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Université de Fribourg

CPG graphs : Some Structural and Hardness Results

Champseix, Nicolas ; Galby, Esther ; Munaro, Andrea ; Ries, Bernard

In: Discrete Applied Mathematics, 2021, vol. 290, p. 17-35

In this paper we continue the systematic study of Contact graphs of Paths on a Grid (CPG graphs) initiated in Deniz et al. (2018). A CPG graph is a graph for which there exists a collection of pairwise interiorly disjoint paths on a grid in one-to-one correspondence with its vertex set such that two vertices are adjacent if and only if the corresponding paths touch at a grid-point. If every...

Consortium of Swiss Academic Libraries

Lagrangian Reductions and Integrable Systems in Condensed Matter

Gay-Balmaz, François ; Monastyrsky, Michael ; Ratiu, Tudor

In: Communications in Mathematical Physics, 2015, vol. 335, no. 2, p. 609-636

Consortium of Swiss Academic Libraries

A bright future for magnetic resonance

Bodenhausen, Geoffrey

In: Resonance, 2015, vol. 20, no. 11, p. 1066-1074

Université de Fribourg

Free-standing graphene oxide mid-infrared polarizers

Zheng, Xiaorui ; Xu, Bing ; Li, Shuo ; Lin, Han ; Qiu, Ling ; Li, Dan ; Jia, Baohua

In: Nanoscale, 2020, vol. 12, no. 21, p. 11480–11488

Mid-infrared (MIR) represents a crucial spectral region for applications in spectroscopy, sensing, imaging, security and industry screening, owing to the strong characteristic vibrational transitions of many important molecules. However, the current MIR compatible materials are fragile, hazardous, and costly, which hampers the performance of MIR devices. Here, we developed a versatile...

Université de Fribourg

Isometry Lie algebras of indefinite homogeneous spaces of finite volume

Baues, Oliver ; Globke, Wolfgang ; Zeghib, Abdelghani

In: Proceedings of the London Mathematical Society, 2019, vol. 119, no. 4, p. 1115–1148

Let 𝔤 be a real finite‐dimensional Lie algebra equipped with a symmetric bilinear form ⟨·,·⟩ . We assume that ⟨·,·⟩ is nil‐invariant. This means that every nilpotent operator in the smallest algebraic Lie subalgebra of endomorphisms containing the adjoint representation of 𝔤 is an infinitesimal isometry for ⟨·,·⟩ . Among these Lie algebras are the isometry Lie...

Università della Svizzera italiana

HTLV-1 propels thymic human T cell development in “human immune system” Rag2-/- gamma c-/- Mice

Villaudy, Julien ; Wencker, Mélanie ; Gadot, Nicolas ; Gillet, Nicolas A. ; Scoazec, Jean-Yves ; Gazzolo, Louis ; Manz, Markus G. ; Bangham, Charles R. M. ; Duc Dodon, Madeleine

In: Plos pathogens, 2011, vol. 7, no. 9, p. e1002231

Alteration of early haematopoietic development is thought to be responsible for the onset of immature leukemias and lymphomas. We have previously demonstrated that TaxHTLV-1 interferes with ß- selection, an important checkpoint of early thymopoiesis, indicating that human T-cell leukemia virus type 1 (HTLV-1) infection has the potential to perturb thymic human αβ T-cell development. To...

Université de Fribourg

Reproduction, fat metabolism, and life span: what is the connection?

Hansen, Malene ; Flatt, Thomas ; Aguilaniu, Hugo

In: Cell Metabolism, 2013, vol. 17, no. 1, p. 10–19

Reduced reproduction is associated with increased fat storage and prolonged life span in multiple organisms, but the underlying regulatory mechanisms remain poorly understood. Recent studies in several species provide evidence that reproduction, fat metabolism, and longevity are directly coupled. For instance, germline removal in the nematode Caenorhabditis elegans promotes longevity in part...

Consortium of Swiss Academic Libraries

Dark Matter Searches

Pretzl, K.

In: Space Science Reviews, 2007, vol. 130, no. 1-4, p. 63-72

Consortium of Swiss Academic Libraries

Milky Way Gas Dynamics

Englmaier, Peter ; Gerhard, Ortwin

In: Celestial Mechanics and Dynamical Astronomy, 2006, vol. 94, no. 4, p. 369-379