Bibliografías temáticas / Sedimento de rua

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Literatura académica sobre el tema "Sedimento de rua"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 8 de febrero de 2022

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Artículos de revistas sobre el tema "Sedimento de rua"

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Miura, Takayuki, Yoshifumi Masago, Daisuke Sano, and Tatsuo Omura. "Development of an Effective Method for Recovery of Viral Genomic RNA from Environmental Silty Sediments for Quantitative Molecular Detection." Applied and Environmental Microbiology 77, no. 12 (2011): 3975–81. http://dx.doi.org/10.1128/aem.02692-10.

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ABSTRACTNine approaches to recover viral RNA from environmental silty sediments were newly developed and compared to quantify RNA viruses in sediments using molecular methods. Four of the nine approaches employed direct procedures for extracting RNA from sediments (direct methods), and the remaining five approaches used indirect methods wherein viral particles were recovered before RNA extraction. A direct method using an SDS buffer with EDTA to lyse viral capsids in sediments, phenol-chloroform-isoamyl alcohol to extract RNA, isopropanol to concentrate RNA, and magnetic beads to purify RNA re
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Corell, R. A., L. K. Read, G. R. Riley, et al. "Complexes from Trypanosoma brucei that exhibit deletion editing and other editing-associated properties." Molecular and Cellular Biology 16, no. 4 (1996): 1410–18. http://dx.doi.org/10.1128/mcb.16.4.1410.

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Transcripts from many mitochondrial genes in kinetoplastids undergo RNA editing, a posttranscriptional process which inserts and deletes uridines. By assaying for deletion editing in vitro, we found that the editing activity from Trypanosoma brucei mitochondrial lysates (S.D. Seiwert and K.D. Stuart), Science 266:114-117,1994) sediments with a peak of approximately 20S. RNA helicase, terminal uridylyl transferase, RNA ligase, and adenylation activities, which may have a role in editing, cosediment in a broad distribution, with most of each activity at 35 to 40S. Most ATPase 6 (A6) guide RNA an
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Dell’Anno, A., M. Fabiano, M. L. Mei, and R. Danovaro. "Pelagic-Benthic Coupling of Nucleic Acids in an Abyssal Location of the Northeastern Atlantic Ocean." Applied and Environmental Microbiology 65, no. 10 (1999): 4451–57. http://dx.doi.org/10.1128/aem.65.10.4451-4457.1999.

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ABSTRACT Spatial and temporal changes in sedimentary nucleic acid concentrations in an abyssal locality of the northeastern Atlantic Ocean were investigated in relation to fluxes of nucleic acids produced in the photic layer. Sediment trap material, collected between 1996 and 1998 at depths of 1,000, 3,000, and 4,700 m, and sediment samples were analyzed for DNA and RNA content. Nucleic acid concentrations in the sediments were very high and displayed significant temporal changes, whereas mesoscale variability was low. DNA and RNA concentrations generally displayed opposite temporal patterns,
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Zhang, Xiaonan, Hucai Zhang, Fengqin Chang, et al. "Application of Corrected Methods for High-Resolution XRF Core Scanning Elements in Lake Sediments." Applied Sciences 10, no. 22 (2020): 8012. http://dx.doi.org/10.3390/app10228012.

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Contemporary studies emphasize theoretical and analytical aspects of monitoring water quality within lacustrine settings. The X-ray fluorescence (XRF) core scanner provides the most rapid, non-destructive high-resolution elemental measurements for unprocessed sediments. However, the analytical precision of measured elemental composition may be offset due to water content and inhomogeneities in the physical properties of the sediment. A range of calibration approaches developed specifically for converting XRF scanning intensities to element fractions has been made available. Here, two lake sedi
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Rodríguez-Martínez, Raquel, Guy Leonard, David S. Milner, et al. "Controlled sampling of ribosomally active protistan diversity in sediment-surface layers identifies putative players in the marine carbon sink." ISME Journal 14, no. 4 (2020): 984–98. http://dx.doi.org/10.1038/s41396-019-0581-y.

