Buscador de Tesis y publicaciones académicas

Unveiling mineral biosignatures by combining multiscale structure and geochemistry using SAXS/WAXS/XRF

Tilman GRUNEWALD · Pablo DEL BUEY FERNÁNDEZ · Manfred BURGHAMMER · Lara MALDANIS CERQUEIRA PERES · y 2 más

Microbially influenced sedimentary rocks can provide valuable insights about the rise and evolution of life on Earth. Still, while mineral biosignatures are considered more resilient than organic ones, the challenge for their study relies on identifying and differentiating the biogenic features from structures generate...

Study of inversion symmetry breaking in a ferroelectric/insulating K0.5Na0.5NbO3/SrTiO3 2DEG

MARTANDO RATH · Marco SALLUZZO · Nicholas BROOKES · Yu CHEN · y 2 más

First principle calculations predict the formation of a 2D-electron gas (2DEG) at the (001) interface between SrO-terminated SrTiO3 and ferroelectric (FE) KNN, which has the peculiar property to be on/off switchable by the direction of the KNN FE-polarization. This is very promising in view of non-volatile electronic a...

In-situ structural changes of active material for battery anode under exposure to binder

Jon Otto FOSSUM · Vadim DIADKIN · Barbara PACAKOVA · Leander MICHELS (ORCID: 0000-0002-0023-681X) · y 1 más

The proposal is focused on exploring the behaviour of carbonaceous material for fabrication of anodes for Li-ion batteries. The intended aim is to study the structure evolution of the porous, activated carbon when exposed to a binder or different binders, to explore how the pores change after exposure. The interaction...

Transformation-induced plasticity in zirconia-based ceramics during in-situ microLaue with microcompression and heating: cyclic testing of C

Jérôme CHEVALIER · Jean-Sebastien MICHA · ODILE ROBACH · Solène DASSONNEVILLE · y 3 más

Ceramic materials are typically elastic and brittle at room temperature, lacking ductility due to limited dislocation mobility. However, zirconia-based ceramics, especially those doped with ceria, can display plasticity via a martensitic phase transformation (tetragonal to monoclinic) similar to transformation induced...

Alcohol-associated liver disease in Asian Americans: the case for disaggregated analysis

Muhammad Ali, Tariq · Madiha, Khan · Aiman Fatima, Malik

Measuring exciton polaritons in lithium triborate (LBO) by x-ray parametric down-conversion

Blanka DETLEFS (ORCID: 0000-0002-9768-647X) · Tom LIEDKE · Xenia BROCKMUELLER · Christina BOEMER · y 3 más

In previous experiments on x-ray parametric down-conversion (XPDC), we successfully resolved the splitting into highly asymmetric (i.e., x-ray and EUV) photon pairs. We observed remarkable scattering features that revealed the hybridization of this EUV photon with matter, thus forming an EUV polariton. In this way, XPD...

Entropy-driven sensor deployment and source detection in hypergraphs

Qiao Ke · Chengjun Zhang · Chuang Liu · Mingxia Jing · y 2 más

Identifying the diffusion source in complex networks is critical for understanding and controlling epidemic spread. In realistic settings, full observation of node states is rarely available, making sensor-based source detection a practical alternative. However, existing sensor-based methods are often confined to simpl...

Asymptotic properties of non-relativistic limit for pseudo-relativistic Hartree equations

Pan Chen · Vittorio Coti Zelati · Yuanhong Wei

In this paper, we study the asymptotic behavior of energy and action ground states to the following pseudo-relativistic Hartree equation \[ \left(\sqrt{-c^2Δ+m^2c^4}-mc^2\right)u + λu = \left(|x|^{-1}*|u|^2\right)u \] as the speed of light $c\to\infty$. We obtain an asymptotic expansion of the ground state as $c \to \i...

Explicit ensemble learning surrogate for joint chance-constrained optimal power flow

Amir Bahador Javadi · Amin Kargarian

The increasing penetration of renewable generation introduces uncertainty into power systems, challenging traditional deterministic optimization methods. Chance-constrained optimization offers an approach to balancing cost and risk; however, incorporating joint chance constraints introduces computational challenges. Th...

Bridging the gap between cellular and whole body imaging using Hierarchical Phase-Contrast Tomography: HiP-CT

Paul TAFFOREAU · Theresa URBAN · Claire WALSH · EUNJUE YI · y 7 más

Humans and other large organisms are three-dimensional multiscale biological systems where large scale function and structure are dependent on the macrostructure’s interconnectivity down to the cellular and subcellular level. Using the exceptional coherence provided by the ESRF-EBS, we have demonstrated that propagatio...