Cement is one of the many constituents of concrete, part of the glue that holds the other materials together. Concrete is made by mixing cement, supplementary cementitious materials, water, fine aggregate (sand), coarse aggregate (gravel or crushed stone) with or without admixtures, reinforcement, fibres or pigments.oncrete is easily and readily prepared and fabricated in all sorts of conceivable shapes and structural systems. Its great simplicity lies in the fact that its constituents are ubiquitous and are readily available almost anywhere in the world 1.
Debulking is the reduction of as much of the bulk (volume) of a tumour as possible. It is usually achieved by surgical removal. It is also known as cytoreduction or cytoreductive surgery (CRS); cytoreduction refers to reducing the number of tumor cells.
The incision traditionally used to perform heart surgery in which the sternum or breastbone is divided down the middle from top to bottom. Minimally invasive heart surgery. The term minimally invasive heart surgery is used to describe a variety of approaches that reduce the trauma of surgery and speed recovery. These approaches include keyhole surgery, and heart surgery without the use of a heart lung machine, and many other techniques.