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AbstractMarine sediments are one of the largest carbon reservoir on Earth, yet the microbial communities, especially the eukaryotes, that drive these ecosystems are poorly characterised. Here, we report implementation of a sampling system that enables injection of reagents into sediments at depth, allowing for preservation of RNA in situ. Using the RNA templates recovered, we investigate the ‘ribosomally active’ eukaryotic diversity present in sediments close to the water/sediment interface. We demonstrate that in situ preservation leads to recovery of a significantly altered community profile
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Hiraoka, Satoshi, Miho Hirai, Yohei Matsui, et al. "Microbial community and geochemical analyses of trans-trench sediments for understanding the roles of hadal environments." ISME Journal 14, no. 3 (2019): 740–56. http://dx.doi.org/10.1038/s41396-019-0564-z.

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AbstractHadal trench bottom (>6000 m below sea level) sediments harbor higher microbial cell abundance compared with adjacent abyssal plain sediments. This is supported by the accumulation of sedimentary organic matter (OM), facilitated by trench topography. However, the distribution of benthic microbes in different trench systems has not been well explored yet. Here, we carried out small subunit ribosomal RNA gene tag sequencing for 92 sediment subsamples of seven abyssal and seven hadal sediment cores collected from three trench regions in the northwest Pacific Ocean: the Japan, Izu-Ogasa
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Frischer, Marc E., Jean M. Danforth, Michele A. Newton Healy, and F. Michael Saunders. "Whole-Cell versus Total RNA Extraction for Analysis of Microbial Community Structure with 16S rRNA-Targeted Oligonucleotide Probes in Salt Marsh Sediments." Applied and Environmental Microbiology 66, no. 7 (2000): 3037–43. http://dx.doi.org/10.1128/aem.66.7.3037-3043.2000.

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ABSTRACT rRNA-targeted oligonucleotide probes have become powerful tools for describing microbial communities, but their use in sediments remains difficult. Here we describe a simple technique involving homogenization, detergents, and dispersants that allows the quantitative extraction of cells from formalin-preserved salt marsh sediments. Resulting cell extracts are amenable to membrane blotting and hybridization protocols. Using this procedure, the efficiency of cell extraction was high (95.7% � 3.7% [mean � standard deviation]) relative to direct DAPI (4′,6′-diamidino-2-phenylindo
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Lazar, Cassandre Sara, Stéphane L'Haridon, Patricia Pignet, and Laurent Toffin. "Archaeal Populations in Hypersaline Sediments Underlying Orange Microbial Mats in the Napoli Mud Volcano." Applied and Environmental Microbiology 77, no. 9 (2011): 3120–31. http://dx.doi.org/10.1128/aem.01296-10.

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ABSTRACTMicrobial mats in marine cold seeps are known to be associated with ascending sulfide- and methane-rich fluids. Hence, they could be visible indicators of anaerobic oxidation of methane (AOM) and methane cycling processes in underlying sediments. The Napoli mud volcano is situated in the Olimpi Area that lies on saline deposits; from there, brine fluids migrate upward to the seafloor. Sediments associated with a brine pool and microbial orange mats of the Napoli mud volcano were recovered during the Medeco cruise. Based on analysis of RNA-derived sequences, the “active” archaeal commun
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Mills, Heath J., Evan Hunter, Mike Humphrys, et al. "Characterization of Nitrifying, Denitrifying, and Overall Bacterial Communities in Permeable Marine Sediments of the Northeastern Gulf of Mexico." Applied and Environmental Microbiology 74, no. 14 (2008): 4440–53. http://dx.doi.org/10.1128/aem.02692-07.

