267 research outputs found

    The novelty of Latin America: Globalizations, futures, and nations. Part I

    Get PDF
    This essay argues that Latin America created a modern cutting edge design of the nation and national identity long before Europe. In many aspects, it was more modern than the United States. The region is seen as a modernizer and globalizer rather than a mere recipient of influences. In light of these findings, the essay revisits theories of the Nation, National Identity, Modernization and Globalization. Most literature on the construction of national identity and nationalism focuses on communal past experiences and history to explain the nation. Rather, I claim that a different dimension and intellectual construct, ‘the future of the nation’, provides one of the most fundamental building blocks of national identity in the modern world.

    Modernization theory revisited: latin america, europe, and the u.s. in the nineteenth and early twentieth century

    Get PDF
    Theories of modernization, globalization, and dependency have assigned a clear role to Latin America: the region has been seen as dependent, exploited, and institutionally weak. In these theories, modernization and globalization are seen as forces generated elsewhere; the region, in these views, has merely tried to “adjust” and “respond” to these external influences. At best, it has imitated some of the political institutions of the core countries and, most of the times, unsuccessfully. While there is very good empirical evidence that supports these views, the essay argues that these theories need some correction. Latin America has been an innovator and a modernizer in its own right, especially in its cutting-edge design of the nation-state and in its modern conceptualization of the national community. Thus, the essay suggests that the region has not merely “adjusted” to modernization and globalization. Rather, the paper makes a case for a reinterpretation of the region’s role as a modernizer and an important contributor to the consolidation of the modern West

    Paths of modernity: comparing Europe, the United States and Latin America

    Get PDF
    It is argued that Latin America contributed to modernity and the spread of what literature has called «the modern West». Rather than just imitating, reacting, or adjusting to the paradigms of modernity (and globalization), in the nineteenth century and early twentieth, the region elaborated and created modernity. This can be seen in two related but different processes: the formation of the Nation-State and the conceptualization of the Nation. While Latin America did, of course, look at Europe and the United States as possible models and attempted to emulate someof their modernity, no Latin American country seriously believed that they could reproduce Europe or the United States. Rather, in the context of post-colonialism, the region pioneered some of the precepts of modernity. The result was, as these brief comparisons with Europe and the United States suggest, a different path to modernity that later, in the twentieth century, one could find elsewhere in the global system.Se ha argumentado que América Latina no contribuyó a la modernidad y la expansión de lo que la literatura ha llamado «el Occidente moderno». Sin embargo, en lugar de sólo imitar, reaccionar o ajustarse a los paradigmas de la modernidad (y de la globalización), la región elaboró y creó modernidad durante el siglo XIX e inicios del siglo XX. Esto puede observarse en dos procesos distintos pero relacionados entre sí: la formación del Estado-Nación y la conceptualización de la Nación. Aun cuando América Latina sí miró a Europa y a Estados Unidos (EE.UU.) como posibles modelos e incluso intentó emular algo de su modernidad, ningún país latinoamericano creyó seriamente que podría reproducir a Europa o a EE.UU. Más bien, en el contexto del poscolonialismo, la región fue pionera en algunos de los preceptos de modernidad. El resultado fue, como estas breves comparaciones con Europa y EE.UU. sugieren, un camino distinto a la modernidad que posteriormente, durante el siglo XX, se podía encontrar en otros lugares del sistema global

    Copper nanoparticles stabilized with cashew gum: Antimicrobial activity and cytotoxicity against 4T1 mouse mammary tumor cell line

