다중혈관 관상동맥 환자에서 y-문합을 이용하여 양쪽 내흉동맥만을 사용한 우회술의 조기 성적

抗原变异可使得多种致病微生物易于逃避宿主免疫应答。表达在感染红细胞表面的恶性疟原虫红细胞表面蛋白1（PfPMP1）与感染红细胞、内皮细胞、树突状细胞以及胎盘的单个或多个受体作用，在黏附及免疫逃避中起关键的作用。每个单倍体基因组var基因家族编码约60种成员，通过启动转录不同的var基因变异体为抗原变异提供了分子基础。

疟原虫var基因转换速率变化导致抗原变异[英]／Paul H, Robert P, Christodoulou Z, et al//Proc Natl Acad Sci U S A

[신간의 별자리x] 우리/미술, 그리고 ‘슬픔의 박물관’

Polydopamine and Its Derivative Materials: Synthesis and Promising Applications in Energy, Environmental, and Biomedical Fields

Since its discovery, the asymmetric Fano resonance has been a characteristic feature of interacting quantum systems. The shape of this resonance is distinctively different from that of conventional symmetric resonance curves. Recently, the Fano resonance has been found in plasmonic nanoparticles, photonic crystals, and electromagnetic metamaterials. The steep dispersion of the Fano resonance profile promises applications in sensors, lasing, switching, and nonlinear and slow-light devices.

The Fano resonance in plasmonic nanostructures and metamaterials

The narrow bandwidth and low amplification performance of a subwavelength acoustic resonator greatly limit its applications. In this study, broadband acoustic amplification using an array of two-dimensional quarter-wavelength resonators is investigated. A new acoustic resonator unit is designed, which contains one open end with an impedance-gradient meta-structure and another closed end to confine the acoustic transmission and achieve sound amplification. The sound pressure level (SPL) gain and bandwidth of the resonator can be controlled by changing its geometric parameters. In an energy-harvesting experiment, the broadband amplification resonator provides a 17.2-dB SPL gain and enhanced output voltages.

https://iopscience.iop.org/article/10.7567/APEX.11.117301/pdf

Broadband acoustic amplification via impedance-matched meta-structure resonator

In this work, an anti-icing structured surface was fabricated by combining laser ablation with hydrothermal treatment. A micro-patterned surface on a Ti alloy (TC4) substrate was easily fabricated by a highly effective nanosecond pulsed laser ablation. It was observed that titania (TiO2) nanostructures were formed by hydrothermal treatment in aqueous alkali on the laser ablated TC4 substrate to obtain the micro/nano-hierarchical structures. The growth mechanism of the tunable nanoarrays was discussed by the adjustment of hydrothermal temperature. The as-prepared samples exhibited excellent superhydrophobicity with contact angles greater than 160°. It was found that optimized hydrothermal treatment on laser-processed TC4 substrates could further enhance surface anti-icing property. The results showed that the delay time (DT) had been extended by achieving over 90 min for the water droplets to freeze on the as-prepared structured surfaces, providing great potential in various anti-icing applications.

https://www.mdpi.com/2079-6412/10/5/450/pdf

Tunable Hierarchical Nanostructures on Micro-Conical Arrays of Laser Textured TC4 Substrate by Hydrothermal Treatment for Enhanced Anti-Icing Property

Laser peening of 420 martensitic stainless steel using ultrashort laser pulses

https://iopscience.iop.org/article/10.7567/APEX.11.062702/pdf

Thermal lens effect for optimizing a passively Q-switched 1064 nm laser

Laser-induced -plasma-assisted ablation for crack-free laser processing of glass substrate is investigated. Different form laser breakdown at high laser fluence, a pulsed green laser is used to achieve the glass processing in air at much lower laser fluence. Laser beam goes though eh substrate first and then irradiates on a solid target behind. For laser fluence above target ablation threshold, plasma generated from target behind. For laser fluence above target ablation threshold, plasma generated from target ablation flies forward at a high speed. At a small target-to- substrate distance, there are strong interactions among laser light, target plasma and glass substrate at its rear side surface. With the target materials deposition on the glass surface or even doping into the glass substrate, light absorption characteristic at the near side surface is modified. The laser processing result is closely related to target-to-substrate distance, laser scanning speed and its repetition rate. Color marking, glass metalization and structuring can be achieved with the fine tune of the laser processing parameters.

Minghui Hong

Papers

Broadband acoustic amplification via impedance-matched meta-structure resonator

Tunable Hierarchical Nanostructures on Micro-Conical Arrays of Laser Textured TC4 Substrate by Hydrothermal Treatment for Enhanced Anti-Icing Property

Laser peening of 420 martensitic stainless steel using ultrashort laser pulses

Thermal lens effect for optimizing a passively Q-switched 1064 nm laser

Crack-free laser processing of glass substrate and its mechanisms