bluuebunny/crossref_metadata_2025 huggingface dataset:
Adherence of Umm Al-Qura University Dental Students to Infection Control Guidelines: A Four Year – Auditing Report
Authors: Bukhari Omair , Ahmed Ayman , Afifi Ibtesam
Published: June 2020

BACKGROUND: Infection control auditing is an objective quality improvement process that evaluates current practice against already available standards and guidelines.
AIM: The aim of the study was to assess the adherence of Umm Al-Qura University dental students to infection control guidelines by 4 years’ clinical auditing.
MATERIALS AND METHODS: A cross-sectional observational study of audit checklists (n = 40725) at Dental Teaching Hospital, Umm Al-Qura University, throughout 4 academic years (2015–2018) was performed. Checklists item, total category, and overall adherence percentages were calculated based on recorded observations. The difference in adherence and violations was assessed using generalized estimating equations with the identity logit and an autoregressive correlation matrix.
RESULTS: Overall adherence to all checklist categories was high except for 10–45% got out of the cubicle with used gloves and 15–60% not probably wore mask outside the cubicle. Overall violations among females were highly statistically significant lower than males (OR: 0.926, p < 0.01) and 4th grade were statistically significant lower than among 6th grade (OR: 0.932, p < 0.05) while no statistically significant difference in overall violation among 5th grade in comparison to 6th grade. However, along the 4 years of the study, statistically significant difference in overall violations was observed.
CONCLUSION: Adherence of Umm Al-Qura University dental students to infection control guidelines in the past 4 years remained consistently high except for attitude in the clinic station outside the cubicle which improved along study years. Our results highlight the importance of continuous monitoring through clinical audits together with educational programs and counseling with students violating infection control policies to make corrective actions.
L’air, espace commun et espace contesté
Authors: de Rancourt Luc
Published: June 2020

L’air, un espace commun facteur de prospérité. Le secteur du transport aérien connait une explosion sans précédent. En contribuant directe­ment au développement des échanges de biens, de capitaux, de technologies et d’idées, il connecte les populations et les économies. C’est un lien vital pour le tourisme et le commerce mondial dont il représente 35 % en valeur. Mais l’air est également un espace vulnérable qu’il faut d’autant mieux protéger que la complexité et la diversité du secteur aérien est porteuse de failles potentielles nombreuses. La sureté aérienne occupe donc une place majeure dans la politi­que gouvernementale aussi bien dans le cadre de la lutte contre le terrorisme que celui visant à faire respecter notre souveraineté. Cette politique se fonde sur la Posture permanente de sureté aérienne qui figure au rang des missions prioritaires des armées. Enfin, l’air un espace contesté dont il faut garantir l’accès. Jusqu’à présent, les puissances occidentales jouissaient d’une supré­matie incontestée. Cette situation change cependant à la faveur de nombreuses évolutions technologiques et géopolitiques. Le rôle principal de l’armée de l’air consiste à assurer le contrôle des airs pour garantir aussi bien notre liberté de manœuvre militaire et diplomatique que pour permettre la poursuite de notre prospérité économique. Le maintien de la supériorité aérienne reste la condition sine qua non de notre indépendance.
L’espace extra-atmosphérique : un espace commun en voie de privatisation ?
Authors: Pasco Xavier
Published: June 2020

L’espace extra-atmosphérique définit un domaine très parti­culier, tant du point de vue physique que du point de vue de ses usages. Son caractère global, éminemment collectif et partagé, spécificité consacrée par le droit international, font de l’espace l’un des meilleurs candidats au titre « d’espace commun ». Pour autant, l’espace n’est pas exempt de rapports de force à caractère militaire, industriel ou commercial. Pendant les décennies de guerre froide, l’affrontement bipolaire avait cependant contribué à sanctuariser l’espace. Aucune des deux grandes puissances n’avait alors intérêt à désta­biliser l’équilibre spatial, élément crucial de l’équilibre stratégique plus large. Les temps ont changé et les années récentes ont montré un intérêt militaire renouvelé pour utiliser l’espace. L’évolution des technologies et l’irruption de nouveaux acteurs confèrent aussi une dynamique nouvelle à l’activité spatiale qui met aujourd’hui en débat le statut de l’espace extra-atmosphérique.
Le cyberespace et les mutations de l’espace stratégique
Authors: Cattaruzza Amaël
Published: June 2020

Plusieurs études récentes rattachent la réflexion stratégique autour du cyberespace à celles plus générales concernant les « espaces communs ». Or, notre approche de l’espace numérique nous amène à mettre en doute cette analyse, puisqu’il n’est pas non-approprié mais multi-approprié. En ce sens, le domaine numérique fait l’objet d’une appropriation par une multi­plicité d’acteurs, étatiques et non-étatiques, placés ici sur des plans horizon­taux ou parallèles. Les hiérarchies traditionnelles s’en trouvent profondément bouleversées, ce qui a nécessairement un impact dans l’ensemble des autres domaines stratégiques. D’où la nécessité pour la pensée stratégique d’adopter une approche globale du cyberespace (politique, géopolitique, juridique, mais aussi sociologique, anthropologique), qui ne se cantonne pas à une analyse strictement technique.
The origin of cultivated buckwheat in Mankang district of the Sanjiang area of Eastern Tibet and its diffusion to India and the Himalayan hills / Izvor gojene ajde na območju distrikta Mankang območja Sanjiang Vzhodnega Tibeta in razširitev v Indijo ...
Authors: Ohnishi Ohmi
Published: June 2020

Natural populations of the wild ancestor of cultivated common buckwheat were searched and collected, starting from its discovery in1990 and finishing the collections in 2005. Among the collections, the samples Zhuka, Xihe from Mankang district of Tibet are most closely related to cultivated common buckwheat. On the other hand, cultivated populations of common buckwheat in Zhouba, Zhubalong both from Mankang district are most closely related with the wild ancestor of common buckwheat. This leads to the hypothesis on the origin of cultivated buckwheat in Mankang district in the Sanjiang area. The diffusion route from the original birthplace to India and the Himalayan hills is proposed. Several characteristics of Indian and Himalayan common buckwheat are discussed. A main conclusion of the discussion is that European buckwheat is not of Indian origin nor of the Himalayan origin. It probably came from the northern China through the Silk Road.

