Results 81 to 90 of about 2,259,543 (335)

Compact Silicon-Micromachined Wideband 220–330-GHz Turnstile Orthomode Transducer

open access: yesIEEE Transactions on Terahertz Science and Technology, 2019
This paper reports on a turnstile-junction orthomode transducer (OMT) implemented by silicon micromachining in the 220–330-GHz band. Turnstile OMTs are very wideband and allow for co-planar ports but require accurate and complex geometries, which makes ...
A. Gomez-Torrent, U. Shah, J. Oberhammer
semanticscholar   +1 more source

“New” Nationalism and Autochthony – Tales of Origin as Political Cleavage „Neuer“ Nationalismus und Autochthonie – Ursprungsmythen als politische Konfliktlinie

open access: yesAfrica Spectrum, 2009
The conflicts in Liberia, Eastern DRC and Côte d’Ivoire can be “read” as “wars of modernity” as they are concerned with the composition of their respective polities: who is a citizen and who is not.
Morten Bøås
doaj  

IODP Expedition 330: Drilling the Louisville Seamount Trail in the SW Pacific

open access: yesScientific Drilling, 2013
Deep-Earth convection can be understood by studying hotspot volcanoes that form where mantle plumes rise up and intersect the lithosphere, the Earth’s rigid outer layer.
Anthony A.P. Koppers   +3 more
doaj   +1 more source

Unlocking High‐Performance in All‐Organic Solar Cells by the Development of Organic Electrodes with No Acid and High‐Temperature Treatment and the Effective Preparation Thereof on Organic Multilayer Films

open access: yesAdvanced Functional Materials, EarlyView.
The developed all‐organic solar cells achieve a power conversion efficiency of 8.7%, more than double the previous record. In addition, bioplastic substrates are used to produce environmentally friendly solar cells with an efficiency of 8.6%. These results are achieved by developing high‐performance organic electrodes without acid doping or high ...
Keiju Hashida   +12 more
wiley   +1 more source

Betwixt Droughts and Floods: Flood Management Politics in Thailand

open access: yesJournal of Current Southeast Asian Affairs, 2015
Attempting to create greater understanding of the political dynamics that influence domestic disaster relief and management (DRM) in Thailand, this article takes a closer look at these dynamics by outlining the main actors involved in flood-related DRM ...
Naila Maier-Knapp
doaj  

Recent Advances in Highly Luminescent Carbon Dots

open access: yesAdvanced Functional Materials, EarlyView.
Here, a comprehensive summary of the advancements is provided in highly luminescent carbon dots across various luminescence bands since their discovery in 2004. It systematically covers the synthesis, structural characteristics, preparation strategies, and essential purification of these carbon dots, along with their applications in efficient ...
Yupeng Liu   +6 more
wiley   +1 more source

miR-330-5p targets SPRY2 to promote hepatocellular carcinoma progression via MAPK/ERK signaling

open access: yesOncogenesis, 2018
MicroRNAs (miRNAs) have been identified as critical modulators of cell proliferation and growth, which are the major causes of cancer progression including hepatocellular carcinoma (HCC).
S. Xiao   +5 more
semanticscholar   +1 more source

ASEAN’s Preferential Trade Agreements (PTA) Strategy

open access: yesJournal of Current Southeast Asian Affairs, 2011
This paper provides a diversification explanation in order understand the development of PTAs in Southeast Asia. I argue that an important reason why ASEAN states participate in PTAs has been to diversify existing trade ties and to reduce overdependence ...
Guanyi Leu
doaj  

Large systems of path-repellent Brownian motions in a trap at positive temperature [PDF]

open access: yes, 2005
We study a model of $ N $ mutually repellent Brownian motions under confinement to stay in some bounded region of space. Our model is defined in terms of a transformed path measure under a trap Hamiltonian, which prevents the motions from escaping to ...
Adams, Stefan   +2 more
core   +5 more sources

Shape‐Stabilization of Phase Change Materials with Carbon‐Conscious Poly(hydroxy)Urethane Foams

open access: yesAdvanced Functional Materials, EarlyView.
Poly(hydroxy)urethane (PHU) foam, derivable from carbon dioxide (CO2) and bio‐based resources, is a promising material platform for shape‐stabilizing phase change materials (PCMs). We demonstrate the encapsulation of both paraffins and calcium chloride hexahydrate in PHU foam, achieving 48 stable thermal cycles by introducing 5 wt.% barium carbonate ...
Minjung Lee   +5 more
wiley   +1 more source

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