bluuebunny/crossref_metadata_2025 huggingface dataset:
DETERMINACIÓN DE MORINA EN TÉ VERDE Y CAFÉ POR VOLTAMPEROMETRÍA DE ADSORCIÓN UTILIZANDO ELECTRODOS DE CARBONO MODIFICADOS CON POLI (3,4-ETILENDIOXITIOFENO) Y LÍQUIDO IÓNICO
Authors: Peña Daniel , Pulido Elkin , Otiniano Manuel , Nagles Edgar
Published: August 2020

Este artículo presenta un método sensible y selectivo para la determinación de morina (MR) en presencia de rutina (RT) y quercetina (QC) en un electrodo de carbono serigrafiado (SPCE) recubierto con poli (3,4-etilendioxitiofeno) (PEDOT) y líquidos iónicos 1-butil-3- tetrafluoroborato de metilimidazolio (BMIMBF4), (PEDOT-BMIMBF4 / SPCE). Varios estudios han demostrado que la morina puede adsorberse en la superficie del electrodo SPC modificado con PEDOT. Además, (BMIMBF4) en la superficie del electrodo modificado con PEDOT aumentó la corriente pico anódica casi 52,0 % y facilitó la oxidación de la morina a valores potenciales menos positivos, demostrando ser una superficie ideal hacia la oxidación de la morina. Por otro lado, las sustancias potenciales que pueden interferir con la señal de morina, como la rutina y la quercetina, se oxidan a un potencial más y menos positivo, respectivamente. La voltamperometría cíclica (CV) y la espectroscopía de impedancia electroquímica (EIS) se utilizaron para cuantificar y caracterizar el electrodo modificado. El pH y los parámetros electroquímicos, como el potencial de adsorción, el tiempo de adsorción y la velocidad de barrido se obtuvieron de forma óptima (pH 2,7; EADS, -0,10 V; tADS, 60 s; y ʋ, 50 mVs-1). El límite de detección fue de 0,16 μmol L-1 y el RSD fue del 5,2 %. La utilidad del electrodo modificado se usó para cuantificar muestras de té verde de morinina en presencia de otras flavonas con resultados consistentes.
Reto de los primeros 1000 días de vida
Authors: López de Blanco Mercedes , Macías de Tomei Coromoto , Castro María José
Published: August 2020

Los primeros mil días de vida son parte del Curso de Vida, al tomar en consideración la Epigenética, término postulado por Waddington en 1942: modifica la expresión genética SIN cambiar la secuencia de las bases de ADN. El proyecto internacional llamado DOHaD (Developmental Origins of Health and Disease) u ODSE (Orígenes del Desarrollo de la Salud y Enfermedad), está inserto dentro de la Transición Alimentaria y Nutricional (TAN), que, en países en desarrollo—ocurre en forma muy rápida—produce tanto la malnutrición por déficit como por exceso; es decir la doble carga nutricional. La TAN es producto en nuestro país, de una urbanización acelerada y anárquica, y de cambios socioculturales, como la incorporación de la mujer al mercado de trabajo con menos tiempo para cocinar; está acompañada de una transición epidemiológica con la emergencia y prevalencia de la obesidad y de las enfermedades crónicas como morbiletalidad. Esta doble carga nutricional se modificó, por la situación país, y prevalece más el déficit que el exceso. Se presenta el PROYECTO FUNDACIÓN BENGOA – SVPP – SOGV – CANIA, cuya meta es: Elaborar una agenda preventiva común contra la malnutrición tanto por déficit como por exceso y sus comorbilidades, bajo el enfoque de los primeros mil días de vida y su efecto sobre todo el curso de vida. Se realizó el diseño y aplicación de tres cuestionarios digitales, que se utilizaran para la elaboración de esta meta. Se consolidó un CONSENSO NACIONAL formado por profesionales de la salud involucrados en los primeros mil días de vida.
Long-term changes in forest cover in a global biodiversity hotspot in southern Mozambique
Authors: Tokura Wataru , Matimele Hermenegildo , Smit Julian , Hoffman Michael Timm
Published: August 2020

Background: Deforestation is a complex and dynamic process of widespread concern in sub-Saharan Africa which is influenced by a range of social, economic and biophysical factors.
Objectives: The aim of this study was to analyse patterns of deforestation and its potential drivers in the Licuáti Forest Reserve, a biodiversity hotspot in southern Mozambique between 1990 and 2016. Method: We performed image classification on Landsat imagery at six time steps and interviewed local community members to understand the spatial pattern and rate of forest cover loss over time. We also examined changes in the incidence of fire.
Results: A substantial increase in the rate of deforestation since 1990 was detected in this vulnerable thicket vegetation. The probability of deforestation was significantly higher near the major roads, where houses are located. This suggests that the proximity of human settlements to the forest, and access to charcoal markets in urban areas, influenced the spatial pattern. Two key factors 1) charcoal production, and 2) the establishment of settlements and agricultural lands were identified as proximate causes of deforestation. In addition, fires associated with these two causes might amplify the loss of forests in the area.
Conclusions: Complex interactions between the drivers of deforestation and socio-economic factors were suggested, as most of the charcoal produced in the region is transported to Maputo. Ongoing road improvements and infrastructural development in the region will likely accelerate the decline in forest cover in the future. This has implications for the biodiversity of the region as well as for the sustainability of local livelihoods, as they often depend on forest products for their daily uses.
The First Habitable-zone Earth-sized Planet from TESS. III. Climate States and Characterization Prospects for TOI-700 d
Authors: Suissa Gabrielle , Wolf Eric T. , Kopparapu Ravi kumar , Villanueva Geronimo L. , Fauchez Thomas , Mandell Avi M. , Arney Giada , Gilbert Emily A. , Schlieder Joshua E. , Barclay Thomas , Quintana Elisa V. , Lopez Eric , Rodriguez Joseph E. , Vanderburg Andrew
Published: August 2020

