bluuebunny/crossref_metadata_2025 huggingface dataset:
Jean Riolan fils et la défense de la méthode thérapeutique de Galien
Authors: Dessì Cristina
Published: June 2022

Dans ses Curieuses Recherches sur les Escholes en Medecine de Paris et de Montpellier (1651), l’anatomiste Jean Riolan fils (1580 -1657) présente entre autres les grandes lignes de l’usage clinique et les modalités de la thérapeutique de la Faculté de Médecine de Paris, mais profite aussi surtout de cette publication pour rejeter les privilèges que Théophraste Renaudot, médecin montpelliérain, avait obtenus dans la capitale. Défenseur passionné de son école, Riolan fils revendique la primauté de la faculté parisienne dans les études médicales en France face aux critiques que plusieurs formulaient contre les pratiques des soins les plus couramment utilisés par ses confrères. Egalement adversaire infatigable de Harvey, si Riolan fils reconnaissait l’importance de la découverte de la circulation du sang, il ne l’acceptait qu’en partie, et qu’à la condition que celle-ci n’aille à l’encontre de la methodus medendi de Galien.
Le France : un écrin pour la décoration sur aluminium d’Henriette Huchard
Authors: Paupelin-Huchard Catherine
Published: June 2022

Née à Paris en 1908, Henriette Huchard entre à l’École nationale des beaux-arts de Paris et obtient en 1935 les diplômes de professorat de dessin de l’État et de la Ville de Paris. Parallèlement à ses activités d’enseignement, ses travaux artistiques l’amènent à utiliser une diversité de supports et de matériaux notamment l’aluminium ; c’est ainsi qu’en 1971 elle se voit confier une commande dans le cadre de la rénovation du grand salon de la classe touriste du paquebot France . Il s’agit d’une décoration constituée de deux grands panneaux, l’une des quatre œuvres d’art ajoutée durant l’exploitation de ce navire sous pavillon français.
Le dialogue entre clinique médicale et psychanalyse
Authors: Leguil Clotilde , Charazac Pierre , Rochas Bruno , Sans Jofre Michel , Pouget Julie
Published: June 2022

L’expérience de l’analyse conduit à accorder une certaine valeur à la parole et à s’intéresser à ce à quoi on ne s’intéresserait pas habituellement au quotidien. Le fait d’avoir fait sur soi-même l’expérience des effets de la parole permet ensuite d’avoir un autre rapport à la parole et de pouvoir écouter l’autre sans s’identifier, sans avoir besoin de se reconnaître nécessairement pour s’intéresser, finalement, à ce que l’autre dit. C’est-à-dire de pouvoir aborder l’altérité de l’autre sans en être angoissé.
Devenir pauvre : du revenu au ressenti
Authors: Richard Éléonore
Published: June 2022

Les chercheurs en économie s’accordent généralement pour dire qu’une mesure unique de la pauvreté, qu’elle soit relative, absolue, objective ou subjective, ne suffit pas pour saisir la réalité complexe qu’elle recouvre. À partir d’un échantillon de ménages français de l’enquête Statistiques sur les ressources et les conditions de vie (SRCV) menée par l’Institut national de la statistique et des études économiques (Insee) entre 2010 et 2016, cette étude montre que le bien-être subjectif des individus est corrélé à l’entrée et à la sortie de la pauvreté en conditions de vie, mais que les individus ne semblent pas affectés par les transitions vers et hors la pauvreté monétaire à 60 % du revenu médian. Il apparaît que seul le franchissement du seuil monétaire à 80 % du revenu médian est significatif pour les individus interrogés, faisant ainsi de ce seuil une ligne subjective de pauvreté. Certains événements sociodémographiques (séparation, chômage…) semblent précipiter l’entrée dans la pauvreté à ce seuil, jugé critique par les individus, et qui représente environ 30 % de la population française.
Relationship of Earthquake Exposure, Locus of Control, Coping Strategy, and Posttraumatic Stress Disorder Among Adolescent Survivors
Authors: Tian Yali , Xi Wanqiong , Jiang Xiaolian , Cao Jiating , Li Minlu
Published: June 2022

A cross-sectional study was performed to examine the incidence of posttraumatic stress disorder (PTSD) among adolescent survivors 2 years after the 2017 Jiuzhaigou earthquake, and to identify risk factors and their interaction effects. A total of 4,131 adolescents were recruited. PTSD was assessed using the PTSD Checklist-Civilian Version, and locus of control (LOC) and coping strategy were assessed using the Internality, Powerful Others and Chance Scale and Coping Styles Scale, respectively. The prevalence of PTSD was 5% and the relationship between external LOC and PTSD and negative coping and PTSD seemed moderated by environmental factors. These factors should be considered along with external LOC, especially among adolescents with high levels of earthquake exposure. Positive coping strategies may help adolescents manage stress after a severe earthquake. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(11), 41–47.]
Exploring Mental Health and Well-Being Among University Faculty Members: A Qualitative Study
Authors: Smith Jacqueline M. , Smith Jennifer , McLuckie Alan , Szeto Andrew C. H. , Choate Peter , Birks Lauren K. , Burns Victoria F. , Bright Katherine S.
Published: June 2022

