cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Anomalous attenuation of piezoacoustic surface waves by liquid helium thin films
Creators: name: Byeon, H.
name: Nasyedkin, K.
name: Lane, J. R.
name: Zhang, L.
name: Beysengulov, N. R.
name: Loloee, R.
name: Pollanen, J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the observation of an anomalously high attenuation of high frequency surface acoustic waves by thin films of liquid $^{4}$He. The piezoelectric acoustic waves propagate along the surface of a lithium niobate substrate, which is coated with varying amounts of liquid helium. When the thickness of the helium layer is much larger than the wavelength of the surface acoustic wave on the substrate its attenuation is dominated by the excitation of compressional waves into the liquid, in good agreement with theory and previous measurements. However, for sufficiently thin helium coverage, we find that the acoustic wave attenuation is significantly increased beyond that measured with the substrate submerged in bulk liquid. Possible mechanisms for this enhanced attenuation are discussed.
description: 8 pages, 4 figures
Quantum radiation in external background fields
Creators: name: Schützhold, Ralf
name: Plunien, Guenter
name: Soff, Gerhard
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A canonical formalism is presented which allows for investigations of quantum radiation induced by localized, smooth disturbances of classical background fields by means of a perturbation theory approach. For massless, non-selfinteracting quantum fields at zero temperature we demonstrate that the low-energy part of the spectrum of created particles exhibits a non-thermal character. Applied to QED in varying dielectrics the response theory approach facilitates to study two distinct processes contributing to the production of photons: the squeezing effect due to space-time varying properties of the medium and of the velocity effect due to its motion. The generalization of this approach to finite temperatures as well as the relation to sonoluminescence is indicated.
description: 20 pages
Confining Properties of Abelian-Projected Theories and Field Strength Correlators
Creators: name: Antonov, Dmitri
name: Ebert, Dietmar
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review the string representations of Abelian-projected SU(2)- and SU(3)-gauge theories and their application to the evaluation of bilocal field strength correlators. The large distance asymptotic behaviours of the latter ones are shown to be in agreement with the Stochastic Vacuum Model of QCD and existing lattice data.
description: Invited talk given at the Euroconference ``QCD 99'', 7-13th July 1999, Montpellier (France), to appear in Nucl. Phys. B (Proc. Suppl.)
Ab initio simulation of Raman fingerprints of sulfur/carbon copolymer cathodes during discharge of Li-S batteries
Creators: name: Kiani, Rana
name: Sheng, Huiying
name: Held, Timo
name: Löhmann, Oliver
name: Risse, Sebastian
name: Sebastiani, Daniel
name: Partovi-Azar, Pouya
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2025
Subjects: subject: 540

description: Sulfur/carbon copolymers have emerged as promising alternatives for conventional crystalline sulfur cathodes for lithium-sulfur batteries. Among these, sulfur-n-1,3-diisopropenylbenzene (S/DIB) copolymers, which present a 3D network of DIB molecules interconnected via sulfur chains, have particularly shown a good performance and, therefore, have been under intensive experimental and theoretical investigations. However, their structural complexity and flexibility have hindered a clear understanding of their structural evolution during redox reactions at an atomistic level. Here, by performing state-of-the-art ab initio molecular dynamics-based Raman spectroscopy simulations, we investigate the spectral fingerprints of S/DIB copolymers arising from local structures during consecutive reactions with lithium. We discuss in detail Raman spectral changes in particular frequency ranges which are common in S/DIB copolymers having short sulfur chains and those consisting of longer ones. We also highlight those distinctive spectroscopic fingerprints specific to local S/DIB structures containing only short or long sulfur chains. This distinction could serve to help distinguish between them experimentally during discharge. Our theoretically predicted results are in a good agreement with experimental Raman measurements on coin cells at different discharge stages. This work represents, for the first time, an attempt to compute Raman fingerprints of sulfur/carbon copolymer cathodes during battery operation including quantum-chemical and finite-temperature effects, and provides a guideline for Raman spectral changes of arbitrary electrodes during discharge.
Progress in lattice chiral gauge theories
Creators: name: Narayanan, R.
name: Neuberger, H.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Some key features of continuum chiral fermions are shown to be satisfied by the overlap.
description: 5 pages, uuencoded postscript file, revised to properly cite reference [6]
Lettre de Jean-Baptiste Marie de Piquet, marquis de Méjanes à Jean-François Séguier, 1768-08-02
Creators: name: marquis de Méjanes, Jean-Baptiste Marie de Piquet
name: Jean-Baptiste Marie De Piquet, Marquis De Méjanes
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2021
Subjects: Librairie

description: [transcription] Marquis de Méjanes.

je profite, Monsieur, avec le plus vif empressement du départ de Monsieur Lucas pour avoir l'honneur de vous offrir le Gyraldi que Monsieur Bret m'a dit vous être nécessaire. Il ne m'est arrivé de Lyon que ces jours-ci, c'est ce qui m'a empêché de vous l'envoyer dans le moment même. Je m'estime bien heureux de pouvoir vous être utile et vous devez être convaincu, Monsieur, du plaisir que j'aurai à saisir toutes les occasions imaginables. Vous pouvez disposer de tous mes livres. Je ne saurai en faire un meilleur usage que de les partager avec vous. J'aurais bien désir, Monsieur, d'habiter la même ville afin de pouvoir profiter des connaissances variées d'un savant célèbre dans l'Europe et jouir des douceurs de votre société si élevée de toutes les perosnnes qui vous connaissant, mais puisque cet avantage m'est refusé [fol. 110 v] ayez du moins les regrets que j'éprouve qui ne peuvent être comparés qu'à l'estime et au sincère attachement avec lequel j'ai l'honneur d'être, Monsieur, votre très humble et très obéissant serviteur.

