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The Delta Dental Plans Association, also known as simply Delta Dental, is an American network of dental insurance companies composed of 39 independent Delta Dental members operating in all 50 states, the District of Columbia and Puerto Rico. These member companies provide coverage to 85 million people, enrolled in over 157,000 groups.
The principles of motion economy form a set of rules and suggestions to improve the manual work in manufacturing and reduce fatigue and unnecessary movements by the worker, which can lead to the reduction in the work related trauma.
Concerns regarding occupational stress in Japan have grown over the years, due to societal factors such as long working hours. [105] These concerns are being addressed through a number of national programs such as the government-mandated Stress Check Program, which requires all companies with more than 50 employees to assess the stress of its ...
Problems can begin as early on as dental school, with 79% of dental students at one undergraduate dental school in the UK reporting neck and/or back pain. [40] The problems arise from the nature of the job: focusing on fine procedures which require a close visual field and sustained posture for long periods of time. [ 41 ]
A repetitive strain injury (RSI) is an injury to part of the musculoskeletal or nervous system caused by repetitive use, vibrations, compression or long periods in a fixed position. [1] Other common names include repetitive stress injury , repetitive stress disorders , cumulative trauma disorders ( CTDs ), and overuse syndrome .
A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...
Inertia is the natural tendency of objects in motion to stay in motion and objects at rest to stay at rest, unless a force causes the velocity to change. It is one of the fundamental principles in classical physics, and described by Isaac Newton in his first law of motion (also known as The Principle of Inertia). [1]
This type of stress may be called (simple) normal stress or uniaxial stress; specifically, (uniaxial, simple, etc.) tensile stress. [13] If the load is compression on the bar, rather than stretching it, the analysis is the same except that the force F and the stress σ {\displaystyle \sigma } change sign, and the stress is called compressive ...