The current exploratory qualitative study describes how environmental factors, social interactions, personal experiences, and stigma affect mental health and help-seeking. In-depth, semi-structured interviews were conducted with nine university faculty members who self-identified as having mental illness–related concerns. Using Bronfenbrenner's ecological systems framework and thematic analysis, four domains were determined: (1) macrosystem (i.e., influences of academic culture); (2) mesosystem (i.e., influences of faculty leadership and interpersonal dynamics); (3) microsystem (i.e., influences of individual mental health experiences); and (4) exosystem (i.e., influences of stigma across structural, interpersonal, and intrapersonal levels). These domains included barriers to and facilitators of mental health and help-seeking. Findings suggest that competitiveness and individualism may perpetuate stereotypes that mental illnesses are inherent weaknesses, and that seeking help is a barrier to academic success. Recommendations for future research are provided. [Journal of Psychosocial Nursing and Mental Health Services, 60(11), 17–25.]
Calm Down With Kava: What Clinicians Need to Know
Authors: Goldin Deana , Salani Deborah
Published: June 2022

Kava is a neuroactive medicinal herb that can induce pharmacological effects when ingested. As an herbal remedy, kava exhibits sedative, anesthetic, euphoriant, and entheogenic effects. Kava is used as a relaxant, pain reliever, and remedy for anxiety and insomnia. In the United States, kava is marketed as a safe dietary supplement. Kava's popularity is on the rise due to heightened awareness and interest in natural plant-based health alternatives. Although meta-analyses and systematic reviews of kava use in treating anxiety are favorable, results remain inconsistent. Due to poor quality control, diversity of kava products, and lack of standardization, health care professionals, such as nurses, advanced practice nurses, physicians, physician assistants, and pharmacists, need to be familiar with the pharmacology, possible polydrug interactions, and management of kava use as a remedy for anxiety-related conditions. The purpose of the current article is to provide an overview of kava and its use as a remedy for psychological issues, such as anxiety and nervousness. [
Journal of Psychosocial Nursing and Mental Health Services, 60
(12), 17–24.]
Using Oralstats for prosodic characterisation of speakers in different discourse genres
Authors: Cabedo Nebot Adrián
Published: June 2022

This paper presents the prosodic and morphosyntactic analysis of 437 intonational phrases, 2777 words and 12520 phones registered from the speech of four Spanish politicians in four different discourse genres (TV gathering, press conference, political rally and interview). Based on methods from forensic linguistics, sociolinguistics, phonetics and computational linguistics, a set of R scripts called Oralstats has been developed, which allows to carry out a multivariate, dynamic and interactive analysis of acoustic and textual data aligned with PRAAT. By doing so, a new computational approach is suggested for finding individual forensic marks, combining both phonetic and linguistic factors, such as lexical or morphosyntactic values. Data exploration comes from the visualization of prosodic and morphosyntactic variables collected through decision trees, heatmaps and boxplots. The results show how speakers behave in a significantly similar way when it comes to differentiating themselves by genre; however, in confrontational genres some unexpected phonic marks were found, such as low intensity or low pitch, (the expected behavior being the opposite), thus enabling us to single out some of the speakers.
Prediction of flexural fatigue life and failure probability of normal weight concrete
Authors: Sohel K.M.A. , Al-Hinai M.H.S. , Alnuaimi A. , Al-Shahri M. , El-Gamal S.
Published: June 2022

Fatigue life has to be considered in the design of many concrete structures at various stress levels and stress ratios. Many flexural fatigue test results of plain normal-weight concrete are available in the literature and almost every set of test results provides different fatigue equations. It is necessary, though, to have a common fatigue equation to predict the design fatigue life of concrete structures under flexural load with reasonable accuracy. Therefore, a database of flexural fatigue test results was created for concrete with strengths ranging from 25 to 65 MPa; this database was used to derive new fatigue equations (Wöhler fatigue equation and S-N power relationship) for predicting the flexural fatigue life of normal-weight concrete. The concept of equivalent fatigue life was introduced to obtain a fatigue equation using the same stress ratio. A probabilistic analysis was also carried out to develop flexural fatigue equations that incorporate failure probabilities.
New Heart Features for More Effective Human Identification
Authors: Safie S.I
Published: June 2022

Biometric verification is a process to authenticate whether the subject is what it claims to be, based on the characteristics of the human body. These characteristics must meet seven (7) conditions to enable them to be used in a practical biometric system. These conditions are namely distinctiveness, performance, collectability, acceptability, universality, circumvention, and permanence. Electrocardiogram (ECG) is a human body characteristic measured from the heart that meets these seven conditions. Choosing the correct features from the ECG is important to get a high authentication rate. This paper proposed a new algorithm known as Bipolar Slope Feature (BSF) for ECG features selection. It is developed based on the relationship of slopes between several locations in a complete ECG cycle. The Receiver Operating Characteristic (ROC) curve is used to measure the effectiveness of this technique for the application of biometric verification.
Flipped Classroom for Pharmacology Teaching in a Malaysian Medical School using Online Tools during the COVID-19 Pandemic: Knowledge Gained and Student Perception
Authors: Heethal Jaiprakash
Published: June 2022

Introduction: The usage of a flipped classroom to instruct medical students is becoming more common. During the COVID-19 epidemic, this method of teaching and learning proved to be effective. This study aims to analyse the knowledge gained and perceptions of medical students who were taught pharmacology in a flipped classroom utilising online tools.