Key words: buckwheat, wild ancestor, origin, diffusion, India, Himalaya, short day plant

 

Izvleček

Iskali in zbirali so naravne populacije divjega prednika gojene navadne ajde, začeli so leta 1990 in zaključili 2005. Med zbranimi vzorci je bil vzorec Zhuka, Xihe iz Mankanga, Tibet, najbolj soroden gojeni navadni ajdi. Po drugi strani, vzorca gojenih ajd iz Zhouba in Zhubalonga, oboje iz Mankanga, so najbolj sorodni divjemu predniku navadne ajde. Na osnovi tega lahko oblikujemo hipotezo o izvoru  gojene ajde v  Mankangu na območju Sanjianga. Pot širjenja od prvotnega izvora v Indijo in na območja gorovja Himalaje je predlagana v tej razpravi. Avtor opisuje lastnosti navadne ajde v Indiji in na območju Himalaje. Glavni zaključek je, da ajda v Evropi ne izvira iz Indije ali z območja Himalaje. Verjetno je v Evropo prišla iz Severne Kitajske po Svilni poti. 

Ključne besede: ajda, divji prednik, izvor, razširjanje, Indija, Himalaja, rastlina kratkega dne
Las soluciones constructivas en la vivienda durante el franquismo: el caso de la vivienda ferroviaria
Authors: Martínez-Corral A. , Cuéllar D.
Published: June 2020

La construcción de vivienda ferroviaria durante el franquismo, primero por parte de RENFE y luego a través de las cooperativas de ferroviarios, fue muy significativa totalizando unas veinte mil viviendas en el periodo 1945-1975. Al tratarse de viviendas promovidas por una empresa pública del franquismo se observa un condicionamiento particular en la tipología, la materialidad y la construcción; no sólo debido a la imposición de la ideología del Régimen sino también a las rígidas normativas y a los problemas de suministro y restricción de los materiales. El gran número de vivienda construida permitió la generalización de soluciones constructivas ya obsoletas y ayudó a consolidar a la mal denominada “construcción tradicional”, alejándose de toda la innovación y experimentación previas en un patrimonio todavía en uso donde las arcaicas soluciones constructivas empleadas dificultan su adaptación sostenible tanto a las nuevas formas de habitar como a las actuales exigencias normativas.
A Survey on Blood Image Diseases Detection Using Deep Learning
Authors: Loey Mohamed , Naman Mukdad Rasheed , Zayed Hala Helmy
Published: June 2020

Blood disease detection and diagnosis using blood cells images is an interesting and active research area in both the computer and medical fields. There are many techniques developed to examine blood samples to detect leukemia disease, these techniques are the traditional techniques and the deep learning (DL) technique. This article presents a survey on the different traditional techniques and DL approaches that have been employed in blood disease diagnosis based on blood cells images and to compare between the two approaches in quality of assessment, accuracy, cost and speed. This article covers 19 studies, 11 of these studies were in traditional techniques which used image processing and machine learning (ML) algorithms such as K-means, K-nearest neighbor (KNN), Naïve Bayes, Support Vector Machine (SVM), and 8 studies in advanced techniques which used DL, particularly Convolutional Neural Networks (CNNs) which is the most widely used in the field of blood image diseases detection since it is highly accurate, fast, and has the least cost. In addition, it analyzes a number of recent works that have been introduced in the field including the size of the dataset, the used methodologies, the obtained results, etc. Finally, based on the conducted study, it can be concluded that the proposed system CNN was achieving huge successes in the field whether regarding features extraction or classification task, time, accuracy, and had a lower cost in the detection of leukemia diseases.
Tracking How a Change in a Telecom Service Affects Its Customers Using Sentiment Analysis and Personality Insight
Authors: Adl Ammar , Elfergany Abdelsadeq Khamis
Published: June 2020

Tracking the effect of change a telecom service on customer feeling is an important process for telecom companies. As a result of tangible growth and large competition among telecom companies, customer retention and satisfaction are the most important challenges faced by telecom companies nowadays. Customer retention can be achieved by identifying the feeling of the telecom customers after changing service and take care of the customers by modifying the services that aren't accepted by its customers. Hence, this article was done by using a combination of four stages of: text pre-processing, personality analysis, sentiment analysis, and a chatbot system. This article shows the effect of using the personality traits, agreeableness and emotional range, with sentiment analysis to help reaching a full description of customer feel. Combining the sentiment analysis Naïve Bayes technique in the natural language processing and personality insights pre-learning stage and adding feedback using the obtained results achieves higher accuracy than using the traditional sentiment analysis techniques.
Effect of Surface Modification on Multi-Walled Carbon Nanotubes and their Reinforced Nylon Composites
Authors: Shih Yeng Fong , Kotharangannagari Venkata Krishna , Lin You Ting
Published: June 2020

