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29 resultados encontrados.

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Mercury enrichment and Hg isotopes in Cretaceous-Paleogene boundary successions: Links to volcanism and palaeoenvironmental impacts
Artículo
Material complementario disponible Artículo CONICET Digital
Mercury enrichment and Hg isotopes in Cretaceous-Paleogene boundary successions: Links to volcanism and palaeoenvironmental impacts
Sial, A. N. et al · Academic Press Ltd - Elsevier Science Ltd · 2016 · ISSN 0195-6671
We investigate the use of Hg as a proxy for volcanism by studying four distal and two proximal sections in relation to the Deccan volcanic center, straddling the Cretaceous-Paleogene (KPg) boundary at (a) Højerup (Denma...
Idioma eng
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A first evaluation on the use of Ardea albus feathers as bioindicators of mercury burden in Amazonian ecosystems Avaliação preliminar do uso de penas de Ardea albus como bioindicadoras de mercúrio em ecossistemas amazônicos
Artículo
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A first evaluation on the use of Ardea albus feathers as bioindicators of mercury burden in Amazonian ecosystems Avaliação preliminar do uso de penas de Ardea albus como bioindicadoras de mercúrio em ecossistemas amazônicos
Andreza Lourdes Gomes et al · Instituto Nacional de Pesquisas da Amazônia · 2009 · ISSN 0044-5967
We evaluated in this study the total mercury concentration in feathers of Ardea albus collected in a colony located in the city of Belem-PA, Brazil in a prospective trial for its use as bioindicators of mercury burden in...
LCC LCC:Science (General)Idioma eng
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Anthropogenic short-lived halogens increase human exposure to mercury contamination due to enhanced mercury oxidation over continents
Artículo
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Anthropogenic short-lived halogens increase human exposure to mercury contamination due to enhanced mercury oxidation over continents
Fu, Xiao et al · National Academy of Sciences · 2024 · ISSN 0027-8424
Mercury (Hg) is a contaminant of global concern, and an accurate understanding of its atmospheric fate is needed to assess its risks to humans and ecosystem health. Atmospheric oxidation of Hg is key to the deposition of...
Idioma eng
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Contaminação por mercúrio em ecossistemas aquáticos: uma análise das áreas críticas Mercury contamination in aquatic ecosystems: an analysis of the critical areas
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Contaminação por mercúrio em ecossistemas aquáticos: uma análise das áreas críticas Mercury contamination in aquatic ecosystems: an analysis of the critical areas
Luiz Drude de Lacerda et al · Universidade de São Paulo · 2008 · ISSN 0103-4014
O processo de contaminação por mercúrio em ecossistemas aquáticos é discutido, levando-se em consideração as características biogeoquímicas atuantes nesses sistemas que resultam em uma maior mobilização e biod...
LCC TENDOlNvY2lhbCBzY2llbmNlcyAoR2VuZXJhbCk~Idioma eng
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High levels of Mercury and Lead detected by hair analysis in two Venezuelan environments Altos níveis de Mercúrio e Chumbo detectados pela análise de cabelo em dois ambientes venezuelanos
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High levels of Mercury and Lead detected by hair analysis in two Venezuelan environments Altos níveis de Mercúrio e Chumbo detectados pela análise de cabelo em dois ambientes venezuelanos
Eunice Marcano et al · Instituto Nacional de Pesquisas da Amazônia · 2009 · ISSN 0044-5967
Mercury and Lead concentrations obtained by ICP-OAS analysis of human hair from riverside communities along the Orinoco river in the Amazon state (Venezuela) were compared with those from Caracas, Venezuela. Taking into ...
LCC LCC:Science (General)Idioma eng
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Incorporation of inorganic mercury (Hg2+) in pelagic food webs of ultraoligotrophic and oligotrophic lakes: The role of different plankton size fractions and species assemblages
Artículo
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Incorporation of inorganic mercury (Hg2+) in pelagic food webs of ultraoligotrophic and oligotrophic lakes: The role of different plankton size fractions and species assemblages
Soto Cárdenas, Estela Carolina et al · Elsevier Science · 2014 · ISSN 0048-9697
In lake food webs, pelagic basal organisms such as bacteria and phytoplankton incorporate mercury (Hg2+) from the dissolved phase and pass the adsorbed and internalized Hg to higher trophic levels. This experimental inve...
Idioma eng
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Separation and preconcentration of inorganic and organomercury species in water samples using a selective reagent and an anion exchange resin and determination by flow injection-cold vapor atomic absorption spectrometry
Artículo
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Separation and preconcentration of inorganic and organomercury species in water samples using a selective reagent and an anion exchange resin and determination by flow injection-cold vapor atomic absorption spectrometry
Altamirano, Jorgelina Cecilia et al · Royal Society of Chemistry · 2002 · ISSN 0267-9477
An on-line inorganic (InHg) and organomercury (OrHg) species separation, preconcentration and determination system consisting of cold vapor atomic absorption spectrometry (CV-AAS) coupled to a flow injection (FI) method ...
