559 resultados para bk: Berber
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Neste artigo, apresentaremos um estudo da tradução da obra Inferno da autora Patrícia Melo, com o título Inferno, por Clifford Landers. Buscamos refletir sobre como são projetados no exterior uma visão da realidade violenta de grandes centros urbanos brasileiros e sobre o quanto o tradutor conseguiu resgatar da nossa sociedade no texto traduzido. Partimos do pressuposto de que o tradutor, consciente ou inconscientemente, usa recursos durante o processo de mediação entre o texto de partida e o texto de chegada, que tornam a leitura da obra traduzida mais fácil. Baker (1996) propõe a investigação de tipos de comportamento linguístico característicos de textos traduzidos. O objetivo desse trabalho é identificar aspectos de normalização presentes na tradução. Para a investigação, recorremos aos Estudos da Tradução Baseados em Corpus (Baker, 1993, 1996; Camargo, 2005, 2007), à Linguística de Corpus (Berber Sardinha, 2004) e aos estudos sobre normalização de Scott (1998). Pode-se observar a ocorrência de mudança de registro de linguagem, omissões, adições, diferenças no comprimento das sentenças e relacionadas a imprecisões de expressões. Espera-se que o presente trabalho possa contribuir para uma maior conscientização das tendências apresentadas pelos tradutores, e para apresentar as possibilidades oferecidas pela intersecção dos Estudos da Tradução Baseados em Corpus e da Linguística de Corpus.
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The main purpose of this article is to investigate the aspects of explicitation in English translation of terms and expressions in two of Darcy Ribeiro’s anthropological works. The methodology used is that of Corpus-Based Translation Studies (BAKER, 1993, 1995, CAMARGO, 2005, 2007), Corpus Linguistics (BERBER SARDINHA, 2004) and Terminology (BARROS, 2004). According to Baker (1996), explicitation is the tendency to explain, in the translated text, parts of the original text that had been left implicit. Results show that these tendencies may be found in Ribeiro’s translated texts, indicating the difficulty of conceptualizing the Brazilian universe in English.
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The main purpose of this paper is to observe the Portuguese into English translational process regarding the metaphors of specific lexical units related to erogenous zones and to intercourse in the context of the literary work Maira (1978), written by Darcy Ribeiro, as well as in its translation, Maíra (1985), performed by Goodland e Colchie. We based our study on an interdisciplinary proposal that associates the theoretical framework of Lexical Studies (BIDERMAN, 1996; LAKOFF; JOHNSON, 2002; ORSI, 2007, 2009; ORSI; ZAVAGLIA, 2007; 2012; PRETI, 1984; XATARA; RIVA; RIOS, 2002; XATARA, 2004), Corpus-Based Translation Studies (BAKER, 1993, 1995; CAMARGO, 2005), Corpus Linguistics (TYMOCZKO, 1998; BERBER SARDINHA, 2004), and, in part, Terminology (COELHO, 2003; BARROS, 2004; FAULSTICH, 2004). Concerning the methodology, we used the program WordSmith Tools, which provided the tools WordList and Concord, for collection and observation of data. We thus verified the value attributed to the erotic-obscene lexicon in Darcy Ribeiro’s literary-textual construction, and we also analyzed the reformulation of taboo lexicon in English. Finally, we intended to reflect on the process of translation of these lexical units considered socially disreputable, in an attempt to provide a possible support fortranslators, linguists, writers and social scientists.
