DENISE SAHYUN LEVY

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Agora exibindo 1 - 9 de 9
  • Artigo IPEN-doc 29699
    O Museu Ciências Nucleares como um espaço interativo para desmistificação das ciências nucleares
    2022 - OLIVEIRA, BRUNA; AQUINO, KATIA A. da S.; LEVY, DENISE S.; KHOURY, HELEN J.
    O presente artigo discute o potencial educacional do Museu de Ciências Nucleares (MCN) localizado na Universidade Federal de Pernambuco, primeiro museu de Ciências Nucleares da América Latina e o único no Brasil inteiramente dedicado ao tema da radioatividade e suas aplicações benéficas. Também apresenta apontamentos sobre o museu enquanto espaço facilitador para a produção de novos saberes e desenvolvimento de competências e habilidades para a educação básica. Nesta direção, o MCN proporciona uma aprendizagem interativa e significativa da Ciência Nuclear, articulando a informação científica à realidade social, possuindo um grande papel no processo de reconstrução do conhecimento, desmistificando mitos e medos infundados, promovendo um senso crítico e reflexivo acerca da radioatividade. Além disso, a visita ao MCN proporciona o questionamento reconstrutivo sobre riscos e benefícios da radioatividade que oportuniza aos envolvidos a tomarem decisões éticas e cidadãs a respeito do tema com uma visão mais ampliada e cientificamente embasada.
  • Artigo IPEN-doc 27594
    Irradiação de alimentos no Brasil
    2020 - LEVY, D.; SORDI, G.M.A.A.; VILLAVICENCIO, A.L.C.H.
    O presente artigo apresenta um panorama histórico da evolução do processo de irradiação de alimentos no Brasil, analisando questões regulatórias nacionais, técnicas utilizadas e aportes nos cenários social, sanitário e econômico. Esta revisão tem por objetivo fornecer à comunidade científica uma perspectiva abrangente sobre a atual situação da irradiação de alimentos no Brasil, proporcionando novas reflexões sobre eventos passados, limitações atuais e possibilidades futuras. São analisados e discutidos atuais fatores que limitam uma mais ampla utilização da irradiação de alimentos no país, dentre os quais, a carência de irradiadores que possam atender às distintas regiões do país. Finalmente, o artigo apresenta a equivocada percepção de risco por parte da população e a necessidade de ações para impulsionar a aceitação pública, dentre as quais, o desenvolvimento de programas de comunicação e informação junto ao público leigo que desconhece as contribuições das aplicações pacíficas da tecnologia nuclear.
  • Artigo IPEN-doc 26434
    Educating the educators
    2019 - LEVY, DENISE; VILLAVICENCIO, ANNA L.C.H.
    In a rapid-changing world, science teachers face considerable challenges. In addition to the basic curriculum, there must be included several transversal themes, which demand creative and innovative strategies to be arranged and integrated to traditional disciplines. In Brazil, nuclear science is still a controversial theme, and teachers themselves seem to be unaware of the issue, most often perpetuating prejudice, errors and misconceptions. This article presents the authors’ experience in the development of an interdisciplinary pedagogical proposal to include nuclear science in the basic curriculum, in a transversal and integrating way. The methodology applied was based on the analysis of several normative documents that define the requirements of essential learning, competences and skills of basic education for all schools in Brazil. The didactic materials and resources were developed according to the best practices to improve learning processes privileging constructivist educational techniques, with emphasis on active learning process, collaborative learning and learning through research. The material consists of an illustrated book for students, a book for teachers and a manual with activities that can articulate nuclear science to different disciplines: Portuguese, mathematics, science, art, English, history and geography. The content counts on high scientific rigor and articulate nuclear technology with topics of interest to society in the most diverse spheres, such as food supply, public health, food safety and foreign trade. Moreover, this pedagogical proposal takes advantage of the potential value of digital technologies, implementing QR codes that excite and challenge students of all ages, improving interaction and engagement. The expected results include the education of the educators for nuclear science communication in a transversal and integrating way, demystifying nuclear technology in a contextualized and significant approach. It is expected that the interdisciplinary pedagogical proposal contributes to improving attitudes towards knowledge construction, privileging reconstructive questioning, fostering a culture of systematic curiosity and encouraging critical thinking skills.
  • Artigo IPEN-doc 24686
    Web-based system for radiological protection programs
    2015 - LEVY, D.S.; SORDI, G.M.A.A.
