Article
Mass hierarchy, mass gap and corrections to Newton's law on thick branes with Poincare symmetry
Fecha
2008Autor
Hernandez-Becerril, D.U.
Ceballos-Corona, J.G.A.
Esqueda-Lara, K.
Tovar-Salazar, M.A.
Leon-Alvarez, D.
Institución
Resumen
Despite a recent revision of the dinoflagellates of the order Dinophysiales on Mexican coasts and a checklist of dinoflagellates from the Mexican Pacific, many records still need to be confirmed, for there are very few reliable illustrations and/or descriptions. In this paper, species composition and distribution of dinoflagellates belonging to the Dinophysiales, the product of the analysis of net phytoplankton material collected from coasts of the tropical Mexican Pacific (Jalisco to Chiapas) are presented. The material has been studied using light microscopy, although a few species were also studied by scanning electron microscopy (SEM). Forty-one species from five genera were identified, with two new records annotated for the Mexican Pacific: Amphisolenia thrinax and Metaphalacroma skogsbergii, and two new species of the genus Amphisolenia, Amphisolenia fusiformis sp. nov. and Amphisolenia michoacana sp. nov. Illustrations, dimensions and distribution data are provided for each species, and descriptions of the new species are also given. Amphisolenia palmata, A. rectangulata, A. truncata, Dinophysis apicata, D. hindmarchii, Histioneis biremis, H. crateriformis, H. pulchra, Ornithocercus cristatus, O. heteroporoides and O. orbiculatus are illustrated for the first time in the waters of the Mexican Pacific. The number of species found in this study is relatively low. The species Dinophysis norvegica and D. sacculus, reported in previous papers, do not seem to occur in Mexican waters, as their distribution is rather limited to the Mediterranean Sea and the North Atlantic, respectively. Finally, the identity of certain species of Dinophysis and the nature of the new species described here are discussed. " 2008 Marine Biological Association in the United Kingdom.",,,,,,"10.1017/S0025315408000143",,,"http://hdl.handle.net/20.500.12104/42677","http://www.scopus.com/inward/record.url?eid=2-s2.0-43049114232&partnerID=40&md5=daa030148a0a70c3a1cfc270d3fe2ea0",,,,,,"1",,"Journal of the Marine Biological Association of the United Kingdom",,"1 15",,"88",,"Scopus WOS",,,,,,"Dinoflagellates; Dinophysiales; Mexican Pacific; New species; Phytoplankton",,,,,,"Marine planktonic dinoflagellates of the order Dinophysiales (Dinophyta) from coasts of the tropical Mexican Pacific, including two new species of the genus Amphisolenia",,"Article"
"38846","123456789/35008",,"Lizama Silva, Gladys Universidad de Guadalajara",,"Lizama Silva, Gladys Universidad de Guadalajara",,"2004",,,,,,,,,,"0185-3929","http://hdl.handle.net/20.500.12104/37067",,,"Español",,,,"97",,"Estudios de historia y sociedad",,"287-292",,,,"CLASE",,,,,,,,"Historia económica",,,"Valerio Ulloa, Sergio. Los empresarios extranjeros en Guadalajara durante el porfiriato, México","Valerio Ulloa, Sergio. Los empresarios extranjeros en Guadalajara durante el porfiriato, México: Universidad de Guadalajara, 2002, 165p.",,"journalArticle"
"38837","123456789/35008","Tetreault, Darcy Universidad de Guadalajara",,"Tetreault, Darcy Universidad de Guadalajara",,"2004",,,,,,,,,,"1665-0565",,"http://hdl.handle.net/20.500.12104/37058",,"Español",,,,"29",,"Espiral. Estudios sobre estado y sociedad",,"45-77",,"10",,"CLASE",,,,,,,,"Desarrollo económico",,"Una taxonomía de modelos de desarrollo sustentable",,,,"journalArticle",