Methodology: A total of 50 second-year medical students took part in the research. Local anaesthetics and adverse drug reactions were the two topics covered in the flipped classroom. A few weeks before the session, pre-reading materials were distributed, which included voice-over PowerPoint videos and AMBOSS links. Students were given pre and post-tests using Microsoft forms to assess their knowledge gained during the face-to-face session. Higher-order thinking questions were uploaded as a Kahoot session, and the questions were also posted using Microsoft PowerPoint in an interactive session. A validated questionnaire was used to collect feedback, and the responses were graded on a 4-point Likert scale. Descriptive statistics were used to analyse the data.

Results: There were 18 females and 32 males among the 50 students. The students' average age was 21.4±0.6 years. When the pre and post-test scores were compared, statistically significant results were obtained (P-value .000). The students had a favourable attitude about flipped classrooms. Most students said that the flipped classroom increased their understanding of the subject (mean score 3.760.44). They also thought the flipped classroom was a fun way to learn (mean score 3.710.47). The overall perception of the flipped classroom was excellent (53%).

Conclusion: The knowledge gained by the students during the flipped classroom session in pharmacology was significant. The students had a favourable opinion of the flipped classroom method of teaching pharmacology.
Basics and Descriptions of Different Biomedical Signals
Authors: Sarada Macha
Published: June 2022

In the current digital era, many sensor-based devices and application are used for better life. Sensors, which are embedded in touchscreens and touchpads, are tactile in nature. These sensors acquire data from the environment that are converted into an electrical signal for further processing in the sensor system. The main aim of sensors is to estimate a specific quantity and generate a signal for interpretation. The human body constantly conveys health information that reflects the condition of organs and general health information. Such health information is typically collected by physical devices that measure different types of information such as blood sugar levels, blood pressure, heart rate, nerve condition, and brain activity. Doctors use these measurements to make diagnostic and treatment decisions. Engineers are implementing new acquisition devices that noninvasively measure different types of signals for further analysis using mathematical algorithms and formulae to develop models. This chapter includes the basics and description of different biomedical signals.
Quality-Controlled ECG Data Compression and Classification for Cardiac Healthcare Devices
Authors: Jha Chandan Kumar
Published: June 2022

Electrocardiogram (ECG) signals are widely used by cardiologists for the early detection of cardiovascular diseases (CVDs). In the early detection of CVDs, long-term ECG data is used for analysis. Healthcare devices used for the acquisition of long-term ECG data require an efficient ECG data compression algorithm. But compression of ECG signal with maintaining its quality is a challenge. Hence, this chapter presents a quality-controlled compression method that compresses the ECG data efficiently with retaining its quality up to a certain mark. For this, a distortion measure is used with specifying its value in a tolerable range. The compression performance of the proposed algorithm is evaluated using ECG records of the MIT-BIH arrhythmia database. In performance assessment, it is found that the compression algorithm performs well. The compressed ECG data are also used for normal and arrhythmia beat classification. The classification performance for ECG beats obtained from the compressed ECG data is good. It denotes the better diagnostic quality of the compressed ECG data.
A Frequency Discrimination Technique for SSVEP-Based BCIs Using Common Feature Analysis and Support Vector Machine
Authors: Verma Akshat , Shukla Praveen Kumar , Verma Shrish , Chaurasiya Rahul Kumar
Published: June 2022

BCI is a communication option that has come up as a very radical tool for those who are suffering from neuromuscular disorders. BCI provide a way for the brain to communicate with the outer world without the use of any outlying nerves. Steady state visually evoked potentials (SSVEP) are frequency-specific responses to visual stimuli. These are extensively used with EEG signals. This research projects an innovative method for recognition of SSVEP-based BCIs. The method establishes a processing pipeline where an IIR Butterworth filter is implemented which filters the signals that are further decomposed into waveforms also known as wavelets. Along with the wavelet decomposition, common feature analysis (CFA), canonical correlation analysis (CCA), and MCCA are used to extract features. The best result is obtained from DWT-CFA. The finest classification results are obtained from the RBF kernel-based SVM classifier. The best overall mean accuracy of 94.78% is obtained using DWT-CFA as the feature extraction technique and employing RBF kernel-based SVM as the classifier.
Empirical Wavelet Transform-Based Framework for Diagnosis of Epilepsy Using EEG Signals
Authors: Khan Sibghatullah I. , Pachori Ram Bilas
Published: June 2022

In the chapter, a novel yet simple method for classifying EEG signals associated with normal and epileptic seizure categories has been proposed. The proposed method is based on empirical wavelet transform (EWT). The non-stationarity in the EEG signal has been captured using EWT, and subsequently, the common minimum number of modes have been determined for each EEG signal. Features based on amplitude envelopes of EEG signals have been computed. The Kruskal-Wallis statistical test has been used to confirm the discrimination ability of feature space. For classification, various classifiers, namely K-nearest neighbor (KNN), support vector machine (SVM), and decision tree (DT), have been used. The maximum classification accuracy of 98.67% is achieved with the K-nearest neighbor (KNN) classifier. The proposed approach has utilized only two features, which makes the proposed approach simpler. The proposed approach thus can be used in real-time applications.
Characteristics of Metallographic Preparation of Heat Exchanger Austenitic Stainless Steels
Authors: Pilsová Lucie , Mára Vladimír , Svobodová Marie , Horváth Jakub
Published: June 2022