In this study, a series of nanocomposites were prepared by melt-blending method using Nylon (Nylon12, PA12) and multi-walled carbon nanotubes (MWCNTs) with various contents such as 0.0 wt.%, 0.5 wt.%, 1.0 wt.%, 3.0 wt.%. In order to improve the dispersion of MWCNTs in composites, the MWCNTs were first acid treated by the HNO3 solution to functionalize the carboxylic groups on the surface. Subsequently, this acid treated MWCNTs were reacted with Polyetheramine (Jeffamine® M2070) and Polyethylenimine under mild conditions, respectively, to obtain the chemically modified MWCNTs (M-M2070 and M-PEI). The amide groups formed on these chemically modified MWCNTs will enhance the compatibility of MWCNTs and Nylon. The effects of different modification methods on the thermal properties, mechanical properties and electrical resistance of these Nylon12/MWCNTs composites were investigated. The results showed that M-M2070 and M-PEI dispersed in Nylon12 homogeneously, and can improve the mechanical and thermal properties of the composite materials effectively. The DMA analysis revealed that the storage moduli of nanocomposites were increased with increasing MWCNTs content. Among all, the nanocomposites containing 3wt% of M-M2070 and M-PEI were shown increased storage moduli 48.2% and 29.8%, respectively. TGA analysis showed that pyrolysis temperature of neat Nylon12 was 412.7 °C, and was increased about 43 °C by addition of M-M2070 and 36.7 °C by addition of M-PEI. Moreover, the surface resistance of neat Nylon12 was 1.68×1014 ohm/sq, and was decreased to 1.33×105 and 4.34×106 ohm/sq by addition of 3wt% M-M2070 and M-PEI, respectively. The resistance values of these nanocomposites have achieved the level of static dissipation, and can prevent the harm of static electricity.
Fabrication of Solid Oxide Electrolysis Single Cell Using NiO-YSZ/YSZ/LSM-YSZ via Drop-Coating Method
Authors: Rabo Jennet R. , Cervera Rinlee Butch M.
Published: June 2020

Solid oxide electrolysis cell (SOEC) is a highly efficient and environmentally friendly technology for future hydrogen generation. In this study, electrolyte-supported SOEC single cell was fabricated via a simple and facile drop-coating technique. Thin film electrodes of nickel oxide/yttria stabilized zirconia (NiO-YSZ) cathode and strontium-doped lanthanum manganite/ytrria-stabilized zirconia (LSM-YSZ) anode were deposited onto yttria-stabilized zirconia (YSZ) solid electrolyte substrate. Scanning electron microscopy (SEM) with energy dispersive analysis (EDS) was used to study the microstructural properties of the heat-treated samples and revealed a successful thin film deposition of porous electrodes onto the dense YSZ substrate. XRD patterns showed the desired crystal structure of the deposited electrode thin films. Distinct phases of cubic YSZ and monoclinic LSM were observed for the LSM-YSZ anode while cubic NiO and YSZ phases were observed for the deposited cathode. Electrochemical conductivity of the cell was investigated using electrochemical impedance spectroscopy analysis (EIS) which revealed a total conductivity of about 2.0 mS/cm at 700 °C.
Design and Build of a Remote Control Concrete Boat
Authors: Lee Ming Gin , Kan Yu Cheng , Shih Yeng Fong , Wang You Xiang , Lee Ming Ju
Published: June 2020

The oldest known concrete boat using steel wire mesh covered with sand and cement plaster was a dingy built by Joseph Louis Lambot Southern France in 1848. The boat was patented and featured in the 1855 World's Fair in France. In this study, the concrete boat using fiber wire mesh covered with cement, rice husk, silica fume, steel fiber, glass fiber wire, sand, water and superplasticizer was design and built in the material laboratory at Chaoyang University of Technology. The length, width, depth and thickness of the boat are about 60, 20, 10 and 1.5 cm respectively. The rice husk can absorb water ranging from 8% to 12% of unit weights, and the unit weight of rice husk is about 105 kg/m3. The use of rice husk in concrete at proportions ranging from 15 percent to 30 percent of aggregate (sand) has been discussed and the water cement ratio is 0.5. The rice husk concrete was found to be workable with a slump value of over 100mm. The incorporation of rice husk in concrete resulted in increase water demand and increased strength. Finally, the concrete boat succeeded to pass the floating waterproof qualifications and attend the remote control tests. The buoyancy is equal to 33.52 N and her waterline, where the hull of a boat meets the surface of the water, is approximately 6 cm. The remote control tests were held in 3 consecutive items, first item for speed tests, second item for maneuver tests, and third item for 30 minute field test remote control driving.
Development of Eco-Friendly Flame-Retarded High Density Polyethylene Composites
Authors: Shih Yeng Fong , Tsai Wan Ling , Kotharangannagari Venkata Krishna
Published: June 2020

