Results 101 to 110 of about 3,288 (209)

Sulfur isotope analysis of aerosol particles by NanoSIMS

open access: yes, 2007
A new method to measure the sulfur isotopic composition of individual aerosol particles by NanoSIMS has been developed and tested on several standards such as barite (BaSO4), anhydrite (CaSO4), gypsum (CaSO4·2H2O), mascagnite ((NH4)2SO4), epsomite (MgSO4·7H2O), magnesium sulfate (MgSO4·xH2O), thenardite (Na2SO4), boetite (K2SO4) and cysteine (an amino ...
openaire   +4 more sources

NanoSIMS data, 13C assimilation in the symbiotic dinoflagellates and their foraminiferal host (Orbulina universa) [PDF]

open access: yes, 2018
Here we performed pulse-chase experiments with 13C-enriched dissolved inorganic carbon, followed by TEM and quantitative NanoSIMS isotopic imaging to visualize photosynthetic C assimilation by individual symbiotic dinoflagellates and subsequent ...
Spero, Howard J   +5 more
core   +1 more source

Simultaneous Visualization of Enzymatic Activity in the Cytoplasm and at Polyphosphate Inclusions in Beggiatoa sp. Strain 35Flor Incubated with 18O-Labeled Water

open access: yesmSphere, 2018
Here we report on a new nanoscale secondary ion mass spectrometry (nanoSIMS) approach based on enzyme-mediated oxygen isotope exchange, which combines the visualization of general metabolic activity in the cytoplasm with insights into the activity of ...
Simon Langer   +2 more
doaj   +1 more source

Carbon assimilation and accumulation of cyanophycin during the development of dormant cells (akinetes) in the cyanobacterium Aphanizomenon ovalisporum

open access: yesFrontiers in Microbiology, 2015
Akinetes are spore-like non-motile cells that differentiate from vegetative cells of filamentous cyanobacteria from the order Nostocales. They play a key role in the survival and distribution of these species and contribute to their perennial blooms ...
Assaf eSukenik   +5 more
doaj   +1 more source

NanoSIMS investigation of passive oxide films on high-Cr cast iron [PDF]

open access: yes, 2013
The discrete depth characteristics of thin passive oxide films were investigated using high-resolution electron microprobe and nanoscale secondary ion mass spectrometry (NanoSIMS).
Stachowiak, G.   +3 more
core   +1 more source

A NanoSIMS Investigation on Timescales Recorded in Volcanic Quartz From the Silicic Chon Aike Province (Patagonia)

open access: yesFrontiers in Earth Science, 2018
Textural and chemical differences in coeval rhyolitic effusive and explosive eruptions are commonly observed, and numerical models predict different timescales for the eruption of crystal-rich mushes versus crystal-poor magmas. We compare quartz zonation
Susanne Seitz   +6 more
doaj   +1 more source

Intracellular isotope localization in Ammonia sp. (Foraminifera) of oxygen-depleted environments: results of nitrate and sulfate labeling experiments

open access: yesFrontiers in Microbiology, 2016
Some benthic foraminiferal species are reportedly capable of nitrate storage and denitrification, however, little is known about nitrate incorporation and subsequent utilization of nitrate within their cell.
Hidetaka eNomaki   +9 more
doaj   +1 more source

High-resolution imaging of complex crack chemistry in reactor steels by NanoSIMS [PDF]

open access: yes, 2008
High-resolution analysis using a Cameca NanoSIMS 50 has been used to map the oxide chemistry in intergranular cracks in stainless steels. The technique has proven ideal for this type of sample, as it is able to discern between the different oxide layers ...
Yamada, T   +7 more
core   +1 more source

Accumulation and distribution of cadmium at organic-mineral micro-interfaces across soil aggregates

open access: yesEcotoxicology and Environmental Safety
Soil amendments are crucial in regulating cadmium (Cd) distribution as aggregates of varying sizes have different capacities to retain soil Cd. Directly observing the Cd distribution within aggregates and understanding their interactions with minerals ...
Qi Li   +7 more
doaj   +1 more source

Viral nanoSIMS sample preparation v1

open access: yes
Sample preparation nanoscale secondary ion mass spectrometry (nanoSIMS) analysis of viral suspensions. This protocol is inspired by Pasulka, A. L., Thamatrakoln, K., Kopf, S. H., Guan, Y., Poulos, B., Moradian, A., et al. (2018). Interrogating marine virus-host interactions and elemental transfer with BONCAT and nanoSIMS-based methods.Environmental ...
Aditi K. Narayanan, Alon Philosof
openaire   +1 more source

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