cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Development of an affinity-guided probe with turn-on fluorescence to selectively label kainate receptors
Creators: name: Tardif, Anthony
Publisher: name: University of British Columbia
Year: 2024

description: Kainate receptors (KARs) are classified as one of three main subfamilies of ionotropic glutamate receptors (iGluRs) located in the brain. They have been shown to participate in neurological homeostasis and normal brain development processes such as synapse elimination; however, excessive synapse elimination is a hallmark of neurodegenerative diseases. Despite a strong association between KARs and neurodegeneration, our understanding of the underlying mechanisms that contribute to excessive synapse elimination is hindered by the lack of chemical tools required to study them. The development of new chemical tools to study KARs will provide a better understanding of their role in neurodegenerative processes and help identify therapeutics to treat related symptoms and diseases. This thesis details the synthesis of a fluorescent kainate probe that selectively labels KARs to address this knowledge gap. The kainate probe consists of three smaller molecules; a kainoid ligand, a linker, and a squaraine fluorophore which were all individually synthesized and then coupled to assemble the probe. Chapter 1 provides a brief introduction to kainate receptors and their role in the brain, as well as an overview of fluorescent protein imaging methods and the concept of turn-on fluorescence. Chapter 2 reviews the structural features that are essential to designing kainoid ligands, precedents in the kainoid syntheses, and the synthesis of a novel kainoid analog, (4R)-4-azidokainic acid, to enable late-stage derivatization at the C4 position of kainic acid. Chapter 3 contextualizes the biological applications of squaraine dyes and how they can be utilized to achieve turn-on fluorescence with improved contrast during fluorescent imaging. Next, it describes the syntheses of squaraine and aminosquaraine intermediates, along with an alkyne linker. Chapter 3 concludes with a detailed account of the synthetic steps performed and the challenges faced towards assembling the kainate probe. Overall, the synthesis of a novel kainoid analog, (4R)-4-azidokainic acid, serves as a versatile kainoid intermediate, with late-stage modularity, for the development of new kainate probes. The synthetic routes established in Chapter 3 constitute significant progress towards a unique kainate probe with selective turn-on fluorescence to study kainate receptors.
Chern-Simons S-Brane Solutions in M-theory and Accelerating Cosmologies
Creators: name: Deger, Nihat Sadik
name: Kaya, Ali
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct an intersecting S-brane solution of 11-dimensional supergravity for which the contribution of the Chern-Simons term to the field equations is non-zero. After studying some of its properties, we consider three different compactifications (each with 3 separate subcases) of this system to 4-dimensions. Two of these give accelerating cosmologies, however their expansion factors are of order unity. We also find two static versions of this configuration and its dimensional reduction to type IIA theory.
description: 18 pages, v3: a new static solution and references added, v4: references added, to appear in JHEP
STUDY ROLE OF HYDROXYANTHRACEN ON CELLULAR ACTIVITY
Creators: name: Pelini, Paolo
Publisher: name: Zenodo
Year: 2021
Subjects: Aloe, Paolo Pelini,Cancer, Mutation,Aloe Emodin

description: The purpose of this study was to determine the different action at cellular level
 in a biological model of Saccharomyces cervisiae yeast of single molecules of Hydroxyanthracene
 and the same action elicited by using the entire Aloe extract
A characterization of long exact sequences coming from the snake lemma
Creators: name: Stovicek, Jan
Publisher: name: arXiv
Year: 2009
Subjects: subject: Category Theory (math.CT)
subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 18E30 (Primary) 18G10 (Secondary)

description: Given an abelian category, we characterize the long exact sequences of length six which can be obtained from the snake lemma. Equivalently, these are the long exact sequences which arise as the homology of a triangle in the corresponding derived bounded category.
description: 10 pages, minor corrections, in particular making the arguments regarding the construction of diagrams (\Delta) and (\Xi) more precise
XMM-Newton detects a relativistically broadened iron line in the spectrum of the ms X-ray pulsar SAX J1808.4-3658
Creators: name: Papitto, A.
name: Di Salvo, T.
name: D'Aì, A.
name: Iaria, R.
name: Burderi, L.
name: Riggio, A.
name: Menna, M. T.