The use of ammonium polyphosphate (APP) and expanded graphite (EG) as a flame retardant for polymer generally requires a relatively high amount of addition to achieve a flame-retardant effect, and is liable to cause a decrease in strength of the material. Therefore, in this study waste diatomite was used as an eco-friendly flame-retardant for high density polyethylene (HDPE) to reduce the amount of APP and EG and can reach the flame-retardant level. Moreover, the waste diatomite was heat treatment and surface modified by silane coupling agent to improve its compatibility with HDPE. The results show that the tensile strength of the HDPE drops sharply after the addition of the APP and EG. However, replace some of the APP and EG by the modified diatomite can slow down the decline and maintain the basic physical properties of the material. The impact strength of HDPE was also decreased by the addition of APP, EG and untreated diatomite. However, the impact strength of HDPE was increased after adding the surface modified diatomite. It can be seen from the experimental results that the addition of the waste diatomite modified by the silane coupling agent can reduce the usage of the flame retardant such as APP and EG, and increase the strength by increasing the compatibility between the plastic and the inorganic material. Moreover, this eco-friendly formulation can reach the UL-94 HB level, and it can be applied to interior decoration or as building materials in the future. Thus, it can not only recycle the wastes, but also reduce the threat caused by fire.
Compressive Strength Prediction of Quad-Diametral Lattice Structures
Authors: Raz Karel , Chval Zdenek , Sedlacek Frantisek
Published: June 2020

Additive manufacturing is rapidly developing technology in all areas of industry. It is reducing the delivering time of each prototype from the manufacturer to the final user. This paper deals with mechanical properties of lattice structures. They are produced by additive technologies from the plastic material. Lattice structures are special space-filling unit cells, which can fill gaps in parts. They have good ratio between overall weight and strength. Nowadays are these structures commonly used, but their mechanical properties are not well described. This makes the design process difficult. Mechanical compressive test and virtual evaluation by the finite element method was performed. It was done for three different Quad-Diametral structures (Quad-Diametral, Quad-Diametral-Line and Quad-Diametral-Cross). Results from both testing approaches (real measurement and finite element method) are deeply described in this paper. It was shown, that the Quad-Diametral-Cross lattice cell has higher mechanical properties comparing to others. Increasing of the stiffness was 121% only with weight higher by 43%. The plastic material Ultimaker PLA (polyactic acid) was used as reference material in this research.
Relaxation-Compression Resin Transfer Molding under Magnetic Field
Authors: Ouezgan Ahmed , Adima Said , Maziri Aziz , Mallil El Hassan , Echaabi Jamal
Published: June 2020

Relaxation-compression resin transfer molding under magnetic field is a new variant of VARTM (“vacuum assisted resin transfer molding”) process, which uses a flexible magnetic membrane controlled by a magnetic force, in order to govern the relaxation and compression phases by changing the permeability of the fabric preform. Thus permits to the resin to enter easily into the mold and to increase the resin impregnation velocity and the fiber volume fraction. This innovation is based on the application of the TRIZ theory (“the theory of inventive problem solving”), which allows us to answer to the shortcomings and the conflict links exist inside the VARTM processes. The objective of this paper is to present this new process and to study the effect of the current intensity and the separated gap between the flexible magnetic membrane and solenoid on the permeability of the preform.
Study on Preparation and Properties of CNTs/Al2009 Composites by Cryogenic Milling
Authors: He Xiao Lei , He Tian Bing , Tang Peng Jun , Wang Xing Yuan
Published: June 2020

The CNTs/Al2009 composite powders were prepared by cryogenic milling. The CNTs were uniformly dispersed on the surface of Al2009 powders. And then the CNTs/2009Al composites were fabricated by hot extrusion/hot isostatic pressing method. The effects of CNTs content and cryogenic milling process on the dispersion of CNTs in Al2009 matrix, the microstructure of powders and the properties of composites were studied by Scanning electron microscopy, Raman spectroscopy and tensile strength testing at room temperature. The results showed that the dispersion of CNTs was improved with the extension of ball milling time (1h~4h), but the damage degree of CNTs was intensified. In comparison, CNTs had the highest damage rate at the beginning of ball milling. As the milling time increased, the mechanical properties began to increase slightly and then decreased. When the ball milling time was 2h, the mechanical properties reached the highest. Cryogenic milling could achieve good dispersion in the Al2009 matrix for mixed powders with low CNTs content. When the CNTs content increased to 1.0%, a small amount of agglomeration appeared, but for composites, the strengthening effect of CNTs was more dominant. When CNTs were further added, the dispersion was remarkably lowered and the performance was deteriorated. CNTs (1.0wt.%)/Al2009 composites had excellent mechanical properties. The tensile strength reached 560MPa, which was 25% higher than Al2009.
Preparation and Characterization of Silk Fibroin-Based Hybrid Vascular Tissue Engineering Film
Authors: Ming Ping Deng , Xia Chuan Jun , Hu Ya Song , Zhan Cong Cong , Zhou An Duo , Mao He Yi , Huang Xia
Published: June 2020

Patients suffering from cardiovascular disease lack suitable stent. In this study, a new polymeric composite material was prepared by incorporating various concentrations of gamma-glycidoxypropyltrimethoxysilane (GPTMS) into silk fibroin (SF), aiming at achieving a novel composite film with superior mechanical and biological properties, in order to match the requirement of cardiovascular tissue engineering stents. Fourier transform infrared spectroscopy (FTIR) analysis showed that GPTM could promote SF to transform from the original alpha helix and random coil/extension chain conformation to the beta-folded conformation. Tensile experiment indicated tensile strength and breaking elongation of SF/GPTMS hybrid film reach the maximum with 20% GPTMS content. Within a certain range, the water drop contact angle of SF/GPTMS hybrid film is positively correlated with the content of GPTMS. Endothelial cells (ECs) are best grown on hybrid SF/GPTMS hybrid film with 20% GPTMS content.
Progress in the Preparation of Silver Nanometer Antibacterial Material
Authors: Li Ben Jiao , Li Song , Ma Bin Rong , Jing Yong , Zhang Zhe Ming , Li Zhi Jia , Zhao Si Yi
Published: June 2020