"38867","123456789/35008",,"Gonzalez-Perez,Guillermo J. Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Mexico. ggonzal@ cencar.udg.mx",,"González-Pérez, G.J. Vega-López, M.G. Romero-Valle, S. Vega-López, A. Cabrera-Pivaral, C.E.",,"2008",,"OBJECTIVE: Determining the relationship between social exclusion and health inequity at state and municipal level in Mexico during recent years. METHODS: Adjusted mortality rates were calculated for 2005 (related to transmissible illnesses in childhood, pregnancy, childbirth and being produced by causes considered potentially avoidable); rates were calculated by states, for states grouped in quartiles according to marginalization level and for municipalities grouped according to degree of marginalization. Indicators such as rate ratio, Gini coefficient and the inequities in health index (IHI) were used for measuring such inequity. RESULTS: A clear excess of mortality was observed in the states grouped in the 4th quartile (highest marginalization) in relationship to the 1st quartile (lowest marginalization); conversely, resources and health services in the 1st quartile were evidently higher than those in the 4th quartile. The Gini coefficient reached its highest value in the mortality rate for nutritional anaemia (0.44). Excess mortality was evident in those municipalities considered as having very high marginalization; the highest IHI was observed in the states located in the 4th quartile (Chiapas, Oaxaca and Guerrero) when analysing mortality related to childhood, pregnancy, childbirth and potentially avoidable mortality. CONCLUSIONS: Notorious health inequality exists in Mexico, associated with high prevalent levels of social exclusion in different areas of the country. Deep structural changes are needed to modify this situation, promote social development and lead to reducing the unfair disadvantages to which important population groups are exposed.",,"Record Owner: From MEDLINE, a database of the U.S. National Library of Medicine.; Status: MEDLINE; [Spanish]; Publishing Model: Journal available in: Print Citation processed from: Internet; NLM Journal Code: 100936348; Publisher Item Identifier: S0124-00642008000600003; Entry Date: 20090824",,,,,,"0124-0064; 0124-0064","http://hdl.handle.net/20.500.12104/37088","http://ovidsp.ovid.com/ovidweb.cgi?T=JS&CSC=Y&NEWS=N&PAGE=fulltext&D=med5&AN=19377724",,"Spanish",,,,"Suppl",,"Revista de Salud Publica",,"15 28",,"10",,"MEDLINE",,,,"Index Medicus;Adult;Aged;Child;Health Status Disparities;Healthcare Disparities/sn [Statistics & Numerical Data];Humans;Mexico;Mortality/td [Trends];Social Isolation;Socioeconomic Factors",,,,,,,"Exclusion Social e Inequidad en Salud en Mexico: Un Analisis Socio-espacial.","[A socio-spatial analysis of social exclusion and inequity in health in Mexico]",,"Journal Article"
"38852","123456789/35008",,"Vega Llamas, Elvia Universidad de Guadalajara",,"Vega Llamas, Elvia Universidad de Guadalajara",,"2002",,,,,,,,,,"0185-1659","http://hdl.handle.net/20.500.12104/37073",,,"Español",,,,"24",,"Cuicuilco",,"247-266",,"9",,"CLASE",,,,,,,,"Análisis del discurso",,,"Variación semántica del tiempo futuro en el discurso literario","Variación semántica del tiempo futuro en el discurso literario: de la novela La muerte de Artemio Cruz de Carlos Fuentes",,"journalArticle"
"44457","123456789/35008",,"de Alba García, J.E.G., Universidad de Guadalajara, Guadalajara, Jalisco, Mexico",,"de Alba García, J.E.G.",,"2014",,"[No abstract available]",,,,,,,,,"http://hdl.handle.net/20.500.12104/42678","http://www.scopus.com/inward/record.url?eid=2-s2.0-84901822370&partnerID=40&md5=0767b52087dee6e1dacba58bcba806eb",,,,,,"3",,"Salud Publica de Mexico",,"236 237",,"56",,"Scopus",,,,,,,,,,,,"Más sobre la enseñanza de la salud pública",,"Letter"
"38840","123456789/35008",,,,"Leal Carretero, Silvia",,"1997",,,,,,,,,,"0185-0989","http://hdl.handle.net/20.500.12104/37061",,,"Español",,,,"47",,"Tlalocan",,"27-70",,"12",,"CLASE",,,,,,,,"Etnología y antropología social",,,,"Una versión del mito huichol de la ruta de los muertos",,"journalArticle"