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The main purpose of this article is to investigate the social and linguistic behaviors of a translator, analyzing the use of simplification aspects in the translational process into English of the Anthropology developed by Darcy Ribeiro. With this aim, we used a parallel corpus composed by the work O povo brasileiro (1995) and by its respective translation, performed by Rabassa. The methodology used is that of Corpus-Based Translation Studies (BAKER, 1993, 1995, 1996; CAMARGO, 2005, 2007), Corpus Linguistics (BERBER SARDINHA, 2004) and Terminology (BARROS, 2004). We also adopted Sociology of Translation theories (SIMEONI, 1998, 2007; GOUANVIC,1999, 2005), as well as the habitus conception, proposed by Bourdieu (1980). Results show that this simplification may be found in Ribeiro’s translated texts, indicating the difficulties of conceptualizing the Brazilian universe in English
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The main purpose of this article is to investigate the social and linguistic behaviors (the habitus) of a translator in face of cultural barriers in translation, analyzing the use of explicitation aspects in the translational process into English of the terminological Brazilianisms developed by Darcy Ribeiro. With this aim, we used a parallel corpus composed by the work O povo brasileiro (1995) and by its respective translation, performed by Rabassa. The methodology used is that of Corpus-Based Translation Studies (BAKER, 1993, 1995, 1996, 2000; CAMARGO, 2005, 2007), Corpus Linguistics (BERBER SARDINHA, 2004) and Terminology (BARROS, 2004). For data analysis, we adopted Sociology of Translation theories (SIMEONI, 1998, 2007; GOUANVIC, 1995, 1999), as well as the habitus conception, proposed by the sociologist Pierre Bourdieu (1980). We believe that, as pointed by Baker`s theories (1996), explicitation is a translator`s tendency or procedure, which explains, in the translated text, parts of the original text that have been left implicit by the author. Results show that this action may be found in Ribeiro’s translated texts, indicating the difficult of conceptualizing the Brazilian universe in English.
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This paper presents the analysis and the methodological procedures adopted in order to compile a parallel corpus comprised of two short stories by David Roas (2007; 2010), originally written in Spanish “Tránsito” and “Das Kapital”, and their translation into Portuguese carried out both by a native speaker of Spanish (fluent in Portuguese) and a native speaker of Portuguese (fluent in Spanish). We analyzed the texts translated by them, focusing on the most frequent vocabulary and its semantic implications on their respective contexts. The theoretical and methodological approach was based on corpus linguistics, corpus based translation studies (BAKER, 1996; HUNSTON, 2002; LAVIOSA, 2002; BERBER SARDINHA, 2004; MEYER, 2004; OLOHAN, 2004) and some concepts from Fantastic Literature (ROAS, 2001, 2011; TODOROV, 2003; ALAZRAKI, 2001). The data were extracted by using the WordSmith Tools Suite®. Results show that dialogue and focus on lexicon, making use of computer corpus, play an important role in understanding the translation process. It is also important to mention that while exploring translation possibilities presented by the two translators this approach unlocked a window to reflect on translation pedagogy based on corpus.
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The aim of this research is to build and analyze a parallel corpus in the field of remote sensing in order to identify, according to its frequency, specialized collocations in English and then search for their equivalents in Portuguese. The research is based on the interdisciplinary approach of Corpus-Based Translation Studies (BAKER, 1995; CAMARGO, 2007), Corpus Linguistics (BERBER SARDINHA, 2004; TOGNINI-BONELLI, 2001), Phraseology (ORENHA-OTTAIANO, 2009; PAVEL, 1993), and some principles of Terminology (BARROS, 2004). For manipulating the corpora, the program WordSmith Tools (SCOTT, 2012) version 6.0 is used. To support this study, two comparable corpora in English and Portuguese were also built from articles published in both national and international journals in remote sensing. The results show that the collocations in Portuguese seem to be still in the process of conventionalization, as the translators made use of greater variation in their translational options, which can be a way to make the text clearer for the reader.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Estudos Linguísticos - IBILCE
