AgPO/NiO Composites with Enhanced Photocatalytic Activity under Visible Light.

Black NiO powders were prepared by a hydrothermal method. Moreover, the visible light-driven AgPO/NiO photocatalyst composites were successfully synthesized by in situ precipitation method. These samples were structurally characterized by X-ray diffraction and Rietveld refinement.

Ultrasound-guided central venous puncture in an obese patient with cervical adenomegaly.

Background And Objectives: Classical central venous techniques are based on superficial anatomical references and the knowledge of the vascular anatomy of the area to be punctured. The ultrasound allows direct vision of vascular and perivascular structures, and the needle during the procedure. The objective of this report was to describe an ultrasound-guided central venous catheter placement in an obese patient with adenomegaly.