name: Robba, N. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on a 63-ks long XMM-Newton observation of the accreting millisecond pulsar SAX J1808.4-3658 during the latest X-ray outburst which started on September 21st 2008. The pn spectrum shows a highly significant emission line in the energy band where the iron K-alpha line is expected, and which we identify as emission from neutral (or mildly ionized) iron. The line profile appears to be quite broad (more than 1 keV FWHM) and asymmetric; the most probable explanation for this profile is Doppler and relativistic broadening from the inner accretion disc. From a fit with a diskline profile we find an inner radius of the disc of 8.7^(+3.7)_(-2.7) R_g, corresponding to 18.0^(+7.6)_(-5.6) km for a 1.4 Msun neutron star. The disc therefore appears truncated inside the corotation radius (31 km for SAX J1808.4-3658) in agreement with the fact that the source was still showing pulsations during the XMM-Newton observation.
description: 5 pages, 3 figures, accepted for publication in A&A Letters, typos corrected, references added
Designing rotational motion of charges on plasmonic nanostructures excited by circularly polarized light
Creators: name: Ichiji, Naoki
name: Ishida, Takuya
name: Morichika, Ikki
name: Oue, Daigo
name: Tatsuma, Tetsu
name: Ashihara, Satoshi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Rotational motion of charges in plasmonic nanostructures plays an important role in transferring angular momentum between light and matter on the nanometer scale. Although sophisticated control of rotational charge motion has been achieved using spatially structured light, its extension to simultaneous excitation of the same charge motion in multiple nanostructures is not straightforward. In this study, we perform model calculations to show that spatially homogeneous circularly polarized (CP) light can excite rotational charge motions with a high degrees of freedom by exploiting the rotational symmetry of the plasmonic structure and that of the plasmon mode. Finite-difference time-domain simulations demonstrate selective excitation of rotational charge motion for both isolated nanoplates and periodic array structures, showing that complex charge rotations can be manipulated by plane CP waves in a wide range of plasmonic structures.
description: 9 pages, 5 figures
The Vector Meson And Heavy Meson Strong Interaction
Creators: name: Huang, Peng-Zhi
name: Zhang, Liang
name: Zhu, Shi-Lin
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the coupling constants between the light vector mesons and heavy mesons within the framework of the light-cone QCD sum rule in the leading order of heavy quark effective theory. The sum rules are very stable with the variations of the Borel parameter and the continuum threshold. The extracted couplings will be useful in the study of the possible heavy meson molecular states. They may also helpful in the interpretation of the proximity of X(3872), Y(4260) and Z(4430) to the threshold of two charmed mesons through the couple-channel mechanism.
description: 14 pages, 3 figures
Pressure effects on the magnetic structure in La0.5Ca0.5-xSrxMnO3 (0.1 -< x -< 0.4) manganites
Creators: name: Dhiman, Indu
name: Strässle, Thierry
name: Keller, L.
name: Padmanabhan, B.
name: Das, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effect of high pressure (0 - 8 GPa) on the magnetic structure of polycrystalline samples of La0.5Ca0.5-xSrxMnO3 (0.1 -< x -< 0.4) manganites at 5 K is investigated using neutron diffraction technique. Application of pressure is found to modify the previously reported magnetic structure, observed under ambient conditions, in these compounds [I. Dhiman et al., Phys. Rev. B 77, 094440 (2008)]. In x = 0.1 composition, at 4.6(2) GPa and beyond, A-type antiferromagnetic structure is found to coexist with CE-type antiferromagnetic phase, observed at ambient pressure, with TN ~ 150 K. For x = 0.3 sample, as a function of pressure the CE-type phase is fully suppressed at 2.3(1) GPa and A-type antiferromagnetic phase is favored. Further Sr doping at x = 0.4, the A-type antiferromagnetic phase is observed at ambient pressure and for T < TN (~ 250K). This phase is retained in the studied pressure range. However, the magnetic moment progressively reduces with increasing pressure, indicating the suppression of A-type antiferromagnetic phase. The present study brings out the fragile nature of the CE-type antiferromagnetic state in half doped manganites as a function of pressure and disorder σ2. We observe that pressure required for destabilizing the CE-type antiferromagnetic state is reduced with increasing disorder σ2. External pressure and changing A-site ionic radii have analogous effect on the magnetic structure.
description: 9 pages, 6 figures, 1 table, To appear in Physical Review B
Synthetic half-integer magnetic monopole and single-vortex dynamics in spherical Bose-Einstein condensates
Creators: name: Chen, Xi-Yu
name: Jiang, Lijia
name: Bai, Wen-Kai
name: Yang, Tao
name: Zheng, Jun-Hui
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Magnetic monopoles are crucial in explaining the quantization of electric charges and quantum Hall effects, while artificially creating a minimal magnetic monopole in experiments remains a challenge. Here, we come up with a flexible way to simulate a half-integer-type monopole in Bose gases and investigate the induced vortex dynamics on a sphere. We list the possible experiment parameter settings for different isotopes and discuss their experimental feasibility. With the assumption of a rigid monopole-vortex structure, we analytically predict the vortex trajectory in an external magnetic field. We then confirm the result by numerically solving the Gross-Pitaevskii equation, which employs two gauges simultaneously (the Wu-Yang approach) to prevent singularity in the one-gauge method when a monopole is present. The study offers significant insight into the characteristics of monopoles and vortices, facilitating avenues for experimental validation.
