Temat: particle matter - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Comparative tests of a passenger car with compression ignition engine on chassis dynamometer during NEDC and WLTC tests and during RDE road test
Autorzy:: Gis, Wojciech
Gis, Maciej
Wiśniowski, Piotr
Bednarski, Mateusz
Tematy:: emissions
pollutant emissions
particle matter
NEDC
WLTP
RDE
emisje
emisje zanieczyszczeń
emisja zanieczyszczeń
cząstki stałe; Pokaż więcej
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Powiązania:: https://bibliotekanauki.pl/articles/134170.pdf Link otwiera się w nowym oknie
Opis:: Air pollution is a challenge for municipal authorities. Increased emission of PM₁₀ and PM_2.5 particles is particularly noticeable in Poland primarily the autumn and winter period. That is due to the start of the heating season. According to the above data, road transport accounted for approximately 5% of the creation of PM₁₀ particles, ca. 7% of PM_2.5 and approximately 32% for NO_x. In Poland, suspended particles (PM₁₀ and PM_2.5) cause deaths of as many as 45,000 people a year. The issue of smog also affects other European cities. Therefore, it is necessary to undertake concrete efforts in order to reduce vehicle exhaust emissions as much as possible. It is therefore justifiable to reduce the emission of exhaust pollution, particularly NO_x, PM, PN by conventional passenger cars powered by compression ignition engines. Emissions by these passenger cars have been reduced systematically. Comparative tests of the above emission of exhaust pollution were conducted on chassis dynamometer of such passenger car in NEDC cycle and in the new WLTC cycle in order to verify the level of emissions from this type of passenger car. Measurements of fuel consumption by that car were also taken. Emission of exhaust pollution and fuel consumption of the this car were also taken in the RDE road test.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Przystosowanie laserowego analizatora uziarnienia LAU-11 do pomiarów wielkości PM10 i PM2,5
Adaptation of laser particle size analyzer LAU-11 for measuring the concentration of PM10 and PM2,5 in the dust
Autorzy:: Paprotny, W.
Adamczyk, Z.
Tematy:: analiza składu ziarnowego
analizator laserowy
analizator LAU-11
zakres pomiarowy
cząstka pylasta
particle size analysis
laser analyzer
analyzer LAU-11
measuring range
particle matter; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Ceramiki i Materiałów Budowlanych
Powiązania:: https://bibliotekanauki.pl/articles/392127.pdf Link otwiera się w nowym oknie
Opis:: Laserowy analizator uziarnienia LAU-11 swą historią sięga lat osiemdziesiątych XX w., a dokładniej konstrukcji granulometru laserowego GL-04, opracowanego w Zakładzie Urządzeń i Pomiarów Cieplnych Instytutu Mineralnych Materiałów Budowlanych [1-3]. Granulometr miał zakres pomiarowy od 3 do 90 ?m podzielony na 6 frakcji i obsługiwany był przy pomocy mikrokomputera ZX Spectrum Plus. Pomiar światła w widmie rozproszonym wykonywany był w 10 punktach widma. Kolejne konstrukcje miały na uwadze rozszerzenie zakresu pomiarowego oraz zwiększenie liczby frakcji. W ten sposób powstały konstrukcje laserowego analizatora uziarnienia LAU-11 i LAU-14 mające po 16 detektorów światła i zakres pomiarowy od ok. 1 do 200 ?m. Różnica między LAU-11 i LAU-14 zasadzała się w konstrukcji głowicy pomiarowej. LAU-11 posiada głowicę składającą się z elementów dyskretnych - fototranzystorów, przy czym pierwsze cztery detektory (najbliższe osi optycznej) wyposażone są w światłowody o średnicy wewnętrznej 0,25 mm. Elementem pomiarowym w LAU-14 jest natomiast linijka CCD składająca się z 512 pixeli pomiarowych, z których wykorzystywanych jest 16 elementów.
Laser particle size analyzer LAU-11 began its history in the late 80’s on the design of the instrument GL-04, developed in the Department of Plant and Thermal Measurements IMMB [1] to [3]. GL-04 had a range of 3 to 90 mim divided into 6 factions and was supported by a microcomputer ZX Spectrum Plus. Measurement of scattered light in the spectrum was performed at 10 points in the spectrum. Other structures were the enlargement of measurement range and increasing the number of fractions. In this way, the resulting structures Laser particle size analyzer LAU-11 and LAU-14 to 16-light detectors and range from about 1 micrometer to 200 mim. The difference between the LAU-11 and LAU-14 design was based in the head. LAU-11 has a head composed of discrete components – phototransistors, the first four detectors (closest to the optical axis) are equipped with optical fibers of internal diameter 0,25 mm. Sensing element in the LAU-14 is composed and the CCD line a measurement of 512 pixels, which are used 16 parts. Was produced over a dozen instruments and GL-04 Laser particle size analyzers LAU-11 and LAU-14. In Opole Branch of the Institute’s LAU-11.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Study of dual-fuel (diesel + natural gas) particle matter and CO2 emissions of a heavy-duty diesel engine during transient operation
Autorzy:: Barroso, P.