Idioma eng
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Source and trophic transfer of mercury in plankton from an ultraoligotrophic lacustrine system (Lake Nahuel Huapi, North Patagonia)
Artículo
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Source and trophic transfer of mercury in plankton from an ultraoligotrophic lacustrine system (Lake Nahuel Huapi, North Patagonia)
Rizzo, Andrea Paula et al · Springer · 2014 · ISSN 1184-1194
The incorporation and trophic transfer of total and methyl mercury (THg, MeHg) were examined in three size classes of plankton (10–53, 53–200, and >200 μm size range) and a small planktivorous fish, Galaxias maculat...
Idioma eng
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The behavior of selenium and mercury in cultured fish-VII
Artículo
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The behavior of selenium and mercury in cultured fish-VII
Norihisa Kai et al · Society for Science and Technology · 2012 · ISSN 2186-4942
Both mercury and selenium distribution in the ordinary muscle of Japanese scad (Decapterus maruadsi), preserved under a fasting environment, was investigated in order to clarify the influence of fasting, which is general...
LCC LCC:Technology (General)Idioma eng
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The influence of mercury vapor on the electrical resistance of chalcogenide amorphous films
Artículo
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The influence of mercury vapor on the electrical resistance of chalcogenide amorphous films
V.M. Rubish et al · Vasyl Stefanyk Carpathian National University · 2023 · ISSN 1729-4428
Using the planar structures "Ni layer - chalcogenide amorphous film - Ni layer" and "graphite probe - chalcogenide amorphous film graphite probe" samples, the influence of mercury vapor on the electrical resistance of am...
LCC TENDOlBoeXNpY3M~Idioma eng
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Solvent-controlled synthesis of nitrogen-doped carbon dots from mangosteen peel extract and application in the detection of mercury ions
Artículo
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Solvent-controlled synthesis of nitrogen-doped carbon dots from mangosteen peel extract and application in the detection of mercury ions
Jiramet Mekarun et al · KeAi Communications Co., Ltd · 2026 · ISSN 2772-4433
Heavy metal contamination poses serious environmental and health risks, even at trace levels, highlighting the need for efficient and sustainable detection strategies. This study presents a green approach for producing n...
LCC TENDOkNoZW1pY2FsIHRlY2hub2xvZ3k~Idioma eng
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Kinetics and mechanism of complex formation of a pendant arm macrocycle reacting with copper(II) and mercury(II)
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Kinetics and mechanism of complex formation of a pendant arm macrocycle reacting with copper(II) and mercury(II)
Mansour M. Hassan · Springer · 2009 · ISSN 1319-6103
Abstract Stopped flow spectrophotometry was used to study the complexation kinetics of the N-pendant arm macrocycle: N,N′,N″,N‴-tetrakis (2-carbamoylethyl)-1,4,8,11-tetraazacyclotetradecane (TCEC = L) reacting with...
LCC TENDOkNoZW1pc3RyeQ~~Idioma eng
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Choropampa case: mercury spilland damage to health in rural exppsed population
Revista
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Choropampa case: mercury spilland damage to health in rural exppsed population
Arana-Zegarra, Marco · Instituto Nacional de Salud · 2009
El año 2000, un derrame de mercurio metálico que se evaporó en el ambiente, afectó la salud de más de mil campesinos, quienes, ocho años después, siguen sufriendo las consecuencias en su salud. La minería moderna...
Idioma spa
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Crustal recycling and metamorphic dehydration govern the fertility of granite-associated tin systems
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Crustal recycling and metamorphic dehydration govern the fertility of granite-associated tin systems
Xiang Sun et al · Nature Portfolio · 2026 · ISSN 2662-4435
Abstract Tin is a critical metal predominantly sourced from granite-associated deposits linked to anatexis of metasedimentary rocks and extreme magmatic differentiation. However, how metamorphism of sedimentary protolith...
LCC TENDOkdlb2xvZ3k~; TENDOkVudmlyb25tZW50YWwgc2NpZW5jZXM~Idioma eng
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Diagnosis of Local Isolates of Yeast Saccharomyces cerevisiae by Biochemical Methods
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Diagnosis of Local Isolates of Yeast Saccharomyces cerevisiae by Biochemical Methods
Haitham Aljader et al · University of Mosul, College of Education for Pure Science · 2021 · ISSN 1812-125X
Abstract In this study 10 local isolates of yeast Saccharomyces were obtained from the local markets of Mosul .The Isolates were diagnosed by morphological and cultural characters in addition to biochemical tests. the re...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Forum on Rahul Rao’s Out of Time, Part III: Hopeful Lines? – Method and Style
Artículo
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Forum on Rahul Rao’s Out of Time, Part III: Hopeful Lines? – Method and Style
Laleh Khalili et al · Pontifícia Universidade Católica do Rio de Janeiro, Instituto de Relações Internacionais · 2023 · ISSN 1982-0240
Abstract In this Forum, six scholars reflect on Rahul Rao’s recent book Out of Time: The Queer Politics of Postcoloniality from other geographies, themes and radical possibilities. Part III explores the way Out of Tim...