This paper describes a metallographic preparation of the heat-exchanger austenitic stainless steels, i.e., SUPER 304H, HR3C and Sanicro 25. The as-received materials delivered after the solution annealing are very resistant to the chemical etchants. Therefore, it is more efficient to optimize the parameters of the electrolytic etching in the acidic or basic electrolytes. After the materials’ operation under elevated temperatures (600–750 °C), the microstructure is easier to etch due to the reduction of corrosion resistance. For the following analyses, it is necessary to think of the etching purpose in advance. For the grain size determination, it is sufficient to use electrolytic etching in the oxalic acid solution or chemical swabbing in the combination of 15 ml HCl, 10 ml acetic acid and 5 ml HNO3. For the image analysis of the intermetallics, the previous methods can be too invasive and give skewed results. In many cases, this leads to the overetching and thus removal of the observed particles (intermetallics, carbides, etc.). It is suitable to use selective etching methods or only polishing for a more precise evaluation, e.g., electron microscopy.
Efficient Toolpath Generation Method for High-Quality and High-Accuracy Machining of Curved Surfaces
Authors: Dat Than Trong Khanh , Phong Vo Ngoc , Phuc Tran Thien
Published: June 2022

Currently, there is no function in commercial CAM systems to generate optimal quality machining for curved surfaces. In computer-aided manufacturing (CAM) systems, the toolpath (cutter location data) is derived as an approximately straight-line segment based on a plane approximation surface instead of a free-form surface from the designed shape. Due to this approximation, machining accuracy and quality are decreased, especially in the region with characteristic lines like in an outer automobile covering part. This paper presents an algorithm procedure for toolpath generation to process complex parts with characteristic curves with high-quality and high-accuracy machining by dividing the surface into different regions, the region where machining accuracy is not required as a plane approximation surface and the remaining region where accuracy is required as free-form surfaces. The proposed method was confirmed by machining experiments that actual machining realized high machining quality and accuracy compared to the conventional CAM system.
Effect of Phosphonium-Based Ionic Liquid Content in Curing Epoxy Resin/Carbon Nanotubes Systems
Authors: dos Santos Danielle Ferreira , Soare Bluma Guenther
Published: June 2022

The effect of varying the content of the ionic liquid based on phosphonium, tributyl (ethyl)-phosphonium diethylphosphate, was studied acting with a dual role as a curing and dispersing agent to obtain multiwalled carbon nanotube nanocomposites (MWCNT) dispersed in epoxy resin (ER). The effect of this ionic liquid in the mixtures was evaluated to obtain a better dispersion of the charge in the epoxy matrix, and consequently the impact on the curing of the nanocomposites. The effectiveness of the dispersion was evaluated morphologically by scanning electron microscopy (SEM). The non-covalent functionalization of nanotube nanocomposites (CNT) with IL resulted in better reinforcing effect and higher conductivity, as well as the use of high-speed speed mixer combined with acetone, culminated in better mixing and processing conditions. Under these conditions, the composite showed high electrical conductivity and good dynamic-mechanical properties. The systems with 10phr of the ionic liquid showed the highest of ΔH (heat of reaction), and these values ​​can be attributed to the better adjustment of the stoichiometry, favoring the crosslinking of the resin. the systems with 10phr of the ionic liquid showed the highest of ΔH (heat of reaction), and these values ​​can be attributed to the better adjustment of the stoichiometry, favoring the crosslinking of the resin. However, the systems prepared with 30phr of ionic liquid showed lower values ​​of ΔH, possibly due to its excess in the mixture, culminating in the imbalance of resin/hardener stoichiometry. This can be seen in the scanning electron microscopy (SEM), whose sample cured with 30phr showed cracks, due to the excess of the crosslinking agent causing incomplete curing, making the material more fragile.
Potential Al-Fe Cast Alloys for Motor Applications in Electric Vehicles: An Overview
Authors: Liu Su Feng , Hu Anita , Hu Henry , Nie Xueyuan , Kar N.C.
Published: June 2022

Iron is the main component of the earth's core, the most abundant element on the earth (about 35%), and it is relatively high in the sun and other stars. Also, it is a common and cheap metal in the manufacturing industry. Recently, with the rapid development of electric vehicles, more and more automotive companies are willing to develop new lightweight material for electric motors used in electrical vehicles. The iron–containing aluminum alloys can be considered as a good candidate, due to its great strength and electricity performance. This review describes various properties of aluminum-iron alloys including mechanical properties and electrical conductivities, as well their relation to the Fe contents. Also, metallurgical aspects of aluminum-iron alloys, including phase diagrams, equilibrium and non-equilibriun solidification, microstructure development, and castability. The further research and development work are outlined in terms of developing aluminum-iron alloys for some potential and value-added automotive applications.
Modalities and Requirements Regarding the Qualification and Certification of Welding Personnel for Thermoplastic Materials
Authors: Cocard Marius
Published: June 2022

