58 research outputs found
Ulysses: writing the space - the space in writing
A presente tese de doutorado tem como objetivo trazer luz às relações entre pensamento, linguagem, cultura, espaço e tempo na elaboração do romance Ulysses, de James Joyce. O presente trabalho propõe uma leitura desse romance levando em consideração espaço como elemento fundamental na narrativa. A concepção de espaço-tempo revolucionou a física, e influenciou Bakhtin a criar o conceito de Cronotopo, que será usado para analisar algumas configurações de tempo e espaço presentes nesse romance, assim como as concepções de Susan Friedman e Joseph Frank sobre espaço na narrativa literária. A concretude e o nível de detalhes sobre lugares da cidade de Dublin, assim como o uso peculiar que Joyce faz de uma linguagem espacialisada, tornam a narrativa de Ulysses altamente entrelaçada com os aspectos físicos e temporais. O conjunto da experiência humana condensado em um único dia, em uma cidade específica. Para conseguir um apelo universal, Joyce preencheu o texto com múltiplas camadas de referências culturais, especialmente, mas não exclusivamente irlandesas, inglesas, gregas, católicas e judaicas. Essas tendências culturais são usadas para criar sentido em uma complexa rede de simbolismos, referências, associações livres, metáforas, metonímias, elipses e muitos outros recursos linguísticos, vazados em um estilo que muda a cada capítulo: monólogo interior, diálogos, vinhetas, peça de teatro, linguagem jornalística, surrealismo, expressionismo e outros modos narrativos são usados, fazendo com que o espaço do texto e o espaço da cidade de Dublin, onde os personagens se movem, tenham uma relação inédita no gênero. Eles habitam o texto como habitam a cidade. Seus pensamentos interiores, desejos e sentimentos são mostrados no espaço do texto, que conecta os espaços psicológicos com os espaços físico e cultural. A narrativa de Joyce parece complexa porque ela tece essas conexões pacientemente, com uma profusão de detalhes, fazendo com que uma segunda ou terceira leitura sejam obrigatórias para um melhor entendimento.The present dissertation aims at shedding some light on the relations between thought, language, culture, space and time in the elaboration of the novel Ulysses, by James Joyce. This work proposes a reading of that novel taking into consideration space as a fundamental element in its narrative. The conception of spacetime revolutionised Physics, and influenced Bakhtin to create the concept of Chronotope, which will be used to analyse some configurations of time and space present in the novel, as well as the conceptions of Susan Friedman and Joseph Frank about space in the literary narrative. The concreteness and the level of detail about the places in the city of Dublin, as well as Joyce’s peculiar usage of a spatialised language, make the narrative of Ulysses greatly intertwined with the physical and temporal aspects. The whole of human experience condensed on a single day, in one specific city. To achieve a universal appeal, Joyce filled the text with multiple layers of cultural references, especially but not exclusively Irish, English, Greek, Catholic and Jewish. Those cultural trends are used to create meaning in a complex net of symbolisms, references, free associations, metaphors, metonymies, ellipses, and many other linguistic resources, rendered in a style which changes at each chapter: interior monologue, dialogues, vignettes, theatre play, journalistic language, surrealism, expressionism and other narrative modes are used, making the space of the text and the space of the city of Dublin, where the characters move, have a relationship which is unprecedented in the genre. They inhabit the text as they inhabit the city. Their inner thoughts, desires and feelings are shown in the space of the text, which connects the psychological spaces to the physical and cultural spaces. Joyce’s narrative seems to be complex because he weaves those connections patiently, with a profusion of detail, making a second or third reading mandatory for a better understanding
Marçal Aquino. Baixo Esplendor. São Paulo: Companhia das Letras, 2020. 259p. : ISBN: 978-65-5921-029-9
The New Zealand Kauri (Agathis Australis) Research Project: A Radiocarbon Dating Intercomparison of Younger Dryas Wood and Implications for IntCal13
We describe here the New Zealand kauri (Agathis australis) Younger Dryas (YD) research project, which aims to undertake Δ14C analysis of ~140 decadal floating wood samples spanning the time interval ~13.1–11.7 kyr cal BP. We report 14C intercomparison measurements being undertaken by the carbon dating laboratories at University of Waikato (Wk), University of California at Irvine (UCI), and University of Oxford (OxA). The Wk, UCI, and OxA laboratories show very good agreement with an interlaboratory comparison of 12 successive decadal kauri samples (average offsets from consensus values of –7 to +4 14C yr). A University of Waikato/University of Heidelberg (HD) intercomparison involving measurement of the YD-age Swiss larch tree Ollon505, shows a HD/Wk offset of ~10–20 14C yr (HD younger), and strong evidence that the positioning of the Ollon505 series is incorrect, with a recommendation that the 14C analyses be removed from the IntCal calibration database
Decadally resolved lateglacial radiocarbon evidence from New Zealand kauri
Author Posting. © The Author(s), 2016. This is the author's version of the work. It is posted here by permission of Arizona Board of Regents on behalf of the University of Arizona for personal use, not for redistribution. The definitive version was published in Radiocarbon 58 (2016): 709-733, doi: 10.1017/RDC.2016.86.The Last Glacial-Interglacial Transition (LGIT; 15,000-11,000 cal BP) was
characterized by complex spatiotemporal patterns of climate change, with
numerous studies requiring accurate chronological control to decipher leads
from lags in global paleoclimatic, -environmental and archaeological records.
