51,965 Works

A Fast Testing Method to Objectively Quantify the Stiffness of Stability Boots

Simon Bürgi, Judith Roost, Marco R. Hitz, Peter Schwilch, Bill Taylor & Silvio Lorenzetti
Stability boots can protect the ankle ligaments from overloading after serious injury and facilitate protected movement in order to aid healing of the surrounding soft tissue structures. For comparing different stability shoe designs and prototypes, a reliable and fast testing method (FTM) is required. The aim of this study was to assess the reliability of a novel custom-built device. Six different stability boots were tested in a novel device that allowed body weight to be...

Optimized unrestricted Kohn–Sham potentials from ab initio spin densities

Katharina Boguslawski, Christoph R. Jacob & Markus Reiher
The Journal of Chemical Physics, 138 (4)

Parameter independent low-power heteronuclear decoupling for fast magic-angle spinning solid-state NMR

Asif Equbal, Perunthiruthy K. Madhu, Beat H. Meier, Niels C. Nielsen, Matthias Ernst & Vipin Agarwal
The Journal of Chemical Physics, 146 (8)

Loss of PTPN22 abrogates the beneficial effect of cohousing-mediated fecal microbiota transfer in murine colitis

Marianne R. Spalinger, Marlene Schwarzfischer, Larissa Hering, Ali Shawki, Anica Sayoc, Alina Santos, Claudia Gottier, Silvia Lang, Katharina Bäbler, Annelies Geirnaert, Christophe Lacroix, Gabriel E. Leventhal, Xuezhi Dai, David Rawlings, Andrew A. Chan, Gerhard Rogler, Declan F. McCole & Michael Scharl
Fecal microbiota transfer (FMT) is a very efficient approach for the treatment of severe and recurring C. difficile infections. However, the beneficial effect of FMT in other disorders such as ulcerative colitis (UC) or Crohn’s disease remains unclear. Furthermore, it is currently unknown how disease-associated genetic variants in donors or recipients influence the effect of FMT. We found that bacteria-transfer from wild-type (WT) donors via cohousing was efficient in inducing recovery from colitis in WT...

Extraction of monomer-cluster association rate constants from water nucleation data measured at extreme supersaturations

Chenxi Li, Martina Lippe, Jan Krohn & Ruth Signorell
We utilize recently reported data for water nucleation in the uniform postnozzle flow of pulsed Laval expansions to derive water monomer association rates with clusters. The nucleation experiments are carried out at flow temperatures of 87.0 K and 47.5 K and supersaturations of lnS ∼ 41 and 104, respectively. The cluster size distributions are measured at different nucleation times by mass spectrometry coupled with soft single-photon ionization at 13.8 eV. The soft ionization method ensures...

Water nucleation at extreme supersaturation

Martina Lippe, Satrajit Chakrabarty, Satrajit Chakrabarty, Kyoko K. Tanaka & Ruth Signorell
The Journal of Chemical Physics, 149 (24)

Diurnal variation around an optimum and near-critically high temperature does not alter the performance of an ectothermic aquatic grazer

Tiina Salo, Tabea Kropf, Francis J. Burdon & Otto Seppälä
The growing threat of global climate change has led to a profusion of studies examining the effects of warming on biota. Despite the potential importance of natural variability such as diurnal temperature fluctuations, most experimental studies on warming are conducted under stable temperatures. Here, we investigated whether the responses of an aquatic invertebrate grazer (Lymnaea stagnalis) to an increased average temperature differ when the thermal regime is either constant or fluctuates diurnally. Using thermal response...

Electron attachment to hexafluoropropylene oxide (HFPO)

Mateusz Zawadzki, Alise Chachereau, Jaroslav Kočišek, Christian Franck & Juraj Fedor
We probe the electron attachment in hexafluoropropylene oxide, C3F6O, a gas widely used in plasma technologies. We determine the absolute electron attachment cross section using two completely different experimental approaches: (i) a crossed-beam experiment at single collision conditions (local pressures of 5x10-4 mbar) and (ii) a pulsed Townsend experiment at pressures of 20 - 100 mbar. In the later method, the cross sections are unfolded from the electron attachment rate coefficients. The cross sections derived...

