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Na

(chemistry)
sodium
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

na

(networking)
The country code for Namibia.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

numerical aperture

The measurement of the acceptance angle of an optical fiber, which is the maximum angle at which the core of the fiber will take in light that will be contained within the core. Taken from the fiber core axis (center of core), the measurement is the square root of the squared refractive index of the core minus the squared refractive index of the cladding. See critical angle and fiber optics glossary.


The Acceptance Angle
The numerical aperture measures the acceptance angle of a fiber.
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References in periodicals archive
Two of the fastest-growing job categories, according to the Bureau of Labor Statistics, are home care workers and nurse's aides. These occupations suffer from shortages because the pay is low and the working conditions often frustrating.
Creating an upscale service economy
A dresser, a closet, a bureau with a 13-inch color TV on top, and a small, gold-plated vanity with cracked glass where my mom hung her white nurse's aide outfit.
A journey home: in 1974, Lorenza Calpotura left the Philippines to work as a nurse's aide in the U.S. The remittances she sent back to her family began her son's journey to America. (To the Point)
A nurse's aide is "one who provides nursing or nursing-related services to residents but is not a licensed health professional" according to federal regulation 483.75.
Who's monitoring resident health?
Workers, particularly nurse's aides who provide the majority of direct care, suffer from low wages, lack of benefits, understaffing, inadequate training, and limited career opportunities.
Better-Paid Caregivers, Better Care
However, the agency must be licensed by the state, and employees must have nurse's aide certification.
Business opportunities: no place like home care
A key piece of evidence was a letter that 23 nurse's aides sent to Beverly Enterprises CEO David Banks, begging for increased staffing.
Jury hits nursing home conglomerate with large punitive verdict
Besides the already meager time allotment for home care, the nurse's aides themselves are poorly paid and are not provided health insurance as a job benefit.
A bedside view of Medicare
The court further rejected the patient's contention that sovereign immunity was not waived because the nurse's aide did "not use the intercom" in the patient's room to "call for assistance" from her supervisor to determine from a nurse if it would be appropriate to get her out of bed.
TX: Patient Sitting on Bed Falls - Aide Nearby: Bed is Not "Equipment" so as to Waive Immunity
It was a new program combining certified nurse's aide training and English-as-a-second-language instruction at Hawkeye Community College that helped Keric get a jump on her career.
College Program Builds an On-Ramp to Jobs for Immigrants
Allen retired in 1980 from Rutland State Hospital where she had worked for fifteen years as a nurse's aide. She had previously worked for five years as a nurse's aide at Worcester City Hospital.
Orphelena Allen, 92
Every new nurse, nurse's aide or physical therapy staff member is oriented on how to use the lift equipment on his/her first day of work.
Implementing a Zero-Lift Program
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