Browsing Exact and Earth Sciences by Title
Now showing items 544-563 of 5973
-
Bpm 24754 : a new southern zz ceti star
(1998) [Journal article]We report the discovery of a new long{period ZZ Ceti star through the analysis of photometric time series gathered on 7 nights between 1995 and 1996. The light curve displays a periodic variation with a period of ~ 18 min ... -
Brazilian instrument for assessing of eating disorders in children and adolescents
(2023) [Journal article]Objective: This study aimed to develop the Brazilian instrument for assessing eating disorders in children and adolescents and test its psychometric quality using item response theory (IRT). Design: Cross-sectional study. ... -
Brazilian physicists community diversity, equity, and inclusion : a first diagnostic
(2020) [Journal article]We report the results of a survey applied to students and professionals in the area of physics in Brazil, pursuing to draw a portrait of the composition of this community in terms of the social markers of difference age, ... -
Brazilian science between national and foreign journals : methodology for analyzing the production and impact in emerging scientific communities
(2016) [Journal article]In recent decades, we have observed an intensification of science, technology and innovation activities in Brazil. The increase in production of scientific papers indexed in international databases, however, has not been ... -
BRCA1 and BRCA2 mutational profile and prevalence in hereditary breast and ovarian cancer (HBOC) probands from Southern Brazil : are international testing criteria appropriate for this specific population?
(2017) [Journal article]Background Germline pathogenic variants in BRCA1 and BRCA2 (BRCA) are the main cause of Hereditary Breast and Ovarian Cancer syndrome (HBOC). Methods In this study we evaluated the mutational profile and prevalence of BRCA ... -
Breakdown of the ponderomotive approximation as an acceleration mechanism in wave-particle nonlinear dynamics
(2017) [Journal article]In the present analysis, we study the dynamics of charged particles submitted to the action of slowly modulated electromagnetic carrier waves. While the velocity of the particles remains smaller than the carrier’s ... -
Breve descrição de um projeto para ensino de física na 3. série do 1. grau
(1995) [Journal article]É feita uma breve descrição dos materiais instrucionais (texto, equipa mento, vídeo), produzidos no IFUFRGS, para ensino de Física no último ano da nossa escola primária. -
Uma breve retrospectiva para compreender a abordagem cognitiva das emoções : revisão de literatura
(2007) [Journal article]O presente trabalho expõe um panorama histórico com algumas teorias sobre emoção ao longo da história da ciência ocidental. O objetivo é contribuir para a compreensão do contexto científico no qual se originou a abordagem ... -
Bridge over troubled gas : clusters and associations under the SMC and LMC tidal stresses
(2015) [Journal article]We obtained Southern Astrophysical Research telescope B and V photometry of 14 star clusters and two associations in the Bridge tidal structure connecting the Large and Small Magellanic Cloud (LMC and SMC). These objects ... -
Bromine and Chlorine determination in cigarette tobacco using microwave-induced combustion and inductively coupled plasma optical emission spectrometry
(2011) [Journal article]A combustão iniciada com micro-ondas (MIC) foi aplicada para decomposição de amostras de tabaco de cigarro e subsequente determinação de bromo e cloro por espectrometria de emissão óptica com plasma indutivamente acoplado ... -
Brown dwarf census with the Dark Energy Survey year 3 data and thethin disc scale height of early L types
(2019) [Journal article]In this paper we present a catalogue of 11 745 brown dwarfs with spectral types rangingfrom L0 to T9, photometrically classified using data from the Dark Energy Survey (DES)year 3 release matched to the Vista Hemisphere ... -
BS 196 : an old star cluster far from the Small Magellanic Cloud main body
(2008) [Journal article]We present B and V photometry of the outlying Small Magellanic Cloud (SMC) star cluster BS 196 with the 4.1-m SOAR telescope. The photometry is deep (to V≈25), showing ≈ 3 mag below the cluster turnoff point at MV = 2.5 ... -
Building more realistic siliciclastic reservoir models through integration of depositional and diagenetic heterogeneities in a flow unit approach
(2012) [Journal article]Nesse artigo, é apresentada uma abordagem para caracterização e desenvolvimento de reservatórios baseada na análise de heterogeneidades deposicionais, suas hierarquias e como essas heterogeneidades devem ser focadas em um ... -
Buracos negros supermassivos : os monstros que se escondem no centro das galáxias
(2009) [Journal article] -
Uma busca por questões de Física do ENEM potencialmente não reprodutoras das desigualdades socioeconômicas
(2018) [Journal article]O Exame Nacional do Ensino Médio é o segundo maior exame em larga escala do mundo. No Brasil, o desempenho dos alunos nessa prova é o critério de seleção para cursos em instituições de ensino superior públicas e privadas. ... -
B, V and I photometry of the intermediate metallicity bulge globular clusters NGC 6325 and NGC 6355
(2003) [Journal article]Colour-Magnitude Diagrams are presented for the globular clusters NGC 6325 and NGC 6355. These clusters are embedded in crowded bulge fields. Both clusters are concentrated and have blue Horizontal Branches, and NGC 6325 ... -
BVI photometry and integrated spectroscopy of the very young open clusters Ruprecht 119, NGC 6318 and BH 245
(2000) [Journal article]We present CCD BV I observations obtained for stars in the fields of the unstudied or poorly studied open clusters Ruprecht 119, NGC6318, and BH245 projected close to the direction towards the Galactic centre.We measured ... -
Bvri and h(alpha) surface photometry of the triple-ringed galaxy IC 4214
(1997) [Journal article]BVRI and Ha CCD surface photometry is presented for the Sab system IC 4214, an example of a galaxy with three rings and no conventional bar. We obtained isophote maps, luminosity profiles, and basic photometric parameters. ... -
BV surface photometry of southern galaxies. I. NGC 4507
(1986) [Journal article]From B and V photographic surface photometry we have obtained photometric parameters, mean luminosity profiles, and B- V color indices for the barred spiral galaxy NGC 4507. The decomposition of the mean-luminosity B ...