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  2. Styrene-butadiene - Wikipedia

    en.wikipedia.org/wiki/Styrene-butadiene

    Styrene-butadiene or styrene-butadiene rubber (SBR) describe families of synthetic rubbers derived from styrene and butadiene (the version developed by Goodyear is called Neolite [1]). These materials have good abrasion resistance and good aging stability when protected by additives.

  3. Signal-to-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-noise_ratio

    One definition of signal-to-noise ratio is the ratio of the power of a signal (meaningful input) to the power of background noise (meaningless or unwanted input): =, where P is average power.

  4. Structure–activity relationship - Wikipedia

    en.wikipedia.org/wiki/Structure–activity...

    The concept of structure biodegradability relationships (SBR) has been applied to explain variability in persistence among organic chemicals in the environment. Early attempts generally consisted of examining the degradation of a homologous series of structurally related compounds under identical conditions with a complex "universal" inoculum ...

  5. Shooting and bouncing rays - Wikipedia

    en.wikipedia.org/wiki/Shooting_and_bouncing_rays

    The shooting and bouncing rays (SBR) method in computational electromagnetics was first developed for computation of radar cross section (RCS). [1] Since then, the method has been generalized to be used also for installed antenna performance. The SBR method is an approximate method applied to high frequencies.

  6. Stolen base percentage - Wikipedia

    en.wikipedia.org/wiki/Stolen_base_percentage

    Stolen base percentage is a statistic used in baseball.. A player's stolen base percentage (a.k.a. SB%) measures his rate of success in stealing bases. Because stolen bases tend to help a team less than times caught stealing hurt, a player needs to have a high stolen base percentage in order to contribute much value to his team.

  7. Flory–Fox equation - Wikipedia

    en.wikipedia.org/wiki/Flory–Fox_equation

    The Flory–Fox equation relates the number-average molecular weight, M n, to the glass transition temperature, T g, as shown below: =, where T g,∞ is the maximum glass transition temperature that can be achieved at a theoretical infinite molecular weight and K is an empirical parameter that is related to the free volume present in the polymer sample.

  8. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    According to the New York Times, here's exactly how to play Strands: Find theme words to fill the board. Theme words stay highlighted in blue when found.

  9. Spectral band replication - Wikipedia

    en.wikipedia.org/wiki/Spectral_band_replication

    The SBR idea is based on the principle that the psychoacoustic part of the human brain tends to analyse higher frequencies with less accuracy; thus harmonic phenomena associated with the spectral band replication process needs only be accurate in a perceptual sense and not technically or mathematically exact.