We present self-consistent three-dimensional climate simulations of possible habitable states for the newly discovered habitable-zone Earth-sized planet TOI-700 d. We explore a variety of atmospheric compositions, pressures, and rotation states for both ocean-covered and completely desiccated planets in order to assess the planet’s potential for habitability. For all 20 of our simulated cases, we use our climate model outputs to synthesize transmission spectra, combined-light spectra, and integrated broadband phase curves. These climatologically informed observables will help the community assess the technological capabilities necessary for future characterization of this planet—as well as similar transiting planets discovered in the future—and will provide a guide for distinguishing possible climate states if one day we do obtain sensitive spectral observations of a habitable planet around an M star. We find that TOI-700 d is a strong candidate for a habitable world and can potentially maintain temperate surface conditions under a wide variety of atmospheric compositions. Unfortunately, the spectral feature depths from the resulting transmission spectra and the peak flux and variations from our synthesized phase curves for TOI-700 d do not exceed 10 ppm. This will likely prohibit the James Webb Space Telescope from characterizing its atmosphere; however, this motivates the community to invest in future instrumentation that perhaps can one day reveal the true nature of TOI-700 d and to continue to search for similar planets around less distant stars.
The Discovery of a Hidden Broad-line AGN in a Bulgeless Galaxy: Keck NIR Spectroscopic Observations of SDSS J085153.64+392611.76
Authors: Bohn Thomas , Canalizo Gabriela , Satyapal Shobita , Pfeifle Ryan W.
Published: August 2020

We report the discovery of a buried, active supermassive black hole (SMBH) in SDSS J085153.64+392611.76, a bulgeless Seyfert 2 (Sy2) galaxy. Keck near-infrared observations reveal a hidden broad-line region, allowing for the rare case where strong constraints can be placed on both the BH mass and bulge component. Using virial mass estimators, we obtain a BH mass of log(M
BH/M
⊙) = 6.78 ± 0.50. This is one of the only Sy2 active galactic nuclei (AGNs) hosted in a bulgeless galaxy with a virial BH mass estimate and could provide important constraints on the formation scenarios of the BH seed population. The lack of a bulge component suggests that the SMBH has grown quiescently, likely caused by secular processes independent of major mergers. In the absence of a detectable bulge component, we find the M
BH–M
stellar relation to be more reliable than the M
BH–M
bulge relation. In addition, we detect extended narrow Paα emission that allows us to create a rotation curve where we see counterrotating gas within the central kiloparsec. Possible causes of this counterrotation include a galactic bar or disruption of the inner gas by a recent fly-by of a companion galaxy. This in turn could have triggered accretion onto the central SMBH in the current AGN phase.
Relating the Structure of Dark Matter Halos to Their Assembly and Environment
Authors: Chen Yangyao , Mo H. J. , Li Cheng , Wang Huiyuan , Yang Xiaohu , Zhang Youcai , Wang Kai
Published: August 2020

We use a large N-body simulation to study the relation of the structural properties of dark matter halos to their assembly history and environment. The complexity of individual halo assembly histories can be well described by a small number of principal components (PCs), which, compared to formation times, provide a more complete description of halo assembly histories and have a stronger correlation with halo structural properties. Using decision trees built with the random ensemble method, we find that about 60%, 10%, and 20% of the variances in halo concentration, axis ratio, and spin, respectively, can be explained by combining four dominating predictors: the first PC of the assembly history, halo mass, and two environment parameters. Halo concentration is dominated by halo assembly. The local environment is found to be important for the axis ratio and spin but is degenerate with halo assembly. The small percentages of the variance in the axis ratio and spin that are explained by known assembly and environmental factors suggest that the variance is produced by many nuanced factors and should be modeled as such. The relations between halo intrinsic properties and environment are weak compared to their variances, with the anisotropy of the local tidal field having the strongest correlation with halo properties. Our method of dimension reduction and regression can help simplify the characterization of the halo population and clarify the degeneracy among halo properties.
A new species of the genus Acanthosaura (Squamata, Agamidae) from Yunnan, China, with comments on its conservation status
Authors: Liu Shuo , Hou Mian , Mo Mingzhong , Rao Dingqi
Published: August 2020

A new species ofAcanthosaurafrom Yunnan, China, is described based on morphological and genetic data. The new species can be separated from all other species of the genus by having a different shape of the black eye patch, a different coloration of the postorbital and occipital spines and nuchal crest, and a different color of the gular pouch. Genetically, uncorrected sequence divergences of COI between the new species and investigated congeners ranged from 16.12% to 24.11%. The conservation status of the new species is also discussed.
Dormir, s’endormir, quelle aventure !
Authors: Prieur Régine
Published: August 2020

