The extracellular nuclease activities of Alteromonas espejiana sp. BAL 31 are mediated by at least two distinct protein species that differ in molecular weights and catalytic properties. The two species that have been purified to homogeneity and characterized, the "fast" (F) and "slow" (S) enzymes, both possess an exonuclease activity that shortens both strands of duplex DNA, with the F nucleas...

Ultraviolet hyperchromicity experiments indicate that in DNA duplex formation, a C-T mismatch is destabilizing in the center of a duplex, but behaves as a stable base pair at the terminus of a duplex. The C-T base pair is thought to contain two hydrogen bonds, but has thermodynamic parameters (delta Ho and delta Go of dissociation) that are similar to a G-C base pair. AMBER molecular mechanics ...

Molecules that reversibly bind DNA and trigger the formation of non-Watson-Crick secondary structures would be useful in the design of dynamic DNA nanostructures and as potential leads for new therapeutic agents. We demonstrate that coralyne, a small crescent-shaped molecule, promotes the formation of a duplex secondary structure from homo-adenine oligonucleotides. AFM studies reveal that the s...

Recent work suggests that electrons can travel through DNA and other chiral molecules in a spin-selective manner, but little is known about the origin of this spin selectivity. Here we describe experiments on magnetized DNA-modified electrodes to explore spin-selective electron transport through hydrated duplex DNA. Our results show that the two spins migrate through duplex DNA with a different...

We have examined the duplex DNA unwinding (helicase) properties of the Escherichia coli helicase II protein (uvrD gene product) over a wide range of protein concentrations and solution conditions using a variety of duplex DNA substrates including fully duplex blunt ended and nicked circular molecules. We find that helicase II protein is able to initiate on and completely unwind fully duplex DNA...

steel 2205 is one of the most famous duplex stainless steels. the microstructure of this steel composed of ferrite and austenite in similar amount. therefore, in order to improve mechanical properties through microstructure, thermo mechanical processes such as controlled hot rolling and forging should be applied. it is not possible to employ the usual heat treatment. it shows the importance of ...

With the explosive growth of mobile data, demand high-speed railway (HSR) passengers for broadband wireless access services urgently needs support ultra-high-speed scenario communication. Millimeter-wave (mmWave) can achieve high data transmission rates, but it is accompanied by propagation loss and vulnerability to blockage. To address this issue, developments directional antennas unmanned aer...

Abstract With the massive growth of wireless networks comes a bigger impact collisions and interference, which has negative effect on throughput energy efficiency. To deal with this problem, we propose an in-band collision interference detection scheme based full-duplex technology. study its performance, compare efficiency performance traditional half-duplex symmetric transmissions. Our analysi...

Wirelessly powered backscatter communications (WPBC) is an emerging technology for providing continuous energy and ultra-low power communications. Despite some progress in WPBC systems, resource allocation multiple devices towards secure (BC) efficient-energy harvesting (EH) requests a deep-insight investigation. In this paper, we consider system which full-duplex access point (AP) transmits mu...