Méjanes

Arles, 2 août 1768.
description: [personnes citées] Louis (Oncle) Bret
description: [reférence bibliographique citée] Giraldi, Lelio Gregorio, Opera omnia, Leyde, 1696, 2 vol.
description: Source: [lieu de Conservation] Nîmes, Bibliothèque Carré d'Art [cote]ms. 145_23, fol. 110
description: Source: ark:/12148/btv1b10015271s
Numerical approximations for the tempered fractional Laplacian: Error analysis and applications
Creators: name: Duo, Siwei
name: Zhang, Yanzhi
Publisher: name: arXiv
Year: 2018
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, we propose an accurate finite difference method to discretize the $d$-dimensional (for $d\ge 1$) tempered integral fractional Laplacian and apply it to study the tempered effects on the solution of problems arising in various applications. Compared to other existing methods, our method has higher accuracy and simpler implementation. Our numerical method has an accuracy of $O(h^ε)$, for $u \in C^{0, α+ε} (\barΩ)$ if $α< 1$ (or $u \in C^{1, α-1+ε} (\barΩ)$ if $α\ge 1$) with $ε> 0$, suggesting the minimum consistency conditions. The accuracy can be improved to $O(h^2)$, for $u \in C^{2, α+ε} (\barΩ)$ if $α< 1$ (or $u \in C^{3, α- 1 + ε} (\barΩ)$ if $α\ge 1$). Numerical experiments confirm our analytical results and provide insights in solving the tempered fractional Poisson problem. It suggests that to achieve the second order of accuracy, our method only requires the solution $u \in C^{1,1}(\barΩ)$ for any $0
description: 21 pages, 11 figures, 3 tables
Delta-rho in an SU(2) X U(1) chiral Yukawa model
Creators: name: Alonso, J. L.
name: Boucaud, Ph.
name: van der Sijs, A. J.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We report on a simulation in progress of an SU(2) X U(1) fermion-Higgs model with two *non-degenerate* fermion doublets. The Zaragoza proposal for chiral lattice fermions is used; naive fermions are studied for comparison. The aims of this simulation are a non-perturbative study of the decoupling of species doublers, of triviality bounds on the Higgs and fermion masses and of the phenomenological quantity Delta-rho.
description: Contribution to Lattice 95 - 4 pages PostScript
Advancing anticancer drug discovery : leveraging metabolomics and machine learning for mode of action prediction by pattern recognition
Creators: name: Saoud, Mohamad
name: Grau, Jan
name: Rennert, Robert
name: Müller, Thomas
name: Yousefi, Mohammad
name: Davari, Mehdi D.
name: Hause, Bettina
name: Csuk, René
name: Rashan, Luay
name: Große, Ivo
name: Tissier, Alain
name: Wessjohann, Ludger
name: Balcke, Gerd Ulrich
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 615

description: A bottleneck in the development of new anti-cancer drugs is the recognition of their mode of action (MoA). Metabolomics combined with machine learning allowed to predict MoAs of novel anti-proliferative drug candidates, focusing on human prostate cancer cells (PC-3). As proof of concept, 38 drugs are studied with known effects on 16 key processes of cancer metabolism, profiling low molecular weight intermediates of the central carbon and cellular energy metabolism (CCEM) by LC-MS/MS. These metabolic patterns unveiled distinct MoAs, enabling accurate MoA predictions for novel agents by machine learning. The transferability of MoA predictions based on PC-3 cell treatments is validated with two other cancer cell models, i.e., breast cancer and Ewing's sarcoma, and show that correct MoA predictions for alternative cancer cells are possible, but still at some expense of prediction quality. Furthermore, metabolic profiles of treated cells yield insights into intracellular processes, exemplified for drugs inducing different types of mitochondrial dysfunction. Specifically, it is predicted that pentacyclic triterpenes inhibit oxidative phosphorylation and affect phospholipid biosynthesis, as confirmed by respiration parameters, lipidomics, and molecular docking. Using biochemical insights from individual drug treatments, this approach offers new opportunities, including the optimization of combinatorial drug applications.
Solution Paths of Variational Regularization Methods for Inverse Problems
Creators: name: Bungert, Leon
name: Burger, Martin
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 49N45, 47J10, 47A52

