cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Graphene: QFT in curved spacetimes close to experiments
Creators: name: Iorio, Alfredo
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Materials Science (cond-mat.mtrl-sci)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A recently proposed step-by-step procedure, to merge the low-energy physics of the $π$-bonds electrons of graphene, and quantum field theory on curved spacetimes, is recalled. The last step there is the proposal of an experiment to test a Hawking-Unruh effect, emerging from the model, that manifests itself as an exact (within the model) prediction for the electronic local density of states, in the ideal case of the graphene membrane shaped as a Beltrami pseudosphere. A discussion about one particular attempt to experimentally test the model on molecular graphene is presented, and it is taken as an excuse to solve some basic issues that will help future experiments. In particular, it is stated that the effect should be visible on generic surfaces of constant negative Gaussian curvature, that are infinite in number.
description: 12 pages, 5 figures, presented at DICE 2012, Castiglioncello - Italy
Improved classification of satellite imagery using spatial feature maps extracted from social media
Creators: name: Leichter, Artem
name: Wittich, Dennis
name: Rottensteiner, Franz
name: Werner, Martin
name: Sester, Monika
Publisher: name: Katlenburg-Lindau : Copernicus Publications
Year: 2018
Subjects: subject: Classification
subject: Data fusion
subject: Deep learning
subject: Satellite images
subject: Social media mining
subject: Image classification
subject: Image enhancement
subject: Image fusion
subject: Neural networks
subject: Remote sensing
subject: Satellite imagery
subject: Social networking (online)
subject: Trees (mathematics)
subject: Convolutional Neural Networks (CNN)
subject: Integrating information
subject: Social media datum
subject: Social media minings
subject: Spatial cross validations
subject: Spatial features
subject: Spatial information science
subject: Classification (of information)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: In this work, we consider the exploitation of social media data in the context of Remote Sensing and Spatial Information Sciences. To this end, we explore a way of augmenting and integrating information represented by geo-located feature vectors into a system for the classification of satellite images. For that purpose, we present a quite general data fusion framework based on Convolutional Neural Network (CNN) and an initial examination of our approach on features from geo-located social media postings on the Twitter and Sentinel images. For this examination, we selected six simple Twitter features derived from the metadata, which we believe could contain information for the spatial context. We present initial experiments using geotagged Twitter data from Washington DC and Sentinel images showing this area. The goal of classification is to determine local climate zones (LCZ). First, we test whether our selected feature maps are not correlated with the LCZ classification at the geo-tag position. We apply a simple boost tree classifier on this data. The result turns out not to be a mere random classifier. Therefore, this data can be correlated with LCZ. To show the improvement by our method, we compare classification with and without the Twitter feature maps. In our experiments, we apply a standard pixel-based CNN classification of the Sentinel data and use it as a baseline model. After that, we expand the input augmenting additional Twitter feature maps within the CNN and assess the contribution of these additional features to the overall F1-score of the classification, which we determine from spatial cross-validation.
Dispersive cavity-mediated quantum gate between driven dot-donor nuclear spins
Creators: name: Mielke, Jonas
name: Burkard, Guido
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nuclear spins show exceptionally long coherence times but the underlying good isolation from their environment is a challenge when it comes to controlling nuclear spin qubits. A particular difficulty, not only for nuclear spin qubits, is the realization of two-qubit gates between distant qubits. Recently, strong coupling between an electron spin and microwave resonator photons as well as a microwave resonator mediated coupling between two electron spins both in the resonant and the dispersive regime have been reported and, thus, a microwave resonator mediated electron spin two qubit gate seems to be in reach. Inspired by these findings, we theoretically investigate the interaction of a microwave resonator with a hybrid quantum dot-donor (QDD) system consisting of a gate defined Si QD and a laterally displaced $^{31}$P phosphorous donor atom implanted in the Si host material. We find that driving the QDD system allows to compensate the frequency mismatch between the donor nuclear spin splitting in the MHz regime and typical superconducting resonator frequencies in the GHz regime, and also enables an effective nuclear spin-photon coupling. While we expect this coupling to be weak, we predict that coupling the nuclear spins of two distant QDD systems dispersively to the microwave resonator allows the implementation of a resonator mediated nuclear spin two-qubit $\sqrt{i\mathrm{SWAP}}$ gate with a gate fidelity approaching $90\%$.
description: 27 pages, 13 figures
3D-Printed Flow Cells for Aptamer-Based Impedimetric Detection of E. coli Crooks Strain
Creators: name: Siller, Ina G.
name: Preuss, John-Alexander
name: Urmann, Katharina
name: Hoffmann, Michael R.
