A5018972790- Polar Research and Ecology
- Geology and Paleoclimatology Research
- Radioactivity and Radon Measurements
- Atmospheric chemistry and aerosols
- Nuclear and radioactivity studies
- Radioactive contamination and transfer
- Microbial Community Ecology and Physiology
- Cryospheric studies and observations
- Atmospheric aerosols and clouds
- Lichen and fungal ecology
- Protist diversity and phylogeny
- Science and Education Research
- Education and Digital Technologies
- Ocean Acidification Effects and Responses
- Graphite, nuclear technology, radiation studies
- Business and Management Studies
- Solar and Space Plasma Dynamics
- Education Pedagogy and Practices
- Science and Science Education
- Infant Nutrition and Health
- Algal biology and biofuel production
- Phytochemistry Medicinal Plant Applications
- Planetary Science and Exploration
- Bioactive Compounds and Antitumor Agents
- Climate change and permafrost
Universidade do Estado do Rio de Janeiro
2004-2024
Universidade Veiga de Almeida
2017-2024
A icterícia neonatal é uma condição comum que afeta grande proporção de recém-nascidos, caracterizada pela coloração amarelada da pele, mucosas e esclerótica devido ao acúmulo excessivo bilirrubina no sangue. Essa pode ser classificada como fisiológica ou patológica, sendo a primeira forma mais comum, geralmente autolimitada, enquanto segunda exige intervenção clínica risco complicações graves, o kernicterus. epidemiologia revela alta prevalência global, com cerca 60% dos recém-nascidos...
When mosses are exposed to increased quantities of ultraviolet (UV) radiation, they produce more secondary metabolites. Antarctica moss Sanionia uncinata (Hedw.) Loeske has presented high carotenoid contents in response an increase UVB radiation. This been recommended as a potential source antioxidants. In the present work, protective and enhancing effects aqueous (AE) hydroalcoholic (HE) extracts S. on cleavage supercoiled DNA were evaluated through topological modifications, quantified by...
It is estimated that the explosive Hudson volcano eruption in Southern Chile injected approximately 2.7 km3 of basalt and trachyandesite tephra into troposphere between August 8-15, 1991. The signal has been detected Antarctica at eastern sector South Pole snow. In this work, we track volcanic plume using a dispersion model, remote sensing, re-analysis high-resolution ice core analysis from Detroit Plateau Antarctic Peninsula sedimentary records shallow lakes King George Island (KGI)....
O objetivo principal do presente trabalho foi avaliar a aplicação de Estudos Dirigidos como ferramenta metodológica ativa capaz promover melhorias ensino/aprendizagem ao longo ciclos estudo desenvolvidos no contexto Ensino Superior. Durante os períodos acadêmicos estudados (2019/1, 2019/2 e 2023/1) foram avaliados, forma qualitativa quantitativa, 534 por estudantes integrantes três disciplinas (Física Biofísica, Educação Trabalho na Contemporaneidade - Competências Habilidades Geo-História...
The Antarctic Peninsula is undergoing rapid climate changes, impacting its surrounding marine ecosystem. At that site, sea ice plays a crucial role in this ecosystem by serving as habitat for organisms and influencing primary productivity. Studying variability productivity essential understanding environmental changes Antarctica. This research focused on Joinville Island, located at the tip of Peninsula, where meteorological data glaciochemical analysis were conducted snow/firn cores Cl-,...
Refractory black carbon (rBC) has great potential to increase melting when deposited on snow and ice surfaces. Previous studies attributed sources impacts of rBC in the northern Antarctic Peninsula region by investigating long-range atmospheric transport from South Hemisphere biomass burning industrial regions or assessing local tourism research activities. We used high-resolution measurements refractory a firn core collected near tip Peninsula, as well Modern-Era Retrospective Analysis for...
Abstract Nowadays it is well accepted that background aerosols in the boundary layer over remote oceans are of marine origin and not aged continental. Particularly Atlantic sector Southern Ocean at least four main important regions exhibit significant ocean primary productivity. They Bellingshausen–Amundsen Sea, Weddell southern Argentinean shelf Chilean coast. In this work, we have combined ground-based continuous atmospheric sampling aerosol number concentration (ANC), over-sea dimethyl...