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ABSTRACT Sandy or permeable sediment deposits cover the majority of the shallow ocean seafloor, and yet the associated bacterial communities remain poorly described. The objective of this study was to expand the characterization of bacterial community diversity in permeable sediment impacted by advective pore water exchange and to assess effects of spatial, temporal, hydrodynamic, and geochemical gradients. Terminal restriction fragment length polymorphism (TRFLP) was used to analyze nearly 100 sediment samples collected from two northeastern Gulf of Mexico subtidal sites that primarily differ
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Rustiah, Waode, Alfian Noor, Maming Maming, Muhammad Lukman, and Nurfadillah Nurfadillah. "Distribusi Kandungan Logam Berat Pb dan Cd pada Sedimen Sepanjang Muara Sungai dan Laut Perairan Spermonde, Sulawesi Selatan, Indonesia." Indo. J. Chem. Res. 7, no. 1 (2019): 1–8. http://dx.doi.org/10.30598//ijcr.2019.7-rus.

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The determination of lead (Pb) and cadmium (Cd) levels in sediment samples in Spermonde waters has been determined. Sampling was carried out in river and sea estuary waters. The method used in the analysis of Pb and Cd is the one specified by SNI 06-6992.3-2004 and SNI 06-6992.4-2004. Based on the Decree of the Minister of Environment No. 51 of 2004, the general condition of Spermonde waters still supports the activities of marine organisms. The results showed that Spermonde waters received more Pb metal input than Cd metal. Pb metal content in river estuary and sea waters averaged 17.38 ppm.
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Tesis sobre el tema "Sedimento de rua"

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Azevedo, Filho Jo?o Batista de. "Assinaturas antropog?nicas de elementos maiores e tra?os em poeira urbana na cidade do Natal-RN." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/17705.

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Made available in DSpace on 2014-12-17T15:42:06Z (GMT). No. of bitstreams: 1 JoaoBAF_DISSERT.pdf: 2926590 bytes, checksum: 284a772c6dacfa2a7184d7f4569c6cab (MD5) Previous issue date: 2011-03-11<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior<br>Although there are many studies on urban dust contamination by heavy metals in developed countries, little attention has been paid to this type of study in developing countries, including Brazil. Therefore, a series of investigations were performed to provide signatures of heavy metals in urban dust and assess the potential sources in t
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D´Angelo, Raffaela Araújo. "O uso de esteróis, n-alcanos e fenóis da lignina como marcadores de fontes de matéria orgânica sedimentar em lagos de ria e lagos de várzea na bacia amazônica central (Brasil)." Niterói, 2016. https://app.uff.br/riuff/handle/1/2609.

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Submitted by Biblioteca de Pós-Graduação em Geoquímica BGQ (bgq@ndc.uff.br) on 2016-12-14T15:05:41Z No. of bitstreams: 1 Tese Raffaela Araujo Dangelo.pdf: 3601516 bytes, checksum: e3eaa1bf8e5899920aadd3b101771782 (MD5)<br>Made available in DSpace on 2016-12-14T15:05:41Z (GMT). No. of bitstreams: 1 Tese Raffaela Araujo Dangelo.pdf: 3601516 bytes, checksum: e3eaa1bf8e5899920aadd3b101771782 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Programa de Doutorado Sanduíche no Exterior (PDSE - CAPES)<br>Universidade Federal Fluminense. Instituto de Química. Programa de Pós-
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Ara?jo, Amanda Dias. "Caracteriza??o geoqu?mica e ambiental em ?rea de garimpo no munic?pio de Diamantina/MG." UFVJM, 2017. http://acervo.ufvjm.edu.br/jspui/handle/1/1612.

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Submitted by Jos? Henrique Henrique (jose.neves@ufvjm.edu.br) on 2018-03-15T20:14:01Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) amanda_dias_araujo.pdf: 4866060 bytes, checksum: 4bf20df489807647557baa1fee5ae8ac (MD5)<br>Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2018-03-29T12:42:50Z (GMT) No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) amanda_dias_araujo.pdf: 4866060 bytes, checksum: 4bf20df489807647557baa1fee5ae8ac (MD5)<br>Made available in DSpace on 2
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Ribeiro, Fábio André Martins. "Estudo laboratorial de sedimentos coesivos da Ria de Aveiro." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13982.