description: 11 pages, 4 figures, 1 table
Geometric Invariant Theory and Generalized Eigenvalue Problem II
Creators: name: Ressayre, Nicolas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let $G$ be a connected reductive subgroup of a complex connected reductive group $\hat{G}$. Fix maximal tori and Borel subgroups of $G$ and $\hat{G}$. Consider the cone $LR^\circ(\hat{G},G)$ generated by the pairs $(ν,\hatν)$ of strictly dominant characters such that $V_ν$ is a submodule of $V_{\hatν}$. The main result of this article is a bijective parametrisation of the faces of $LR^\circ(\hat G,G)$. We also explain when such a face is contained in another one. In way, we obtain results about the faces of the Dolgachev-Hu's $G$-ample cone. We also apply our results to reprove known results about the moment polytopes.
Measuring balance deficits in chronic inflammatory demyelinating polyneuropathy
Creators: name: Pudwell, Heather
Publisher: name: University of British Columbia
Year: 2024

description: Chronic inflammatory demyelinating polyneuropathy (CIDP) is an immune-mediated peripheral polyneuropathy leading to progressive demyelination of (primarily) spinal nerve roots, proximal nerve trunks, and major nerve plexuses. Symptoms include a progressive loss of strength, sensation, and reflex responses. CIDP is unique in that deficits are seen both proximally and distally. A common treatment for CIDP, intravenous immunoglobulins (IVIg), has been effective in slowing the demyelination process and allowing for remyelination to occur. Patients with CIDP often report issues with balance as a main concern. Most balance research in CIDP has only used static and/or subjective clinical measures. Dynamic posturography has been used in other patient groups, but has yet to be used in a proximal/distal combined polyneuropathy like CIDP. Therefore, this thesis had two goals: (1) characterize balance (static and dynamic) in CIDP, and (2) determine if/how treatment affects balance in CIDP. Data from 13 CIDP patients and 13 healthy controls was used in analyses. Participants completed two testing sessions, approximately 4 weeks apart (patients completed one visit with IVIg at its peak effect and one when its effects were wearing off). During each session, participants completed strength/sensory assessments, clinical balance tests, static balance tasks, modified stance and gait tasks, and a series of perturbations on a multi-directional tilting platform. Consistent with previous work, results showed differences between the CIDP and HC groups across clinical, static, and modified stance and gait tasks. This was the first study to investigate muscle responses to unexpected support surface perturbations in CIDP, and there was evidence for delayed and reduced responses across multiple perturbation directions. Additionally, CIDP patients showed improved performance across static, modified stance and gait, and dynamic tasks with medication. This is the first study to demonstrate such differences with medication using dynamic posturography in CIDP.
Supplementary Material from Predator-induced transgenerational plasticity of parental care behaviour in male threespined stickleback fish across two generations
Creators: name: Hellmann, Jennifer K.
name: Keagy, Jason
name: Carlson, Erika R.
name: Kempfer, Shayne
name: Bell, Alison M.
Publisher: name: The Royal Society
Year: 2023
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified
classificationCode: 310499
subject: Evolutionary biology not elsewhere classified
classificationCode: 310901
subject: Animal behaviour

description: Individual fanning curves
Energy landscape and phase transitions in the self-gravitating ring model
Creators: name: Nardini, Cesare
name: Casetti, Lapo
Publisher: name: arXiv
Year: 2009
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We apply a recently proposed criterion for the existence of phase transitions, which is based on the properties of the saddles of the energy landscape, to a simplified model of a system with gravitational interactions, referred to as the self-gravitating ring model. We show analytically that the criterion correctly singles out the phase transition between a homogeneous and a clustered phase and also suggests the presence of another phase transition, not previously known. On the basis of the properties of the energy landscape we conjecture on the nature of the latter transition.
