Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.137 [Categoria DeCS]
Referências encontradas : 947 [refinar]
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[PMID]:29017111
[Au] Autor:Lazo P; Steinnes E; Qarri F; Allajbeu S; Kane S; Stafilov T; Frontasyeva MV; Harmens H
[Ad] Endereço:Department of Chemistry, Faculty of Natural Sciences, University of Tirana, Blv. "Zog I", Tirana 1001, Albania. Electronic address: pranveralazo@gmail.com.
[Ti] Título:Origin and spatial distribution of metals in moss samples in Albania: A hotspot of heavy metal contamination in Europe.
[So] Source:Chemosphere;190:337-349, 2018 Jan.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:This study presents the spatial distribution of 37 elements in 48 moss samples collected over the whole territory of Albania and provides information on sources and factors controlling the concentrations of elements in the moss. High variations of trace metals indicate that the concentrations of elements are affected by different factors. Relations between the elements in moss, geochemical interpretation of the data, and secondary effects such as redox conditions generated from local soil and/or long distance atmospheric transport of the pollutants are discussed. Zr normalized data, and the ratios of different elements are calculated to assess the origin of elements present in the current moss samples with respect to different geogenic and anthropogenic inputs. Factor analysis (FA) is used to identify the most probable sources of the elements. Four dominant factors are identified, i.e. natural contamination; dust emission from local mining operations; atmospheric transport of contaminants from local and long distance sources; and contributions from air borne marine salts. Mineral particle dust from local emission sources is classified as the most important factor affecting the atmospheric deposition of elements accumulated in the current moss samples. The open slag dumps of mining operation in Albania is probably the main factor contributing to high contents of Cr, Ni, Fe, Ti and Al in the moss. Enrichment factors (EF) were calculated to clarify whether the elements in the present moss samples mainly originate from atmospheric deposition and/or local substrate materials.
[Mh] Termos MeSH primário: Poluentes Atmosféricos/análise
Briófitas/química
Monitoramento Ambiental/métodos
Metais Pesados/análise
[Mh] Termos MeSH secundário: Albânia
Europa (Continente)
Mineração
Oxirredução
Solo/química
Oligoelementos/análise
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants); 0 (Metals, Heavy); 0 (Soil); 0 (Trace Elements)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180214
[Lr] Data última revisão:
180214
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171011
[St] Status:MEDLINE


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[PMID]:29364602
[Au] Autor:Danilova OV; Belova SE; Gagarinova IV; Dedysh SN
[Ti] Título:Microbial Community Composition and Methanotroph Diversity of a Subarctic Wetland in Russia.
[So] Source:Mikrobiologiia;85(5):545-554, 2016 Sep.
[Is] ISSN:0026-3656
[Cp] País de publicação:Russia (Federation)
[La] Idioma:eng
[Ab] Resumo:This study assessed the microbial diversity, activity, and composition of methane-oxidizing communities of a subarctic wetland in Russia,with mosaic cover of Sphagnum mosses and lichens of the genera Cladonia and Cetraria. Potential methane-oxidizing activity of peat sampled from lichen-dominated wetland sites was higher than that in the sites dominated by Sphagnum mosses. In peat from lichendominated sites, major bacterial groups identified by high-throughput sequencing of the 16S rRNA genes were the Acidobacteria (35.4-41.2% of total 16S rRNA gene reads), Alphaproteobacteria (19.1-24.2%), Gammaproteobacteria (7.9-11.1%), Actinobacteria (5.5-13.2%), Planctomycetes (7.2-9.5%), and Verrucomicrobia (5.1-9.5%). The distinctive feature of this community was high proportion of Subdivision 2 Acidobacteria, which are not char- acteristic for boreal Sphagnum peat bogs. Methanotrophic community composition was determined by mo- lecular analysis of the pmoA gene encoding particulate methane monooxygenase. Most (-80%) of all pmoA gene fragments revealed in peat from lichen-dominated sites belonged to the phylogenetic lineage represented by a microaerobic spiral-shaped methanotroph, "Candidatus Methylospira mobilis." Members of the genus Methylocystis, which are typical inhabitants of boreal Sphagnum peat bogs, represented only a minor group of indigenous methanotrophs. The specific feature of a methanotrophic community in peat from lichen-dominated sites was the presence of uncultivated USCa (Upland Soil Cluster alpha) methanotrophs, which are typical for acidic upland soils showing atmospheric methane oxidation. The methanotrophic community composition in lichen-dominated sites of a tundra wetland, therefore, was markedly different from that in bo- real Sphagnum peat bogs.
[Mh] Termos MeSH primário: Proteínas de Bactérias/genética
Água Subterrânea/microbiologia
Metano/metabolismo
Consórcios Microbianos/fisiologia
Oxigenases/genética
[Mh] Termos MeSH secundário: Acidobacteria/classificação
Acidobacteria/genética
Acidobacteria/isolamento & purificação
Acidobacteria/metabolismo
Actinobacteria/classificação
Actinobacteria/genética
Actinobacteria/isolamento & purificação
Actinobacteria/metabolismo
Alphaproteobacteria/classificação
Alphaproteobacteria/genética
Alphaproteobacteria/isolamento & purificação
Alphaproteobacteria/metabolismo
Regiões Árticas
Proteínas de Bactérias/metabolismo
Briófitas/fisiologia
Gammaproteobacteria/classificação
Gammaproteobacteria/genética
Gammaproteobacteria/isolamento & purificação
Gammaproteobacteria/metabolismo
Expressão Gênica
Líquens/fisiologia
Metano/química
Oxigenases/metabolismo
Filogenia
Planctomycetales/classificação
Planctomycetales/genética
Planctomycetales/isolamento & purificação
Planctomycetales/metabolismo
Federação Russa
Verrucomicrobia/classificação
Verrucomicrobia/genética
Verrucomicrobia/isolamento & purificação
Verrucomicrobia/metabolismo
Zonas Úmidas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Bacterial Proteins); EC 1.13.- (Oxygenases); EC 1.14.13.25 (methane monooxygenase); OP0UW79H66 (Methane)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180208
[Lr] Data última revisão:
180208
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180125
[St] Status:MEDLINE


