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Search Results: 1 - 10 of 599592 matches for " Delcy de A.; "
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Release of Uranium by an Ore Treatment Unit at Caldas, MG, Brazil  [PDF]
Wagner de S. Pereira, Alphonse Kelecom, Juliana R. de S. Pereira, Delcy de A. Py Júnior
Journal of Environmental Protection (JEP) , 2013, DOI: 10.4236/jep.2013.46066
Abstract:

This study aims to assess the behavior of the release of Unat (i.e. uranium isotopes in natural relative abundance) from the release of water treated by the Ore Treatment Unit (UTM) in Caldas, state of Minas Gerais, Brazil, during the years 1999 to 2009. During this period, the unit showed no industrial activity, except between 2004 and 2005, when UTM operated 400 tons of monazite in a process to obtain rare earths. Unat was analyzed by spectrophotometry once per week in the effluent waters at sampling point 014. Two fractions were considered for analysis: the soluble one (that passes through a 0.45 μm filter) and the particulate one (retained on a 0.45 μm filter). Statistical analyses were performed: the “Z” test and Pearson’s r2 correlation index. The values for the soluble fraction were consistently lower than those of the particulate fraction and no statistically significant correlation was observed between the soluble and particulate fractions. However, the particulate and the total fractions (the sum of soluble and particulate) strongly correlated.

Activity of natural radionuclides and their contribution to the absorbed dose in the fish cubera snapper (lutjanus cyanopterus, cuvier, 1828) on the coast of Ceara, Brazil
Pereira, Wagner de S.;Kelecom, Alphonse;Py Júnior, Delcy de A.;
Brazilian Journal of Oceanography , 2010, DOI: 10.1590/S1679-87592010000800005
Abstract: a methodology was developed for converting the activity concentration of radionuclides (bq kg-1) into absorbed dose rate (gy y-1), aiming an approach to environmental radioprotection based on the concept of standard dose limit. the model considers only the internal absorbed dose rate. this methodology was applied to the cubera snapper fish (lutjanus cyanopterus, cuvier, 1828) caught off the coast of ceará. the natural radionuclides considered were uranium-238, radium-226, lead-210, thorium-232 and radium-228. the absorbed dose rates were calculated for individual radionuclides and the type of emitted radiation. the average dose rate due to these radionuclides was 5.36 μgy y-1, a value six orders of magnitude smaller than the threshold value of absorbed dose rate used in this study (3.65 103 mgy y-1), and similar to that found in the literature for benthic fish. ra-226 and u-238 contributed 67% and 22% of the absorbed dose rate, followed by th-232 with 10%. ra-228 and pb-210, in turn, accounted for less than 1% of the absorbed dose rate. this distribution is somewhat different from that reported in the literature, where the ra-226 accounts for 86% of the absorbed dose rate.
Eficacia de un programa cognitivo conductual para la disminución de los niveles de presión arterial
Marcela Arrivillaga Quintero,María Teresa Varela Arévalo,Delcy Elena Cáceres de Rodríguez,Diego Correa Sánchez
Pensamiento Psicológico , 2007,
Abstract: Este artículo presenta la eficacia de un programa de intervención cognitivo conductual para la disminución de los niveles de presión arterial, a partir de un estudio cuasiexperimental con dos grupos intactos -experimental y control-, medidas pre y post intervención y análisis intra e intergrupo. La muestra estuvo conformada por 94 pacientes que asisten a control médico por hipertensión arterial en una institución de salud de la ciudad de Cali, Colombia. Se utilizaron como medidas los niveles de presión arterial sistólica y presión arterial diastólica, la Escala de estrés percibido y el Cuestionario de adherencia al tratamiento para casos de hipertensión arterial. La intervención logró disminuir significativamente los niveles de presión arterial sistólica, mantuvo controlados los niveles de presión arterial diastólica, disminuyó el nivel de estrés percibido e incrementó significativamente la adherencia al tratamiento. Los resultados del estudio respaldan la eficacia de las intervenciones cognitivo conductuales para el manejo de la hipertensión arterial.
