bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of the Fe/Cu Relationship Corrosion and low Alloying Elements on Corrosion Behavior of Cast Aluminum Parts
Authors: Rodríguez-Rivera C. , García-Hinojosa J.A. , Rodríguez-Gómez F.J. 
Published: November 2016

ABSTRACTThe aim of this study is to compare the corrosion rate of aluminum alloys for ornamental pieces. Three Fe/Cu relationships were tested in order to improve hardness and brightness in aluminum pieces since these alloys are used in the making of ornamental pieces. The variation on Fe/Cu content could result in modification on corrosion rate, since a metallographic characterization must be carried out identifying the presence of intermetallic phases. The presence of these elements could result in increasing corrosion rate, or even in modification of corrosion morphology, so localized corrosion could be expected.The assessment of corrosion rate was carried out in saline media, since chlorides are ions that promote localized corrosion. Electrochemical techniques (polarization curves and Tafel plots) were used in order to evaluate the attack in aluminum pieces; electrochemical impedance spectroscopy was also employed with voltage amplitude of 10 mV rms, and a frequency range from 10,000 Hz to 0.01 Hz. A typical three electrodes cell was used, exposing an area of one cm2. Before polarization, open circuit potential was monitored for an hour looking for a steady state. All conditions were tested for triplicate.The behavior of open circuit potential vs. time, and polarization curves was analyzed; a corrosion mechanism is proposed according to the electrochemical control. Polarization rate was calculated by using Tafel plots and, an electrochemical impedance spectroscopy analysis by using equivalent electric circuits is shown. Electrochemical impedance will yield information about corrosion morphology that is backed with microscopic inspection.The objective of this study is to compare the corrosion rate of aluminum alloys for ornamental pieces in order to determine the effect of the relationship Fe/Cu on the corrosion mechanism in aluminum parts for ornamental pieces.
Electrochemical and Mechanical Characterization of TiO2 Nanotubes Obtained by Anodic Oxidation at High Voltage
Authors: Sintillo S. Mejía , Arteaga C. Cuevas , Melgoza R. Ma. , Nacheva P. Mijailova 
Published: November 2016

ABSTRACTThe array of the TiO2 nanotubular films, also called one-dimensional nanostructures is carried out by electrochemical anodization tests, for which, titanium sheets were used with a high purity (99.7% and 0.25 mm thickness) in a solution of deionized water and glycerol (50:50 vol.%) + 0.27M NH4F applying a voltage of 20V. Electrochemical tests were performed at an anodization time of 2:30 hours and 3:30 hours. For the tests mirror polished foils and unpolished foils with flat surfaces to achieve better uniform arrays during the anodic growth of nanotubes were used. After anodizing, samples were observed in the scanning electron microscope (SEM) to determine the geometry and morphology of the films. Also, potentiodynamic polarization curves were performed for samples crystallized at 600 °C and 450 °C (polished and unpolished) to determine the electrochemical stability of the films, which were presented at two aqueous solutions: 1M of Na2SO4 (pH= 6.7) and 1M Na2SO4 + H2SO4 (pH= 3.2). Mechanical characterization was also performed by nanoindentation technique through the application of loading/unloaings of: (1, 2.5, 5, 10 mN). Chemical characterization was performed using XRD analysis, with the aim to determine the crystalline phases formed in the films crystallized at 450 °C and 600 °C. The electrochemical characterization showed that the TiO2 nanotubular film obtained by mirror polished and crystallized at 600 °C showed better electrochemical stability. Nanoindentation tests showed deformation curves, and the parameters such as hardness, Vickers hardness, elastic modulus and the maximum penetration depth were determined as mechanical parameters.
Inovasi produksi benih ikan nilem (Osteochilus haselti)
Authors: Sumedi Petrus , Sudiana Sudiana 
Published: November 2016

Abstrak lengkap dapat dibaca di full. PDFIkan nilem atau siver shark mirror (Osteochilus haselti) merupakan jenis ikan pemakan plankton atau plankton feeder, sehingga sering dijadikan ikan untuk introduksi atau restocking pada perairan danau atau waduk.
Infeksi Penyakit Parasitik pada Pendederan Ikan Lele (Clarias gariepinus)
Authors: Zainun Zakki 
Published: November 2016