Results from the First Science Run of the ZEPLIN-III Dark Matter Search Experiment
Creators: name: Lebedenko, V. N.
name: Araujo, H. M.
name: Barnes, E. J.
name: Bewick, A.
name: Cashmore, R.
name: Chepel, V.
name: Currie, A.
name: Davidge, D.
name: Dawson, J.
name: Durkin, T.
name: Edwards, B.
name: Ghag, C.
name: Horn, M.
name: Howard, A. S.
name: Hughes, A. J.
name: Jones, W. G.
name: Joshi, M.
name: Kalmus, G. E.
name: Kovalenko, A. G.
name: Lindote, A.
name: Liubarsky, I.
name: Lopes, M. I.
name: Luscher, R.
name: Majewski, P.
name: Murphy, A. StJ.
name: Neves, F.
name: da Cunha, J. Pinto
name: Preece, R.
name: Quenby, J. J.
name: Scovell, P. R.
name: Silva, C.
name: Solovov, V. N.
name: Smith, N. J. T.
name: Smith, P. F.
name: Stekhanov, V. N.
name: Sumner, T. J.
name: Thorne, C.
name: Walker, R. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The ZEPLIN-III experiment in the Palmer Underground Laboratory at Boulby uses a 12kg two-phase xenon time projection chamber to search for the weakly interacting massive particles (WIMPs) that may account for the dark matter of our Galaxy. The detector measures both scintillation and ionisation produced by radiation interacting in the liquid to differentiate between the nuclear recoils expected from WIMPs and the electron recoil background signals down to ~10keV nuclear recoil energy. An analysis of 847kg.days of data acquired between February 27th 2008 and May 20th 2008 has excluded a WIMP-nucleon elastic scattering spin-independent cross-section above 8.1x10(-8)pb at 55GeV/c2 with a 90% confidence limit. It has also demonstrated that the two-phase xenon technique is capable of better discrimination between electron and nuclear recoils at low-energy than previously achieved by other xenon-based experiments.
description: 12 pages, 17 figures
Real-time approach to quark confined systems at finite temperatures
Creators: name: Nefediev, A. V.
name: Ribeiro, J. E. F. T.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Generalised Nambu-Jona-Lasinio model for QCD is considered at finite temperatures in the framework of a real-time formalism. The proposed approach allows one to study various properties of the model at T>0, such as chiral symmetry breaking and restoration, properties of the bound-state spectrum, and so on.
description: LaTeX2e, 6 pages, uses jetpl.cls (included), version to appear in JETP Lett
Does Australia need nine governments?
Creators: name: Kelly, Chris
Publisher: name: figshare
Year: 2021
Subjects: subject: 160601 Australian Government and Politics
subject: FOS: Political science

description: Australia employs 1.3 million public servants across nine government departments of Education, nine departments of Health, nine departments of Transport, eight departments of Infrastructure, nine departments for the Environment; overseen by eight corruption watchdogs. All doing the same thing differently in each state and territory. Ninefold multiplication of near identical departments resembles Mickey Mouse’s dilemma in The Sorcerer’s Apprentice creating direct cost to taxpayers and friction cost arising from inter-governmental inconsistency. This study calculates AUD $110 billion savings are achievable each year in perpetuity by streamlining the inefficient replication of departments and back-office support functions across Australia’s states and territories. Published in The Mandarin (Sep 2021). 
Superconformal Algebras and Mock Theta Functions
Creators: name: Eguchi, Tohru
name: Hikami, Kazuhiro
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is known that characters of BPS representations of extended superconformal algebras do not have good modular properties due to extra singular vectors coming from the BPS condition. In order to improve their modular properties we apply the method of Zwegers which has recently been developed to analyze modular properties of mock theta functions. We consider the case of N=4 superconformal algebra at general levels and obtain the decomposition of characters of BPS representations into a sum of simple Jacobi forms and an infinite series of non-BPS representations. We apply our method to study elliptic genera of hyper-Kahler manifolds in higher dimensions. In particular we determine the elliptic genera in the case of complex 4 dimensions of the Hilbert scheme of points on K3 surfaces K^{[2]} and complex tori A^{[[3]]}.