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[PMID]:29261745
[Au] Autor:Itouga M; Hayatsu M; Sato M; Tsuboi Y; Kato Y; Toyooka K; Suzuki S; Nakatsuka S; Kawakami S; Kikuchi J; Sakakibara H
[Ad] Endereço:RIKEN Center for Sustainable Resource Science, Tsurumi, Yokohama, Japan.
[Ti] Título:Protonema of the moss Funaria hygrometrica can function as a lead (Pb) adsorbent.
[So] Source:PLoS One;12(12):e0189726, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Water contamination by heavy metals from industrial activities is a serious environmental concern. To mitigate heavy metal toxicity and to recover heavy metals for recycling, biomaterials used in phytoremediation and bio-sorbent filtration have recently drawn renewed attention. The filamentous protonemal cells of the moss Funaria hygrometrica can hyperaccumulate lead (Pb) up to 74% of their dry weight when exposed to solutions containing divalent Pb. Energy-dispersive X-ray spectroscopy revealed that Pb is localized to the cell walls, endoplasmic reticulum-like membrane structures, and chloroplast thylakoids, suggesting that multiple Pb retention mechanisms are operating in living F. hygrometrica. The main Pb-accumulating compartment was the cell wall, and prepared cell-wall fractions could also adsorb Pb. Nuclear magnetic resonance analysis showed that polysaccharides composed of polygalacturonic acid and cellulose probably serve as the most effective Pb-binding components. The adsorption abilities were retained throughout a wide range of pH values, and bound Pb was not desorbed under conditions of high ionic strength. In addition, the moss is highly tolerant to Pb. These results suggest that the moss F. hygrometrica could be a useful tool for the mitigation of Pb-toxicity in wastewater.
[Mh] Termos MeSH primário: Briófitas/metabolismo
Chumbo/metabolismo
[Mh] Termos MeSH secundário: Adsorção
Parede Celular/metabolismo
Concentração de Íons de Hidrogênio
Espectroscopia de Ressonância Magnética
Concentração Osmolar
Espectrometria por Raios X
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
2P299V784P (Lead)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180116
[Lr] Data última revisão:
180116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171221
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189726