"38857","123456789/35008",,,"Acosta de la Cruz, José Trinidad",,"2000",,,,,,,,,,"0187-7674",,"http://hdl.handle.net/20.500.12104/37078",,"Español",,,,"73",,"Confines de relaciones internacionales y ciencia política",,"21-31",,"13",,"CLASE",,,,,,,,"Economía agrícola",,"Ventajas competitivas en el desarrollo de estrategias de comercialización para la industria cunícola del estado de Jalisco",,,,"journalArticle",
"38833","123456789/35008",,,,"Martínez Sánchez, Héctor",,"1994",,,,,,,,,,"0185-6073","http://hdl.handle.net/20.500.12104/37054",,,"Español",,,,"2",,"Revista Mexicana de Psicología",,"155-161",,"11",,"CLASE",,,,,,,,"Psicología clínica",,,,"Una identificación competencial en el estudio de la evolución psicológica",,"journalArticle"
"38858","123456789/35008",,,,"Aceves, F. J.",,"1995",,,,,,,,,,"0187-8190","http://hdl.handle.net/20.500.12104/37079",,,"Español",,,,"40",,"Revista mexicana de comunicación",,"30-34",,"7",,"CLASE",,,,,,,,"Proceso político",,,,"Videopolitica y procesos electorales",,"journalArticle"
"44458","123456789/35008",,"Barbosa-Cendejas, N., Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico; Herrera-Aguilar, A., Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca, Mexico, Mesoamerican Centre for Theoretical Physics, Universidad Autónoma de Chiapas, Tuxtla Gutierrez, Mexico, Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico; Kanakoglou, K., Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico, School of Mathematics, Aristotle University of Thessaloniki, Thessaloniki, Greece; Nucamendi, U., Instituto de Física y Matemáticas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico; Quiros, I., Departamento de Matemáticas, CUCEI, Universidad de Guadalajara, Guadalajara, Mexico",,"Barbosa-Cendejas, N. Herrera-Aguilar, A. Kanakoglou, K. Nucamendi, U. Quiros, I.",,"2014",,"We consider a scalar thick brane configuration arising in a 5D theory of gravity coupled to a self-interacting scalar field in a Riemannian manifold. We start from known classical solutions of the corresponding field equations and elaborate on the physics of the transverse traceless modes of linear fluctuations of the classical background, which obey a Schrödinger-like equation. We further consider two special cases in which this equation can be solved analytically for any massive mode with m2 ? 0, in contrast with numerical approaches, allowing us to study in closed form the massive spectrum of Kaluza-Klein (KK) excitations and to analytically compute the corrections to Newton's law in the thin brane limit. In the first case we consider a novel solution with a mass gap in the spectrum of KK fluctuations with two bound states-the massless 4D graviton free of tachyonic instabilities and a massive KK excitation-as well as a tower of continuous massive KK modes which obey a Legendre equation. The mass gap is defined by the inverse of the brane thickness, allowing us to get rid of the potentially dangerous multiplicity of arbitrarily light KK modes. It is shown that due to this lucky circumstance, the solution of the mass hierarchy problem is much simpler and transparent than in the thin Randall-Sundrum (RS) two-brane configuration. In the second case we present a smooth version of the RS model with a single massless bound state, which accounts for the 4D graviton, and a sector of continuous fluctuation modes with no mass gap, which obey a confluent Heun equation in the Ince limit. (The latter seems to have physical applications for the first time within braneworld models). For this solution the mass hierarchy problem is solved with positive branes as in the Lykken-Randall (LR) model and the model is completely free of naked singularities. We also show that the scalar-tensor system is stable under scalar perturbations with no scalar modes localized on the braneworld configuration. " 2013 Springer Science+Business Media New York.