bluuebunny/crossref_metadata_2025 huggingface dataset:
Assessing the Prevalence and Predicting Factors of an Abnormal Gated Myocardial Perfusion SPECT in Asymptomatic Patients with Type 2 Diabetes
Authors: Hosseinzadeh Elinaz , Ghodsirad Mohammad ALi , Alirezaei Toktam , Arefnia MAryam , Amoui Mahasti , Pirayesh Elaheh , Norouzi Ghazal , Khoshbakht Sepideh
Published: May 2021

Abstract Introduction: Considering the significant prevalence of silent
myocardial ischemia and its related morbidity and mortality in
asymptomatic type two diabetic patients, it is not well known whether
early screening with MPI is cost-effective. However, predicting factors
are not elucidated. Materials and Methods: This was a cross-sectional
study including 63 asymptomatic patients with type 2 diabetes mellitus
(T2DM), with normal ECG and ejection fraction. Patients with any history
of documented valvular, congestive or ischemic heart disease, renal or
hepatic failure were excluded. At first all patients were interviewed
and checked for risk factors and then patients underwent a two-day
rest/stress 99mTc-MIBI gated MPI SPECT. Data was assessed by QPS/QGS and
4DM software and evaluated by a nuclear medicine specialist with summed
stress score (SSS) of more than 4 defined as CAD. Results: There were 42
females (67%) and 21 males (33%), with a mean age of 61.33 ± 6.98
years and 7.97 ± 4.86 years history of T2DM. CAD was detected in 26
(41.3%) patients and was significantly associated with male gender,
smoking, requiring insulin therapy and EF (P-value = 0.019, 0.046, 0.05,
0.033, respectively). A significant association was found between the
duration of diabetes, especially when >15y, and the
probability of having CAD.. Multivariable logistic regression revealed
that smoking; male gender and diabetes duration were the strongest
independent predictors of abnormal MPI results. Conclusion: We found a
high (46%) prevalence of abnormal stress MPI SPECT in patients with
type 2 diabetes mellitus, despite being asymptomatic. Asymptomatic
patients with a history of smoking, long duration of diabetes, being
under insulin treatment and male gender might benefit from MPI for early
detection of silent ischemia. Keyword: 99mTc-MIBI; Gated Myocardial
Perfusion Imaging; Type 2 Diabetes Mellitus; Silent Ischemia;
Asymptomatic CAD; Early Screening
Response surface methodology for the study of interactions between components in a micellar system formulation
Authors: Omari Souhila , Nedjhioui Mohamed , Hamidi Nadjia , Benkortbi Othmane , Bouarra Nabil
Published: May 2021

This work aims to examine the interaction of certain physicochemical
properties on micellar systems constituted of a polymer (sodium alginate),
two surfactants (CTand tween 80), and Algerian olive oil. Response surface
modelling (RSM) was applied to study the combined effects of systems
containing each type of surfactant. The monitoring of four independent
parameters such as the interfacial tension (Y1), the conductivity (Y2), the
viscosity (Y3), and the turbidity (Y4) as responses for the experimental
design model allowed to determine the performance of the models established.
Based on statistical analyzes, the coefficients R2 and Q2 for the interfacial
tension, the conductivity, the viscosity and the turbidity are: 0.998 and
0.805; 0.982 and 0.742; 0.976 and 0.734, and 0.985 and 0.723; respectively.
The obtained results indicate that these models showed a good predictive
power for an optimal system composed of CTAB, Tween 80, AlgNa, and olive oil.
For the CT/ AlgNa and CT/ olive oil systems, interfacial tension values
of 33.85 and 34.39 mN m-1. Maximum conductivity values of 4.126 and 4.064
mScm-1 were also obtained. For viscous compounds consisting of AlgNa / Olive
Oil and AlgNa / Tween 80, maximum viscosity values of 202.5 and 196.6 mPa s
were obtained. For the same systems as those for viscosity, turbidity values
of 300 and 304 NTU were obtained.
Impact of Turkish policy reform on labor force status of disabled males: A difference-in-difference analysis
Authors: Düzgün-Öncel Burcu , Karaoğlan Deniz
Published: May 2021

This paper aims to study the effect of a Turkish policy reform enacted in 2008 that requires firms to hire disabled applicants. Our attention is only on males to avoid complications arising from gender differences in disability and labor force participation. The data is from the Turkey Health Survey (THS) of the Turkish Statistical Institute (TurkStat) for the years 2008 and 2012. We define ?disability? as an impairment of long-term health conditions that lasts more than six months and that restricts the individual in daily activities. We use difference-in-difference (DD) estimation, in which the DD estimator is the difference between disabled and non-disabled individuals in the difference in labor force participation before and after the new policy. The results suggest an insignificant effect of the treatment on the treated, implying that the policy reform does not create any incentive for disabled males to participate in the labor force.
Analysis of equilibrium dispersive model of liquid chromatography considering a quadratic-type adsorption isotherm
Authors: Ur Rehman , Muneer Adeel , Qamar Shamsul
Published: May 2021