Abstrak lengkap pada full. PDFSalah satu organisme patogen penyebab timbulnya penyakit di kolam pendederan ikan lele adalah parasit. Parasit akan menginfeksi ikan sehingga menyebabkan kerusakan pada organ dan merusak sistem metabolisme ikan.
KERAGAMAN GENETIK IKAN ENDEMIK BUTINI (Glossogobius matanensis) BERDASARKAN PENANDA RANDOM AMPLIFIED POLYMORPHISM DNA (RAPD) DI DANAU TOWUTI SULAWESI SELATAN
Authors: Mamangkey Jefry Jack , Sulistiono Sulistiono , Sjafei Djadja Subardja , Soedharma Dedi , Sukimin Sutrisno , Nugroho Estu 
Published: November 2016

Evaluasi keragaman genetik ikan endemik butini yang diambil dari Danau Towuti Sulawesi Selatan dilakukan dengan menggunakan penanda RAPD. Sampel ikan dikoleksi dari Danau Towuti yang terbagi atas tiga zone dan masing-masing zone memiliki kedalaman 25 m, 75 m, dan 150 m. Tidak terdapat perbedaan genetik yang nyata antar ketiga zone dari masing-masing kedalaman. Heterozigositas berkisar antara 0,0491—0,1861. Dendrogram berdasarkan 26 loci mengelompokkan secara garis besar kedalam dua kelompok yaitu kelompok ikan pada kedalaman 25—75 m dan kelompok ikan pada kedalaman >150 m.Evaluation of genetic variability of endemic fish, butini which catched from Towuti Lake - South Sulawesi has been conducted based on the RAPD marker. Fish sample collected from Towuti Lake that divided into three zone and with depth of 25 m, 75 m, and 150 m. There is no significant differentiation genetically among fish from three zone and depth. Heterozygosity was range between 0.0491 to 0.1861. Dendrogram based on the 26 loci divided the fish population generally into two group i.e. first group is consisted of fish collected from 25—75 m in depth and second one is constructed fish collected from >150 m in depth.
A PREVENÇÃO QUATERNÁRIA NAS PRÁTICAS DE SAÚDE DOS ESTUDANTES UNIVERSITÁRIOS
Authors: Gullherme Ribeiro Antunes Julia Mª 
Published: November 2016

Abstract.The University students are usually well educated, healthy, is a relatively homogeneous socioeconomic and relatively privileged group culture and “status”, being undoubtedly a potential future leadership that can influence with some ease other social groups at different times of the cycle life, taking on the role of change agents. They are also, will start, more motivated to knowledge about behaviors and healthy lifestyles. Show that attitudes towards issues of common health? Which actors, the itineraries of health and illness that question? Laymen, doctors, pharmacists, neighbors, friends, family? Or just wait & see? Were surveyed by questionnaire 502 college students from Health Sciences. It is an exploratory, descriptive and cross-sectional study which presents some results in this article, that it highlights the correlation of their health practices with the concept quaternary prevention, in which most of the time only involve the technique of wait & see. This is opposed to those that shaped the medicalization of our society in a very recent past. We may think of this social group as a motivator for profound changes in the practices of health/disease for next years, applying day by day, the concept and philosophy of quaternary prevention?Keywords: Health practices, quaternary preventionResumo.Os estudantes Universitários habitualmente são bem educados, saudáveis, são um grupo relativamente homogéneo e priveligiado relativamente a cultura e “status” socioeconómico, constituindo sem dúvida, um potencial de liderança futuro que poderá influenciar com alguma facilidade outros grupos sociais em diversos momentos do ciclo de vida, assumindo o papel de agentes de mudança. Estão também, à partida, mais motivados para os conhecimentos acerca de comportamentos e estilos de vida saudáveis. Que atitudes apresentam perante problemas de saúde vulgares? Quais os actores, nos itinerários de saúde – doença, que questionam? Leigos, médicos, farmacêuticos, vizinhos, amigos, familiares ? Ou apenas esperam que passe (wait & see)? Foram inquiridos através de questionário 502 estudantes universitários da área de estudos de Ciências da Saúde. Tratou-se de um estudo exploratório, descritivo e transversal do qual se apresentam alguns resultados neste artigo, em que ressalta a concordância das suas práticas de saúde com o conceito de prevenção quaternária, em que grande parte das vezes apenas envolvem a técnica da “espera“ (wait & see). Trata-se de atitudes opostas àquelas que modelaram a medicalização das nossas sociedades num passado muito recente. Poderemos pensar neste grupo social como motivador de mudanças profundas na práticas de saúde/doença dos anos vindouros, aplicando no dia a dia, o conceito e filosofia da prevenção quaternária?Palavras chave: Práticas de saúde, prevenção quaternária
IMPLICIT MEASUREMENTS OF ATTITUDES – INNOVATIVE APPROACH IN TRAINING OF PSYCHOLOGISTS
Authors: Plotka Irina , Igoin Dmlty , Blumenau Nina , Slmane-Vlagante Laura , Bambuljaka Marlja , Shaplavska Jelena , Ozola Elena 
Published: November 2016

