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Université de Fribourg

It Takes Two : Instrumenting the Interaction between In-Memory Databases and Solid-State Drives

Lerner, Alberto ; Kwak, Jaewook ; Lee, Sangjin ; Park, Kibin ; Song, Yong Ho ; Cudré-Mauroux, Philippe

In: CIDR 2020, 10th Conference on Innovative Data Systems Research, Amsterdam, The Netherlands, January 12-15, 2020, Online Proceedings, 2020, p. 1-8

In-memory databases rely on non-volatile storage devices for services such as durability and recovery. SSDs can provide the high-performance these services require. When performance problems occur, however, SSDs offer no mechanism to help analyze them. The only alternative is to instrument the database side of the problem and conjecture about what might be the cause of performance...

Haute école de gestion de Genève

How much can bulk stores help reduce carbon footprint by limiting plastic food packaging ?

Jarel Rodriguez, Anaïs ; Milet, Emmanuel (Dir.)

Mémoire de bachelor : Haute école de gestion de Genève, 2020 ; TDIBM 67.

This report focuses on the quantity of food packaging waste consumed by an average single individual, residing in Switzerland. It is based on the household budget survey published by the Federal Statistical Office (FSO). This budget survey mentions the food quantities monthly consumed by a single individual and thus, the packaging waste could be computed accordingly. The objective is to compare...

Université de Fribourg

Tissue-specific transcription footprinting using RNA PoI DamID (RAPID) in Caenorhabditis elegans

Gómez-Saldivar, Georgina ; Osuna-Luque, Jaime ; Semple, Jennifer I. ; Glauser, Dominique A. ; Jarriault, Sophie ; Meister, Peter

In: Genetics, 2020, vol. 216, no. 4, p. 931–945

Differential gene expression across cell types underlies development and cell physiology in multicellular organisms. Caenorhabditis elegans is a powerful, extensively used model to address these biological questions. A remaining bottleneck relates to the difficulty to obtain comprehensive tissue-specific gene transcription data, since available methods are still challenging to execute and/or...

Université de Fribourg

In situ deprotection of polymeric binders for solution‐processible sulfide‐based all‐solid‐state batteries

Lee, Jieun ; Lee, Kyulin ; Lee, Taegeun ; Kim, Hyuntae ; Kim, Kyungsu ; Cho, Woosuk ; Coskun, Ali ; Char, Kookheon ; Choi, Jang Wook

In: Advanced Materials, 2020, p. 2001702

Sulfide‐based all‐solid‐state batteries (ASSBs) have been featured as promising alternatives to the current lithium‐ion batteries (LIBs) mainly owing to their superior safety. Nevertheless, a solution‐based scalable manufacturing scheme has not yet been established because of the incompatible polarity of the binder, solvent, and sulfide electrolyte during slurry preparation. This...

Université de Fribourg

Pathogenicity genomic island-associated CrpP-like fluoroquinolone-modifying enzymes among Pseudomonas aeruginosa clinical isolates in Europe

Ortiz de la Rosa, José Manuel ; Nordmann, Patrice ; Poirel, Laurent

In: Antimicrobial Agents and Chemotherapy, 2020, vol. 64, no. 7, p. -

Many transferable quinolone resistance mechanisms have been identified in Gram- negative bacteria. The plasmid-encoded 65-amino-acid-long ciprofloxacin-modifying enzyme CrpP was recently identified in Pseudomonas aeruginosa isolates. We analyzed a collection of 100 clonally unrelated and multidrug-resistant P. aeruginosa clinical isolates, among which 46 were positive for crpP-like genes,...

Université de Fribourg

Analysis method for detecting topological defect dark matter with a global magnetometer network

Masia-Roig, Hector ; A.Smiga, Joseph ; Budker, Dmitry ; Dumont, Vincent ; Gruji, Zoran ; Kim, Dongok ; Kimball, Derek F. Jackson ; Lebedev, Victor ; Monroy, Madeline ; Pustelny, Szymon ; Scholtes, Theo ; Segura, Perrin C. ; Semertzidi, Yannis K. ; Shin, Yun Chang ; Stalnaker, Jason E. ; Sulai, Ibrahim ; Weis, Antoine ; Wickenbrock, Arne

In: Physics of the Dark Universe, 2020, vol. 28, p. 100494

The Global Network of Optical Magnetometers for Exotic physics searches (GNOME) is a network of time-synchronized, geographically separated, optically pumped atomic magnetometers that is being used to search for correlated transient signals heralding exotic physics. GNOME is sensitive to exotic couplings of atomic spins to certain classes of dark matter candidates, such as axions. This work...

Université de Fribourg

Covalent triazine frameworks incorporating charged polypyrrole channels for high-performance lithium–sulfur batteries

Kim, Jiheon ; Elabd, Ahmed ; Chung, Sung-Yoon ; Coskun, Ali ; Choi, Jang Wook

In: Chemistry of Materials, 2020, vol. 32, no. 10, p. 4185–4193

Organosulfur polymers have emerged as promising electrode materials for lithium– sulfur (Li–S) batteries, mainly because of their ability to incorporate and stabilize high sulfur content. The low ionic and electronic conductivity of these polymers, however, limit their cycling performance at high active mass loadings. Moreover, Li–polysulfide (Li–PS) shuttling, a fatal phenomenon in...

Université de Fribourg

Hierarchically porous reduced graphene oxide coated with metal–organic framework hkust-1 for enhanced hydrogen gas affinity

Song, Kyung Seob ; Kim, Daeok ; Coskun, Ali

In: ACS Applied Nano Materials, 2020, vol. 3, no. 2, p. 985–991

Metal–organic frameworks (MOFs) are crystalline porous materials that have been actively explored for various gas storage, separation, and conversion applications because of their structural tunability. While the micropores (<2 nm) in MOFs are essential for increased gas affinity, these small pores significantly decrease the mass-transport kinetics. One way to address this challenge is to ...

Université de Fribourg

Independent introductions of hedgehogs to the North and South Island of New Zealand

Pipek, Pavel ; Pyšek, Petr ; Bacher, Sven ; Bolfíková, Barbora Černá ; Hulme, Philip E.

In: New Zealand Journal of Ecology, 2020, vol. 44, no. 1, p. -

According to the most recent (2005) compendium on the history of the European hedgehog (Erinaceus europaeus) in New Zealand, this small insectivorous mammal was first brought from Europe to the South Island in the 19th century. This introduction has been presumed to be the source of hedgehogs that subsequently spread to the North Island. This view was informed by the absence of hedgehogs in...

Université de Fribourg

The relationship between linguistic ability, multilingualism, and dementia

van den Noort, Maurits ; Vermeire, Katrien ; Staudte, Heike ; Perriard, Benoît ; Bosch, Peggy ; Lim, Sabina

In: Journal of Alzheimer’s Disease, 2019, vol. 72, no. 4, p. 1041–1044

In a recent article of the Journal of Alzheimer’s Disease, Hack et al. (2019) argue that linguistic ability rather than multilingualism is a significant predictor of dementia. In their longitudinal study, they investigated 325 religious sisters who were older than 75 years of age. Self-reports were used in order to determine multilingualism. They found that speaking two or three languages...