    Get PDF
    Copper nanoparticles stabilized with cashew (CG-CuNPs) were synthesized by reduction reaction using ascorbic acid and sodium borohydride, using the cashew gum (CG) as a natural polymer stabilizer. Dynamic light scattering, atomic force microscopy, Fourier-transform infrared spectroscopy, UV-Vis spectrophotometry, and x-ray diffraction were used to characterize the nanoparticles (CG-CuNPs), and copper was quantified by electrochemical measurement. The UV-vis spectra of the CG-CuNPs confirmed the formation of nanoparticles by appearance of a surface plasmon band at 580 nm after 24 h of reaction. The Fourier-transform infrared spectrum of CG-CuNPs showed the peak at 1704 cm−1 from cashew gum, confirming the presence of the gum in the nanoparticles. The average size of CG-CuNPs by dynamic light scattering and atomic force microscopy was around 10 nm, indicating small, approximately spherical particles. Antimicrobial assays showed that CG-CuNPs had activity against Staphylococcus aureus ATCC 29213 with a minimal inhibitory concentration of 0.64 mM. The cytotoxicity assay on BALB/c murine macrophages showed lower cytotoxic effects for CG-CuNPs than CuSO4·5H2O. Viability cell assays for CG-CuNPs at (0.250 mM) inhibited by 70% the growth of 4T1 LUC (4T1 mouse mammary tumor cell line) and NIH 3T3 cells (murine fibroblast cells) over a 24-h period. Therefore, CG-CuNPs can be used as an antimicrobial agent with lower cytotoxic effects than the CuSO4·5H2O precursor.The author would like to thank at UCM for performingDPV, USP by X-ray diffraction experiment, REQUIMTE/LAQV for FTIR, UnB and UFPI for the cytotoxicityassays, as well as at UFPI for help with DLS, UV-Vis,AFM, and microbiological experiments. This work was supported by Project 400398/2014-1—Desenvolvimento de Nanopartículas Estabilizadas com Goma de Cajueiro para Aplicações Biotecnologicas, financed by CNPq. AlexandraPlácido is grateful to FCT by her grant SFRH/BD/97995/2013, financed by POPH-QREN-Tipologia 4.1-Formação Avançada, subsidized by Fundo Social Europeu and Ministério da Ciência, Tecnologia e Ensino Superior.info:eu-repo/semantics/publishedVersio

    Measurement of the cosmic ray spectrum above 4×10184{\times}10^{18} eV using inclined events detected with the Pierre Auger Observatory

    Full text link
    A measurement of the cosmic-ray spectrum for energies exceeding 4×10184{\times}10^{18} eV is presented, which is based on the analysis of showers with zenith angles greater than 6060^{\circ} detected with the Pierre Auger Observatory between 1 January 2004 and 31 December 2013. The measured spectrum confirms a flux suppression at the highest energies. Above 5.3×10185.3{\times}10^{18} eV, the "ankle", the flux can be described by a power law EγE^{-\gamma} with index γ=2.70±0.02(stat)±0.1(sys)\gamma=2.70 \pm 0.02 \,\text{(stat)} \pm 0.1\,\text{(sys)} followed by a smooth suppression region. For the energy (EsE_\text{s}) at which the spectral flux has fallen to one-half of its extrapolated value in the absence of suppression, we find Es=(5.12±0.25(stat)1.2+1.0(sys))×1019E_\text{s}=(5.12\pm0.25\,\text{(stat)}^{+1.0}_{-1.2}\,\text{(sys)}){\times}10^{19} eV.Comment: Replaced with published version. Added journal reference and DO

    Energy Estimation of Cosmic Rays with the Engineering Radio Array of the Pierre Auger Observatory

    Full text link
    The Auger Engineering Radio Array (AERA) is part of the Pierre Auger Observatory and is used to detect the radio emission of cosmic-ray air showers. These observations are compared to the data of the surface detector stations of the Observatory, which provide well-calibrated information on the cosmic-ray energies and arrival directions. The response of the radio stations in the 30 to 80 MHz regime has been thoroughly calibrated to enable the reconstruction of the incoming electric field. For the latter, the energy deposit per area is determined from the radio pulses at each observer position and is interpolated using a two-dimensional function that takes into account signal asymmetries due to interference between the geomagnetic and charge-excess emission components. The spatial integral over the signal distribution gives a direct measurement of the energy transferred from the primary cosmic ray into radio emission in the AERA frequency range. We measure 15.8 MeV of radiation energy for a 1 EeV air shower arriving perpendicularly to the geomagnetic field. This radiation energy -- corrected for geometrical effects -- is used as a cosmic-ray energy estimator. Performing an absolute energy calibration against the surface-detector information, we observe that this radio-energy estimator scales quadratically with the cosmic-ray energy as expected for coherent emission. We find an energy resolution of the radio reconstruction of 22% for the data set and 17% for a high-quality subset containing only events with at least five radio stations with signal.Comment: Replaced with published version. Added journal reference and DO
    corecore