1,331 research outputs found
Sobre la autenticidad de algunas "cabezas reducidas" de los jíbaros.. Anales del Instituto Nacional de Antropología e Historia. Num. 47 Tomo XVIII (1965) Sexta Época (1939-1966)
No full textDuggins. O. H. y M. Trotter. Age Changes in Head Hair From Birth to Maturity, ll. Medullation in Hair of Children. American Journal of Physical Anthropology, Vol. 8, No. 3, 1950, pp. 399-415.Ellis, R. A. y W. Montagna. The Skin Primates, VI. The Skin of the Gorila (Gorilla gorilla). American Joumal of Physical Anthropology, Vol. 20, No. 2, 1962, pp. 79-93.Garn, S. Hair Texture: Its Definition, Evaluation and Measurement. American Joumal of Physical Anthropology, Vol. 8, No. 4. 1950. pp. 453-63.Ham, A. W. y Thomas Sydney Leeson. Tratado de Histología. México, 1963.Hartshorne, N. H. y A. Stuart. Cristals and the Polarising Microscope. London, 1960.Hooton, E. A. Up From the Ape. New York, 1947.Kimber, C. D. Manual de Anatomía y Fisiología. México, 1960.Machida H., E. Pirkins y W. Montagna. The Skin of Primates, XXIII. A Comparative Study of the Skin of the Green Monkey (Cercopithecus aethiops) and the Sykes' Monkey (Cercopithecus mitis). American Journal of Physical Anthropology, Vol. 22, No. 4, 1964, pp. 453-65.Montilla Díaz, R. Ganado Lanar. México, 1955, pp. 299-341
. 47 Tomo XVIII (1965) Sexta Época (1939-1966). Anales del Instituto Nacional de Antropología e Historia
No full textPublicación que recopila y difunde cien años de trabajo de la antropología en México (1877-1977), integrada por documentos y manuscritos arqueológicos, antropológicos, históricos, geológicos, botánicos y lingüísticos.- Información general de las actividades del Instituto Nacional de Antropología e Historia durante el año 1965 por Eusebio Dávalos Hurtado. - La osteopatología en los teotihuacanos por Eusebio Dávalos Hurtado. - Sobre la autenticidad de algunas "cabezas reducidas" de los jíbaros por Víctor M. Becerril S. - Fonémica del guajirío por Roberto Escalante H. - La danza de "Los Montezumas" por Eduardo Matos Moctezuma. - Jerarquía maya entre los dioses lacandones por Roberto D. Bruce S. - La familia en Tlaxcalancingo. Un problema de desorganización social por Mercedes Olivera. - Los seris, desierto y mar por Margarita Nolasco Armas. - En torno a los factores que detienen el desarrollo en Chiapas, Guerrero y Tabasco por Manlio Barbosa Cano. - Andrés Molina Enríquez y la Sociedad Indianista Mexicana: el indigenismo en vísperas de la Revolución por Guillermo Bonfil Batalla. - Una lamentación de Jeremías compuesta en el siglo XVI para el uso de la Catedral de México por Thomas Stanford
Políticas laborales de género, trabajo transnacional y experiencias vividas: trabajadores y trabajadoras agrícolas migrantes en Canadá. Antropología. Boletín Oficial del Instituto Nacional de Antropología e Historia: Trabajadores agrícolas temporales mexicanos en Canada, 1974-2004. Num. 74 Nueva Época (2004) abril-junio
No full textBarrón, A.; “Mexican Women on the Move: Migrant Workers in Mexico and Canada”, en Women working The NAFTA Food Chain Women, Food & Globalization, Deborah Barndt, ed., Women´s Issues Publishing Program, Second Story Press, 1999, pp. 114-126.———; “Condiciones laborales de los inmigrantes regulados en Canadá”, en Comercio Exterior, núm. 50(4), 2000, pp. 350-353.Basok, T.; “Free to be unfree: Mexican farm workers in Canada”, en State, Capital and Society, núm. 32(2), 1999, pp. 192-221.———; “Migration of Mexican Seasonal Farm Workers to Canada and Development: Obstacles to Productive Investment”, en International Migration Review, núm. 34(1), 2000a, pp. 79-97.———; “He came, He saw, He… Stayed, Guest Worker Programs and the Issue of Non-Return”, en International Migration, núm. 38(2), 2000b, pp. 215-238.———; Tortillas and Tomatoes. Transmigrant Mexican Harvesters in Canada, Montreal & Kingston, London, Ithaca, McGill-Queen´s University Press, 2002.———; “Mexican Seasonal Migration to Canada and Development: A Community-based Comparison”, en International Migration, núm. 41(2), 2003a, pp. 3-26.———; “Human Rights and Citizenship: The Case of Mexican Migrants in Canada”, The Centre for Comparative Immigration Studies, Working Paper 72, April, 2003b.Bauder, H. & M. Corbin, “Foreign Farm Workers in Ontario: Representations in the Newsprint Media”, University of Guelph, 2002 http://www.uoguelph.ca/geography/RESEARCH/ffw-/papers/foreign-farm-workers.pdf, February 25, 2004.Bauder, H., K. Preibisch, S. Sutherland and K. Nash, “Impacts of Foreign Farm Workers in Ontario Communities”, Report prepared for the Sustainable Rural Communities Program, OMAFRA, 2003 http://www.uoguelph.ca/geography/RESEARCH/ffw/papers/impacts.pdf, February 25, 2004.Binford, L.; “Social and Economic Contradictions of Rural Migrant Contract Labor Between Tlaxcala, Mexico and Canada”, en Culture & Agriculture, núm. 24(2), 2002, pp.1-19.Colby, C., From Oaxaca to Ontario: Mexican Contract Labor in Canada and the Impact at Home, Davis, CA. The California Institute for Rural Studies, 1997.Comisión para la Cooperación Laboral, La protección de los trabajadores agrícolas migratorios en Canadá, Estados Unidos y México, Washington, 2002.Díaz, R., “La vivencia en circulación. Una introducción a la antropología de la experiencia”, en Alteridades, núm. 7(13), 1997, pp. 5-15.Downes, A. and C. Odle-Worroll, “Canadian Migrant Agricultural Workers’ Program Research Project-The Caribbean Component”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_downes_fullrep.pdf, February 12, 2004.Encalada, E.; “Exclusion and Exploitation of Migrant Farm Workers in Ontario & Community Organizing for Inclusion”, work in Progress, OISE at University of Toronto, 2003.FARMS (Foreign Agricultural Resource Management Services), Employer Information Package, Missisauga, Ontario, 2001-2003.———; Report of Migrant Farm Workers in Canada, Missisauga, Ontario, 2001.Griffith, David; “The Canadian and United States Migrant Agricultural Workers Programs: Parallels and Divergence Between two North American Seasonal Migrant Agricultural Labor Markets with respect ‘Best Practices’”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_griffith_fullrep.pdf, February 12, 2004.Lee, M.S.; “Canadá. Los otros braseros. Son legales y pagan impuestos, a cambio de ningún beneficio”, en Masiosare, La Jornada, septiembre 6-8, 2003.Mellado, M.; “Análisis jurídico del acuerdo para el empleo temporal agrícola entre los gobiernos de México y Canadá”, México, tesis de licenciatura, Universidad Tecnológica de México, 2000.Municipality of Leamington, Leamington area Greenhouse Directory, The Greenhouse Industry, 2002.Ong, A.; “The Gender and Labor Politics of Postmodernity”, en Annual Review Anthropological, Palo Alto, California, núm. 20, 1991, pp. 279-309.Preibisch, K.; “La tierra de los (no) libres: migración temporal México-Canadá y dos campos de reestructuración económica neoliberal”, en Conflictos migratorios transnacionales y respuestas comunitarias, L. Binford y M.D´Aubeterre, eds., Puebla, Benemérita Universidad Autónoma de Puebla, 2000, pp. 45-66.———; “Social Relations Practices Between Seasonal Agricultural Workers, their Employers, and the Residents of Rural Ontario”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_preibisch_fullrep.pdf, February 12, 2004.Pickard, M.; “Los trabajadores mexicanos en Canadá: mano de obra ‘semiesclava’ que Fox quiere impulsar en Estados Unidos (I/II)”, en Chiapas al Día, Centro de Investigaciones Económicas y Políticas de Acción Comunitaria, 2003, http://www.ciepac.org.mx, marzo 8, 2004.Russell, R.; “Jamaican Workers’ Participation in CSAWP and Development Consequences in the Workers’ Rural Home Communities-Canadian Migrant Agricultural Workers Program Research Project”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_preibisch_fullrep.pdf, February 12, 2004.Sandoval J.M. y R.M. Vanegas, “Migración laboral agrícola temporal mexicana hacia Estados Unidos y Canadá: viejos y nuevos problemas”, en Dimensión Antropológica, vol. 21 (enero-abril), 2001, pp. 113-172.Satzewich, V.; Racism and the Incorporation of Foreign Labour: Farm Labour Migration to Canada since 1945, London and New York, Routledge, 1991.Sharma, N.; “Race, Class, Gender and the Making of Difference: The Social Organization of ‘Migrant Workers’ in Canada”, en Atlantis, núm. (24)2, 2000, pp. 5-15.———; “On Being Not Canadian: The Social Organization of ‘migrant Workers’ in Canada”, en CRSA/RCSA (38)4, 2001, pp. 415-439.———; “Immigrant and Migrant Workers in Canada: Labour Movements, Racism and the Expansion of Globalization”, en Canadian Women Studies, núm. 21/22(4/1), 2002, pp. 17-25.Smart, J.; “Borrowed Men on Borrowed Time: Globalization, Labour Migration and Local Economies in Alberta”, en Canadian Journal of Regional Science, Metropolis, núm. 20(1-2), 1997, pp. 141-156.Throop, C.J.; “Articulating experience”, en Anthropological Theory, núm. 3(2), 2003, pp. 219-241.Turner, Víctor; “Dewey, Dilthey, and Drama: An Essay in the Anthropology of Experience”, en The Anthropology of Experience, V. Turner y E. Bruner, eds., Urbana, University of Illinois Press, 1986.UFCW (United Farmworkers of America Canadian Office), Report of Migrant Farm Workers in Canada, presented to the Honourable Bradshaw Minister of Labour, 2001.———; National Report: Status of Migrant Farm Workers in Canada, Brief presented to the Honourable Jane Stewart Minister of Human Resources Development Canada, 2002.Vanegas, R.M., “Relaciones bilaterales México-Canadá. El Memorándum de Entendimiento y su contrato laboral”, en Antropología. Boletín Oficial del INAH, núm. 59 (julio-septiembre), 2000, pp. 28-37.———; “México y el Caribe en el programa agrícola canadiense”, en Revista Mexicana de Estudios Canadienses, núm. 1(6), 2003a, http://www.amec.com.mx/revista/num_6_2003/Vanegas_Rosa.htm, enero 28, 2004.———; “A Door to Canada. Mexican Temporary Workers”, en Canadian Issues, Voices of Mexico, núm. (65), 2003b, pp. 84-89.Verduzco, G.; “El programa de trabajadores agrícolas mexicanos con Canadá: aprendizaje de una nueva experiencia”, en Un Estado Posmoderno, Gutiérrez-Haces T., ed., México, Plaza y Valdés, 2000, pp. 327-345.Verduzco, G. y M.I. Lozano, “Research Project. A study of the Program for Temporary Mexican Workers Canadian Agriculture”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_verduzco_fullrep.pdf, February 12, 2004.Verma, V., “The Mexican and Caribbean Seasonal Agricultural Workers Program: Regulatory and Policy Framework, Farm Industry Level Employment Practices, and the Future of the Program Under Unionization”, Report prepared for the North-South Institute, 2003, http://www.nsi-ins.ca/publications/csawp_verma_fullrep.pdf, February 12, 2004.Wall, Ellen, “Personal Labour Relations and Ethnicity in Ontario Agriculture”, en Deconstructing a Nation: Imigration, Multiculturalism and Racism in ‘90s Canada, Vic Satzewich, ed., Halifax, Fernwood Publishing, 1992, pp. 261-275.Weston, A. y L. Scarpa de Masellis, “Hemispheric Integration and Trade Relations –Implications for Canada’s Seasonal Agricultural Workers Program”, Report prepared for the North-South Institute, 2004, http://www.nsi-ins.ca/publications/csawp_weston_fullrep.pdf, February 12, 2004.Whitfield G. y A.P. Papadopoulos, Introduction to the Greenhouse Vegetable Industry, 2002, http://res.agr.ca/harrow/hrghar.htm, December 14, 2002.Zwarenstein, C., “Smalltown Bigissues: Migrant workers organize in Ontario”, en Canada´s Independent Labour Magazine, Toronto, June/July, 2002, pp. 4-22
¿Publicar o perecer? El caso de las Ciencias Sociales y las Humanidades en Latinoamérica
No full textAguado-López, E.; Becerril-García, A. (2016). ¿Publicar o perecer? El caso de las Ciencias Sociales y las Humanidades en Latinoamérica. Revista Española de Documentación Científica , 39(4): e151. doi: http://dx.doi. org/10.3989/redc.2016.4.1356Se busca conocer el comportamiento de las Ciencias Sociales y Humanidades en Latinoamérica respecto a la colaboración científica; se contrastan para ello las tendencias que registra Scopus (2003-2013) a través del análisis de Plume y Van Weijen (2014), y redalyc.org (2005-2014), con un universo de estudio de 220.200 artículos científicos. Se tiene que la cantidad de formas de autor se incrementó a un mayor ritmo que la cantidad de artículos publicados, donde los que inducen el comportamiento al alza son aquellos vinculados a estrategias de trabajo colaborativo y se tiende a una colaboración hacia el exterior. Estudiar las características de la producción científica actual orilla a analizar la colaboración como una de las propiedades que conforman el quehacer científico, dado que es una de las formas en que los científicos latinoamericanos hacen frente al principio “publicar o perecer”, con el cual operan los sistemas de evaluación al desempeño científico
Control of electric power microgrids: a hamiltonian approach
No full text[EN] In this paper the control problem of Power Microgrids is approached from the Passivity based Control perspective. The structure of a basic inner control scheme is proposed which guarantees that the variables associated to the power converters converge to prescribed values provided by a second control loop whose is in charge of a proper power sharing. Actually, three different alternatives for this second control scheme are presented. The presented results compose a compilation of previously reported contributions obtained under the passivity approach and they exploit at a fundamental level the fact that the model of the Microgrid under study exhibits a Port-controlled Hamiltonian system structure. In constrast with results frequently found in the literature, a formal (mathematical) proof for the stability properties of the presented schemes is provided. In addition, it is shown that the structure of the contributions holds with the requirements imposed in order to obtain an atractive practical implementation.[ES] En este trabajo se aborda el problema de control de Microrredes de potencia desde la perspectiva del Control Basado en Pasividad. Se presenta un esquema de control interno básico por medio del cual se garantiza que las variables asociadas a los convertidores de potencia tienden a valores de referencia pre-establecidos por un segundo esquema de control, el cual es responsable de un despacho de potencia adecuado. De manera específica, se presentan tres alternativas de diseño para este segundo tipo de control. Los resultados presentados son una compilación de propuestas hechas bajo el enfoque de pasividad y explotan la propiedad fundamental de que las redes estudiadas exhiben una estructura de sistema Hamiltoniano Controlado por Puerto. En contraste con resultados frecuentemente utilizados en la literatura, para las contribuciones presentadas se incluye la prueba formal (matemática) de sus propiedades de estabilidad. Adicionalmente, se muestra como la estructura de los esquemas propuestos satisfacen todos los requisitos impuestos para obtener una implementación práctica atractiva.Los resultados presentados en este trabajo han sido desarrollados en colaboración con la Dra. Sofía Ávila-Becerril, el Dr. Oscar Danilo Montoya, el Dr. Alejandro Garcés, el Dr. Juan Machado y el Dr. Isaac Ortega-Velázquez. El trabajo realizado por G. Espinosa-Pérez ha sido patrocinado por DGAPA-UNAM bajo el proyecto IN11801Espinosa-Pérez, G. (2022). Control de microrredes eléctricas de potencia: un enfoque hamiltoniano. Revista Iberoamericana de Automática e Informática industrial. 19(4):442-451. https://doi.org/10.4995/riai.2022.17020OJS442451194Agundis-Tinajero, G.,Segundo-Ramirez, J., Visairo-Cruz, N., Savaghebi, M., Guerrero, J.,Barocio, E., 2019. Power flow modeling of islanded AC microgrids with hierarchical control. International Journal of Electrical Power & Energy Systems 105, 28-36. https://doi.org/10.1016/j.ijepes.2018.08.002Alrayah Hassan, M., Yigang, H., 2020. Constant Power Load Stabilization in DC Microgrid Systems Using Passivity-Based Control With Nonlinear Disturbance Observer. IEEE Access 8, 92393-92406. https://doi.org/10.1109/ACCESS.2020.2992780Avila-Becerril, S., Espinosa-Perez, G., Fernandez, P., 2016. Dynamic Characterization of Typical Electrical Circuits via Structural Properties. Mathematical Problems in Engineering 2016. https://doi.org/10.1155/2016/7870462Avila-Becerril, S., Espinosa-Perez, G., Montoya, O., Garces, A., 2020. Passivity-based control of islanded microgrids with unknown power loads. IMA Journal of Mathematical Control and Information 37, 1548-1573. https://doi.org/10.1093/imamci/dnaa025Avila-Becerril, S., Espinosa-Perez, G., Machado, J., 2019. On the dynamic solution of power flow equations for microgrids control. IEEE 58th Conference on Decision and Control. https://doi.org/10.1109/CDC40024.2019.9029596Avila-Becerril, S., Espinosa-Perez, G., 2021. Control of islanded microgrids considering power converter dynamics. International Journal of Control 94, 2520-2530. https://doi.org/10.1080/00207179.2020.1713402Avila-Becerril, S., Espinosa-Perez, G., Machado, J., 2022. A Hamiltonian Control Approach for Electric Microgrids with Dynamic Power Flow Solution. AUTOMATICA. En prensa. https://doi.org/10.1016/j.automatica.2022.110192Bollobas, B., 2018. Modern graph theory. Springer Science & Business Media.Brayton, R., Moser, J., 1964. A theory of nonlinear networks I. Quarterly Applied Mathematics 22, 1-33. https://doi.org/10.1090/qam/169746Cisneros, R., Pirro, M., Bergna, G., Ortega, R., Ippoliti, G., Molinas, M., 2015. Global tracking passivity-based pi control of bilinear systems: Application to the interleaved boost and modular multilevel converters. Control Engineering Practice 43, 109-119. https://doi.org/10.1016/j.conengprac.2015.07.002Guerrero, J., Chandorkar, M., Lee, T., Loh, P., 2013. Advanced control architectures for intelligent microgrids, part I: decentralized and hierarchical control. IEEE Transactions on Industrial Electronics 60, 1254-1262. https://doi.org/10.1109/TIE.2012.2194969Guerrero, J., Kandari R. (Ed.), 2021. Microgrids: Modeling, Control, and Applications. Academic Press.Hart, P.J., Goldman, J., Lasseter, R.H., Jahns, T.M., 2020. Impact of Harmonics and Unbalance on the Dynamics of Grid-Forming, Frequency-DroopControlled Inverters. IEEE Journal of Emerging and Selected Topics in Power Electronics 8, 976-990. https://doi.org/10.1109/JESTPE.2019.2949303Han, H., Hou, X., Yang, J., Wu, J., Su, M., Guerrero, J., 2016. Review of power sharing control strategies for islanding operation of AC microgrids. IEEE Transactions on Smart Grid 7, 200-215. https://doi.org/10.1109/TSG.2015.2434849Khalil, H., 1996. Nonlinear systems. Prentice-Hall.Montoya, O., Gil-Gonzalez, W., Avila-Becerril, S., Garces, A., Espinosa-Perez, G., 2019. Integracion de REDs en Redes AC: una Familia de Controladores Basados en Pasividad. Revista Iberoamericana de Automatica e Informatica industrial 16, 212-221. https://doi.org/10.4995/riai.2018.10666Mujica, H., Espinosa-Perez, G., 2014. Control no lineal basado en pasividad de motores de induccion para alto