[Effects of Biological and Enzymatic Ageing on the Surface Properties of Mg-modified Biochar].

The excellent surface properties of Mg-modified biochar have highlighted a broad application prospect for soil heavy metal mitigation. However, the soil biotic aging process can have an impact on the physical and chemical properties of biochar as well as the heavy metal removal performance. Therefore, MgCl-modified biochar was subjected to a six-month microbial and enzymatically aged test to explore the effects of different biotic aging processes on the physical and chemical properties.

[Comparison of Pb Adsorption Properties of Biochars Modified Through CO Atmosphere Pyrolysis and Nitric Acid].

Acid modification has been widely used to modify the structural properties of biochars. However, acid modification led to the large consumption of acid, increased difficulty of waste effluent disposal, and a high application cost. To evaluate the advantages and application potential of biochars prepared under CO, utilizing pyrolysis to directly modify biochars to improve heavy metal removal efficiency and reduce production cost, would be an important prerequisite for the broad application of biochars.

[Precise-surgical-opening intramedullary nail insertion in treating unstable femoral intertrochanteric fractures with closed-reposition difficulty].

Objective: To compare clinical efficacy of repositioning with precise-surgical-opening intramedullary nail insertion and traditional repositioning in treating unstable femoral intertrochanteric fractures with closed-reposition difficulty.

Methods: Clinical data of 58 patients with unstable femoral intertrochanteric fractures after closed-reposition difficulty (AO 31A2.2-3.