name: Scheper, Thomas
name: Bahnemann, Janina
Publisher: name: Basel : MDPI
Year: 2020
Subjects: subject: additive manufacturing
subject: impedimetric biosensor
subject: aptasensor
subject: screen-printed electrodes
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Electrochemical spectroscopy enables rapid, sensitive, and label-free analyte detection without the need of extensive and laborious labeling procedures and sample preparation. In addition, with the emergence of commercially available screen-printed electrodes (SPEs), a valuable, disposable alternative to costly bulk electrodes for electrochemical (bio-)sensor applications was established in recent years. However, applications with bare SPEs are limited and many applications demand additional/supporting structures or flow cells. Here, high-resolution 3D printing technology presents an ideal tool for the rapid and flexible fabrication of tailor-made, experiment-specific systems. In this work, flow cells for SPE-based electrochemical (bio-)sensor applications were designed and 3D printed. The successful implementation was demonstrated in an aptamer-based impedimetric biosensor approach for the detection of Escherichia coli (E. coli) Crooks strain as a proof of concept. Moreover, further developments towards a 3D-printed microfluidic flow cell with an integrated micromixer also illustrate the great potential of high-resolution 3D printing technology to enable homogeneous mixing of reagents or sample solutions in (bio-)sensor applications.
Two-photon optics of Bessel-Gaussian modes
Creators: name: McLaren, Melanie
name: Romero, Jacquiline
name: Padgett, Miles J.
name: Roux, Filippus S.
name: Forbes, Andrew
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 81-05

description: In this paper we consider geometrical two-photon optics of Bessel-Gaussian modes generated in spontaneous parametric down-conversion of a Gaussian pump beam. We provide a general theoretical expression for the orbital angular momentum (OAM) spectrum and Schmidt number in this basis and show how this may be varied by control over the radial degree of freedom, a continuous parameter in Bessel-Gaussian modes. As a test we first implement a back-projection technique to classically predict, by experiment, the quantum correlations for Bessel-Gaussian modes produced by three holographic masks, a blazed axicon, binary axicon and a binary Bessel function. We then proceed to test the theory on the down-converted photons using the binary Bessel mask. We experimentally quantify the number of usable OAM modes and confirm the theoretical prediction of a flattening in the OAM spectrum and a concomitant increase in the OAM bandwidth. The results have implications for the control of dimensionality in quantum states.
description: 8 pages, 10 figures
title: Mechanism and catalysis in the hydrolysis of some acetals and esters
Creators: name: Page, Michael I.
Publisher: name: University of Glasgow
Year: 1970
Subjects: subject: Organic chemistry.

description: Recent advances in the study of acetal hydrolysis and the effect of neighbouring hydroxyl groups on ester hydrolysis are reviewed. Some of the criteria used to elucidate the mechanism of such reactions are discussed. The enhanced rates of intra-molecular reactions over their inter-molecular counterparts are suggested to be due to factors other than just a 'concentration' effect, product stability reflected in the transition state may be important. Intra-molecular and inter-molecular general-acid catalysis have been detected in the hydrolysis of benzyli-dene 2,3-dioxy benzoic acid and benzylidene catechol, respectively. Several kinetic parameters of these reactions have been determined and are discussed. An example of nucleophilic catalysis by a carboxyl group has been found in the hydrolysis of o-carboxy benzylidene catechol. o-carboxy benzylidene 2,3-dioxy benzoic acid, a system which apparently contains suitably disposed carboxyl groups to act as general-acid and nucleophilic catalysts, was synthesised. However, the hydrolysis of this acetal showed no evidence of bifunctional catalysis. Ring opening during the acid catalysed hydrolysis of benzaldehyde acetals of 2,3-exo-norbornanediol is shown to be reversible. An A-2 mechanism is suggested to be the pathway of hydrolysis of these 1,3-dioxolanes. The facilitated rate of hydrolysis of beta-hydroxy esters, in particular beta-hydroxy butyrates and 2-hydroxy cyclopentane carboxylates, has been shown not to be due to any direct interaction between the two functional groups. 'Solvent sorting' is tentatively suggested to account for the observed phenomenon.
Quantum circuit simulation of superchannels
Creators: name: Wang, K.
name: Wang, D. -S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum simulation is one of the central discipline to demonstrate the power of quantum computing. In recent years, the theoretical framework of quantum superchannels has been developed and applied widely as the extension of quantum channels. In this work, we study the quantum circuit simulation task of superchannels. We develop a quantum superchannel simulation algorithm based on the convex decomposition into sum of extreme superchannels, which can reduce the circuit cost. We demonstrate the algorithm by numerical simulation of qubit superchannels with high accuracy, making it applicable to current experimental platforms.
