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In mechanics, a diaphragm is a sheet of a semi-flexible material anchored at its periphery and most often round in shape. It serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other depending on differences in pressure, or as a device that vibrates when certain frequencies are applied to it.
On the other hand, rigid diaphragms transfer load to frames or shear walls depending on their flexibility and their location in the structure. Diaphragms that cannot be classified as either flexible or rigid are referred to as semirigid. [1] The flexibility of a diaphragm affects the distribution of lateral forces to the vertical components of ...
Diaphragm valves (or membrane valves) consists of a valve body with two or more ports, a flexible diaphragm, and a "weir or saddle" or seat upon which the diaphragm closes the valve. The valve body may be constructed from plastic , metal or other materials depending on the intended use.
The basic working principle of an air-operated double diaphragm pump. Cross-section sketch of diaphragm fuel pump Air-operated double diaphragm pump. A diaphragm pump (also known as a Membrane pump) is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable valves on either side of the diaphragm (check valve ...
During her time abroad, Sanger also saw a more flexible diaphragm in a Dutch clinic, which she thought was a better form of contraceptive. [160] Once Sanger returned to the United States, she established a short-lived birth-control clinic with the help of her sister, Ethel Bryne, based in the Brownville section of Brooklyn , New York [ 162 ] in ...
Diaphragm (birth control), a small rubber dome placed in the vagina to wall off the cervix, thus preventing sperm from entering; Diaphragm (mechanical device), a sheet of a semi-flexible material anchored at its periphery; Diaphragm (structural system), a structural engineering system used to resist lateral loads
A diaphragm that is too large will place pressure on the urethra, preventing the bladder from emptying completely and increasing the risk of urinary tract infection. [11] A diaphragm that is too large may also cause a sore to develop on the vaginal wall. [37] Diaphragms should be re-fitted after a weight change of 4.5 kg (10 lb) or more. [12]
Diaphragmatic breathing, paradoxical movement of the diaphragm outwards during inspiration; Intercostal indrawing; Decreased chest–chest movement on the affected side; An increased jugular venous pressure, indicating possible right heart failure [5] The anterior and posterior chest wall are also inspected for any abnormalities, which may include: