Search Results - "R Bittencourt"
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Small and slow is safe: On the drought tolerance of tropical tree species
Published in Global change biology (01-04-2022)“…Understanding how evolutionary history and the coordination between trait trade‐off axes shape the drought tolerance of trees is crucial to predict forest…”
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Embolism resistance drives the distribution of Amazonian rainforest tree species along hydro-topographic gradients
Published in The New phytologist (01-02-2019)“…• Species distribution is strongly driven by local and global gradients in water availability but the underlying mechanisms are not clear. Vulnerability to…”
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A hybrid material as a sorbent phase for the disposable pipette extraction technique enhances efficiency in the determination of phenolic endocrine-disrupting compounds
Published in Journal of Chromatography A (01-09-2017)“…•A hybrid material is proposed as a new sorbent phase for the DPX technique.•Phenolic endocrine disruptor compounds were determined using the new sorbent.•The…”
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Non-structural carbohydrates mediate seasonal water stress across Amazon forests
Published in Nature communications (19-04-2021)“…Non-structural carbohydrates (NSC) are major substrates for plant metabolism and have been implicated in mediating drought-induced tree mortality. Despite…”
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Amazonia trees have limited capacity to acclimate plant hydraulic properties in response to long‐term drought
Published in Global change biology (01-06-2020)“…The fate of tropical forests under future climate change is dependent on the capacity of their trees to adjust to drier conditions. The capacity of trees to…”
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hydroclimatic and ecophysiological basis of cloud forest distributions under current and projected climates
Published in Annals of botany (01-05-2014)“…BackgroundTropical montane cloud forests (TMCFs) are characterized by a unique set of biological and hydroclimatic features, including frequent and/or…”
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Plant pneumatics: stem air flow is related to embolism – new perspectives on methods in plant hydraulics
Published in The New phytologist (01-07-2016)“…Wood contains a large amount of air, even in functional xylem. Air embolisms in the xylem affect water transport and can determine plant growth and survival…”
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Convergent evolution of tree hydraulic traits in Amazonian habitats: implications for community assemblage and vulnerability to drought
Published in The New phytologist (01-10-2020)“…• Amazonian droughts are increasing in frequency and severity. However, little is known about how this may influence species-specific vulnerability to drought…”
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Association between uric acid levels and obstructive sleep apnea syndrome in a large epidemiological sample
Published in PloS one (24-06-2013)“…Recurrent hypoxia, which is associated with obstructive sleep apnea syndrome (OSAS), leads to an increase in the degradation of adenosine triphosphatase into…”
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10
Unitarity of Singh-Hagen Model in D Dimensions
Published in Advances in high energy physics (2020)“…The particle content of the Singh-Hagen model (SH) in D dimensions is revisited. We suggest a complete set of spin-projection operators acting on totally…”
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Differential nutrient limitation and tree height control leaf physiology, supporting niche partitioning in tropical dipterocarp forests
Published in Functional ecology (01-08-2022)“…Revealing the mechanisms of environmental niche partitioning within lowland tropical forests is important for understanding the drivers of current species…”
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Short-term Results of the Masking Effect of an Infiltrant Resin on Mild Molar Incisor Hypomineralization Lesions in Anterior Teeth
Published in Operative dentistry (01-01-2024)“…This non-controlled clinical study evaluated the masking effect of an infiltrant resin on mild molar incisor hypomineralization (MIH) lesions. Thirty…”
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A new diagnostic strategy which uses a luminol-H2O2 system to detect helminth eggs in fecal sediments processed by the Helmintex method
Published in PLoS neglected tropical diseases (01-07-2020)“…Schistosomiasis remains a serious public health problem in tropical regions, affecting more than 250 million people. Sensitive diagnostic methods represent key…”
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14
Oleic Acid Esterification Catalyzed by Zeolite Y-Model of the Biomass Conversion
Published in Topics in catalysis (01-09-2019)“…Residual oils and fats are promising renewable sources for the production of liquid fuels and the synthesis of various chemicals with significant life cycle…”
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Effect of Different Computer-aided Design/Computer-aided Manufacturing (CAD/CAM) Materials and Thicknesses on the Fracture Resistance of Occlusal Veneers
Published in Operative dentistry (01-09-2018)“…The aim was to evaluate, in vitro, the influence of different computer-aided design/computer-aided manufacturing (CAD/CAM) materials (IPS e.max CAD, Vita…”
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Small tropical forest trees have a greater capacity to adjust carbon metabolism to long‐term drought than large canopy trees
Published in Plant, cell and environment (01-10-2020)“…The response of small understory trees to long‐term drought is vital in determining the future composition, carbon stocks and dynamics of tropical forests…”
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Validation of a Portable Monitoring System for the Diagnosis of Obstructive Sleep Apnea Syndrome
Published in Sleep (New York, N.Y.) (01-05-2009)“…To evaluate if a portable monitor could accurately measure the apnea-hypopnea index (AHI) in patients with a suspicion of obstructive sleep apnea (OSA)…”
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Lignin composition is related to xylem embolism resistance and leaf life span in trees in a tropical semiarid climate
Published in The New phytologist (01-09-2018)“…Wood properties influence the leaf life span (LL) of tree crowns. As lignin is an important component of wood and the water transport system, we investigated…”
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Factors associated with adherence to antiretroviral therapy in HIV-infected subjects and the use of indicators to characterize the treatment adhesion profile
Published in Brazilian journal of medical and biological research (01-01-2023)“…At present, there is no gold standard to assess patient adherence to combination antiretroviral therapy (cART). Therefore, this study aimed to characterize the…”
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Xylem hydraulic safety and construction costs determine tropical tree growth
Published in Plant, cell and environment (01-03-2018)“…Faster growth in tropical trees is usually associated with higher mortality rates, but the mechanisms underlying this relationship are poorly understood. In…”
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