Data-parallel primitives for performing operations on the PM1 quadtree, bucket PMR quadtree, and R-tree spatial data structures are presented using the scan model. Algorithms are described for building these three data structures that make use of these primitives. The data-parallel algorithms are assumed to be main memory resident. The algorithms were implemented on a minimally con gured Thinki...

Air pollution due to Particulate Matter (PM) is an increasing concern of global extent. It has been the focus many research projects worldwide and latest low-cost technology offering ease cheap way monitor PM concentration. In this research, a monitoring platform was built with objectives evaluating its feasibility performance in mobile measurements, as well characterizing concentration profile...

In this study, chemical properties of particulate matter (PM<sub>1</sub>) present in the urban area Ansan 2021 were analyzed using a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). Intensive observation was conducted during measurement periods spring (22 days), summer (29 autumn (60 and winter days). High concentrations PM<sub>1</sub> observed when...

This data shows a comparison of ACSM data in Nanjing between a traditional PM1 instrument and a new PM2.5 instrument equipped with a capture vaporiser (CV), along with other instruments. These two modifications to the instrument design have been heavily anticipated for the purposes of comparability with other PM2.5 measurements and to get away from the ‘bounce’ artefacts that are corrected for ...

24-hour samples of pm1 (submicron particles, aerodynamic diameters ≤1 μm) and pm2.5(fine particles, aerodynamic diameters ≤ 2.5 μm) were collected at a quasi-rural area in racibórz (1 january-30 june 2011). the samples were analysed for carbon (organic and elemental), water-soluble ions (na+,nh4 +, k+, mg2+, ca2+, cl-, no3 -, so4 2-) and concentrations of 21 elements with a carbon analyser (sun...

Detekcija i kvantifikacija emitovanih PM1, PM2,5 PM10 suspendovanih čestica tokom rada uređaja za FDM tehniku štampe primenom različitih filamenata sprovedene su u dve kampanje merenja, sa zatvorenim otvorenim prozorima, kako bi se utvrdilo koja radna sredina je bolja operatera.
 

Aerosol mass spectrometer (AMS) measurements have been successfully used towards a better understanding of non-refractory submicron (PM1) aerosol chemical properties based on short-term campaigns. The recently developed Aerosol Chemical Speciation Monitor (ACSM) has been designed to deliver quite similar artifact-free chemical information but for low cost, and to perform robust monitoring over ...