Preparation of Low Volatile Organic Compounds Silver Paste Containing Ternary Conductive Fillers and Optimization of Their Performances.

Conductive silver paste is a key material in the fields of printed circuits and printed electronic devices. However, the preparation of conductive silver paste with low-cost and volatile organic compounds (VOCs) is still a challenge. In this work, conductive silver pastes with excellent comprehensive performances were developed by using water-borne polyurethane (WPU) as the bonding phase and using the ternary mixture of Ag microflakes (Ag MFs), Ag nanowires (Ag NWs), and Ag nanoparticles (Ag NPs) as the conductive phase.

Oleanolic acid-loaded nanoparticles attenuate activation of hepatic stellate cells via suppressing TGF-β1 and oxidative stress in PM2.5-exposed hepatocytes.

Liver fibrosis has the potential to progress into liver cirrhosis, liver failure, and even death. Hepatic stellate cells (HSCs) activation play a central role in liver fibrosis, and persistently damaged hepatocytes secrete soluble factors that activate transdifferentiation of HSCs into myofibroblasts. Our previous studies indicated that fine particulate matter (PM2.

PM2.5-exposed hepatocytes induce hepatic stellate cells activation by releasing TGF-β1.

The interaction between various types of hepatic cells is related to liver fibrosis. Recent studies demonstrated that fine particulate matter (PM2.5) exposure is an important risk factor for the occurrence of liver fibrosis, but its molecular mechanism is still obscure.

Prevalence and risk factors associated with prehypertension in Shunde District, southern China.

Objective: To explore the prevalence and combined cardiovascular risk factors of prehypertension in southern China.

Design: A retrospective study; the logistic regression model was used to find the risk factors of prehypertension.

Setting: The study was conducted in Shunde District, southern China, using the community-based health check-up information.