Buscador de Tesis y publicaciones académicas

Magnetic diffraction in several systems

Baledent, Victor · Beutier, Guillaume · Chahine, Gilbert · Faure, Quentin

The plan is to test a few interesting systems. Among them, we plan to test magnetic powder diffraction. Other tests are performed on thin films and bulk. The set-up is kept as simple as possible : just a cryostat to enter the antiferromagnetic phases.

Phase transformation of clinopyroxene to majorite in subsolidus pyrolite in the Earth’s mantle transition zone by in situ x-ray diffraction

Rondi DAVIES · Anja ROSENTHAL

The mineralogy and phase transitions in the upper mantle have been determined from models that rely on seismic data and high-pressure experiments. However, these experiments have been run at temperatures ~500°C hotter than the ambient mantle. This significantly hinders our understanding of the minerals present and thei...

Unravel the kinetics of eutectoid decomposition in additively manufactured Ti-8.5Cu alloy

Artjom BOLENDER · Tong ZHERUI · Marius HORN · Dong QIU · y 4 más

Dynamic microstructural evolution is one of the key characteristics during laser additive manufacturing (LAM) due to its rapid thermal cycles. However, the change of microstructure due to solid-solid phase transformations is too fast to track using conventional characterization techniques. In situ synchrotron X-ray dif...

Swiss consortium in macromolecular X-ray crystallography structure determination for academic researchers: EPFL, UNIL, UNIGE, Zurich and SL

Florence POJER · Philippe CARPENTIER

This proposal builds upon the foundation established in BAG MX 2521 and MX 2644 and represents a collaborative effort among prominent Swiss academic institutions, including EPFL, UNIL, UNIGE, university of Zurich and SLS. Under the leadership of Dr. Florence Pojer, the head of the Protein Production and Structure core...

Enhanced biogas production and hydrogen sulfide suppression in anaerobic digestion via ROS generated by in situ H2O2 dosing

Jiasi Sun · Soyoung Park · Zhen He

Anaerobic digestion (AD) of sewage sludge is often limited by slow hydrolysis and low methane production efficiency due to the high fraction of particulate organic matter. In this study, the effects of controlled in situ H2O2 dosing on AD of sewage sludge were investigated and the underlying mechanisms for enhanced met...

Understanding the role of Cu into the reactivity and stabilization of the prototype High Entropy Oxide Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O

Martina FRACCHIA (ORCID: 0000-0001-5366-153X) · Giulia MARANINI · Catherine DEJOIE · Mauro CODURI

We propose to study reactivity and stabilization of the high entropy oxide Mg0.2Co0.2Ni0.2Cu0.2Zn0.2O, by applying high instrumental and spatial resolution XRD to diffusion couples (DCs). Since Cu is deemed to be the destabilizing element in this system, we focus on the reaction between CuO and the quaternary oxide (Mg...

Fatigue life and durability of wood material under mixed-mode fracture with viscoelastic and moisture-dependent effects: A finite element modeling approach

Nguedjio, Loic Chrislin · Pitti, Rostand Moutou · Blaysat, Benoit · Recho, Naman · y 1 más

A pragmatic, demand-driven framework to prioritise critical raw material recycling

Margot Coppens · Jana Deckers · Wim Van Opstal · Tom Rommens · y 1 más

Every three years, the European Commission publishes a list of critical raw materials (CRMs) based on economic importance and supply risk. Boosting recovery rates is a strategy for criticality mitigation, but not equally relevant for all CRMs. This study develops a pragmatic, demand-driven framework to prioritise CRMs...

Enabling deep understanding of Power-to-Ammonia catalysts for renewable fuel production with the help of transient operando photon-in/photon

VASYL MARCHUK · Dmitry DORONKIN · Jan-Dierk GRUNWALDT · Maya LUDWIG · y 1 más

This LTP is motivated by systematic studies on ammonia synthesis catalysts under the realistic conditions of the Haber-Bosch process, as employed for the production of sustainable renewable ammonia at offshore wind power plants. Over the course of 6 beamtime scheduling periods, electronic and geometric structure of act...

Advancing automated phase recognition in cataract surgery through the SICS-155 challenge

Simon Mueller · Bhuvan Sachdeva · Singri Niharika Prasad · Raphael Lechtenboehmer · y 23 más

Manual Small-Incision Cataract Surgery (SICS) is a prevalent technique in low- and middle-income countries (LMICs). Automated analysis of SICS videos based on artificial intelligence (AI) would benefit self-evaluation, training, monitoring, and ultimately facilitate computer aided surgical assistance. However, this pro...