Results 161 to 170 of about 2,084,614 (325)

La China de Xi Jinping y el EEUU de Trump: Tensión global y el lugar de Sudamérica

open access: yes, 2017
We describe the position that seeks to occupy China in the concert of nations and the obstacles it faces. We hold that the policy of aggrandizement of the "national interest" that marks the Chinese advance is stabilized in the relation with Russia and the rest of Southeast Asia, and this "architecture" begins to be strengthened to try to circumvent the
openaire   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Structural and Chemical Studies of the Nanoscale Modifications Induced by Swift Heavy Ion Irradiation in SrTiO3 at Grazing Incidence

open access: yesAdvanced Functional Materials, EarlyView.
The nanoscale structural and chemical transformations in SrTiO3 under Swift‐Heavy‐Ion irradiation at grazing incidence are investigated, emphasizing the formation of well‐ordered nanohillocks at the surface of the material, demonstrating significant material decomposition in the created hillocks with: a phase separation of SrO and TiOx, a reduction in ...
Mohammad S. Jamal   +12 more
wiley   +1 more source

A 6000-year-long genomic transect from the Bogotá Altiplano reveals multiple genetic shifts in the demographic history of Colombia. [PDF]

open access: yesSci Adv
Krettek KL   +10 more
europepmc   +1 more source

Experimentally Validated Design Principles of D‐Block Transition Metal Single‐Atom Non‐Dissociative Chemisorption Solid‐State Hydrogen Storage Materials

open access: yesAdvanced Functional Materials, EarlyView.
A novel descriptor and a bottom‐up design principle are established to enable the rational design of hydrogen storage materials based on d‐block transition metal single‐atom COFs. By modulating H₂ adsorption through d‐orbital tuning, this approach achieves both high storage capacity and fast kinetics, while revealing a volcano‐type relationship between
Qiuyan Yue   +24 more
wiley   +1 more source

Ancient dog mitogenomes support the dual dispersal of dogs and agriculture into South America. [PDF]

open access: yesProc Biol Sci
Manin A   +43 more
europepmc   +1 more source

On the origin of HIV-1 subtype C in South America

open access: yesAIDS (London), 2008
Rachel Fontella   +2 more
semanticscholar   +1 more source

Highly Customizable Scaffold‐Type 3D Microelectrode Array Platform for Design and Analysis of the 3D Neuronal Network In Vitro

open access: yesAdvanced Functional Materials, EarlyView.
An innovative fabrication platform for 3D microelectrode arrays (MEAs) is presented, utilizing a 3D printer and the capillary action of electrically conductive inks. This approach enables the simple and versatile fabrication of 3D MEAs with complex structures.
Dongjo Yoon, Yoonkey Nam
wiley   +1 more source

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