Results 71 to 80 of about 35,489,065 (303)

Desenvolvimento de métodos analíticos para determinação de metais traço em álcool combustível e gasolina por espectrometrias de absorção atômica e de massa com plasma indutivamente acoplado [PDF]

open access: yes, 2004
Tese (Doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas. Programa de Pós-graduação em QuímicaNeste trabalho, as espectrometrias de absorção atômica com forno de grafite (GF AAS) e de massa com plasma ...
Saint'Pierre, Tatiana Dillenburg
core  

Percolation Diffusion into Self-Assembled Mesoporous Silica Microfibres

open access: yesNanomaterials, 2014
Percolation diffusion into long (11.5 cm) self-assembled, ordered mesoporous microfibres is studied using optical transmission and laser ablation inductive coupled mass spectrometry (LA-ICP-MS).
John Canning   +9 more
doaj   +1 more source

Measurement of CeO2 Nanoparticles in Natural Waters Using a High Sensitivity, Single Particle ICP-MS

open access: yesMolecules, 2020
As the production and use of cerium oxide nanoparticles (CeO2 NPs) increases, so does the concern of the scientific community over their release into the environment.
Ibrahim Jreije   +3 more
doaj   +1 more source

Defect‐Engineered Microwave‐Responsive Ni@C Composites From Waste PET for Catalytic Plastic Upcycling

open access: yesAdvanced Materials, EarlyView.
A circular upcycling strategy transforms waste poly(ethylene terephthalate) bottles into microwave‐responsive Ni@C catalyst featuring lattice‐distorted nickel cores and defective carbon shells. These strain‐rich heterointerfaces enhance dielectric loss and promote localized microwave hotspots, accelerating peroxymonosulfate activation and polymer‐chain
Xiao Lu   +7 more
wiley   +1 more source

Determination of arsenic and lead in single hair strands by laser ablation inductively coupled plasma mass spectrometry

open access: yesScientific Reports, 2017
The purpose of this study was to develop matrix-matched hair standards and a LA-ICP-MS technique for determination of the As and Pb in a single human hair using single spot scan mode.
Ruxin Luo   +5 more
doaj   +1 more source

Determination of Elemental Concentrations in Lichens Using ICP-AES/MS

open access: yesBio-Protocol, 2017
Lichens are good biomonitors for air pollution because of their high enrichment capability of atmospheric chemical elements. To monitor atmospheric element deposition using lichens, it is important to obtain information on the multi-element ...
Liang-Cheng Zhao   +10 more
doaj   +1 more source

Gadolinium deposition in the brain of dogs after multiple intravenous administrations of linear gadolinium based contrast agents.

open access: yesPLoS ONE, 2020
OBJECTIVE:To determine the effect of a linear gadolinium-based contrast agent (GBCA) on the signal intensity (SI) of the deep cerebellar nuclei (DCN) in a retrospective clinical study on dogs after multiple magnetic resonance (MR) examinations with ...
Henning Richter   +4 more
doaj   +1 more source

Engineering Metal‐Pocket Cooperativity in Single‐Atom COF Nanozymes for Selective Cascade Catalysis

open access: yesAdvanced Materials, EarlyView.
A multilevel programming strategy is developed to engineer single‐atom COF nanozymes with tunable metal centers and chiral pockets inspired by heme–pocket cooperativity. This approach enables controlled metal–pocket interplay for asymmetric cascade catalysis, delivering high activity, selectivity, and recyclability in an asymmetric oxidation–aldol ...
Ziping Li   +7 more
wiley   +1 more source

Deterministic Field‐Free Switching of Perpendicular Magnetization by Bulk Mirror Symmetry Broken Bi1−xSbx (012) with High Spin Hall Conductivity

open access: yesAdvanced Materials, EarlyView.
Crystal orientation and domain engineering enable bulk mirror symmetry breaking in Bi1−xSbx, resulting in ultralow current‐induced switching of perpendicular magnetization without an external field. By exploiting single‐domain Bi1−xSbx (012), the authors demonstrate an out‐of‐plane spin Hall conductivity of ∼1.12×105ℏ2eΩ−1m−1$ \sim \!1.12 \ensuremath ...
Seungwon Rho   +6 more
wiley   +1 more source

Mangán eloszlásának vizsgálata biológiai mintákban LA-ICP-MS módszerrel

open access: yes, 2019
Diplomamunkámban módszert dolgoztam ki biológiai szövetmináták mangán tartalmának és eloszlásának vizsgálatára LA-ICP-MS módszerrel. A vizsgálatok során hentesüzletből származó veséből készítettem metszetet, majd szárazjégen fagyasztottam és ezt követően
Braun, Ádám
core  

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