A single-component equilibrium dispersive model of liquid chromatography is solved analytically for a quadratic-type adsorption isotherm. The consideration of quadratic isotherm leads to a non-linear advection-diffusion PDE that hinders the derivation of analytical solution. To over come this difficulty, the Hopf-Cole and exponential transformation techniques are applied one after another to convert the given advection-diffusion PDE to a second order linear diffusion equation. These transformations are applied under the assumption of small non-linearity, or small volumes of injected concentrations, or both. Afterwards, the Fourier transform technique is applied to obtain the analytical solution of the resulting linear diffusion equation. For detailed analysis of the process, numerical temporal moments are obtained from the actual time domain solution. These moments are useful to observe the effects of transport parameters on the shape, height and spreading of the elution peak. A second-order accurate, high resolution semi-discrete finite volume scheme is also utilized to approximate the same model for non-linear Langmuir isotherms. Analytical and numerical results are compared for different case studies to gain knowledge about the ranges of kinetic parameters for which our analytical results are applicable. The effects of various parameters on the mechanism are analyzed under typical operating conditions available in the liquid chromatography literature.
Nyutdannede læreres opplevelse av læreryrket
Authors: Brandmo Christian , Tiplic Dijana
Published: May 2021

Beginning teachers’ job perceptions

Over the last decade, the lack of qualified teachers in schools has been the subject of both research and political debate in many countries. In this study, we have investigated the factors that predict beginning teachers’ perceptions of job satisfaction, stress, and thoughts about quitting the job. The sample consisted of a total of 597 beginning teachers (65% women) from Norway. The results show that women experience higher job satisfaction and more stress at work than men do. The beginning teachers who said teaching was their first choice of career reported higher satisfaction with the profession and had fewer thoughts about quitting. Furthermore, the results show that beginning teachers are more satisfied than their more experienced colleagues with the profession and their school, a trend that was also reported by TALIS 2013. When it comes to beginning teachers’ own competence, the results show that self-efficacy in classroom management is significantly related to both higher satisfaction with their school and less stress. Regarding organizational factors, the findings show that commitment to and support from the school organisation are significantly related to higher satisfaction with the workplace. The study has several implications for school leaders and decision makers.
Electrochemical Determination of Dopamine and Uric Acid Using Poly(proline) Modified Carbon Paste Electrode: A Cyclic Voltammetric Study
Authors:   Department of Chemistry, FMKMC College, Madikeri, Constituent College of Mangalore University, Karnataka, India, D’ Souza Edwin S. , Manjunatha Jamballi G. ,   Department of Chemistry, FMKMC College, Madikeri, Constituent College of Mangalore University, Karnataka, India, Raril Chenthattil ,   Department of Chemistry, FMKMC College, Madikeri, Constituent College of Mangalore University, Karnataka, India
Published: May 2021

A cyclic voltammetric technique was used for electropolymerisation of proline on the surface of carbon paste electrode and for individual and concurrent determination of dopamine (DA) and uric acid (UA). The surface morphology of the developed electrode was studied by using field emission scanning electron microscopy. The modified electrode showed a high current response towards DA as compared to the bare electrode. The developed modified electrode shows good catalytic activity with a different oxidation potential of DA and UA. The electrode process was found to be adsorption controlled. The developed method shows very good stability and reproducibility. Under the optimized conditions, the concentration range is (1‒2)∙10-4 M and the observed detection limit was 4.7∙10-6 M. The developed sensor was applied for the determination of DA in the real sample with a good recovery.
A Modeling Study of Operating Conditions and Different Supports on Fe-Co-Ce Nanocatalyst and Optimizing of Light Olefins Selectivity in the Fischer-Tropsch Synthesis
Authors:   Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran, Lari Tahereh Taherzadeh , Mirzaei Ali Akbar ,   Department of Chemistry, Faculty of Science, University of Sistan and Baluchestan, P.O. Box 98135-674, Zahedan, Iran, Atashi Hossein ,   Department of Chemical Engineering, Faculty of Engineering, University of Sistan and Baluchestan, P.O. Box 98164-161, Zahedan, Iran, Bozorgzadeh Hamid Reza ,   Catalyst Division, Research Institute of Petroleum Industry (RIPI), Tehran, Iran
Published: May 2021

This study demonstrates the effect of operating conditions (Red-GHSV, inlet H2/CO, Oprat-GHSV) and the effect of Fe-Co-Ce nanocatalyst support. A statistical model using the response surface methodology (RSM) was applied with the target of achieving higher olefins selectivity in Fischer-Tropsch synthesis, which indicates the interaction effects of factors. The conditions under which three objectives optimization for maximizing olefins and minimizing paraffins and methane were determined. Synthesized nanocatalysts with various supports were characterized by XRD, SEM and TPR techniques
Green Polymerization of Vinyl Acetate Using Maghnite-Na+, an Exchanged Montmorillonite Clay, as an Ecologic Catalyst
Authors:   Laboratory of Polymer Chemistry, Department of Chemistry, Faculty of Exact and Applied Sciences, University Oran1 Ahmed Ben Bella, BP 1524 El M'Naouar, 31000 Oran, Algeria, Cherifi Badia Imene , Belbachir Mohammed ,   Laboratory of Polymer Chemistry, Department of Chemistry, Faculty of Exact and Applied Sciences, University Oran1 Ahmed Ben Bella, BP 1524 El M'Naouar, 31000 Oran, Algeria, Bennabi Souad ,   Laboratory of Polymer Chemistry, Department of Chemistry, Faculty of Exact and Applied Sciences, University Oran1 Ahmed Ben Bella, BP 1524 El M'Naouar, 31000 Oran, Algeria
Published: May 2021