Silver inorganic antibacterial agents have been widely used inbiotechnology, bioengineering science, electronics, optics and water treatment because of their strong bactericidal ability, high safety and durable antibacterial properties. In this paper, the preparation methods of silver nanoparticles are reviewed, including physical method, chemical method and biological method, in order to provide a reference for the further development and utilization of silver nano-antibacterial materials.
Effect of Coolant Type on Surface Roughness and RSM Modelling in Single-Point Diamond Turning of RSA443 Optical Aluminum
Authors: Hweju Zvikomborero , Abou-El-Hossein Khaled
Published: June 2020

This paper is a presentation of a comparative study of the effect of water and kerosene coolants on surface finish during ultra-high precision diamond turning (UHPDT) of Rapidly Solidified Aluminium alloy (RSA 443). The percentage relative difference between the coolants’ surface roughness values is denoted by the ΔRaparameter. The accuracy of the Response Surface Method (RSM) in predicting surface roughness of water and kerosene-based results is investigated in this paper. The cutting parameters used in the investigation are cutting speed, feed rate and depth of cut. The Taguchi method was used to design the experiment since it provides relatively fewer experimental runs when compared to classical experimental design methods. Mean Absolute Percentage Error (MAPE) values are used to compare RSM’s surface roughness prediction accuracy on both water and kerosene-based results. It is observed that the surface roughness profiles for either coolant are similar, and the use of water coolant yields smoother surface finishes when compared to the use of kerosene. It is also observed that RSM displays better accuracy in predicting water-based surface roughness.
Application of Neural Network in Predicting Forging Hardness
Authors: Luh Yuan Ping , Tu Chang Hung , Wang Huang Li , Chiu Chien Jung
Published: June 2020

This study used cold forging to produce car components with the desired hardness without using postprocessing methods such as heat treatment, surface blasting, and polishing. Material diameter, mold neck diameter, and hardness of the material after annealing were used as parameters, and nine sets of experimental parameters were obtained using the Taguchi method. Under the premise of high-quality forging, this study determined the optimal hardness and the relationship between formation parameters and forging hardness. By inputting the hardness data obtained from the Taguchi L9 orthogonal array into a Matlab-implemented neural network, this study determined a hardness formula. Finally, using the inbuilt graphical user interface software of Matlab, a simple program was written that can be used to predict hardness and that could extensively reduce the costs and time associated with forging development.
Simulation Based Mold Design Optimization of a Spring Flap Casting
Authors: Khan Muhammad Azhar Ali
Published: June 2020

The complex nature of metal casting process brings about a need to simulate it before undertaken in a foundry. Casting simulations provide insights on flow of molten metal within the mold, solidification sequence, nature and location of defects etc. Moreover, mold design can be optimized to minimize defects without undergoing physical trials-and-errors as previously practiced in traditional metal casting. This study is based on casting an ASTM A216 WCB steel spring flap for automotive suspension system using a simulation based optimized mold design. The initial and optimized mold designs are simulated in MAGMASoft for mold filling, solidification, stress distribution and defects prediction. The results of simulations and actual castings are found to be in good agreement. It is concluded that simulations are accurate in modeling casting process and in predicting defects followed by their minimization through mold design optimization. The use of auxiliary components in a carefully designed mold can lead to a nearly defect-free and high quality cast product.
The Process Development for Sound Absorption Design of Non-Woven Car Mat
Authors: Park Un Hwan , Heo Jun Hyeok , Lee In Sung , Park Dae Kyu
Published: June 2020

Automotive interior material with consists of several material layers has the sound-absorbing function. It is difficult to predict sound absorbing coefficient because of several material layers. So, many experimental tuning is required to achieve the target of sound absorption. Therefore, while the car interior materials are developed, a lot of time and money is spent. In this study, we present the method to predict the sound absorbing performance of the material with multi-layer using physical properties of each material. The properties are predicted by foam-X software using sound absorption coefficient data measured by impedance tube. And we will compare and analyze the predicted sound absorption coefficient with the data measured by scaled reverberation chamber and impedance tubes for a prototype. If the method is used instead of experimental tuning in the development of car interior material, the time and money can be saved. And then, the development effort can be is reduced because it can be optimized by simulation.
Preparation of Rutile TiO2 Film by Low Temperature Hydrothermal
Authors: Wei Miao Qing , Jin Li Chuan , Zhang Huai Wu
Published: June 2020

In this paper, a simple and pollution-free low temperature hydrothermal method for preparing rutile phase TiO2 film was proposed. When TiCl4 solution hydrolyzed in ice-water mixed DI water, rutile TiO2 can be prepared at a low temperature 70 °C, which is much lower than those of conventional Sol-Gel methods and hydrothermal process. XRD was carried out to analyze the crystal structure and confirmed the TiO2 film we prepared was pure rutile phase. The surface morphology was characterized using AFM. And XPS was also carried out to illustrate the chemical state of the elements.
Psoriasis and Cardiovascular Disease: A Narrative Review
Authors: Martinez-Moreno Adrian , Ocampo-Candiani Jorge , Garza-Rodriguez Veronica
Published: June 2020