The paper presents the main aspects regarding the qualification and certification of welders for thermoplastic materials according to the requirements of European standards. In this sense, the requirements regarding the assessment of the knowledge and practical skills of the personnel who carry out activities for the realization of welded joints using different types of processes, materials and semi-finished products are presented. Development and diversification of the field of thermoplastic materials with industrial applications, requires a rigorous personnel verification, in order to ensure the quality required for products made by welding.
Biocompatibility and Mechanical Properties Evaluation of Ti-6Al-4V Lattice Structures with Varying Porosities
Authors: Wang Niyou , Dheen S. Thameem , Fuh Jerry Ying Hsi , Anantharajan Senthil Kumar
Published: June 2022

Ti-6Al-4V is one of the popular choices for biomedical implants due to multiple advantages, such as corrosion resistance, high strength-to-weight ratio, biocompatibility, lightweight, durability, and osseointegration properties. However, Young’s modulus (E) of Ti-6Al-4V is much higher than the E of natural human bone, which may lead to stress shielding. Therefore, it is critical that we need to fabricate the implant with specific mechanical properties that can match the patient’s existing bone. With the advent of 3D printing, we now can design porous structures with the most suitable E through adjusting porosity to suit individual needs. Porous structures with various porosities were manufactured by selective laser melting (SLM). Mechanical testing was performed to show that the E of the printed samples was related to the porosities only. Based on the simulated and actual results, there are still many areas that can be improved to enhance the quality of the printed structures. Indirect cytotoxicity tests were performed to verify the biocompatibility of the porous structures.
COMSOL Simulation of Heat Distribution in InGaN Solar Cells: Coupled Optical-Electrical-Thermal 3-D Analysis
Authors: Ammar Sahar , Belghouthi Rabeb , Aoun Nejiba , Aillerie Michel , Ben El Hadj Rhouma Mounir
Published: June 2022

Thermal distribution in solar cells has been rarely investigated despite it significant impact on the performance. The current contribution presents a COMSOL Multiphysics 3-D analysis of the electrical and optical photogeneration properties in relation with the heat distribution in InGaN solar cell. For this simulation, we have coupled the “Semiconductor Module”, the “Heat Transfer Module for Solids,” and the “Wave Optics Module” allowing us to calculate the Shockley–Read–Hall heating, the total heat flux, the Joule heating the carrier’s concentration, the electric field, and the temperature dissipation in the InGaN solar cell structure. Despite the fact that the achievements of InGaN solar cells are still mostly at the state of laboratory studies, the current contribution presenting original results on coupled phenomena occurring in the cells makes it possible to highlight new possible guidelines for an improve of their efficiency.
A Study on Effects of Temperature and Velocity of Drying Air on Flavonoids Extraction Rate of Houttuynia Cordata Thunb
Authors: Nhut Le Minh , Sang Bui Duc
Published: June 2022

The main aim of this paper is to present experimental results concerning the effects of the temperature and velocity of drying air on the flavonoids extraction rate of houttuynia cordata thunb by heat pump dryer under real weather conditions at Ho Chi Minh City, Vietnam. Drying experiments were carried out at the drying air temperature of 35, 40, 45 and 50 °C, and drying air velocity of 1.0, 1.5, 2.0 and 2.5 m/s, respectively. The experimental results showed that the highest amount of flavonoid extraction rate of the houttuynia cordata thunb was 87.525 mg/g corresponding to the drying air temperature of 45 °C and drying air velocity of 2.0 m/s. The aim also involves analyzing the effects of the drying temperature and drying velocity on the drying time, moisture content, and the specific moisture extraction rate (SMER).
Damage and Fracture in Creep of a Cast B1914 Superalloy
Authors: Kvapilová Marie , Král Petr , Dvořák Jiří , Hrbáček Karel , Kuchařová Květa , Sklenička Václav
Published: June 2022

Damage and fracture processes in high temperature creep of an investment cast B1914 Ni-based superalloy with the increased amount of boron to 0.08wt.% for high temperature applications were analysed. Constant load creep tests in tension were conducted at temperatures from 800 to under applied stress ranging from 150 to 700 MPa. The microstructure of fractured specimens was investigated by scanning electron microscope Tescan equipped with an electron-back scatter diffraction. Microstructure investigation showed that the microstructure of the B1941 superalloy consists of a gamma (γ) phase with a dendritic structure and gamma prime (γ ́) phase with a cuboidal shape. Precipitates of γ ́and a lamellar eutectic, composed of γ/(Mo,Cr,Ni)3B2, were identified in the interdendritic region. Creep damage and fracture are closely connected with decohesion of the interface between M3B2 boride and matrix.
In Vitro Corrosion Study of Selected Laser Melted WE43 Magnesium Alloy in Hank ́s Balanced Salt Solution
Authors: Bednaříková Vendula , Klakurková Lenka , Remešová Michaela , Horynová Miroslava , Suchý Jan , Paloušek David , Čelko Ladislav
Published: June 2022

