The limb bud is induced in the lateral plate mesoderm in response to signals thought to be relayed in several steps from the embryo midline to the periphery (reviewed by Martin, 1998). Growth and patterning of the limb bud is organized by three signaling centers that arise before or soon after initial budding, and whose activities polarize pattern formation along the three axes of the limb: ant...

1327 Soil Sci. Soc. Am. J. 73:1327-1334 doi:10.2136/sssaj2008.0276 Received 20 Aug. 2008. *Corresponding author ([email protected]). © Soil Science Society of America 677 S. Segoe Rd. Madison WI 53711 USA All rights reserved. No part of this periodical may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or any informat...

Scholars who want to perform cross-national comparative research rely on data provided by International survey projects, which study the same concepts in varying countries and periods using different question wordings scales. In this article, we propose a process combine analyse pertaining concept—institutional trust—when measures sources differ. We show how combined 1327 surveys conducted from...

En el contexto de la mejora Formación Inicial Docente, y como insumo para retroalimentar los programas formativos futuros profesores, artículo busca develar las representaciones sobre política educativa que poseen estudiantes ingresan a estudiar Pedagogía en cinco universidades regionales del Estado, ubicadas zona norte, centro, sur austral Chile. función ello, muestra presente estudio correspo...

The investigation of extreme space weather events can yield important information about the solar activity. Here, we present reconstruction auroral oval position and size based on Bayesian inference for nine historical geomagnetic storms between 1716 1882, including Carrington event in 1859, by using ground-based observations, which enables us to derive Kp index first time. results latter show ...