Cliff
Mostrando 25-36 de 37 artigos, teses e dissertações.
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25. The eolianites between Sanga do Cabral and Botucatu formations in Rio Grande do Sul State, Brazil
This paper discusses the facies distribution of Mesozoic eolian sandstones between the Sanga do Cabral and Botucatu formations and also their contact relationships, in São Leopoldo area, State of Rio Grande do Sul (RS), southern Brazil. The main distinctive characteristics regarding these sandstones and formations are the mineralogical composition, paleocur
Anais da Academia Brasileira de Ciências. Publicado em: 2000-06
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26. Desenvolvimento somÃtico e sensÃrio-motor e padrÃo do consumo alimentar, em ratos: efeitos do tratamento com inibidor de recaptaÃÃo da serotonina durante o perÃodo de crescimento rÃpido do encÃfalo
It was investigated in this work the influences of the treatment with selective serotonin reuptake inhibitor, over the reflex-ontogeny, somatic maturation and adult pattern of food intake. Male Wistar rats were divided in groups, receiving daily, from 1st to 21st day of life, the following treatments, s.c.: Ingenuous (Ing, n=26), any treatment; Saline (Sal,
Publicado em: 1998
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27. Arbovirus infection increases with group size.
Buggy Creek (BCR) virus is an arthropod-borne alphavirus that is naturally transmitted to its vertebrate host the cliff swallow (Petrochelidon pyrrhonota) by an invertebrate vector, namely the cimicid swallow bug (Oeciacus vicarius). We examined how the prevalence of the virus varied with the group size of both its vector and host. The study was conducted in
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28. Appropriate leads in electrocardiography.
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29. Cliff swallows and the power of behavioral ecology
The National Academy of Sciences.
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30. Spinal bony bridging and carditis in Reiter's disease.
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31. Centaurea corymbosa, a cliff-dwelling species tottering on the brink of extinction: A demographic and genetic study
Centaurea corymbosa (Asteraceae) is endemic to a small area (≤3 km2), and <500 individuals reproduce in any given year. Nevertheless, enzyme polymorphism was found within and among the six local extant populations, the most distant at 2.3 km. Levels of gene flow among populations and seed and pollen dispersal data indicated very low dispersal capacity
The National Academy of Sciences of the USA.
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32. Peroxisome Proliferator-Activated Receptor γ Target Gene Encoding a Novel Angiopoietin-Related Protein Associated with Adipose Differentiation
The nuclear receptor peroxisome proliferator-activated receptor γ regulates adipose differentiation and systemic insulin signaling via ligand-dependent transcriptional activation of target genes. However, the identities of the biologically relevant target genes are largely unknown. Here we describe the isolation and characterization of a novel target gene i
American Society for Microbiology.
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33. Separate Cl- conductances activated by cAMP and Ca2+ in Cl(-)-secreting epithelial cells.
We studied the cAMP- and Ca2(+)-activated secretory Cl- conductances in the Cl(-)-secreting colonic epithelial cell line T84 using the whole-cell patch-clamp technique. Cl- and K+ currents were measured under voltage clamp. Forskolin or cAMP increased Cl- current 2-15 times with no change in K+ current. The current-voltage relation for cAMP-activated Cl- cur
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34. Heritable basis for choice of group size in a colonial bird
Sizes of most kinds of animal groups vary considerably within a population, with group size often causing direct effects on the fitness of group members. Although the consequences of varying group size have been well studied, the causes of variation in group size remain poorly known for most animals. Groups might vary in size because different individua
The National Academy of Sciences.
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35. Prehistoric extinction of birds on Mangaia, Cook Islands, Polynesia.
Mangaia (Cook Islands) consists of a weathered volcanic interior encircled by limestones known as the makatea. Excavations at Tangatatau Rockshelter (site MAN-44), located on the inner cliff of the makatea, produced a stratified sequence of Polynesian artifacts and faunal remains ranging from A.D. 1000-1100 to A.D. 1500-1600. Resident species of birds repres
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36. Exploration of Inorganic C and N Assimilation by Soil Microbes with Time-of-Flight Secondary Ion Mass Spectrometry†
Stable C and N isotopes have long been used to examine properties of various C and N cycling processes in soils. Unfortunately, relatively large sample sizes are needed for accurate gas phase isotope ratio mass spectrometric analysis. This limitation has prevented researchers from addressing C and N cycling issues on microbially meaningful scales. Here we ex
American Society for Microbiology.