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www.reference.com/world-view/symbols-dental-chart-mean-c2ec2d1b0b9f5659

The symbols on a dental chart indicate what types of repairs a person has had performed on their teeth and what problems require treatment. Dentists usually differentiate prospective repairs from completed ones using two different colors, often blue and red. Which two colors the dentist uses, as wel

www.reference.com/article/can-keyboard-symbols-chart-online-f9d74cfdcfb40259

Keyboard symbols charts are available at Alt-Codes.net and Nouilles.info, as of 2015. Both websites feature charts that provide keyboard shortcuts and instructions for using special codes.

www.reference.com/article/computer-hazards-f0ef28cc6821d20

Computer hazards are issues that arise within the micro-architectures of a CPU that prevent it from executing the next pipe stage of a programmed instruction. CPU hazards can be further divided into three sub-categories: structural, data and control.

www.reference.com/article/chart-welding-symbols-show-8936c9d1bf9f6750

A chart of welding symbols shows a variety of welding symbols with their meanings, which are directions to the welder from the designer. Welding symbols indicate where a weld should be placed and include the correct diameter, length and other instructions.

www.reference.com/article/hazardous-materials-b9dd8b174fa92c83

Some common hazardous materials include corrosive substances, such as sodium hydroxide, vehicle batteries, fireplace cleaners and plating wastes, states EnviroStars. Others include ignitable liquids that can cause fires through spontaneous chemical changes and friction, including some dry cleaning c

www.reference.com/business-finance/physical-hazards-b51b89fa9ea7ffcd

Physical hazards are chemicals, substances and products that threaten the physical safety of a human being. Common types of physical hazards include fire, chemical reactions and explosions, according to Instructional Designs.

www.reference.com/article/common-hazardous-chemicals-15092f10560074da

Some common hazardous chemicals include ricin, perchloric acid and tetranitromethane. Ricin is a poison derived from castor beans and is a waste product left over from the production of castor oil. It causes injury if it is inhaled.

www.reference.com/article/signs-symbols-c6979b2663bc6b19

Signs and symbols are representations of information, usually without the usage of words. A sign is usually physical in nature and represents a command or a piece of pertinent information. A symbol usually represents an abstract entity by means of association or a general resemblance. Symbols are ty

www.reference.com/article/hazard-ratio-3639d8122679570f

Wiley Online Library defines the hazard ratio as the measurement used to determine the process of time to failure. The hazard ratio is a broad way of evaluating relative risk.

www.reference.com/business-finance/definition-mechanical-hazards-32d08e85395403e0

Mechanical hazards refer to moving machinery that can cause injury or death, according to Texas State University. OSHA explains that mechanical hazards occur in three basic areas: at the point where work is performed, in the power transmission apparatus and in other moving parts.