Additional file 1 of Use of days alive without life support and similar count outcomes in randomised clinical trials – an overview and comparison of methodological choices and analysis methods
Creators: name: Granholm, Anders
name: Kaas-Hansen, Benjamin Skov
name: Lange, Theis
name: Munch, Marie Warrer
name: Harhay, Michael O.
name: Zampieri, Fernando G.
name: Perner, Anders
name: Møller, Morten Hylander
name: Jensen, Aksel Karl Georg
Publisher: name: figshare
Year: 2023
Subjects: subject: Statistics
subject: FOS: Mathematics

description: Additional file 1. A table summarising the models considered and additional plots, including assessment of the proportional odds assumption for the cumulative logistic model and posterior predictive checks for all models, can be found in Additional file 1.pdf.
Fully data-driven time-delay interferometry with time-varying delays
Creators: name: Baghi, Quentin
name: Baker, John G.
name: Slutsky, Jacob
name: Thorpe, James Ira
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Raw space-based gravitational-wave data like LISA's phase measurements are dominated by laser frequency noise. The standard technique to make this data usable for science is time-delay interferometry (TDI), which cancels laser noise terms by forming suitable combinations of delayed measurements. We recently introduced the basic concepts of an alternative approach which, unlike TDI, does not rely on independent knowledge of temporal correlations in the dominant noise. Instead, our automated Principal Component Interferometry (aPCI) processing only assumes that one can produce some linear combinations of the temporally nearby regularly spaced phase measurements, which cancel the laser noise. Then we let the data reveal those combinations. Our previous work relies on the simplifying additional assumption that the filters which lead to the laser-noise-free data streams are time-independent. In LISA, however, these filters will vary as the constellation armlengths evolve. Here, we discuss a generalization of the basic aPCI concept compatible with data dominated by a still unmodeled but slowly varying noise covariance. Despite its independence on any model, aPCI successfully mitigates laser frequency noise below the other noises' level, and its sensitivity to gravitational waves is the same as the state-of-the-art second-generation TDI, up to a 2\% error.
description: 12 pages, 7 figures. Update Eqs. (1) and (2) to generalize them to all possible TDI combinations. Other minor changes
Hygienic Practices, Microbial Quality and Safety of Raw Cow’s Milk and Traditional Fermented Milk (Irgo) in Selected Areas of Ethiopian Central Highlands
Creators: name: Bereda, Abebe
name: Yilma, Zelalem
name: Eshetu, Mitiku
name: Yousuf, Mohammed
Publisher: name: East African Journal of Veterinary and Animal Sciences
Year: 2018

description: A semi-structured questionnaire was used to interview a total of 320 smallholder farmers to assess the hygienic practices and quality of milk and traditional fermented milk. Eighty samples each for raw and fermented milk were collected for microbial analysis using standard procedures. The majority (96.3%) of the milkers washed their hands during milking and 90.7% of the milkers washed udder before milking. However, only 3.5% of the respondents used individual clean towel to dry hands and 19.6% of the respondents to clean udder prior to milking. Plastic containers were the most frequently used milk utensils for various purposes. About 53.8% of the respondents’ clean milk utensils with cold water and detergents; while 46.2% used warm water and soap. Tap, river, spring and bore-well were the common sources of water used to clean udder, hands and milk containers. The majority of the respondent’s stored milk at room temperature until sold. The average aerobic mesophilic bacterial, coliforms, lactic acid bacteria, and yeast and mould counts in raw milk was 6.8, 3.5, 2.9, and 5.06 log cfu/mL, respectively. Significantly low aerobic mesophilic (5.3 log cfu/mL) and coliform counts (2.5 log cfu/mL) were recorded for fermented milk samples. About 7.5% of raw milk and 2.5% of the fermented milk samples were positive for Listeria monocytogenes. However, none of the samples were positive for Salmonella. Results revealed that the microbial quality and safety of raw and fermented milk produced in the central highlands of Ethiopia are not as per the standard set by European Union and may be considered as less quality product. Therefore, implementing hygienic handling practices of milk and milk products throughout the dairy value chain is essential to ensure the safety and suitability of these food products for consumers.
description: East African Journal of Veterinary and Animal Sciences, Vol. 2 No. 1 (2018): East African Journal of Veterinary and Animal Sciences
title: Das dunkle Universum. Modellierung des Unbekannten
Creators: name: Bartelmann, Matthias
Publisher: name: University Library Heidelberg
Year: 2013

description: Die Kosmologie hat im letzten Jahrzehnt große Fortschritte erzielt. Noch vor zwanzig Jahren waren die Kenntnisse über das Universum höchst spekulativ, heute lassen sich die meisten Eigenschaften des Universums recht genau festlegen. Wissenschaftler am Institut für Theoretische Astrophysik der Universität Heidelberg wollen mit ihren Arbeiten dazu beitragen, eines der größten Rätsel aktueller kosmologischer Forschung zu lösen: Was ist die Natur der Dunklen Materie?
description: Ruperto Carola, Nr. 2 (2013): Himmel & Hölle, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
UV-LED projection photolithography for high-resolution functional photonic components
Creators: name: Zheng, Lei
name: Zywietz, Urs
name: Birr, Tobias
name: Duderstadt, Martin
name: Overmeyer, Ludger
name: Roth, Bernhard
name: Reinhardt, Carsten
Publisher: name: London : Macmillan Publishers Limited, SpringerNature
Year: 2021
Subjects: subject: Micro-optics
subject: Nanoscale devices
subject: Other photonics
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The advancement of micro- and nanostructuring techniques in optics is driven by the demand for continuous miniaturization and the high geometrical accuracy of photonic devices and integrated systems. Here, UV-LED projection photolithography is demonstrated as a simple and low-cost approach for rapid generation of two-dimensional optical micro- and nanostructures with high resolution and accuracy using standard optics only. The developed system enables the projection of structure patterns onto a substrate with 1000-fold demagnification. Photonic devices, e.g., waveguides and microring resonators, on rigid or flexible substrates with varied geometrical complexity and overall structure dimensions from the nanometer to centimeter scale were successfully prepared. In particular, high-resolution gratings with feature sizes down to 150 nm and periods as small as 400 nm were realized for the first time by this approach. Waveguides made of doped laser active materials were fabricated, and their spontaneous emission was detected. The demonstrated superior performance of the developed approach may find wide applications in photonics, plasmonics, and optical materials science, among others.
Effects of language mismatch in automatic forensic voice comparison using deep learning embeddings
Creators: name: Sztahó, Dávid
name: Fejes, Attila
Publisher: name: arXiv
Year: 2022
Subjects: subject: Sound (cs.SD)
subject: Computation and Language (cs.CL)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In forensic voice comparison the speaker embedding has become widely popular in the last 10 years. Most of the pretrained speaker embeddings are trained on English corpora, because it is easily accessible. Thus, language dependency can be an important factor in automatic forensic voice comparison, especially when the target language is linguistically very different. There are numerous commercial systems available, but their models are mainly trained on a different language (mostly English) than the target language. In the case of a low-resource language, developing a corpus for forensic purposes containing enough speakers to train deep learning models is costly. This study aims to investigate whether a model pre-trained on English corpus can be used on a target low-resource language (here, Hungarian), different from the model is trained on. Also, often multiple samples are not available from the offender (unknown speaker). Therefore, samples are compared pairwise with and without speaker enrollment for suspect (known) speakers. Two corpora are applied that were developed especially for forensic purposes, and a third that is meant for traditional speaker verification. Two deep learning based speaker embedding vector extraction methods are used: the x-vector and ECAPA-TDNN. Speaker verification was evaluated in the likelihood-ratio framework. A comparison is made between the language combinations (modeling, LR calibration, evaluation). The results were evaluated by minCllr and EER metrics. It was found that the model pre-trained on a different language but on a corpus with a huge amount of speakers performs well on samples with language mismatch. The effect of sample durations and speaking styles were also examined. It was found that the longer the duration of the sample in question the better the performance is. Also, there is no real difference if various speaking styles are applied.
Morphology dependence of radial elasticity in multiwalled boron nitride nanotubes
Creators: name: Chiu, Hsiang-Chih
name: Kim, Suenne
name: Klinke, Christian
name: Riedo, Elisa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the measurement of the effective radial modulus of multiwalled Boron Nitride nanotubes with external radii in the range 3.7 to 36 nm and number of layers in between 5 and 48. These Boron Nitride nanotubes are radially much stiffer than previously reported thinner and smaller Boron Nitride nanotubes. Here, we show the key role of the morphology of the nanotubes in determining their radial rigidity, in particular we find that the external and internal radii, R_ext and R_int, have a stronger influence on the radial modulus than the NT's thickness, t. We find that the effective radial modulus decreases nonlinearly with 1/R_ext until reaching, for a large number of layers and a large radius, the transverse elastic modulus of bulk hexagonal-Boron Nitride.
description: 6 pages, 3 figures
The shape of the electron and muon lateral distribution functions of extensive air showers
Creators: name: Basak, Animesh
name: Dey, Rajat K.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The lateral density data obtained for different secondaries of an extensive air shower (EAS) from an array of detectors are usually described by some suitable lateral density functions (LDFs). Analyzing non-vertical simulated EASs generated with the CORSIKA code, it is found that the lateral and polar density distributions of electrons and muons are asymmetric in the ground plane. It means that typical expressions for symmetric lateral density functions (SLDFs) (\emph{e.g.} the Nishimura-Kamata-Greisen function) are inadequate to reconstruct the lateral and polar dependencies of such asymmetric electron or muon densities accurately. In order to provide a more consistent LDF for non-vertical shower reconstruction in the ground plane, the paper considers the issue of the modification of the SLDF analytically. The asymmetry arising from additional attenuation and correction of the positional coordinates (radial and polar) of cascade particles causes a gap length between the center of concentric equidensity ellipses and the EAS core. A toy function is introduced as a basic LDF to describe the asymmetric lateral and polar density distributions of electrons or muons of EASs, thereby predicting the gap length parameter. Consequently, the desired LDF describing the asymmetric density distributions of electrons and muons of EASs has emerged. We compare results from detailed simulations with the predictions of the analytical parametrization. The LDF derived in this work is found to be well-suited to reconstruct EASs in the ground plane directly.
description: 18 pages, 37 figures
Emergent conservation in Floquet dynamics of integrable non-Hermitian models
Creators: name: Banerjee, Tista
name: Sengupta, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the dynamics of a class of integrable non-Hermitian free-fermionic models driven periodically using a continuous drive protocol characterized by an amplitude $g_1$ and frequency $ω_D$. We derive an analytic, albeit perturbative, Floquet Hamiltonian for describing such systems using Floquet perturbation theory with $g_1^{-1}$ being the perturbation parameter. Our analysis indicates the existence of special drive frequencies at which an approximately conserved quantity emerges. The presence of such an almost conserved quantity is reflected in the dynamics of the fidelity, the correlation functions and the half-chain entanglement entropy of the driven system. In addition, it also controls the nature of the steady state of the system. We show that one-dimensional (1D) transverse field Ising model, with an imaginary component of the transverse field, serves as an experimentally relevant example of this phenomenon. In this case, the transverse magnetization is approximately conserved; this conservation leads to complete suppression of oscillatory features in the transient dynamics of fidelity, magnetization, and entanglement of the driven chain at special drive frequencies. We discuss the nature of the steady state of the Ising chain near and away from these special frequencies, demonstrate the protocol independence of this phenomenon by showing its existence for discrete drive protocols, and suggest experiments which can test our theory.
description: 14 pages, 7 figs; v2 with minor changes and added refs
Exploiting the social and semantic web for guided web archiving
Creators: name: Risse, Thomas
name: Dietze, Stefan
name: Peters, Wim
name: Doka, Katerina
name: Stavrakas, Yannis
name: Senellart, Pierre
Publisher: name: Heidelberg : Springer Verlag
Year: 2012
Subjects: subject: Social Web
subject: Text Analysis
subject: Web Archiving
subject: Web Crawler
subject: Court decisions
subject: Meta information
subject: Semantic information
subject: Text analysis
subject: Web archives
subject: Web content
subject: Artificial intelligence
subject: Digital libraries
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: The constantly growing amount of Web content and the success of the Social Web lead to increasing needs for Web archiving. These needs go beyond the pure preservation of Web pages. Web archives are turning into "community memories" that aim at building a better understanding of the public view on, e.g., celebrities, court decisions, and other events. In this paper we present the ARCOMEM architecture that uses semantic information such as entities, topics, and events complemented with information from the social Web to guide a novel Web crawler. The resulting archives are automatically enriched with semantic meta-information to ease the access and allow retrieval based on conditions that involve high-level concepts. The final publication is available at Springer via http://dx.doi.org/10.1007/978-3-642-33290-6_47.
The $\textit{q}$-metric naked singularity: A viable explanation for the nature of the central object in the Milky Way
Creators: name: Lora-Clavijo, F. D.
name: Prada-Méndez, G. D.
name: Becerra, L. M.
name: Becerra-Vergara, E. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work, we investigate whether the compact object at the center of the Milky Way is a naked singularity described by the $\textit{q}$-metric spacetime. Our fitting of the astrometric and spectroscopic data for the S2 star implies that similarly to the Schwarzschild black hole, the $\textit{q}$-metric naked singularity offers a satisfactory fit to the observed measurements. Additionally, it is shown that the shadow produced by the naked singularity is consistent with the shadow observed by the Event Horizon Telescope collaboration for Sgr-A*. It is worth mentioning that the spatial distribution of the S-stars favors the notion that the compact object at the center of our Galaxy can be described by an almost static spacetime. Based on these findings, the $\textit{q}$-metric naked singularity turns up as a compelling candidate for further investigation.
description: Accepted for publication in Classical and Quantum Gravity
Additional file 1 of From bench to bedside: 64Cu/177Lu 1C1m-Fc anti TEM-1: mice-to-human dosimetry extrapolations for future theranostic applications
Creators: name: Gnesin, Silvano
name: Chouin, Nicolas
name: Cherel, Michel
name: Dunn, Steven Mark
name: Schaefer, Niklaus
name: Faivre-Chauvet, Alain
name: Prior, John O.
name: Delage, Judith Anna
Publisher: name: figshare
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: Table S1 TIAC for the [177Lu]Lu-1C1m-Fc 1 DOTA. Table S2 TIAC for the [177Lu]Lu-1C1m-Fc 3 DOTA. Table S3 TIAC for the [64Cu]Cu-1C1m-Fc 3 DOTA. Table S4 Target organ AD for the [177Lu]Lu-1C1m-Fc 1 DOTA. Table S5 Target organ AD for the [177Lu]Lu-1C1m-Fc 3 DOTA. Table S6 Target organ AD for the [64Cu]Cu-1C1m-Fc 3 DOTA.