description: 28 pages
Lecture Notes: many-body quantum dynamics with MCTDH-X
Creators: name: Molignini, Paolo
name: Dutta, Sunayana
name: Fasshauer, Elke
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The lecture notes on "Many-body Quantum Dynamics with MCTDH-X," adapted from the 2023 Heidelberg MCTDH Summer School, provide an in-depth exploration of the Multiconfigurational Time-Dependent Hartree approach for indistinguishable particles. They serve as a comprehensive guide for understanding and utilizing the MCTDH-X software for both bosonic and fermionic systems. The tutorial begins with an introduction to the MCTDH-X software, highlighting its capability to handle various quantum systems, including those with internal degrees of freedom and long-range interactions. The theoretical foundation is then laid out on how to solve the time-dependent and time-independent Schrödinger equations for many-body systems. The workflow section provides practical instructions on setting up and executing simulations using MCTDH-X. Detailed benchmarks against exact solutions are presented, showcasing the accuracy and reliability of the software in ground-state and dynamic simulations. The notes then delve into the dynamics of quantum systems, covering relaxation processes, time evolution, and the analysis of propagation for both bosonic and fermionic particles. The discussion includes the interpretation of various physical quantities such as energy, density distributions, and orbital occupations. Advanced features of MCTDH-X are also explored in the last section, including the calculation of correlation functions and the creation of visualizations through video tutorials. The notes conclude with a Linux/UNIX command cheat sheet, facilitating ease of use for users operating the software on different systems. Overall, these lecture notes provide a valuable resource for researchers and students in the field of quantum dynamics, offering both theoretical insights and practical guidance on the use of MCTDH-X for studying complex many-body systems.
description: Adapted from a series of lectures given during the 2023 MCTDH Summer School in Heidelberg (Germany); 48 pages, 30 figures
Dynamic Mode Decomposition Accelerated Forecast and Optimization of Geological CO2 Storage in Deep Saline Aquifers
Creators: name: Voulanas, Dimitrios
name: Gildin, Eduardo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Data-driven and non-intrusive DMDc and DMDspc models successfully expedite the reconstruction and forecasting of CO2 fluid flow with acceptable accuracy margins, aiding in the rapid optimization of geological CO2 storage forecast and optimization. DMDc and DMDspc models were trained with weekly, monthly, and yearly simulation pressure and CO2 saturation fields using a commercial simulator. The domain of interest is a large-scale, offshore, highly heterogeneous reservoir model with over 100,000 cells. DMD snapshot reconstruction significantly reduced simulation times from several hours to mere minutes. DMDspc reduced the number of DMD modes for pressure without losing accuracy while sometimes even improving accuracy. Two operation cases were considered: 1. CO2 injection, 2. CO2 injection and water production for pressure maintenance. For pressure, DMDspc achieved a slightly higher than DMDc average error by removing several modes. On the other hand, DMDspc showed limited success in reducing modes for CO2 saturation. The forecast performance of DMD models was evaluated using percent change error, mean absolute error and Pearsons R correlation coefficient metrics. Almost all DMD pressure models managed to successfully forecast pressure fields, while a smaller number of DMD models managed to forecast CO2 saturation. While forecast errors have a considerable range, only DMD models with errors below 5% PCE for pressure or 0.01 MAE for saturation were considered acceptable for geological CO2 storage optimization. Optimized CO2 injection and water production amounts were consistent across selected DMD models and all time scales. The DMDspc-monitored cells approach, which only reconstructs the monitored-during-optimization cells, reduced even further optimization time while providing consistent results with the optimization that used full snapshot reconstruction.
Patterns of convection in rotating spherical shells
Creators: name: Simitev, R. D.
name: Busse, F. H.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Patterns of convection in internally heated, self-gravitating rotating spherical fluid shells are investigated through numerical simulations. While turbulent states are of primary interest in planetary and stellar applications the present paper emphasizes more regular dynamical features at Rayleigh numbers not far above threshold which are similar to those which might be observed in laboratory or space experiments. Amplitude vacillations and spatial modulations of convection columns are common features at moderate and large Prandtl numbers. In the low Prandtl number regime equatorially attached convection evolves differently with increasing Rayleigh number and exhibits an early transition into a chaotic state. Relationships of the dynamical features to coherent structures in fully turbulent convection states are emphasized.
Diffuse Neutron Scattering Study of Magnetic Correlations in half-doped La0.5Ca0.5-xSrxMnO3 (x = 0.1, 0.3 and 0.4) Manganites
Creators: name: Dhiman, I.
name: Das, A.
name: Mittal, R.
name: Su, Y.
name: Kumar, A.
