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2. Diving chamber - Wikipedia

   en.wikipedia.org/wiki/Diving_chamber

   A diving chamber is a vessel for human occupation, which may have an entrance that can be sealed to hold an internal pressure significantly higher than ambient pressure, a pressurised gas system to control the internal pressure, and a supply of breathing gas for the occupants. [1] There are two main functions for diving chambers:

3. Ventilation (firefighting) - Wikipedia

   en.wikipedia.org/wiki/Ventilation_(firefighting)

   The method of negative pressure ventilation is a process of using smoke ejectors to remove the smoke from a building. [3] Negative pressure ventilation is not used as much as positive pressure ventilation for the reason that positive pressure can move more air throughout the structure and clear out more smoke in a timely manner.

4. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   Pressure-Demand: Similar to demand, but with a spring in the diaphragm, which holds the admission valve open, for continuous air flow to the facepiece. NIOSH emphasizes that facepieces between both SCBA types cannot be interchanged, but certain SCBAs can be switched to both 'demand' and 'pressure-demand' operation.

5. Air-start system - Wikipedia

   en.wikipedia.org/wiki/Air-start_system

   A direct start system as used on a marine slow-speed diesel is required to have up to 12 starts on a non-reversing engine or 6 starts on a reversible, or geared, engine. When starting the engine, compressed air is admitted to whichever cylinder has a piston just over top dead center , forcing it downward. [ 2 ]

6. Fire pump - Wikipedia

   en.wikipedia.org/wiki/Fire_pump

   A jockey pump is sized for a flow less than one sprinkler in order to ensure a system pressure drop significant enough to start the main fire pump. Jockey pumps are typically small multistage centrifugal pumps, and do not have to be listed or certified for fire system application. The control equipment for jockey pumps may however carry approvals.

7. 'He's stubborn': Jimmy Carter's grandson says he's 'not that ...

   www.aol.com/news/hes-stubborn-jimmy-carters...

   I mean, he’s never given up on anything in his life and he’s not going to start now.” More: Cancer spread to Jimmy Carter's brain 9 years ago. Here's how he's lived so long.

8. Underground mine ventilation - Wikipedia

   en.wikipedia.org/wiki/Underground_mine_ventilation

   An auxiliary ventilation system takes air from the flow-through system and distributes it to the mine workings via temporarily mounted ventilation fans, Venturi tubes and disposable fabric or steel ducting. Auxiliary fan and duct systems may be either forcing systems, where fresh air is pushed into mine headings, or exhausting systems that draw ...

9. Ree's Million Dollar Spaghetti Lives Up to Its Name

   www.aol.com/rees-million-dollar-spaghetti-lives...

   marinara sauce (about 4 c.) Cheese Layer. 1 (8-oz.) package cream cheese, at room temperature. 2 c. low-fat cottage cheese, at room temperature. 1/2 c. freshly grated parmesan cheese (about 2 oz.)