However, close scrutiny of the few available tree-ring chronologies and 14C-dated
sequences composing the IntCal13 radiocarbon calibration curve, indicates
significant weakness in 14C calibration across key periods of the LGIT. Here, we
present a decadally-resolved atmospheric 14C record derived from New Zealand
kauri spanning the Lateglacial from ~13,100 - 11,365 cal BP. Two floating kauri
14C time series, curve-matched to IntCal13, serve as a radiocarbon backbone
through the Younger Dryas. The floating Northern Hemisphere (NH) 14C datasets
derived from the YD-B and Central European Lateglacial Master tree-ring series
are matched against the new kauri data, forming a robust NH 14C time series to
~14,200 cal BP. Our results show that IntCal13 is questionable from ~12,200 -
11,900 cal BP and the ~10,400 BP 14C plateau is approximately five decades too short. The new kauri record and re-positioned NH pine 14C series offer a
refinement of the international 14C calibration curves IntCal13 and SHCal13,
providing increased confidence in the correlation of global paleorecords.This work was part funded by the Foundation for
Research, Science and Technology (FRST)—now Ministry for Business,
Innovation & Employment (MBIE)-PROP-20224-SFK-UOA), a Royal Society of
New Zealand grant, the Australian Research Council (FL100100195 and
DP0664898) and the Natural Environment Research Council (NE/H009922/1,
NE/I007660/1, NER/A/S/2001/01037 and NE/H007865/1)
Childhood socioeconomic position and objectively measured physical capability levels in adulthood: a systematic review and meta-analysis
<p><b>Background:</b> Grip strength, walking speed, chair rising and standing balance time are objective measures of physical capability that characterise current health and predict survival in older populations. Socioeconomic position (SEP) in childhood may influence the peak level of physical capability achieved in early adulthood, thereby affecting levels in later adulthood. We have undertaken a systematic review with meta-analyses to test the hypothesis that adverse childhood SEP is associated with lower levels of objectively measured physical capability in adulthood.</p>
<p><b>Methods and Findings:</b> Relevant studies published by May 2010 were identified through literature searches using EMBASE and MEDLINE. Unpublished results were obtained from study investigators. Results were provided by all study investigators in a standard format and pooled using random-effects meta-analyses. 19 studies were included in the review. Total sample sizes in meta-analyses ranged from N = 17,215 for chair rise time to N = 1,061,855 for grip strength. Although heterogeneity was detected, there was consistent evidence in age adjusted models that lower childhood SEP was associated with modest reductions in physical capability levels in adulthood: comparing the lowest with the highest childhood SEP there was a reduction in grip strength of 0.13 standard deviations (95% CI: 0.06, 0.21), a reduction in mean walking speed of 0.07 m/s (0.05, 0.10), an increase in mean chair rise time of 6% (4%, 8%) and an odds ratio of an inability to balance for 5s of 1.26 (1.02, 1.55). Adjustment for the potential mediating factors, adult SEP and body size attenuated associations greatly. However, despite this attenuation, for walking speed and chair rise time, there was still evidence of moderate associations.</p>
<p><b>Conclusions:</b> Policies targeting socioeconomic inequalities in childhood may have additional benefits in promoting the maintenance of independence in later life.</p>
Punctuated shutdown of Atlantic Meridional Overturning circulation during Greenland Stadial 1
The Greenland Stadial 1 (GS-1; ~12.9 to 11.65 kyr cal BP) was a period of North Atlantic cooling, thought to have been initiated by North America fresh water runof that caused a sustained reduction of North Atlantic Meridional Overturning Circulation (AMOC), resulting in an antiphase temperature response between the hemispheres (the ‘bipolar seesaw’). Here we exploit sub-fossil New Zealand kauri trees to report the frst securely dated, decadally-resolved atmospheric radiocarbon (¹⁴C) record spanning GS-1. By precisely aligning Southern and Northern Hemisphere tree-ring ¹⁴C records with marine ¹⁴C sequences we document two relatively short periods of AMOC collapse during the stadial, at ~12,920-12,640 cal BP and 12,050-11,900 cal BP. In addition, our data show that the interhemispheric atmospheric ¹⁴C ofset was close to zero prior to GS-1, before reaching ‘near-modern’ values at ~12,660 cal BP, consistent with synchronous recovery of overturning in both hemispheres and increased Southern Ocean ventilation. Hence, sustained North Atlantic cooling across GS-1 was not driven by a prolonged AMOC reduction but probably due to an equatorward migration of the Polar Front, reducing the advection of southwesterly air masses to high latitudes. Our fndings suggest opposing hemispheric temperature trends were driven by atmospheric teleconnections, rather than AMOC changes
