Results 21 to 30 of about 416,822 (244)

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

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

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

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

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

A field-deployable, chemical ionization time-of-flight mass spectrometer [PDF]

Atmospheric Measurement Techniques, 2011
We constructed a new chemical ionization time-of-flight mass spectrometer (CI-TOFMS) that measures atmospheric trace gases in real time with high sensitivity.
T. H. Bertram, J. R. Kimmel, T. A. Crisp, O. S. Ryder, R. L. N. Yatavelli, J. A. Thornton, M. J. Cubison, M. Gonin, D. R. Worsnop   +8 more
doaj   +1 more source

MEMS Membranes with Nanoscale Holes for Analytical Applications

Membranes, 2021
Micro-electro-mechanical membranes having nanoscale holes were developed, to be used as a nanofluidic sample inlet in novel analytical applications.
Alvise Bagolini, Raffaele Correale, Antonino Picciotto, Maurizio Di Lorenzo, Marco Scapinello   +4 more
doaj   +1 more source

Mass Spectrometer

Garg E, Zubair M.
europepmc   +3 more sources

Enhanced Lipid Production in Chlamydomonas reinhardtii Caused by Severe Iron Deficiency

Frontiers in Plant Science, 2021
Microalgae are used as a source of lipids for the production of biofuels. Most algae produce neutral lipids under stress conditions. Here, lipid accumulation by the unicellular alga Chlamydomonas reinhardtii was examined during cultivation under iron ...
Elsinraju Devadasu, Rajagopal Subramanyam   +1 more
doaj   +1 more source

Thermal Decomposition of Ammonium Dinitramide (ADN) as Green Energy Source for Space Propulsion

Aerospace, 2023
The thermal decomposition of an ammonium dinitramide-based energetic compound was conducted for the first time using a dispersive inductively coupled plasma mass spectrometer, DTA-TG analysis, and pyrolysis at a constant temperature. A liquid droplet was
Zakaria Harimech, Kainaubek Toshtay, Meiram Atamanov, Seitkhan Azat, Rachid Amrousse   +4 more
doaj   +1 more source