Relaxing the planar assumption: 3D state estimation for an autonomous surface vessel

Gregory Hitz, François Pomerleau, Francis Colas & Roland Siegwart
The International Journal of Robotics Research, 34 (13)

The planar tree packing theorem

Markus Geyer, Michael Hoffmann, Michael Kaufmann, Vincent Kusters & Csaba D. Tóth
Packing graphs is a combinatorial problem where several given graphs are being mapped into a common host graph such that every edge is used at most once. In the planar tree packing problem we are given two trees T1 and T2 on n vertices and have to find a planar graph on n vertices that is the edge-disjoint union of T1 and T2. A clear exception that must be made is the star which cannot...

Pseudorapidity distributions of charged hadrons in xenon-xenon collisions at sNN=5.44 TeV

CMS Collaboration, Albert M. Sirunyan, Malte Backhaus, Lukas Bäni, Pirmin Berger, Nadezda Chernyavskaya, Günther Dissertori, Michael Dittmar, Mauro Donegà, Christian Dorfer, Tirso Alejandro Gomez Espinosa, Christophorus Grab, Dmitry Hits, Thomas Klijnsma, Werner Lustermann, Riccardo A. Manzoni, Matthieu Marionneau, Maren T. Meinhard, Francesco Micheli, Pasquale Musella, Francesca Nessi-Tedaldi, Joosep Pata, Felicitas Pauss, Gaël Perrin, Luca Perrozzi … & Et Al.
Measurements of the pseudorapidity distributions of charged hadrons produced in xenon-xenon collisions at a nucleon-nucleon centre-of-mass energy of sNN=5.44 TeV are presented. The measurements are based on data collected by the CMS experiment at the LHC. The yield of primary charged hadrons produced in xenon-xenon collisions in the pseudorapidity range |η|<3.2 is determined using the silicon pixel detector in the CMS tracking system. For the 5% most central collisions, the charged-hadron pseudorapidity density in the...

Challenging data sets for point cloud registration algorithms

François Pomerleau, Ming Liu, Francis Colas & Roland Y. Siegwart
The International Journal of Robotics Research, 31 (14)

TopoZeko: A MATLAB function for 3-D and 4-D topographical visualization in geosciences

Harry Zekollari
TopoZeko is a MATLAB function for plotting a variety of natural environments with a pronounced topography, such as glaciers, volcanoes and lakes in mountainous regions. This function extends existing MATLAB plotting routines and allows for high-quality 3-D landscape visualization, with a single color defining a featured surface type or with a color scale defining the magnitude of a variable. As an input, only the elevation of the subsurface (typically the bedrock) and the surface are...

Pressure-Induced Hydrogen-Hydrogen Interaction in Metallic FeH Revealed by NMR

Thomas Meier, Florian Trybel, Saiana Khandarkhaeva, Gerd Steinle-Neumann, Stella Chariton, Timofey Fedotenko, Sylvain Petitgirard, Michael Hanfland, Konstantin Glazyrin, Natalia Dubrovinskaia & Leonid Dubrovinsky
Knowledge of the behavior of hydrogen in metal hydrides is the key for understanding their electronic properties. Here, we present an 1H−NMR study of cubic FeH up to 202 GPa. We observe a distinct deviation from the ideal metallic behavior between 64 and 110 GPa that suggests pressure-induced H-H interactions. Accompanying ab initio calculations support this result, as they reveal the formation of an intercalating sublattice of electron density, which enhances the hydrogen contribution to...

Development of the DRoplet Ice Nuclei Counter Zürich (DRINCZ): Validation and application to field collected snow samples

Robert O. David, Maria Cascajo Castresana, Killian P. Brennan, Michael Rösch, Nora Els, Julia Werz, Vera Weichlinger, Lin S. Boynton, Sophie Bogler, Nadine Borduas-Dedekind, Claudia Marcolli & Zamin A Kanji

Shaping Magnetite with Poly-l-arginine and pH: From Small Single Crystals to Large Mesocrystals

Lucas Kuhrts, Elena Macías-Sánchez, Nadezda V. Tarakina, Ann M. Hirt & Damien Faivre
Control over particle size, size distribution, and colloidal stability are central aims in producing functional nanomaterials. Recently, biomimetic approaches have been successfully used to enhance control over properties in the synthesis of those materials. Magnetotactic bacteria produce protein-stabilized magnetite away from its thermodynamic equilibrium structure. Mimicking the bacteria’s proteins using poly-l-arginine we show that by simply increasing the pH, the dimensions of magnetite increase and a single- to mesocrystal transformation is induced. Using synchrotron X-ray...