name: Radulescu, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The short range ordered magnetic correlations have been studied in half doped La0.5Ca0.5-xSrxMnO3 (x = 0.1, 0.3 and 0.4) compounds by polarized neutron scattering technique. On doping Sr2+ for Ca2+ ion, these compounds with x = 0.1, 0.3, and 0.4 exhibit CE-type, mixture of CE-type and A-type, and A-type antiferromagnetic ordering, respectively. Magnetic diffuse scattering is observed in all the compounds above and below their respective magnetic ordering temperatures and is attributed to magnetic polarons. The correlations are primarily ferromagnetic in nature above T\_N, although a small antiferromagnetic contribution is also evident. Additionally, in samples x = 0.1 and 0.3 with CE-type antiferromagnetic ordering, superlattice diffuse reflections are observed indicating correlations between magnetic polarons. On lowering temperature below T\_N the diffuse scattering corresponding to ferromagnetic correlations is suppressed and the long range ordered antiferromagnetic state is established. However, the short range ordered correlations indicated by enhanced spin flip scattering at low Q coexist with long range ordered state down to 3K. In x = 0.4 sample with A-type antiferromagnetic ordering, superlattice diffuse reflections are absent. Additionally, in comparison to x = 0.1 and 0.3 sample, the enhanced spin flip scattering at low Q is reduced at 310K, and as temperature is reduced below 200K, it becomes negligibly low. The variation of radial correlation function, g(r) with temperature indicates rapid suppression of ferromagnetic correlations at the first nearest neighbor on approaching TN. Sample x = 0.4 exhibits growth of ferromagnetic phase at intermediate temperatures (~ 200K). This has been further explored using SANS and neutron depolarization techniques.
description: 13 pages, 12 figures, To appear in Physical Review B
Additive Manufacturing and Hydrogen: A Groundbreaking Combination for Industrial Gas Burners
Creators: name: Goßrau, Christian
name: Willkomm, Johannes Wilhelm
Publisher: name: RWTH Aachen University
Year: 2023
Subjects: Additive Manufacturing
Hydrogen Burners

description: Formnext 2023, Frankfurt a.M., Germany, 7 Nov 2023 - 10 Nov 2023; 11 Folien (2023).
The Complement of a Closed Set Satisfying the Extended Exterior Sphere Condition
Creators: name: Nour, Chadi
name: Takche, Jean
Publisher: name: arXiv
Year: 2024
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 49J52, 52A20, 93B27

description: We provide a novel analytical proof of an improved version of [10, Theorem 3.1], showing that the complement of a closed set satisfying the extended exterior sphere condition is nothing but the union of closed balls with lower semicontinuous radius function. The improvement lies in the radius function, which is now larger than the one used in [10, Theorem 3.1].
Selection criteria for two-parameter solutions to scalar-tensor gravity
Creators: name: Azreg-Aïnou, Mustapha
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We make a systematic investigation of the generic properties of static, spherically symmetric, asymptotically flat solutions to the field equations describing gravity minimally coupled to a nonlinear self-gravitating real scalar field. Seven corollaries and a theorem on selection criteria for two- and one-parametric solutions are proven and conditions for obtaining particle-like solution, black holes or naked singularities are derived. A series of exact solutions in closed forms describing different black holes, naked singularities and particle-like solutions are provided.
description: 24 pages, 7 figures, 2 tables
Effective Magnetic Switching of THz Signal in Planar Structured Spintronic Emitters
Creators: name: Karashtin, Evgeny A.
name: Gusev, Nikita S.
name: Sapozhnikov, Maksim V.
name: Avdeev, Pavel Yu.
name: Lebedeva, Ekaterina D.
name: Gorbatova, Anastasiya V.
name: Buryakov, Arseniy M.
name: Mishina, Elena D.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate an efficient swithcable spintronic THz emission from a Co(2nm)/Pt(2nm) bilayer split into a grating of micro- or nanostripes in applied external magnetic field of the order of 10mT. The THz signal is effectively emitted if the samples are magnetized perpendicular to the stripes direction and decreases upon a 90-degree rotation of a sample. The maximal 27-fold ratio of amplitude change is achieved for the sample with a $2 μm$ width of stripes. For the samples with easy magnetization axis directed perpendicular to stripes the THz signal is linearly polarized in the direction of the stripes and abruptly switches during the sample re-magnetization process. If the easy axis is along the stripes the THz source is almost switched off in a zero magnetic field.
description: 6 pages, 6 figures
Small-$ε$ behavior of the Non-Hermitian PT-Symmetric Hamiltonian $H=p^2+x^2(ix)^ε$
Creators: name: Bender, Carl M.
name: Besseghir, Karim
name: Jones, Hugh F.
name: Yin, Xinghui
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The energy eigenvalues of the class of non-Hermitian PT-symmetric Hamiltonians $H=p^2+x^2(ix)^ε$ ($ε\geq0$) are real, positive, and discrete. The behavior of these eigenvalues has been studied perturbatively for small $ε$. However, until now no other features of $H$ have been examined perturbatively. In this paper the small-$ε$ expansion of the C operator and the equivalent isospectral Dirac-Hermitian Hamiltonian $h$ are derived.
