Drainage source, distribution characteristics and risk assessment of bisphenol analogues in irrigation canal: a case study in hilly areas in South China.

Bisphenol analogues (BPs), the endocrine-disrupting compounds, have been detected in water, sediment, and even agricultural products. Irrigation is the main way for material migration, and it has been suggested as one of the sources of BPs. But the attention to irrigation water and sediment, and further to the ecological risks, is rare.

Effect of pressure on the thermoelectric performance of monolayer Janus MoSSe materials with different native vacancy defects.

The presence of vacancy defects in two-dimensional (2D) materials can substantially influence their thermoelectric performance. In this study, we employed first-principles methods combined with the non-equilibrium Green's functional formalisms (NEGF-DFT) to reveal the impact of pressure on the thermoelectric performance of monolayer Janus MoSSe without and with vacancy defects (V and V). The application of pressure can enhance the thermoelectric figure of merit () of a material without vacancy defects by significantly increasing the power factor (PF), and the can increase by nearly twice at room temperature (300 K).

Associations of physical activity intensity, frequency, duration, and volume with the incidence of sarcopenia in middle-aged and older adults: a 4-year longitudinal study in China.

Background: Physical activity (PA) plays an important role in the process of several chronic diseases. It may be also associated with the incidence of sarcopenia. This study aimed to determine the association of PA from different components including frequency, duration, intensity, and volume with the incidence of sarcopenia in middle-aged and older adults.

Study on the established customized limits for the daily quality assurance procedure.

Since there are no corresponding specification limits for some new daily quality assurance (QA) items in the TG-142, it is a compromise that the specification limits used in the monthly or annual QA procedures are used for the daily QA procedure in work. But there is no basis for whether this is feasible. The purpose of this article is to analyze QA results using SPC to determine the tolerance limits at our institution, and to present the usefulness of the analysis method using SPC.