Consulta: subjectFacets:"Dust"
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Planck 2018 results: XII. Galactic astrophysics using polarized dust emission
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Aghanim, N.; Akrami, Y.; Alves, Mir; Ashdown, M.; Aumont, J.; Baccigalupi, C.; Ballardini, M.; Banday, A. J.; Barreiro, R. B.; Bartolo, N.; Basak, S.; Benabed, K.; Bernard, J. -p.; Bersanelli, M.; Bielewicz, P.; Bock, J. J.; Bond, J. R.; Borrill, J.; Bouchet, F. R.; Boulanger, F.; Bracco, A.; Bucher, M.; Burigana, C.; Calabrese, E.; Cardoso, J. -f.; Carron, J.; Chary, R. -r.; Chiang, H. C.; Colombo, L. P. L.; Combet, C.; Crill, B. P.; Cuttaia, F.; De Bernardis, P.; De Zotti, G.; Delabrouille, J.; Delouis, Jean Marc; Di Valentino, E.; Dickinson, C.; Diego, J. M.; Dore, O.; Douspis, M.; Ducout, A.; Dupac, X.; Efstathiou, G.; Elsner, F.; Ensslin, T. A.; Eriksen, H. K.; Falgarone, E.; Fantaye, Y.; Fernandez-cobos, R.; Ferriere, K.; Finelli, F.; Forastieri, F.; Frailis, M.; Fraisse, A. A.; Franceschi, E.; Frolov, A.; Galeotta, S.; Galli, S.; Ganga, K.; Genova-santos, R. T.; Gerbino, M.; Ghosh, T.; Gonzalez-nuevo, J.; Gorski, K. M.; Gratton, S.; Green, G.; Gruppuso, A.; Gudmundsson, J. E.; Guillet, V.; Handley, W.; Hansen, F. K.; Helou, G.; Herranz, D.; Hivon, E.; Huang, Z.; Jaffe, A. H.; Jones, W. C.; Keihanen, E.; Keskitalo, R.; Kiiveri, K.; Kim, J.; Krachmalnicoff, N.; Kunz, M.; Kurki-suonio, H.; Lagache, G.; Lamarre, J. -m.; Lasenby, A.; Lattanzi, M.; Lawrence, C. R.; Le Jeune, M.; Levrier, F.; Liguori, M.; Lilje, P. B.; Lindholm, V.; Lopez-caniego, M.; Lubin, Pm; Ma, Y. -z.; Macias-perez, J. F.; Maggio, G.; Maino, D.; Mandolesi, N.; Mangilli, A.; Marcos-caballero, A.; Maris, M.; Martin, Pg; Martinez-gonzalez, E.; Matarrese, S.; Mauri, N.; Mcewen, J. D.; Melchiorri, A.; Mennella, A.; Migliaccio, M.; Miville-deschenes, M. -a.; Molinari, D.; Moneti, A.; Montier, L.; Morgante, G.; Moss, A.; Natoli, P.; Pagano, L.; Paoletti, D.; Patanchon, G.; Perrotta, F.; Pettorino, V.; Piacentini, F.; Polastri, L.; Polenta, G.; Puget, J. -l.; Rachen, J. P.; Reinecke, M.; Remazeilles, M.; Renzi, A.; Ristorcelli, I.; Rocha, G.; Rosset, C.; Roudier, G.; Rubino-martin, J. A.; Ruiz-granados, B.; Salvati, L.; Sandri, M.; Savelainen, M.; Scott, D.; Sirignano, C.; Sunyaev, R.; Suur-uski, A. -s.; Tauber, J. A.; Tavagnacco, D.; Tenti, M.; Toffolatti, L.; Tomasi, M.; Trombetti, T.; Valiviita, J.; Vansyngel, F.; Van Tent, B.; Vielva, P.; Villa, F.; Vittorio, N.; Wandelt, B. D.; Wehus, I. K.; Zacchei, A.; Zonca, A.
Observations of the submillimetre emission from Galactic dust, in both total intensity I and polarization, have received tremendous interest thanks to the Planck full-sky maps. In this paper we make use of such full-sky maps of dust polarized emission produced from the third public release of Planck data. As the basis for expanding on astrophysical studies of the polarized thermal emission from Galactic dust, we present full-sky maps of the dust polarization fraction p, polarization angle psi, and dispersion function of polarization angles ?. The joint distribution (one-point statistics) of p and N-H confirms that the mean and maximum polarization fractions decrease with increasing N-H. The uncertainty on the maximum observed polarization fraction, (max) =...
Tipo: Text
Palavras-chave: Polarization; Magnetic fields; Turbulence; Dust; Extinction; Local insterstellar matter; Submillimeter: ISM.
Ano: 2020
URL: https://archimer.ifremer.fr/doc/00654/76632/77786.pdf