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Mestrado Engenharia Civil<br>A Ria de Aveiro é um sistema costeiro de elevado valor económico, ambiental e social, que tem sofrido importantes modificações de origem antropogénica, mas que é também potencialmente sensível às alterações climáticas. Parte das transformações resultam do transporte de sedimentos que ocorre na Ria, pelo que a compreensão destes processos é importante. No que respeita à simulação do transporte sedimentar e da evolução morfológica, os modelos numéricos dependem de parâmetros de erosão, transporte e deposição ainda mal compreendidos, particularmente no caso do transpo
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Costa, Sandra Marisa Silva. "Suspended sediments in Ria de Aveiro: present and future dynamics." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17391.

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Doutoramento em Engenharia Civil<br>Ao longo do tempo a Ria de Aveiro foi sujeita a modificações geomorfológicas, resultantes da combinação de ações naturais e humanas, que levaram a alterações na dinâmica da maré, e consequentemente no balanço sedimentar e no seu potencial para exportar os sedimentos. Desta forma, o objetivo deste trabalho é avaliar a influência de alterações climáticas e humanas futuras na dinâmica dos sedimentos em suspensão na Ria de Aveiro. A metodologia seguida foi a análise da evolução passada dos caudais em suspensão do rio Vouga, com recurso a curvas de caudal
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Kurfürst, Vlastimil. "Monitoring kontaminace vod a sedimentů po těžbě uranové rudy." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2011. http://www.nusl.cz/ntk/nusl-216696.

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This paper deals with the monitoring of water contamination and sediments in the area of Olší - Drahonín. Firstly, the water contamination released into the river Hadůvka is evaluated. Secondly, the sediments in the river are monitored and the surface water flow is evaluated. Finally, the water treatment technology and sampling is described. A description of the separation methods and choice of standard methods is outlined.
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Fangueiro, David Paulo. "Métodos de fraccionamento de metais vestigiais em águas e sedimentos estuarinos." Doctoral thesis, Universidade de Aveiro, 2004. http://hdl.handle.net/10773/17597.

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Doutoramento em Química<br>Os metais vestigiais têm um papel importante em sistemas bifásicos água / sedimento tais como a “Ria de Aveiro”. Por outro lado, alguns destes metais podem ser tóxicos para o homem, sendo, por esse motivo, importante estimar a sua mobilidade no ambiente assim como a sua capacidade de migrar na cadeia alimentar. O objectivo principal deste trabalho foi desenvolver e optimizar métodos de fraccionamento de metais vestigiais (Cu, Cd e Pb) em águas e sedimentos estuarinos. Adicionalmente, foi também estudado o carácter operacional da fracção de metal lábil determi
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Oliveira, Eliana Maria Araújo. "Erosão, deposição e transporte sedimentar na Ria de Aveiro." Master's thesis, Universidade de Aveiro, 2010. http://hdl.handle.net/10773/3938.

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Mestrado em Engenharia Civil<br>A Laguna de Aveiro define-se, hoje, como sendo bastante alongada e ramificada, com um comprimento de cerca de 45 km segundo o seu eixo longitudinal e com 10 km de extensão na zona mais larga. Uma barreira extensa de areia separa o mar da Laguna. Esta barreira é de largura variável, dependendo de fenómenos como a erosão, disponibilidade e deposição de sedimentos (Araújo, 2005). De forma a efectuar a caracterização hidrodinâmica e de transporte sedimentar de diversos locais da Ria de Aveiro, escolheram-se 30 estações de estudo divididas em duas classes, co
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Dias, Armando Cavalcante Franco. "Diversidade de bactérias do sedimento de manguezal da ilha do Cardoso Cananéia - São Paulo." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/87/87131/tde-05012009-171607/.

