Reinforcing Coverage of Self-assembled Monomolecular Layers for Inverted Perovskite Solar Cells with Efficiency of 25.70 .

Self-assembled monolayers (SAM) as hole transport layers have been widely used in high-efficiency inverted perovskite solar cells (PSCs) exceeded 26 %. However, the poor coverage and non-uniform distribution on the substrate of SAM further restrict the improvement of device performance. Herein, we utilize the mixed SAM strategy via the MeO-2PACz along with perfluorotripropylamine (FC-3283) to improve the SAM coverage, aiming to accelerate the carrier transport, promote the perovskite growth, regulate the surface energy levels and suppress the nonradiative recombination.

Robotic Slide Tracheoplasty for Pediatric Tracheal Stenosis in Three-Dimensional Printed and Pig Trachea Models.

Purpose: Pediatric long-segment tracheal stenosis often requires operative repair with a slide tracheoplasty performed through median sternotomy. We hypothesized that this operation can be performed through a transcervical approach with use of a single-port robotic system.

Description: A transcervical single-port robotic slide tracheoplasty was performed in 2 models-a 3-dimensional (3D) printed pediatric tracheal stenosis model and a cadaveric pig trachea model.

Visible Light-Induced Divergent Deoxygenation/Hydroxymethylation of Pyridine -Oxides.

This study explores the deoxygenation of pyridine -oxides and presents a one-step photoredox method for the direct synthesis of 2-hydroxymethylated pyridines from pyridine -oxides. Mechanism studies elucidate the role of the catalyst and provide evidence of the possible electron transfer process and the formation of key radicals. A range of pyridine derivatives, particularly 2-hydroxymethyl-substituted pyridines, which may be difficult to obtain, can be synthesized in a single step.

Protective mechanism of safflower yellow injection on myocardial ischemia-reperfusion injury in rats by activating NLRP3 inflammasome.

Objectives: This study intended to explore whether the protective effect safflower yellow injection (SYI) on myocardial ischemia-reperfusion (I/R) injury in rats mediated of the NLRP3 inflammasome signaling.

Methods: The I/R model was prepared by ligating the left anterior descending coronary artery for 45 min and then releasing the blood flow for 150 min. 96 male Wistar rats were randomly divided into sham group, I/R group, Hebeishuang group (HBS), SYI high-dose group (I/R + SYI-H), SYI medium-dose group (I/R + SYI-M) and SYI low-dose group (I/R + SYI-L).

An Electroglottographic and Acoustic Study on Mandarin Speech in Male Heroin Users.

Drug abuse can cause severe damage to the human speech organs. The vocal folds are one of the important speech organs that produce voice through vibration when airflow passes through. Previous studies have reported the negative effects of drugs on speech organs, including the vocal folds, but there is still limited research on relevant field.