Lung transplantation may be the only intervention that can prolong survival and improve quality of life for those individuals with advanced lung disease who are acceptable candidates for the procedure. However, these candidates may be extremely ill and require ventilator and/or circulatory support as a bridge to transplantation, and lung transplantation recipients are at risk of numerous post-t...

In annular laser metal deposition (ALMD), Ti6Al4V alloy is sensitive to oxygen. this research, a coaxial double-layer shielding gas nozzle was used provide local inert atmosphere. The influence of the oxygen concentration in shield on cladding quality evaluated regarding appearance, chemical composition, microhardness, microstructure, and phase constituent. results show that surface discolorati...

The long spin coherence time and microelectronics compatibility of Si makes it an attractive material for realizing solid-state qubits. Unfortunately, the orbital (valley) degeneracy of the conduction band of bulk Si makes it difficult to isolate individual two-level spin-1/2 states, limiting their development. This degeneracy is lifted within Si quantum wells clad between Ge-Si alloy barrier l...

We present the results of the experimental study and comparison of Yb-free, Erdoped, all-fiber, alignment free, single frequency (SF) fiber amplifiers operating under 980-, 1470and 1530-nm pumping for the coreand clad-pumping architectures. In the single-mode core-pumped configuration Er-doped fiber amplifiers demonstrated 52% and 60% pump to output efficiencies for 980 and 1480 nm pump wavelen...

Highly birefringent (Hi-Bi) air-clad silica microfibers (MFs) with wavelength and sub-wavelength scale transverse dimensions are studied theoretically and experimentally. Hi-Bi MFs are taper-drawn from the standard SMF-28 single mode fibers that are "pre-processed" by "cutting away" parts of the silica cladding on opposite sides of the fiber with a femtosecond infrared laser. Such Hi-Bi MFs hav...

Objective. To evaluate the success rate of intra-rectal (IR) midazolam in combination with nitrous oxide/oxygen (N2O) sedation in young uncooperative dental patients when the local anesthesia is delivered by a computerized controlled local anesthetic delivery (C-CLAD). Study Design. This observational study consisted of 219 uncooperative children (age: 4.3 ± 1.69 y) who received IR midazolam (0...

Nanometer-scaled light sources using III–V compound semiconductor nanowires (NWs) on Si are expected as building blocks for next-generation photonics, bioimaging, on-chip microscopy, and detection ranging (LiDAR) techniques. This is, however, limited in a few materials systems due to complexity integration of the vertical NWs device process flow. Suppressing optical loss NW beyond diffraction r...

Introduction: Peripheral T-cell lymphomas (PTCL) are a rare and heterogeneous group of malignancies that share unifying feature epigenetic dysregulation. Recent evidence suggests PTCL, unlike other forms cancer or even lymphoma, exhibits marked vulnerability to hypomethylating agents (HMAs) alone especially in combination with HDAC inhibitors. HMAs like azacitidine (AZA) decitabine (DAC) have b...

This paper provides an overview of the commonly used processes and equipment for laser cladding, including pre-set powder feeding, simultaneous wire feeding coaxial cladding nozzles. By comparing above related nozzles, coating characteristics are summarized selection appropriate methods in different working environments. Meanwhile, morphology properties clad layers shaft parts processed with pr...

Laser clad coating’s susceptibility to cracking is extremely high due the brittleness of material itself and enormous residual stress caused by rapid heating cooling. In order relieve stress, a series Fe-based amorphous-Cu composite coatings were fabricated on 20 steel using laser processing. The effects copper addition phase composition microstructure evolution then investigated. as-prepared c...