Les trois premières années voire un peu plus de la vie du bébé, le parcours du sommeil «  tout seul comme un grand » est chaotique et fait d’aller-retours, d’aggravation et d’accalmie. Il s’agit de poser quelques remarques cliniques et de prendre part à ma façon au débat qui agite les parents et les professionnels sur l’endormissement et le sommeil du bébé.
De deux ans sans nuit complète à coach de sommeil…
Authors: Malgouyres Laure
Published: August 2020

L’auteure présente sept principes servant de socle à sa pratique de Gentle Sleep coach. Elle aborde la question des pleurs des bébés et la façon de les éviter ou de les réduire lors d’un coaching, en tenant compte notamment du caractère de l’enfant et de son âge. Sont abordées également les béquilles de sommeil qu’il est nécessaire de supprimer quand l’enfant est prêt, et seulement à ce moment-là. Laure Malgouyres rappelle l’importance de la régularité, que ce soit dans la réponse des parents donnée au bébé ou dans le planning (à partir de 6 mois). Elle souligne enfin la nécessité d’écarter toute cause médicale qui pourrait être à l’origine des troubles du sommeil.
L’accompagnement au sommeil en crèche
Authors: Lévesque Hilali Lucie
Published: August 2020

S’abandonner au sommeil exige d’être en confiance et de pouvoir lâcher prise. En crèche, les professionnels doivent faire preuve de créativité pour accompagner l’endormissement de chaque enfant avec patience et bienveillance.
Histoires de sommeil…
Authors: Rateau Dominique
Published: August 2020

Ce texte, écrit quelques mois avant l’arrivée en France du Covid-19 et qui sera en librairie après le 11 mai 2020, date actuellement fixée pour la sortie de cette expérience unique de confinement, parle de sommeil, d’endormissement, de liens, de séparations, de vie, de mort, de paroles, de littérature… Il parle aussi et surtout d’albums – œuvres littéraires en mots et en images – qui disent la nuit, les craintes, l’apaisement, le sommeil… Des albums à lire et à relire. Des albums à partager dès la naissance et à tous les âges de la vie pour ensemble rêver, penser, imaginer et créer le monde de demain…
Quel est l’escroc qui a inventé l’expression « dormir comme un bébé » ?
Authors: Laurent Audrey
Published: August 2020

L’expression « dormir comme un bébé » ne s’applique à aucun des fils de l’auteure : refus de dormir, couchers interminables, réveils nocturnes et journées débutées aux aurores font son quotidien depuis plusieurs années. La culpabilité, le sentiment d’incompétence et l’insondable fatigue la pousseront à tenter mille et une astuces, en vain. Le temps, la persévérance et une belle rencontre finiront cependant par ramener la légèreté et le calme dans la famille.
Rythmes précoces et temporalité archaïque
Authors: Fournier Sébastien
Published: August 2020

L’existence de l’Homme s’inscrit dans le temps. Il ne peut se soustraire à cette réalité métaphysique. Mais contrairement à la plupart des autres êtres vivants, il ne se contente pas de le subir, il apprend progressivement à en saisir certaines lois. Il nous reste à comprendre comment il parvient, à un stade très précoce, à initier cette relation singulière, personnelle et intime avec le temps.
Lifespan of solutions to a parabolic type Kirchhoff equation with time-dependent nonlinearity
Authors: Li Haixia
Published: August 2020

In this paper, an initial boundary value problem for a parabolic type Kirchhoff equation with time-dependent nonlinearity is considered. A new blow-up criterion for nonnegative initial energy is given and upper and lower bounds for the blow-up time are also derived. These results partially generalize some recent ones obtained by Han and Li in [Threshold results for the existence of global and blow-up solutions to Kirchhoff equations with arbitrary initial energy, Computers and Mathematics with Applications, 75(2018), 3283-3297].
Online Technologies in STEM Education
Authors: Liu Zi-Yu , Chubarkova Elena , Kharakhordina Marina
Published: August 2020

STEM education has become the normative base for teaching natural sciences, physical-mathematical disciplines and engineering sciences in a number of coun-tries. This technique has become the basis for a series of reforms for secondary and higher education in the USA, Australia, and some other countries. The meth-od involves the integration of training in the fields of mathematics, technical spe-cialties, scientific research and engineering. The widespread use of this technique and its active research throughout the world over the past ten years is due to the need to improve the quality of technical education and the ever-increasing rate of technological progress. This research is devoted to studying the impact of the STEM education introduction for 3rd year students of technical and pedagogical departments for improving the quality of training. The study involved two groups of students from two universities in Russia and China. The sample consisted of 316 people from each university, and the same amount was for control group to verify the results. The two study groups underwent training using two different STEM methodologies - “amalgam” and “interconnect”, which involve varying degrees of integration of various academic subjects within the coordinated STEM education. Both study groups used online-education integrated with STEM that helped to significantly increase the involvement of students in the learning pro-cess. All three groups passed pre-tests and post-tests on the learning outcomes before and after the introduction of the STEM education. The average grades re-ceived by students on studied disciplines show that the STEM education increas-es the academic performance with the statistical error of the study exceeded. The introduction of the “interconnect” method, which implies a greater integration of subjects during the training, showed provably higher results than the “amalgam” method. However, this study cannot be used to assess the quality and capabilities of each of these methods, since such an assessment requires additional research.
Using Internet of Things Application for Disposing of Solid Waste
Authors: Yahya Omar , Alrikabi Haider Th.Salim , Al_airaji Roa'a M. , Faezipour Miad
Published: August 2020