Magnesium (Mg) and its alloys have been intensively investigated as potential biocompatible materials with appropriate structural, mechanical and corrosion properties for preferable orthopedic applications. Selective Laser Melting (SLM) technique was developed for the fabrication of three-dimensional components with high structural integrity at a low cost and is compatible with various materials, including biocompatible magnesium alloys. In this study, WE43 magnesium alloy samples produced by SLM technique were examined by in vitro static test in Hank's balanced salt solution (HBSS) under physiological temperature conditions for six days. A hydrogen evolution method for the estimation of the corrosion rate was used. The phase composition of samples before and after the immersion test was investigated by X-ray diffraction (XRD). The surface morphology and chemical composition of the initial material and tested samples were characterized by scanning electron microscope (SEM) equipped with energy dispersive X-ray spectroscopy (EDX).
Synthesis and Characterization of Novel Nickel Coated Carbon Fibre Rod Reinforced Aluminium Metal Matrix Composite Material for using in Automobile Application
Authors: Sandhanshiv Rahul D. , Patel Dilip M.
Published: June 2022

A carbon fibre (CF) in the form of a rod (continuous fibre) was used as reinforcement due to its superior strength and modulus properties. Carbon fibre rod reinforced aluminium 6061 alloy metal matrix composite material was synthesized using the stir casting liquid metallurgy route. Aluminium based metal matrix composite materials are light in weight. Very few researchers were worked on carbon fibre rod reinforced metal matrix composites (MMC). Electroless nickel deposition on carbon fibre rods (2mm and 3mm diameter) were carried out for improvement in wettability. On carbon fibre rods, the effectiveness of electroless nickel coating was validated using SEM (scanning electron microscopy) and EDAX (Energy Dispersive X-Ray Spectroscopy) analysis. A further coating thickness of nickel was improved using nickel electroplating. In a cast iron mould, nickel-coated carbon fibre rods were arranged in a circular pattern. Completely degassed molten aluminium 6061 alloy was poured in cast iron mould at 600-700 °C. The enhancement in Tribological and mechanical properties is always a prerequisite for technological advancement in automobile sector. From synthesized composites (11.11% Vol. CF and 25% Vol. CF reinforcement) specimen were prepared for density tests, bulk and microhardness tests, friction and wear tests. Synthesized composite has low density, increased bulk and microhardness, low coefficient of friction and reduced wear rate in comparison with aluminium 6061 alloy. Keywords: Carbon Fibre (CF) rod, MMC, Nickel coating, Casting, Mechanical, Tribological
Optimization of Dilution Parameters Using Mathematical Modeling in MIG Welded Stainless Steel 409L Plates
Authors: Narang Rishabh , Maheshwari Vibhu , Khanna Pradeep
Published: June 2022

This paper presents an experimental study on various input parameters to optimize the dilution percentage of stainless steel 409L plates by using metal inert gas welding (MIG). Dilution represents the proportion of base material melted to the entire cross-sectional area of the fusion zone. A mathematical equation was generated using the design matrix to obtain an optimized parametric combination of input parameters. Further, the adequacy and the significance of the generated equation were verified using F-test & T-test, respectively. In the graphical analysis performed using response surface methodology (RSM) it was inferred “Wire feed rate”, “welding speed” and “voltage” came out to as input parameter which showed a profound effect on dilution. The results show that the proposed method, mathematically agrees well with the definition of weld dilution. It was inferred increasing dilution to a level higher than the critical value; the weld can be concentrated as well when the filler wire is rich in the same composition as the substrate does.
Production of Aluminum Alloy Sealing Part by Semi Solid Die Casting Method
Authors: Ali Yüsein , Akdoğan Anıl , Vanlı Ali Serdar
Published: June 2022

High Pressure Die Casting (HPDC) is a widely preferred process for the production of non-ferrous metals with low melting temperatures. It is particularly suitable for close-to-finish and high-volume production of relatively complex shaped parts. Aluminum-Silicon-Copper alloys, which are frequently preferred in this method, find themselves in many sectors ranging from automotive to aviation. With the developing technology, the usage of High Pressure Die Casting technology has increased significantly, produced part types and the number of parts produced on an annual basis has reached remarkable amounts with the shortening of cycle times. In this study, a supra-eutectic silicon valued Aluminum-Silicon-Copper alloy was produced by gas-induced semi-solid die casting method using a cold chamber high pressure die casting machine. The study observed that many casting problems, especially shrinkage gaps and gas porosity, were overcome, while the microstructure of the parts on which the gas induced semi-solid die casting method was applied was preserved. In addition, energy saving is achieved by lowering the temperature of the holding pot, and thermal fatigue cracks that will occur in the mold in the long-term depending on the temperature difference will be delayed and the mold life will increase.
UN CONSERVATORISMO “SCETTICO”. NOTE SU ELIE KEDOURIE
Authors: Mingardi Alberto
Published: June 2022

Non disponibile.
Liberalismo inclusivo. Un futuro possibile per il nostro angolo di mondo
Authors: Targetti Lenti Renata
Published: June 2022

Non disponibile.
La situazione della scienza giuridica europea
Authors: Naso Pierpaolo
Published: June 2022

Non disponibile.
Michael Novak / Douglass C. North / Anthony de Jasay
Authors: Iannello Nicola
Published: June 2022

Non disponibile.
Insulin resistance and other risk factors of cardiovascular disease amongst women with abnormal uterine bleeding
Authors: Salcedo Andrea C. , Shehata Hannah , Berry Abigail , Riba Christopher
Published: June 2022