Ribas, X.
Pita, M.
Dominguez, J.
De Seia, E.,
García, J.-M.
Tematy:: dual fuel
natural gas
diesel engine
heavy-duty
transient
particle matter
CO2
silnik dwupaliwowy
gaz ziemny
silnik spalinowy
cząstki stałe
dwutlenek węgla; Pokaż więcej
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Powiązania:: https://bibliotekanauki.pl/articles/134220.pdf Link otwiera się w nowym oknie
Opis:: The aim of this study is to describe the impact on particle matter and CO₂ emissions of converting an existing heavy-duty diesel engine for on-highway truck applications to a dual-fuel engine (diesel + natural gas), especially in transient operation. A dual-fuel engine with homogeneous gas charge injection in the intake line before turbocharger was considered. The results showed the feasibility of this kind of technology for transient operation reaching a significant reduction of particle matter plus a decrement in CO₂ emissions at the expense of a small decrement of brake fuel conversion efficiency and an increment of unburned hydrocarbons in the exhaust gases.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effect of air pollution on visibility in urban conditions. Warsaw case study
Autorzy:: Majewski, G.
Czechowski, P O
Badyda, A.
Brandyk, A.
Tematy:: visibility
air pollution
pollutants
mathematical models
nitrogen oxides
sulfur dioxide
urban conditions
urban air pollution
urban atmosphere
particle matter (PM)
przejrzystość powietrza
zanieczyszczenie powietrza
modele matematyczne
tlenki azotu
zanieczyszczenia
dwutlenek siarki
warunki miejskie
pyły zawieszone; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/207001.pdf Link otwiera się w nowym oknie
Opis:: The influence of air pollutants on visibility in Warsaw Agglomeration has been investigated. Following pollutants were considered: PM10, SO2, NO2 and O3, while meteorological parameters included: air temperatures (mean, minimum, maximum), solar radiation, relative air humidity, rainfall rates and wind speed. Initial analyses were performed with the use of principal component analysis (PCA). In next stages, the logistic regression (LR), the analysis of variance (ANOVA), one-way classification and a model path of generalized regression models (GRM) were applied. PCA analysis showed that in the cold season the visibility index depends on PM10, SO2, NO2 and the temperatures: T, Tmin, and Tmax. In the warm season, the index of visibility is mostly shaped by four elements: O3, T, Tmax and solar radiation. Logistic regression model indicated that in the warm season only two variables are significantly related to visibility: PM10 and relative humidity of air. Regularities in the cold season shown by the LR correspond with the conclusions from the PCA. Among meteorological conditions, the most important is air temperature, but only Tmax preserves the same direction of influence as the one pointed by the PCA model.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

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Skocz do pozycji: 6.

Tytuł:: Flotation kinetics and separation selectivity of coal size fractions
Autorzy:: Li, Y.
Zhao, W.
Gui, X.
Zhang, X.
Tematy:: coal
flotation rate
combustible matter recovery
ash
particle size; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/110676.pdf Link otwiera się w nowym oknie
Opis:: Flotation recovery and kinetics for three size fractions of coal were investigated. Flotation of combustible matter recovery was approximated with the first order kinetic equation while flotation of the ash forming minerals with the second order equation. Next, the equations for each size fraction were combined and a formula was obtained which was used for approximation of the experimental results using the so-called Fuerstenau upgrading curve, which relates the recovery of combustible matter recovery and recovery of ash forming minerals, both in concentrate. The Fuerstenau upgrading plot showed that the best selectivity was obtained for the middle size fraction of 0.25–0.075 mm, while the flotation selectivity of larger 0.5–0.25 mm and smaller –0.075 mm particles was diminished. This finding agrees with many other investigations.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Search for an interaction mediated by axion-like particles with ultracold neutrons at the PSI
Autorzy:: Bouillaud, T.
Emmenegger, S.
Thorne, J. A.
Krempel, J.
Touati, S.
Severijns, N.
Ries, D.
Chanel, E.
Bison, G.
Daum, M.
Yazdandoost, N.
Griffith, W. C.
Roccia, S.
Hild, N.
Koss, P. A.
Bondar, V.
Naviliat-Cuncic, O.
Rozpędzik, Dagmara
Weis, A.
Lauss, B.