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[PMID]:29227995
[Au] Autor:Michalska-Hejduk D; Wolski GJ; Harnisch M; Otte A; Bomanowska A; Donath TW
[Ad] Endereço:Department of Geobotany and Plant Ecology, Faculty of Biology and Environmental Protection, University of Lodz, Lodz, Poland.
[Ti] Título:Restoration of floodplain meadows: Effects on the re-establishment of mosses.
[So] Source:PLoS One;12(12):e0187944, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Vascular plants serve as target species for the evaluation of restoration success as they account for most of the plant species diversity and vegetation cover. Although bryophytes contribute considerably to the species diversity of meadows, they are rarely addressed in restoration projects. This project is a first step toward making recommendations for including mosses in alluvial floodplain restoration projects. The opportunity to assess the diversity and ecological requirements of mosses on floodplain meadows presented itself within the framework of a vegetation monitoring that took place in 2014 on meadows located along the northern Upper Rhine. In this area, large-scale meadow restoration projects have taken place since 1997 in both the functional and fossil floodplains. Other studies have shown that bryophytes are generally present in green hay used in restoration, providing inadvertent bryophyte introduction. We compared bryophyte communities in donor and restored communities and correlated these communities with environmental variables-taking into account that the mosses on the restoration sites possibly developed from green hay. This analysis provided insights as to which species of bryophytes should be included in future restoration projects, what diaspores should be used, and how they should be transferred. Data on bryophyte occurrence were gathered from old meadows, and from restoration sites. We found distinct differences in bryophyte composition (based on frequency) in restored communities in functional flood plains compared to donor communities. Generally, restoration sites are still characterized by a lower species-richness, with a significantly lower occurrence of rare and red listed species and a lower species-heterogeneity. In conclusion, our research establishes what mosses predominate in donor and restored alluvial meadows along the northern Upper River, and what microsite conditions favour particular species. This points the way to deliberate introduction of moss diaspores for more complete alluvial meadow restoration.
[Mh] Termos MeSH primário: Briófitas
Conservação dos Recursos Naturais
Zonas Úmidas
[Mh] Termos MeSH secundário: Briófitas/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180104
[Lr] Data última revisão:
180104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171212
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0187944


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[PMID]:29223164
[Au] Autor:Goryunov DV; Logacheva MD; Ignatov MS; Milyutina IA; Fedorova AV; Troitsky AV
[Ad] Endereço:Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119991, Russia. bobr@belozersky.msu.ru.
[Ti] Título:The Mitochondrial Genome of the Moss Brachythecium rivulare (Hypnales, Brachytheciaceae).
[So] Source:Biochemistry (Mosc);82(11):1373-1379, 2017 Nov.
[Is] ISSN:1608-3040
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The mitochondrial genome of the pleurocarpous moss Brachythecium rivulare has been sequenced and annotated. The genome consists of 104,460 base pairs and has approximately the same gene set and organization as other bryophyte mitogenomes. Whole mitochondrial genome comparison between B. rivulare and Physcomitrella patens, Tetraphis pellucida, Anomodon rugelii, and Anomodon attenuatus was performed. The primary cause of bryophyte mitochondrial gene length variation was found to be numerous indels in the introns. Bryophyte mitochondrial gene conservation level was estimated, and it was in a good congruence with the overall phylogeny of bryophytes with the percentage of mitogenome similarity being proportional to the age estimated by phylochronologic analysis. Annotation discrepancies in the analyzed mitogenome sequences were identified. The simple sequence repeat (SSR) content was evaluated, and candidate sites of RNA editing were predicted in the B. rivulare mitochondrial genome.
[Mh] Termos MeSH primário: Briófitas/genética
Genoma Mitocondrial/genética
[Mh] Termos MeSH secundário: Íntrons/genética
Repetições de Microssatélites
Anotação de Sequência Molecular
Edição de RNA
Análise de Sequência de DNA
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180103
[Lr] Data última revisão:
180103
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171211
[St] Status:MEDLINE
[do] DOI:10.1134/S0006297917110153


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[PMID]:28846998
[Au] Autor:Steinhorst L; Kudla J
[Ad] Endereço:Department of Biology, Institute of Plant Biology and Biotechnology, University of Münster, 48149 Münster, Germany.
[Ti] Título:Plant science: Sexual attraction channelled in moss.
[So] Source:Nature;549(7670):35-36, 2017 09 07.
[Is] ISSN:1476-4687
[Cp] País de publicação:England
[La] Idioma:eng
[Mh] Termos MeSH primário: Briófitas/fisiologia
[Pt] Tipo de publicação:NEWS; COMMENT
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170829
[St] Status:MEDLINE
[do] DOI:10.1038/nature23543