CONSTRUCCIóN Y VALIDACIóN DE UN CUESTIONARIO DE FACTORES DE RIESGO Y DE PROTECCIóN PARA EL CONSUMO DE DROGAS EN JóVENES UNIVERSITARIOS
SALAZAR TORRES,ISABEL CRISTINA; VARELA ARéVALO,MARíA TERESA; TOVAR CUEVAS,JOSé RAFAEL; CáCERES DE RODRíGUEZ,DELCY ELENA;
Acta Colombiana de Psicología , 2006,
Abstract: this paper presents the construction and validation of the risk and protective factors for drug use questionnaire in college youth. content validity, construct validity and reliability were established. the sample consisted of 763 students between 15 and 25 years old, from a private university in cali, colombia. the questionnaire reliability was 0,906, and six psychosocial risk and protective factors were defined (emotional disturbance, satisfaction with interpersonal relations, beliefs and appraisal about drugs, spirituality, social permissiveness and access to drugs, social skills and self-control). the current questionnaire is a useful tool to assess drug use and the psychosocial factors associated to it in college youth. however, it will be administered in later studies in order to establish its predictive validity.
EFECTOS BENéFICOS DE LA MODIFICACIóN DEL ESTILO DE VIDA EN LA PRESIóN ARTERIAL Y LA CALIDAD DE VIDA EN PACIENTES CON HIPERTENSIóN
VARELA ARéVALO,MARíA TERESA; ARRIVILLAGA QUINTERO,MARCELA; CáCERES DE R,DELCY ELENA; CORREA SáNCHEZ,DIEGO; HOLGUíN PALACIOS,LYDA EUGENIA;
Acta Colombiana de Psicología , 2005,
Abstract: this paper presents the results of a study which purpose was to determine the impact of a lifestyle modification program to reduce blood pressure levels and to improve the quality of life in hypertension patients. the method was a quasi-experimental, with transversal design, intragroup analysis and repeated measures (pre-post intervention). the sample was composed of 44 hypertension patients attended at a health care service from cali, colombia. systolic (sbp) and diastolic (dbp) blood pressure levels were registered, and quality of life was assessed through the sf-36 health survey v2. a reduction of sbp was found with statistical significance, while dbp remained the same in controlled levels. with regard to quality of life, the lifestyle modification program had beneficial effects on the mental summary and the role emotional scale. in the physical summary, the physical function and role physical improved significantly. the quality of life results showed some differences between patients with controlled and uncontrolled sbp and dbp levels.
CONSTRUCTION AND VALIDATION OF A QUESTIONNAIRE OF RISK AND PROTECTIVE FACTORS FOR DRUG USE IN COLLEGE YOUTH
Salazar Torres, Isabel Cristina,Varela Arévalo, María Teresa,Tovar Cuevas, José Rafael,Cáceres de Rodríguez, Delcy Elena
Acta Colombiana de Psicología , 2006,
Abstract: This paper presents the construction and validation of the Risk and protective factors for drug use questionnaire in college youth. Content validity, construct validity and reliability were established. The sample consisted of 763 students between 15 and 25 years old, from a private university in Cali, Colombia. The questionnaire reliability was 0,906, and six psychosocial risk and protective factors were defined (emotional disturbance, satisfaction with interpersonal relations, beliefs and appraisal about drugs, spirituality, social permissiveness and access to drugs, social skills and self-control). The current questionnaire is a useful tool to assess drug use and the psychosocial factors associated to it in college youth. However, it will be administered in later studies in order to establish its predictive validity
Consumo de sustancias psicoactivas ilegales en jóvenes: factores psicosociales asociados
María Teresa Varela Arévalo,Isabel Cristina Salazar Torres,Delcy Elena Cáceres de Rodríguez,José Rafael Tovar Cuevas
Pensamiento Psicológico , 2007,
Abstract: El objetivo de este trabajo fue describir el consumo de sustancias psicoactivas [SPA] ilegales en jóvenes y los factores psicosociales de riesgo y de protección asociados. Participaron 763 estudiantes (46,5% hombres y 52,4% mujeres) de una universidad privada de Cali, quienes diligenciaron el cuestionario de factores de riesgo y protección para el consumo de drogas. Los resultados muestran que la marihuana fue la droga de mayor consumo; y que existe una fuerte asociación entre el consumo de las cuatro SPA ilegales (marihuana, opiáceos, cocaína y éxtasis) y los factores psicosociales de riesgo y/o protección, principalmente, las habilidades de autocontrol, los preconceptos y valoración de las SPA, la relación con personas consumidoras y los comportamientos perturbadores.