Fertl, M.
Ziehl, N.
Ayres, N. J.
Kasprzak, M.
Pignol, G.
Rienäcker, I.
Zsigmond, G.
Tavakoli Dinani, R.
Lefort, T.
Wursten, E.
Schmidt-Wellenburg, P.
Bodek, Kazimierz
Doorenbos, C. B.
Crawford, C. B.
Chiu, P.-J.
Mohanmurthy, P.
Svirina, K.
Clement, B.
Harris, P. G.
Flaux, P.
Shen, B.
Kirch, K.
Kletzl, V.
Rawlik, M.
Pais, D.
Zejma, Jacek
Piegsa, F. M.
Opis:: We report on a search for a new, short-range, spin-dependent interaction using a modified version of the experimental apparatus used to measure the permanent neutron electric dipole moment at the Paul Scherrer Institute. This interaction, which could be mediated by axion-like particles, concerned the unpolarized nucleons (protons and neutrons) near the material surfaces of the apparatus and polarized ultracold neutrons stored in vacuum. The dominant systematic uncertainty resulting from magnetic-field gradients was controlled to an unprecedented level of approximately 4 pT cm$^{−1}$ using an array of optically-pumped cesium vapor magnetometers and magnetic-field maps independently recorded using a dedicated measurement device. No signature of a theoretically predicted new interaction was found, and we set a new limit on the product of the scalar and the pseudoscalar couplings $g_{s}g_{p}\lambda^{2}$ < 8.3 $\times$ 10$^{-28}$ m$^{2}$ (95% C.L.) in a range of 5 µm < $\lambda$ < 25 mm for the monopole–dipole interaction. This new result confirms and improves our previous limit by a factor of 2.7 and provides the current tightest limit obtained with free neutrons.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 8.

Tytuł:: Study of the material of the ATLAS inner detector for Run 2 of the LHC
Autorzy:: Pałka, Marek
Richter-Wąs, Elżbieta
Współwytwórcy:: Współautorami artykułu są członkowie ATLAS Collaboration w liczbie 2867
Opis:: The ATLAS inner detector comprises three different sub-detectors: the pixel detector, the silicon strip tracker, and the transition-radiation drift-tube tracker. The Insertable B-Layer, a new innermost pixel layer, was installed during the shutdown period in 2014, together with modifications to the layout of the cables and support structures of the existing pixel detector. The material in the inner detector is studied with several methods, using a low-luminosity $\sqrt{s}$ = 13 TeV pp collision sample corresponding to around 2.0 nb$^{−1}$ collected in 2015 with the ATLAS experiment at the LHC. In this paper, the material within the innermost barrel region is studied using reconstructed hadronic interaction and photon conversion vertices. For the forward rapidity region, the material is probed by a measurement of the efficiency with which single tracks reconstructed from pixel detector hits alone can be extended with hits on the track in the strip layers. The results of these studies have been taken into account in an improved description of the material in the ATLAS inner detector simulation, resulting in a reduction in the uncertainties associated with the charged-particle reconstruction efficiency determined from simulation.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 9.

Tytuł:: CALIS : a CALibration Insertion System for the DarkSide-50 dark matter search experiment
Autorzy:: Hackett, B. R.
Rountree, D.
Maricic, J.
Machulin, I. N.
Pelliccia, N.
Franco, D.
Rescigno, M.
Semenov, D. A.
Zec, A.
Cavalcante, P.
Alton, A. K.
Napolitano, J.
Guardincerri, Y.
Odrowski, S.
Walker, S.
Yang, C.
Qian, H.
Martoff, C. J.
Jollet, C.
Edkins, E.
De Vincenzi, M.
Lombardi, P.
Sotnikov, A.
Di Pietro, G.
Albuquerque, I. F. M.
Biery, K.
Agasson, A. N.
Korga, G.
Giagu, S.
Randle, K.
Suvorov, Y.
Vishneva, A.
Kendziora, C. L.
Trinchese, P.
Montanari, D.
Razeto, A.
Rossi, B.
Di Eusanio, F.
Unzhakov, E. V.
D'Incecco, M.
Machado, A. A.
Pallavicini, M.
Cicalò, C.
Wang, Y.
Budano, F.
Milincic, R.
Giganti, C.
Verducci, M.
Westerdale, S.
Romani, A.
Skorokhvatov, M. D.
Marini, L.
Tonazzo, A.
Korablev, D.
Devoto, A.
Cocco, A. G.
Meyers, P. D.
Musico, P.
Cariello, M.
Hungerford, E. V.
Li, X.
Sablone, D.
Wang, H.
Grandi, L.
Monte, A.
Mount, B. J.
Giovanetti, G. K.
