Results 131 to 140 of about 156,592 (295)

Origin and history of the beaver introduction in South America

open access: yes, 2014
The introduction of the North American beaver (Castor canadensis) to Tierra del Fuego is a widely known example of a successful biological invasion. However, the origin and history of this introduction bears closer scrutiny. Using historical documentation we provide evidence that beaver introduction occurred as a single release event of 20 beavers from
Pietrek, Alejandro G., Fasola, Laura
openaire   +1 more source

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

A map of Mexico and the Republic of Texas.

open access: yes
Map shows cities and provinces of Mexico and a separate Texas with boundaries extended to the "Rio Bravo del Norte." Relief shown by hachures. Scale not given.
Niles, John M. (John Milton), 1787-1856
core  

Solvent‐Mediated Reactivity Control of Lewis‐Paired Dopants as a Versatile Strategy for Tunable and Stable Doping of Organic Semiconductors

open access: yesAdvanced Materials, EarlyView.
Solvent‐mediated reactivity control of Lewis‐paired dopants enables highly efficient, finely tunable, and stable doping of organic semiconductors. The optimally doped semiconductor films exhibit superior thermoelectric performance and doping stability, feature delocalized polarons along structurally ordered polymer backbones, and outperform ...
Sang Beom Kim   +5 more
wiley   +1 more source

Laser‐Assisted Phase Engineering of 2D MoS2 for Efficient Solution‐Processed Electronics

open access: yesAdvanced Materials, EarlyView.
Here, local laser‐assisted phase transition from solution‐processed phase‐pure 1T′ to 2H MoS2 is shown to critically depend on the irradiation atmosphere. While processing in air leads to damaged insulating regions, inert conditions yield semiconducting 2H domains, enabling direct field‐effect transistor patterning with optimized lateral 1T′‐2H MoS2 ...
Anna Zhuravlova   +10 more
wiley   +1 more source

Diseño y viabilidad de la integración sudamericana (Tema Central)

open access: yes, 2010
En el artículo se analizan los que el autor considera los dos temas cruciales en la construcción del espacio común sudamericano propuesto por UNASUR: la adecuación entre los objetivos integracionistas y los medios establecidos por los países ...
Cimadamore, Alberto D.
core  

L'Irlande et l'Amérique latine

open access: yes, 1998
Since the 16th century many Irish soldiers, missionaries and emigrants have played a role in the history of South America. But these historic and cultural links have been neglected by the Irish State, which has established only limited diplomatic links ...
Gillissen, Christophe
core   +1 more source

Weak In‐Plane Ferromagnetism and Electronic Nematicity in the Distorted Triple‐Q Magnetic Phase of Co1/3TaS2

open access: yesAdvanced Materials, EarlyView.
Co1/3TaS2${\rm Co}_{1/3}{\rm TaS}_{2}$ hosts a triple‐Q noncoplanar antiferromagnetic state with coexisting Z3${\rm Z}_3$ electronic nematicity. We report rotational hysteresis observed in both magnetoresistance and magnetic torque, revealing strongly pinned in‐plane weak ferromagnetic moments in the triple‐Q phase and the magnetism‐driven nature of ...
Joonyoung Choi   +5 more
wiley   +1 more source

The Chanka: Archaeological Research in Andahuaylas (Apurimac), Peru [PDF]

open access: yes, 2010
In AD 1438 a battle took place outside the city of Cuzco that changed the course of South American history. The Chanka, a powerful ethnic group from the Andahuaylas region, had begun an aggressive program of expansion.
Kellett, Lucas C.   +2 more
core  

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