Myoglobin-biomimetic electroactive materials made by surface molecular imprinting on silica beads and their use as ionophores in polymeric membranes for potentiometric transduction
Albiglutide and cardiovascular outcomes in patients with type 2 diabetes and cardiovascular disease (Harmony Outcomes): a double-blind, randomised placebo-controlled trial
Background:
Glucagon-like peptide 1 receptor agonists differ in chemical structure, duration of action, and in their effects on clinical outcomes. The cardiovascular effects of once-weekly albiglutide in type 2 diabetes are unknown. We aimed to determine the safety and efficacy of albiglutide in preventing cardiovascular death, myocardial infarction, or stroke.
Methods:
We did a double-blind, randomised, placebo-controlled trial in 610 sites across 28 countries. We randomly assigned patients aged 40 years and older with type 2 diabetes and cardiovascular disease (at a 1:1 ratio) to groups that either received a subcutaneous injection of albiglutide (30–50 mg, based on glycaemic response and tolerability) or of a matched volume of placebo once a week, in addition to their standard care. Investigators used an interactive voice or web response system to obtain treatment assignment, and patients and all study investigators were masked to their treatment allocation. We hypothesised that albiglutide would be non-inferior to placebo for the primary outcome of the first occurrence of cardiovascular death, myocardial infarction, or stroke, which was assessed in the intention-to-treat population. If non-inferiority was confirmed by an upper limit of the 95% CI for a hazard ratio of less than 1·30, closed testing for superiority was prespecified. This study is registered with ClinicalTrials.gov, number NCT02465515.
Findings:
Patients were screened between July 1, 2015, and Nov 24, 2016. 10 793 patients were screened and 9463 participants were enrolled and randomly assigned to groups: 4731 patients were assigned to receive albiglutide and 4732 patients to receive placebo. On Nov 8, 2017, it was determined that 611 primary endpoints and a median follow-up of at least 1·5 years had accrued, and participants returned for a final visit and discontinuation from study treatment; the last patient visit was on March 12, 2018. These 9463 patients, the intention-to-treat population, were evaluated for a median duration of 1·6 years and were assessed for the primary outcome. The primary composite outcome occurred in 338 (7%) of 4731 patients at an incidence rate of 4·6 events per 100 person-years in the albiglutide group and in 428 (9%) of 4732 patients at an incidence rate of 5·9 events per 100 person-years in the placebo group (hazard ratio 0·78, 95% CI 0·68–0·90), which indicated that albiglutide was superior to placebo (p<0·0001 for non-inferiority; p=0·0006 for superiority). The incidence of acute pancreatitis (ten patients in the albiglutide group and seven patients in the placebo group), pancreatic cancer (six patients in the albiglutide group and five patients in the placebo group), medullary thyroid carcinoma (zero patients in both groups), and other serious adverse events did not differ between the two groups. There were three (<1%) deaths in the placebo group that were assessed by investigators, who were masked to study drug assignment, to be treatment-related and two (<1%) deaths in the albiglutide group.
Interpretation:
In patients with type 2 diabetes and cardiovascular disease, albiglutide was superior to placebo with respect to major adverse cardiovascular events. Evidence-based glucagon-like peptide 1 receptor agonists should therefore be considered as part of a comprehensive strategy to reduce the risk of cardiovascular events in patients with type 2 diabetes.