Variability of primary production and air-sea CO2 flux in the Southern Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Wang, Shanlin; Moore, J. Keith.
Biogeochemical cycling in the Southern Ocean (SO) plays a key role in the global sea-air CO2 balance and in the ocean anthropogenic carbon inventory (Ito et al., 2010; Khatiwala et al., 2009; Sarmiento et al., 2004). Some previous studies suggest a decreasing trend in the Southern Ocean carbon sink (Le Quere et al., 2007; Lovenduski et al., 2007; Wetzel et al., 2005). We investigate the interannual and decadal variations in sea-air CO2 flux and phytoplankton production in the SO with hindcast simulations by an ocean biogeochemical model. Decreasing trends in sinking POC and primary production are found from 1979 to 2003, concurrent with a decreasing trend in carbon uptake from the atmosphere. Simulations show substantial interannual and decadal variability...
Tipo: Text
Palavras-chave: CO2 flux; Driving mechanism; Dust; Primary production; Variations.
Ano: 2012
URL: https://archimer.ifremer.fr/doc/00383/49454/49914.pdf

Climatic influence of the latest Antarctic isotope maximum of the last glacial period (AIM4) on Southern Patagonia
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Jouve, Guillaume; Lise-pronovost, Agathe; Francus, Pierre; De Coninck, Arnaud S.; Pasado Science Team,.
This paper presents the first detailed paleoclimate reconstruction of the latest Antarctic isotope maximum (AIM4, similar to 33-29 ka cal. BP) at 52 degrees S in continental southeastern Argentine Patagonia. High-resolution sedimentological and geochemical analyses of sediments from the maar lake Potrok Aike (PTA) reveal a decrease in the thickness of flood-induced turbidites and a series of wind burst deposits during AIM4, both pointing to increasingly drier conditions. This interpretation is also supported by a significant amount of runoff-driven micropumices incorporated within the sediments that suggests a lower lake level with canyons incising thick tephra deposits around the lake. Increased gustiness and/or dust availability in southeast Patagonia,...
Tipo: Text
Palavras-chave: Southern Westerly Winds; Micro X-ray fluorescence; Microfacies; Micropumices; Dust; Flood.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00420/53164/83103.pdf

Feedlots, Air Quality, and Dust Control- Benefit Estimation
Provedor de dados: Research in Agricultural & Applied Economics (AgEcon Searh)
Autores: Yu,   Chin-Hsien; Park,   Seong Cheol; McCarl,   Bruce A.; Amosson,   Stephen H.
Tipo: Conference Paper or Presentation
Palavras-chave: Animal feeding operation; Dust; Odor; Externality; Social welfare; Agricultural and Food Policy; Environmental Economics and Policy; Livestock Production/Industries; Productivity Analysis.
Ano: 2011
URL: http://purl.umn.edu/103786

The use of film coating on the performance of treated corn seed
Provedor de dados: Revista Brasileira de Sementes
Autores: Avelar,Suemar Alexandre Gonçalves; Sousa,Fabianne Valéria de; Fiss,Guilherme; Baudet,Leopoldo; Peske,Silmar Teichert.
The main objective of seed coating technology using polymers is to improve the physical, physiological and sanitary characteristics of seed performance. The objectives of the present study were to determine: the plantability of corn seeds treated with insecticide, fungicide and graphite, covered with a film coating; the dust retention on treated corn seeds; and the leaching of applied products on corn seeds covered by a film coating. Seed plantability was determined by counting the skips and double seeds; dust was determined by using fiberglass paper in mg.100 g-1 of seeds; and the leaching was determined by collecting the material leached in a 10 cm layer of sand after irrigation. The following conclusions were made: seeds covered with film coating...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Polymer; Plantability; Dust; Leaching.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000200001

Size distribution of airborne particles in animal houses
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: H.T.L. Lai; Wageningen UR Livestock Research; A.J.A. Aarnink; Wageningen UR Livestock Research, Wageningen, the Netherlands; M. Cambra-López; Institute of Animal Science and Technology Universidad Politécnica de Valencia, Spain; T.T.T. Huynh; Nong Lam University, Ho Chi Minh City, Vietnam; H.K. Parmentier; Adaptation Physiology Group, Wageningen University, Wageningen, the Netherlands; P.W.G. Groot Koerkamp; Farm Technology Group, Wageningen University, Wageningen, the Netherlands.
 The concentration and size distribution of airborne particles were measured inside and outside typical animal houses such as broilers, broiler breeders (both floor housing with litter); layers (floor housing system and aviary housing system); turkeys (floor housing with litter), pigs: fattening pigs (traditional houses, low emission houses with dry feed, and low emission houses with wet feed), piglets, sows (individual and group housing); cattle (cubicle house), and mink (cages).  Using an aerosol spectrometer, particles were counted and classified into 30 size classes (total range: 0.25 – 32 µm).  Particles were measured on for two days, one in spring and the other in summer, in two of each species/housing combination during 30 min inside and outside the...
Palavras-chave: Livestock; Environment; Dust; Particle size distribution  animal houses  CMD  MMD  temperature  relative humidity.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2465

