Leptonic CP violating effective action for Dirac and Majorana neutrinos

In the Standard Model minimally extended to include massive neutrinos, we compute the leading CP-violating zero temperature contributions to the one-loop effective action induced by integration of the leptons. Such contributions start at operators of dimension six and they are P even for Dirac neutrinos and P even or odd for Majorana neutrinos. Dimension four operators are allowed in the mixed Dirac-Majorana case. It is verified by explicit calculation that CP can be violated in two generation settings for Majorana neutrinos. Using different neutrino scenarios we give upper bounds for the couplings of the CP-violating operators. As a rule, we find that lepton-induced couplings are suppressed as compared to quark-induced couplings, whenever the latter are allowed, nevertheless, through virtual lepton-number violating mechanisms, Majorana neutrinos induce new CP-violating operators not present in the quark or Dirac-neutrino cases.Comment: 47 pages, 4 figure

Incumplimientos por España de la Carta Social Europea : conclusiones XX-2 (2013) del Comité Europeo de Derechos Sociales

El Comité Europeo de Derechos Sociales publicó el 29 de enero de 2014 las Conclusiones correspon-dientes al año 2013 derivadas del control que realiza a los Estados que han ratificado la Carta Social Europea, originaria o revisada, mediante el procedimiento de Informes. Se trata de un mecanismo desconocido, al igual que la norma que lo origina y regula, obviando que la interpretación efectuada es jurisprudencia susceptible de ser invocada directamente en los órganos jurisdiccionales como consecuencia de la suscripción por los países de los Tratados internacionales, formando parte del ordenamiento jurídico interno (art. 96.1 de la CE). El presente trabajo se dedica al estudio de las Conclusiones que se acaban de dictar en relación a Es-paña, avanzando que su relevancia radica en todos y cada uno de los incumplimientos manifestados, pese a que el que más repercusión mediática ha tenido ha sido la no conformidad a la Carta Social Europea del RDL 16/2012, de 20 de abril, de medidas urgentes para garantizar la sostenibilidad del Sistema Nacional de Salud y mejorar la calidad y seguridad de sus prestaciones, en cuanto a la exclusión de los extranjeros en situación irregular de la asistencia sanitaria, que se analizará de forma separada por la peculiaridad que presenta su emisió

Determination of combustion gas temperatures by infrared radiometry in sooting and nonsooting flames

Flame temperatures in nonsooting and sooting environments were successfully measured by radiometry for pre-mixed propane-oxygen laminar flames stabilized on a water-cooled, porous sintered-bronze burner. The measured temperatures in the nonsooting flames were compared with fine-wire thermocouple measurements. The results show excellent agreement below 1700 K, and when the thermocouple measurements were corrected for radiation effects, the agreement was good for even higher temperatures. The benefits of radiometry are: (1) the flow is not disturbed by an intruding probe, (2) calibration is easily done using a blackbody source, and (3) measurements can be made even with soot present. The theory involved in the radiometry measurements and the energy balance calculations used to correct the thermocouple temperature measurements are discussed

Fuel-rich catalytic combustion of Jet-A fuel-equivalence ratios 5.0 to 8.0

Fuel-rich catalytic combustion (E.R. greater than 5.0) is a unique technique for preheating a hydrocarbon fuel to temperatures much higher than those obtained by conventional heat exchangers. In addition to producing very reactive molecules, the process upgrades the structure of the fuel by the formation of hydrogen and smaller hydrocarbons and produces a cleaner burning fuel by removing some of the fuel carbon from the soot formation chain. With fuel-rich catalytic combustion as the first stage of a two stage combustion system, enhanced fuel properties can be utilized by both high speed engines, where time for ignition and complete combustion is limited, and engines where emission of thermal NO sub x is critical. Two-stage combustion (rich-lean) has been shown to be effective for NO sub x reduction in stationary burners where residence times are long enough to burn-up the soot formed in the first stage. Such residence times are not available in aircraft engines. Thus, the soot-free nature of the present process is critical for high speed engines. The successful application of fuel-rich catalytic combustion to Jet-A, a multicomponent fuel used in gas turbine combustors, is discusssed

La discriminació de gènere en la normativa i jurispudència comunitària

Abstract not availabl

Obligaciones empresariales en materia de seguridad social y salud en las contratas y subcontratas de obras o servicios

Siendo que las contratas y subcontratas de obras y servicios se han convertido en la modalidad de descentralización productiva más utilizada en la actualidad, se erige como primordial la cuestión relativa a las obligaciones en materia de seguridad y salud de los distintos sujetos que intervienen en ellas. Las mismas aparecen enunciadas en el art. 24 de la Ley 31!1995, de Prevención de Riesgos Laborales, agrupándose bajo el título genérico de coordinación de actividades empresariales, y van encaminadas a que todos los empresarios se coordinen respecto de las medidas de prevención a adoptar cuando se comparte un mismo lugar de trabajo y que, en el caso de que se concierte una contrata o subcontrata, el empresario principal vigile además el cumplimiento de la normativa por parte de los contratistas.______________________________ Taking into account that building and service contracts and subcontracts habe become the most common mode of decentralisation used nowadays, the issue related to the obligation in health and safety matters for the individual has become of primary importance. These are found in section 24 act 31/1995, Prevention of Labour Risk, under the generic title of the coordination of business activities, the objective being that the contractors comply to the prevention measures to be adopted in a common workplace and in the case of a contract or subcontract being made, the principal contractor should check that these norms are fulfilled by the contractor