desempeño dinamico. Revista Iberoamericana de Automatica e Informatica industrial 11, 32-43. https://doi.org/10.1016/j.riai.2013.08.001Mylvaganam, T., Ortega, R., Machado, J., Astolfi, A., 2018. Dynamic zero finding for algebraic equations. European Control Conference (ECC 2018). https://doi.org/10.23919/ECC.2018.8550185Ortega-Velazquez, I., Avila-Becerril, S., Espinosa-Perez, G., 2020. A Droop Approach for the Passivity-based Control of Microgrids. IFACPapersOnLine 53, 12962-12967. https://doi.org/10.1016/j.ifacol.2020.12.2137Ortega-Velazquez, I., Avila-Becerril, S., Espinosa-Perez, G., Ojeda, R., 2021. An improved passivity-based control for inverter-based Microgrids. Congreso Nacional de Control Automatico AMCA 2021.Ortega, R., Loria, A., Nicklasson, J., Sira-Ramirez, H., 2013. Passivity-based control of Euler-Lagrange systems: mechanical, electrical and electromechanical applications. Springer Science & Business Media.Ortega, R., Romero, J.G., Borja, P., Donaire, A., 2021. PID Passivity-Based Control of Nonlinear Systems with Applications. John Wiley Sons. https://doi.org/10.1002/9781119694199Rocabert, J., Luna, A., Blaabjerg, F., Rodriguez, P., 2012. Control of power converters in AC microgrids. IEEE Transactions on Power Electronics 27, 4734-4749. https://doi.org/10.1109/TPEL.2012.2199334Sepulchre, R., Jankovic, M., Kokotovic, P., 2012. Constructive nonlinear control. Springer Science & Business Media.Van del Schaft, A., 2017. L2-Gain and Passivity Techniques in Nonlinear Control. Springer International Publishing AG. https://doi.org/10.1007/978-3-319-49992-5Wellstead, P., 1979. Introduction to physical system modelling. Academic Press London.Zhong, Q., Hornik, T., 2013. Control of power inverters in Renewable energy and smart grid integration. Wiley. https://doi.org/10.1002/9781118481806Zhongwen, L., Chuanzhi, Z., Peng, Z., Haibin, Y., Shuhui, L., 2018. Fully Distributed Hierarchical Control of Parallel Grid-Supporting Inverters in Islanded AC Microgrids. IEEE Transactions on Industrial Informatics 14, 679-690. https://doi.org/10.1109/TII.2017.2749424Zonetti, D., Bergna-Diaz, G., Ortega, R., Monshizadeh, N., 2022. PID passivity-based droop control of power converters: Large-signal stability, robustness and performance. International Journal of Robust and Nonlinear Control 32, 1769-1795. https://doi.org/10.1002/rnc.591
Mapping of research on maternal health interventions in low- and middle-income countries: a review of 2292 publications between 2000 and 2012.
No full textBACKGROUND: Progress in achieving maternal health goals and the rates of reductions in deaths from individual conditions have varied over time and across countries. Assessing whether research priorities in maternal health align with the main causes of mortality, and those factors responsible for inequitable health outcomes, such as health system performance, may help direct future research. The study thus investigated whether the research done in low- and middle-income countries (LMICs) matched the principal causes of maternal deaths in these settings. METHODS: Systematic mapping was done of maternal health interventional research in LMICs from 2000 to 2012. Articles were included on health systems strengthening, health promotion; and on five tracer conditions (haemorrhage, hypertension, malaria, HIV and other sexually transmitted infections (STIs)). Following review of 35,078 titles and abstracts in duplicate, data were extracted from 2292 full-text publications. RESULTS: Over time, the number of publications rose several-fold, especially in 2004-2007, and the range of methods used broadened considerably. More than half the studies were done in sub-Saharan Africa (55.4 %), mostly addressing HIV and malaria. This region had low numbers of publications per hypertension and haemorrhage