Goretti, A. M.
Ortica, F.
Cadonati, L.
Carlini, M.
Pagani, L.
Sands, W.
Agnes, P.
Keeter, K.
Candela, A.
Pordes, S.
Zuzel, Grzegorz
Pugachev, D. A.
Watson, A. W.
Shields, E.
Gromov, M.
Ranucci, G.
Ianni, Al.
Razeti, M.
Davini, S.
Empl, A.
Bussino, S.
Gabriele, F.
Reinhold, B.
Fiorillo, G.
Hughes, D.
Tartaglia, R.
Lissia, M.
Pelczar, Krzysztof
Bottino, B.
Baldin, B.
Back, H. O.
Alexander, T.
Fan, A.
De Cecco, S.
Singh, P. N.
Cadeddu, M.
Longo, G.
Forster, G.
Chepurnov, A.
Johnson, T. N.
Bocci, V.
Miller, J. D.
Pocar, A.
Caravati, M.
Meregaglia, A.
Wada, M.
Canci, N.
Saldanha, R.
Renshaw, A. L.
Herner, K.
Ma, Y.
Testera, G.
Cadoni, M.
Segreto, E.
Humble, P.
Savarese, C.
Ianni, An.
Xiang, Xi.
Bonivento, W.
Covone, G.
Mandarano, A.
Mari, S. M.
Loer, B.
Kubankin, A.
Granato, F.
James, I.
Bonfini, G.
D'Angelo, D.
Schlitzer, B.
Smirnov, O.
Zhu, C.
De Deo, M.
Orsini, M.
Calaprice, F.
Brodsky, J.
Koh, G.
Pantic, E.
Parmeggiano, S.
Riffard, Q.
Saggese, P.
Brigatti, A.
Wilhelmi, J.
Zhong, W.
Fomenko, K.
Stanford, C.
Guan, M.
Rossi, N.
Tatarowicz, J.
Dionisi, C.
Derbin, A.
Galbiati, C.
Catalanotti, S.
Xiao, X.
Vogelaar, B.
Xu, J.
Bossa, M.
Wójcik, Marcin
Muratova, V. N.
Asner, D. M.
Opis:: This paper describes the design, fabrication, commissioning and use of a CALibration source Insertion System (CALIS) in the DarkSide-50 direct dark matter search experiment. CALIS deploys radioactive sources into the liquid scintillator veto to characterize the detector response and detection efficiency of the DarkSide-50 Liquid Argon Time Projection Chamber, and the surrounding 30 t organic liquid scintillator neutron veto. It was commissioned in September 2014 and has been used successfully in several gamma and neutron source campaigns since then. A description of the hardware and an excerpt of calibration analysis results are given below.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 10.

Tytuł:: Validation of measurements of pine pollen grain concentrations in Baltic Sea waters
Autorzy:: Pawlik, Magdalena M.
Ficek, Dariusz
Tematy:: Pine pollen grains
Particle size distribution
Suspended particulate matter
The Baltic Sea
Remote sensing; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Oceanologii PAN
Powiązania:: https://bibliotekanauki.pl/articles/62694774.pdf Link otwiera się w nowym oknie
Opis:: Each spring, pine pollen coats considerable expanses of Baltic Sea surface waters. Measurements have shown that there are areas where its concentrations in this surface layer are so high that they are the dominant constituent of the suspended particulate matter (SPM) (Pawlik and Ficek, 2016). It then determines to a large extent the optical properties of the water surface, inter alia by modifying the sea colour. To date, however, the concentration of this constituent in the marine environment has rarely been studied, and its presence is not accounted for in the satellite algorithms used to define the composition and properties of sea water. This may well be the source of substantial errors in the remote sensing of the optical properties of the water and the measurement of concentrations of the optically important constituents it contains (chlorophyll a, TSM, CDOM). Measuring the concentration of pollen suspensions in Baltic Sea water, which often contains prodigious amounts of other SPM, is a daunting experimental challenge. Firstly, we characterized the pollen from pine trees growing near the southern shores of the Baltic Sea (northern Poland) using a microscope and two instruments routinely used in oceanography for measuring SPM size distributions: the LISST-100X and the Coulter counter. The measurements and analyses showed that a correct interpretation of the LISST-100X and Coulter measurements, is sufficient to count the number of pollen grains in distilled water alone. Furthermore, our laboratory analysis of the particle size distribution spectra enabled the fraction due only to pine pollen grains to be separated from the overall SPM. We then tested our method of analysing the SPM composition, which showed that the LISST-100x instrument is both a useful and an effective means for the in situ detection of the pine pollen that one sees in spring in Baltic waters.
Dostawca treści:: Biblioteka Nauki

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