The authors obtained oriented Fe-XANES spectra on three amphibole bundles of fiber (i.e., asbestiform morphology), two single-crystal fragments (i.e., nonasbestiform morphology), and one aggregate of thousands of smaller particles (termed herein a “puffball”) by use of a spindle stage mounted on beamline X26A, National Synchrotron Light Source, Brookhaven National Lab.
Here, by using in situ atomic-force microscopy (AFM) to visualize the dissolution of calcite (1014) faces, the authors show that the presence of G6P results in morphology changes of etch pits from the typical rhombohedral to a fan-shaped form.
The behavior of the chemical potential of the species CaCO3 and MgCO3 in proximity of the (10.4) crystal face of calcite and magnesite is determined at the quantum–mechanical level by adopting a recent calculation strategy conceived in our research laboratory. A very peculiar trend of this quantity from the (10.4) surface to the center of the calcite and magnesite crystals was observed.
135Cs/137Cs is a potential tracer for radiocesium source identification. However, due to the challenge to measure 135Cs, there were no 135Cs data available for Japanese environmental samples before the Fukushima Daiichi Nuclear Power Plant (FDNPP) accident.
Ath Godelitsas's insight:
According to recent studies, the total atmospheric released amounts of 134Cs, 135Cs, 136Cs, and 137Cs from the FDNPP accident were estimated to be 11.8–18, 6.74 × 10−5, 2.2–2.6, and 13–36 PBq, respectively.
The formation pathways of gypsum remain uncertain. Here, using truly in situ and fast time-resolved small-angle X-ray scattering, the authors quantify the four-stage solution-based nucleation and growth of gypsum (CaSO4·2H2O), an important mineral phase on Earth and Mars.
In this work the authors employ the Kinetic Monte Carlo (KMC) approach to model carbonate dissolution at the nanometer–micron scale range and to access quantitative relationships between the variety of surface reactive sites and experimentally observed spatiotemporal rate variance.
In this study, the authors characterized the mechanisms of chromate adsorption on boehmite (γ-AlOOH) using a combination of extended X-ray absorption fine structure (EXAFS) measurements, in situ attenuated total reflectance Fourier transform infrared spectroscopy, and quantum chemical calculations.
• New surface reactivity results on tremolite asbestos by XPS, HR-TEM and ICP-AES • Surface morphology and composition change upon time after incubation at pH 7.4. • Presence of nano-clustered iron explains the high reactivity of these asbestos. • Low amounts of iron act as catalyzer of the ROS production.
The authors show, using in situ atomic force microscopy and complementary techniques, that faceted calcite can grow via a nonclassical particle-mediated colloidal crystal growth mechanism that at the nanoscale mirrors classical ion-mediated growth, and involves a layer-by-layer attachment of amorphous calcium carbonate (ACC) nanoparticles, followed by their restructuring and fusion with the calcite substrate in perfect crystallographic registry. The ACC-to-calcite transformation occurs by an interface-coupled dissolution–reprecipitation mechanism and obliterates or preserves the nanogranular texture of the colloidal growth layer in the absence or presence of organic (macro)molecules, respectively.
The α-radiation stability of biotite mica [general formula: K(Mg,Fe)3(Al,Si3O10)(F,OH)2] has been investigated using the 5 MV tandem pelletron at the University of Manchester’s Dalton Cumbrian Facility (DCF) and both the microfocus spectroscopy (I18) and core X-ray absorption spectroscopy (B18) beamlines at Diamond Light Source (U.K.).
The authors present measurements of ocean-derived particles containing reduced sulfur, detected as elemental sulfur ions (e.g., 32S+, 64S2+), in seven different marine environments using real-time, single particle mass spectrometry; these particles have not been detected outside of the marine environment.
Sharing your scoops to your social media accounts is a must to distribute your curated content. Not only will it drive traffic and leads through your content, but it will help show your expertise with your followers.
How to integrate my topics' content to my website?
Integrating your curated content to your website or blog will allow you to increase your website visitors’ engagement, boost SEO and acquire new visitors. By redirecting your social media traffic to your website, Scoop.it will also help you generate more qualified traffic and leads from your curation work.
Distributing your curated content through a newsletter is a great way to nurture and engage your email subscribers will developing your traffic and visibility.
Creating engaging newsletters with your curated content is really easy.