Diammonium Porphyrin-Induced CsPbBr Nanocrystals to Stabilize Perovskite Films for Efficient and Stable Solar Cells.

Employing all-inorganic perovskite quantum dots (QDs) to treat organic-inorganic perovskite films has been well documented as a serviceable tactic to improve the performance of perovskite solar cells (PSCs). However, the inert molecule-coated QDs with zero-dimensional (0D) structure would limit further enhancement of the efficiency and stability of PSCs. Here, we employ a conductive diammonium porphyrin (ZnPy-NHBr) to treat CsPbBr QDs coated on a three-dimensional perovskite film, thus constructing a stable 0D-two-dimensional perovskite capping layer.

Performance of Cu-cathode/Fe/peroxymonosulfate process on iohexol degradation.

Copper was used as a non-inert cathode material in a Cathode/Fe/peroxymonosulfate(PMS) system, and the performance of this novel Cu-cathode/Fe/PMS system was tested with a typical iodinated X-ray contrast media (iohexol) as target organics. The reaction mechanisms and the iohexol degradation pathways were investigated. The operational conditions of Cu-cathode/Fe/PMS process on iohexol degradation were optimized to be 1.

Solvent-based separation and recycling of waste plastics: A review.

Since the creation of first man-made plastic, the global production and consumption of plastics have been continuously increasing. However, because plastic materials are durable and very slow to degrade, they become waste with high staying power. The over-consumption, disposal, and littering of plastics result in pollution, thus causing serious environmental consequences.

Laboratory simulations of the mixed solvent extraction recovery of dominate polymers in electronic waste.

The recovery of four dominant plastics from electronic waste (e-waste) using mixed solvent extraction was studied. The target plastics included polycarbonate (PC), polystyrene (PS), acrylonitrile butadiene styrene (ABS), and styrene acrylonitrile (SAN). The extraction procedure for multi-polymers at room temperature yielded PC, PS, ABS, and SAN in acceptable recovery rates (64%, 86%, 127%, and 143%, respectively, where recovery rate is defined as the mass ratio of the recovered plastic to the added standard polymer).

Inhibitory effect of miR-145 on RPE cell proliferation.

Objective: This study aims to explore the impact of micro RNA miR-145 on retinal pigment epithelial cell proliferation and apoptosis.

Methods: A stable culture and passage system of hPNE cells was first established, and its migration ability was determined. Then, miR-145 lentiviral vectors were constructed to transfect hPRE cells.

[Design and application of medical knowledge model on SAGE].

As an methodology for promoting the quality and efficiency of health care, clinical decision support systems (CDSSs) have gained much improvement. The knowledge base (KB) plays an important role in DSS. For CDSSs, the construction of KB means modeling the medical knowledge based on a suitable model.