10,019 research outputs found
Polyoxometalate (POM)-layered double hydroxides (LDH) composite materials: design and catalytic applications
Layered double hydroxides (LDHs) are an important large class of two-dimensional (2D) anionic lamellar materials that possess flexible modular structure, facile exchangeability of inter-lamellar guest anions and uniform distribution of metal cations in the layer. Owing to the modular accessible gallery and unique inter-lamellar chemical environment, polyoxometalates (POMs) intercalated with LDHs has shown a vast array of physical properties with applications in environment, energy, catalysis, etc. Here we describe how polyoxometalate clusters can be used as building components for the construction of systems with important catalytic properties. This review article mainly focuses on the discussion of new synthetic approaches developed recently that allow the incorporation of the element of design in the construction of a fundamentally new class of materials with pre-defined functionalities in catalytic applications. Introducing the element of design and taking control over the finally observed functionality we demonstrate the unique opportunity for engineering materials with modular properties for specific catalytic applications
Increasing Compression Ratio of Low Complexity Compressive Sensing Video Encoder with Application-Aware Configurable Mechanism
With the development of embedded video acquisition nodes and wireless video
surveillance systems, traditional video coding methods could not meet the needs
of less computing complexity any more, as well as the urgent power consumption.
So, a low-complexity compressive sensing video encoder framework with
application-aware configurable mechanism is proposed in this paper, where novel
encoding methods are exploited based on the practical purposes of the real
applications to reduce the coding complexity effectively and improve the
compression ratio (CR). Moreover, the group of processing (GOP) size and the
measurement matrix size can be configured on the encoder side according to the
post-analysis requirements of an application example of object tracking to
increase the CR of encoder as best as possible. Simulations show the proposed
framework of encoder could achieve 60X of CR when the tracking successful rate
(SR) is still keeping above 90%.Comment: 5 pages with 6figures and 1 table,conferenc
Electroweak radiative corrections to triple photon production at the ILC
In this paper, we present the precision predictions for three photon
production in the standard model (SM) at the ILC including the full
next-to-leading (NLO) electroweak (EW) corrections, high order initial state
radiation (h.o.ISR) contributions and beamstrahlung effects. We present the LO
and the NLO EW+h.o.ISR+beamstrahlung corrected total cross sections for various
colliding energy when and the kinematic
distributions of final photons with at ILC, and find
that the NLO EW corrections, the h.o.ISR contributions and the beamstrahlung
effects are important in exploring the process .Comment: 6 pages, 8 figures, accepted for publication in Physics Letters
Polyethylenimine-Modified Multiwalled Carbon Nanotubes for Plasmid DNA Gene Delivery
An efficient molecular delivery technique based on the transporting high-molecular-weight PEI 600K-modified multiwalled carbon nanotubes (PEI 600K-MWCNTs) into cell membranes is reported. The PEI 600K-MWCNTs exhibit low cytotoxicity and its associated plasmid DNA (pDNA) is delivered to cells efficiently, and the green fluorescent protein (GFP) levels up to 18 times higher than that of naked DNA were observed
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