In this work, the green polymerization of vinyl acetate is carried out by a new method which consists in the use of clay called Maghnite-Na+ as an ecological catalyst, non-toxic, inexpensive and recyclable by a simple filtration. X-ray diffraction and scanning electron microscopy showed that Maghnite-Na+ is successfully obtained after cationic treatment (sodium) on crude maghnite. It is an effective alternative to replace toxic catalysts such as benzoyl peroxide and azobisisobutyronitrile which are mostly used during the synthesis of polyvinyl acetate (PVAc) making the polymerization reaction less problematic for the environment. The synthesis reaction is less energetic by the use of recycled polyurethane as a container for the reaction mixture and is considered as a renewable material and a good thermal insulator maintaining the temperature of 273 K for 6 h. The reaction in bulk is also preferred to avoid the use of a solvent and therefore to stay in the context of green chemistry. In these conditions, the structure of obtained polymer is established by 1H NMR and 13C NMR. Infrared spectroscopy (FT-IR) was also used to confirm the structure of PVAc. Thermogravimetric analysis showed that it is thermally stable and starts to degrade at 603 K while differential scanning calorimetry showed that this polymer has a glass transition temperature Tg of 323 K.
Removal of Fluoride from Drinking Water Using Protonated Glycerol Diglycidyl Ether Cross-Linked Chitosan Beads
Authors:   Department of Chemistry, University of Kelaniya, Kelaniya, Sri Lanka, Pathirannehe P.N.S. , Fernando T.D. ,   Department of Chemistry, University of Kelaniya, Kelaniya, Sri Lanka, Rajapakse C.S.K. ,   Department of Chemistry, University of Kelaniya, Kelaniya, Sri Lanka
Published: May 2021

In this study, physically and chemically modified chitosan; protonated glycerol diglycidyl ether cross-linked chitosan beads (GDCLCB/H+) were prepared and characterized using FTIR and SEM. The optimum defluoridation capacity (DC) of GDCLCB/H+ was observed at the initial F- ion concentration of 15 mg/l, adsorbent dosage of 0.6 g, contact time of 30 min and pH of the solution was in the range of 5–7 at 303 ± 2 K. The equilibrium adsorption data fitted well with Langmuir and Freundlich isotherm models. The maximum adsorption capacity (q0), obtained from Langmuir isotherm for F-adsorption was found to be 2000 mg/kg, which was significantly higher than that of unmodified chitosan (192.3 mg/kg) and most of the chitosan-based sorbents reported in the literature. Water samples collected from Medawachchiya, Sri Lanka, were treated with the adsorbents and the results suggested that GDCLCB/H+ could be used as an effective defluoridation agent.
Measurement and Correlation of Isobaric Vapor-Liquid Equilibrium Data for Water + 2-Azido-N,N-Dimethylethanamine System at 4 kPa
Authors:   Faculty of Chemistry & Chemical Engineering, Malek Ashtar University of Technology, P.O. Box: 16765/3454, Tehran, Iran, Rouhandeh Hosein , Pakdehi Shahram Ghanbari ,   Faculty of Chemistry & Chemical Engineering, Malek Ashtar University of Technology, P.O. Box: 16765/3454, Tehran, Iran
Published: May 2021

Isobaric vapor-liquid equilibrium (VLE) data for binary system of water + 2-azido-N,N-dimethylethanamine (DMAZ) was measured at 4 kPa. The results showed an azeotropic point at x1 = 0.985 and T = 302.17 K. The data was correlated with nonrandom two-liquid (NRTL), Wilson and universal quasi-chemical activity coefficient (UNIQUAC) models for the liquid phase. A comparison of the model performances was made using of the criterion of the average absolute deviation, standard deviation and mean standard deviation in boiling-point temperature. The results indicated that the NRTL activity coefficient model satisfactorily correlated the VLE data.
Cellulose Acetate Hollow Fiber Membranes from Banana Stem Fibers Coated by TiO2 for Degradation of Waste Textile Dye
Authors:   Faculty of Science and Technology, Universitas Airlangga, Campus C Mulyorejo, 60115 Surabaya, East Java, Indonesia, Wafiroh Siti , Abdulloh Abdulloh ,   Faculty of Science and Technology, Universitas Airlangga, Campus C Mulyorejo, 60115 Surabaya, East Java, Indonesia, Widati Alfa Akustia ,   Faculty of Science and Technology, Universitas Airlangga, Campus C Mulyorejo, 60115 Surabaya, East Java, Indonesia
Published: May 2021

Cellulose acetate hollow fiber membrane from banana stem fibers coated by TiO2 (CAHFMT) was prepared and characterized as an alternative material for degradation of waste textile dye. Its applicability was demonstrated by mechanical properties, FTIR, SEM, thermal resistance, performance, and degradation efficiency. Cellulose acetate (CA) was synthesized from banana stem fibers by swelling stage, acetylation reaction, and hydrolysis reaction. CA was modified using TiO2 of various concentrations. CAHFMT with 22 % w/v dope concentration has the optimum mechanical properties (stress, strain and Young’s modulus), as well as hydrophilic properties. The performances of CAHFMT with Congo red were determined. The SEM results showed that the membrane had rigid pores. Moreover, this research stated that CAHFMT could be a solution to overcome economical and effective problems.
Improvement of Critical Thinking Ability and Preparedness Assisted by Android-Based Media to Understand Landslide through Physics Learning
Authors: Labibah Ulfaturrona Nur , Mundilarto Mundilarto , Sulaiman Syazana Bt
Published: May 2021

