Zobrazeno 1 - 10
of 239
pro vyhledávání: '"R. del Rey"'
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 79, Iss 5, Pp 1-12 (2019)
Abstract We explore the signals of axion-like particles (ALPs) in flavor-changing neutral current (FCNC) processes. The most general effective linear Lagrangian for ALP couplings to the electroweak bosonic sector is considered, and its contribution t
Externí odkaz:
https://doaj.org/article/f387804825f946069bad222ff5f104e3
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 78, Iss 11, Pp 1-21 (2018)
Abstract We consider an enlarged color sector which solves the strong CP problem via new massless fermions. The spontaneous breaking of a unified color group into QCD and another confining group provides a source of naturally large axion mass $$m_a$$
Externí odkaz:
https://doaj.org/article/4cf73c371f4c488fb9fb2c63eedc80be
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 77, Iss 8, Pp 1-40 (2017)
Abstract We study the leading effective interactions between the Standard Model fields and a generic singlet CP-odd (pseudo-) Goldstone boson. Two possible frameworks for electroweak symmetry breaking are considered: linear and non-linear. For the la
Externí odkaz:
https://doaj.org/article/8781a7fb8ca4412bbf478385ff83a740
Publikováno v:
Materiales de Construccion, Vol 67, Iss 328, Pp e139-e139 (2017)
This paper presents the design, construction, calibration and automation of a reverberation chamber for small samples. A balance has been sought between reducing sample size, to reduce the manufacturing costs of materials, and finding the appropriate
Externí odkaz:
https://doaj.org/article/beef322f6a854d5a944baad961f31786
Publikováno v:
Materiales de Construccion, Vol 63, Iss 312, Pp 569-580 (2013)
Acoustic absorbing materials are applied to reduce noise levels in a room. They are also used to adjust the reverberation time an acoustic enclosure to use for which it´s designed. There are multi-purpose rooms for conferences, concerts, cinemas, et
Externí odkaz:
https://doaj.org/article/f810b002b6014a15a7e77d2dd0689557
Publikováno v:
Materiales de Construccion, Vol 61, Iss 304, Pp 547-558 (2011)
In the building acoustics field usually fibrous materials are used as sound absorbing materials. Nowadays polyester fiber is one of the most used but the pure chip of polyester has a problem. Polyester is obtained of petroleum and its price was incre
Externí odkaz:
https://doaj.org/article/d4213745611d4c319274aa597fb423ce
Publikováno v:
Materiales de Construccion, Vol 60, Iss 299, Pp 133-143 (2010)
Acoustic Standards in the building are responsible for, companies and individuals, propose new acoustic materials for the sound isolation. This paper presents a new sound-absorbent material, it is based on natural fibres, particularly fibres of kenaf
Externí odkaz:
https://doaj.org/article/18a1b0c9d6d04b30b2ef61aa28c0b430
Publikováno v:
Materiales de Construccion, Vol 64, Iss 313, Pp e008-e008 (2014)
In the present paper, a methodology is proposed for obtaining empirical equations describing the sound absorption characteristics of an absorbing material obtained from natural fibers, specifically from coconut. The method, which was previously appli
Externí odkaz:
https://doaj.org/article/ac74d242d6fd42fcb49ce18585ce7f19
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Akademický článek
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