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Teaching Polymer Chemistry: Revisiting the Syllabus  [PDF]
Thierry Hamaide, Yves Holl, Laurent Fontaine, Jean-Luc Six, Armand Soldera
Open Journal of Polymer Chemistry (OJPChem) , 2012, DOI: 10.4236/ojpchem.2012.24018
Abstract: As anyone who has taught polymer chemistry to undergraduate students might already appreciate, we are faced with inherent difficulties in clearly communicating the subject matter due its interdisciplinary character. This paper is thus aimed at proposing a new educational plan to teach this fundamental course in order to overcome some inherent obstacles. It is especially devoted to professors in charge of teaching a first course in polymer chemistry. We intend to emphasize polymerization by beginning with the simplest chemical pathway, namely the living anionic polymerization. In addition, some pedagogical difficulties are outlined all along this paper. This novel and distinct way to teach polymer chemistry makes the students with a background in organic chemistry more equipped to face difficulties arising from the introduction of new concepts.
A história oral como prática no ensino de história: primeiras reflex es acerca de um projeto de pesquisa
Felipe Nobrega Ferreira,Lisiane Castro Soldera
BIBLOS : Revista do Instituto de Ciências Humanas e da Informa??o , 2008,
Abstract: As possibilidades de se trabalhar com a perspectiva da história oral em um projeto educacional s o cada vez mais emergentes no cenário escolar, pois tal metodologia permite com que o aluno vivencie a história em nível prático. Por isso, o presente artigo tem o objetivo de trazer à baila as primeiras considera es de um projeto dentro do ensino escolar de História que vem sendo efetuado desde agosto de 2007 e que opera a partir das prerrogativas da oralidade. Assim, fazem-se presentes neste artigo as atividades realizadas pelo projeto desde ent o, bem como as reflex es e algumas conclus es preliminares sobre o alcance de tal proposta.
Efecto de la modificación superficial de alambres delgados de acero inoxidable AISI 302 mediante plasma electrolítico sobre sus propiedades mecánicas
Gallegos, A.,Camurri, C.,Carrasco, C.,Soldera, F.
Revista de Metalurgia , 2012,
Abstract: In this work different tests using electrolytic plasma (EP) on thin wires of stainless steel AISI 302 in an inert solution were performed. Tensile tests were carried out in order to measure changes in the mechanical strength of the samples; moreover, both the morphological and microstructural changes also were evaluated. It was found that after 10 s of the application of EP, the samples surface was uniformly covered by nodules-like and craters similar to those found in the melting and cooling periods of EP. The results show a significant surface grain refinement, leading to crystalline arrangements with sizes less than 200 nm and also an increase in the samples tensile strength of at least 57 % respect to steel base. En este trabajo se realizaron ensayos de aplicación de plasma electrolítico (PE) sobre alambres delgados de acero inoxidable AISI 302 en una solución inerte. Las probetas se sometieron a ensayos de tracción, con el fin de medir cambios en su resistencia mecánica; adicionalmente fueron evaluadas en sus cambios morfológicos y microestructurales. Se encontró que después de 10 s de aplicación de PE, la superficie de las probetas estaba uniformemente cubierta por nódulos y cráteres propios del ciclo de fusión y enfriamiento del PE; se evidenció un significativo afinamiento del grano superficial, llegando a ordenamientos cristalinos de tama o menor a 200 nm y también se observó que la capa superficial afectada presentó un incremento de la resistencia a la tracción de al menos un 57 % respecto al acero base.