description: 11 pages, 1 figure
Conjugation of injections by permutations
Creators: name: Mesyan, Zachary
Publisher: name: arXiv
Year: 2010
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M20, 20B30 (primary), 20B07 (secondary)

description: Let X be a countably infinite set, and let f, g, and h be any three injective self-maps of X, each having at least one infinite cycle. (For instance, this holds if f, g, and h are not bijections.) We show that there are permutations a and b of X such that h=afa^{-1}bgb^{-1} if and only if |X\Xf|+|X\Xg|=|X\Xh|. We also prove a version of this statement that holds for infinite sets X that are not necessarily countable. This generalizes results of Droste and Ore about permutations.
description: 27 pages, 4 figures
Controls of sediment burial depth and distribution on a small gravel bed channel
Creators: name: Xing, Tianqi
Publisher: name: University of British Columbia
Year: 2024

description: This study utilizes tracer data spanning a 12-year period from a small gravel-bed stream to investigate sediment burial depth and distribution in relation to key controls, including flow shearing work (expressed as time-integrated excess flow energy expenditure, ΩT), bedload grain size, and channel morphology. Higher ΩT leads to increased vertical mixing, especially among moved tracers, which tend to fit exponential and Gamma distributions, with the distribution shape is influenced by ΩT . Tracers with smaller grain sizes exhibit deeper and more dispersed burial, while coarser materials tend to concentrate near the bed surface. The central tendency of burial depth shows a notable negative correlation with grain size, particularly in larger size classes. Bed morphology doesn’t strongly impact the average burial depth, but it does cause different burial patterns. Deeper sediment burial is found in sidebars and pools, suggesting different levels of vertical mixing. Results of this study allow for the description of the role of flow, bed material grain size, and bed morphology on vertical sediment dispersion in a low sediment transport regime channel. Generalizing these findings requires further analysis in diverse fluvial systems. Any extrapolation requires a careful and justified scaling approach, acknowledging the study’s site-specific nature.
Regular Kerr black holes: Junction conditions and the matter content across the ring
Creators: name: Basso, Marcos L. W.
name: Zanchin, Vilson T.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Regular rotating black holes are usually described by a metric of the Kerr-Schild form with a particular mass function that is chosen to avoid the ring singularity of the Kerr metric and which approaches the Kerr metric at the asymptotic limit. However, as is well known, even for a class of well-behaved mass functions, the curvature scalars present a discontinuity in the equatorial plane at the ring. This discontinuity has been associated with the presence of a string of matter that joins the interior and exterior regions along the equatorial plane. By using the Darmois-Israel junction conditions, we analyze all four possible combinations of the normal vector orientations on each side of the ring, construct the complete stress-energy momentum tensor of the string, and interpret each resulting solution. We show that, out of the four possibilities, only one of the four models for the string solution at the ring yields the appropriate asymptotic geometry. In such a case, the string bears a fluid with nonzero pressure, but with a vanishing line energy density, and it does not rotate at all. Finally, taking an appropriate metric for the exterior region, we also discuss a different scenario in which the matter source at the ring is a rotating lightlike fluid.
Detection of Thermal Emission of XO-2b: Evidence for a Weak Temperature Inversion
Creators: name: Machalek, Pavel
name: McCullough, Peter R.
name: Burrows, Adam
name: Burke, Christopher J.
name: Hora, Joseph L.
name: Johns-Krull, Christopher M.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We estimate flux ratios of the extrasolar planet XO-2b to its host star XO-2 at 3.6, 4.5, 5.8 and 8.0 micron with IRAC on the Spitzer Space Telescope to be 0.00081 +- 0.00017, 0.00098 +- 0.00020, 0.00167 +- 0.00036 and 0.00133 +- 0.00049, respectively. The fluxes provide tentative evidence for a weak temperature inversion in the upper atmosphere, the precise nature of which would need to be confirmed by longer wavelength observations. XO-2b substellar flux of 0.76 x 10^9 ergs cm^-2 s^-1 lies in the predicted transition region between atmospheres with and without upper atmospheric temperature inversion.
description: 17 pages. Accepted for publication in The Astrophysical Journal
Quantum instability for charged scalar particles on charged Nariai and ultracold black hole manifolds
Creators: name: Belgiorno, F.
name: Cacciatori, S. L.