In recent years, the Internet of things has become an urgent need in all of things that a person needs with least  effort and time. It covers in several areas, including controlling traffic and parking, following up on general and private buildings that  what you need of  periodic maintenance, and reducing energy through using  lighting Smart. In this paper, we focus on important thing and widespread in Iraq  , collection of solid waste in the streets without treatment, which causes environmental and psychological damage to the citizen.in addition , the solid waste deposal need set up sensors(RFID,GPS, ultrasonic, GSM,…etc), connecting them to Arduino Uno to accomplish specific intelligent processing that we need. Moreover, the system provides waste containers and warns the concerned departments in the city of the need to empty them when they reach a certain level, which makes the streets healthier, more attractive and free from rodents.
Virtual Teachers’ Toolbox (VTT-BOX) – The Experience of the Costa Adeje International School and the University of La Laguna
Authors: Pérez-Jorge David , Rodríguez-Jiménez María del Carmen , Marrero-Rodríguez Nuria , Pastor-Llarena Sergio , Mateos Peñas María Dolores
Published: August 2020

We present the results which arise from the development of the Virtual Teachers’ Toolbox (VTT-Box) project. The main aim of the project was to develop a virtual web-based service for teachers (toolbox) to support them best with a sophisticated tool to use the pedagogical framework based on an innovative learner-centered approach, including a quality enhancement framework.

The project was designed for students and teachers of the 4th grade of the Obligatory Secondary Education (4th ESO) and Bachillerato, and was focused on the students’ needs with the aim of increasing their motivation and learning success. The development and practical implementation of an innovative motivating self-evaluation tool for students called Self-evaluation Mandala was included. The Mandala is an easy to handle graphic tool which defines learning results based on competences, evaluates students success, motivates them and makes them aware  of the improvement achieved throughout their learning process, increasing motivation and academic success.

This work analyses the results of the development of the project with the students of the 4th ESO and Bachillerato (n=227), and the opinions of the teachers who implemented the project at the Costa Adeje International School. Moreover, the effect of the training with the Mandala self-evaluation tool was evaluated by teachers in training of the University of La Laguna (n=25). The evaluation made by the teachers in training and the students invites to keep working on the development of training events like the one carried out at the VTT-Box project. The dissemination of the project entailed a global training experience that has allowed the enhancement not only of participant teachers and students, but also of teachers from several countries, including teachers in training of the University of La Laguna.
Design of Mobile Communication System for Emergency Services
Authors: Hazim Hussien Tuama , Al-Behadili Hasanain Abbas Hasan , Kareem Thaar A. , Jabbar Mays Kareem
Published: August 2020

Telecommunication technology serves several fields in the world. One of the most significant fields is the emergency services to provide a fast connection between the case, the vehicle and emergency treatment office. This paper is a part of a long-term project to design a reliable communication system service to be used for emergency services of a specific city. The hardware devices of this system are intended to work within an mm waves frequencies. In the current research, as a starting point, an exhaustive study accomplished to pave the way to the main goal of the project. The system uses OFDM technology to improve the performance of the system. Other requirements for error correction are also included in the model such as convolutional, hamming coding and interleaving. The system development is supported by a Matlab interface software to simulate the job of an IoT real-time network covering both vehicles and the control centres.
An Overview of Feature-Based Shadow Detection Methods
Authors: Musleh Suhaib , Sarfraz Muhammad , Raafat Hazem
Published: August 2020

Shadows occur very frequently in digital images while considering them for various important applications. Shadow is considered as a source of noise and can cause false image colors, loss of information, and false image segmentation. Thus, it is required to detect and remove shadows from images. This chapter addresses the problem of shadow detection in high-resolution aerial images. It presents the required main concepts to introduce for the subject. These concepts are the main knowledge units that provide for the reader a better understanding of the subject of shadow detection and furthering the research. Additionally, an overview of various shadow detection methods is provided together with a detailed comparative study. The results of these methods are also discussed extensively by investigating their main features used in the process to detect the shadows accurately.
Segmentation of Pectoral Muscle in Mammogram Images Using Gaussian Mixture Model-Expectation Maximization
Authors: Khoulqi Ichrak , Idrissi Najlae , Sarfraz Muhammad
Published: August 2020

