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.
What is transoral robotic surgery (TORS)? Transoral robotic surgery (TORS) is a minimally invasive procedure that uses a combination of high-definition 3D magnification, robotic technology, and miniature instruments â the FDA-approved da VinciÂ® Surgical System â to enhance a head and neck surgeonâs skills when removing a benign tumor or cancerous tissue from a patientâs throat (pharynx or larynx).