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O presente trabalho busca entender a dinâmica de comunidades bacterianas cultiváveis e não cultiváveis do ecossistema do manguezal e prospectar nesse ambiente ainda inexplorado, um possível potencial biotecnológico. As amostras de sedimentos foram retiradas de duas profundidades no inverno e no verão. Bactérias caracterizadas por meio da técnica de ARDRA pertencem as ordens Vibrionales, Bacillales e Actinomycetales. As espécies bacterianas cultiváveis e as não cultiváveis foram também avaliadas por meio da técnica de PCR-DGGE, onde utilizou-se iniciadores seletivos para Actinobacterias, a e b
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Bonito, Fernando Alcino Borges. "Reologia dos lodos e de outros sedimentos recentes da Ria de Aveiro." Doctoral thesis, Universidade de Aveiro, 2008. http://hdl.handle.net/10773/2408.

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Doutoramento em Engenharia Civil<br>Nos últimos anos têm sido construídas e estão projectadas para a construção várias obras de engenharia civil na região de Aveiro, destacando-se algumas infra-estruturas rodoviárias, ferroviárias e portuárias cujo funcionamento em pleno reveste-se de particular importância dados os seus impactos globalmente positivos na estruturação do tecido socioeconómico da região e do país. Por outro lado, aspectos como a localização geográfica litoral e o enquadramento geológico da cidade de Aveiro, cuja paisagem geomorfológica é dominada pela denominada laguna de Av
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Capítulos de libros sobre el tema "Sedimento de rua"

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Benoliel, M. J., M. P. Pestana, and M. C. Caleiro. "Organochlorine Compounds in Water, Sediments and Bivalves from Ria Formosa (Portugal)." In Organic Micropollutants in the Aquatic Environment. Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3356-2_47.

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Falcão, Manuela, and Carlos Vale. "Sediment—water exchanges of ammonium and phosphate in intertidal and subtidal areas of a mesotidal coastal lagoon (Ria Formosa)." In Oceans, Rivers and Lakes: Energy and Substance Transfers at Interfaces. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-011-5266-2_16.

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Pedrosa-García, M. C. "$$^{210}$$ 210 Pb-Dating of Pb Deposition in Five Sediment Cores from Ria of Vigo (NW Spain): $$\upgamma $$ γ -Spectrometry and CRS Model." In Springer Proceedings in Physics. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21191-6_11.

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Thrush, Simon F., Judi E. Hewitt, Conrad A. Pilditch, and Alf Norkko. "Human impacts." In Ecology of Coastal Marine Sediments. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198804765.003.0011.

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Coastal soft sediments are closely linked to human activity both on the land and at sea and consequently they are subjected to a wide array of human impacts. Looking for some general patterns in the consequences of impacts, this chapter identifies a range of different ecological changes as a result of direct impacts and then moves to address indirect effects. The chapter looks at the connections between local and global impacts focussing on eutrophication, fishing impacts, sediment run-off from land and plastic pollution. This leads to an introduction into the challenges of addressing multiple stressor effects, cumulative effects and the stress and disturbance-induced homogenisation of seafloor habitats and communities. The history of impact in coastal ecosystems often means that we have no appreciation for what has been lost in terms of biodiversity and ecosystem function. The chapter emphasises that to address the challenges of human-induced changes in soft sediments, we need good knowledge of how seafloor ecosystems function and how ecological systems as a network of interactions respond to change.
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Bianchi, Thomas S. "Phosphorus and Silica Cycles." In Biogeochemistry of Estuaries. Oxford University Press, 2006. http://dx.doi.org/10.1093/oso/9780195160826.003.0021.