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BACKGROUND AND PURPOSE Independent studies in experimental models of Trypanosoma cruzi appointed different roles for endothelin-1 (ET-1) and bradykinin (BK) in the immunopathogenesis of Chagas disease. Here, we addressed the hypothesis that pathogenic outcome is influenced by functional interplay between endothelin receptors (ETAR and ETBR) and bradykinin B2 receptors (B2R). EXPERIMENTAL APPROACH Intravital microscopy was used to determine whether ETR/B2R drives the accumulation of rhodamine-labelled leucocytes in the hamster cheek pouch (HCP). Inflammatory oedema was measured in the infected BALB/c paw of mice. Parasite invasion was assessed in CHO over-expressing ETRs, mouse cardiomyocytes, endothelium (human umbilical vein endothelial cells) or smooth muscle cells (HSMCs), in the presence/absence of antagonists of B2R (HOE-140), ETAR (BQ-123) and ETBR (BQ-788), specific IgG antibodies to each GPCRs; cholesterol or calcium-depleting drugs. RNA interference (ETAR or ETBR genes) in parasite infectivity was investigated in HSMCs. KEY RESULTS BQ-123, BQ-788 and HOE-140 reduced leucocyte accumulation in HCP topically exposed to trypomastigotes and blocked inflammatory oedema in infected mice. Acting synergistically, ETAR and ETBR antagonists reduced parasite invasion of HSMCs to the same extent as HOE-140. Exogenous ET-1 potentiated T. cruzi uptake by HSMCs via ETRs/B2R, whereas RNA interference of ETAR and ETBR genes conversely reduced parasite internalization. ETRs/B2R-driven infection in HSMCs was reduced in HSMC pretreated with methyl-beta-cyclodextrin, a cholesterol-depleting drug, or in thapsigargin-or verapamil-treated target cells. CONCLUSIONS AND IMPLICATIONS Our findings suggest that plasma leakage, a neutrophil-driven inflammatory response evoked by trypomastigotes via the kinin/endothelin pathways, may offer a window of opportunity for enhanced parasite invasion of cardiovascular cells.
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Abstract Background While it is well known that bradykinin B2 agonists increase plasma protein extravasation (PPE) in brain tumors, the bradykinin B1 agonists tested thus far are unable to produce this effect. Here we examine the effect of the selective B1 agonist bradykinin (BK) Sar-[D-Phe8]des-Arg9BK (SAR), a compound resistant to enzymatic degradation with prolonged activity on PPE in the blood circulation in the C6 rat glioma model. Results SAR administration significantly enhanced PPE in C6 rat brain glioma compared to saline or BK (p < 0.01). Pre-administration of the bradykinin B1 antagonist [Leu8]-des-Arg (100 nmol/Kg) blocked the SAR-induced PPE in the tumor area. Conclusions Our data suggest that the B1 receptor modulates PPE in the blood tumor barrier of C6 glioma. A possible role for the use of SAR in the chemotherapy of gliomas deserves further study.
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A reassessment of the taxonomic status of Amblyomma cajennense based on the morphological analyses of ticks from the whole distribution area of the species resulted in the redescription of A. cajennense, the validation of 2 species which had been reduced to synonymy in the past, Amblyomma mixtum and Amblyomma sculptum, and the description and definition of 3 new species, Amblyomma tonelliae n. sp., Amblyomma interandinum n. sp., and Amblyomma patinoi n. sp. This study provides descriptions and redescriptions, scanning electron microscopic and stereomicroscopic images, updated synonymies, information on geographical distributions, and host associations for each of the 6 species. Amblyomma cajennense s.s. is found in the Amazonian region of South America, A. interandinum is reported from the northern part of the Inter-Andean valley of Peru, A. mixtum is present from Texas (U.S.A.) to western Ecuador, A. patinoi occurs in the Eastern Cordillera of Colombia, A. tonelliae is associated with the dry areas of the Chaco region which spans from central-northern Argentina to Bolivia and Paraguay, whereas A. sculptum is distributed from the humid areas of northern Argentina, to the contiguous regions of Bolivia and Paraguay and the coastal and central-western states of Brazil.
