Anti-adhesive and antibacterial chitosan/PEO nanofiber dressings with high breathability for promoting wound healing.

Wound dressings are crucial for wound healing. Ideal wound dressings should possess many functions such as wettability, antibacterial activity and anti-adherent property to promote wound healing. In the present study solution blown spinning (SBS) technology was applied to prepare chitosan/polyethylene oxide (CS/PEO) nanofiber dressings in high efficiency.

Computational Design of Ni@PtM Clusters for Multifunctional Electrocatalysts.

High-efficiency and low-cost multifunctional electrocatalysts for hydrogen evolution reaction (HERs), oxygen evolution reaction (OERs) and oxygen reduction reaction (ORRs) are important for the practical applications of regenerative fuel cells. The activity trends of core-shell Ni@M and Ni@Pt1M31 (M = Pt, Pd, Cu, Ag, Au) were investigated using the density functional theory (DFT). Rate constant calculations indicated that Ni@PtAg was an efficient HER catalyst.

Facile fabrication of 3D hollow porous aminopyridine rings decorated polymeric carbon nitride for enhanced photocatalytic hydrogen evolution and dye elimination.

In consideration of energy shortages and environmental pollution, there is a critical need to develop a photocatalyst with high catalytic performance for rapid hydrogen production and efficient pollutant degradation. We synthesized a photocatalytic composite catalyst with three-dimensional (3D) porous aminopyridine rings grafted on the edge of g-CN (APCN) using melamine, cyanuric acid and 4-aminopyridine as raw materials. The composite catalyst exhibited excellent photocatalytic performance for H production (2.

Updated Pharmacological Effects of Total Phenolic Acid on the Meningeal Microcirculation in Mice.

Objective: To investigate the effects of total phenolic acid on meningeal microcirculation in mice.

Methods: A total of 84 healthy mice were randomly divided into the blank group, the model group, the positive control Western medicine group, the positive control Chinese medicine group, and the large, medium, and small doses of the total phenolic acid group, with 12 rats in each group. The corresponding drug was given to the group once a day for one week, and the litter was changed at 9 : 00 on the 6th day, and the water fasted.

Effect of total phenolic acids on focal cerebral ischemia reperfusion injury rats model.

Objective: Explore the possible protective effect of total phenolic acids on cerebral ischemia reperfusion injury rats.

Methods: Focal cerebral ischemia reperfusion rats model were established by linear thrombus. Nimodipine group, Naoluotong group, the high, middle and low dose of total phenolic acids groups were given related drugs via intragastric administration before operation for seven days, once a day.

Pollution levels of banned and non-banned pesticides in surface sediments from the East China Sea.

In this paper, 65 pesticides, including banned ones of DDTs, etc. and non-banned ones of iprobenfos, etc. have been detected in 31 surface sediment samples from the East China Sea (ECS) to study their pollution levels, sources, and risks.

Distribution, composition, and ecological risk of surface sedimental polychlorinated naphthalenes in the East China Sea.

To reveal the pollution levels and estimate the ecological risks of polychlorinated naphthalenes (PCNs) in the East China Sea (ECS), seventy-five surface sediment samples were collected and analyzed by high-resolution mass spectrometry. PCN contents ranged from below detection limit to 261.71 ng/g dry weight (d.

Pollution levels of DDTs and their spatiotemporal trend from sediment records in the Southern Yellow Sea, China.

In order to study the pollution levels and spatiotemporal trend of Dichlorodiphenyltrichloroethanes (DDTs) in the Southern Yellow Sea (SYS), thirty-two surface sediment samples and a sediment core have been analyzed, and our results have been compared with previous reports. DDTs contents in our samples ranged from below detection limit to 5.1ng/gdry weight (d.