This research aimed to understand the critical thinking ability improvement and preparedness assisted by Android-based media to understand landslides through physics learning and understand the effectiveness of the media. This research provides knowledge about disaster preparedness through physics learning in landslide-prone schools using Android media. This research used quasi-experimental with Control Group Design. The research subjects included tenth-grade students in class X (30 people) at SMA N 1 Kokap. The samples were selected using the lottery method and saturated sampling technique to determine the control and experiment groups (quasi-experimental with Control Group Design). The pretest and posttest were in the form of essay questions. The analysis data used independent sample T-test and effect size. The results show that the average critical thinking ability of the experimental class increased from 18.13 to 65.00, and the average preparedness increased from 68.75 to 81.88. The results of the independent sample t-test show the value of Sig. (2-tailed) on critical thinking ability was 0.000 and preparedness was 0.027 (Sig. (2-tailed) <0.05). Thus, it can be concluded that there are significant differences in critical thinking ability and disaster preparedness in the experimental class and the control class. The effect size of using an Android-based understanding of landslide natural disasters on students' critical thinking ability and preparedness is 2.0 with high effectiveness. Media landslides and landslides through Android-based physics learning can improve students’ critical thinking ability and disaster preparedness.
Shoah y palabras: la memoria como combate
Authors: Sneh Perla
Published: May 2021

El lenguaje no es inocente cuando se trata del exterminio, las palabras condicionan los actos de los hombres. Las palabras trascienden por completo la lingüística y reclaman su propia ética cuando devienen modos de combate, destrucción o redención. Esto no es ajeno a exterminios como los padecidos por los armenios a manos de los turcos y los judíos a manos de los nazis. Estas páginas buscan relacionar ambos sucesos y los modos de su memoria sin por eso caer en comparaciones fuera de lugar ni en banalizaciones desatinadas.
Malestares y resistencias frente a las interpelaciones de la Educación Sexual Integral. Un análisis del posicionamiento de docentes de educación física
Authors: Marozzi Jorgelina , Boccardi Facundo , Raviolo Andrea
Published: May 2021

En el área de la Educación Física (EF), la propuesta de la Educación Sexual Integral (ESI) problematiza la división tradicional por género e interpela prácticas educativas tradicionales, fuertemente institucionalizadas, en pos de incluir diferentes lenguajes creativos y expresivos que promuevan una diversidad de prácticas corporales. El siguiente trabajo presenta resultados de una investigación desarrollada en Córdoba que indagó las resistencias docentes frente a la implementación de la ESI. Se analizaron materiales discursivos recolectados en discusiones colectivas entre docentes de EF producidas en el marco de capacitaciones y en entrevistas individuales. En términos generales, las resistencias en torno a la clase mixta responden a la percepción de diferencias significativas entre varones y mujeres, la contradicción entre el deporte escolar mixto y el deporte hegemónico, la dificultad para elaborar construcciones didácticas y la lectura erótica del lenguaje y comunicación corporal de los/as estudiantes. Dichas resistencias, en la mayoría de los casos, evidencian desconocimiento del enfoque y modo de abordaje de la ESI. El estudio concluye con la necesidad de desmontar los supuestos del profesorado acerca del cuerpo, el género y el sentido de la EF en la escuela; y avanzar en capacitaciones sobre enfoques críticos que abran este espacio curricular a la propuesta de la ESI.
Ensino de dança de salão na educação física escolar: a orientação sexual em foco
Authors: De Freitas Claudino Igor , Zanotto Luana
Published: May 2021

Culturalmente reconhecida nas diferentes regiões brasileiras, as danças de salão tem como particularidade a formação de duplas, evidenciando a aproximação dos corpos e ampliação das relações interpessoais. Neste sentido, o presente estudo objetiva analisar o ensino das danças de salão em interface com a Orientação Sexual como tema transversal, na ótica dos estudantes em aulas de Educação Física. De abordagem qualitativa, fundamentada pela pesquisa-ação, foram implementadas e analisadas dez aulas duplas para uma turma de 9º ano do Ensino Fundamental de uma escola do interior do Estado de São Paulo, Brasil. Verificou-se que os estudantes demonstram desinteresse pelo aprendizado das danças e compreensões incipientes acerca da discussão de gênero. Incisivamente, as meninas expressaram receio em serem hostilizadas pelos comentários machistas e preconceituosos. Embora o respeito ao próximo tenha sido evidenciado como valor primordial à aprendizagem das danças, de modo geral, os estudantes não demonstraram reconhecimento das problemáticas inerentes ao tema, dificultando a desconstrução para construção de novas significações. O estudo demonstra que o trato da Orientação Sexual pode estar atrelado ao ensino da dança. Para tanto, prescinde estratégias articuladas de planejamento e ação para superação das condutas discriminatórias na escola.
El género debajo de la colchoneta. Conversaciones sobre cuerpo(s) en Educación Física
Authors: Cuello María Flavia , Martínez Alicia Soledad
Published: May 2021

El siguiente artículo refiere a un análisis de una experiencia de taller virtual, al que fuimos invitadas para conversar acerca de la Educación Física y el género. Pareciera que en algunos espacios de la Educación Física, hablar de género y sexualidades es una temática en la que suscita el silencio y el ocultamiento. La intención de pensar lo oculto del género en la Educación Física nos llevó a preguntarnos por el modo de mirar los cuerpos, que aparece en este campo disciplinar. A partir de los diálogos con lxs participantes de la charla: “El género debajo de la colchoneta. Conversaciones sobre cuerpo(s) en Educación Física” , emergen elementos que van dando cuenta de los modos de mirar lxs cuerpos y nos da lugar a revisitar las zonas en las que se cristaliza el saber de la disciplina y los recorridos, rasgos y trazos teóricos que fueron construyendo la manera de mirar el cuerpo en la pedagogía corporal, para pensar los límites de una posible educación sexual en clave de Educación Física.
Sob comando deles: as barreiras para mulheres técnicas nas equipes olímpicas brasileiras
Authors: Almeida William Douglas de , Freitas Rovilson De
Published: May 2021