description: We consider a family of variational regularization functionals for a generic inverse problem, where the data fidelity and regularization term are given by powers of a Hilbert norm and an absolutely one-homogeneous functional, respectively, and the regularization parameter is interpreted as artificial time. We investigate the small and large time behavior of the associated solution paths and, in particular, prove finite extinction time for a large class of functionals. Depending on the powers, we also show that the solution paths are of bounded variation or even Lipschitz continuous. In addition, it will turn out that the models are "almost" mutually equivalent in terms of the minimizers they admit. Finally, we apply our results to define and compare two different non-linear spectral representations of data and show that only one of it is able to decompose a linear combination of non-linear eigenfunctions into the individual eigenfunctions. For that purpose, we will also briefly address piecewise affine solution paths.
description: 36 pages, 6 figures, published version
Quansinormal modes of static and spherically symmetric black holes with the derivative coupling
Creators: name: Yu, Shuang
name: Gao, Changjun
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the quasinormal modes of a class of static and spherically symmetric black holes with the derivative coupling. The derivative coupling has rarely been paid attention to the study of black hole quasinormal modes. Specifically, we study the effect of derivative coupling on the quasinormal modes for four kinds of black holes. They are Reissner-Nordstrom black holes, Bardeen black holes, noncommunicative geometry inspired black holes and dilaton black holes. These black holes are not the solutions of vacuum Einstein equations which guarantees the effect of derivative coupling is not trivial. We find the influence of derivative coupling on the quasinormal modes roughly mimics the overtone numbers. In other words, there is a qualitative similarity in the trend of quasinormal modes frequencies due to increasing either the coupling constant and the overtone number.
description: 13 pages,7 figures. GRG accepted
Evaluation of performance of sorghum varieties grown in Tokyo for sugar accumulation and its correlation with vacuolar invertase genes SbInv1 and SbInv2
Creators: name: Shamitha Rao Morey
name: Hashida, Yoichi
name: Ohsugi, Ryu
name: Yamagishi, Junko
name: Aoki, Naohiro
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Biotechnology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: The sugar-accumulating potential of global and local sweet and grain sorghum varieties were tested under the local conditions. The basis for this study was the dependency of sugar accumulation on temperature and photoperiod. Thus, the efficacy of cultivars as a bioenergy source would need to be determined based on their performance under the local environmental conditions. A strong correlation of sucrose content with brix was observed, enabling large-scale screening of varieties for high sucrose content. The morphological characteristics inherent in sweet sorghum, such as tall stems, greater number of leaves and a longer vegetative period, were found to correlate with the total stem sugar content. Assessment of sugars along the stem revealed maximum sugar accumulation in the upper intermediate to upper internodes in most of the varieties tested. The maximum theoretical ethanol yield (MTEY), a function of brix and juice yield, was determined as a better indicator of testing the performance of a variety as a potential source of bioethanol, mainly due to a negative correlation of stem juiciness and sucrose content in the varieties tested. Further, the relative expression of vacuolar invertase genes, SbINV1 and SbINV2, was studied, and a strong negative correlation of SbINV2 to stem sucrose content was observed. This reveals a possibility of involvement of vacuolar invertase gene, SbINV2, in sugar accumulation in sweet sorghum stems, and as a key candidate for molecular breeding studies for higher stem sugar content.
Dalla Cea Nenia di Simonide all’Amante marina di Luce Irigaray Leggere il Lamento di Arianna di Friedrich Nietzsche
Creators: name: Santini, Carlotta
Publisher: name: La Rivista di Engramma
Year: 2020
Subjects: Friedrich Nietzsche
Ariadne
Simonides
Danae
Luce Irigaray

description: This contribution studies Friedrich Nietzsche's Ariadne’s Lament by placing it at the centre of a double-temporal irradiation. On the one hand, it highlights the close link, from the point of view of the form and of the content, of this Nietzschean 'lament' with one of the most famous θρῆνοι (threnoi) of antiquity, Danae's Lament, better known as Simonides’ Cea Nenia. On the other hand, it opens a perspective on contemporaneity, using one of the most beautiful reinterpretations of the Zarathustra / Klage der Ariadne complex by a contemporary philosopher, Luce Irigaray.
Cooper-Mesons in the Color-Flavor-Locked Superconducting Phase of Dense QCD
Creators: name: Wirzba, Andreas
Publisher: name: arXiv
Year: 2000
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: QCD superconductors in the color-flavor-locked (CFL) phase sustain excitations (``Cooper'' mesons) that can be described as pairs of particles or holes around a gapped Fermi surface. In weak coupling and to leading logarithm accuracy the masses, decay constants and form factors of the scalar, pseudoscalar, vector and axial-vector excitations, which explicitly are of finite size, can be calculated exactly. Furthermore, the constraints of this microscopic calculation on the effective-lagrangian description and the computation of the generalized triangle anomaly are discussed.
description: 8 pages, LaTeX, 3 figures.eps, uses sprocl.sty, invited talk for Bologna 2000
Characterization of recent and historical silks : effects of silk processing on chemical composition and amino acid racemization
Creators: name: Schmidt, Theresa
name: Koch, Jacqueline
name: Puchalla, Nils
name: Kramel, Annemarie E.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 540

