Results 21 to 30 of about 6,129 (236)

Dissimilatory Fe(III) Reduction Controls on Arsenic Mobilization: A Combined Biogeochemical and NanoSIMS Imaging Approach

Frontiers in Microbiology, 2021
Microbial metabolism plays a key role in controlling the fate of toxic groundwater contaminants, such as arsenic. Dissimilatory metal reduction catalyzed by subsurface bacteria can facilitate the mobilization of arsenic via the reductive dissolution of ...
Rebeca Lopez-Adams, Laura Newsome, Laura Newsome, Katie L. Moore, Katie L. Moore, Ian C. Lyon, Ian C. Lyon, Jonathan R. Lloyd   +7 more
doaj   +2 more sources

Development of Mercury Analysis by NanoSIMS for the Localization of Mercury-Selenium Particles in Whale Liver.

Analytical Chemistry, 2021
Nanoscale secondary ion mass spectrometry (NanoSIMS) is a dynamic SIMS technique, which offers high spatial resolution allowing the mapping of chemical elements at the nanometer scale combined with high sensitivity.
M. Subirana, Lhiam Paton, James Hall, A. Brownlow, E. Krupp, J. Feldmann, D. Schaumlöffel   +6 more
semanticscholar   +3 more sources

NanoSIMS Imaging Reveals the Impact of Ligand-ASO Conjugate Stability on ASO Subcellular Distribution

Pharmaceutics, 2022
The delivery of antisense oligonucleotides (ASOs) to specific cell types via targeted endocytosis is challenging due to the low cell surface expression of target receptors and inefficient escape of ASOs from the endosomal pathway.
Emma Kay, Rouven Stulz, Cécile Becquart, Jelena Lovric, Carolina Tängemo, Aurélien Thomen, Dženita Baždarević, Neda Najafinobar, Anders Dahlén, Anna Pielach, Julia Fernandez-Rodriguez, Roger Strömberg, Carina Ämmälä, Shalini Andersson, Michael Kurczy   +14 more
doaj   +2 more sources

Visualizing Mineral-Associated Organic Matters in Long-Term Fertilization Treated Soils by NanoSIMS and SR-FTIR

Frontiers in Soil Science, 2022
Formation of mineral-associated organic matters is essential for long-term soil organic carbon preservation. However, the regulation pathways of mineral-associated organic matters in soils remains largely undescribed, especially at the submicron scale ...
Guang-Hui Yu, Sha Liu
doaj   +2 more sources

Multimodal Imaging of Chemically Fixed Cells in Preparation for NanoSIMS

Analytical Chemistry, 2016
In this work, we have employed time-of-flight secondary ion mass spectrometry (ToF-SIMS) to image chemically fixed adrenal cells prepared for transmission electron microscopy (TEM) and subsequent high-spatial-resolution NanoSIMS imaging. The sample fixation methodology preserves cell morphology, allows analysis in the ultrahigh vacuum environment, and ...
Jelena, Lovrić, Per, Malmberg, Bengt R, Johansson, John S, Fletcher, Andrew G, Ewing   +4 more
openaire   +3 more sources

Reciprocal transport of carbon and nitrogen between plants and the hyphosphere microbiome in a temperate grassland. [PDF]

New Phytol
Overview of the experimental design and 13CO2 pulse‐labeling approach in the field. Summary Despite its relevance for plant nutrient acquisition, the role of the hyphosphere in structuring fungal–bacterial networks and mediating carbon–nitrogen (C–N) exchange under field conditions remains unclear.
Brandt L, Abrahão A, Wicht AC, Schulz S, Schloter M, Schweizer S, Marhan S, Kandeler E.   +7 more
europepmc   +2 more sources

Spatiotemporal Regulation of N₂ Fixation and Photosynthesis in Trichodesmium: New Insights From mRNA CARD-FISH and nanoSIMS. [PDF]

Environ Microbiol
Examining the coordination of the O2‐sensitive N2 fixation process with photosynthesis at single‐cell level in the filamentous Trichodesmium, we find spatio‐temporal separation of N2 fixation and photosynthesis at gene expression and fixation level as well as indications for rapid intercellular transport followed by co‐localized storage of C and N ...
Rebeca LA, Anxhela H, Anežka M, Michiel K, Kasia P, Ondřej P, Ľuboš P, Meri E.   +7 more
europepmc   +2 more sources

Active Phase of Nickel Electrocatalysts Driving Alkaline Hydrogen Evolution. [PDF]

Adv Mater
Using depth‐resolved and operando spectroscopic measurements coupled with electrochemical mass spectrometry, the authors uncover the critical role of sub‐surface oxidised species in increasing the activity and durability of Ni‐based cathodes for hydrogen evolution.
Wang Y, Ender E, Kumar S, Tseng C, Yang G, Ye B, Liang C, Yu Y, West N, Chauhan I, Ng JH, Halder S, Ji SG, Held G, Ryan MP, Moore KL, Walton AS, Rao RR.   +17 more
europepmc   +2 more sources

Dolomitic Microfossil Preservation in a Cryogenian Microbial Reef, Arkaroola (South Australia). [PDF]

Geobiology
ABSTRACT Microbial dolostones that now form the Arkaroola reef, northern Adelaide Rift Complex, and were deposited during the Cryogenian interglacial period, display a wide range of meso‐scale stromatolite morphotypes in outcrop. Microcharacterisation involving optical microscopy, combined scanning electron microscopy and energy dispersive spectroscopy
Champenois F, Corkeron ML, George AD.
europepmc   +2 more sources

Imaging of organic signals in individual fossil diatom frustules with nanoSIMS and Raman spectroscopy [PDF]

, 2021
The organic matter occluded in the silica of fossil diatom frustules is thought to be protected from diagenesis and used for paleoceanographic reconstructions.
Polerecky, Lubos, Das, Gobind, Akse, Shaun P., General geochemistry, Geochemistry, Pichevin, Laetitia, Agustí, Susana, Middelburg, Jack J.   +7 more
core   +2 more sources