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Phosphorus (P) is one of the most well-studied nutrients in aquatic ecosystems because of its role in limiting primary production on ecological and geological timescales (van Capellen and Berner, 1989; Holland, 1994; Tyrell, 1999; van Cappellen and Ingall, 1996). Other key linkages to biological systems include the role of P as an essential constituent of genetic material (RNA and DNA) and cellular membranes (phospholipids), as well as in energy-transforming molecules (e.g., ATP, etc.). Consequently, marine P has received considerable attention in recent decades, with particular emphasis on source and sink terms in budgets (Froelich et al., 1982; Meybeck, 1982; Ruttenberg, 1993; Sutula et al., 2004). Excessive loading of N to estuarine waters can result in P limitation in systems that are generally considered to be N limited. In such cases where primary production is limited by P, N:P ratios are expected to exceed the Redfield value of 16:1 but can be replenished by sediment efflux of P due to redox changes. For example, after the initial N loading of a system there will be an increase in primary production, which can cause the system to become P limited. Then, the phytodetritus from these early stages of N loading can be remineralized in sediments resulting in anoxic conditions in surface sediments, which can then enhance P release from sediments to the overlying waters where primary production is once again enhanced. Evidence for the role of sediment-derived P on primary production in estuaries with high N loading has been shown to occur particularly in shallow water systems (Timmons and Price, 1996; Cerco and Seitzinger, 1997). On the other hand, many coastal areas have also been subjected to high P loading from anthropogenic sources, where in some cases inputs of P are 10 to 100 times greater than in preindustrial times (Caraco et al., 1993). In many cases, P and N loading to estuarine systems will occur simultaneously and decoupling or isolating their individual effects can be difficult (e.g., HELCOM, 2001). The cycling and availability of P in estuaries is largely dependent upon P speciation.
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Annandale, George W. "Sediment Yield." In Extending the Life of Reservoirs: Sustainable Sediment Management for Dams and Run-of-River Hydropower. The World Bank, 2016. http://dx.doi.org/10.1596/978-1-4648-0838-8_ch4.

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Morris, Gregory L. "Sediment Monitoring." In Extending the Life of Reservoirs: Sustainable Sediment Management for Dams and Run-of-River Hydropower. The World Bank, 2016. http://dx.doi.org/10.1596/978-1-4648-0838-8_ch6.

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Morris, Gregory L. "Sediment Management Techniques." In Extending the Life of Reservoirs: Sustainable Sediment Management for Dams and Run-of-River Hydropower. The World Bank, 2016. http://dx.doi.org/10.1596/978-1-4648-0838-8_ch7.

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Gray, John S., and Michael Elliott. "Human impacts on soft-sediment systems—pollution." In Ecology of Marine Sediments. Oxford University Press, 2009. http://dx.doi.org/10.1093/oso/9780198569015.003.0013.

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A widely accepted definition of marine pollution is “the introduction by man, directly or indirectly, of substances or energy into the marine environment (including estuaries) resulting in such deleterious effects as harm to living resources, hazards to human health, hindrance to marine activities including fishing, impairment of the quality for use of seawater, and reduction of amenities”. (Wells et al. 2002). This differs from contamination since it results in biological damage, whether to the natural or human system, whereas contamination can be regarded merely as the introduction of substances by human activities (McLusky and Elliott 2004). Furthermore, pollution and pollutants can refer to biological and physical materials as well as chemicals (Gray 1992, Elliott 2003). In the case of the benthos, there is an extensive literature indicating that every type of pollutant has an effect on the benthos and so it is not surprising that the benthos is the mainstay of any monitoring and investigative programme. Pollution can affect organisms living in sediments by physical variables associated with the pollution source, such as increased sedimentation of particles, which leads to smothering of the fauna. In such cases the effect can in fact be regarded as a disturbing factor if the effects lead to mortality of individuals (Gray 1992). Alternatively, pollution can affect the fauna by toxicity where increased concentrations of contaminants lead to biochemical and physiological effects and ensuing mortality if certain thresholds for adaptation are exceeded. Here, however, we first treat the effects of the most widespread form of pollution affecting the marine environment— increased organic matter in sediments. Excess organic matter enters the marine environment principally as sewage, although it can also include waste from paper pulp mills or changed river run-off, for example. Excess organic matter causes physical effects such as smothering and also leads to reduced oxygen concentrations in the water column or pore-water in sediments. Sewage discharged into confined bodies of water frequently leads to the well-known symptoms termed eutrophication, resulting, in the most extreme cases, in a total lack of oxygen and the presence of hydrogen sulfide in the sediment, with a corresponding absence of fauna (e.g. de Jonge and Elliott 2001).
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Bianchi, Thomas S., and Elizabeth A. Canuel. "Nucleic Acids and Molecular Tools." In Chemical Biomarkers in Aquatic Ecosystems. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691134147.003.0007.