Este artigo tem como objetivo discutir os obstáculos impostos a mulheres brasileiras para assumir cargos como treinadoras em seleções nacionais. Como método, é feita uma revisão bibliográfica sobre a temática e trabalha-se com a narrativa biográfica da única mulher a comandar uma seleção brasileira de uma modalidade coletiva em Jogos Olímpicos, Maria Helena Cardoso, técnica do time de basquete em Barcelona-1992. Como resultados e conclusões, constata-se que ainda há um machismo no esporte brasileiro, que impede às mulheres ascender a cargos de comando em equipes nacionais.
¿Hace la diferencia ser diputada? Percepciones sobre género, derechos y libertades en América Latina
Authors:   Catedrático de Ciencia Política, Universitat de Girona, Martí i Puig Salvador , Serra Macià ,   Investigador y profesor de Ciencia Política, Universitat de Girona, Ubasart-González Gemma ,   Profesora de Ciencia Política, Universitat de Girona
Published: May 2021

El artículo explora la percepción de las élites parlamentarias de 17 países latinoamericanos sobre cuestiones morales y relativas al género a través de encuestas realizadas entre 2012 y 2019. En concreto, analiza la opinión respecto a la desigualdad entre hombres y mujeres, las políticas públicas para reducirlas, la posibilidad de hacer carrera dentro del partido, el aborto y el matrimonio homosexual. El análisis muestra las diferencias entre países y si las variables de género, ideología del partido o edad contribuyen a explicar las respuestas. Los hallazgos apuntan que en muchos países el género contribuye a explicar la opinión sobre la desigualdad entre hombres y mujeres y, en menor medida, el matrimonio igualitario. Los datos inducen a pensar, además, que la ideología es la variable que más influye en la percepción de las otras tres cuestiones. En las conclusiones se reflexiona sobre representación programática y descriptiva según los temas y países.
¿Desde lo nacional o lo local? El camino de las mujeres al Congreso en la región andina y Chile
Authors:   Oficial de Programa Senior, Natural Resource Governance Institute (NRGI, Londres), Batlle Margarita , Lucía Miranda Leibe Lucía ,   Profesora asistente adjunta, Instituto de Ciencia Política, Pontificia Universidad Católica de Chile, y docente, Facultad Latinoamericana de Ciencias Sociales (FLACSO, Chile), Suárez-Cao Julieta ,   Profesora asociada, Instituto de Ciencia Política, Pontificia Universidad Católica de Chile
Published: May 2021

Este artículo analiza las trayectorias políticas de las congresistas en Bolivia, Colombia, Ecuador, Perú y Chile entre 2009 y 2016. Se clasifican sus trayectorias según su experiencia previa y los niveles territoriales donde ganaron elecciones antes de ingresar al Congreso, pudiendo ser estas novatas o profesionales. Las profesionales tenían experiencia política previa, ya fuera a escala nacional o subnacional, incluyendo las reelectas (incumbentes). Pese a los diferentes diseños institucionales de cada país, para la gran mayoría, el primer cargo que ocuparon en política fue en el ámbito nacional, en el Congreso (novatas). Entre las profesionales e incumbentes, para Chile, Ecuador y Perú la mayoría de las congresistas iniciaron su trayectoria a escala nacional, mientras que en Colombia y Bolivia comenzaron en el nivel subnacional.
Políticas públicas: una herramienta de aceleración de la igualdad de género
Authors:   Investigadora predoctoral FPI en Ciencias Sociales, Universidad de Salamanca, Lahoz-Lorenzo Paula
Published: May 2021

Reseña de libro: Profeta, Paola. Gender Equality and Public Policy: Measuring Progress in Europe. Cambridge University Press, 2020. 211 págs.
La transversalidad de género y su poder de influencia: ¿hacia una igualdad efectiva en la UE?
Authors:   Analista de asuntos internacionales, colaboradora externa del Instituto Español de Estudios Estratégicos (IEEE), Navarro Sanz Beatriz , Sanz Gómez Mª Mercedes
Published: May 2021

En los últimos 25 años, la Unión Europea (UE) ha incorporado la transversalidad de género en sus planteamientos políticos oficiales en favor de la igualdad de género. El objetivo de este artículo es analizar la visión de la igualdad de género que ha inspirado el diseño y contenido de las políticas europeas (igualdad ad-intra), así como el poder de influencia de la transversalidad de género sobre la igualdad efectiva en los estados miembros (igualdad ad-extra). La adopción de este enfoque transversal se ha justificado por la posibilidad de garantizar la coherencia global de todas las actuaciones, al evitar solapamientos y permitir aumentar su eficacia y visibilidad. Sin embargo, su incorporación efectiva en las políticas europeas sigue siendo una asignatura pendiente, su implementación está fragmentada y los avances en la igualdad de género han sido lentos y desiguales.
The Competence of Professors of Physical and Sports Education in the Use of Modern Teaching Strategies for Middle School Under the Second Generation Curriculum
Authors: Abdarahmane Bengueneb , Ahmed Atallah , Bendehiba Djourdem
Published: May 2021

The study aims at identifying the degree of competency of the teacher of physical education and sports in using modern teaching strategies in light of what was stipulated by the second generation. The Study sample consists of 60 intermediate education teachers, and relies on a list prepared by the research team consisting of two axises, each axis containing 16 items that include familiarity with and employing modern strategies in the study of physical education and sports, as well as the general organization of the lesson the data are processed statistically using the arithmetic means standard deviation, and the results showed that the teachers of Physical education and sports in middle school do not use modern teaching strategies. This is due to their lack of competence.
Craniocervical flexion performance in computer users: An observational study
Authors: Patrao Ashmita Iora Davania , Correa Stephanie M , Kerkar Prachi Prakash , Vishal Kavitha
Published: May 2021

Study aim: To compare the performance of deep cervical flexors (DCF) among computer users (CU) and non-users using the craniocervical flexion test (CCFT).