Psoriasis is a chronic, autoimmune, and inflammatory disease that affects 2% of the world’s population. In recent years, it has been demonstrated that psoriasis confers a 25% increase in relative risk of cardiovascular disease, independent of factors such as hyperlipidemia, smoking, and obesity. The objective of this review was to analyze and describe the association between psoriasis and cardiovascular disease. In this review, we describe the epidemiological association of psoriasis and cardiovascular disease, pathophysiology, mechanisms, and its association with the well-known cardiovascular risk calculators. In addition, we describe diagnostic tools, such as imaging techniques and novel biomarkers, that are useful in the evaluation of atherosclerotic cardiovascular disease. Finally, we present different systemic therapies that are used in patients with psoriasis and their effect on atherosclerotic cardiovascular disease. This article provides an overview of the current literature on psoriasis and cardiovascular risk, which can be useful for primary care physicians in their daily clinical practice.
Using Normative Data and Unilateral Hopping Tests to Reduce Ambiguity in Return-to-Play Decisions
Authors: Madsen Leif P. , Booth Raya L. , Volz James D. , Docherty Carrie L.
Published: June 2020

Context

After a lower extremity injury, patients often return to sport (RTS) when the injured limb's performance on unilateral hopping tests is similar to that of the uninjured limb. However, the exact target symmetry value patients must reach before the RTS is unclear.

Objective

To identify variables that predict limb symmetry index (LSI) values on 6 unilateral hopping tests in healthy, physically active adults.

Design

Cross-sectional study.

Setting

Research laboratory.

Patients or Other Participants

In total, 275 healthy, physically active adults, consisting of recreational athletes (n = 198), National Collegiate Athletic Association Division I student-athletes (n = 56), and Army Reserve Officer Training Corps cadets (n = 21), volunteered to participate (143 men, 132 women, age = 20.16 ± 2.19 years, height = 172.66 ± 10.22 cm, weight = 72.64 ± 14.29 kg).

Intervention(s)

Each participant completed 3 speed (6-m crossover-hop, side-hop, figure-8 hop) and 3 distance (triple–crossover-hop, lateral-hop, medial-hop) functional performance tests on both limbs.

Main Outcome Measure(s)

Mean performance of the dominant and nondominant limbs and LSI values. Two multiple regression models were used to find variables that might help to predict a participant's LSI for each functional performance test.

Results

The models helped to predict limb symmetry for 10 of the 12 multiple regressions. Unilateral limb performance was the best predictor of LSI values, as it was statistically significant in 11 of the 12 regression models. Sex and body mass index were significant predictor variables for the side hop and figure-8 hop, respectively.

Conclusions

We found significant predictor variables that clinicians can use in the absence of baseline testing to determine patient-specific LSI values. Individualizing RTS decisions in this way may help to minimize subjectivity in the decision-making process and ensure a safe and timely return to competition.
PREDICTION OF STABILITY OF THE CIRCULATING WATER
Authors: Galkina Olena Pavlivna
Published: June 2020

In the work, on the basis of the data of the analysis of theoretical works and the laboratory studies carried out, the prediction of the values of corrosion rates in the circulating systems of coke plants was carried out using the Langelier and Ryznar stability indixes. The laws governing changes in the thermal stability of water as a function of temperature and water quality indicators (pH, alkalinity, total salinity, calcium ion content) have been established. Analysis of the obtained data showed that there is a clear dependence of the scale-corrosion properties of water on temperature and its chemical composition. A stable and effective supplying water composition for the circulating water supply system of the Kharkiv Coke Plant has been established.
EVALUATION OF FUTURE CLIMATE CHANGE SCENARIOS IN URBAN HEAT ISLAND AND ITS NEIGHBORHOOD USING DYNAMICAL DOWNSCALING
Authors: Morais Marcos Vinicius Bueno de , Urbina Guerrero Viviana Vanesa , Rudke Anderson Paulo , Fujita Thais , Martins Leila Droprinchinski , Reboita Michelle Simões , Martins Jorge Alberto
Published: June 2020

According to IPCC reports, global climate change is likely to be accompanied by a greater frequency, intensity, and duration of heat waves in urban areas. This is related to predicted and ongoing variation of atmospheric temperature and its association with the dynamical evolution of cities. Changes in the roughness pattern of the surface, wind intensity, soil available humidity and radiative properties compared to the natural surfaces characterize the formation of the Urban Heat Island (UHI). A dynamical downscaling of A2 and B1 SRES’s future scenarios from Intergovernmental Panel on Climate Change were performed for Londrina, a medium-size city of Southern Brazil, using the Weather Research and Forecasting model. The main objective of this study is to investigate the impact of these scenarios on the UHI formation and intensity based on different input data, and its role and influence in the rural area. For this, an evaluation of the model and a comparison with the scenarios were done to mitigate the current trends. The results show a tendency in the current situation in following the pessimistic A2 scenario. Also, a drier rural area for the sustainable projection (B1) is found which implicates in a higher temperature and wind patterns modification for both sites, urban and rural region. Both future projections have a direct influence on the UHI intensity and formation, yielding effects in the agriculture and affecting conditions on human comfort over the region.
Twin-Center Study Comparing Stigma Among Males and Females with Alcohol Dependence
Authors: Sadashiv Megha , Kakunje Anil , Karkal Ravichandra , Ganganna Sadashivaiah H
Published: June 2020

Introduction:

Alcohol dependence is a complex disorder that affects brain function and behavior, characterized by impaired functioning, causing considerable harm to the individuals with the disorders and to society as a whole. Stigma associated with substance use is considered a significant barrier to detection and treatment efforts, and research is needed to understand and address this issue. This study aimed to assess and compare stigma among males and females with alcohol dependence.

