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  2. Short-barreled rifle - Wikipedia

    en.wikipedia.org/wiki/Short-barreled_rifle

    Short-barreled rifle (SBR) is a legal designation in the United States, referring to a shoulder-fired, rifled firearm, made from a rifle, with a barrel length of less than 16 in (41 cm) or overall length of less than 26 in (66 cm), or a handgun fitted with a buttstock and a barrel of less than 16 inches length. In the United States, an SBR is ...

  3. Sequencing batch reactor - Wikipedia

    en.wikipedia.org/wiki/Sequencing_batch_reactor

    Conversion to SBR will create a longer sludge age, minimizing sludge handling requirements downstream of the SBR. [2]: 8–10 The reverse can also be done, in which SBR Systems would be converted into extended aeration (EA) systems. SBR treatment systems that cannot cope up with a sudden constant increase of influent may easily be converted ...

  4. 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. In 2012, more than 5.4 million tonnes of SBR were processed ...

  5. 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.

  6. SBR - Wikipedia

    en.wikipedia.org/wiki/SBR

    SBR Creative Media, advising radio stations; Specialised Bulk Rail, a subsidiary of SCT Logistics in Australia; Sportsbook Review, American sportsbook review website; Station biologique de Roscoff, French oceanography station; Stratford on Avon and Broadway Railway, England; Stone Brothers Racing, a former Australian motor racing team

  7. 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.

  8. Air transports of heads of state and government - Wikipedia

    en.wikipedia.org/wiki/Air_transports_of_heads_of...

    Air transports for heads of state and government are, in many countries, provided by the air force in specially equipped airliners or business jets.One such aircraft in particular has become part of popular culture: Air Force One, used by the President of the United States and operated by the United States Air Force.

  9. Visa requirements for Brazilian citizens - Wikipedia

    en.wikipedia.org/wiki/Visa_requirements_for...

    Visa requirements for Brazilian citizens are administrative entry restrictions by the authorities of other states placed on citizens of Brazil. As of 2025, Brazilian citizens have visa-free or visa on arrival access to 171 countries and territories, ranking the Brazilian passport 18th in the world according to the Henley Passport Index .