Results 21 to 30 of about 3,845,991 (260)

Development and characterization of a high-performance single-particle aerosol mass spectrometer (HP-SPAMS) [PDF]

Atmospheric Measurement Techniques
This study describes a high-performance single-particle mass spectrometry (HP-SPAMS) design in detail. The comprehensive improvements in the injection system, optical sizing system, mass spectrometry, and data acquisition system have improved particle ...
X. Du, X. Du, Q. Xie, Q. Xie, Q. Huang, Q. Huang, X. Li, X. Li, J. Yang, Z. Hou, J. Wang, X. Li, X. Li, Z. Zhou, Z. Zhou, Z. Huang, Z. Huang, W. Gao, W. Gao, L. Li, L. Li   +20 more
doaj   +1 more source

Impact-Ionization Mass Spectrometry of Cosmic Dust [PDF]

, 2003
In situ characterization of cosmic dust grains typically involves impact-ionization time-of-flight mass spectrometry. Considering the performance and limitations of previous instruments, I designed and tested a novel, compact time-of-flight mass ...
Austin, Daniel Ephraim
core   +1 more source

A Study of a Miniature TDLAS System Onboard Two Unmanned Aircraft to Independently Quantify Methane Emissions from Oil and Gas Production Assets and Other Industrial Emitters

Atmosphere, 2022
In recent years, industries such as oil and gas production, waste management, and renewable natural gas/biogas have made a concerted effort to limit and offset anthropogenic sources of methane emissions.
Abigail Corbett, Brendan Smith
doaj   +1 more source

Studies of Chamber Organic Aerosol using an Aerodyne High-Resolution Time-of-Flight Aerosol Mass Spectrometer [PDF]

, 2011
Secondary organic aerosol (SOA) contributes a substantial fraction to total ambient particulate mass. SOA is a complex mixture of different organic species formed via many gas- and particle-phase reaction pathways. The Aerodyne aerosol mass spectrometer (
Chhabra, Puneet Singh
core   +1 more source

Identification of Flavonoids from Marrubium and Ballota Species (Lamiaceae) and Determination of Chemotaxonomic Markers Using High Performance Liquid Chromatography Mass Spectrometer [PDF]

Journal of Sciences, Islamic Republic of Iran, 2021
Marrubium and Ballota are known to be important medicinal plants belonging to the Lamiaceae family. Their aerial parts have been widely used in traditional medicine.
Mahin Hashemi, Navaz Kharazian
doaj   +1 more source

Development, Validation, and Comparison of Two Mass Spectrometry Methods (LC-MS/HRMS and LC-MS/MS) for the Quantification of Rituximab in Human Plasma

Molecules, 2021
Rituximab is a chimeric immunoglobulin G1-kappa (IgG1κ) antibody targeting the CD20 antigen on B-lymphocytes. Its applications are various, such as for the treatment of chronic lymphoid leukemia or non-Hodgkin’s lymphoma in oncology, and it can also be ...
Aurélien Millet, Nihel Khoudour, Dorothée Lebert, Christelle Machon, Benjamin Terrier, Benoit Blanchet, Jérôme Guitton   +6 more
doaj   +1 more source

Liquid chromatograph/mass spectrometer conditions.

, 2023
Liquid chromatograph/mass spectrometer conditions.
Shane R. Siers (11093334), David A. Goldade (16799070), Steven C. Hess (16799073), Robert T. Sugihara (16799076), Craig A. Riekena (16799079)   +4 more
core   +1 more source

Droplet activation, separation, and compositional analysis: laboratory studies and atmospheric measurements [PDF]

, 2011
Droplets produced in a cloud condensation nuclei chamber (CCNC) as a function of supersaturation have been separated from unactivated aerosol particles using counterflow virtual impaction.
Cziczo, Daniel J., Pekour, Mikhail S., Kohn, Monika, Shilling, John E., Nelson, Danny A., Hiranuma, Naruki   +5 more
core   +4 more sources

Developing of MERTIS as an advanced process from the study up to the flight model [PDF]

, 2013
ESA’s mission BepiColombo will be launched in 2016. MERTIS (Mercury Radiometer and Thermal imaging Spectrometer) is one of the key instruments. MERTIS is an imaging infrared spectrometer and radiometer using an uncooled detector technology with very ...
H. Hiesinger, Helbert, Jörn, Hiesinger, Harald, Säuberlich, Thomas, Arnold, Gabriele, T. Säuberlich, Iris Weber, Weber, Iris, Peter, Gisbert, G. Peter, I. Walter, Walter, Ingo, J. Helbert, G. Arnold   +13 more
core   +1 more source

Quantitative determination of carbonaceous particle mixing state in Paris using single-particle mass spectrometer and aerosol mass spectrometer measurements [PDF]

Atmospheric Chemistry and Physics, 2013
Single-particle mixing state information can be a powerful tool for assessing the relative impact of local and regional sources of ambient particulate matter in urban environments.
R. M. Healy, J. Sciare, L. Poulain, M. Crippa, A. Wiedensohler, A. S. H. Prévôt, U. Baltensperger, R. Sarda-Estève, M. L. McGuire, C.-H. Jeong, E. McGillicuddy, I. P. O'Connor, J. R. Sodeau, G. J. Evans, J. C. Wenger   +14 more
doaj   +1 more source