Results 111 to 120 of about 46,776 (259)

Bimetallic M2B Boride Nanoparticles: A Robust and Recyclable Platform for Dehydration‐Driven Condensation of Aldehydes

open access: yesChemistryOpen, EarlyView.
Metal borides (MBs) emerge as a versatile class of nanomaterials, featuring high stability and bifunctional Lewis‐acidic/basic active sites. Despite these properties, their applications in CN bond formation are less explored. Herein, we report the first systematic use of M2B‐type boride nanoparticles as efficient and magnetically recoverable catalysts
Akram Ashouri   +6 more
wiley   +1 more source

One Europe, one product, two prices-the price disparity in the EU [PDF]

open access: yes
This article examines the price dispersion in the European Union in the last fifteen years (1990-2005). The analysis of price convergence is examined on aggregate and disaggregate levels.
Joanna Wolszczak-Derlacz
core  

Electronic phase separation in insulating (Ga,Mn)As with low compensation: Super-paramagnetism and hopping conduction

open access: yes, 2018
In the present work, low compensated insulating (Ga,Mn)As with 0.7% Mn is obtained by ion implantation combined with pulsed laser melting. The sample shows variable-range hopping transport behavior with a Coulomb gap in the vicinity of the Fermi energy ...
Böttger, Roman   +8 more
core   +1 more source

Engaging the public in plant science: Communication facilitators and barriers of scaling up a citizen science campaign

open access: yesPeople and Nature, EarlyView.
Abstract Volunteers have been involved in nature observations for decades through citizen science initiatives, providing large data sets as well as problem identification that allow a more complete understanding of many natural phenomena. Although communication is a core component in citizen science, the key factors that determine its effectiveness in ...
Kristiina Gibson   +18 more
wiley   +1 more source

TGA16 Type IGBT Converter for High-speed Test EMUs

open access: yes, 2014
The main technical parameters, power circuit principle, structure and cooling system of the TGA16 type IGBT converter employed in the high-speed test EMUs were introduced, as well as the technical characteristics of the converter. The test proved the converter to meet operation demand of the hish-speed test EMUs.
WENG Xing-fang, LIU Da, ZOU Dang-bing
openaire   +1 more source

The long road to EMU: The Economic and Political Reasoning behind Maastricht [PDF]

open access: yes
This paper aims to examine whether the economic and political reasoning behind Maastricht is consistent with earlier approaches to monetary integration.
Francisco Torres
core   +1 more source

Ionogel Actuators: A Review

open access: yesSmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao   +5 more
wiley   +1 more source

Parameter Design and Stability Analysis of Double-Loop Control for High-speed EMU 4QS-Converter

open access: yes机车电传动, 2020
Double-grid-frequency fluctuation exists in DC-link voltage of EMU 4QS-converter whose grid-side current contains much ripple of equivalent switching frequency.
Yue WANG   +4 more
doaj  

Covalent Functionalization of NiFe Layered Double Hydroxides using Tris(Hydroxymethyl)Aminomethane

open access: yesSmall, EarlyView.
Covalent functionalization of NiFe layered double hydroxides with tris(hydroxymethyl)aminomethane enables controlled growth, enhanced structural order, and improved processability. Temporary TRIS anchoring promotes stable water‐based inks and binder‐free electrode fabrication, leading to enhanced oxygen evolution activity and long‐term stability under ...
Alvaro Seijas Da Silva   +8 more
wiley   +1 more source

Convergence of Monetary Transmission in EMU New Evidence [PDF]

open access: yes
This paper examines how the pass-through of monetary policy measures in 6 EMU countries has evolved over time and whether there is convergence in monetary transmission.
Jakob de Haan   +2 more
core  

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