Funding:
GlaxoSmithKline
Consistent patterns of common species across tropical tree communities
Trees structure the Earth’s most biodiverse ecosystem, tropical forests. The vast number of tree species presents a formidable challenge to understanding these forests, including their response to environmental change, as very little is known about most tropical tree species. A focus on the common species may circumvent this challenge. Here we investigate abundance patterns of common tree species using inventory data on 1,003,805 trees with trunk diameters of at least 10 cm across 1,568 locations1,2,3,4,5,6 in closed-canopy, structurally intact old-growth tropical forests in Africa, Amazonia and Southeast Asia. We estimate that 2.2%, 2.2% and 2.3% of species comprise 50% of the tropical trees in these regions, respectively. Extrapolating across all closed-canopy tropical forests, we estimate that just 1,053 species comprise half of Earth’s 800 billion tropical trees with trunk diameters of at least 10 cm. Despite differing biogeographic, climatic and anthropogenic histories7, we find notably consistent patterns of common species and species abundance distributions across the continents. This suggests that fundamental mechanisms of tree community assembly may apply to all tropical forests. Resampling analyses show that the most common species are likely to belong to a manageable list of known species, enabling targeted efforts to understand their ecology. Although they do not detract from the importance of rare species, our results open new opportunities to understand the world’s most diverse forests, including modelling their response to environmental change, by focusing on the common species that constitute the majority of their trees.Publisher PDFPeer reviewe
Atrasentan and renal events in patients with type 2 diabetes and chronic kidney disease (SONAR): a double-blind, randomised, placebo-controlled trial
Background: Short-term treatment for people with type 2 diabetes using a low dose of the selective endothelin A receptor antagonist atrasentan reduces albuminuria without causing significant sodium retention. We report the long-term effects of treatment with atrasentan on major renal outcomes. Methods: We did this double-blind, randomised, placebo-controlled trial at 689 sites in 41 countries. We enrolled adults aged 18–85 years with type 2 diabetes, estimated glomerular filtration rate (eGFR)25–75 mL/min per 1·73 m 2 of body surface area, and a urine albumin-to-creatinine ratio (UACR)of 300–5000 mg/g who had received maximum labelled or tolerated renin–angiotensin system inhibition for at least 4 weeks. Participants were given atrasentan 0·75 mg orally daily during an enrichment period before random group assignment. Those with a UACR decrease of at least 30% with no substantial fluid retention during the enrichment period (responders)were included in the double-blind treatment period. Responders were randomly assigned to receive either atrasentan 0·75 mg orally daily or placebo. All patients and investigators were masked to treatment assignment. The primary endpoint was a composite of doubling of serum creatinine (sustained for ≥30 days)or end-stage kidney disease (eGFR <15 mL/min per 1·73 m 2 sustained for ≥90 days, chronic dialysis for ≥90 days, kidney transplantation, or death from kidney failure)in the intention-to-treat population of all responders. Safety was assessed in all patients who received at least one dose of their assigned study treatment. The study is registered with ClinicalTrials.gov, number NCT01858532. Findings: Between May 17, 2013, and July 13, 2017, 11 087 patients were screened; 5117 entered the enrichment period, and 4711 completed the enrichment period. Of these, 2648 patients were responders and were randomly assigned to the atrasentan group (n=1325)or placebo group (n=1323). Median follow-up was 2·2 years (IQR 1·4–2·9). 79 (6·0%)of 1325 patients in the atrasentan group and 105 (7·9%)of 1323 in the placebo group had a primary composite renal endpoint event (hazard ratio [HR]0·65 [95% CI 0·49–0·88]; p=0·0047). Fluid retention and anaemia adverse events, which have been previously attributed to endothelin receptor antagonists, were more frequent in the atrasentan group than in the placebo group. Hospital admission for heart failure occurred in 47 (3·5%)of 1325 patients in the atrasentan group and 34 (2·6%)of 1323 patients in the placebo group (HR 1·33 [95% CI 0·85–2·07]; p=0·208). 58 (4·4%)patients in the atrasentan group and 52 (3·9%)in the placebo group died (HR 1·09 [95% CI 0·75–1·59]; p=0·65). Interpretation: Atrasentan reduced the risk of renal events in patients with diabetes and chronic kidney disease who were selected to optimise efficacy and safety. These data support a potential role for selective endothelin receptor antagonists in protecting renal function in patients with type 2 diabetes at high risk of developing end-stage kidney disease. Funding: AbbVie
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