Molecular Clouds
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Formação estelar no complexo de nuvens moleculares em Monoceros / Star Formation in the Molecular Cloud Complex in Monoceros
We compare two molecular clouds of the Monoceros Complex in order to study their physical conditions related to the early stages of star formation. The selected clouds, Rosette (RMC) and Monoceros R2 (Mon R2), are interesting regions due to their characteristics that may be confronted with the hypothesis of star formation triggered by high velocity clouds (H
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 04/05/2012
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2. "Dusty Plasmas: stellar winds and the interstellar medium" / "Plasmas empoeirados: ventos estelares e o meio interestelar"
In this work, we firstly discuss the propagation of Alfvén waves in dusty plasmas found in several astrophysical environments. The wave dispersion relation is modified giving rise to new damping mechanisms. There are in the literature observational data indicating the presence of dust near the surface of cool giant and supergiant stars. We developed a stell
Publicado em: 2005
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3. Diferentes propriedades físicas de condensações da região do escorpião / Physical properties of condensations of the scorpius region
Neste trabalho, propomos o estudo das propriedades físicas de 32 condensações localizadas na região do Escorpião, cujas coordenadas galácticas estão no intervalo 344° < l < 347° e 6° > b > -8. Suas propriedades físicas foram comparadas com as propriedades de condensações observadas em outras nuvens escuras. Procuramos destacar caract
Publicado em: 2005
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4. Diferentes propriedades físicas de condensações da região do escorpião / Physical properties of condensations of the scorpius region
Neste trabalho, propomos o estudo das propriedades físicas de 32 condensações localizadas na região do Escorpião, cujas coordenadas galácticas estão no intervalo 344° < l < 347° e 6° > b > -8. Suas propriedades físicas foram comparadas com as propriedades de condensações observadas em outras nuvens escuras. Procuramos destacar caract
Publicado em: 2005
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5. CLOUDS, a protocol for deriving a molecular proton density via NMR
We demonstrate the feasibility of computing realistic spatial proton distributions for proteins in solution from experimental NMR nuclear Overhauser effect data only and with minimal assignments. The method, CLOUDS, relies on precise and abundant interproton distance restraints calculated via a relaxation matrix analysis of sets of experimental nuclear Overh
The National Academy of Sciences.
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6. On the interactions between atmospheric radicals and cloud droplets: A molecular picture of the interface
How gas-phase materials become incorporated with cloud droplets has been an intriguing subject for decades, and considerable work has been done to understand the interactions between closed-shell molecules and liquid water. The interactions between open-shell radical species and liquid-phase cloud droplets, however, are not well understood. To probe thes
National Academy of Sciences.
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7. Self-assembling amphiphilic molecules: Synthesis in simulated interstellar/precometary ices
Interstellar gas and dust constitute the primary material from which the solar system formed. Near the end of the hot early phase of star and planet formation, volatile, less refractory materials were transported into the inner solar system as comets and interplanetary dust particles. Once the inner planets had sufficiently cooled, late accretionary inf
The National Academy of Sciences.
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8. Temperature dependence of metabolic rates for microbial growth, maintenance, and survival
Our work was motivated by discoveries of prokaryotic communities that survive with little nutrient in ice and permafrost, with implications for past or present microbial life in Martian permafrost and Europan ice. We compared the temperature dependence of metabolic rates of microbial communities in permafrost, ice, snow, clouds, oceans, lakes, marine and fre
National Academy of Sciences.
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9. A focal adhesion factor directly linking intracellularly motile Listeria monocytogenes and Listeria ivanovii to the actin-based cytoskeleton of mammalian cells.
The surface-bound ActA polypeptide of the intracellular bacterial pathogen Listeria monocytogenes is the sole listerial factor needed for recruitment of host actin filaments by intracellularly motile bacteria. Here we report that following Listeria infection the host vasodilator-stimulated phosphoprotein (VASP), a microfilament- and focal adhesion-associated