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Ion channels are protein molecules, embedded in the lipid bilayer of the cell membranes. They act as powerful sensing elements switching chemicalphysical stimuli into ion-fluxes. At a glance, ion channels are water-filled pores, which can open and close in response to different stimuli (gating), and one once open select the permeating ion species (selectivity). They play a crucial role in several physiological functions, like nerve transmission, muscular contraction, and secretion. Besides, ion channels can be used in technological applications for different purpose (sensing of organic molecules, DNA sequencing). As a result, there is remarkable interest in understanding the molecular determinants of the channel functioning. Nowadays, both the functional and the structural characteristics of ion channels can be experimentally solved. The purpose of this thesis was to investigate the structure-function relation in ion channels, by computational techniques. Most of the analyses focused on the mechanisms of ion conduction, and the numerical methodologies to compute the channel conductance. The standard techniques for atomistic simulation of complex molecular systems (Molecular Dynamics) cannot be routinely used to calculate ion fluxes in membrane channels, because of the high computational resources needed. The main step forward of the PhD research activity was the development of a computational algorithm for the calculation of ion fluxes in protein channels. The algorithm - based on the electrodiffusion theory - is computational inexpensive, and was used for an extensive analysis on the molecular determinants of the channel conductance. The first record of ion-fluxes through a single protein channel dates back to 1976, and since then measuring the single channel conductance has become a standard experimental procedure. Chapter 1 introduces ion channels, and the experimental techniques used to measure the channel currents. The abundance of functional data (channel currents) does not match with an equal abundance of structural data. The bacterial potassium channel KcsA was the first selective ion channels to be experimentally solved (1998), and after KcsA the structures of four different potassium channels were revealed. These experimental data inspired a new era in ion channel modeling. Once the atomic structures of channels are known, it is possible to define mathematical models based on physical descriptions of the molecular systems. These physically based models can provide an atomic description of ion channel functioning, and predict the effect of structural changes. Chapter 2 introduces the computation methods used throughout the thesis to model ion channels functioning at the atomic level. In Chapter 3 and Chapter 4 the ion conduction through potassium channels is analyzed, by an approach based on the Poisson-Nernst-Planck electrodiffusion theory. In the electrodiffusion theory ion conduction is modeled by the drift-diffusion equations, thus describing the ion distributions by continuum functions. The numerical solver of the Poisson- Nernst-Planck equations was tested in the KcsA potassium channel (Chapter 3), and then used to analyze how the atomic structure of the intracellular vestibule of potassium channels affects the conductance (Chapter 4). As a major result, a correlation between the channel conductance and the potassium concentration in the intracellular vestibule emerged. The atomic structure of the channel modulates the potassium concentration in the vestibule, thus its conductance. This mechanism explains the phenotype of the BK potassium channels, a sub-family of potassium channels with high single channel conductance. The functional role of the intracellular vestibule is also the subject of Chapter 5, where the affinity of the potassium channels hEag1 (involved in tumour-cell proliferation) and hErg (important in the cardiac cycle) for several pharmaceutical drugs was compared. Both experimental measurements and molecular modeling were used in order to identify differences in the blocking mechanism of the two channels, which could be exploited in the synthesis of selective blockers. The experimental data pointed out the different role of residue mutations in the blockage of hEag1 and hErg, and the molecular modeling provided a possible explanation based on different binding sites in the intracellular vestibule. Modeling ion channels at the molecular levels relates the functioning of a channel to its atomic structure (Chapters 3-5), and can also be useful to predict the structure of ion channels (Chapter 6-7). In Chapter 6 the structure of the KcsA potassium channel depleted from potassium ions is analyzed by molecular dynamics simulations. Recently, a surprisingly high osmotic permeability