Zircon solubility and zirconium complexation in H2O+ Na2O+ SiO2±Al2O3 fluids at high pressure and temperature

M Wilke, C Schmidt, J Dubrail, K Appel… - Earth and Planetary …, 2012 - Elsevier
Zircon is an important host mineral for many high-field strength elements (HFSE), particularly
Zr and Hf. Thus, its solubility in geologic fluids at high pressure and temperature plays an …

A general Monte Carlo simulation of energy-dispersive X-ray fluorescence spectrometers—Part 6. Quantification through iterative simulations

…, VA Solé, L Vincze, MS del Rio, K Appel… - … Acta Part B: Atomic …, 2013 - Elsevier
A quantification tool for energy-dispersive X-ray fluorescence (ED-XRF) spectral data is
presented, based on the application of Monte Carlo simulations in an iterative, inverse manner. …

Femtosecond X‐Ray Diffraction of Laser‐Shocked Forsterite (Mg2SiO4) to 122 GPa

…, CA Bolme, VB Prakapenka, K Appel… - Journal of …, 2021 - Wiley Online Library
The response of forsterite, Mg 2 SiO 4 , under dynamic compression is of fundamental
importance for understanding its phase transformations and high‐pressure behavior. Here, we …

[HTML][HTML] The high energy density scientific instrument at the European XFEL

U Zastrau, K Appel, C Baehtz, O Baehr… - Journal of synchrotron …, 2021 - scripts.iucr.org
The European XFEL delivers up to 27000 intense (>1012 photons) pulses per second, of
ultrashort (≤50 fs) and transversely coherent X-ray radiation, at a maximum repetition rate of …

A general Monte Carlo simulation of energy dispersive X-ray fluorescence spectrometers—Part 5: Polarized radiation, stratified samples, cascade effects, M-lines

…, MS del Rio, P Brondeel, G Silversmit, K Appel… - … Acta Part B: Atomic …, 2012 - Elsevier
A general Monte Carlo code for the simulation of energy dispersive X-ray fluorescence (ED-XRF)
spectrometers is presented. As a significant extension to existing Monte Carlo codes, …

Revealing hidden paint layers in oil paintings by means of scanning macro-XRF: a mock-up study based on Rembrandt's “An old man in military costume”

M Alfeld, W De Nolf, S Cagno, K Appel… - Journal of Analytical …, 2013 - pubs.rsc.org
Over the past several decades the oeuvre of Rembrandt has been the subject of extensive
art historical and scientific investigations. One of the most striking features to emerge is his …

Combined bromine and chlorine release from large explosive volcanic eruptions: A threat to stratospheric ozone?

S Kutterolf, TH Hansteen, K Appel, A Freundt… - …, 2013 - pubs.geoscienceworld.org
Large explosive volcanic eruptions inject gases, aerosols, and fine ashes into the stratosphere,
potentially influencing climate. Emissions of chlorine (Cl) and bromine (Br) from such …

Identification and optimization of PrsA in Bacillus subtilis for improved yield of amylase

…, D Becher, M Gjermansen, PF Hallin, KF Appel… - Microbial cell …, 2019 - Springer
Background PrsA is an extracytoplasmic folding catalyst essential in Bacillus subtilis.
Overexpression of the native PrsA from B. subtilis has repeatedly lead to increased amylase yields. …

Scanning XRF investigation of a Flower Still Life and its underlying composition from the collection of the Kröller–Müller Museum

…, F Vanmeert, K Janssens, J Dik, K Appel… - Applied Physics A, 2013 - Springer
Vincent van Gogh (1853–1890) can be considered to be one of the most influential artists in
the history of European painting and most of his life is well documented in his letters to his …

The enhanced element enrichment in the supercritical states of granite–pegmatite systems

R Thomas, P Davidson, K Appel - Acta Geochimica, 2019 - Springer
In this paper, we show that supercritical fluids have a greater significance in the generation
of pegmatites, and for ore-forming processes related to granites than is usually assumed. We …