Browsing by Title Artículos de revistas
Now showing items 3819-3838 of 4967
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(Geoscienceworld, 2020)New detrital zircon U-Pb geochronology data from the Cenozoic Magallanes-Austral Basin in Argentina and Chile similar to 51 degrees S establish a revised chronostratigraphy of Paleocene-Miocene foreland synorogenic strata ...
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(Pergamon Journals Ltd., 1986-12-18)Precursor feeding experiments to Annona reticulata leaves demonstrated that coclaurine and reticuline are both derived from the common lntermediate norcoclaurine; furthermore (S)-coclaurlne was found to be the speciflc ...
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(Sociedad de Biologia de Chile, 2006)Phytoplankton abundance in the surface mixed layer of the coastal ocean responds to environmental changes at various time scales. Here the "warm", "cold" and "neutral" phases of "three environmental cycles" have been jointly ...
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(Springer, 2020)Replacement of native forests by exotic monoculture plantations is the principal driver of land change in central Chile; it reduces the richness and abundance of native mammals. The presence of shrub vegetation in mature ...
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(Springer, 2017-06)Nomadic pastoralism and transhumance are ancient human adaptations to the movements of large herbivores, which themselves migrate to follow favorable environmental conditions. Free-ranging livestock production has been ...
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(ELSEVIER SCIENCE INC, 2010-06-25)Phosphofructokinase-2 (Pfk-2) belongs to the ribokinase family and catalyzes the ATP-dependent phosphorylation of fructose-6-phosphate, showing allosteric inhibition by a second ATP molecule. Several structures have been ...
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(Springer-Verlag, 2006)Maximum parsimony and Bayesian likelihood analysis of ribosomal DNA internal transcribed spacer (ITS) sequences from 55 samples representing 25 species, subspecies, and/or hybrids of Tropaeolum sect. Chilensia yielded ...
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(Oxford University Press, 2015)To a continuous action of a vector group on a C∗-algebra, twisted by the imaginary exponential of a symplectic form, one associates a Rieffel deformed algebra as well as a twisted crossed product. We show that the second ...
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(Oxford University Press, 2014)To a continuous action of a vector group on a C∗-algebra, twisted by the imaginary exponential of a symplectic form, one associates a Rieffel deformed algebra as well as a twisted crossed product. We show that the second ...
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(Academic Press, 2020)
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(Universidad de Concepcion, 2020)
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(Universidad de Concepción, Chile, 2020)Ripartites tricholoma collected in the Nature Reserve Altos de Cantillana, near Santiago is described as a first record of this fungal genus and species for Chile. This is a contribution to the knowledge of fungal diversity ...
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(2012)The formation of the nervous systems requires processes that coordinate proliferation, differentiation and migration of neuronal cells, which extend axons, generate dendritic branching and establish synaptic connections ...
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(American Institute of Aeronautics and Astronautics, 2018)An increased concern in space situational awareness has resulted from the rise in space debris and its threat to future space missions. For safety reasons, it is critically important to populate and maintain a catalog of ...
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(1985)The content of the simple indole alkaloid gramine in barley leaves decreased with age. Conversely, susceptibility to aphids increased in older plants. Population growth rate of the greenbug Schizaphis graminum correlated ...
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(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2004-08-01)Different types of placodes originate at the anterior border of the neural plate but it is still an unresolved question whether individual placodes arise as distinct ectodermal specializations in situ or whether all or a ...
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(ELSEVIER SCIENCE, 2005-07)It has been suggested that complementary proteins are involved in autoimmunity through a network involving idiotype-anti-idiotype reactions termed 'autoantigen complementarity'. We propose that complementary proteins, which ...
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(ELSEVIER SCIENCE BV, 2005-04-25)In a previous work, chemical modification of Cys-238 of Escherichia coli Pfk-2 raised concerns on the importance of the dimeric state of Pfk-2 for enzyme activity, whereas modification of Cys-295 impaired the enzymatic ...
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Role of glucose-1-phosphate and glucose-6-phosphate in glycogen synthesis by pigeon liver homogenate (1976)1. 1. Glucose-1-C14, G-6-P-1-C14 and G-1-P-l-C14 have been incubated with a pigeon liver homogenate. Incorporation of C14 into glycogen and CO2 were measured. 2. 2. The relative incorporation of C14 from G-6-P-1-C14 and ...