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Ida Jean Orlando (August 12, 1926 – November 28, 2007) was an American nurse whose theory has significant relevance for nursing in many countries worldwide. [1]Orlando graduated as a nurse from New York Medical College in 1947.
Margaret A. Newman (October 10, 1933 - December 18, 2018) was an American nurse, university professor and nursing theorist. She authored the theory of health as expanding consciousness, which was influenced by earlier theoretical work by Martha E. Rogers, one of her mentors from graduate school.
This coupling is measured by the relative linear growth- or decay rate κ of the amplitude of a given normal mode in one pulsation cycle (period). For the regular variables (Cepheids, RR Lyrae, etc.) numerical stellar modeling and linear stability analysis show that κ is at most of the order of a couple of percent for the relevant, excited ...
PSR B1919+21 is a pulsar with a period of 1.3373 seconds [4] and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell on 28 November 1967, it is the first discovered radio pulsar. [5]
Nursing theory is defined as "a creative and conscientious structuring of ideas that project a tentative, purposeful, and systematic view of phenomena". [1] Through systematic inquiry, whether in nursing research or practice, nurses are able to develop knowledge relevant to improving the care of patients.
The flow profiles was first derived by John R. Womersley (1907–1958) in his work with blood flow in arteries. [1] The cardiovascular system of chordate animals is a very good example where pulsatile flow is found, but pulsatile flow is also observed in engines and hydraulic systems , as a result of rotating mechanisms pumping the fluid.
Hildegard E. Peplau (September 1, 1909 – March 17, 1999) [1] was an American nurse and the first published nursing theorist since Florence Nightingale.She created the middle-range nursing theory of interpersonal relations, which helped to revolutionize the scholarly work of nurses.
Virginia Avenel Henderson (November 30, 1897 – March 19, 1996) was an American nurse, researcher, theorist, and writer. [1]Henderson is famous for a definition of nursing: "The unique function of the nurse is to assist the individual, sick or well, in the performance of those activities contributing to health or its recovery (or to peaceful death) that he would perform unaided if he had the ...