Abstract.The paper presents the experience of team research work aimed at experimental study of attitudes by modern implicit methods. Involvement of students in the creative atmosphere creates the basis for the formation of a creative, competent and responsible psychologist who can then learn how to work in any of the areas of psychology. The results of empirical studies aimed at understanding of ethnic attitudes, hardiness, gambling addiction, alcohol abuse by implicit methods and self-assessment procedures are presented.Key words: Implicit Association Test, explicit method, unconscious affective priming, attitude
ENSEÑANZA EN LA EDUCACIÓN PRIMARIA Y VALORES: DIFERENCIAS ENTRE ESPAÑA E ITALIA TEACHING PRIMARY SCHOOL AND VALUES: DIFFERENCES BETWEEN SPAIN AND ITALY
Authors: Di Loreto Martina , Caggiano Valeria , Carbonero Miguel 
Published: November 2016

Abstract.Primary School teachers carry out a crucial role in education and future adults development, therefore it turns out to be fundamental to study their educational styles to identify the necessary competencies and skills to provide an education as complete and balanced as possible. The present research, starting from the already undertaken Spanish studies using the ECAD-EP scale (Self-Percieved Competencies Evaluation Scale), aims to investigate theaching styles inside an italian sample of primary school’s theachers, to compare them with the Spanish datas. Beside that, it deepens the personal values topic, to highlight the latter’s influence on theachers’ theaching styles.Keywords: teaching style; teachers’ evaluation; teachers’ values?; teachers’ self perceived competence; international comparisons between teachers; primary schoolResumen.Los docentes de escuela primaria tienen un rol crucial en la educación y desarrollo de los futuros adultos , por lo tanto, el estudio de sus estilos de enseñanza es fundamental para identificar las competencias y habilidades necesarias para proporcionar una educación lo más completo y equilibrado posible . En la presente investigación, a partir de los estudios ya realizados en España a través de la escala ECAD-EP escala (Escala de Evaluación de la Competencia Autopercibida Docente en Educación Primaria), tiene el objetivo de investigar los estilos de enseñanza en una muestra de docentes italianos de escuela primaria, para hacer una comparación con los datos de España. Además, se explora el tema de los valores personales , para poner de relieve la influencia de este últimos sobre el estilo de enseñanza de los docentes.Palabras clave: estilo de enseñanza; evaluación de los docentes; valores de los docentes; competencia autopercibida de los docentes; comparaciones internacionales entre docentes; escuela primaria.
QUALIDADE DA VINCULAÇÃO E COMPORTAMENTO ANTISSOCIAL NA INFÂNCIA
Authors: Henriques Brigite Micaela 
Published: November 2016

Abstract.The parent-child attachment is considered highly relevant to the development of prosocial and antisocial behavior. Even though the social changes, the family has been considered as a decisive factor in the development of disruptive behaviors. Research has sought to understand if the quality of the attachment established with the attachment figures (usually the parents) is or isn’t associated with future disruptive behaviour disorders in children. This article is a literature review, whose main purpose is to synthesize some of the studies, to understanding and explaining the relationship between attachment and behavior disorders in children.Keywords: attachment; antisocial behaviorResumo.Os laços afectivos entre as crianças e os pais são considerados bastante relevantes para o desenvolvimento do comportamento pró-social e antissocial. Apesar das mudanças sociais, a família tem sido considerada como um factor decisivo no desenvolvimento de comportamentos disruptivos. A investigação tem procurado compreender se a qualidade da vinculação estabelecida com as figuras de vinculação está ou não associada a futuros comportamentos disruptivos das crianças. Este artigo assenta na revisão da literatura, cujo objectivo consiste sintetizar alguns dos estudos realizados, para a compreensão e explicação da relação entre a vinculação e os problemas de comportamento da criança.Palavras-chave: vinculação; comportamento antissocial
EL PERDÓN EN LA MEMORIA AUTOBIOGRÁFICA: LA REESCRITURA DE LOS ACONTECIMIENTOS VITALES
Authors: Barahona Esteban Mª Nieves , Urchaga Litago José David , Sánchez Cabaco Antonio , Sánchez Zaballos Elena 
Published: November 2016