of the KcsA channel was experimentally measured. All the available crystallographic structure of KcsA refers to a channel occupied by potassium ions. To conduct water molecules potassium ions must be expelled from KcsA. The structure of the potassium-depleted KcsA channel and the mechanism of water permeation are still unknown, and have been investigated by numerical simulations. Molecular dynamics of KcsA identified a possible atomic structure of the potassium-depleted KcsA channel, and a mechanism for water permeation. The depletion from potassium ions is an extreme situation for potassium channels, unlikely in physiological conditions. However, the simulation of such an extreme condition could help to identify the structural conformations, so the functional states, accessible to potassium ion channels. The last chapter of the thesis deals with the atomic structure of the !- Hemolysin channel. !-Hemolysin is the major determinant of the Staphylococcus Aureus toxicity, and is also the prototype channel for a possible usage in technological applications. The atomic structure of !- Hemolysin was revealed by X-Ray crystallography, but several experimental evidences suggest the presence of an alternative atomic structure. This alternative structure was predicted, combining experimental measurements of single channel currents and numerical simulations. This thesis is organized in two parts, in the first part an overview on ion channels and on the numerical methods adopted throughout the thesis is provided, while the second part describes the research projects tackled in the course of the PhD programme. The aim of the research activity was to relate the functional characteristics of ion channels to their atomic structure. In presenting the different research projects, the role of numerical simulations to analyze the structure-function relation in ion channels is highlighted.
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SETTING: Cordoba, Spain, 1135 CE, 29th year of the reign of ‘Ali “amir al-muslimin,” second king of the Berber Almoravid dynasty, rulers of Moorish Spain from 1071 to 1147. Cordoba, the capital of Andalus and the center of the Almoravid holdings in Spain, is a bustling cosmopolitan center, a crossroads for Europe and the Middle East, and the meeting-point of three religious traditions. Most significantly, Cordoba at this time is the hub of European intellectual activity. From the square—itself impressively large and surrounded by a massive collonade, the regularity and ordered beauty of which typifies the Moorish taste for symmetry (so beloved of M.C. Escher)—can be seen the huge Cordoban mosque, erected in the 8th-century by Khalif Abd-er-Rahman I to the glory of Allah, oft forgiving, most merciful. It is the second largest building in Islam, and the bastion of the still entrenched but soon to fade Muslim presence in western Europe. SCENE: Three figures sit upon stone benches beneath the westernmost colonnade of the Cordoban mosque, involved in an animated, though friendly discussion on matters of faith and reason, knowledge and God, language and logic. The host is none other than Jehudah Halevi, and his esteemed guests Master Peter Abelard and the venerable Råmånuja, whose obviously advanced age belies his youthful voice, gleaming eye, quick hands, and general exuberance. It is autumn, early evening…
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KCNMA1 encodes the α-subunit of the large conductance, voltage and Ca(2+)-activated (BK) potassium channel and has been reported as a target gene of genomic amplification at 10q22 in prostate cancer. To investigate the prevalence of the amplification in other human cancers, the copy number of KCNMA1 was analyzed by fluorescence-in-situ-hybridization (FISH) in 2,445 tumors across 118 different tumor types. Amplification of KCNMA1 was restricted to a small but distinct fraction of breast, ovarian and endometrial cancer with the highest prevalence in invasive ductal breast cancers and serous carcinoma of ovary and endometrium (3-7%). We performed an extensive analysis on breast cancer tissue microarrays (TMA) of 1,200 tumors linked to prognosis. KCNMA1 amplification was significantly associated with high tumor stage, high grade, high tumor cell proliferation, and poor prognosis. Immunofluorescence revealed moderate or strong KCNMA1 protein expression in 8 out of 9 human breast cancers and in the breast cancer cell line MFM223. KCNMA1-function in breast cancer cell lines was confirmed by whole-cell patch clamp recordings and proliferation assays, using siRNA-knockdown, BK channel activators such as 17ß-estradiol and the BK-channel blocker paxilline. Our findings revealed that enhanced expression of KCNMA1 correlates with and contributes to high proliferation rate and malignancy of breast cancer.