Bolide
Mostrando 1-7 de 7 artigos, teses e dissertações.
-
1. Os Bólides do programa ambiental de Hélio Oiticica
O texto aborda os Bólides de Hélio Oiticica, desenvolvidos no âmbito do Programa Ambiental, entre os anos de 1965-1966 e início de 1967. Nesse período, percebe-se que eles atuam no sentido de construir uma linguagem própria à vanguarda brasileira dos anos 1960, assumindo conotações fortemente éticas e políticas, além do plano estético. O texto e
ARS (São Paulo). Publicado em: 2011
-
2. Um percurso nos Bólides de Hélio Oiticica / Um percurso nos Bólides de Hélio Oiticica
O presente estudo analisa as transformações por que o Bólide passa no decurso da obra de Hélio Oiticica, na qual assume diferentes aspectos de 1963 a 1980. Pode-se dizer que, mais do que configurar objetos ou mesmo proposições, o Bólide oferece possibilidades abertas a um comportamento criativo. Ele é parte constitutiva de uma dinâmica própria ao P
Publicado em: 2009
-
3. Impact melting of frozen oceans on the early Earth: Implications for the origin of life
Without sufficient greenhouse gases in the atmosphere, the early Earth would have become a permanently frozen planet because the young Sun was less luminous than it is today. Several resolutions to this faint young Sun-frozen Earth paradox have been proposed, with an atmosphere rich in CO2 being the one generally favored. However, these models assume that th
-
4. Correlated terrestrial and marine evidence for global climate changes before mass extinction at the Cretaceous–Paleogene boundary
Terrestrial climates near the time of the end-Cretaceous mass extinction are poorly known, limiting understanding of environmentally driven changes in biodiversity that occurred before bolide impact. We estimate paleotemperatures for the last ≈1.1 million years of the Cretaceous (≈66.6–65.5 million years ago, Ma) by using fossil plants from North Dakot
The National Academy of Sciences.
-
5. Caribbean biogeography: molecular evidence for dispersal in West Indian terrestrial vertebrates.
The geological association of the Greater Antilles with North and South America in the late Cretaceous led to the hypothesis that the present Antillean biota reflects those ancient land connections. Molecular data from diverse West Indian amphibians and reptiles and their mainland relatives support a more recent derivation of the Antillean vertebrate fauna b
-
6. Mass extinctions: Sensitivity of marine larval types
Developmental types of marine invertebrates may be divided into planktotrophs, which feed on suspended food items, and nonplanktotrophs, which do not feed but are supplied with nutrients (yolk) parentally; these may represent high mortality-fecundity and low mortality-fecundity strategies, respectively. Most versions of the bolide impact hypothesis of mass e
-
7. An atmospheric pCO2 reconstruction across the Cretaceous-Tertiary boundary from leaf megafossils
The end-Cretaceous mass extinctions, 65 million years ago, profoundly influenced the course of biotic evolution. These extinctions coincided with a major extraterrestrial impact event and massive volcanism in India. Determining the relative importance of each event as a driver of environmental and biotic change across the Cretaceous-Tertiary boundary (KTB) c
The National Academy of Sciences.