Do the close binaries HD 22128 and HD 56495 contain Ap or Am stars?
Creators: name: Folsom, C. P.
name: Wade, G. A.
name: Johnson, N. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: HD 22128 and HD 56495 are both double-lined spectroscopic binary systems with short orbital periods, which have been proposed to host magnetic Ap stars. Ap stars in short period binary systems are very rare, and may provide insight into the origin of magnetism in A-type stars. We study these two systems using high-resolution MuSiCoS spectropolarimetric data, in order to asses the presence of magnetic fields and study the atmospheric chemistry of the components. This represents the first modern magnetic measurements and careful spectroscopic analyses of these stars. We find no evidence of a magnetic field in any of the stars, with precise uncertainties on the longitudinal magnetic field of 50 and 80 G in the components of HD 22128, and 80 and 100 G in the components of HD 56495. We performed detailed abundance analyses of both stars in both systems, finding clear evidence of Am chemical peculiarities in both components of HD 22128, and in the brighter component of HD 56495, with overabundant iron peak elements and underabundant Sc and Ca. The less luminous component of HD 56495 is chemically normal. The atmospheric chemistry is consistent with the absence of magnetic fields, and consistent with the theory of Am star formation proposing that tidal interactions slow the rotation rate of the star, allowing atomic diffusion to proceed efficiently.
description: 11 pages, 4 figures, accepted for publication in MNRAS
High-power laser welding of thick steel-aluminum dissimilar joints
Creators: name: Lahdo, Rabi
name: Springer, André
name: Pfeifer, Ronny
name: Kaierle, Stefan
name: Overmeyer, Ludger
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2016
Subjects: subject: dissimilar joints
subject: high-power laser welding
subject: lightweight construction
subject: maritime industry
subject: steel-aluminum
subject: Automotive industry
subject: Carbon dioxide
subject: Climate change
subject: Global warming
subject: High power lasers
subject: Joining
subject: Laser beam welding
subject: Marine industry
subject: Metallography
subject: Quality control
subject: Tensile strength
subject: Tensile testing
subject: Welding
subject: Dissimilar joints
subject: Intergovernmental panel on climate changes
subject: Intermetallic phasis
subject: Light-weight constructions
subject: Maritime industry
subject: Metallographic analysis
subject: Optimized process
subject: Thick steel plates
subject: Aluminum
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: According to the Intergovernmental Panel on Climate Change (IPCC), a worldwide reduction of CO2-emissions is indispensable to avoid global warming. Besides the automotive sector, lightweight construction is also of high interest for the maritime industry in order to minimize CO2-emissions. Using aluminum, the weight of ships can be reduced, ensuring lower fuel consumption. Therefore, hybrid joints of steel and aluminum are of great interest to the maritime industry. In order to provide an efficient lap joining process, high-power laser welding of thick steel plates (S355, t = 5 mm) and aluminum plates (EN AW-6082, t = 8 mm) is investigated. As the weld seam quality greatly depends on the amount of intermetallic phases within the joint, optimized process parameters and control are crucial. Using high-power laser welding, a tensile strength of 10 kN was achieved. Based on metallographic analysis, hardness tests, and tensile tests the potential of this joining method is presented.
A general phase-field model for fatigue failure in brittle and ductile solids
Creators: name: Seleš, Karlo
name: Aldakheel, Fadi
name: Tonković, Zdenko
name: Sorić, Jurica
name: Wriggers, Peter
Publisher: name: Berlin : Springer
Year: 2021
Subjects: subject: Brittle/ductile fracture
subject: Experimental validation
subject: Fatigue
subject: Paris law
subject: Phase-field modelling
subject: Wöhler curve
subject: Energy dissipation
subject: Fracture
subject: Elasto-plastic material models
subject: Energy accumulation
subject: Energy degradation
subject: Nonlinear kinematic hardening
subject: Phase-field approaches
subject: Phenomenological approach
subject: Physical interpretation
subject: Structural loading
subject: Fatigue of materials
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: In this work, the phase-field approach to fracture is extended to model fatigue failure in high- and low-cycle regime. The fracture energy degradation due to the repeated externally applied loads is introduced as a function of a local energy accumulation variable, which takes the structural loading history into account. To this end, a novel definition of the energy accumulation variable is proposed, allowing the fracture analysis at monotonic loading without the interference of the fatigue extension, thus making the framework generalised. Moreover, this definition includes the mean load influence of implicitly. The elastoplastic material model with the combined nonlinear isotropic and nonlinear kinematic hardening is introduced to account for cyclic plasticity. The ability of the proposed phenomenological approach to naturally recover main features of fatigue, including Paris law and Wöhler curve under different load ratios is presented through numerical examples and compared with experimental data from the author’s previous work. Physical interpretation of additional fatigue material parameter is explored through the parametric study. © 2021, The Author(s).