Breast cancer is one of the significant issues in medical sciences today. Specifically, women are suffering most worldwide. Early diagnosis can result to control the growth of the tumor. However, there is a need of high precision of diagnosis for right treatment. This chapter contributes toward an achievement of a computer-aided diagnosis (CAD) system. It deals with mammographic images and enhances their quality. Then, the enhanced images are segmented for pectoral muscle (PM) in the Medio-Lateral-Oblique (MLO) view of the mammographic images. The segmentation approach uses the tool of Gaussian Mixture Model-Expectation Maximization (GMM-EM). A standard database of Mini-MIAS with 322 images has been utilized for the implementation and experimentation of the proposed technique. The metrics of structural similarity measure and DICE coefficient have been utilized to verify the quality of segmentation based on the ground truth. The proposed technique is quite robust and accurate, it supersedes various existing techniques when compared in the same context.
Supporting Patient-led Initiatives to Improve Healthcare
Authors: Hosoda Miwako , Hosoda Midori
Published: August 2020

In modern times, the main disease structure has changed from infectious disease to chronic disease, and many people are now living with illness. Despite the patients' current situation, society still expects people with disease to behave consistently with the “Sick Role”, which Talcott Parson's previously defined. Once people are diagnosed, for example, as cancer patients, they may lose their jobs and social participation opportunities and their hope to live. To change this situation, people living with disease do a variety of things, for instance, changing their illness image and repelling social stigma, by collaborating with other stakeholders such as medical and health professionals, persons from the workplace, fellow patients, and their community. The actions undertaken by patients in cancer and ME/CFS support groups and prefectural Medical Councils in Japan as well as patients' collaboration with various stakeholders can be seen as a form of health governance. Patient-led initiatives are critical for the overall amelioration of healthcare.
Electronic Unified Health System: opportunities for improvement
Authors: Sampaio Camila Santana Justo Cintra , Évora Yolanda Dora Martinez
Published: August 2020

This study aimed to develop and evaluate a prototype with opportunities for improvement for the e-SUS Primary Care module, integrated in the proprietary system used at the research site, with a view to improving the health information system. It is an applied research, with a qualitative approach, in the action-research modality. The population consisted of all (30) Community Health Agents assigned to six Family Health Centers in the city of Ribeirão Preto, State of São Paulo, Brazil and six computer experts, who agreed to participate in the research by signing the Informed Consent Form. The study was developed in three stages. Stage 1 - Knowledge brought by the Community Health Agent (CHA): observation, by the researcher, of the execution of professional activities in the Electronic Unified Health System of Primary Health Care and unstructured interview, between May and July 2016; Stage 2 - Construction of the prototype with opportunities for improvement for the e-SUS AB module. We used the AXURE RP Pro 7.0 software. Stage 3- Evaluation of the prototype by the CHA and computer experts. An evaluation instrument was developed considering the specifications described by ISO/IEC 25010, 9241 and 14598 with the parameters: poor, fair, good and excellent. The results show the importance of knowing the aspects related to the way of working, or behavior, that can influence the final quality of the data inserted in the Health Information Systems. In the same way, such systems aim to obtain inputs for the definition of the requirements and goals of usability, in order to meet the different user roles identified, and also reinforces the relevance of looking at own systems, acquired in the private market or developed in the municipality. The rapprochement between the researcher and the people involved in the investigated situation allowed for the detection of gaps between the indispensable components to carry out the actions that aim to consolidate computerization in health and, above all, to outline potential solutions to the problems identified.
Pentecostais, Fundamentalismo e Laicidade no Brasil:
Authors: Sousa Bertone de Oliveira
Published: August 2020

O presente artigo analisa o pentecostalismo brasileiro, tendo como foco a atuação da bancada evangélica no Congresso Nacional, a partir da redemocratização. Para isso, partimos de uma análise do conceito de fundamentalismo para problematizarmos sua aplicação em nosso contexto-histórico cultural. É feita uma distinção do fundamentalismo de outros momentos da história do movimento protestante, para compreensão de suas especificidades quando de seu surgimento, no início do século XX e em nossa realidade histórica. Por fim, analisamos alguns projetos de lei de parlamentares brasileiros e seus possíveis impactos sobre a vida social, bem como suas consequências para a democracia e o dispositivo constitucional da laicidade.
Revista A Seara e o debate sobre a inserção da Igreja Assembleia de Deus na política partidária (1956-1958)
Authors: Fonseca André Dioney
Published: August 2020

Este artigo tem como objetivo analisar a iniciativa pioneira de João Pereira de Andrade e Silva e Joanyr de Oliveira no fomento ao debate sobre a relação entre Igreja e política nas páginas de A Seara, revista que teve sua circulação iniciada em setembro de 1956 pela Casa Publicadora das Assembleias de Deus (CPAD). Nossa intenção é demonstrar que, embora a maioria da liderança da Assembleia de Deus (AD) fosse, naquele contexto, hostil à participação da Igreja na arena política, havia alguns membros e líderes que viam sua inserção no âmbito político como algo urgentemente necessário. Mostraremos também que a reação da CPAD, em face desse ousado projeto editorial de A Seara, foi bastante contundente, resultando no desmonte da equipe que havia desenhado as linhas editoriais mestras do periódico, quando de sua fundação. A importância dessa reflexão está na possibilidade de podermos conhecer uma importante faceta da história da relação da AD com a política que ainda foi muito pouca estudada, levando-se em consideração que a maioria das pesquisas sobre as articulações eleitorais dessa Igreja está concentrada no contexto de abertura democrática dos anos 1980, e que os poucos trabalhos que pretenderam analisar as relações da AD com o mundo da política, antes desse período, deram destaque às vozes predominantes, que defendiam uma postura de respeito da Igreja aos “poderes temporais”, sem qualquer inserção político-partidária.
Internal Shear Stress Distribution and Subsurface Cracks of PPS Thrust Bearings under Rolling Contact Fatigue in Water
Authors: Mizozoe Syunsuke , Kida Katsuyuki
Published: August 2020