Correla??o entre perda auditiva e resultados dos questionários Hearing Handicap Inventory for the Adults: Screening Version HHIA-S e Hearing Handicap Inventory for the Elderly - Screening Version - HHIE-S
Menegotto, Isabela Hoffmeister;Soldera, Cristina Loureiro Chaves;Anderle, Paula;Anhaia, Tanise Cristaldo;
Arquivos Internacionais de Otorrinolaringologia , 2011, DOI: 10.1590/S1809-48722011000300009
Abstract: introduction: the self-assessment questionnaires are useful to measure the emotional and social/transient consequences resulting from hearing loss, and they can be used in a wide range of situations in the clinical routine, such as auditory screening. objective: check the sensitivity and specificities of hhia-s and hhie-s questionnaires to identify a hearing loss and their usages in auditory screenings, as well as analyze the ability of these questionnaires to detect different degrees of hearing impairments in the studied people. method: retrospective study with 51 individuals aged between 18 and 88, who filled out the hearing handicap inventory for adults screening version - hhia-s and hearing handicap inventory for the elderly screening version - hhie-s questionnaires at the waiting room of the brazilian unified health system (sus)'s otorhinolaryngology infirmary. results: the instruments showed a low sensitivity (47%), not identifying individuals with a hearing loss; however, they showed a high specificity (75%), accurately identifying individuals with no hearing disorder. moreover, no significant association between the degree of hearing loss and the constraint degree for participation was found. conclusion: the aforementioned questionnaires revealed a low sensitivity and a high specificity, proving to be ineffective for auditory screenings in a group with previous hearing complaints in addition to being unable to detect different types and degrees of hearing impairment.
Violência familiar na perspectiva do pensamento complexo
Backes,Dirce Stein; Viero,Matheus; Paim,Caroline; Correa,Esther; Bopp,Julia; Soldera,Nathalia;
Avances en Enfermería , 2011,
Abstract: taking into account the multiple dimensions involving the human being and social phenomena, this paper aims to shed light on the meaning of "domestic violence" in order to broaden and contextualize nursing care in the different areas of social inclusion. data were collected through a semi-structured interview with individuals in the municipality of santa maria - rs, brazil, between may and june 2009. the data, coded and analyzed under the theoretical framework of thematic analysis, resulted in four themes: questioning the role of the media, perception of the influence of the media, reconsideration of teaching-learning methods, and silent violence. the results show that analyzing the many variables involved the "violence" phenomenon requires a perception of the individual, either victim or aggressor, as a unique and multidimensional being, as well as of the articulation of the various professional areas.
Religi?o e uso de drogas por adolescentes
Dalgalarrondo, Paulo;Soldera, Meire Aparecida;Corrêa Filho, Heleno Rodrigues;Silva, Cleide Aparecida M;
Revista Brasileira de Psiquiatria , 2004, DOI: 10.1590/S1516-44462004000200004
Abstract: introduction: many international studies show that religion is an important dimension modulating the use of alcohol and drugs by adolescents. objectives: to determine which religious variables are associated to frequent or heavy use of alcohol, tobacco and drugs among adolescents in intermediate and high schools in campinas, brazil. methods: a cross-sectional study using a self-report anonymous questionnaire was administered to 2.287 students from a convenience sample of seven schools: five from central areas (two public and three private schools) and two public schools from the outskirts of the city, in 1998. the study analyzes data regarding the use of alcohol, tobacco, medicines, solvents, marijuana, cocaine and ecstasy. the religious variables included in the regression analysis were: religious affiliation, church attendance, self-assessed religiousness, and religious education in childhood. for the substances, nicotine, alcohol, marijuana, cocaine, ecstasy and "abuse of medicines" a logistic regression analysis for dicotomic answer was applied. results: the heavy use of at least one drug during the last month was more frequent among students that did not have a religious education during childhood. the use in the last month of cocaine, ecstasy and (abuse of) medicines was more frequent among those students that had no religion (cocaine and medicines) and that did not have a religious education during childhood (ecstasy and medicines). conclusions: this study is consistent with previous investigations demonstrating a strong influence of religious variables over the use of drugs among adolescents. interesting, it was found that no or weaker religious education during childhood was markedly associated with significant more use of drugs during adolescence.