Size distribution of airborne particles in animal houses
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Lai, H.T.L.; Aarnink, A.J.A.; Cambra-López, M.; Huynh, T.T.T.; Parmentier, H.K.; Groot Koerkamp, P.W.G.
 The concentration and size distribution of airborne particles were measured inside and outside typical animal houses such as broilers, broiler breeders (both floor housing with litter); layers (floor housing system and aviary housing system); turkeys (floor housing with litter), pigs: fattening pigs (traditional houses, low emission houses with dry feed, and low emission houses with wet feed), piglets, sows (individual and group housing); cattle (cubicle house), and mink (cages).  Using an aerosol spectrometer, particles were counted and classified into 30 size classes (total range: 0.25 – 32 µm).  Particles were measured on for two days, one in spring and the other in summer, in two of each species/housing combination during 30 min inside and outside the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Livestock; Environment; Dust; Particle size distribution  animal houses  CMD  MMD  temperature  relative humidity.
Ano: 2014
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2465

Concentrations and Settling Rates of Particulate Matter in Laying Hen Barns in the Hot Climatic Region of Cameroon
Provedor de dados: Agricultural Engineering International : The CIGR e-journal
Autores: Ngwabie, Ngwa Martin.
Particulate matter (PM) serves as a carrier of adhesive gaseous compounds, and may result to an underestimation of gas emissions from livestock barns when only filtered air samples are analysed. PM concentrations have hardly been studied in the unique livestock production system of Sub-Saharan Africa. This study was aimed at generating baseline data for PM (total suspended particulates) concentrations and settling rates in laying hen barns with cemented floors and wood shavings added as an initial bedding material. Measurements were conducted in two naturally ventilated laying hen barns in Cameroon; a barn with 4 months old hens that had just stated laying eggs and a barn with 18 months old egg laying hens. PM concentration was determined gravimetrically...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Air pollution; Climate change; Dust; Laying hens; Particulate matter; Total suspended particulates; Cameroon.
Ano: 2020
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5566

Study of the Performance Reduction Due to the Dirt Effect in the Photovoltaic Systems of UTFPR - Curitiba
Provedor de dados: Brazilian Archives of Biology and Technology
Autores: Tonolo,Édwin Augusto; Mariano,Juliana D’Angela; Neves,Carlos Eduardo Teixeira; Silva,Alynne Penha de Mendonça; Urbanetz Junior,Jair.
ABSTRACT Photovoltaic systems have been consolidated in the global energy scenario as an option of low environmental impact energy generation, high reliability and great applicability in urban centers, acting like energy generators near the point of consumption. The Federal University of Technology of Paraná (UTFPR), with the proposal of testing the performance of grid-connected photovoltaic systems (On Grid PV Systems) and help its entry into the Brazilian energy matrix, implemented this technology in two of its buildings: Green Office (GO) And Neoville. This paper analyzed the effects of dust on the Photovoltaic Systems performance based on daily energy. The analysis was carried out from the solar irradiance data from the places where the panels are...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Photovoltaic system; Dust; Power generation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132018000200220

Occurrence and molecular characterization of different virulence-associated genes of Cronobacter sakazakii isolates from some foods and dust samples
Provedor de dados: Ciência Rural
Autores: Demirci,Ülkü; Tekiner,İsmail Hakkı; Çakmak,Burcu; Özpınar,Haydar.
ABSTRACT:  Among the Cronobacter genus, Cronobacter sakazakii is the most common species posing a severe health risk for newborns, infants and children. Some infant formulas, cereal-based foods, and food production environments may be the potential reservoirs of C. sakazakii. This pathogen possesses different virulence factors encoded by different virulence genes. Therefore, characterizing these genes is important for distinguishing pathogenic strains from nonpathogenic ones. The objective of this study was to characterize some virulence genes [OmpA, OmpX, zpx, and Cpa] by real-time polymerase chain reaction (PCR) in C. sakazakii isolates from a total of 120 samples (20 each of milk powder, starch, rice flour, semolina, infant formula and dust samples from...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: C. sakazakii; Dust; Food; Health; Virulence genes.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000800453