In this study, crack propagation in PPS thrust bearings under rolling contact fatigue (RCF) in water was observed, and relation between subsurface crack and internal shear stress parallel to the surface was investigated. It was found the cause of flaking was subsurface crack. They were evaluated in terms of contact stress and friction between their faces. It was discovered that subsurface cracks distributed around shear stress peak, and flaking failure was dominated by subsurface shear stress.
Rate-Dependent Material Properties of Adhesively Bonded Joints - Must Have or Nice to Have?
Authors: May Michael
Published: August 2020

In the context of automotive crash simulation, rate-dependent properties are sought for all materials undergoing deformation. Measuring rate-dependent properties of adhesively bonded joints is a challenging and associated with additional cost. This article assesses the need for having rate-dependent properties of adhesively bonded joints for the example of a typical automotive structure, an adhesively bonded metallic T-joint. Using Finite Element simulation it could be shown that good agreement between experiment and simulation was only achieved if rate-dependent properties were considered for the adhesive.
Effect of Interface Geometry on Strength of Single Lap Adhesive Joint of Sisal-Glass/Epoxy Laminates
Authors: Khalid Asad A.
Published: August 2020

In this project, experimental work on tensile behaviour of single lap adhesive joints of sisal, glass and hybrid sisal-glass/epoxy composite laminates has been carried out. Composite laminates were fabricated by hand lay-up method using chopped strand mat sisal and glass fibers with epoxy resin matrix. Lab joints of four interface geometries; straight flat, triangular, rectangular and sinusoidal were fabricated. Tensile load-displacement relations were drawn and discussed. Effect of interface geometry and material type on maximum load and strength of the single lap joint was investigated. Failure mechanism of the fractured specimens was discussed. Results show that the glass/epoxy lap joints with semi-circular adhesive interface geometry supported load higher respectively 14.26%, 26.13%, and 30.79% than rectangular, triangular and straight flat interface geometries. Glass/epoxy lap joint with semi-circular interface geometry supported tensile load higher 5.61% and 21.83% than that obtained from hybrid sisal-glass and sisal/ epoxy adhesive joints. While the shear strength was found higher respectively 6.19% and 18.69%. Adhesive failure mode was observed for most of the single lap joints investigated. Mixed failure mode of adhesive and adherend materials was observed on the sisal/epoxy lap joints.
Effect of Raw Materials on Properties of Coated Al2O3-Al Cermet Materials via Vacuum Sintering Method
Authors: Chen Ai Xia , Yang Chao , Wang Rui Hua , Wang Fang , Xu Ming Han , Li Shi Bin , Song Jie Guang , Chen Lin
Published: August 2020

In this paper, the effect of raw materaisl on the properties of coated Al2O3/Al cermet materials were investigated, the raw materials were prepared via different methods, which provide a reference for obtaining higher performance cermet materials. Through mixing, molding, sintering, sample preparation, scanning electron microscopic observation, energy spectrometer observation and analysis, the following conclusions can be drawn, the density of the cermet material prepared by the mechanical ball milling method (83.5%) is higher than that of the cermet material prepared by the chemical precipitation method (92.8%). It is nearly 10% lower. The alumina particles prepared by the ball milling method are agglomerated, and a large amount of agglomeration occurs in the aluminum, and the composition is very uneven. For materials prepared by the precipitation method, the aluminum oxide is uniformly distributed in the aluminum. The ball-milling powder is used to prepare materials, most of the alumina is in the form of particles, and in the precipitation method. In the powder preparation sample, the thin layer of alumina which forms the same eggshell envelops the aluminum, and the aluminum has a certain liquid phase change. the surface hardness (824HV) of the cermet material prepared by the mechanical ball milling method is lower than the surface hardness (1005HV) of the cermet material prepared by the chemical precipitation method.
Visualization and Quantification of Stresses at the Ends of Short Fibers Embedded in Epoxy Resin
Authors: May Michael , Mohrmann Holger , Nahme Hartwig
Published: August 2020

The photoelastic effect was used to visualize and quantify stresses at the end of fibers embedded in birefringent epoxy resin. A method was proposed allowing not to only quantify the differences in main principal stress for a single loading state, but to allow monitoring the evolution of local stress throughout the micro-mechanical experiment. It was found that the ends of fibers foster the formation of shear stresses which influence the principal stress distribution. Typically, star-shaped principal stress distributions were found at the ends of fibers. Finite Element simulations of the tests were in good agreement with the experimental evidence.
Analysis of Pitting Corrosion for 2219 Aluminium Alloy under Different Corrosion Circumstances
Authors: Li Yi Fei , Lv Sheng Li
Published: August 2020