description: In this work, the influence of dyeing, mordanting and degumming techniques on the amino acid (AA) composition and the AA racemization (AAR) of (non-)mulberry silks is studied by a chiral GC-MS method. The tested dyeing and mordanting procedures as well as a pre-treatment of the silk filaments with EDTA-DMF, which enables a parallel dyestuff analysis by HPLC-DAD, do not cause any significant change in the AA composition. However, an increased proportion of e.g. (D)-Asx can be observed for some of the mordanted BM silks. Increased D/L Asx ratios can also be observed in indigo dyed silks and after an alkaline treatment at 110°C (pH > 9). Furthermore, the GC-MS method was used for the characterization of historical silk samples from finding sites in the Tarim Basin (China). The analysis of these silk fabrics reveals the presence of degraded Bombyx silk with significantly increased D/L Val, D/L Glx and D/L Asx ratios. Including microscopic and spectroscopic investigations, the results of this multi-analytical approach offer insights into the silk processing techniques and raw materials used.
Experimental realization of a quantum algorithm
Creators: name: Chuang, Isaac L.
name: Vandersypen, Lieven M. K.
name: Zhou, Xinlan
name: Leung, Debbie W.
name: Lloyd, Seth
Publisher: name: arXiv
Year: 1998
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Nuclear magnetic resonance techniques are used to realize a quantum algorithm experimentally. The algorithm allows a simple NMR quantum computer to determine global properties of an unknown function requiring fewer function ``calls'' than is possible using a classical computer.
description: 4 pages, 3 figures, mypsfig2, revtex, revised version (no major changes), published in Nature, 393, 143-146 (1998)
On the dissolution of a solid spherical particle
Creators: name: Assunção, Milton
name: VYNNYCKY, MICHAEL
name: Moroney, Kevin
Publisher: name: University of Limerick
Year: 2024
Subjects: classificationCode: 49
subject: Mathematical sciences