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This chapter examines nucleic acids, polymers of RNA and DNA, which act as the templates for protein synthesis. High levels of nucleic acids in microbes contribute to their elevated nitrogen and phosphorus contents. In recent years, isotopic signatures of nucleic acids have provided new insights about the sources of carbon-supporting bacterial activity. The chapter discusses recent efforts to bridge the fields of organic geochemistry and molecular ecology. The coupling of biomarker information to molecular (genetic) data has the potential to provide new insights about specific sediment microbial communities and their effects on sediment organic matter. Recent studies have provided information about the evolutionary basis of biosynthetic pathways, which influence the capabilities of microorganisms to utilize specific substrates and the synthesis of unique biomarkers. Such efforts demonstrate the impact that microorganisms have on organic geochemistry.
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Actas de conferencias sobre el tema "Sedimento de rua"

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Shephard, Eugene, Nelson Walter, Heath Downey, Peter Collopy, and John Conant. "Remediation of Uranium Impacted Sediments in a Watercourse." In ASME 2013 15th International Conference on Environmental Remediation and Radioactive Waste Management. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icem2013-96115.

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In 2009, remediation was initiated for a non-operational fuel cycle facility previously used for government contract work located in Windsor, Connecticut, USA. Radiological contaminants consisted primarily of high enriched uranium (HEU). Other radionuclides encountered in relatively minor amounts in certain areas of the clean-up included Co-60, Cs-137, Ra-226, Th-232 and low enriched uranium (LEU). Between 2009 and the spring of 2011, remediation efforts were focused on demolition of contaminated buildings and removal of contaminated soil. In the late spring of 2011, the last phase of remediat
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Foltz, William, and Ning Zhang. "Numerical Analysis of the Turbulent Flow Characteristics Around Submerged Permeable Breakwaters." In ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/fedsm2018-83155.

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A breakwater is a structure used to reduce the energy of waves. When used properly, they can protect coasts from being affected by waves. One such application is to lessen erosion along Louisiana’s coastlines, where wave action is strong and is the main source of the erosion. Additionally, the breakwater can change how sediments are transported, and allow for the deposition and accumulation of sediment at target areas. This research aims to give a numerical comparison of the effectiveness of three different breakwater designs, and reveal the turbulence characteristics downstream of the breakwa
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KOMBIADOU, KATERINA, ANA MATIAS, SUSANA COSTAS, A. RITA CARRASCO, ÓSCAR FERREIRA, and THEOCHARIS PLOMARITIS. "ASSESSMENT OF NATURAL AND ANTHROPIC DRIVERS TO THE EVOLUTION OF RIA FORMOSA BARRIER ISLAND SYSTEM." In International Conference on Coastal Sediments 2019. WORLD SCIENTIFIC, 2019. http://dx.doi.org/10.1142/9789811204487_0006.

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FERREIRA, ÓSCAR. "MORPHODYNAMIC IMPACT OF INLET RELOCATION TO THE UPDRIFT COAST: ANCÃO PENINSULA (RIA FORMOSA, PORTUGAL)." In The Proceedings of the Coastal Sediments 2011. World Scientific Publishing Company, 2011. http://dx.doi.org/10.1142/9789814355537_0038.

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Terra, Laurício Corrêa, Luis Menezes Pinheiro, Clara Sena, Vitor Magalhães, Mohamed Seddik, and Tom Birien. "Shallow Gas Accumulation in Sediments of the Ria de Aveiro, Portugal." In 15th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 31 July-3 August 2017. Brazilian Geophysical Society, 2017. http://dx.doi.org/10.1190/sbgf2017-079.

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Hoyt, J. W., and R. H. J. Sellin. "Extracting Numbers From Tracer Flow Visualization: High Attack-Angle Vanes." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31170.

