[Chemical Characteristics and Genetic Analysis of Karst Groundwater in the Beijing Xishan Area].

As an important water supply source in Beijing， karst groundwater has played an irreplaceable role in the security of urban water supply and ecological environment protection in the past 70 years. The Xishan karst groundwater system， located in the upper reaches of western Beijing， belongs to ecological conservation areas. There are several centralized water supply fields in this area.

The Prognostic Model Established by the Differential Expression Genes Based on CD8 T Cells to Evaluate the Prognosis and the Response to Immunotherapy in Osteosarcoma.

Osteosarcoma (OS) is a malignant tumor with an extremely poor prognosis, especially in progressive patients. Immunotherapy based on immune checkpoint inhibitors (ICIs) is considered to be a promising treatment option for OS. Due to tumor heterogeneity, only a minority of patients benefit from immunotherapy.

Low-Temperature Selective Catalytic Reduction DeNO and Regeneration of Mn-Cu Catalyst Supported by Activated Coke.

The activated coke is a promising support for catalysts, and it is important to study the performance of the activated coke catalyst on the removal of NOx. In the current research, a series of the activated coke-supported Mn-Cu catalysts are prepared by the incipient wetness impregnation method. The effects of the molar ration of Mn/Cu, the content of Mn-Cu, the calcination temperature, and reaction space velocity on NO conversion are investigated, and it was found that the 8 wt.

Experimental and DFT studies on oxygen release and migration mechanisms of LaAl-type perovskites as catalyst supports in biomass-to-H conversion.

Perovskites are potential candidates for catalyst supports in biomass gasification to produce high-purity H2 due to their excellent redox properties. However, the significant mechanism of lattice oxygen release and migration in perovskites has not been clearly understood. In this work, the characteristics of surface oxygen release and subsurface oxygen migration in various LaAl-type perovskites were investigated by experiments and density functional theory calculations.

Insight into the effect of facet-dependent surface and oxygen vacancies of CeO for Hg removal: From theoretical and experimental studies.

The reaction mechanisms of Hg oxidation on CeO(111) and (110) surface are clarified by a group of designed experiments and density functional theory (DFT) calculations. CeO nanorods and nanoparticles with exposure (110) and (111) faces were prepared by hydrothermal methods, and their morphological properties were investigated using XRD, XPS and HRTEM. Combined experimental and DFT results, the nanorods show better activity than nanoparticles.