description: The dissolution of a solid spherical particle is a canonical problem that finds many areas of application. In this work, we provide a generalized theory that takes into account the role of forced convection in the solvent (or, alternatively, the relative motion of the particle in the solvent), showing that the problem can be formulated in terms of four dimensionless parameters. Focusing on the case when one of these (the Reynolds number) is small, we consider asymptotic and numerical approaches to the problem, with a key outcome being a numerical method, implemented in the finite-element software Comsol Multiphysics, that is able to solve the resulting axisymmetric moving-boundary problem, even when over 90% of the particle has dissolved and its shape is far from spherical. We also demonstrate how this approach relates to and supersedes earlier efforts, providing a quantitative assessment of the often unquestioningly used Ranz–Marshall correlation for mass transfer from a sphere. In particular, we find that this correlation may overpredict the dissolution time by a factor of four, whereas a correla?tion by Clift et al. that is cited and used less often performs considerably better, even in the highly convection-dominated regime for which it was not originally intended.
TY Pup: a low-mass-ratio and deep contact binary as a progenitor candidate of luminous red novae
Creators: name: Sarotsakulchai, T.
name: Qian, S. B.
name: Soonthornthum, B.
name: Zhou, X.
name: Zhang, J.
name: Reichart, D. E.
name: Haislip, J. B.
name: Kouprianov, V. V.
name: Poshyachinda, S
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: TY Pup is a well-known bright eclipsing binary in southern hemisphere with an orbital period of 0.8192 days. New light curves in $B, V, (RI)_C$ bands were obtained with the 0.61-m reflector robotic telescope (PROMPT-8) at CTIO in Chile from January to February 2015 and from March to April 2017. By analyzing those photometric data with the W-D method, it is found that TY Pup is a low-mass-ratio ($q \sim$ 0.184) and deep contact binary with a high fill-out factor ($84.3\,\%$). An investigation of all available times of minimum light including three new ones obtained with the 60-cm and the 1.0-m telescopes at Yunnan Observatories in China indicates that the period change of TY Pup is complex. An upward parabolic variation in the $O-C$ diagram is detected to be superimposed on a cyclic oscillation. The upward parabolic change reveals a long-term continuous increase in the orbital period at a rate of $\mathrm{d}P/\mathrm{d}t = 5.57(\pm 0.08)\times10^{-8}$ d $\textrm{yr}^{-1}$. The period increase can be explained by mass transfer from the less massive component ($M_2 \sim 0.3 M_{\odot}$) to the more massive one ($M_1 \sim 1.65 M_{\odot}$) and the mass ratio of the binary system will become more smaller. In this way, the binary will be merging when it meets the criterion that the orbital angular momentum is less than 3 times the total spin angular momentum, i.e., $J_{orb} < 3J_{rot}$. This suggests that the system will finally merge into a rapid-rotating single star and may produce a luminous red nova. The cyclic oscillation in the $O-C$ diagram can be interpreted by the light-travel time effect (LITE) via the presence of an additional companion.
description: 19 pages, 9 figures
Large magneto-optical Kerr effect and imaging of magnetic octupole domains in an antiferromagnetic metal
Creators: name: Higo, Tomoya
name: Man, Huiyuan
name: Gopman, Daniel B.
name: Wu, Liang
name: Koretsune, Takashi
name: Erve, Olaf M. J. van 't
name: Kabanov, Yury P.
name: Rees, Dylan
name: Li, Yufan
name: Suzuki, Michi-To
name: Patankar, Shreyas
name: Ikhlas, Muhammad
name: Chien, C. L.
name: Arita, Ryotaro
name: Shull, Robert D.
name: Orenstein, Joseph
name: Nakatsuji, Satoru
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: When a polarized light beam is incident upon the surface of a magnetic material, the reflected light undergoes a polarization rotation. This magneto-optical Kerr effect (MOKE) has been intensively studied in a variety of ferro- and ferrimagnetic materials because it provides a powerful probe for electronic and magnetic properties as well as for various applications including magneto-optical recording. Recently, there has been a surge of interest in antiferromagnets (AFMs) as prospective spintronic materials for high-density and ultrafast memory devices, owing to their vanishingly small stray field and orders of magnitude faster spin dynamics compared to their ferromagnetic counterparts. In fact, the MOKE has proven useful for the study and application of the antiferromagnetic (AF) state. Although limited to insulators, certain types of AFMs are known to exhibit a large MOKE, as they are weak ferromagnets due to canting of the otherwise collinear spin structure. Here we report the first observation of a large MOKE signal in an AF metal at room temperature. In particular, we find that despite a vanishingly small magnetization of $M \sim$0.002 $μ_{\rm B}$/Mn, the non-collinear AF metal Mn$_3$Sn exhibits a large zero-field MOKE with a polar Kerr rotation angle of 20 milli-degrees, comparable to ferromagnetic metals. Our first-principles calculations have clarified that ferroic ordering of magnetic octupoles in the non-collinear Neel state may cause a large MOKE even in its fully compensated AF state without spin magnetization. This large MOKE further allows imaging of the magnetic octupole domains and their reversal induced by magnetic field. The observation of a large MOKE in an AF metal should open new avenues for the study of domain dynamics as well as spintronics using AFMs.
description: 30 pages, 4 figures
Percutaneous repair of moderate-to-severe or severe functional mitral regurgitation in patients with symptomatic heart failure : baseline characteristics of patients in the RESHAPE-HF2 trial and comparison to COAPT and MITRA-FR trials
Creators: name: Anker, Stefan
name: Tongers, Joern
name: [Und Viele Weitere]
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Aim: The RESHAPE-HF2 trial is designed to assess the efficacy and safety of the MitraClip device system for the treatment of clinically important functional mitral regurgitation (FMR) in patients with heart failure (HF). This report describes the baseline characteristics of patients enrolled in the RESHAPE-HF2 trial compared to those enrolled in the COAPT and MITRA-FR trials. Methods and results: The RESHAPE-HF2 study is an investigator-initiated, prospective, randomized, multicentre trial including patients with symptomatic HF, a left ventricular ejection fraction (LVEF) between 20% and 50% with moderate-to-severe or severe FMR, for whom isolated mitral valve surgery was not recommended. Patients were randomized 1:1 to a strategy of delivering or withholding MitraClip. Of 506 patients randomized, the mean age of the patients was 70 ± 10 years, and 99 of them (20%) were women. The median EuroSCORE II was 5.3 (2.8–9.0) and median plasma N-terminal pro-B-type natriuretic peptide (NT-proBNP) was 2745 (1407–5385) pg/ml. Most patients were prescribed beta-blockers (96%), diuretics (96%), angiotensin-converting enzyme inhibitors/angiotensin receptor blockers/angiotensin receptor–neprilysin inhibitors (82%) and mineralocorticoid receptor antagonists (82%). The use of sodium–glucose cotransporter 2 inhibitors was rare (7%). Cardiac resynchronization therapy (CRT) devices had been previously implanted in 29% of patients. Mean LVEF, left ventricular end-diastolic volume and effective regurgitant orifice area (EROA) were 31 ± 8%, 211 ± 76 ml and 0.25 ± 0.08 cm2, respectively, whereas 44% of patients had mitral regurgitation severity of grade 4+. Compared to patients enrolled in COAPT and MITRA-FR, those enrolled in RESHAPE-HF2 were less likely to have mitral regurgitation grade 4+ and, on average, HAD lower EROA, and plasma NT-proBNP and higher estimated glomerular filtration rate, but otherwise had similar age, comorbidities, CRT therapy and LVEF. Conclusion: Patients enrolled in RESHAPE-HF2 represent a third distinct population where MitraClip was tested in, that is one mainly comprising of patients with moderate-to-severe FMR instead of only severe FMR, as enrolled in the COAPT and MITRA-FR trials. The results of RESHAPE-HF2 will provide crucial insights regarding broader application of the transcatheter edge-to-edge repair procedure in clinical practice.
Spin–spin coupling constants in linear substituted HCN clusters
Creators: name: Puspitapallab Chaudhuri
name: Ducati, Lucas C.
name: Angsula Ghosh
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: The indirect nuclear spin–spin coupling constants of homogeneous hydrogen-bonded HCN clusters are compared with those of inhomogeneous HCN clusters where one of the terminal HCN molecules is substituted by its isomer HNC and by LiCN. Both the intra- and intermolecular (across the hydrogen bond) coupling constants are calculated for the linear form of the clusters containing up to three molecular monomers using different hybrid DFT functionals. The geometry of the monomers and clusters is optimised at the B3LYP/6-311++G(d,p) level. The effect of substitution by the ionic compound LiCN on the coupling constants of HCN is found to be more pronounced than that by HNC. The Ramsey parameters that form the total spin–spin coupling constants are also analysed individually. Among the four Ramsey parameters, the Fermi Contact term is found to be the dominant contributor to the total coupling constants in most cases. The presence of LiCN in the cluster tends to decrease the intramolecular Fermi Contact values, while HNC increases the same in all dimers and trimers. The contributions of localised molecular orbitals have been analysed for the HCN–HNC cluster to obtain some additional insight about the SSCC transmission mechanism along the coupling pathway.
The Goto-Imamura-Schwinger Term and Renormalization Group
Creators: name: Chaichian, Masud
name: Nishijima, Kazuhiko
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In connection with the question of color confinement the origin of the Goto-Imamura-Schwinger term has been studied with the help of renormalization group. An emphasis has been laid on the difference between theories with and without a cut-off.
description: LaTeX, 14 pages
NOVEL TECHNOLOGY AND CONTROL FOR ANKLE-FOOT ORTHOSIS IN FOOT DROP: A REVIEW
Creators: name: SAROJ KANTA BEHURA
name: Dr. KATHIRVELAN J
Publisher: name: Zenodo
Year: 2024
Subjects: Foot Drop; Ankle-Foot Orthosis; Actuator; Gait Cycle; Artificial Neural Network(ANN); Brain Computer Interface (BCI); Electromyography (EMG)