Material and methods: Eighty nine computer users and 100 non-users were recruited for evaluation of their craniocervical muscle performance. The activation score and performance index were assessed using the CCFT. Comparison of craniocervical flexor performance between the two groups was evaluated using the Mann Whitney test. A Chi-Square test was used to test the association between age, years of work and craniocervical flexion. Significance was set at p ≤ 0.05.

Results: The median activation score was lower among computer users (median pressure-24 mmHg as compared to non-users (median pressure-28 mmHg) (p < 0.01). The performance index among computer users was lower when compared to non-users. Also, age (p < 0.001) and the years of work experience (p = 0.006) were associated with the DCF performance.

Conclusion: CU have lower activation and endurance of the DCF compared to non-users. The endurance of the DCF was associated with the age and years of computer usage.
Pastophorium in the Church of St. Catherine in Handlova in the Context of the Morphology of Gothic Pastophoria of Slovakia
Authors: Grúňová Zuzana
Published: May 2021

The project Geometric Analysis of Architectural Elements of Gothic Architecture in Handlová and its surroundings was dedicated to the documentation of stone Gothic elements of sacral buildings. The aim was to make photographs and drawings for the needs of maintenance and restoration of monuments and also to process geometric analyzes of suitable stone elements. Knowledge of the geometric construction, which is the basis of the design process, can help the correct renewal and presentation, possibly with the addition of missing parts or correction of previous inappropriate interventions. The article is focused on one type of element - pastophorium - niche, a box for storing sacral objects and the Eucharist hosts and its forms in the Gothic churches of Slovakia. The various forms of Gothic pastophorias in terms of the shape and context of the supporting wall of the temple and the stone decoration of the niche / box are briefly pointed out. Geometric analysis of one of the studied pastophores - in the church of St. Katarína in Handlová - forms the conclusion of the article.
Bending Performance of Half-Slab Styrofoam Mortar with Glazed Nylon Fiber
Authors: Solikin Mochamad , Falah Muhammad Fajrul , Sunarjono Sri , Hidayati Nurul , Trinugroho Suhendro , Sutanto Muslich Hartadi , Asnan Muhammad Noor
Published: May 2021

This paper scrutinizes bending performance of light weight half-slab mortar against bending and punching load. To produce the slab, 30 % round bud Styrofoam was used as fine aggregate substitution. Besides, glazed nylon fiber was applied to increase its tension strength and cavities at tension area of slab were also created. This method results in the significant reduction of self-weight of half-slab, while the cavities do not affect its bending performance and the fiber increases its ductility. Furthermore, the lower result of punching test should not to be a disadvantage as the slab is primarily to be used as a formwork.
Midblock U-Turn and Elevated U-Turn Safety and Economy Comparison: A Case Study Application
Authors: Ahmed Osama H. , Ramadan Ibrahim M. I. , Abdel-Monem Mohamed S.
Published: May 2021

In Egypt, intersections are encountering congestion and safety problems. Midblock U-turns have been used for solving these problems. The midblock U-turn increased the accidents, besides, it has limited capacity. In the last decade, elevated U-turns have been applied to solve these problems. The extensive use of elevated U-turns has not been accompanied by any research for studying the performance of elevated U-turns with respect to safety and economy. This paper developed a simple framework for comparing elevated and traditional midblock U-turns in terms of safety and economy. The study applied a case study to evaluate the two alternatives using a benefit-cost analysis technique. Although the results show the high cost of the elevated U-turns, it has been demonstrated to be the best solution since they provide the greater traffic capacity and lower accident rates. Accident number reported at elevated U-turns was 59 % less than the number associated with traditional U-turns.
Fragility Curve Analysis of Medium Cable Stayed Bridge
Authors: Masrilayanti Masrilayanti , Nasution Ade Prayoga , Kurniawan Ruddy , Tanjung Jafril , Sarmayenti Sarmayenti
Published: May 2021

The seismic performance of a bridge can be shown by analyzing the vulnerability of the structure in resisting an earthquake motion and then developing into fragility curves. This study presents a convenient method to establish the fragility curve for the cable-stayed bridge. For this purpose, three spans cable-stayed bridge is assessed using a series of seismic loads in different intensities to ensure that the structure was experiencing damage in several conditions. The fragility curve was obtained by analyzing the structure using Nonlinear Time History (NTHA) and Pushover Analysis. The ground motions of the earthquake were subjected to the bridge in different intensities, which were scaled from the initial ground motion. Hereafter, the structure’s ductilities were developed into the fragility curves as the responses of the bridge. HAZUS standard is used for classifying the damages of the bridge, which are grouped into; slight, moderate, extensive, and complete due to the seismic load. The values of the damage states were generated to the fragility curves using the probabilistic values of the damage states. To ensure the validity of the data statistically, Kolmogorov-Smirnov test was conducted to the fragility function. The result revealed that the fragility curve was qualified as the lognormal distribution.
Modified Reed Equation of Blast Load on Plate with Stiffener
Authors: Buwono Haryo Koco , Alisjahbana Sofia W. , Najid
Published: May 2021