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[PMID]:28783339
[Au] Autor:Waterman MJ; Nugraha AS; Hendra R; Ball GE; Robinson SA; Keller PA
[Ti] Título:Antarctic Moss Biflavonoids Show High Antioxidant and Ultraviolet-Screening Activity.
[So] Source:J Nat Prod;80(8):2224-2231, 2017 Aug 25.
[Is] ISSN:1520-6025
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Ceratodon purpureus is a cosmopolitan moss that survives some of the harshest places on Earth: from frozen Antarctica to hot South Australian deserts. In a study on the survival mechanisms of the species, nine compounds were isolated from Australian and Antarctic C. purpureus. This included five biflavonoids, with complete structural elucidation of 1 and 2 reported here for the first time, as well as an additional four known phenolic compounds. Dispersion-corrected DFT calculations suggested a rotational barrier, leading to atropisomerism, resulting in the presence of diastereomers for compound 2. All isolates absorbed strongly in the ultraviolet (UV) spectrum, e.g., biflavone 1 (UV-A, 315-400 nm), which displayed the strongest radical-scavenging activity, 13% more efficient than the standard rutin; p-coumaric acid and trans-ferulic acid showed the highest UV-B (280-315 nm) absorption. The more complex and abundant 1 and 2 presumably have dual roles as both UV-screening and antioxidant compounds. They are strongly bound to Antarctic moss cell walls as well as located inside the cells of moss from both locations. The combined high stability and photoprotective abilities of these isolates may account for the known resilience of this species to UV-B radiation and its survival in some of the toughest locations in the world.
[Mh] Termos MeSH primário: Antioxidantes/farmacologia
Biflavonoides/isolamento & purificação
Biflavonoides/farmacologia
Briófitas/química
Bryopsida/química
Ácidos Cumáricos/química
Fenóis/sangue
[Mh] Termos MeSH secundário: Regiões Antárticas
Antioxidantes/química
Austrália
Biflavonoides/química
Estrutura Molecular
Propionatos
Raios Ultravioleta
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); 0 (Biflavonoids); 0 (Coumaric Acids); 0 (Phenols); 0 (Propionates); AVM951ZWST (ferulic acid); IBS9D1EU3J (trans-3-(4'-hydroxyphenyl)-2-propenoic acid)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170808
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jnatprod.7b00085


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[PMID]:28754574
[Au] Autor:Sato M; Takase T; Yamaguchi K
[Ad] Endereço:Fukushima University, Faculty of Symbolic System Science, 1 Kanayagawa, Fukushima, 960-1248, Japan; Fruit Tree Research Center, Fukushima Agricultural Technology Center, 1 Dannohigashi, Hirano, Iizaka-cho, Fukushima, 960-0231, Japan. Electronic address: satou_mamoru_01@pref.fukushima.lg.jp.
[Ti] Título:Effects of bark washing and epiphytic moss on Cs activity concentration in bark and stemflow in Japanese persimmon (Diospyros kaki Thunb.).
[So] Source:J Environ Radioact;178-179:360-366, 2017 Nov.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The effects of bark washing, and of epiphytic moss growing on the bark surfaces, on the Cs activity concentrations in bark and stemflow samples were evaluated at two Japanese persimmon orchards located in Fukushima City and Date City, both approximately 60-65 km northwest of the Fukushima Dai-ichi nuclear power plant. The means of Cs in stemflow captured by 1 g of sphagnum placed on the main trunks of washed and unwashed trees, and on sites with moss and with no moss growing on bark of the non-washed trees in Date City, were 0.37 Bq, 1.08Bq, 0.77 Bq and 0.52 Bq respectively. The Cs was significantly lower in the washed bark and in the absence of moss at p = 0.00031 and p = 0.0443 by t-test respectively. The Cs in directly-collected stemflow on the main trunks was significantly higher for the unwashed tree at 6.0 Bq L compared with the washed tree at 1.1 Bq L (p = 0.017 by Tukey's test). The extraction rate of dissolved Cs with deionized water was 7.3% even after stirring for 40 h. These results indicate that the moss acts as reservoir of Cs, and that bark-washing decontamination can reduce the additional Cs supply from moss in subsequent years following the radioactive fallout.
[Mh] Termos MeSH primário: Briófitas/química
Radioisótopos de Césio/análise
Acidente Nuclear de Fukushima
Monitoramento de Radiação/métodos
Cinza Radioativa/análise
[Mh] Termos MeSH secundário: Diospyros/química
Japão
Centrais Nucleares
Casca de Planta/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cesium Radioisotopes); 0 (Radioactive Fallout)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171110
[Lr] Data última revisão:
171110
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170730
[St] Status:MEDLINE