description: Abstract

Foot drop is one of the most common causes of movement disorder. Various designs of ankle foot orthosis (AFO) have been developed in the last few decades. These devices aim to reduce the impact of impairments in the lower limb neuromuscular motor system on gait. Existing AFO devices include passive devices with fixed and articulated joints, semi-active devices that modulate damping at the joint, and active devices that make use of a variety of technologies to generate power to move the foot. This paper reviews a variety of designs with their relevant actuating mechanisms, control strategies, characteristics, advantages, and drawbacks with a futuristic intelligent ideal AFO.
The Algebraic Connectivity of a Graph and its Complement
Creators: name: Afshari, B.
name: Akbari, S.
name: Moghaddamzadeh, M. J.
name: Mohar, B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C50

description: For a graph $G$, let $λ_2(G)$ denote its second smallest Laplacian eigenvalue. It was conjectured that $λ_2(G) + λ_2(\overline G) \ge 1$, where $\overline G$ is the complement of $G$. In this paper, it is shown that $\max\{λ_2(G), λ_2(\overline G)\} \ge 2/5$.
Current-induced domain wall motion in a van der Waals ferromagnet Fe3GeTe2
Creators: name: Zhang, Wenjie
name: Ma, Tianping
name: Hazra, Binoy Krishna
name: Meyerheim, Holger
name: Rigvedi, Prajwal
name: Yin, Zihan
name: Srivastava, Abhay Kant
name: Wang, Zhong
name: Gu, Ke
name: Zhou, Shiming
name: Wang, Shouguo
name: Yang, See-Hun
name: Guan, Yicheng
name: Parkin, Stuart S. P.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 530

description: The manipulation of spin textures by spin currents is of fundamental and technological interest. A particularly interesting system is the 2D van der Waals ferromagnet Fe3GeTe2, in which Néel-type skyrmions have recently been observed. The origin of these chiral spin textures is of considerable interest. Recently, it was proposed that these derive from defects in the structure that lower the symmetry and allow for a bulk vector Dzyaloshinsky-Moriya interaction. Here, we demonstrate current-induced domain wall motion in Fe3GeTe2 flakes, in which the maximum domain wall velocity is an order of magnitude higher than those reported in previous studies. In heterostructures with Pt or W layers on top of the Fe3GeTe2 flakes, domain walls can be moved via a combination of spin transfer and spin-orbit torques. The competition between these torques leads to a change in the direction of domain wall motion with increasing magnitude of the injected current.
The spatial distribution of tree-tree interaction effects on soil microbial biomass and respiration
Creators: name: Christel, Henriette
name: Bruelheide, Helge
name: Cesarz, Simone
name: Eisenhauer, Nico
name: Hähn, Georg J. A.
name: Beugnon, Rémy
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 580