The purpose of this study is to analyze numerically the effect of explosions on orthotropic slabs which have partial fixity placement and stiffeners in the x direction, namely in the short span direction. The modified blast load dynamic behavior is from Reed’s equation with 4th order polynomial on orthotropic plates with x-direction stiffener. The localized blast load centered in the middle of the strain, and the effects of thickness and stiffening on the vertical deflection of the plates are solved numerically using two auxiliary equations in the x and y-directions. It is found that there is vertical deflection with related to time.
Study of Biofilter Planted with Basil for Removal of Ammonia in Aquaponic Water
Authors: Mulay Bharat Nandkumar , Reddy Konda Rajasekhar
Published: May 2021

This experimental investigation of a laboratory scale aquaponic system included testing of a biofilter with basil plant as the biofilter part on aquaculture water quality. Irridescent shark was selected as aquaculture species. The biofilter consist of natural biomaterials such as coconut husk, coco peat, and coarse aggregates. The experiment was carried out for three short water recirculation durations of 2, 3, and 4 h/day. The influent and effluent ammonia NH3, total ammonia nitrogen (TAN), nitrites NO2 and nitrates NO3 levels were measured and analysed. The results showed that the biofilter effectively removed NH3 (65 - 71 %), TAN (34 - 58 %), and NO2 (60 - 67 %) from the aquaculture water. The dissolved oxygen (DO) levels were maintained between 3 - 7.0 mg/l during all the recirculation durations. The significance of water recirculation period was assessed by calculating the differences between the means of water quality parameters with a statistical test named one-way analysis of variance (ANNOVA) with significant level P taken as 5 %, i.e., P ≤ 0.5. The effluent mean NH3 levels 0.030 mg/l, 0.033 mg/l, and 0.022 mg/l exhibited significant difference at 4 h/d periods while effluent TAN levels 0.81, 0.77, and 0.77 showed no difference with varying periods.
Capacity Model for Single-Lane Minor Entry at Turbo-Roundabouts
Authors: Kociánová Andrea
Published: May 2021

Spirally arranged and physically separated traffic lanes in the circulatory carriageway of turbo-roundabouts force drivers to choose a particular entry lane and, subsequently, a circulatory traffic lane according to their intended destination. This specificity is taken into account in theoretical capacity models for two-lane turbo-roundabout entries typically evaluated by the lane-by-lane approach. Nevertheless, this specific path of movements is not considered in the most widely used capacity models for single-lane minor entries at oval turbo-roundabouts. In these models, only one entering traffic flow conflicted by two circulating traffic flows in front of the entry is considered. However, the entering traffic flow presents a mixed traffic flow of two movements (right-turning movement and left-turning and through movement) with different capacities due to different number of conflicting traffic streams and traffic volumes allocated into the outer and the inner circulatory lane. This fact is included in the capacity estimation for a single-lane minor entry presented in the article using the existing capacity formula for the mixed traffic flow on a shared minor lane at unsignalized intersections. The entry capacity reflects the proportion of the right-turning movement within a shared entry lane as well as the specific allocation of circulating traffic flow into the outer and the inner circulatory lane. This entry capacity is about 10 % to 30 % higher compared to a single-lane entry capacity estimated according to commonly used models described in the article. Higher entry capacity in a higher proportion of the right-turning traffic within mixed entry traffic flow is confirmed also by the results of average delays estimated by the theoretical delay model and microsimulation.
Impact of National Debt Burden on Economic Stability in Nigeria
Authors: Onyele Kingsley Onyekachi , Nwadike Emmanuel Chijioke
Published: May 2021

The study argues that national debt becomes a burden when debt overhang is rising, a foreign reserve is inadequate to cover short-term external debt and government revenue is inadequate for debt servicing. This paper investigates the impact of national debt burden on economic stability in Nigeria. Data spanning from 1981 to 2019 have been collated from the World Development Indicators and Central Bank of Nigeria Statistical Bulletin, 2019 edition. Consequently, the variables used to measure debt burden are total debt-to-GDP ratio (debt overhang), short-term external debt-to-reserves ratio (reserve adequacy) and debt service cost-to-government revenue ratio (revenue adequacy) with exchange rate as a control variable, while economic stability is measured with real GDP growth rate. The Autoregressive Distributed Lag (ARDL) model is used for the analysis since the variables are stationary at both levels and first difference. The ARDL estimation shows that the explanatory variables collectively cause a diminishing impact on economic stability in the long run with revenue adequacy having a negative and significant impact. In the short run, all the components of debt burden, except debt overhang, have a negative and significant impact on economic stability. Under this circumstance, exchange rate has a positive and significant impact on economic stability in the long run.
Strictness vs. flexibility: Simulation-based recognition of strategies and its success in soccer
Authors: Perl J. , Imkamp J. , Memmert D.
Published: May 2021

Introduction: Recognition and optimization of strategies in sport games is difficult in particular in case of team games, where a number of players are acting “independently” of each other. One way to improve the situation is to cluster the teams into a small number of tactical groups and to analyze the interaction of those groups. The aim of the study is the evaluation of the applicability of SOCCER© simulation in professional soccer by analyzing and simulation of the tactical group interaction.

