1 Volunteering with organizations is a way for communication officers to get experience in the field. 2  For example, many non-profits will have programs or events that they would like to be publicized. 3  Students can join a committee that focuses on publicity to gain experience. 4  Practice social media.
Ventilation perfusion coupling is the amount of gas reaching  alveoli & blood flow in pulmonary capillaries; local  autoregulation.10 people found this useful.Edit. coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. Couplings do not normally allow disconnection of shafts during â¦ operation, however there are torque limiting couplings which can slip or disconnect when some torque limit is exceeded.
A lung ventilation/perfusion scan, or VQ scan, is a test that measures air and blood flow in your lungs.A VQ scan most often is used to help diagnose or rule out a pulmonary embolism (PULL-mun-ary EM-bo-lizm), or PE. VQ scan involves two types of scans: ventilation and perfusion. The ventilation scan shows where air flows in your lungs. The perfusion scan shows where blood flows in your lungs. Both scans use radioisotopes (a low-risk radioactive substance).