Assessment of soil erosion in the Dongting Lake Basin, China: Patterns, drivers, and implications.

Soil loss caused by erosion is a global problem. Therefore, the assessment of soil erosion and the its driving mechanism are of great significance to soil conservation. However, soil erosion is affected by both climate change and human activities, which have not been quantified, and few researchers studied the differences in the driving mechanisms of soil erosion depending on the land use type.

Current research in perineural invasion of cholangiocarcinoma.

Background: Perineural invasion is a common path for cholangiocarcinoma (CCA) metastasis, and it is highly correlated with postoperative recurrence and poor prognosis. It is often an early event in a disease that is commonly diagnosed in advanced stages, and thus it could offer a timely therapeutic and diagnostic target if better understood. This article systematically reviews the progress of CCA neural invasion-related molecules.

Promotion of organic reactions by interfacial hydrogen bonds on hydroxyl group rich nano-solids.

Surface hydroxyl group rich nano-structured solids dramatically increase the rate of several organic reactions; such effect is attributed to the formation of interfacial hydrogen bonds between the surface hydroxyl groups and the reactants; this catalytic effect is versatile and applicable for a broad range of reaction conditions.

Syringe pump-assisted synthesis of water-soluble cubic structure Ag2Se nanocrystals by a cation-exchange reaction.

Water-soluble cubic structure Ag(2)Se (alpha-Ag(2)Se) nanocrystals smaller than 5 nm can be obtained by cation-exchange reaction at room temperature, using water-dispersed ZnSe nanocrystals as precursors, which is achieved by controlling the injection speed of AgNO(3) solutions via a syringe pump in the presence of the stabilizer of trisodium citrate. Meanwhile, the thermal stability of the product Ag(2)Se nanocrystals is studied. The results show that the mean sizes and shapes of the precursor ZnSe and product Ag(2)Se nanocrystals are similar, and Se anion sublattices between them are topotaxial.

Low-dose dopamine reduces inflammatory factors of acute pancreatitis in rats.

Background: Acute pancreatitis, especially acute necrotizing pancreatitis (ANP), is a serious disease with a high morbidity because of multiorgan dysfunction. Recent studies have indicated that during the pathogenesis of ANP, changes of the microcirculation play an important role in the worsening of the disease. This study based on a model of acute pancreatitis in Wistar rats was to determine the effect of treatment with low-dose dopamine on acute pancreatitis by the dynamic measurement of serum levels of inflammatory factors IL-6 and TNF-alpha.