Results 31 to 40 of about 508,443 (311)

Change, Collective Action, and Cultural Resilience in Páramo Management in Ecuador

Mountain Research and Development, 2019
This study examines how agricultural frontier expansion and grazing practices develop in the páramos under communal tenure in the northern Ecuadorian Andes and how rules to control them emerge within communal governance.
María López-Sandoval, Paola Maldonado
doaj   +1 more source

Bird surveys for REDD+: avian communities indicate forest degradation in a Peruvian coffee landscape [PDF]

, 2011
Shade coffee cultivation in the Peruvian Andes assists in reducing emissions from deforestation because it avoids conversion to non-forest land uses such as coca and sun grown coffee farming.
Bruno Verbist, Cagan Sekercioglu, Luc Lens, Raf Aerts, Sarah Spranghers   +4 more
core   +2 more sources

Tourist Traffic In The Aconcagua Massif Area

Quaestiones Geographicae, 2015
The aim of the article is an analysis of tourist traffic in the Aconcagua massif, one of the most popular peaks of the Seven Summits. On the basis of statistical data, the tourist traffic was analysed in a temporal and spatial perspective.
Marek Aneta, Wieczorek Małgorzata
doaj   +1 more source

Timing of the magmatism of the paleo-Pacific border of Gondwana: U-Pb geochronology of Late Paleozoic to Early Mesozoic igneous rocks of the north Chilean Andes between 20° and 31°S [PDF]

, 2014
Indexación: Web of Science; ScieloABSTRACT. U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma)
Maksaev, Víctor, Munizaga, Francisco, Tassinari, Colombo   +2 more
core   +1 more source

Thermisch kontrollierter chiraler supramolekularer Polymorphismus in Wasser

Angewandte Chemie, EarlyView.
Unter Verwendung eines amphiphilen Oligophenylenethinylen Derivats haben wir LCST‐gekoppelte Chiralität als Strategie zur Regulierung von thermoresponsivem supramolekularem Polymorphismus in Wasser etabliert. Bei Raumtemperatur bildet AggI diskrete Ansammlungen, die in der Nähe des LCST in elongierte helikale Fasern (AggII) übergehen und schlussendlich
Zulema Fernández, Yongsheng Li, Daniel Martínez, Julia Terlau, Myongsoo Lee, Bartolomé Soberats, Gustavo Fernández   +6 more
wiley   +1 more source

Mountains as Islands: Species Delimitation and Evolutionary History of the Ant-Loving Beetle Genus Panabachia (Coleoptera, Staphylinidae) from the Northern Andes

Insects, 2020
The ant-loving beetle genus Panabachia Park 1942 is a poorly studied beetle lineage from the new world tropics. We recently collected Panabachia from several previously unrecorded locations in the páramo biome of the high Ecuadorian Andes, with ...
Sofía I. Muñoz-Tobar, Michael S. Caterino   +1 more
doaj   +1 more source

Potential of a Neutrino Detector in the ANDES Underground Laboratory for Geophysics and Astrophysics of Neutrinos [PDF]

, 2012
The construction of the Agua Negra tunnels that will link Argentina and Chile under the Andes, the world longest mountain range, opens the possibility to build the first deep underground labo- ratory in the Southern Hemisphere.
G. A. Tammann, G. G. Raffelt, H. Behrens, H. Nunokawa, H. Nunokawa, N. Smith, P. A. N. Machado, R. Zukanovich Funchal, R. Z. Funchal, R. Z. Funchal, T. Mühlbeier, X. Bertou   +11 more
core   +2 more sources

Isolation und Reaktivtät eines quadratisch‐planaren Trisamidosilans

Angewandte Chemie, EarlyView.
Wir berichten über die Synthese und umfassende Charakterisierung eines quadratisch‐planaren Si(+IV)‐Hydrids, das von einem unsymmetrischen, trianionischen und dearomatisierten N,N,N‐Pincerliganden stabilisiert wird. Dieses System ermöglicht eine Element–Liganden‐kooperative Reaktivität als Alternative zur siliciumzentrierten Redoxchemie und erweitert ...
David M. J. Krengel, Xiaobai Wang, Christopher Golz, Regine Herbst‐Irmer, Oliver P. E. Townrow, Malte Fischer   +5 more
wiley   +1 more source

The onset of grasses in the Amazon drainage basin, evidence from the fossil record [PDF]

, 2020
Poaceae (the grass family) originated in the Cretaceous, but first dominate the palynological records of the Amazon drainage basin (ADB) in the Neogene (23 to 2.5 million years ago (Ma)).
Hoorn, Carina, Kirschner, Judith A.
core   +3 more sources

Oxytocin‐ und Vasopressin‐Photosonden zur Entschlüsselung der Neuropeptid‐Signalgebung mit hoher räumlicher und zeitlicher Präzision

Angewandte Chemie, EarlyView.
Neue biokompatible Oxytocin‐ und Vasopressin‐Photosonden mit modernsten Photocages. Diese Photosonden sind inaktiv und können mit spezifischen Lichtwellen entschützt werden, was eine Rezeptoraktivierung mit hoher zeitlicher und räumlicher Kontrolle ermöglicht. Abbildung erstellt mit https://BioRender.com ZUSAMMENFASSUNG Das Oxytocin/Vasopressin (OT/VP)
Konstantin Raabe, Predrag Kalaba, Xuan Ling Hilary Yong, Greta Crudeli, Sarah Melzer, Erik Keimpema, Victor Anggono, Markus Muttenthaler   +7 more
wiley   +1 more source