Enhancement and tuning of the defect-induced electroluminescence of ZnO mesoporous layers in the visible range
Creators: name: Roland, Iännis
name: Schanne, Domitille
name: Bogicevic, Alexandra
name: Degiron, Aloyse
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show a way to pattern the visible electroluminescence of solution-processed mesoporous ZnO layers. Our approach consists in locally changing the nanoscale morphology of the coated ZnO layers by patterning the underlying surface with thin metallic patches. Above the metal, the ZnO film is organized in clusters that enhance its defect-induced electroluminescence. The resulting emission occurs over a large continuum of wavelengths in the visible and near-infrared range. This broad emission continuum is filtered by thin film interferences that develop within the device, making it possible to fabricate LEDs with different colours by adjusting the thickness of their transparent electrode. When the metallic patterns used to change the morphology of the ZnO layer reach sub-micron dimensions, additional plasmonic effects arise, providing extra degrees of freedom to tune the colour and polarization of the emitted photons.
Allium pulchellum G. Don
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. pulchellum G. Don Cat. XLVIII und350. Art für das Wallis zu streichen.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Diamond quantum sensors in microfluidics technology
Creators: name: Fujiwara, Masazumi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Diamond quantum sensing is an emerging technology for probing multiple physico-chemical parameters in the nano- to micro-scale dimensions within diverse chemical and biological contexts. Integrating these sensors into microfluidic devices enables the precise quantification and analysis of small sample volumes in microscale channels. In this Perspective, we present recent advancements in the integration of diamond quantum sensors with microfluidic devices and explore their prospects with a focus on forthcoming technological developments.
Co-stability of radicals and its applications to PI-theory
Creators: name: Gordienko, Alexey Sergeevich
Publisher: name: arXiv
Year: 2013
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary 16W50, Secondary 17B05, 16R10, 16R50, 17B70, 16T05, 16T15

description: We prove that if A is a finite dimensional associative H-comodule algebra over a field F for some involutory Hopf algebra H not necessarily finite dimensional, where either char F = 0 or char F > dim A, then the Jacobson radical J(A) is an H-subcomodule of A. In particular, if A is a finite dimensional associative algebra over such a field F, graded by any group, then the Jacobson radical J(A) is a graded ideal of A. Analogous results hold for nilpotent and solvable radicals of finite dimensional Lie algebras over a field of characteristic 0. We use the results obtained to prove the analog of Amitsur's conjecture for graded polynomial identities of finite dimensional associative algebras over a field of characteristic 0, graded by any group.
description: 9 pages; definitions and introduction overlap with arXiv:1203.5384 and arXiv:1205.0778
Prevalence of Calves Coccidiosis and its associated Risk Factors in Jimma Town
Creators: name: Mengistu, Shimelis
name: Malke, Abshiru
Publisher: name: East African Journal of Veterinary and Animal Sciences
Year: 2018

description: A cross-sectional study was conducted from November 2014 up to April 2015 to estimate prevalence and assess risk factors associated with calf coccidiosis in Jimma town and its surroundings. Three hundred eighty four fecal samples were examined for the presence of Eimeria species oocysts by floatation technique using saturated salt (NaCl) solution. Farms which have at least 10 calves were included in the study and simple random sampling method was employed to select calves for fecal sample and data collection. Out of the 384 fecal samples examined, 165 were positive for Eimeria oocysts resulting in an overall prevalence of 43.0 %. All the risk factors including age, sex, breed, body condition score, and state and husbandry system of the calves were not significantly associated (P>0.05) with the prevalence of coccidiosis. Considering the high occurrence and negative effects of the infection on health and growth performance of calves, attention should be given to appropriate preventive and control measures. Further investigation that includes identification of Eimeria species is also recommended.
