SPSS statistical package.

Results:

Out of 52 patients, 46 (88.46%) were men and six (11.54%) were women. After chemotherapy, patients’ overall QOL score improved significantly (P = 0.005). Cognitive functioning significantly worsened (P = 0.01). Physical functioning (PF) and emotional functioning (EF) scores improved, while role functioning (RF) and social functioning (SF) scores worsened. Pain, dyspnea, and sleep significantly improved (P = 0.001, P = 0.001, and P = 0.005 respectively). On the other hand, nausea, vomiting (P = 0.000), diarrhea (P = 0.004), and financial difficulties (P = 0.009) worsened. Overall QOL improved in patients with partial tumor response (PR) and stable disease (SD) (P = 0.044 and P = 0.000, respectively), but worsened in progressive disease group (PD) (P = 0.648). Symptom scores improved markedly in PR and SD groups. Chemotherapy toxicity was maximum in PD group (P = 0.028).

Conclusion:

Global quality of life and symptom control significantly improved in lung cancer patients after chemotherapy. Deterioration of cognitive functioning, increased financial burden, and chemotherapy-related toxicity were noteworthy. Changes in QOL were coherent with patients’ tumor response.
Effect of Yoga-based Interventions on Intraocular Pressure
Authors: Singh Jayvindra , Katiyar V. K. , Singh Daya Shankar , Kala Niranjan
Published: August 2023

Chronic increase of intraocular pressure (IOP) is highly associated with the development of retinal ganglion cell death and exists as a primary risk factor for various eye disorders, including glaucoma, which is a leading cause of irreversible blindness. In recent years, an increased interest in using complementary and alternative therapies such as yoga has been seen for the treatment of glaucoma. This review is aimed at evaluating and understanding the studies on yoga-based exercises on IOP. Three databases, i.e. PubMed, Cochrane Library, and Google Scholar were searched, and 10 articles were included that met the criteria for inclusion. These studies involved different yoga-based practices such as trataka and eye movements, breathing exercises or pranayama, yoga postures, and meditation. The studies suggested that yoga practices were able to influence IOP levels in both healthy and clinical populations. Yoga postures were associated with an increase in IOP levels, whereas other yoga practices, i.e. eye exercises, pranayama, and meditation, reduced the IOP levels. Yoga-based eye exercises, such as palming, trataka, and eye movement and relaxation, appeared to have the most persistent effects. Yoga practices could decrease IOP levels; however, yoga postures should be contraindicated with patients with glaucoma and higher IOP levels.
Transvaginal natural orifice specimen extraction surgery for 3D laparoscopic radical cystectomy: A cohort study
Authors: Wu Liyuan , Zhao Qinxin , Yang Feiya , Wang Mingshuai , Xing Nianzeng
Published: August 2023

Objective:

Transvaginal natural orifice specimen extraction surgery (NOSES) has been widely used in laparoscopic surgery due to its benefits. However, laparoscopic radical cystectomy (LRC) with NOSES has rarely been reported.

Materials and Methods:

A retrospective analysis of 25 patients who underwent 3D LRC with NOSES from November 2014 to November 2019 was performed. The clinical and perioperative related data, peri and postoperative complications, and oncologic outcomes were recorded.

Results:

Surgery was successfully completed in 25 patients, and none were converted to open surgery. Mean total operative time was 294.1 ± 48.80 min. Mean NOSES time was12 ± 6.48 min. The median post-op hospital stay was 10.5 d (range 6-27 d). The median visual analog pain score on post-op day 1, 2, and 3 was 2, 2, and 1, respectively. Thirteen patients had 30-day complications (3 had Clavien grade I and 11 had Clavien grade II). Pelvic floor distress inventory-short form 20 (PFDI-20) was 9.8 ± 1.9 after three months (compared with pre-PFDI-20, P = 0.06) and 9.3 ± 1.2 after six months (compared with pre-PFDI-20, P = 0.15). At the mean follow-up of 24.7 ± 12.05 months (range 11-60 months), one patient (4%) had recurrence, two (8%) had metastasis, and one (4%) died.

Conclusion:

Transvaginal NOSES in 3D LRC is safe and feasible. Understanding the female vagina anatomy and comprehending the techniques is conducive to avoid incision-related complications. NOSES is minimally invasive with good cosmetic outcomes with few surgical complications or affecting pelvic floor function.