In the present study we discovered that col19a1, the gene encoding nonfibrillar collagen XIX, is expressed by subsets of hippocampal neurons. Although many NMJ-organizing cues contribute to central nervous system (CNS) synaptogenesis, whether similar roles for collagens exist at central synapses remained unclear. We previously discovered a family of nonfibrillar collagens that organize synaptic differentiation at the neuromuscular junction (NMJ). Su, Jianmin Gorse, Karen Ramirez, Francesco Fox, Michael A.Įxtracellular matrix (ECM) molecules contribute to the formation and maintenance of synapses in the mammalian nervous system. Finally we gratefully aknowledge the financial support the Consejo Nacional de Investigaciones CientÃficas y TÃ©cnicas (CONICETĬollagen XIX Is Expressed by Interneurons and Contributes to the Formation of Hippocampal Synapses We also wish to thank to the rest of the Organizing Committee: Gustavo Lozano, Ana MarÃa Llois, Laura Steren and Edith Goldberg and very specially to Javier Schmidt, Gustavo Ruano, Marcelo Romero, Lucila Cristina and Juan Carlos Moreno for their invaluable assistance during the event. The group of scientists participating had come from Argentina, Chile, Colombia, Cuba, Brazil, France, Spain, Switzerland and the USA We are indebted to all participants for their enthusiasm and contributions and to the members of the International Advisory Commitees. Following the trends of previous events, SLAFES XIX included seven plenary talks, eighteen invited talks and contributions, and 28 oral and 255 poster presentations, covering mostly the latest experimental and theoretical advances in Nanophysics, Nanomaterials and Nanotechnology, Spintronics, Magnetism, New Materials, Superconductivity, Surfaces and Interfaces, Low-Dimensional Systems, Materials Preparation and Characterization, Theory and Computing Simulations of Materials among other topics. This successful series of meetings has been organised in eight different countries, the last three held in MÃ©rida, Venezuela (2002), La Habana, Cuba (2004) and Puebla, MÃ©xico (2006). The Latin American Symposium on Solid State Physics is a forum where researchers and students from Latin America as well as leading scientists from other parts of the world get together to exchange information, strengthen collaborations and identify new challenges in Solid State Physics. The conference, covering all areas of Solid State Physics, is one of the most important and traditional meetings in Physics in our region.

This volume contains selected papers which have been presented at the XIX Latin American Symposium on Solid State Physics (SLAFES XIX) held at Puerto IguazÃº, Argentina, from 5-10 October 2008. Serquis, Adriana Balseiro, Carlos Bolcatto, Pablo PREFACE: XIX Latin American Symposium on Solid State Physics (SLAFES XIX) HASTA comenzÃ³ a operar en Mayo de 1998 y, junto con otros tres instrumentos solares, que se estÃ¡n instalando o se instalaron, harÃ¡n de El Leoncito un polo de observaciÃ³n solar importante en el Hemisferio Sur. DiseÃ±ado para detectar fulguraciones, el instrumento trabaja en dos modos (patrullaje y fulguraciÃ³n) con una resoluciÃ³n espacial de 1.5 arcseg por pixel y una resoluciÃ³n temporal de 2 seg. Todo el conjunto es controlado en forma remota por una PC, la cual ademÃ¡s adquiere datos del Sistema de Posicionamiento Global (GPS) y de la estaciÃ³n meteorolÃ³gica.

HASTA es un telescopio refractor de 110 mm con una distancia focal de 165 cm, un filtro Lyot sintonizable (Â☑Ã…) con un ancho de banda de 0.3 Ã… y una cÃ¡mara CCD de alta resoluciÃ³n (1280Ã-1024 pixels). Este instrumento estudiarÃ¡ la evoluciÃ³n de las fulguraciones solares desde tierra con alta resoluciÃ³n temporal y espacial.

Rovira, M.Įl Telescopio Solar en HÎ± (HÎ± Solar Telescope for Argentina (- HASTA-) fue recientemente instalado en la EstaciÃ³n AstronÃ³mica de Altura Carlos Ulrrico Cesco (OAFA) en El Leoncito.

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