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Registros recuperados: 6
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Comparison of heat-shock responses between the hydrothermal vent shrimp Rimicaris exoculata and the related coastal shrimp Palaemonetes varians Inra
Cottin, D.; Shillito, B.; Chertemps, T.; Thatje, S.; Léger, N.; Ravaux, J..
The deep-sea vent shrimp Rimicaris exoculata is believed to occur at the hot end of the hydrothermal biotope in order to provide essential elements to its epibiosis. Because it is found close to hot ventingwater, R. exoculata lives in a highly fluctuating environment where temperature (2–40 °C in the swarms) can exceed its critical maximal temperature (33–38.5±2 °C). In order to understand how this vent shrimp copes with hyperthermia, we compared itsmolecular heat stress response following an acute but non-lethal heat-shock (1 h at 30 °C)with that of its monophyletic shallow-water relative, the shrimp Palaemonetes varians, known to frequently undergo prolonged exposure at temperatures up to 30 °C in its natural environment during summer. We isolated four...
Tipo: Journal Article Palavras-chave: EAU PEU PROFONDE; CHOC THERMIQUE; HYPERTHERMIE HEAT STRESS; HSP70; HYDROTHERMAL VENTS; REAL-TIME PCR; SHALLOW-WATER; SHRIMP.
Ano: 2010 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20117c70db10&uri=/notices/prodinra1/2011/05/
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Ion microprobe (SHRIMP) dates complex granulite from Santa Catarina, southern Brazil Anais da ABC (AABC)
HARTMANN,LÉO A.; SANTOS,JOÃO O. S.; McNAUGHTON,NEAL J.; VASCONCELLOS,MARCOS A. Z.; DASILVA,LUIZ C..
Complex polymetamorphic granulites have been dated in the Santa Catarina granulite complex of southern Brazil through SHRIMP study of zircon. This complex is dominated by intermediate-acid plutonic rocks and contains small volumes of mafic and ultramafic rocks, and minor quartzite and banded iron formation. Porphyroblasts of orthopyroxene, clinopyroxene and plagioclase in mafic and acid rocks are interpreted as magmatic remnants in a volumetrically dominant granoblastic aggregate (M1) of the same minerals and hornblende. Hornblende formed during a later M2 metamorphic event constitutes rims around pyroxene, but the hornblende is also rimmed by granoblastic simplectites of orthopyroxene, clinopyroxene, hornblende and plagioclase in a second granulite facies...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Granulites; SHRIMP; U/Pb geochronology; Santa Catarina granulite complex; Brazil; Symplectites; Zircon.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000400007
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Protolith age of Santa Maria Chico granulites dated on zircons from an associated amphibolite-facies granodiorite in southernmost Brazil Anais da ABC (AABC)
Hartmann,Léo A.; Liu,Dunyi; Wang,Yenbin; Massonne,Hans-Joachim; Santos,João O.S..
U-Pb dating of zircon was undertaken with the Beijing SHRIMP II (sensitive high resolution ion microprobe) on anamphibolite facies granodiorite and an almandine-albite granulite from the Santa Maria Chico Granulitic Complex, southern Brazilian Shield. This work was also done to unravel protolith ages which are often hidden in the array of partly reset data. The obtained metamorphic ages of the granodiorite gneiss and the granulite are 2035 ± 9 Ma and 2006 ± 3 Ma, respectively. These data are within the range of metamorphic ages determined in previous studies (2022 ± 18 Ma and 2031 ± 40 Ma). However, protolith ages for the granodiorite (2366 ± 8 Ma) and the granulite (2489 ± 6 Ma) were obtained which are outside the previously recognized range (>...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Protolith age; Paleoproterozoic; Zircon geochronology; Santa Maria Chico Granulitic Complex; SHRIMP.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000300014
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Recombinant expression and anti-microbial activity of anti-lipopolysaccharide factor (ALF) from the black tiger shrimp Penaeus monodon Inra
Somboonwiwat, K.; Marcos, M.; Tassanakajon, A.; Klinbunga, S.; Aumelas, A.; Romestand, B.; Gueguen, Y.; Boze, H.; Moulin, G.; Bachère, E..
Anti-lipopolysaccharide factors (ALFs), originally characterized from horseshoe crabs, have been recently identified from hemocytes of the black tiger shrimp, Penaeus monodon, by a genomic approach. In order to characterize the properties and biological activities of this immune effector in shrimp, ALFPm3, the most abundant isoform found in P. monodon, was expressed in the yeast Pichia pastoris. Large-scale production in fermentor provided 262 mg/l of recombinant ALFPm3 which was purified to homogeneity by single chromatography step on expanded-bed Streamline SP6XL. The rALFPm3 was further characterized in terms of N-terminal sequencing and mass spectrometry. Anti-microbial assays demonstrated that rALFPm3 has a broad spectrum of anti-fungal properties...
Tipo: Journal Article Palavras-chave: SHRIMP; CRUSTACEAN; ANTI-LIPOPOLYSACCHARIDE FACTOR; LPS-BINDING; ANTI6mICROBIAL ACTIVITY; VIBRIO; HEMOCYTE.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20092e49f543&uri=/notices/prodinra1/2010/10/
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SHRIMP U-Pb zircon dating of Pedras Grandes Suite, southern Santa Catarina State, Brazil Anais da ABC (AABC)
Jelinek,Andréa R.; Bastos-Neto,Artur C.; Leite,Jayme A.D.; Hartmann,Léo A.; McNaughton,Neal J..
Two major magmatic pulses of the granitic Florianópolis Batholith in Santa Catarina State, southern Brazil, occurred between 613±5Ma and 595±5 Ma, during the Neoproterozoic Brasiliano Cycle. These ages were obtained by U-Pb isotopic determinations with the sensitive high mass-resolution ion microprobe on igneous zircons from Pedras Grandes Suite in Santa Catarina State. Euhedral zircons remained unaltered close to a fluorite vein deposited at 180?C or more. These ages suggest a northern limit for the Pedras Grandes Suite, explaining the spatial relationship between the fluorite veins and the source rock.
Tipo: Info:eu-repo/semantics/article Palavras-chave: SHRIMP; Pedras Grandes Suite; Zircon; Geochronology; Fluorite.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652005000100010
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U-Pb zircon in situ dating with LA-MC-ICP-MS using a mixed detector configuration Anais da ABC (AABC)
Chemale Jr,Farid; Kawashita,Koji; Dussin,Ivo A.; Ávila,Janaína N.; Justino,Dayvisson; Bertotti,Anelise.
The LA-MC-ICP-MS method applied to U-Pb in situ dating is still rapidly evolving due to improvements in both lasers and ICP-MS. To test the validity and reproducibility of the method, 5 different zircon samples, including the standard Temora-2, ranging in age between 2.2 Ga and 246 Ma, were dated using both LA-MC-ICP-MS and SHRIMP. The selected zircons were dated by SHRIMP and, after gentle polishing, the laser spot was driven to the same site or on the same zircon phase with a 213 nm laser microprobe coupled to a multi-collector mixed system. The data were collected with a routine spot size of 25 μm and, in some cases, of 15 and 40 μm. A careful cross-calibration using a diluted U-Th-Pb solution to calculate the Faraday reading to counting rate conversion...
Tipo: Info:eu-repo/semantics/article Palavras-chave: MC-ICP-MS; SHRIMP; Faraday cups; Multi-ion Counting System; U-Pb in situ zircon dating.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000200005
Registros recuperados: 6
Primeira ... 1 ... Última
 

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