deaths, though South Asia had even fewer. The proportion of studies set in East Asia Pacific dropped steadily over the period, and in Latin America from 2008 to 2012. By 2008-2012, 39.1 % of articles included health systems components and 30.2 % health promotion. Only 5.4 % of studies assessed maternal STI interventions, diminishing with time. More than a third of haemorrhage research included health systems or health promotion components, double that of HIV research. CONCLUSION: Several mismatches were noted between research publications, and the burden and causes of maternal deaths. This is especially true for South Asia; haemorrhage and hypertension in sub-Saharan Africa; and for STIs worldwide. The large rise in research outputs and range of methods employed indicates a major expansion in the number of researchers and their skills. This bodes well for maternal health if variations in research priorities across settings and topics are corrected
Measurement of the t t ¯ H and tH production rates in the H → b b ¯ decay channel using proton-proton collision data at s = 13 TeV
No full textAbstract An analysis of the production of a Higgs boson (H) in association with a top quark-antiquark pair ( t t ¯ H ) or a single top quark (tH) is presented. The Higgs boson decay into a bottom quark-antiquark pair (H → b b ¯ ) is targeted, and three different final states of the top quark decays are considered, defined by the number of leptons (electrons or muons) in the event. The analysis utilises proton-proton collision data collected at the CERN LHC with the CMS experiment at s = 13 TeV in 2016–2018, which correspond to an integrated luminosity of 138 fb −1. The observed t t ¯ H production rate relative to the standard model expectation is 0.33 ± 0.26 = 0.33 ± 0.17(stat) ± 0.21(syst). Additionally, the t t ¯ H production rate is determined in intervals of Higgs boson transverse momentum. An upper limit at 95% confidence level is set on the tH production rate of 14.6 times the standard model prediction, with an expectation of 19.3 − 6.0 + 9.2 . Finally, constraints are derived on the strength and structure of the coupling between the Higgs boson and the top quark from simultaneous extraction of the t t ¯ H and tH production rates, and the results are combined with those obtained in other Higgs boson decay channels
CARMENES: High-resolution spectra and precise radial velocities in the red and infrared
No full textSPIE Astronomical Telescopes + Instrumentation (2018, Austin, Texas, United States)CSIC, Consejo Superior de Investigaciones Científicas; FEDER/ERF FICTS-2011-02, EGU, European Geosciences Union; MPG, Max-Planck-Gesellschaft; KTS, Klaus Tschira Stiftung; CSIC, Comisión Sectorial de Investigación Científica; MPG, Max-Planck-GesellschaftQuirrenbach, A., Amado, P.J., Ribas, I., Reiners, A., Caballero, J.A., Seifert, W., Aceituno, J., Azzaro, M., Baroch, D., Barrado, D., Bauer, F., Becerril, S., Bèjar, V.J.S., Benítez, D., Brinkmöller, M., Cardona Guillén, C., Cifuentes, C., Colomé, J., Cortés-Contreras, M., Czesla, S., Dreizler, S., Frölich, K., Fuhrmeister, B., Galadí-Enríquez, D. , González Hernández, J.I., González Peinado, R., Guenther, E.W., De Guindos, E. , Hagen, H.-J. , Hatzes, A.P. , Hauschildt, P.H., Helmling, J., Henning, T., Herbort, O., Hernández Castaño, L. , Herrero, E., Hintz, D., Jeffers, S.V., Johnson, E.N. , De Juan, E., Kaminski, A., Klahr, H., Kürster, M., Lafarga, M., Sairam, L. and Lampón, M. and Lara, L.M. and Launhardt, R. and López Del Fresno, M. and López-Puertas, M., Luque, R. , Mandel, H., Marfil, E.G., Martín, E.L., Martín-Ruiz, S., Mathar, R.J. , Montes, D. , Morales, J.C., Nagel, E. , Nortmann, L., Nowak, G., Pallé, E., Passegger, V.