Employers Covered Under the HCSO. An Employer is covered under the HCSO if it: 1  Is a for-profit business with 20 or more employees, or a non-profit business with 50 or more employees; and. 2  Has employees who work in San Francisco.
(November 2009). Thoracic outlet syndrome (TOS) is a syndrome involving compression at the thoracic inlet, which is known clinically as the superior thoracic outlet resulting from excess pressure placed on a neurovascular bundle passing between the anterior scalene and middle scalene muscles.horacic outlet syndrome (TOS) is a syndrome involving compression at the thoracic inlet, which is known clinically as the superior thoracic outlet resulting from excess pressure placed on a neurovascular bundle passing between the anterior scalene and middle scalene muscles.
The SOS distress signal is a continuous spaceless sequence of three dots, three dashes, and three dots. In International Morse Code, three dots form the letter S, and three dashes make the letter O, so SOS became an easy way to remember the order of the dots and dashes. In modern terminology, SOS is a Morse procedural signal or prosign, and the formal way to write it is with a bar above the letters: SOS.