Judgment criteria of serum tIgE.

Judgment criteria of serum tIgE.</p

Tonsil and adenoid sizes of children in the case and the control groups.

Tonsil and adenoid sizes of children in the case and the control groups.</p

Rank-sum test results of the influencing factors of OSAHS severity in the case group.

Rank-sum test results of the influencing factors of OSAHS severity in the case group.</p

Multivariable logistic regression analysis of the influencing factors of pediatric OSAHS.

Multivariable logistic regression analysis of the influencing factors of pediatric OSAHS.</p

The correlation of different sizes of adenoids and tonsils with the severity of OSAHS in the pediatric patients with OSAHS in the case group.

The correlation of different sizes of adenoids and tonsils with the severity of OSAHS in the pediatric patients with OSAHS in the case group.</p

Results of paranasal sinus CT and electron-nasopharyngolaryngoscopy for typical cases with nasal stenosis.

Electron-nasopharyngolaryngoscopy indicated the presence of bilateral nasal mucosal hyperemia and swelling, middle and inferior turbinate hypertrophy, as well as aperture-like stenosis of the bilateral nasal cavities.</p

Comparison of baseline data of the pediatric patients between the case and the control groups.

Comparison of baseline data of the pediatric patients between the case and the control groups.</p

Analysis of the severity of OSAHS in obese and non-obese children in the case group.

Analysis of the severity of OSAHS in obese and non-obese children in the case group.</p

Tailoring Heteroatoms in Conjugated Microporous Polymers for Boosting Oxygen Electrochemical Reduction to Hydrogen Peroxide

Heteroatom-doped metal-free carbon materials have been considered as efficient catalysts for electrochemical H2O2 production via the two-electron oxygen reduction reaction (2e–-ORR). However, it is difficult to construct the precise heteroatom-doped carbon materials driving the 2e–-ORR process through the conventional pyrolytic method. Reported here is a diatomic hetero-cyclization strategy to construct efficient 2e–-ORR catalysts based on poly-benzimidazole, poly-benzoxazole, and poly-benzothiazole (PBXs, X = I, O, and T), which are composed of N-NH-, N-O-, or N-S-heterocycles, respectively. Poly-benzothiazole (PBT) with N, S-doped heterocyclic rings exhibit a higher H2O2 selectivity (95.6%) over corresponding undoped imine-based polymers (21.7%) and maintain remarkable electrochemical durability, which are among the highest values for PBXs as 2e–-ORR catalysts. A maximum H2O2 production rate of 3.13 mol gcatalyst–1 h–1 is obtained at a fixed current density of 100 mA cm–2. Moreover, a remarkable Faradaic efficiency (F.E.) of 96% as well as good catalyst stability maintained over 50 h of testing over the PBT catalyst in the three-phase flow cell is achieved. Density functional theory (DFT) calculations reveal that the atomic spin density distribution of the corresponding carbon active sites in PBXs contributes to the high electrochemical performance in the 2e–-ORR process. These results thus present that atomic-scale doping of sulfur atoms will strongly boost H2O2 production via affecting adjacent carbon atoms

Scalable Production of Two-Dimensional Metallic Transition Metal Dichalcogenide Nanosheet Powders Using NaCl Templates toward Electrocatalytic Applications

Two-dimensional (2D) metallic transition metal dichalcogenides (MTMDCs) have attracted tremendous interest due to their intriguing physical properties and broad application potential. However, batch production of high-quality 2D MTMDCs based on existing synthesis on 2D surfaces remains a huge challenge. Herein, a universal synthetic route for the scalable synthesis of high-quality 2D MTMDC (e.g., TaS2, V5S8, and NbS2) nanosheets using microcrystalline NaCl crystals as templates via a facile chemical vapor deposition method is reported. Obviously, this synthetic route is perfectly compatible with a facile water dissolution–filtration process for obtaining high-purity MTMDC nanosheet powders. Representatively, a thickness-uniform 1T-TaS2 nanosheet product can be achieved that shows unexceptionable dispersibility in ethanol, which allows its assembly onto arbitrary substrates/electrodes for high-performance energy-related applications, herein serving as a high-performance electrocatalyst for the hydrogen evolution reaction. This work sheds light on the batch production, green transfer, and energy-related application of 2D MTMDC materials