-M., Pavlov, A., Pedraz, S., Pérez-Medialdea, D. , Perger, M., Rebolo, R., Reffert, S. , Rodríguez, E., Rodríguez López, C. , Rosich, A. , Sabotta, S., Sadegi, S., Salz, M., Sánchez-López, A., Sanz-Forcada, J., Sarkis, P., Schäfer, S., Schiller, J., Schmitt, J.H.M.M. , Schöfer, P., Schweitzer, A., Shulyak, D., Solano, E., Stahl, O. , Tala Pinto, M., Trifonov, T., Zapatero Osorio, M.R., Yan, F., Zechmeister, M., Abellán, F.J., Abril, M., Alonso-Floriano, F.J., Ammler-Von Eiff, M., Anglada-Escudé, G., Anwand-Heerwart, H., Arroyo-Torres, B., Berdiñas, Z.M. , Bergondy, G., Blümcke, M. , Del Burgo, C., Cano, J., Carro, J., Cárdenas, M.C. , Casal, E., Claret, A., Díez-Alonso, E., Doellinger, M., Dorda, R., Feiz, C., Fernández, M. , Ferro, I.M., Gaisné, G., Gallardo, I., Gálvez-Ortiz, M.C. , García-Piquer, A. , García-Vargas, M.L., Garrido, R., Gesa, L. , Gómez Galera, V. , González-Álvarez, E. , González-Cuesta, L., Grohnert, S., Grözinger, U., Guàrdia, J., Guijarro, A., Hedrosa, R.P., Hermann, D., Hermelo, I., Hernández Arabí, R., Hernández Hernando, F., Hidalgo, D., Holgado, G., Huber, A., Huber, K., Huke, P., Kehr, M., Kim, M. , Klein, R., Klüter, J., Klutsch, A., Labarga, F. , Labiche, N., Lamert, A., Laun, W., Lázaro, F.J., Lemke, U. , Lenzen, R. , Llamas, M., Lizon, J.-L., Lodieu, N., López González, M.J., López-Morales, M., López Salas, J.F., López-Santiago, J., Magán Madinabeitia, H., Mall, U. , Mancini, L., Marín Molina, J.A., Martínez-Rodríguez, H., Maroto Fernández, D., Marvin, C.J. and Mirabet, E. and Moreno-Raya, M.E. and Moya, A. and Mundt, R. and Naranjo, V. and Ofir, A., Panduro, J., Pascual, J., Pérez-Calpena, A., Perryman, M.A.C., Pluto, M., Ramón, A., Redondo, P., Reinhart, S. , Rhode, P., Rix, H.-W., Rodler, F., Rohloff, R.-R. , Sánchez-Blanco, E. , Sánchez Carrasco, M.A., Sarmiento, L.F., Schmidt, C., Storz, C., Strachan, J.B.P., Stürmer, J., Suárez, J.C. , Tabernero, H.M. , Tal-Or, L., Tulloch, S.M., Ulbrich, R.-G., Veredas, G., Vico Linares, J.L., Vidal-Dasilva, M., Vilardell, F., Wagner, K., Winkler, J., Wolthoff, V. , Xu, W., Zhao, Z
Author Correction: A portrait of the Higgs boson by the CMS experiment ten years after the discovery
No full textIn the version of this article initially published, CMS Collaboration author names, affiliations and acknowledgements were omitted and have now been included in the HTML and PDF versions of the articl
Validation of microsatellite markers for cytotype discrimination in the model grass Brachypodium distachyon
No full textBrachypodium distachyon (2n = 2x = 10) is a small annual grass species where the existence of three different cytotypes (10, 20 and 30 chromosomes) has long been regarded as a case of autopolyploid series, with x = 5. However, it has been demonstrated that the cytotypes assumed to be polyploids represent two separate Brachypodium species recently named as B. stacei (2n = 2x = 20) and B. hybridum (2n = 4x = 30). The aim of this study was to find a PCR-based alternative approach that could replace standard cytotyping methods (i. e., chromosome counting and flow cytometry) to characterize each of the three Brachypodium species. We have analyzed with four microsatellite (SSR) markers eighty-three Brachypodium distachyon-type lines from varied locations in Spain, including the Balearic and Canary Islands. Within this set of lines, 64, 4 and 15 had 10, 20 and 30 chromosomes, respectively. The surveyed markers produced cytotype-specific SSR profiles. So, a single amplification product was generated in the diploid samples, with non-overlapping allelic ranges between the 2n = 10 and 2n = 20 cytotypes, whereas two bands, one in the size range of each of the diploid cytotypes, were amplified in the 2n = 30 lines. Furthermore, the remarkable size difference obtained with the SSR ALB165 allowed the identification of the Brachypodium species by simple agarose gel electrophoresis
- …
