Results 1 to 10 of about 341,594 (385)

Moderate spectral resolution solar irradiance measurements, aerosol optical depth, and solar transmission, from 360 to 1070 nm, using the refurbished rotating shadow band spectroradiometer (RSS) [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
This paper reports on a third-generation rotating shadow band spectroradiometer (RSS) used to measure global and diffuse horizontal plus direct normal irradiances and transmissions at 1002 wavelengths between 360 and 1070 nm. The prism-dispersed spectral
J. J. Michalsky   +2 more
doaj   +1 more source

Traceable PM2.5 and PM10 Calibration of Low-Cost Sensors with Ambient-like Aerosols Generated in the Laboratory

open access: yesApplied Sciences, 2021
This work builds upon previous efforts at calibrating PM (particulate matter) monitors with ambient-like aerosols produced in the laboratory under well-controlled environmental conditions at the facility known as PALMA (Production of Ambient-like Model ...
Stefan Horender   +3 more
doaj   +1 more source

Long-Term Measurement of PM2.5 Mass Concentration Using an Electrostatic Particle Concentrator-Based Quartz Crystal Microbalance Integrated With Carbon Dioxide Aerosol Jets for PM Sensing in Remote Areas

open access: yesIEEE Access, 2021
Fine particulate matter (PM2.5) is a major environmental health risk. Several instruments based on the quartz crystal microbalance (QCM) have been developed for PM2.5 measurement because of their accurate, sensitive, real-time, and low-cost mass ...
Nhan Dinh Ngo, Jaesung Jang
doaj   +1 more source

Paper-based electrochemical immunosensor for label-free detection of multiple avian influenza virus antigens using flexible screen-printed carbon nanotube-polydimethylsiloxane electrodes

open access: yesScientific Reports, 2022
Many studies have been conducted on measuring avian influenza viruses and their hemagglutinin (HA) antigens via electrochemical principles; most of these studies have used gold electrodes on ceramic, glass, or silicon substrates, and/or labeling for ...
Daesoon Lee   +2 more
doaj   +1 more source

Assessment of occupational exposure to elemental carbon in plants using diesel machinery and equipment

open access: yesMedycyna Pracy, 2023
Background This paper presents and discusses the results of the determination of elemental carbon emitted in diesel engine exhaust into the air of workplaces where machines and equipment with diesel engines are used.
Małgorzata Szewczyńska   +2 more
doaj   +1 more source

Intercomparison Experiment of Water-Insoluble Carbonaceous Particles in Snow in a High-Mountain Environment (1598 m a.s.l.)

open access: yesGeosciences, 2022
The harmonization of sampling, sample preparation and laboratory analysis methods to detect carbon compounds in snow requires detailed documentation of those methods and their uncertainties.
Outi Meinander   +6 more
doaj   +1 more source

Numerical Study of Engine Performance and Emissions for Port Injection of Ammonia into a Gasoline\Ethanol Dual-Fuel Spark Ignition Engine

open access: yesApplied Sciences, 2021
This study aims to investigate the effect of the port injection of ammonia on performance, knock and NOx emission across a range of engine speeds in a gasoline/ethanol dual-fuel engine. An experimentally validated numerical model of a naturally aspirated
Farhad Salek   +5 more
doaj   +1 more source

Plasmonic aerosols [PDF]

open access: yesPhysical Review B, 2019
Plasmonic nanoparticles resonantly couple to and confine light below the diffraction limit. This mechanism has enabled a modern renaissance in optical materials, with potential applications ranging from sensing and circuitry to renewable energies and medicines.
Paul Johns   +4 more
openaire   +3 more sources

Active aerosols

open access: yesOptics Express, 2022
We report the dynamics and control of the orientational and positional order of ensembles of gold nanorods suspended in air at standard temperature and pressure using externally applied electric fields, demonstrating an active aerosol. Light filter, valve and gradient responses are shown, establishing active aerosols as a unique type of optical element
Charles A. Rohde   +5 more
openaire   +3 more sources

Growth of sulphuric acid nanoparticles under wet and dry conditions [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
New particle formation, which greatly influences the number concentrations and size distributions of an atmospheric aerosol, is often followed by a rapid growth of freshly formed particles.
L. Skrabalova   +4 more
doaj   +1 more source

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