نتایج جستجو برای: pm1
تعداد نتایج: 625 فیلتر نتایج به سال:
Real-time measurements of inorganic (sulfate, nitrate, ammonium, chloride and black carbon (BC)) and organic submicron aerosols (particles with an aerodynamic diameter of less than 1 μm) from a continental background site (Montsec, MSC, 1570 m a.s.l.) in the western Mediterranean Basin (WMB) were conducted for 10 months (July 2011–April 2012). An aerosol chemical speciation monitor (ACSM) was c...
A precise radiographic evaluation of the local bone dimensions and morphology is important for preoperative planning of implant placement. The purpose of this retrospective study was to analyze dimensions and morphology of edentulous sites in the posterior mandible using cone beam computed tomography (CBCT) images. This retrospective radiographic study measured the bone width (BW) of the mandib...
Ambient wintertime background urban aerosol in Cork city, Ireland, was characterized using aerosol mass spectrometry. During the three-week measurement study in 2009, 93 % of the ca. 1 350 000 single particles characterized by an Aerosol Time-of-Flight Mass Spectrometer (TSI ATOFMS) were classified into five organic-rich particle types, internally mixed to different proportions with elemental c...
Partitioning of major and trace components in PM10–PM2.5–PM1 at an urban site in Barcelona (Spain) in the Western Mediterranean was studied in the period 2005–2006. Particular attention was paid to the partitioning of mineral matter and to the evidence of possible interactions of mineral matter with other pollutants (gaseous pollutants and secondary PM). The results showed a high contribution o...
Strict emission controls were implemented in Beijing and adjacent provinces to ensure good air quality during the 2015 China Victory Day parade. Here, we conducted synchronous measurements of submicron aerosols (PM1) at ground level and 260 m on a meteorological tower by using a high-resolution aerosol mass spectrometer and an aerosol chemical speciation monitor, respectively, in Beijing from 2...
The role of antibodies in protecting the host from human immunodeficiency virus type 1 (HIV-1) infection is of considerable interest, particularly because the RV144 trial results suggest that antibodies contribute to protection. Although infection of non-human primates with simian immunodeficiency virus (SIV) is commonly used as an animal model of HIV-1 infection, the viral epitopes that elicit...
Numerous studies have shown associations between air pollution and health effects on human. The aims of the present study were to provide quantitative data on variation of atmospheric particulate matter (PM) concentration and the impact of PM on the health of people living in Tabriz city. The approach proposed by the World Health Organization (WHO) was applied using the AirQ 2.2.3 software deve...
Seasonal variation and sources of elements bound to urban aerosol were studied. Fine (PM2.5) submicron (PM1) was collected at 2-week campaigns during four seasons in 2018. The total concentration 21 accounted on average for 3.5% the PM2.5 mass 2.0% PM1 concentration. differences element concentrations found. Most both size fractions had a higher winter or autumn than summer spring. Enrichment f...
Particulate matter (PM) pollution from coal combustion is a leading contributor to the influence of atmospheric visibility, photochemical smog, and even global climate. A drop tube furnace was employed explore effects temperature chemical speciation mineral elements on PM formation during Zhundong coal. Chemical fractionation analysis (CFA), X-ray fluorescence (XRF), inductively coupled plasma-...
We have studied the mixed spin-1/2 and 1 Ising ferrimagnetic system with a random anisotropy on triangular lattice three interpenetrating sublattices $A$, $B$, $C$. The spins are represented by $\sigma_{A}$ (states $\pm1/2$), $\sigma_{B}$ $S_{C}$ $\pm1$, $0$). performed Monte Carlo simulations to obtain phase diagram temperature $k_{\text{B}}T/\left|J\right|$ versus strength of $D/\left|J\right...
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