Carbocations are species bearing a formal + charge on carbon. The have sp2 hybridization and trigonal planar geometry, with an empty p orbital on carbon, perpendicular to the plane containing the substituents (see diagrams shown to the right).
Aortic cross-clamp. An aortic cross-clamp is a surgical instrument used in cardiac surgery to clamp the aorta and separate the systemic circulation from the outflow of the heart. An aortic cross-clamping procedure serves, for example, in the repairing of coarctation of the aorta.
Overview. Cross Laminated Timber (CLT) is the engineered wood of the future and is making the construction of entire buildings from timber a reality.ross Laminated Timber (CLT) is an engineered wood product used for pre-fabricated structural applications and is making the construction of entire buildings from timber a reality. 1  Overview. 2  Properties. 3  Description. 4  Applications. 5  Case Studies. 6  Suppliers.