description: The capacity of forests to sequester carbon in both above- and belowground compartments is a crucial tool to mitigate rising atmospheric carbon concentrations. Belowground carbon storage in forests is strongly linked to soil microbial communities that are the key drivers of soil heterotrophic respiration, organic matter decomposition and thus nutrient cycling. However, the relationships between tree diversity and soil microbial properties such as biomass and respiration remain unclear with inconsistent findings among studies. It is unknown so far how the spatial configuration and soil depth affect the relationship between tree richness and microbial properties. Here, we studied the spatial distribution of soil microbial properties in the context of a tree diversity experiment by measuring soil microbial biomass and respiration in subtropical forests (BEF-China experiment). We sampled soil cores at two depths at five locations along a spatial transect between the trees in mono- and hetero-specific tree pairs of the native deciduous species Liquidambar formosana and Sapindus saponaria. Our analyses showed decreasing soil microbial biomass and respiration with increasing soil depth and distance from the tree in mono-specific tree pairs. We calculated belowground overyielding of soil microbial biomass and respiration – which is higher microbial biomass or respiration than expected from the monocultures – and analysed the distribution patterns along the transect. We found no general overyielding across all sampling positions and depths. Yet, we encountered a spatial pattern of microbial overyielding with a significant microbial overyielding close to L. formosana trees and microbial underyielding close to S. saponaria trees. We found similar spatial patterns across microbial properties and depths that only differed in the strength of their effects. Our results highlight the importance of small-scale variations of tree–tree interaction effects on soil microbial communities and functions and are calling for better integration of within-plot variability to understand biodiversity–ecosystem functioning relationships.
MOESM1 of miR-380-3p regulates melanogenesis by targeting SOX6 in melanocytes from alpacas (Vicugna pacos)
Creators: name: Liu, Xuexian
name: Du, Bin
name: Zhang, Pengqian
name: Zhang, Junzhen
name: Zhu, Zhiwei
name: Liu, Bo
name: Fan, Ruiwen
Publisher: name: figshare
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: Additional file 1: Table S1. Primers used in the study.
Left ventricular structure and function following renal sympathetic denervation in patients with HFpEF : an echocardiographic 9-year long-term follow-up
Creators: name: Vogt, Alexander
name: Plehn, Alexander
name: Atti, Carlo
name: Nussbaum, Michael
name: Tongers, Jörn
name: Sedding, Daniel
name: Dutzmann, Jochen
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Background: High blood pressure is a major risk factor for cardiac remodeling and left ventricular hypertrophy, increasing cardiovascular risk and leading to heart failure with preserved ejection fraction (HFpEF). Since renal sympathetic denervation (RDN) reduces blood pressure in the long term, we aimed to investigate the long-term effect of RDN in patients with HFpEF in the present analysis. Methods: Patients previously enrolled in a local RDN registry who underwent high-frequency RDN with the use of the Symplicity Flex® renal denervation system between 2011 and 2014 were followed up. The patients were assessed by 24-h ambulatory blood pressure measurement, transthoracic echocardiography, and laboratory tests. We used the echocardiographic and biomarker criteria of the Heart Failure Association (HFA)-PEFF (Pre-test assessment, Echocardiography and Natriuretic Peptide Score, Funkctional testing, and Final aetiology) score to identify patients with HFpEF. Results: Echocardiographic assessment was available for 70 patients at a 9-year long-term follow-up. Of these patients, 21 had HFpEF according to the HFA-PEFF score. We found a significant reduction of the HFA-PEFF score from 5.48 ± 0.51 points at baseline to 4.33 ± 1.53 points at the 9-year follow-up (P < 0.01). This decrease was due to a greater reduction in morphological and biomarker subcategories [from 1.95 ± 0.22 to 1.43 ± 0.51 points (P < 0.01) and from 1.52 ± 0.52 to 0.90 ± 0.63 points (P < 0.01), respectively] than in the functional one. Morphologically, there was a reduction in left ventricular hypertrophy and left atrial dilation. Conclusions: The present analysis suggests that RDN may lead to a regression of the extent of HFpEF beyond a reduction in blood pressure and thus possibly contribute to an improvement in prognosis. More detailed information will be provided by ongoing randomized sham-controlled trials.
Planning benchmark study for stereotactic body radiation therapy of pancreas carcinomas with simultaneously integrated boost and protection : results of the DEGRO/DGMP working group on stereotactic radiation therapy and radiosurgery
Creators: name: Moustakis, Christos
name: Kornhuber, Christine Barbara
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 615

