Results 1 to 10 of about 2,870,954 (374)
As an innovative analytical approach ordinal analysis is applied to positive matrix factorization (PMF) analysis outputs to identify the most important species and factors in chemical ionization mass spectrometry (CIMS) data. The procedure and outcome of
Xiangrui Kong, Jan B.C. Pettersson
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Excitation-Emission Matrix Spectroscopy for Analysis of Chemical Composition of Combustion Generated Particulate Matter [PDF]
Analysis of particulate matter (PM) is critical for the assessment of human exposures to potentially harmful agents, notably combustion-generated PM; specifically polycyclic aromatic hydrocarbons (PAHs) found in them and associated with carcinogenic and mutagenic effects.
Gaurav Mahamuni +7 more
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New Physico-Chemical Analysis of Magnesium-Doped Hydroxyapatite in Dextran Matrix Nanocomposites [PDF]
The new magnesium-doped hydroxyapatite in dextran matrix (10MgHApD) nanocomposites were synthesized using coprecipitation technique. A spherical morphology was observed by scanning electron microscopy (SEM). The X-ray diffraction (XRD) characterization results show hydroxyapatite hexagonal phase formation.
Daniela Predoi +7 more
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Solid-phase excitation-emission matrix spectroscopy for chemical analysis of combustion aerosols.
Exposure to ultrafine combustion aerosols such as particulate matter (PM) from residential woodburning, forest fires, cigarette smoke, and traffic emission have been linked to adverse health outcomes.
Gaurav Mahamuni +7 more
doaj +4 more sources
IQA analysis of the two-particle density matrix: chemical insight and computational efficiency [PDF]
AbstractThe interacting quantum atoms (IQA) method offers a rigorous and minimal route to calculate atomic electron correlation energies from the two-particle density matrix (2PDM). The price paid is that this method is very time-consuming. However, employing CCSD and CCSD(T), we explore several approaches to speed up such calculations.
Mark A. Vincent, Paul L. A. Popelier
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Background: An untargeted chemical analysis of bio-fluids provides semi-quantitative data for thousands of chemicals for expanding our understanding about relationships among metabolic pathways, diseases, phenotypes and exposures.
Dinesh Kumar Barupal +3 more
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Methods for the analysis of endocrine disrupting chemicals in selected environmental matrixes
Endocrine disrupting chemicals (EDCs) are heterogenous in structure, chemical and physical properties, and their capacity to partition into various environmental matrixes. In many cases, these chemicals can disrupt the endocrine systems of vertebrate and invertebrate organisms when present at very low concentrations.
Chris D. Metcalfe +5 more
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Characterizing the Urban Mine—Challenges of Simplified Chemical Analysis of Anthropogenic Mineral Residues [PDF]
Anthropogenic mineral residues are characterized by their material complexity and heterogeneity, which pose challenges to the chemical analysis of multiple elements.
Paul Martin Mählitz +8 more
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Exposure to combustion generated aerosols such as PM from residential woodburning, forest fires, cigarette smoke, and traffic emission have been linked to adverse health outcomes. It is important to assess the chemical composition of PM to examine personal exposure.
Gaurav Mahamuni +6 more
+4 more sources
Chemical and Thermal Analysis of Fly Ash-Reinforced Aluminum Matrix Composites (AMCs)
Fly ash has been utilized as a reinforcing material in the production of aluminum matrix composites, and in this investigation, Al-Si (LM6) fly ash composites were fabricated using the compocasting method. Various compositions of fly ash were incorporated into the samples (4, 5 and 6 wt%), and the preparation temperature ranged from 560 to 800 °C. This
S. Nordin +2 more
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