Sensitivity, stability and future evolution of the world's northernmost ice cap, Hans Tausen Iskappe (Greenland)

Harry Zekollari, Philippe Huybrechts, Noël Brice, Willem J. Van De Berg & Michiel R. Van Den Broeke
In this study the dynamics and sensitivity of Hans Tausen Iskappe (western Peary Land, Greenland) to climatic forcing is investigated with a coupled ice flow–mass balance model. The surface mass balance (SMB) is calculated from a precipitation field obtained from the Regional Atmospheric Climate Model (RACMO2.3), while runoff is calculated from a positive-degree-day runoff–retention model. For the ice flow a 3-D higher-order thermomechanical model is used, which is run at a 250m resolution. A higher-order...

Electronic and vibrational relaxation dynamics of NH3 Rydberg states probed by vacuum-ultraviolet time-resolved photoelectron imaging

Vít Svoboda, Chuncheng Wang, Max Waters & Hans Jakob Wörner
Time-resolved dynamics of high-lying Rydberg states of ammonia (NH3) prepared by using a vacuum ultraviolet (VUV) pump (∼9.3 eV) and an ultraviolet (UV) probe (∼4.7 eV) pulse are reported using photoelectron imaging detection. After photoexcitation, two main features appear in the photoelectron spectrum with vertical binding energies of ∼1.8 eV and ∼3.2 eV and with distinctly different anisotropy parameters β of ∼1.3 and ∼0.7, respectively. This information allows the unambiguous assignment of the respective Rydberg...

Leaf trichomes affect caterpillar feeding in an instar-specific manner

Rupesh R. Kariyat, Sean B. Hardison, Aisling B. Ryan, Andrew G. Stephenson, Consuelo M. De Moraes & Mark C. Mescher
Leaf trichomes play well-established roles in defense against insect herbivores, both as a physical barrier that impedes herbivore movement and by mediating chemical defenses. However, little work has examined how different trichome types influence herbivory by herbivores at different stages of development. We examined whether caterpillar instar and trichome type (glandular or non-glandular) affected the ability of the specialist herbivore caterpillar Manduca sexta to initiate feeding on 11 Solanaceous species exhibiting variation in the density...

Single-cell protein profiling in microchambers with barcoded beads

Lucas Armbrecht, Rafael Sebastian Müller, Jonas Nikoloff & Petra Stephanie Dittrich
Single-cell profiling provides insights into cellular behaviour that macroscale cell cultures and bulk measurements cannot reveal. In the context of personalized cancer treatment, the profiling of individual tumour cells may lead to higher success rates for therapies by rapidly selecting the most efficacious drugs. Currently, genomic analysis at the single-cell level is available through highly sensitive sequencing approaches. However, the identification and quantification of intracellular or secreted proteins or metabolites remains challenging. Here, we introduce...

chloroExtractor: extraction and assembly of the chloroplast genome from whole genome shotgun data

Markus J. Ankenbrand, Simon Pfaff, Niklas Terhoeven, Musga Qureischi, Maik Gündel, Clemens L. Weiss, Thomas Hackl & Frank Förster
The Journal of Open Source Software, 3 (21)

Improving design grammar development and application through network-based analysis of transition graphs

Corinna Königseder, Tino Stankovic & Kristina Shea
Design grammars enable the formal representation of a vocabulary and rules that describehow designs can be synthesized just as the grammar rules of a spoken language definehow to formulate valid, i.e., grammatically correct, sentences. Design grammars havebeen successfully applied in numerous engineering disciplines and enable the automatedsynthesis of designs within a defined design language. Design grammar development,however, is challenging and lacks methodological support. In this paper, a novel methodis presented that supports the development and...

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