Methods:

The twin-center study involved 70 patients with alcohol dependence, which included 35 males and 35 females from the Department of Psychiatry, Yenepoya Medical College, Mangalore, and Abyudaya Center for Humanity and Rural Development, Integrated Rehabilitation Center for Addiction, Tumkur, India. The mean age of males was 39.14 years and females 41.00 years. The Substance Use Stigma Mechanisms Scale was used to assess stigma. The study had outpatients and inpatients who were above 18 years of age and diagnosed with alcohol dependence as per the ICD-10 criteria, not under the influence of alcohol at the time of interview and without any comorbid psychiatric illness except nicotine dependence.

Results:

The study showed anticipated stigma more in females (mean: 2.30) compared to males (mean: 1.91) which could be a significant factor for treatment-seeking behavior. Internalized stigma was more in males (mean: 3.84) compared to females (mean: 2.90). Enacted stigma did not show a significant difference between the two genders in our study.

Conclusion:

Persons with alcohol dependence experience stigma, and we found that there is a gender difference. Stigma associated with substance use is considered a significant barrier to detection and treatment efforts. Understanding various aspects of stigma will help in providing better management.
COVID-19 Pandemic
Authors: Shrivastava Saurabh RamBihariLal , Shrivastava Prateek Saurabh
Published: June 2020

The Corona Virus Disease-2019 (COVID-19) pandemic continues its upward growth in terms of the rising caseload, attributed deaths as well as the geographical distribution. Owing to the sudden rise in the number of cases, the demand for personal protective equipment (PPE) has become very high and thus it resulted in their significant shortage. Hence, it is important to respond to the global shortage of PPE and this can be done by minimizing the need, promoting the rational use, and coordinating the supply chain mechanism. At the same time, steps should be taken to ensure more production of the PPE on an emergency basis. In conclusion, it is important to collectively respond to the shortage of PPE and ensure that they are available in adequate amount for the rational usage. However, the mere usage of PPE will not avert the possibility of acquisition of infection, unless it is supplemented with other standard infection prevention and control measures.
Small Free-Living Heterotrophic Flagellates from Marine Intertidal Sediments of the Sydney Region, Australia
Authors: Lee Won Je
Published: June 2020

A total of 155 species and 75 genera were found at marine sediments in Sydney region (Australia) and are described using light microscopy: 117 species at Port Botany, 111 species at Kogarah Bay, 94 species at Woolooware Bay, 126 species at Quibray Bay, 74 species at Avoca beach, 48 species at Watsons Bay. The records include accounts of 15 unidentified taxa and two new taxa: Eoramonas jungensis sp. nov. (Eoramonas gen. nov.), Protaspa flexibilis sp. nov. Most flagellates described here have been found at other locations worldwide, but many species not reported from any other locations. I am unable to assess if these species are endemic because of the lack of intensive studies elsewhere. However, these results suggest that the flagellate communities from Botany Bay are distinctive.
Push and pull factors impacting visitors’ loyalty: A case of Saigon Zoo and Botanical Gardens
Authors: Sinh Nguyen Hoang , Anh Ngo Thi Phuong
Published: June 2020

This paper aims to build and test the model of the relationship between push and pull factors and visitors’ loyalty to botanic park, a case of Saigon Zoo and Botanical Gardens in Vietnam. The previous studies were used to build and then test the model in which 185 usable responses from botanic park visitors were analyzed among 200 collected responses. The ﬁndings contribute to the current literature of park tourism by indicating that push (β = .246) and pull (β = .619) factors have a direct impact on visitors’ loyalty.

The study has its implications in park management that focuses on the motivational factors and the psychological reasons why people visit botanic parks to create suitable marketing programs to target them.
El papel de los intereses comunes en la promoción de la Cooperación China-Irán en el Medio Oriente después de la Primavera Árabe.
Authors: Xiang-Yun Meng  , Mohd Aljarwan  , Fatemeh Atrisangari.
Published: June 2020

Con el inicio de la “Primavera Árabe” en diciembre del 2010, se produjeron cambios en el Medio Oriente, que incluyen la aparición de nuevos actores en el Medio Oriente, potencias como Rusia y China. Como sabemos, antes de la primavera árabe, se puede decir que el Medio Oriente es la esfera de influencia de los Estados Unidos. Dentro de la región, la influencia de Irán ha aumentado. Este artículo analiza las razones del rápido desarrollo de las relaciones China-Irán al enumerar los intereses comunes de ambas naciones. Los autores creen que aunque China e Irán están fortaleciendo la cooperación en varios campos, todavía existen muchas dificultades para lograr un mayor desarrollo de su relación con el nivel estratégico.
Aspectos psicológicos y pedagógicos de la enseñanza de las ciencias naturales.
Authors:  Nurgul Nurmukhanbetova  , Ayazhan Tauzhanova  , Aigul Kurmanbayeva  , Nurgul Temirbekova  , Idia Fakhrudenova  , Aigerim Zhaksybayeva  , Saule Makhanova  ,  Aina Khamitova. 
Published: June 2020