    In order to establish a Radiation Protection Plan or a Radiation Emergency Plan, Brazilian facilities should take into account all procedures based on national and international guidelines and recommendations. This information can be found in several documents published by different organizations over the past decades: the International Commission on Radiological Protection (ICRP), International Atomic Energy Agency (IAEA) and Comissão Nacional de Energia Nuclear (CNEN). Therefore, this project aims the informatization of the radiological protection programs in a single system in order to offer unified programs and inter-related information in Portuguese, providing Brazilian facilities a complete repository for research, consultation and information, combining computer technology and radiological protection in order to enhance the best benefits from information technology. This research work includes programs about: (1) Monitoring of Workplace (Monitoring for External Radiation, Monitoring for Surface Contamination, Monitoring for Air Contamination) and (2) Individual Monitoring (Monitoring of External Exposure and Monitoring of Internal Exposure, Monitoring for Skin and Clothing). WEB platform tools and functionalities were developed according to target public needs, regarding new possibilities of media, mobile access, and information sharing. The servers processing power added to the technology of relational databases allow to integrate information from different sources, enabling complex queries with reduced response time. Moreover, taking into account this is a pioneer project with the prospect of long-term use, the challenge involves the combination of multiple computer technologies that allows a robust, effective and flexible system, which can be easily adapted to future technological innovations.
  • Artigo IPEN-doc 24749
    Construindo pontes entre ciência e sociedade
    2018 - LEVY, D.S.; SORDI, G.M.A.A.; VILLAVICENCIO, A.L.C.H.
    A irradiação de alimentos é uma técnica de preservação segura e eficaz para eliminar insetos e reduzir microrganismos prejudiciais à saúde humana. O processo contribui para inibir o brotamento e retardar o amadurecimento dos alimentos, prolongando a vida útil de frutas e legumes frescos. Entretanto, dentre uma grande parcela da população brasileira, ainda há grande desinformação sobre as aplicações pacíficas das ciências nucleares. Não raramente a mídia e as redes sociais tendem a associar a radiação ionizante a armas nucleares e acidentes de grandes proporções. A desinformação compromete a percepção do público: consumidores acabam por associar alimentos irradiados a alimentos radioativos ou contaminados. O público demonstra grandes preocupações quanto aos efeitos negativos das radiações para a saúde e riscos de contaminação ambiental. Os julgamentos e tomadas de decisões por parte da sociedade estão diretamente ligados à sua percepção dos riscos e benefícios advindos da Tecnologa Nuclear. Este artigo apresenta algumas considerações sobre as percepções do público a respeito dos alimentos irradiados, bem como algumas ações de divulgação científica, para aproximar ciência e sociedade. Cabe à comunidade científica construir novas pontes entre as ciências nucleares e o público leigo, oferecendo uma perspectiva mais ampla sobre as aplicações pacíficas das radiações ionizantes e suas contribuições na vida cotidiana.
  • Artigo IPEN-doc 24718
    Qualitative and quantitative approaches of occupational risks agents in a Brazilian facility
    2018 - CARNEIRO, J.C.G.G.; ALVES, A.S.; RODRIGUES, D.L.; LEVY, D.S.; SORDI, G.M.A.A.
    The occupational risk assessment is a structured and systematic process, which depends on the correct identification of probable risk factors and agents potentially founded at workplace. The objective of this paper was to carry out the basic characterization of a Brazilian radioisotope production facility through ample knowledge of the workplace, workforce, task performed and identification and evaluation of occupational risk agents in the workplace. The data analysis comprised a qualitative or quantitative approaches based on subjective information obtained by questionnaire, interview and observations about workplace, workforce and risk agents. The workforce was distributed into eight work processes. Regarding task-related exposure there was assumed that all workers presented the same exposure profile. Therefore, it was made an evaluation of the association degree between the occupational risks agents, which there were identified 17 risk agents at the workplace, including physical, chemical, biological, ergonomic and accident risks. Although the workers may be potentially exposed to different risk agents, the ionizing radiation was the main physical risk factor observed in this facility.
  • Artigo IPEN-doc 24313
    Education and citizenship
    2017 - LEVY, DENISE; PERALTA, TELMA M.; POZZI, LORENY; TOVAR, IZI P. de; SANTOS, IGOR P. dos; VILLAVICENCIO, ANNA L.C.H.