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[PMID]:28645091
[Au] Autor:Wattanavatee K; Krmar M; Bhongsuwan T
[Ad] Endereço:Department of Physics, Prince of Songkla University, Hatyai 90112, Thailand.
[Ti] Título:A survey of natural terrestrial and airborne radionuclides in moss samples from the peninsular Thailand.
[So] Source:J Environ Radioact;177:113-127, 2017 Oct.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The aim of this study was to determine the activity concentrations of natural terrestrial radionuclides ( U, Ra, Th and K) and airborne radionuclides ( Pb, Pb and Be) in natural terrestrial mosses. The collected moss samples (46) representing 17 species were collected from 17 sampling localities in the National Parks and Wildlife Sanctuaries of Thailand, situated in the mountainous areas between the northern and the southern ends of peninsular Thailand (∼7-12 °N, 99-102 °E). Activity concentrations of radionuclides in the samples were measured using a low background gamma spectrometer. The results revealed non-uniform spatial distributions of all the radionuclides in the study area. Principal component analysis and cluster analysis revealed two distinct origins for the studied radionuclides, and furthermore, the Pearson correlations were strong within Ra, Th, U and K as well as within Pb and Pb , but there was no significant correlation between these two groups. Also Be was uncorrelated to the others, as expected due to different origins of the airborne and terrestrial radionuclides. The radionuclide activities of moss samples varied by moss species, topography, geology, and meteorology of each sampling area. The observed abnormally high concentrations of some radionuclides probably indicate that the concentrations of airborne and terrestrial radionuclides in moss samples were directly related to local geological features of the sampling site, or that high levels of Be were most probably linked with topography and regional NE monsoonal winds from mainland China.
[Mh] Termos MeSH primário: Radiação de Fundo
Briófitas/química
Monitoramento de Radiação
Radioisótopos/análise
[Mh] Termos MeSH secundário: Tailândia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Radioisotopes)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170908
[Lr] Data última revisão:
170908
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170624
[St] Status:MEDLINE


  10 / 947 MEDLINE  
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[PMID]:28578213
[Au] Autor:Krmar M; Radnovic D; Hansman J; Repic P
[Ad] Endereço:Department of Physics, Faculty of Science, University Novi Sad, Trg Dositaje Obradovica 4, 21000 Novi Sad, Serbia. Electronic address: krmar@df.uns.ac.rs.
[Ti] Título:Influence of broadleaf forest vegetation on atmospheric deposition of airborne radionuclides.
[So] Source:J Environ Radioact;177:32-36, 2017 Oct.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The activities of airborne radionuclides Be and unsupported Pb ( Pb ) were measured in moss samples taken from 17 different locations. The objective was to estimate the influence of the broadleaf forest vegetation on atmospheric deposition of airborne radionuclides attached to aerosols. Two moss samples were collected at each location: within the forest stand (inside the area of the tree canopy projection) and within forest openings (outside the area of the tree canopy projection). Samples were taken in the spring season, before the leaves of trees came forth and in the autumn season, right before fall defoliation. A measurement indicates an absence of variation in Pb concentration, however spring/autumn ratios of Be concentrations in mosses showed the expected seasonal difference in Be deposition. It was also noted that atmospheric deposition of Be at the forest openings was about two times higher than deposition in the forest. Using very simplified models, these measurements can be used to get estimation at how long Be and aerosols can reside on the leaves before precipitation eventually wash it to the ground mosses. It was estimated that the mean residence time of aerosols in the leaves was up to 50 days.
[Mh] Termos MeSH primário: Poluentes Radioativos do Ar/análise
Florestas
Monitoramento de Radiação/métodos
[Mh] Termos MeSH secundário: Atmosfera/química
Briófitas/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Air Pollutants, Radioactive)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170908
[Lr] Data última revisão:
170908
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170605
[St] Status:MEDLINE



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