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High attack-angle vanes have been proposed as a means of maintaining sediment in suspension in rivers and streams. Laboratory and computer studies have, up to now, been unable to describe how the flow mechanism actually works in the sediment-suspension mode. A turbulent-flow tracer has been used to study model vanes in a small water channel at the University of Bristol. The sediment-suspension capabilities of such vanes becomes evident from their highly swirling non-symmetric Ka´rma´n vortex-type wakes. The wake patterns have been analyzed using video recordings and frame-counting software. Us
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Cabezas-Rabadán, Carlos, Jaime Almonacid-Caballer, Josep E. Pardo-Pascual, and Jesús Soriano-González. "VARIABILIDAD DE LA LÍNEA DE COSTA A PARTIR DE IMÁGENES DE SATÉLITE Y SU RELACIÓN CON LA TEXTURA DEL SEDIMENTO." In 1st Congress in Geomatics Engineering. Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/cigeo2017.2017.6628.

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Beaches are natural environments of great interest for our society. They go through remarkable changes run by key factors that are interconnected according to the literature. A better understanding of these parameters, such as sediment texture and shoreline variability, would be of a great interest for coastal monitoring and planning. Shorelines of all Landsat 8 (OLI) images available over the course of one year have been obtained for determining the variability that has occurred in different Valencian beaches. Likewise, the relation between shoreline variability and sediment texture has been
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Rastegaev, B. A., V. N. Gnibidin, O. V. Nozhkina, and I. V. Dorovskikh. "Provision of Shale Sediment Stability in Deviated (Horizontal) Wells (Russian)." In SPE Russian Oil and Gas Exploration & Production Technical Conference and Exhibition. Society of Petroleum Engineers, 2014. http://dx.doi.org/10.2118/171286-ru.

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Maganov, Nail, Rais Khisamov, Venera Bazarevskaya, Renara Abusalimova, Olga Mikhailova, and Dmitry Anoshin. "Hydrofrac Monitoring in Domanik Sediments: Lessons Learned by PJSC TATNEFT (Russian)." In SPE Russian Petroleum Technology Conference. Society of Petroleum Engineers, 2019. http://dx.doi.org/10.2118/196737-ru.

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Zaimi, Klodian, and Fatos Hoxhaj. "HYDROLOGICAL MODELLING AND ESTIMATION OF THE SEDIMENTS ACCUMULATION IN BOVILLA RESERVOIR." In GEOLINKS International Conference. SAIMA Consult Ltd, 2020. http://dx.doi.org/10.32008/geolinks2020/b1/v2/26.

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Bovilla reservoir is the main source of water supply for around 1 million inhabitants in Tirana, the capital of Albania. The reservoir was created in 1998 from Bovilla Dam and belongs to the upper part of the Terkuza River catchment. The dam previously was planned in a smaller size for irrigation purposes. Intense erosion due to large deforestations followed by increasing nutrient run-off from cultivated land is a challenge for the Bovilla Dam management authority because it is influencing the water quality in daily use and decreasing the dam lifespan in long term. Zall Bastari stream transpor
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Informes sobre el tema "Sedimento de rua"

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Hamilton, Doann. Sediment Yield Analysis of Reservoir #1, Bull Run Watershed, West Cascade Mountains, Oregon. Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.6714.

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The Integrated Economic-Environmental Modeling Platform: IEEM Platform Technical Guides: The Ecosystem Services Modeling Data Packet: Overview and Guidelines for Use. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003076.

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This Technical Note describes the ecosystem service model data packets which were developed through the Integrated Economic-Environmental Modeling (IEEM) Platform project to facilitate the application of ecosystem services modeling to support evidence-based public policy and investment decision making. The data packets provide the spatial data and lookup tables needed to run the InVEST carbon storage, annual water yield, sediment delivery ratio, and nutrient delivery ratio models for 21 countries (and counting) in the Latin American and the Caribbean region. This Technical Note describes the c
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