Background: Studies indicate the presence of cardiovascular disease risk amongst patients with uterine fibroids and polycystic ovarian syndrome.Aim: The researchers aimed to examine the prevalence of cardiovascular disease risk factors and independent predictors of insulin resistance (IR) amongst women with abnormal uterine bleeding (AUB).Methods: This observational study examined 77 premenopausal subjects with AUB. Their medical history, body mass index (BMI), waist–hip ratio (WHR), fasting insulin (FI), haemoglobin A1c, creatinine and lipids were evaluated. Subjects were subdivided using insulin levels and compared. Insulin resistance was defined at two FI levels: 10 μU/mL and 15 μU/mL.Results: A total of 91% of participants had smoking history, 62% had a WHR 0.80, 45% were obese and most had dyslipidaemia. In all, 38% – 66% were insulin resistant, depending on cut-off used. At FI 10 μU/mL, subjects were significantly more likely to have a WHR 0.8, be obese and have low HDL. At FI 15 μU/mL, subjects were significantly more likely to have low HDL, elevated triglycerides, a WHR 0.8 and be obese. Univariate analysis showed significant associations between IR in AUB and BMI, WHR and HDL for both FI cut-offs. Multivariate analysis using the lower FI cut-off revealed BMI and WHR were significant independent predictors of IR in AUB.Conclusion: This study reveals the prevalence of IR (66%) and other predictors of cardiovascular disease are greater in AUB in this population than the general US population. Body mass index and WHR are independent predictors of IR in AUB. Low HDL, elevated triglycerides and ethnicity are also significantly associated with IR in AUB depending on the definition used.
Social media and health – Is it all good, bad or just ugly?
Authors: Govender Indiran
Published: June 2022

No abstract available.
Critical soft skills for information and knowledge management practitioners in the fourth industrial revolution
Authors: Mabe Kagiso , Bwalya Kelvin J.
Published: June 2022

Background: Many technology jurisdictions have peddled the narrative that the key determinant for an innovative and sustainable fourth industrial revolution (4IR) environment is possessing hard technical skills. Hard technical skills are important to design the actual 4IR-based applications. Postmodernity demands that appropriate soft skills complement the hard skills to effectively integrate technology into various socio-economic value chains. In fact, soft skills are slowly becoming one of the critical enablers to harness the promise of the 4IR.Objectives: This research article aimed to critically understand the soft skills considered to be essential in the South African context by different information and knowledge management (IKM) practitioners. The aims and objectives of the study were to fill the gap where other disciplines have specified soft skills whilst IKM does not. This study looked to identify soft skills to allow IKM practitioners an opportunity to identify and develop these skills.Method: This research was designed based on the Delphi study principles and further used a systematic and targeted literature review to allow the researchers to make logical conclusions deductively. The authors followed a multimethod approach and analysed data using content analysis.Results: The study results have demonstrated that soft skills are considered significantly more important than hard skills in South Africa. The study identified 57 total skills. However, only 17 had consensus from experts.Conclusion: This study provides insights into the critical success skills needed to harness the socio-economics brought about by the 4IR. Further studies are required in different contextual settings to understand the global skills pertinent to the 4IR.
Laparoscopic Nephroureterectomy for Dysplastic Kidneys with Ectopic Ureters Opening Inside the Vagina
Authors: Hettiarachchi Mathula , Thalgahagoda Shenal
Published: June 2022

Urinary incontinence in girls could be due to ectopic ureteral insertion inside the vagina, a condition that is difficult to diagnose. In these patients, the urinary tract may be duplicated or single and be associated with a dysplastic kidney. We report two girls with dribbling of urine due to single ectopic ureteral insertion into the vagina. Computerised tomography urogram, retrograde contrast study and isotope scan revealed poorly functioning ectopic kidney. Hence, both patients underwent laparoscopic nephroureterectomy which led to the resolution of symptoms.
An infant with Cholestasis and Refractory Electrolyte Abnormalities
Authors: Alsubaie Hadel , Kattan Yara S. , Alshareef Turki A. , Aldekhail Wajeeh , Almaiman Weiam
Published: June 2022

Arthrogryposis-renal dysfunction-cholestasis (ARC) is a rare multisystem disorder caused by mutations in the VPS33B gene, which in turn lead to a premature truncation of the gene product. This autosomal recessive disease has variations in phenotype. We report an infant girl who had severe presentation in the form of dysmorphic features, abnormal hearing assessment and refractory electrolytes disturbances. She was a product of consanguineous marriage with family history of similar presentation. The child passed away at age of 6 months due to aspiration pneumonia.
Utility of Renal Resistive Index in Children with Nephrotic Syndrome
Authors: Swarnim Swarnim , Naj Mohsina , Mantan Mukta , Garg Anju
Published: June 2022

Background:

Renal resistive index (RRI) is one of the Doppler parameters that provide information about arterial impedance. While its utility has been explored in chronic kidney disease and obstructive uropathy, its role in glomerular diseases remains less defined.

Aim:

This study aimed to measure RRI in children (6–18 years) with nephrotic syndrome, both steroid sensitive (SSNS) and steroid resistant (SRNS), currently in remission.

Setting and Design:

This cross-sectional study was done over 1 year at a tertiary care teaching hospital from March 2017 to March 2018.

Methods:

Renal Doppler ultrasound was done and RRI was measured at the main renal, arcuate, and interlobar arteries for both the kidneys during disease remission. Detailed information of disease type, biopsy, and therapy was recorded. Baseline biochemical investigations were done to confirm disease remission.