According to the observation of a metallurgical microscope, surface morphology of 2219 aluminium alloy under several corrosion circumstances, such as corrosion pits and grain boundary corrosion, is directly perceived. Furthermore, with a laser range finder, corrosion depth data can be measured, and by using some methods of data processing, the affection for this material of certain solution components and immersion time is studied quantitatively. This binary study mean not only provides both graphical and statistical analysis, but also gives the relationship between them, which makes the result more reliable.
Effect of Alloying Elements on Mechanical Properties of High-Strength Low-Alloy Steel
Authors: Li Ning , Kingkam Wilasinee , Bao Zi Ming , Han Ren Heng , Huang Yao , Zhang He Xin , Zhao Cheng Zhi
Published: August 2020

In this study, the two types of high-strength low-alloy steels were melted and cast in a vacuum induction furnace. Phase transition temperature of HSLA steel was calculated by JMatPro software. The calculation results show that the two different types of HSLA steels which have equal phase proportions of ferrite and austenite at a temperature of approximately 820 and 800 °C in HSLA-I and HSLA-II, respectively. In addition, the effect of chemical composition on the microstructure and mechanical properties of steels were studied. The results indicate that the ultimate tensile stress value of HSLA-II samples was greater than the HSLA-I samples by about 35%, and the yield stress and breaking strength value of HSLA-II were higher than HSLA-I as well.
Effect of Synthesis Conditions on the Preparation of Ag/ZnTiO3 via Sol-Gel Method and its Antibacterial Properties
Authors: Le Huynh Tuyet Anh , Nguyen Tuan Anh , Huynh Ky Phuong Ha
Published: August 2020

Antibacterial materials based on nanotechnology have been attracted considerable attention by the scientific community. In this study, the sol-gel method was applied to prepare of antibacterial materials from tetra-n-butyl orthotitanate, zinc nitrate and ethylenediamine tetraacetic acid (EDTA) as a complexing agent. The eﬀects of the synthesis conditions on the properties of the Ag/ZnTiO3 samples such as the calcination temperature, the calcination time, pH value and ethylene glycol volume, were investigated. The obtained materials were characterized by powder X-ray diﬀraction (XRD) and their antibacterial activity against Staphylococcus aureus (S. Aureus) was evaluated. The results showed that the optimum conditions for Ag/ZnTiO3 synthesis were: calcination temperature of 650°C, calcination time of 2 h, pH value of 4.5 and ethylene glycol volume of 4.5 mL.
Diagnosis and Management of Paediatric Osteoarticular Infections
Authors: Dayasiri Kavinda , Thadchanamoorthy V.
Published: August 2020

Despite advances in treatment and understanding of paediatric osteoarticular infections, management of children with these infections continue to be a challenge due to delayed diagnosis and treatment and emergence of virulent pathogens. The most common paediatric osteoarticular infections include septic arthritis and acute osteomyelitis. The recommended approach is multi-disciplinary management and the mainstay of treatment is parenteral antibiotics. Complications are seen mostly with MRSA and Staphylococcus aureus strains that produce Panton-Valentine leucocidin and in children who have underlying risk factors. Children with septic arthritis and complicated osteomyelitis often need surgical interventions.
Burnout Syndrome, Associated Factors and Coping Strategies of Jaffna Medical Students
Authors: Weerasinghe R. H. M. , Lakmali J. M. D. , De Silva B. H. K. G. , Kumar Ramya , Sathiadas M. G.
Published: August 2020

Introduction and objectives: Burnout syndrome (BOS) is seen amongst Medical students which leads to chronic stress and need coping mechanisms to overcome it. This study aims to determine the prevalence of BOS, associated factors and coping strategies adopted by students of the Faculty of Medicine, Jaffna. Methodology: This descriptive cross sectional institutional based study was carried out among first to fourth year medical students. Data were collected using a self-administered questionnaire. BOS was measured using the Oldenburg Burnout Inventory (Student version)1. Data was entered and analysed using SPSS version 26. Chi Squared was used to assess the associated factors. Ethical clearance was obtained from the Faculty of Medicine, Jaffna. Results: A total of 561 were considered and the response rate was 81%(455). Male Female ratio was 1:1.5. BOS was seen in 381(83.7%), 86.3% were females, 88.5% were Sinhalese and 88.8% lived in hostels. A total of 104(86.0%) had English difficulties, 85%(239) felt homesick, 84.3% spent <2hours in leisure activities and 86.6% missed main meals. BOS was significantly associated with year of study(p=0.048), performance at examination(p=0.019), Use of social media(p=0.021), dietary habits(p=0.027) and interaction with teachers(p=0.032). The coping strategies were being positive(88.1%), getting advice(75.6%), listening to music(77%), finding comfort in religious activities(77.4%) and getting emotional support(77.9%). Keeping feelings to one’s self and solving problems alone(54.5%) were commonly reported avoidant strategies. Conclusion: BOS among medical students is seen and some groups are more vulnerable. Year of study, performance at examination, dietary habits, use of social media and interaction with teachers contributed to the BOS.
Uptake of Pharmacological Prophylaxis for Venous Thromboembolism in Postpartum Women After Introduction of Formal Risk Assessment Tool – A Quasiexperimental Study
Authors: Muhunthan K. , Guruparan K. , Jothiji S. , Aranee B.
Published: August 2020

