First-principle calculations are used to explore the use of magnetic degrees of freedom in catalysis. We use the Vienna Ab-Initio Simulation Package to investigate both L1 0-ordered FePt and CoPt bulk materials and perform supercell calculations for FePt nanoclusters containing 43 atoms. As the catalytic activity of transition-metal elements and alloys involves individual d levels, magnetic all...

To develop safer and more effective vectors for gene therapy of X-linked severe combined immunodeficiency (SCID-X1), we have evaluated new self-inactivating lentiviral vectors based on the HIV virus. The CL20i4-h c-Revgen vector contains the entire human common chain ( c) genomic sequence driven by the c promoter. The CL20i4-EF1 -h cOPT vector uses a promoter fragment from the eukaryotic elonga...

Wireless LANs have become increasingly popular for providing high data rate network access. Ideally, a large-scale wireless LAN is designed such that there are no gaps in its coverage. It is also desirable to minimize the number of access points used in order to minimize the cost of equipment, installation and maintenance. In this paper, we propose a grid-based approximation algorithm to comput...

This study was performed on 1350 school children from 9 different villages in Sharkia Governorate to investigate the real situation of endemicity of fascioliasis in the area. Stool examination using modified Kato thick smear method was performed to detect Fasciola infection and other parasites. Those with negative stool samples were examined serologically by ELISA test to detect anti-Fasciola I...

Quantum devices can be used to solve constrained combinatorial optimization (COPT) problems thanks the use of penalization methods embed COPT problem’s constraints in its objective obtain a quadratic unconstrained binary (QUBO) reformulation COPT. However, particular way which this is carried out affects value penalty parameters, as well number additional variables that are needed desired QUBO ...

Chirality-controlled synthesis of single-walled carbon nanotubes (SWCNTs) is a prerequisite for their practical applications in electronic and optoelectronic devices. We report here a novel bimetallic CoPt catalyst for the selective growth of high quality SWCNTs with a narrow chirality distribution at relatively high temperatures of 800 °C and 850 °C using atmospheric pressure alcohol chemical ...

Post-deposition rapid thermal annealing (RTA) was performed on the Cr-less Co20at%Pt alloy with a Mn diffusion layer on top. A value of about 8 10 erg/cm3 was obtained for the as-deposited film and it decreased only up to about 10% after annealing. The high intergranular exchange coupling of the as-deposited CoPt film was suppressed by RTA and the coercivity increased dramatically from about 22...