LCC LCC:International relationsIdioma eng
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Genomic Characterization Reveals Infections and Silent Dissemination of Carbapenemase-Producing Klebsiella Oxytoca Complex Associated with ST2 Lineage in a Hospital Setting
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Genomic Characterization Reveals Infections and Silent Dissemination of Carbapenemase-Producing Klebsiella Oxytoca Complex Associated with ST2 Lineage in a Hospital Setting
Alvarez, Verónica Elizabeth et al · Springer · 2025 · ISSN 0343-8651
Our aim was to investigate lineages and resistome of carbapenemase-producing Klebsiella oxytoca Complex (KoC) strains isolated from 2019 to 2022 from colonization and infection samples to evaluate their potential dissemi...
Idioma eng
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Herglotz-type f(R, T) gravity
Artículo
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Herglotz-type f(R, T) gravity
Marek Wazny et al · SpringerOpen · 2026 · ISSN 1434-6052
Abstract The non-conservation of the energy-momentum tensor in f(R, T) gravity can be interpreted as an effective manifestation of dissipation. Motivated by this, we propose a new formulation of f(R, T) gravity based o...
LCC TENDOkFzdHJvcGh5c2ljcw~~; TENDOk51Y2xlYXIgYW5kIHBhcnRpY2xlIHBoeXNpY3MuIEF0b21pYyBlbmVyZ3kuIFJhZGlvYWN0aXZpdHk~Idioma eng
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Incorporating alkali-catalyzed nano-silica sol to enhance the durability of sodium carbonate-activated slag mortar in aggressive environments
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Incorporating alkali-catalyzed nano-silica sol to enhance the durability of sodium carbonate-activated slag mortar in aggressive environments
Xiaoyan Zheng et al · Nature Portfolio · 2026 · ISSN 2397-2106
Abstract Sodium carbonate-activated slag mortar (SCASM) exhibits the advantages of low shrinkage, high strength in late age, and low-cost and carbon emissions. However, its microstructure is relatively porous due to the ...
LCC LCC:Materials of engineering and construction. Mechanics of materialsIdioma eng
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Influence of in-situ polymerization on the performance of cement grouts with high recycled AAC powder content: A multi-technique hydration and mechanical modification study
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Influence of in-situ polymerization on the performance of cement grouts with high recycled AAC powder content: A multi-technique hydration and mechanical modification study
Guoqiang Li et al · Elsevier · 2026 · ISSN 2214-5095
Recycling of construction waste is essential for sustainable cement-based materials, yet the variable composition of recycled autoclaved aerated concrete (AAC) powder pose significant challenges when used in grouting app...
LCC LCC:Materials of engineering and construction. Mechanics of materialsIdioma eng
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Isolation and Diagnosis of Rhizobium Bacteria Isolated from The Root Nodules of Leguminous Plants and Studying Their Plasmid Content.
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Isolation and Diagnosis of Rhizobium Bacteria Isolated from The Root Nodules of Leguminous Plants and Studying Their Plasmid Content.
Wissam Alubidy et al · University of Mosul, College of Education for Pure Science · 2021 · ISSN 1812-125X
Abstract The study included thirty-six isolates of rhizobia bacteria were isolated from the nodules located on the roots of nine types of leguminous family plants that were planted in four areas of the city of Mosul for ...
LCC TENDOkVkdWNhdGlvbg~~; LCC:Science (General)Idioma eng
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Photochemical Synthesis of the Bioconjugate Folic Acid-Gold Nanoparticles
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Photochemical Synthesis of the Bioconjugate Folic Acid-Gold Nanoparticles
John Castillo et al · SAGE Publishing · 2013 · ISSN 1847-9804
In this paper we present a rapid and simple onepot method to obtain gold nanoparticles functionalized with folic acid using a photochemistry method. The bioconjugate folic acid-gold nanoparticle was generated in one step...
LCC LCC:Materials of engineering and construction. Mechanics of materials; TENDOlRlY2hub2xvZ3k~Idioma eng
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Pore structure evolution model of shale reservoir under different fluid pressures: a case study of Wufeng-Longmaxi Formation, SW China
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Pore structure evolution model of shale reservoir under different fluid pressures: a case study of Wufeng-Longmaxi Formation, SW China
Sun Yue et al · De Gruyter · 2026 · ISSN 2391-5447
Multiple studies had been conducted to improve the geological understanding and enrichment patterns of the Wufeng-Longmaxi Formation in the southeastern Sichuan Basin’s complex tectonic belt. However, the influence of ...
LCC TENDOkdlb2xvZ3k~Idioma eng
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