Risk estimation and prophylactic treatment of maternal morbidity and mortality due to thromboembolism through a standard formal VTE risk assessment tool with numerical scoring is more effective in clinical decision making and management than not using a scoring system. This study was designed to assess the risk factors and prospectively measure the uptake of pharmacological prophylaxis for postpartum VTE before and after introducing a standard risk assessment scoring tool. MethodsThe study was conducted in 200 postpartum women aged 18–39 without randomization. They were prospectively followed before and after introduction of a standard formal venous thromboembolism risk assessment tool with numerical scoring. Individual risk scoring and the uptake of pharmacological prophylaxis for venous thromboembolism were analysed descriptively. Data was collected from the postpartum mothers’ case notes in the postnatal ward without interfering the clinical practice of the ward. ResultsOf the 100 postpartum mothers 43 were entitled for postpartum pharmacological prophylaxis for venous thromboembolism and of them 19% (8/43) were treated with enoxaparin when a risk assessment tool with numerical scoring was not used. This uptake rate was 74% (29/39) among the subsequent 100 postpartum mothers after a risk assessment tool with numerical scoring was introduced which was statistically significant. This significant improvement of the uptake of pharmacological prophylaxis was mainly observed in the group which scored 2 points than who scored ≥3 during the risk scoring. Among the 82 postpartum women who were entitled for pharmacological prophylaxis for postpartum VTE parity of ≥3 was the single most common risk factor being 40% and the elective and emergency caesarean section being 32% and 26%. ConclusionUptake rate of pharmacological prophylaxis for postpartum VTE in mothers can be significantly improved by using a standard risk assessment tool rather than using clinical judgement alone.
Large Anterior Vaginal Wall Cyst in Pregnancy
Authors: Raguraman S. , Dilinika M. M. S. , Kanagallingam A.
Published: August 2020

Vaginal wall cysts are uncommon and are broadly classified according to the lining epithelium of the cyst into epithelial inclusion cysts, embryonic (Müllerian and Gartner’s) cysts and urothelial cysts. Müllerian cysts are the commonest congenital cysts of the vagina. We present a case report of a 36 yearold pregnant woman presented the first time in her life with anterior vaginal wall cyst on her second pregnancy. A systematic clinical approach such as history, examination and investigations (imaging studies) was an aid to plan out the management.
Antisynthetase Syndrome: An Under Recognized Rare Disease in a Developing Country
Authors: Nirooshika S. , Sivansuthan S. , Aravinthan N.
Published: August 2020

Anti-synthetase syndrome (ASS) is an autoimmune disease characterized by the presence of auto antibodies against one of many aminoacyl transfer RNA synthetases and spectrum of clinical manifestations. Here we report a case of a 52 year old lady who had been extensively evaluated for progressive muscle weakness in a tertiary care center, diagnosed as Antisynthetase syndrome which was evidenced by the presence of antisynthetase antibody, dermatomyositis, Raynaud’s phenomenon, arthritis and mechanics hand. Despite aggressive management with intravenous immunoglobulins, steroids and immune suppressors she died because of underlying respiratory failure causing difficulty in weaning off ventilator.
Compendium of Vascular Variations in the Anterior Cervical Region and Right Upper Limb – A Case Report
Authors: Udhayakumar S. , Kalaiyukan S. , Srishankar S.
Published: August 2020

It is axiomatic that knowledge of variations of the major vessels is crucial, not only from anatomical standpoint, but also clinically. During the routine dissection for undergraduate study in Department of Anatomy, Faculty of Medicine, University of Jaffna, Sri Lanka, we came across compendium of vascular variations. Brachiocephalic trunk originated to the left of midline and its branches, the right common carotid and subclavian arteries, crossed the cervical trachea in front from left to right just above the left brachiocephalic vein. The right axillary artery divided into radial and ulnar arteries at the level of lower border of the teres major and these two branches travelled between the biceps brachial and median nerve. Radial artery took the course of the brachial artery in the arm and cubital fossa. Ulnar artery passed in a deeper plane in the arm medial to the biceps brachii and radial artery and passed deep to pronator teres and continued in the forearm lateral to the ulnar nerve as usual. The lateral root of median nerve crossed in front of axillary to unit with the medial root to form the median nerve, which coursed medial to the radial and ulnar arteries in the brachium The aim of this case reportis to compare with the variations reported and to discuss its clinical implications. In conclusion, we present a report of multiple arterial variations in the anterior cervical region and upper limb. Correct identification of variations is necessary for clinical practice, appropriate invasive techniques and to avoid complications.
Collocations in the Croatian Web Dictionary - Mrežnik
Authors: Hudeček Lana , Mihaljević Milica
Published: August 2020

The Croatian Web Dictionary – Mrežnik project aims to create a free, monolingual, easily searchable, hypertext, born-digital, corpus-based dictionary of the Croatian standard language. Collocations play an important role in Mrežnik. At the outset of the Mrežnik project, the concept of collocations and their presentation was modelled after the elexiko project. However, this concept was modified during the project on the basis of corpus analysis. This paper will outline the presentation of collocations of headwords of different word classes. Some important issues connected with collocations in Mrežnik are collocation extraction methods, collocations as a means of differentiating meanings and extracting new meanings, the use of stylistic and terminological labels in collocations, and the relationship of collocations with normative and pragmatic notes, definitions, and subentries.