Uso pesado de álcool por estudantes dos ensinos fundamental e médio de escolas centrais e periféricas de Campinas (SP): prevalência e fatores associados
Soldera, Meire;Dalgalarrondo, Paulo;Corrêa Filho, Heleno Rodrigues;Silva, Cleide Aparecida M;
Revista Brasileira de Psiquiatria , 2004, DOI: 10.1590/S1516-44462004000300007
Abstract: it is important to identify factors related to heavy alcohol use among adolescents, as this allows interventions aimed at reducing risk behavior and possible increasing harmful use of alcohol. objectives: to determine the prevalence of heavy alcohol use and investigate the influence of sociodemographic, cultural and psychopathological variables on alcohol use among elementary and high-school students of public and private schools in campinas, brazil. methods: this is a cross-sectional study using an intentional sampling technique. the questionnaire used was based on the cebrid (brazilian information center on psychotropic drugs) questionnaire and filled out anonymously by the subjects. the sample consisted of 2,287 elementary and high-school students from public and private schools in campinas, brazil, during the year of 1998. according world health organization criteria (who, 1981), alcohol use for 20 days or more in the 30 days prior to the study was considered heavy alcohol use. the "polytomic logistic regression - generalized logits model" was applied to identify the factors that influenced heavy alcohol use. results: heavy alcohol use was seen in 11.9% of the sample, being more frequent among students at the inner-city public school belonging to socioeconomic classes a and b, who held down jobs and attended school in the afternoons. these students felt that their families did not understand or support them and also showed lower academic performance at school. conclusions: the present study indicates that factors such as availability of funds, work , delayed schooling performance and unfavorable personal and family situations were related to heavy alcohol use among adolescents.
Uso de drogas psicotrópicas por estudantes: prevalência e fatores sociais associados
Soldera,Meire; Dalgalarrondo,Paulo; Corrêa Filho,Heleno Rodrigues; Silva,Cleide A M;
Revista de Saúde Pública , 2004, DOI: 10.1590/S0034-89102004000200018
Abstract: objective: to determine the prevalence of the heavy use of drugs among elementary and high school students in a sample of public and private schools, and to identify associated demographic, psychological, cultural and social factors. methods: this report describes a cross-sectional study using an intention-type sampling technique that compared public schools in central and peripheral areas and private schools. an anonymous self-administered questionnaire was applied. the sample consisted of 2,287 elementary and high school students in the city of campinas in 1998. heavy use of drugs was defined as the use of drugs on 20 or more days during the 30 days preceding the survey (who, 1981). for the statistical analysis, polytomic logistic regression analysis (logit model) was utilized to identify factors that influenced this manner of using drugs. results: heavy use of legal and illegal drugs was found as follows: alcohol (11.9%), tobacco (11.7%), marijuana (4.4%), solvents (1.8%), cocaine (1.4%), medications (1.1%) and ecstasy (0.7%). the heavy use of drugs was greatest among students at the city-center public school who had daytime jobs and studied in the evenings. these students were in the a and b socioeconomic classes and had had little religious education during childhood. conclusions: greater availability of cash and specific socialization patterns were identified as factors associated with the heavy use of drugs among students.
Correla o entre perda auditiva e resultados dos questionários Hearing Handicap Inventory for the Adults - Screening Version HHIA-S e Hearing Handicap Inventory for the Elderly - Screening Version - HHIE-S
Menegotto, Isabela Hoffmeister,Soldera, Cristina Loureiro Chaves,Anderle, Paula,Anhaia, Tanise Cristaldo
Arquivos Internacionais de Otorrinolaringologia , 2011,
Abstract: Introdu o: Os questionários de autoavalia o s o úteis para quantificar as consequências emocionais e sociais/situacionais percebidas em fun o da perda de audi o, podendo ser utilizados em diversas situa es na rotina clínica, como a triagem auditiva. Objetivo: Verificar a sensibilidade e a especificidade dos questionários HHIA-S e HHIE-S na detec o de perda auditiva e suas aplicabilidades em triagens auditivas e analisar a capacidade desses questionários em detectar diferentes graus de comprometimento auditivo na popula o estudada. Método: Estudo retrospectivo, 51 indivíduos, entre 18 e 88 anos, responderam aos questionários Hearing Handicap Inventory for Adults Screening Version - HHIA-S e Hearing Handicap Inventory for the Elderly Screening Version - HHIE-S em sala de espera de um ambulatório de otorrinolaringologia do SUS. Resultados: Os instrumentos revelaram baixa sensibilidade (47%), n o identificando indivíduos com perda auditiva; porém, apresentaram alta especificidade (75%), identificando, corretamente, indivíduos que n o apresentavam problemas de audi o. Ainda, n o existiu associa o significativa entre o grau da perda auditiva e o grau de restri o de participa o. Conclus o: Os referidos questionários apresentaram baixa sensibilidade e alta especificidade, n o sendo eficazes para triagens auditivas em um grupo com queixas auditivas prévias, e também n o foram capazes de detectar diferentes tipos e graus de comprometimento auditivo.