    In the so-called Information Society, knowledge is a powerful tool for real social inclusion. Inclusion through knowledge is a citizen attitude, as it changes students’ perceptions, allowing critical thinking, stimulating the ability to question the world and encouraging to change reality as active citizens. Popularization of science is a must and a challenge. In a globalized world where the Internet seems to be the largest vehicle for information, offering children and young people the illusion of unlimited knowledge, the traditional academic practices do not seem to correspond to the student's desire of learning. Under the light of psycho-pedagogical perspective, we can discuss different possibilities to communicate science in the academic context, at different ages, from pre-school to university. This article brings together the experience of six educational professionals who use the psycho-pedagogical know-how to promote a meaningful and interesting learning. Psycho-pedagogical practices consider the singularity of each group, students protagonists in learning process, stimulating reconstructive questions, re-signifying previous knowledge, making knowledge meaningful and relevant, thus articulating student´s desire to the scientific discourse.
  • Artigo IPEN-doc 23779
    Web-based instructional program to improve professional development: recommendations and standards for radioactive facilities in Brazil
    2017 - LEVY, DENISE; SORDI, GIAN M.A.A.
    This web based project focuses on continuing corporate education and improving workers' skills in Brazilian radioactive facilities throughout the country. The potential of Information and Communication Technologies (ICTs) shall contribute to improve the global communication in this very large country, where it is a strong challenge to ensure high quality professional information to as many people as possible. The main objective of this system is to provide Brazilian radioactive facilities a complete web-based repository - in Portuguese - for research, consultation and information, offering conditions for learning and improving professional and personal skills. UNIPRORAD is a web based system to offer unified programs and inter-related information about radiological protection programs. The content includes the best practices for radioactive facilities in order to meet both national standards and international recommendations published by different organizations over the past decades: International Commission on Radiological Protection (ICRP), International Atomic Energy Agency (IAEA) and National Nuclear Energy Commission (CNEN). The website counts on concepts, definitions and theory about optimization and ionizing radiation monitoring procedures. Moreover, the content presents further discussions related to some national and international recommendations, such as potential exposure, which is currently one of the most important research fields in radiological protection. Only two publications of ICRP develop expressively the issue and there is still a lack of knowledge of fail probabilities, for there are still uncertainties to find effective paths to quantify probabilistically the occurrence of potential exposures and the probabilities to reach a certain level of dose. To respond to this challenge, this project discusses and introduces potential exposures in a more quantitative way than national and international recommendations. Articulating ICRP and AIEA valid recommendations and official reports, in addition to scientific papers published in major international congresses, the website discusses and suggests a number of effective actions towards safety which can be incorporated into labor practice. The WEB platform was created according to corporate public needs, taking into account the development of a robust but flexible system, which can be easily adapted to future demands. ICTs provide a vast array of new communication capabilities and allow to spread information to as many people as possible at low costs and high quality communication. This initiative shall provide opportunities for employees to increase professional skills, stimulating development in this large country where it is an enormous challenge to ensure effective and updated information to geographically distant facilities, minimizing costs and optimizing results.
  • Artigo IPEN-doc 23753
    Web-based tools to increase public understanding of nuclear technology and food irradiation
    2017 - LEVY, DENISE; VILLAVICENCIO, ANNA L.C.H.
    Food irradiation is a processing and preservation technique to eliminate insects and parasites and reduce diseasecausing microorganisms. Moreover, the process helps to inhibit sprouting and delay ripening, extending fresh fruits and vegetables shelf-life. Nevertheless, most Brazilian consumers seem to misunderstand the difference between irradiated food and radioactive food and the general public has major concerns about the negative health effects and environmental contamination. Society´s judgment and decision making are directly linked to perceived benefits and risks. The web-based project entitled ‘Scientific information about food irradiation: Internet as a tool to approach science and society’ was created by the Nuclear and Energetic Research Institute (IPEN), in order to offer an interdisciplinary approach to science education, integrating economic, ethical, social and political aspects of food irradiation. This project takes into account that, misinformation and unfounded preconceived ideas impact heavily on the acceptance of irradiated food and purchase intention by the Brazilian consumer. Taking advantage of the potential value of the Internet to enhance communication and education among general public, a research study was carried out regarding the possibilities and trends of Information and Communication Technologies among the Brazilian population. The content includes concepts, definitions and Frequently Asked Questions (FAQ) about processes, safety, advantages, limitations and the possibilities of food irradiation, including health issues, as well as its impacts on the environment. The project counts on eight selfinstructional interactive web courses, situating scientific content in relevant social contexts in order to encourage self-learning and further reflections. Communication is a must to improve public understanding of science. The use of information technology for quality scientific divulgation shall contribute greatly to provide information throughout the country, spreading information to as many people as possible, minimizing geographic distances and stimulating communication and development.