4. Chronic Venous Insufficiency (CVI) Veins are blood vessels that return blood to the heart. Chronic venous insufficiency (CVI) occurs when the blood vessels can't adequately pump blood back to the ...

Saudi Power Procurement Co. (SPPC) announced this week the shortlisted bidders for the final phase of the fifth round of the Saudi Arabian government's National Renewable Energy Program (NREP).

Veins are part of the circulatory system that moves blood through the body. Veins carry blood from the body back to the heart. The heart pumps the blood through the lungs so that it can pick up oxygen ...