O Portfólio Como Instrumento de Avalia o da Aprendizagem em Escola Montessoriana
Delcy Lacerda de Oliveira,Ligia Gomes Elliot
Meta : Avalia??o , 2012,
Abstract: O presente estudo teve por objetivo registrar o processo de constru o, em tempo real, do portfólio como instrumento de avalia o da aprendizagem de alunos de 6 a 9 anos do Ensino Fundamental I, do Colégio ágora, Escola Montessoriana. O que caracteriza o portfólio como modalidade de avalia o n o é o seu formato físico, mas a concep o de ensino que ele veicula. O estudo foi desenvolvido durante o ano letivo de 2009 em diferentes etapas: prepara o, desenvolvimento e avalia o. Cada uma delas contribuiu, em importancia, para a parceria entre os elementos do processo educacional: o educando, educador e a família, visando transformar o método de avalia o no Ensino Fundamental I, favorecendo o trabalho coletivo e uma ‘nova’ meta de ensino-aprendizagem. Chegado ao final do 3o trimestre, percebeu-se o quanto os alunos compreendiam claramente o caminho percorrido, suas dificuldades e conquistas. O portfólio tratado como abordagem pedagógica didática realizada com fidelidade às etapas de desenvolvimento de cada crian a dentro dos agrupamentos constituiu um caminho facilitador de aprendizagens significativas, de descobertas e constru o de identidade pessoal, no sentido do desenvolvimento integral dos alunos. Recomenda-se que seja elaborada uma ficha para validar, de forma sistemática, as próximas constru es do portfólio, como também o registro e a documenta o do desenvolvimento e dos níveis de aprendizagem de cada aluno, a cada trimestre letivo.
CONSUMO DE DROGAS EN JóVENES UNIVERSITARIOS Y SU RELACIóN DE RIESGO Y PROTECCIóN CON LOS FACTORES PSICOSOCIALES
CáCERES,DELCY; SALAZAR,ISABEL; VARELA,MARíA; TOVAR,JOSé;
Universitas Psychologica , 2006,
Abstract: the paper presents a non-experimental and descriptive research, aimed to identify the use of legal and illegal psychoactive drugs and the psychosocial associated risk and protective factors in a sample of 763 college students from cali, colombia. a questionnaire to evaluate the use of 4 illegal drugs, 2 legal drugs and 13 psychosocial factors was designed and validated. it was found that the legal drug with a higher level of consume was alcohol and the illegal drug was marijuana. the results show a significant association of psychosocial risk and protective factors with the use of both legal drugs (alcohol c2 = 16,54, p = 0,000; tobacco c2 = 39,07, p = 0,000) and the use of all the illegal drugs (marijuana c2 = 28,41, p = 0,000; ecstasy c2 = 17,04, p = 0,000; opiates c2 = 6,77, p = 0,034; and cocaine c2 = 8,89, p = 0,012). the associated factors for all drugs are specifically: disruptive behaviors, self-control, beliefs and valuation of pas and the relation with consumers.
DRUG USE IN COLLEGE STUDENTS AND ITS RELATION TO PSYCHOSOCIAL FACTORS OF RISK AND PROTECTION
DELCY CáCERES,MARíA VARELA,JOSé TOVAR,ISABEL SALAZAR
Universitas Psychologica , 2006,
Abstract: The paper presents a non-experimental and descriptive research, aimed to identify the use of legal and illegal psychoactivedrugs and the psychosocial associated risk and protective factors in a sample of 763 college students from Cali,Colombia. A questionnaire to evaluate the use of 4 illegal drugs, 2 legal drugs and 13 psychosocial factors was designedand validated. It was found that the legal drug with a higher level of consume was alcohol and the illegal drug wasmarijuana. The results show a significant association of psychosocial risk and protective factors with the use of bothlegal drugs (alcohol c2 = 16,54, p = 0,000; tobacco c2 = 39,07, p = 0,000) and the use of all the illegal drugs (marijuanac2 = 28,41, p = 0,000; ecstasy c2 = 17,04, p = 0,000; opiates c2 = 6,77, p = 0,034; and cocaine c2 = 8,89, p = 0,012). Theassociated factors for all drugs are specifically: disruptive behaviors, self-control, beliefs and valuation of PAS and therelation with consumers.
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