Despite the extent use of geochemical tracers to track warm air mass origin reaching Antarctic continent, we present here evidences that microorganisms being transported by atmosphere and deposited in fresh snow layers ice sheets do act as advection from Southern Patagonia region Northern Peninsula. We combined atmospheric circulation data with microorganism content snow/firn samples collected two sites Peninsula (King George Island/Wanda glacier Detroit Plateau) using flow cytometer...
Popularly known as “cutieira”, Joannesia princeps Vell. 1798, is a tree species of the familyEuphorbiaceae. This work analyzed biometrics fruits and seeds their dispersionprocesses at locality in Zona da Mata, state Minas Gerais, Brazil. The datacame from twenty-four whole fresh fruit collected an adult tree, 250 endocarpsfound on ground, Sítio do Tanque located rural region municipality ofSão Francisco Glória, Gerais. Biometry revealed mean values 102.2 ± 8.4 mmfor length; 96.2 6.9 mm for...
The Association of Polar Early Career Scientists (APECS) is an international and interdisciplinary organization for undergraduate graduate students, postdoctoral researchers, early faculty members, educators, others with interests in Regions (Antarctic Arctic environments) the wider cryosphere. APECS aims to motivate young polar scientists study several aspects related environments, promote networks, develop research, education outreach activities (for further information visit...
The procedures for a set of techniques to recover grains pollen 26 and spores from liquid samples are described. Liquefied matrices, such as melting lakes, snow ice, can provide record climatic environmental events at different geographic temporal scales. need standardization was demonstrated in research carried out with matrices water thawing lakes collected on King George Joinville islands (Antarctica). use the methods described permit increased rescue palynomorphs thereby adding greater...
A tendência proposta para a educação brasileira apoia o uso de diferentes instrumentos didáticos ensino, sendo que, exposições mediadas, além serem uma forma divulgação científica, podem servir alunos assimilarem conhecimentos multidisciplinar. Para testar esta hipótese e visando ampliar atividades científicas realizadas no Continente Antártico, foi instalada na UVA, exposição mediada “O Brasil Antártica”. recebeu 202 do Ensino Médio, que responderam um questionário sobre Antártica, dividido...
O projeto Café Com Ciência BIO UVA foi criado com o objetivo de estabelecer um espaço permanente discussão científica através da realização ciclo seminários, que pudesse contribuir para uma melhor formação acadêmica dos alunos do Curso Biologia na Universidade Veiga Almeida. Nesse contexto, dados referido projeto, bem como seu perfil em rede social são apresentados após seus dois primeiros anos realização. Entre 2017 e 2018 foram realizadas 44 palestras científicas, receberam 1.541...
By using a radiation detector, the gamma dose rates of 10 beaches from Ilha Grande were measured. The results (in nGyh-1) 69±14 for Abraãozinho, 65±9 Biquinha, 79±14 Caxadaço, 68±12 Crena, 62±7 Dois Rios, Guaxuma, 67±9 Julia, 64±19nGyh-1 Parnaioca, 126±24 Preta and 67±9nGyh-1 Sobradinho. annual effective doses Beach was 0.15±0.03mSv y-1 in Caxadaço 0.10±0.02 mSv y-1, while others mean value rate 0.08 did not present significant statistic difference. activities concentration (Bqkg-1)...
The activities concentration (Bqkg-1) of 232Th, 238U and 40K in sand samples profiles (0-10, 10-20 20-30cm) Preta Beach Ilha Grande, Rio de Janeiro - Brazil was measured from gamma ray spectrometry, during a period twelve months. the three different ranged 92-438 for 46-277 44-379 40K. dose rate situ, at 1m above ground level 125±11nGy h-1, corresponding to an annual effective 0.15±0.01 mSv y-1, it ranging 0.07 0.28 y-1. primordial radionuclide 232Th main contributor Beach, studied. results...
ABSTRACT Despite the extent use of geochemical tracers to track warm air mass origin reaching Antarctic continent, we present here evidences that microorganisms being transported by atmosphere and deposited in fresh snow layers ice sheets do act as advection from Southern Patagonia region Northern Peninsula. We combined atmospheric circulation data with microorganism content snow/firn samples collected two sites Peninsula (King George Island/Wanda glacier Detroit Plateau) using flow...