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  2. Hamilton County, Indiana school board election results: Will ...

    www.aol.com/hamilton-county-indiana-school-board...

    Here are the election results for Indiana school board elections in Carmel, Fishers and Noblesville.

  3. Live Ohio election results: School board seats in Forest ...

    www.aol.com/live-ohio-election-results-school...

    Here's who won the most high-profile school board seats in the suburbs of Greater Cincinnati.

  4. Clarksville-Montgomery County school board election results ...

    www.aol.com/clarksville-montgomery-county-school...

    Election night results show that Republicans dominated the winning seats on the Clarksville-Montgomery County School Board. Republican Kacie Bryant won with 1,311 votes, drawing the highest vote ...

  5. Noise control - Wikipedia

    en.wikipedia.org/wiki/Noise_control

    If noise levels exceed 115 dBA, miners are required to wear hearing protection. MSHA, therefore, requires that noise levels be reduced below 115 dB TWA. Measuring noise levels for noise control decision making must integrate all noises from 90 dBA to 140 dBA. [5] [4]

  6. Control arm - Wikipedia

    en.wikipedia.org/wiki/Control_arm

    The inboard (chassis) end of a control arm is attached by a single pivot, usually a rubber bushing. It can thus control the position of the outboard end in only a single degree of freedom, maintaining the radial distance from the inboard mount. Although not deliberately free to move, the single bushing does not control the arm from moving back ...

  7. Sound reduction index - Wikipedia

    en.wikipedia.org/wiki/Sound_Reduction_Index

    The Sound Reduction Index is expressed in decibels (dB). It is the weighted sound reduction index for a partition or single component only. This is a laboratory-only measurement, which uses knowledge of the relative sizes of the rooms in the test suite, and the reverberation time in the receiving room, and the known level of noise which can pass between the rooms in the suite by other routes ...

  8. Here are the winners of suburban Milwaukee school board ...

    www.aol.com/winners-suburban-milwaukee-school...

    The top two winners in the primary for the Shorewood School Board — Ellen Eckman and Andrew Frey — will advance to the general election April 2. The April winner will serve a three-year term ...

  9. Ambient noise level - Wikipedia

    en.wikipedia.org/wiki/Ambient_noise_level

    Ambient noise level is measured with a sound level meter. [4] It is usually measured in dB relative to a reference pressure of 0.00002 Pa, i.e., 20 μPa (micropascals) in SI units. [5] This is because 20 μPa is the faintest sound the human ear can detect. [5] A pascal is a newton per square meter. The centimeter-gram-second system of units ...