Mechanocatalytic Synthesis of Ammonia by Titanium Dioxide with Bridge-Oxygen Vacancies: Investigating Mechanism from the Experimental and First-Principle Approach.

Mechanochemical ammonia (NH) synthesis is an emerging mild approach derived from nitrogen (N) gas and hydrogen (H) source. The gas-liquid phase mechanochemical process utilizes water (HO), rather than conventional hydrogen (H) gas, as H sources, thus avoiding carbon dioxide (CO) emission during H production. However, ammonia yield is relatively low to meet practical demand due to huge energy barriers of N activation and HO dissociation.

Preventive effect and mechanism of compound Danshen dripping pills on contrast-induced nephropathy after percutaneous coronary interventional.

Background: Contrast-induced nephropathy (CIN) is one of the most common complications after coronary stent implantation due to the extensive development of coronary catheterization technology. Compound Danshen dripping pills (CDDP) are clinically used as cardiovascular drugs, relieving systemic inflammatory response. Previous studies have observed that CDDP can decrease CIN incidence after coronary stent implantation with uncertain effectiveness.

Geometric-feature-based approach to human face reconstruction with high measurement speed.

This paper presents a method based on geometry for three-dimensional (3D) face reconstruction without the need for additional images, hardware components, or objects. In our proposed method, we consider part of the nose as the feature region because its shape remains almost constant during the measurement. The geometry of this region was used to provide cues for phase unwrapping.