La educación se está modernizando y renovando. Los objetivos, las prioridades, el contenido y los valores de la educación general primaria están cambiando en la formación de conocimientos, y el desarrollo de la personalidad y habilidades de los niños. Estos cambios afectan la educación en ciencias naturales en la escuela primaria. Al enseñar ciencias naturales en la escuela primaria, la tarea de desarrollar la personalidad de los niños, la formación de los fundamentos de su pensamiento científico en el campo de la naturaleza y la sociedad, y aprender a comprender el mundo que lo rodea, aparece en primer plano. Es posible formar estas cualidades teniendo en cuenta los aspectos psicológicos y pedagógicos de la enseñanza de las ciencias naturales a los niños de primaria.
Nombramiento y selección de jueces en el Reino Unido, Estados Unidos e Irán y su impacto en la independencia judicial.
Authors:  Gholamreza Jalali  , Seyyed Vahid Lajevardi  , Abbas Ali Heidari. 
Published: June 2020

En este artículo, examinaremos los métodos de evaluación y el impacto de esas prácticas en la independencia judicial de los jueces. Esta investigación se ha llevado a cabo en Irán y en dos importantes representantes de la Ley de la Commonwealth. Concluimos, que aunque la elección de los jueces federales en los Estados Unidos es un proceso político, no tiene un impacto negativo en su funcionamiento independiente debido a su aprendizaje permanente. También encontramos que las condiciones que gobiernan la elección de los jueces en la ley iraní debido al hecho de que las personas están buscando alcanzar el puesto y el puesto no lo está buscando, han logrado seguir la relación de empleo y empleo.
Desarrollo de nombres en Punjabi y relaciones léxico-semánticas.
Authors:  Nosheen Akhter  , Muhammad Asim Mahmood  , Muhammad Tahir Nadeem. 
Published: June 2020

Este estudio tiene como objetivo el desarrollo de conjuntos sintéticos del sustantivo Punjabi Language (PL) en Shahmukhi. El estudio ha desarrollado y utilizado un corpus de 2 millones de palabras del Punjabi en escritura Shahmukhi. Se ha tomado una lista de 1000 nombres en inglés de fuentes de aprendizaje en línea del Punjabi. La lista de sustantivos se ha traducido del inglés al gurmukhi y al shahmukhi utilizando el software: Akhar 2016. Este estudio ha desarrollado conjuntos de sustantivos que siguen los diccionarios de wordnet y Punjabi de Princeton, y su metodología se ha ideado de varios términos. Este estudio concluye que los sentidos tomados de Princeton wordnet variaron de la cultura punjabi.
El abuso a personas mayores en el entorno familiar. Implicaciones para la educación y la práctica.
Authors:  Jolanta Mackowicz. 
Published: June 2020

El objetivo principal del estudio fue obtener conocimiento sobre la escala y las expresiones de las víctimas y los delincuentes. El método utilizado es el análisis documental (informes policiales). Los datos obtenidos presentan casos de abuso registrados durante un año calendario. Los resultados muestran que la violencia doméstica contra personas mayores constituye el 15% de los casos denunciados, en su mayoría abuso emocional, físico y económico. Sobre la base de los datos recopilados, se hicieron las características de víctimas y delincuentes. La prevención del maltrato a personas mayores se basa principalmente en cambiar las actitudes sociales y superar los estereotipos, tarea a largo plazo que debe llevarse a cabo educando a toda la sociedad, a partir de la generación más joven.
Educación pedagógica de posgrado: tendencias y riesgos.
Authors:  Valentina Sahuichenko. 
Published: June 2020

El autor se muestra insatisfecho con la visión de la cultura organizacional del trabajo pedagógico en el sistema de educación pedagógica de posgrado, que con mayor frecuencia se centra en la búsqueda de formas alternativas de trabajo y no en el aumento de la efectividad de las actividades pedagógicas de los trabajadores científicos y pedagógicos, que se reduce erróneamente a las calificaciones basadas en los resultados de estudiantes y estudiantes. La urgencia del estudio se ve agravada por la necesidad de búsquedas para la optimización del trabajo pedagógico durante las reformas educativas.
Modelado numérico de intercambiadores de calor de aletas circulares que utilizan nano-fluido e investigan los efectos de diferentes parámetros en la transferencia de calor y la caída de presión.
Authors:  Mohammad Motaei  , Jafar Ghafouri. 
Published: June 2020

Los intercambiadores de calor son casi los elementos más aplicables en procesos químicos. En este estudio, los intercambiadores de calor se han estudiado numéricamente utilizando nano-fluido. El efecto de diferentes parámetros en el intercambio de calor y la caída de presión también se ha estudiado y los resultados mostraron que el aumento del espacio entre los tubos y el aumento del número de tubos pueden aumentar la transferencia de calor y la caída de presión. Sin embargo, el aumento del grosor de la aleta puede disminuir la presión como resultado de un mayor intercambio de calor; por lo tanto, puede ser el parámetro más efectivo para mejorar la eficiencia del intercambiador de calor con aletas.
Actividad empresarial femenina, motivación y brecha de género.
Authors:  Iuliia Pinkovetskaia  , Irina Nikitina  , Tatiana Gromova. 
Published: June 2020

El trabajo evalúa los niveles de actividad empresarial de las mujeres, sus preferencias motivacionales y el análisis comparativo de las actividades de etapa temprana de mujeres y hombres. Se hace un análisis de 74 países entre 2016-2017, presentado en el informe Global Entrepreneurship Monitor. La investigación revela características del emprendimiento femenino y las barreras para su desarrollo. El documento define países con valores altos y bajos de los indicadores considerados. El nuevo conocimiento obtenido se puede utilizar en la investigación científica, en el proceso educativo en la preparación de licenciaturas y maestrías, así como en la capacitación de especialistas en problemas de pequeñas empresas. El estudio propone nuevos métodos y herramientas para el análisis.