Methods: The players’ positions of tactical groups in soccer can be mapped to formation-patterns and then reflect strategic behaviour and interaction. Based on this information, Monte Carlo-Simulation allows for generating strategies, which – at least from the mathematical point of view – are optimal. In practice, behaviour can be orientated in those optimal strategies but normally is changing depending on the opponent team’s activities. Analyzing the game under the aspect of such simulated strategies revealed how strictly resp. flexible a team follows resp. varies strategic patterns.

Approach: A Simulation- and Validation-Study on the basis of 40 position data sets of the 2014/15 German Bundesliga has been conducted to analyze and to optimize such strategic team behaviour in professional soccer.

Results: The Validation-Study demonstrated the applicability of our tactical model. The results of the Simulation-Study revealed that offensive player groups need less tactical strictness in order to gain successful ball possession whereas defensive player groups need tactical strictness to do so.

Conclusion: The strategic behaviour could be recognized and served as basis for optimization analysis: offensive players should play with a more flexible tactical orientation to stay in possession of the ball, whereas defensive players should play with a more planned orientation in order to be successful. The strategic behaviour of tactical groups can be recognized and optimized using Monte Carlo-based analysis, proposing a new and innovative approach to quantify tactical performance in soccer.
Significance of Hypouricaemia in the Development of Neurodegenerative Diseases
Authors: Trapp Maximiliane , Mihailova Anna , Kakurina Natalija , Murovska Modra
Published: May 2021

Hypouricaemia has received relatively little attention in the literature. As a result, there is less awareness or understanding of the potential risks of low uric acid levels. Emerging research indicates that normal uric acid levels may have an antioxidative and neuroprotective effect. This study aims to investigate possible associations between hypouricaemia and neurodegenerative disease. Data was collected from seventy-seven outpatients and inpatients who underwent routine uric acid testing, who were then stratified into patients with and without neurodegenerative disease. Patients with renal pathologies and patients using uric acid altering medications were excluded from the study. There was a significant difference in the prevalence of Alzheimer’s disease between hypouricemic and normouricemic patients (p = 0.001), however there was no difference in the prevalence of vascular dementia (p = 0.45). This study provides evidence that hypouricaemia has potential effects on health, specifically on the rate of neurodegenerative diseases such as Alzheimer’s disease and gives weight to the potential neuroprotective role of uric acid.
Vacuum-Assisted Abdominal Closure in Surgical Emergency: A Single Institution Experience Treating a Cohort with a Prevalence of Faecal Peritonitis
Authors: Skicko Dmitrijs , Gabrāne Baiba , Pupelis Guntars , Šuba Oļegs , Plaudis Haralds
Published: May 2021

Vacuum-assisted abdominal closure (VAAC) has evolved as a promising method for treatment of emergent surgical patients. The aim of the study was an assessment of the complication rate and outcomes following routine application of VAAC in a cohort of patients suffering predominantly with peritonitis of the lower gastrointestinal tract (GIT) origin. The prospectively collected data was analysed retrospectively, including demographic data, aetiological factors, comorbid conditions and severity of the disease. The indications for VAAC included complicated intra-abdominal infection, purulent peritonitis with sepsis and/or risk of increased intra-abdominal pressure. In total, 130 patients were managed with VAAC. The median age was 63.5 years, with a predominance of male patients (61.5%). Systemic inflammatory response was present in 68.5%, the median C-reactive protein (CRP) was 239.58 mg/l, Procalcitonin (PCT) level 7.02 ng/ml, and lactate 1.84 mmol/l before intervention. The median Sequential Organ Failure Assessment (SOFA) score was 4 and the Mannheim Peritonitis Index was 26. Sepsis developed in 87.0% of patients, and 43.8% had septic shock. VAAC was applied in 58.5% due to a perforation of the lower GIT, in 26.1% due to perforation of the upper GIT, and in 15.4% for other reasons. A median of two (interquartile range, IQR 1–3) VAAC system changes were performed in a period of 7 (IQR 4–11) days. In 88.6% of cases, multiple types of microorganisms were present. The application of VAAC resulted in a significant decrease of the postoperative SOFA score, and CRP, PCT and lactate levels (p < 0.001). The complications included a “frozen abdomen”, enterocutaneous fistula, intraabdominal abscess and bleeding in 7.7%, 5.4% and 6.0% cases, respectively. Primary abdominal closure was accomplished in 76.2%, resulting in a 23.1% mortality rate. VAAC was found to be safe in the treatment of abdominal sepsis including in patients with faecal peritonitis. Complete abdominal closure can be achieved in the majority of patients resulting in a lower mortality rate.
Acute Complicated Necrotising Pancreatitis Treated with Video-Assisted Retroperitoneal Debridement
Authors: Šapovalovs Sergejs , Ļiņovs Viktors , Gardovskis Andris , Lapsa Sintija , Pavārs Māris , Gardovskis Jānis
Published: May 2021

Acute necrotising pancreatitis is a complex disease with high morbidity and mortality rates. In cases of infected necrosis, treatment consists of a step-up approach involving endoscopic or mini-invasive surgical methods. In some cases, there are extremely rare complications. In addition, the underlying comorbidities worsen the course of the disease. We report a case of a 32-year-old male with acute necrotising pancreatitis complicated with recurrent retroperitoneal abscesses, sepsis, iatrogenic pylephlebitis, exacerbation of underlying Crohn’s disease, and the outcome of the treatment was successful. During the period of hospitalisation, one ultrasound-guided percutaneous drainage, two computed tomography-guided punctures of the retroperito-neal space (percutaneous and transhepatic) and five video-assisted retroperitoneal debridement procedures were carried out. The patient was discharged after 185 days of hospitalisation.