Abstract.The present research shows the role of forgiveness as a significant factor in the process of vital reconstruction through the call Autobiographical Memory (remembrance of events experienced). Forgiveness is a significant mechanism in the memory taken it as positive and therapeutic element. Positive Psychology has been studying this construct and endorsing it as a component to achieve happiness and wellbeing. In this research is analyzed the capacity to forgive, the characteristics of its definition and the reasons or circumstances that facilitate it, in a sample of 401 subjects (127 men and 274 women) of different ages (201 youth and 200 older) to observe whether there is a different conception of forgiveness according to age and sex. The results show that young people manifest less capacity to forgive, and men more motivation for revenge, in the definition of forgiveness, young and old consider reconciliation and lack of rancor as the most important factors, and respect to the facilitating factors of forgiveness, older give more importance to passing of time and religious beliefs, and youth for either repentance and ask for forgiveness, regardless of sex.Keywords: Forgiveness, Autobiographical Memory, Positive Psychology, Happiness, Gratitude.Resumen.La investigación realizada muestra el papel del perdón como factor significativo en el proceso permanente de reconstrucción vital a través de la llamada memoria autobiográfica (recuerdo de los sucesos vividos). El perdón es un elemento significativo en el mecanismo de la memoria tomado como elemento positivo y terapéutico. Desde la Psicología Positiva viene estudiándose este constructo y refrendándolo como componente para conseguir la felicidad y bienestar. En este estudio, se analiza la capacidad de perdonar, las características de su definición y las razones o circunstancias que lo facilitan, en una muestra de 401 sujetos (127 varones y 274 mujeres) de diferentes edades (201 jóvenes y 200 mayores) para observar si existe una diferente concepción de perdón dependiendo de la edad y el sexo. Los resultados muestran que los jóvenes manifiestan menor capacidad de perdonar, y los hombres mayor motivación de venganza; en la definición de perdón, tanto jóvenes como mayores consideran la reconciliación y la falta de rencor como los factores más importantes; y respecto a los elementos que facilitan el perdón, los mayores tienen como más significativos el paso del tiempo y las creencias religiosas, y los jóvenes que haya arrepentimiento y se pida perdón, sin distinción de sexo.Palabras clave: Perdón, Memoria autobiográfica, Psicología Positiva, Felicidad, Gratitud.
THE 3P AND DEDEPRO MODELS AS RESEARCH HEURISTIC
Authors: De la Fuente Jesús , Zapata Sevillano Lucía , Sander Paul , Cardelle-Elawar María 
Published: November 2016

Abstract.There are different heuristics that study the teaching-learning process; in this investigation we will explore the confluence of Biggs’ 3P model and the DEDEPRO model. These two complementary models offer us a framework for the analysis of teaching-learning situations with greater specificity and a better understanding of the structure of the research studies and the variables they study. In this manner, by incorporating both the general processes of teaching and learning, as well as the specific variables that are related to them, more or less analytical studies can be developed. Biggs adopted the 3P model to represent the student’s perspective in the teaching-learning process. The ways students learn are explained through the interaction of three moments in time that become the components for which the model is named: 1) Presage, where we find student characteristics and characteristics of the learning context; 2) Process, referring to the way that learning tasks are undertaken; and 3) Product, which includes learning outcomes. All the components that make up this model (Presage-Process-Product) tend toward equilibrium, and a change in any of them affects the system as a whole. In complementary fashion, the DEDEPRO model has established the need to further specify, within the Biggs model, the moments of Design (planning), Development (execution) and Product (satisfaction and performance), in terms of both teaching and learning. The DEDEPRO model assumes personal self-regulation, and is interactive with regulation in teaching, thereby giving rise to different levels of performance and personal satisfaction. In an overall sense, both models give us the opportunity to organize our variables over the teaching-learning process. We would emphasize the joint structure of the two models in relation to the variables in this study: Personal self-regulation, Stressful context (Presage); Learning approaches, Coping strategies, Self-regulated learning and Regulatory teaching (Process-Development); and Performance and Satisfaction with the learning process (Product).Palabras Clave: Biggs’ 3P Model, DEDEPRO, Teaching-Learning process
ENFOQUES DE APRENDIZAJE, COMPRENSIÓN LECTORA Y AUTORREGULACIÓN: ÚLTIMOS HALLAZGOS
Authors: García Berbén Ana Belén , Justicia Justicia Fernando , Cano García Francisco , Pichardo Martínez Mª Carmen 
Published: November 2016

