Results 41 to 50 of about 156,592 (295)

Late Quaternary Variations in the South American Monsoon System as Inferred by Speleothems—New Perspectives Using the SISAL Database

open access: yesQuaternary, 2019
Here we present an overview of speleothem δ18O records from South America, most of which are available in the Speleothem Isotopes Synthesis and Analysis (SISAL_v1) database.
Michael Deininger   +3 more
doaj   +1 more source

Kinematics of the South Atlantic rift [PDF]

open access: yesSolid Earth, 2013
The South Atlantic rift basin evolved as a branch of a large Jurassic–Cretaceous intraplate rift zone between the African and South American plates during the final break-up of western Gondwana. While the relative motions between South America and Africa
C. Heine, J. Zoethout, R. D. Müller
doaj   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola   +4 more
wiley   +1 more source

The history of the Society of Jesus in Colombia, 1844-1861

open access: yes, 2011
This thesis examines the activity of the Jesuits in Colombia during the nineteenth century; it demonstrates how their return to the country in 1844 became a highly controversial political issue until 1884, when the national government authorized their ...
Salcedo Martinez, Jorge Enrique   +1 more
core   +2 more sources

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Armies, politics and revolution. Chile, 1780-1826

open access: yes, 2011
This thesis studies the political role of the Chilean military during the years 1780-1826. Beginning with the last decades of the eighteenth century and ending immediately after the last royalist contingents were expelled from the island of Chiloé, this ...
Ossa Santa Cruz, Juan Luis
core   +2 more sources

Survivors and colonizers: Contrasting biogeographic histories reconciled in the Antarctic freshwater copepod Boeckella poppei

open access: yesFrontiers in Ecology and Evolution, 2022
Two main hypotheses have been proposed to explain the contemporary distribution of Antarctic terrestrial biota. We assess whether the current distribution of maritime Antarctic populations of the freshwater copepod Boeckella poppei is the result of (1) a
Claudia S. Maturana   +21 more
doaj   +1 more source

Genomic history of coastal societies from eastern South America

open access: yesNature Ecology & Evolution, 2023
AbstractSambaqui (shellmound) societies are among the most intriguing archaeological phenomena in pre-colonial South America, extending from approximately 8,000 to 1,000 years before present (yr bp) across 3,000 km on the Atlantic coast. However, little is known about their connection to early Holocene hunter-gatherers, how this may have contributed to
Ferraz, T.   +55 more
openaire   +6 more sources

Interaction of HS1BP3 with cortactin modulates TKS5 localisation, cell secretion and cancer malignancy

open access: yesMolecular Oncology, EarlyView.
Here, we demonstrate that HS1BP3 interacts with Cortactin through a proline‐rich region (PRR3.1) and show that this interaction, and HS1BP3 itself, promote cancer cell proliferation and invasion. Inhibition of this interaction leads to build‐up of TKS5 in multivesicular endosomes and altered secretion of CD63 and CD9, providing an explanation for the ...
Arja Arnesen Løchen   +9 more
wiley   +1 more source

Tracing the Maternal Lineages and Historical Biogeography of southern South American Hollies (Ilex, Aquifoliaceae) [PDF]

open access: yesAnais da Academia Brasileira de Ciências
This study aims to clarify the evolutionary history of maternal lineages of southern South American Ilex taxa and their divergence times and dispersal patterns.
ALEXANDRA MARINA GOTTLIEB
doaj   +2 more sources

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