Results:

Fifty patients (25 each with SSNS and SRNS) were enrolled; the mean age was 12.6 years. The mean RRI at the interlobar and arcuate arteries was elevated in SRNS in all three poles of both the kidneys as compared to the SSNS with a significant difference at midpole (P = 0.04). RRI values were higher in children having focal segmental glomerulosclerosis (FSGS) compared to those with minimal change disease. The percentage of patients having an RRI value >0.6 was significantly higher in those who had received cyclosporine for >2 years as compared to those who received it for <2 years.

Conclusions:

Doppler RRI values were elevated for patients with SRNS compared to SSNS; changes were significant at the midpole of both kidneys. Children with FSGS and those on calcineurin inhibitors for more than 2 years are more likely to have higher RRI values.
Does the Finding of Horseshoe Kidney in Idiopathic Nephrotic Syndrome Foresee Prognosis or is it a Co-incidental Finding?
Authors: Alshammasi Walaa Abbas , Alqahtani Fakherah , Obaidi Zainab , Alsadeq Duaa , Bargawi Abeer , Aldajani Ali
Published: June 2022

A 6-year-old Yemini boy presented with nephrotic range proteinuria, hypoalbuminemia, edema, and hyperlipidemia, leading to a diagnosis of idiopathic nephrotic syndrome. Ultrasonography incidentally revealed a horseshoe kidney. While previous reports indicate the presence of congenital anomalies of the kidneys and urinary tract to be a poor predictor of remission in nephrotic syndrome, the present case responded to corticosteroids followed by sustained remission.
Management of Severe Acute Kidney Injury
Authors: Krishnasamy Sudarsan , Krishnamurthy Sriram
Published: June 2022

Acute kidney injury (AKI) is encountered in approximately one-fourth of children admitted to the intensive care units (ICUs). As AKI is known to prolong ICU stay as well as increase the overall morbidity and mortality, it is important to identify it timely and take appropriate measures to curtail further injury. Infections continue to be the most common cause in developing countries. While pneumonia, diarrhea, and tropical infections such as dengue, malaria, scrub typhus, and leptospirosis are major causes of AKI in children; glomerular diseases, systemic disorders, envenomations, and drugs also account for a major proportion of AKI in low and low-middle income countries. Fluid overload is associated with adverse outcomes in multiple studies; hence proper assessment of volume status is vital. Novel prognostic markers such as renal angina index and furosemide stress test are increasingly being applied in routine clinical care. The current guidelines recommend against the usage of furosemide for the prevention and management of AKI, except in a situation of fluid overload. Kidney replacement therapy (KRT) should be initiated promptly in AKI when indicated. The timing of initiation of KRT in AKI continues to be debatable and has attracted considerable research. While peritoneal dialysis continues to be the modality most often used in infants and young children, continuous KRT and sustained low-efficiency dialysis are used in hemodynamically unstable patients. Timely identification and management of the various complications reduce mortality. Cutting-edge multinational trials over the past decade have significantly impacted our understanding in managing this complex disorder.
Oral health status and treatment needs among Group D workers of four government hospitals in Bengaluru
Authors: Sangeeta T. , Kumar Y. S. Prasanna
Published: June 2022

Aim and Objectives of the Study:

The aim of the study was to assess the oral health status and treatment needs among Group D workers of four government hospitals in Bengaluru and the objectives of the study were to assess the prevalence of dental caries, periodontal health status, oral mucosal lesions, and treatment needs and to know the possible relationship between low socioeconomic status and this particular occupation with oral health status.

Materials and Methodology:

A total of 800 Group D workers were examined according to the WHO Basic Oral Health Survey Assessment Form 1997, and the required data were collected in a prepared format consisting of sociodemographic details, habits, oral hygiene practices, and few questions to assess their knowledge and awareness. The oral cavity of the workers was examined using CPI probe and mouth mirror plane.

Results:

About 283 (35.4%) workers had one or the other forms of oral mucosal lesions of these, majority (102; 12.8%) had Chewer's mucosa, 67 (8.4%) had smoker's melanosis, 58 (7.3%) had leukedema, 27 (3.4%) had leukoplakia, 17 (2.1%) had oral submucous fibrosis, 8 (1%) had smoker's palate, and 2 (0.3%) had lichen planus.

Conclusion:

The present study concludes that there is a strong relationship between poor oral health status and higher treatment needs with the low social class, low educational levels, and occupation.
Lateral pedicle graft – A predictable treatment option for isolated gingival recession
Authors: Kujur Shirish Kumar , Gupta Vineeta , Sreeraj V. S. , Anuraj K. R. , Dahiya Sheetal
Published: June 2022

Marginal gingival recession is a typical source of worry, especially when it occurs in the anterior teeth as a result of functional and esthetic issues. Recession can cause esthetic degeneration, dentin hypersensitivity, and the inability to undertake regular oral hygiene practices. Gingival recession problems have been treated with a variety of surgical procedures. This article discusses a case where the lateral pedicle technique was used to successfully cover the root of a single tooth. The soft tissue next to the recession is positioned over the defect in this approach. This resulted in a periodontium that was both esthetically and functionally healthy, as well as positive patient acceptability. A clinically substantial level of root coverage was achieved as a result of this operation.