description: Purpose: The proximity or overlap of planning target volume (PTV) and organs-at-risk (OARs) poses a major challenge in stereotactic body radiation therapy (SBRT) of pancreatic cancer (PACA). This international treatment planning benchmark study investigates whether simultaneous integrated boost (SIB) and simultaneous integrated protection (SIP) concepts in PACA SBRT can lead to improved and harmonized plan quality. Methods and materials: A multiparametric specification of desired target doses (gross target volume [GTV]D50%, GTVD99%, PTVD95%, and PTV0.5cc) with 2 prescription doses of GTVD50% = 5 × 9.2Gy (46 Gy) and GTVD50% = 8 × 8.25 Gy (66 Gy) and OAR limits were distributed with planning computed tomography and contours from 3 PACA patients. In phase 1, plans were ranked using a scoring system for comparison of trade-offs between GTV/PTV and OAR. In phase 2, replanning was performed for the most challenging case and prescription with dedicated SIB and SIP contours provided for optimization after group discussion. Results: For all 3 cases and both phases combined, 292 plans were generated from 42 institutions in 5 countries using commonly available treatment planning systems. The GTVD50% prescription was performed by only 76% and 74% of planners within 2% for 5 and 8 fractions, respectively. The GTVD99% goal was mostly reached, while the balance between OAR and target dose showed initial SIB/SIP-like optimization strategies in about 50% of plans. For plan ranking, 149 and 217 score penalties were given for 5 and 8 fractions, pointing to improvement possibilities. For phase 2, the GTVD50% prescription was performed by 95% of planners within 2%, and GTVD99% as well as OAR doses were better harmonized with notable less score penalties. Fourteen of 19 planners improved their plan rank, 9 of them by at least 2 ranks. Conclusions: Dedicated SIB/SIP concepts in combination with multiparametric prescriptions and constraints can lead to overall harmonized and high treatment plan quality for PACA SBRT. Standardized SIB/SIP treatment planning in multicenter clinical trials appears feasible after group consensus and training.
A Survey of Attention Management Systems in Ubiquitous Computing Environments
Creators: name: Anderson, Christoph
name: Hübener, Isabel
name: Seipp, Ann-Kathrin
name: Ohly, Sandra
name: David, Klaus
name: Pejovic, Veljko
Publisher: name: arXiv
Year: 2018
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Today's information and communication devices provide always-on connectivity, instant access to an endless repository of information, and represent the most direct point of contact to almost any person in the world. Despite these advantages, devices such as smartphones or personal computers lead to the phenomenon of attention fragmentation, continuously interrupting individuals' activities and tasks with notifications. Attention management systems aim to provide active support in such scenarios, managing interruptions, for example, by postponing notifications to opportune moments for information delivery. In this article, we review attention management system research with a particular focus on ubiquitous computing environments. We first examine cognitive theories of attention and extract guidelines for practical attention management systems. Mathematical models of human attention are at the core of these systems, and in this article, we review sensing and machine learning techniques that make such models possible. We then discuss design challenges towards the implementation of such systems, and finally, we investigate future directions in this area, paving the way for new approaches and systems supporting users in their attention management.
description: 27 pages, 7 figures
Observation of Electric Octupole Emission Lines Strongly Enhanced by an Anomalous Behavior of Cascading Contribution
Creators: name: Sakaue, Hiroyuki A.
name: Kato, Daiji
name: Murakami, Izumi
name: Ohashi, Hayato
name: Nakamura, Nobuyuki
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present extreme ultraviolet spectra of Ag-like W$^{27+}$ observed with an electron beam ion trap. In the spectra, the $4f_{7/2, 5/2}$ -- $5s$ transitions are identified as the first observation of spontaneous electric octupole emission. Our theoretical investigation shows that the emission line intensity is strongly and specifically enhanced at the atomic number 74 by an anomalous behavior of cascading contribution to $5s$ via $5p\leftarrow5d$.
A Lattice Evaluation of the Deep-Inelastic Structure Functions of the Nucleon
Creators: name: Göckeler, M.
name: Horsley, R.
name: Ilgenfritz, E. -M.
name: Oelrich, H.
name: Perlt, H.
name: Rakow, P.
name: Schierholz, G.
name: Schiller, A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The lower moments of the unpolarized and polarized deep-inelastic structure functions of the nucleon are calculated on the lattice. The calculation is done with Wilson fermions and for three values of the hopping parameter $κ$, so that we can perform the extrapolation to the chiral limit. Particular emphasis is put on the renormalization of lattice operators. The renormalization constants, which lead us from lattice to continuum operators, are computed perturbatively to one loop order as well as non-perturbatively.
description: 11 pages, uuencoded postscript file. Talk given at Workshop QCD on Massively Parallel Computers, Yamagata, March 1995. Also available from http://www.desy.de/pub/preprints/desy/1995
FLRW cosmological models with quark and strange quark matters in f(R,T) gravity
Creators: name: Nagpal, Ritika
name: Singh, J. K.
name: Aygün, S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this paper, we have studied the magnetized quark matter (QM) and strange quark matter (SQM) distributions in the presence of $ f(R,T)$ gravity in the background of Friedmann--Lemaître--Robertson--Walker (FLRW) metric. To get exact solutions of modified field equations we have used $f(R,T) = R + 2 f(T)$ model given by Harko et al. with two different parametrization of geometrical parameters \textit{i.e.} the parametrization of the deceleration parameter $ q $, and the scale factor $ a $ in hybrid expansion form. Also, we have obtained Einstein Static Universe (ESU) solutions for QM and SQM distributions in $f(R,T)$ gravity and General Relativity (GR). All models in $f(R,T)$ gravity and GR for FRW and ESU Universes with QM also SQM distributions, we get zero magnetic field. These results agree with the solutions of Akta{ş and Aygün in $f(R,T)$ gravity. However, we have also discussed the physical consequences of our obtained models.