Documents in process

Parton densities are obtained from a solution of the extended DGLAP-type evolution equation that includes both QCD and electroweak contributions. The equations are solved using the Parton-Branching (PB) approach, and the evolution is performed at next-to-leading order for QCD partons and leading order for electroweak bosons. [...]

In 1990, Rembrandt’s The Night Watch was attacked with concentrated sulphuric acid. This studyreassesses the affected area and aims to identify and characterise any secondary degradationproducts, as well as any challenges for the conservation treatment. [...]

Overcoming the slow kinetics of the oxygen evolution reaction at the anode is a key challenge for the production of hydrogen via electrolysis. This reaction operates at very positive potentials, where the electrocatalyst is exposed to highly oxidative conditions and prone to potential-dependent transformation of the near-surface region. [...]

High-throughput X-ray diffraction (XRD) techniques are revolutionizing materials science by enabling the rapid collection ofhundreds or thousands of diffraction patterns in a single experiment. However, traditional analytical methods like Rietveld refinementbecome a significant bottleneck for quantifying phase fractions from such large datasets, due to their time-consuming,expert-driven nature. [...]

Understanding the nature of active sites in heterogeneous catalysts and how to create them purposefully opens up the possibility of tailored catalyst design. Here we report mixed-valence subnanometre CoOx clusters, consisting of a few metallic Co⁰ atoms on top of Co²⁺, bound to a silicalite-1 support through lattice oxygen atoms as active species for non-oxidative propane dehydrogenation (PDH) to propene. [...]

Investigating materials under extreme pressure using diamond anvil cells (DACs) requires very small samples. X-ray diffraction studies of such samples therefore require beams focused to <5 μm. [...]

CK2α and CK2α’, two paralogous members of the human kinome, are catalytic subunits of protein kinase CK2. Together with the regulatory subunit CK2β, they form heterotetrameric holoenzymes. [...]

The success of mRNA lipid nanoparticles (LNPs) used in the COVID-19 vaccines has demonstrated the significance of pharmaceutical products utilizing nanoparticle-based drug delivery systems in global healthcare. For the assessment of the safety, efficacy, and quality of these complex, multicomponent systems, it is important to consider not only the properties of the individual components but also their colloidal organization. [...]