description: East African Journal of Veterinary and Animal Sciences, Vol. 2 No. 1 (2018): East African Journal of Veterinary and Animal Sciences
Temperature-dependence of polymer grating couplers for single-mode waveguides
Creators: name: Li, Pei
name: Sherman, Stanislav
name: Rezem, Maher
name: Honnef, Kirsten
name: Zappe, Hans
Publisher: name: Bellingham, WA : SPIE - International Society for Optical Engineering
Year: 2018
Subjects: subject: Integrated optics devices
subject: Low-cost mass-production
subject: Polymer grating coupler
subject: Polymer optical sensors
subject: Waveguides
subject: Cost effectiveness
subject: Costs
subject: Integrated optics
subject: Light sources
subject: Mirrors
subject: Optical sensors
subject: Temperature distribution
subject: Thermal expansion
subject: Cost-effective manufacturing
subject: Mass production
subject: Polymer gratings
subject: Single mode waveguides
subject: Temperature characterization
subject: Thermal expansion coefficients
subject: Thermo-optic coefficients
subject: Polymers
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Polymer optical sensors have attracted significant scientific interest due to the advantages of flexibility and low-cost mass-production possibilities. A main challenge in integration of all-polymer systems is interfacing sensor parts to light sources and detectors. Coupling strategies such as end-facet coupling, 45° mirrors coupler and gratings coupler have been investigated. However, facet polishing is complicated for large flexible foils, while 45° mirrors often require a metal reflection layer. Thus grating couplers have the biggest potential and are compatible with roll-To-roll processes. Polymers have higher thermo-optic-coefficients and thermal-expansion-coefficients compared to inorganic materials, making them very sensitive to temperature changes. Consequently, polymer grating couplers show a shift of the coupling angle with temperature and thus a decay of efficiency. We therefore present a temperature characterization of all-polymer based grating couplers on waveguides based sensors. Cost-effective manufacturing methods, including hot-embossing and spin-coating, were used for the fabrication of waveguides and gratings on PMMA foils. Single mode waveguides were realized by modifying the dimensions of their cross-section. Gratings with a period of 560 nm were subsequently bonded on the waveguides for input coupling. Thermal response was characterized by monitoring the coupling angle at different temperatures. Temperature dependences of the incident angle at two main peaks of 0.0027 °/K and 0.0054 °/K were determined respectively at the wavelength of 852 nm and a linear response over the evaluated range between 298 K and 323 K was observed, which opens up possible applications for on-chip temperature monitoring and thermal compensation when integrated with polymer sensors.
Hydrogels for efficient light delivery in optogenetic applications
Creators: name: Johannsmeier, S.
name: Torres, M.L.
name: Ripken, T.
name: Heinemann, D.
name: Heisterkamp, Alexander
Publisher: name: Bellingham, WA : SPIE - International Society for Optical Engineering
Year: 2018
Subjects: subject: Biohybrid implant
subject: Cardiac pacing
subject: Defibrillation
subject: Hydrogels
subject: Light delivery
subject: Optogenetics
subject: Waveguiding
subject: Biocompatibility
subject: Biomechanics
subject: Histology
subject: Muscle
subject: Polyethylene glycols
subject: Refractive index
subject: Waveguides
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Light-based therapies have been established for various indications, such as skin conditions, cancer or neonatal jaundice. Advances in the field of optogenetics open up new horizons for light-tissue interactions with an organism-wide impact. Excitable tissues, such as nerve and muscle tissues, can be controlled by light after the introduction of light-sensitive ion channels. Since these organs are generally not easily accessible to illumination in vivo, there is an increasing need for effective biocompatible waveguides for light delivery. These devices not only have to guide and distribute the light as desired with minimal losses, they should also mimic the mechanical properties of the surrounding tissue to ensure compatibility. In this project, we are tuning the properties of hydrogels from poly(ethylene glycol) derivatives to achieve compatibility with muscle tissue as well as optimal light guiding and distribution for optogenetic applications at the heart. The excitation light is coupled into the hydrogel with a biocompatible fiber. Properties of the hydrogel are mainly tuned by monomer length and concentration. Total reflection can be achieved by embedding a fiber-like hydrogel with a high refractive index into a second, low refractive index gel. Different geometries and scattering microparticles are used for light distribution in a flat gel patch. Targeted cell attachment can be achieved by introducing a protein layer to the otherwise bioinert gel. After optimization, the hydrogel may be used to deliver light for the excitation of genetically altered cardiomyocytes for controlled contraction.
Inhalation exposure to hazardous substances during powder-bed processes
Creators: name: Walter, Jürgen
name: Baumgärtel, Anja
name: Hustedt, Michael
name: Hebisch, Ralph
name: Kaierle, Stefan
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Additive manufacturing
subject: Inhalation exposure
subject: Occupational safety
subject: Powder-bed process
subject: 3D printers
subject: Construction industry
subject: Fighter aircraft
subject: Metal working
subject: Occupational risks
subject: Volatile organic compounds
subject: Chemical constituents
subject: Hazardous substances
subject: Polymer powders
subject: Powder bed
subject: Volatile compounds
subject: Working practices
subject: Powder metals
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: This work resumes first results concerning the identification of workers' inhalation exposure by means of workplace measurements in the field of additive manufacturing. In particular for powder-bed processes, risks caused by mixed exposures due to released particles and relevant chemical constituents or possible volatile compounds have to be evaluated. The workplace measurements are focused on processes in the automotive as well as the aviation and tool construction industry. The aim is to gain exposure data concerning the application of metal-containing powders and alloys as well as polymer powders in powder-bed processes and to derive instructions for good working practice.