Argonaute system of Kordia jejudonensis is a heterodimeric nucleic acid-guided nuclease.

We purified and characterized a prokaryotic argonaute (pAgo) (KjMP) and its associated protein (KjAA) from a bacterium Kordia jejudonensis. The two proteins present as a complex were revealed by the copurification of KjAA with His-tagged KjMP by Ni-NTA affinity column. The KjAA/KjMP complex was a heterodimer evaluated from the molecular weight estimated using size exclusion chromatography.

Influence of Self-Heating Effect on Interface Trap Generation in Highly Flexible Single-Crystalline Si Nanomembrane Transistors.

We analyze the interface trap states generated by the self-heating effect in flexible single-crystalline Si nanomembrane (sc-Si NM) transistors. Despite the excellent device performance (: ~61 mV/dec, : ~10, Nit: ~5 × 10 cm, eff: ~250 cm²/V·s) and mechanical flexibility ( ═ 1 mm) of sc-Si NM transistors on a polymer substrate, they are vulnerable to thermal reliability issues due to the poor thermal conductivity ( < 1 W/m·K) of the polymer substrate. Understanding the detailed mechanism driving heat-related device degradation is key to improving device reliability, life expectancy, and overall device performance.

Dependence of Grain Size on the Performance of a Polysilicon Channel TFT for 3D NAND Flash Memory.

We investigated the dependence of grain size on the performance of a polycrystalline silicon (poly-Si) channel TFT for application to 3D NAND Flash memory devices. It has been found that the device performance and memory characteristics are strongly affected by the grain size of the poly-Si channel. Higher on-state current, faster program speed, and poor endurance/reliability properties are observed when the poly-Si grain size is large.

Valley-engineered ultra-thin silicon for high-performance junctionless transistors.

Extremely thin silicon show good mechanical flexibility because of their 2-D like structure and enhanced performance by the quantum confinement effect. In this paper, we demonstrate a junctionless FET which reveals a room temperature quantum confinement effect (RTQCE) achieved by a valley-engineering of the silicon. The strain-induced band splitting and a quantum confinement effect induced from ultra-thin-body silicon are the two main mechanisms for valley engineering.

Effects of combined exercise on cardiovascular risk factors and serum BDNF level in mid-aged women.

Purpose: The purposes of this study is first to examine a positive effect of long term combined exercise including aerobic and resistance exercise on increasing level of serum BDNF, and investigate how aerobic exercise is related to improving BDNF circulation and resistance exercise improves fat oxidation in mid-aged women.

Methods: Initially, 30 mid-aged women, according to their exercise preference, was randomly assigned as a non-exercise group (n=7, control group; CG) and exercise group (n=23). Then, 23 exercise participants were divided by aerobic exercise group (n=15, AEG) and combination of aerobic and resistance exercise group (n=8, CEG).