Sinais e sintomas relacionados à baixa acuidade visual em escolares do nordeste do Rio Grande do Sul Signs and symptoms related to low visual acuity in schoolchildren from the Northeast of Rio Grande do Sul
Jonathan Soldera,Ellen Zatti Ramos Simionato,Eduardo Machado Estev?o Pires,Filipe Rech Bassani
Revista Brasileira de Medicina de Família e Comunidade , 2010, DOI: 10.5712/rbmfc3(9)81
Abstract: O objetivo do estudo foi associar os principais sinais e sintomas oculares da infancia com a baixa acuidade visual em escolares do nordeste do Rio Grande do Sul. Durante o Projeto Saúde é Cidadania/A o Comunitária, do período de mar o a setembro de 2006, foi realizado com 338 escolares de quatro a 15 anos, os quais chegaram ao servi o de forma livre e espontanea o teste de acuidade visual com a tabela de Snellen e um questionário indagando: a presen a de dificuldade para ver o quadro; cefaléia; dor; vermelhid o ou prurido ocular. Foi considerado parametro para a baixa acuidade visual aquela menor ou igual a 20/20 em ambos os olhos. A estatística foi realizada pelo teste do qui-quadrado e o cálculo da sensibilidade (s), especificidade (e), valor preditivo positivo (vpp) e likelihood ratio + (lr+). Foi estatisticamente significativa a rela o entre a baixa acuidade visual com a dificuldade para enxergar o quadro na escola (p<0,001, s=26%, e=93%, vpp=51%, lr+=3,7) e com a dor ocular (p=0,002, s=23%, e= 90%, vpp=38%, lr+=2,3). N o foi estatisticamente significativa a rela o entre a baixa acuidade visual e a cefaléia (p=0,3, s=26%, e=79%, vpp=24%, lr+=1,2), prurido ocular (p=0,06, s=26%, e=83%, vpp=28%, lr+=1,5) e vermelhid o ocular (p=0,8, s=11%, e=88%, vpp=21%, lr+=0,9). A rela o da presen a de pelo menos uma dessas queixas com a baixa acuidade visual foi significativa (p=0,004, s=58%, e=60%, vpp=27%, lr+=1,4). Crian as em idade escolar com dificuldade em enxergar o quadro ou dor ocular têm uma probabilidade maior de possuírem baixa acuidade visual, enquanto crian as com cefaléia, vermelhid o ou prurido ocular n o fazem parte dessa associa o. Purpose: Associate the most important eye symptoms and signs of the childhood to low visual acuity in children from the northeast of Rio Grande do Sul. Methods: During the Project Health and the Citizen/Community Action , carried out from March to September 2006, a visual acuity test was performed in 338 schoolchildren between 4 and 15 years of age, who looked for the service spontaneously. The screening was performed using the Snellen chart and a questionnaire asking about difficulty to see the blackboard at school, headache, eye redness, pain or itch. Acuity less or equal to 20/20 in both eyes was used as parameter for low visual acuity. Statistical analysis was performed using the chi-square test and sensitivity (se), specificity (sp), positive predictive value (ppv) and likelihood ratio + (lr+). Results: There was a statistically significant relationship between low visual acuity and difficulty to see the blac
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