Abstract.LEARNING APPROACHES, READING COMPREHENSION AND SELF-REGULATION: THE LATEST FOUNDTwo independent investigation lines, learning approaches and reading comprehension are related to reply to some difficulties that were found in high-school students. This paper attempts to show the findings in the study of the relations between: on one hand, a) reading comprehension (it is a process through students build a mental representation about the information in the text); b) previous knowledge and c) generation of questions; on the other hand, d) learning approaches (how they feel and deal with learning situations); e) self-regulation; f) academic achievement. 1.125 ninth-grade students from 28 schools of the metropolitan area of Granada took part in three studies (two with ex-post-facto design and one with a quasi-experimental design). Results from different studies showed relations between variables. In the conclusion, we indicate the mediator function of the questions and the importance of adopting a broad point of view about the comprehension in texts of sciences. Some implications about teaching-learning in sciences are mentioned.Keywords: learning approaches, reading comprehension, question generation, academic achievement.Resumen.Dos líneas de investigación independientes, enfoques de aprendizaje y comprensión lectora se relacionan para dar respuesta a algunas de las dificultades encontradas en los estudiantes de secundaria. El objetivo es presentar un resumen de los hallazgos obtenidos en el estudio de las relaciones entre: por una parte, a) comprensión lectora (proceso mediante el que los estudiantes construyen una representación mental de la información del texto); b) conocimiento previo y c) generación de preguntas; por otra parte, d) enfoques de aprendizaje (modo en que experimentan y abordan las situaciones de aprendizaje) e) autorregulación y f) rendimiento académico. Un total de 1.125 estudiantes de cuarto de secundaria, de 28 centros del área metropolitana de Granada, participaron en tres estudios (dos con diseños ex-post-facto y un tercero con diseño cuasi-experimental). Los resultados de los diferentes estudios mostraron relaciones entre las variables. Se concluye enfatizando el papel mediador de las preguntas así como la importancia de adoptar un punto de vista amplio sobre la comprensión de los textos de ciencias. Y se mencionan algunas implicaciones para la enseñanza-aprendizaje de las ciencias.Palabras clave: enfoques de aprendizaje, comprensión lectora, generación de preguntas, rendimiento.
LAS EMOCIONES QUE EXPERIMENTABAN LOS FUTUROS PROFESORES DE SECUNDARIA EN EL APRENDIZAJE DE LAS CIENCIAS
Authors: Borrachero Cortés Ana Belén , Dávila Acedo Mª Antonia , Brígido Mero María , Gómez del Amo Rosa , Mellado Bermejo Lucía 
Published: November 2016

Abstract.EMOTIONS EXPERIENCED BY FUTURE SECONDARY TEACHERS IN SCIENCE LEARNINGAlthough Science Teaching studies are increasingly taking emotions into account, few have dealt with prospective teachers. The present work analyses the emotions aroused in the science of 83 prospective secondary teachers enrolled in the Master’s Course in Teacher Education in Secondary Education at the University of Extremadura, in three specialities: Biology/Geology, Mathematics, and Physics/Chemistry. In general, prospective teachers experienced positive emotions in learning Biology, Geology and Chemistry, and mostly negative emotions towards the content of Physics and Mathematics. For this reason, it is necessary for the education of prospective teachers to include getting them to share their own school experiences, their emotions in teaching science, and how those emotions might influence how they teach and learn science.Keywords: emotions, teacher training, science, Secondary.Resumen.El plano afectivo en los estudios de Didáctica de las Ciencias cada vez cobra mayor importancia, sin embargo son pocos los trabajos dirigidos a los profesores en formación. En este estudio se analizaron las emociones despertadas en el aprendizaje de las ciencias de 83 futuros profesores de Secundaria que cursan el Máster Universitario en Formación del Profesorado en Educación Secundaria de la Universidad de Extremadura en tres especialidades: Biología/Geología, Matemáticas, y Física/Química. En general, los futuros docentes experimentaron emociones positivas en el aprendizaje de la Biología, la Geología y la Química, y mayoritariamente emociones negativas hacia los contenidos de la Física y las Matemáticas. Creemos necesario que los futuros docentes deben reflexionar sobre las experiencias educativas que han generado emociones positivas o negativas y de cómo estas emociones pueden influir en la enseñanza y el aprendizaje de las ciencias.Palabras clave: emociones, formación del profesorado, ciencias, Secundaria.