name: Piazza, F. Dalla
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze in detail the quantum instability which characterizes charged scalar field on three special de Sitter charged black hole backgrounds. In particular, we compute exactly the imaginary part of the effective action for scalar charged fields on the ultracold I, ultracold II and Nariai charged black hole backgrounds. Both the transmission coefficient approach and the $ζ$-function approach are exploited. Thermal effects on this quantum instability are also taken into account in presence of a non-zero black hole temperature (ultracold I and Nariai).
description: 20 pages, IOP style
From videos to animatable 3d neural characters
Creators: name: Su, Shih-Yang
Publisher: name: University of British Columbia
Year: 2024

description: Realistic 3D human models have extensive applications across various domains, including entertainment, healthcare, sports, fashion, and more. The challenges in recreating life-like, high-fidelity virtual humans lie in capturing the subtle, nuanced expressions and intricate, complex body dynamics. Consequently, the human digitalization process often requires sophisticated, tailor-made multi-camera capture studios and high-precision motion-tracking systems, limiting accessibility to only a selected few. While recent developments in deep learning have made modeling virtual characters from videos possible, existing approaches still rely on template meshes and 3D surface priors constructed from accurate 3D scans, labels, and multi-view captures. In this dissertation, we take steps in template-free 3D digitalization, enabling 3D animatable human modeling directly from video footage without 3D annotations and surface priors. Our important contributions include: 1) an analysis-by-synthesis framework for jointly learning 3D body shape, appearance, and pose directly from monocular videos; 2) a disentangled body feature representation without pre-defined 3D surfaces for sample-efficient learning and unseen animation generalization; 3) a memory-efficient factorized volume representation for capturing local appearance and geometry structures; 4) a hybrid human body model combining point-based and neural-fields representations for creating 3D avatars with detailed and consistent appearances. In conclusion, we develop approaches that build upon each other to advance the technologies for accessible human digitalization.
Generalized Weyl solutions in d=5 Einstein-Gauss-Bonnet theory: the static black ring
Creators: name: Kleihaus, Burkhard
name: Kunz, Jutta
name: Radu, Eugen
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We argue that the Weyl coordinates and the rod-structure employed to construct static axisymmetric solutions in higher dimensional Einstein gravity can be generalized to the Einstein-Gauss-Bonnet theory. As a concrete application of the general formalism, we present numerical evidence for the existence of static black ring solutions in Einstein-Gauss-Bonnet theory in five spacetime dimensions. They approach asymptotically the Minkowski background and are supported against collapse by a conical singularity in the form of a disk. An interesting feature of these solutions is that the Gauss-Bonnet term reduces the conical excess of the static black rings. Analogous to the Einstein-Gauss-Bonnet black strings, for a given mass the static black rings exist up to a maximal value of the Gauss-Bonnet coupling constant $α'$. Moreover, in the limit of large ring radius, the suitably rescaled black ring maximal value of $α'$ and the black string maximal value of $α'$ agree.
description: 43 pages, 14 figures
Topological susceptibility in the SU(3) random vortex world-surface model
Creators: name: Engelhardt, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: The topological charge is constructed for SU(3) center vortex world-surfaces composed of elementary squares on a hypercubic lattice. In distinction to the SU(2) case investigated previously, it is necessary to devise a proper treatment of the color structure at vortex branchings, which arise in the SU(3) case, but not for SU(2). The construction is used to evaluate the topological susceptibility in the random vortex world-surface model of infrared Yang-Mills dynamics. Results for the topological susceptibility are reported as a function of temperature, including both the confined as well as the deconfined phase.
description: 7 pages, 3 figures; talk presented at the 26th International Symposium on Lattice Field Theory (Lattice 2008), Williamsburg, Virginia, 14-20 Jul 2008
Neutrinos from Supernovae as a Trigger for Gravitational Wave Search
Creators: name: Pagliaroli, G.
name: Vissani, F.
name: Coccia, E.
name: Fulgione, W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Exploiting an improved analysis of the electronic antineutrinos signal from the explosion of a galactic core collapse supernova, we show that it is possible to identify within about ten milliseconds the time of the bounce, which is strongly correlated to the time of the maximum amplitude of the gravitational signal. This allows to precisely identify the gravitational wave burst timing.
description: 4 pages, 2 figures
Deep Gemini/GMOS imaging of an extremely isolated globular cluster in the Local Group
Creators: name: Mackey, A. D.
name: Ferguson, A. M. N.
name: Irwin, M. J.
name: Martin, N. F.
name: Huxor, A. P.
name: Tanvir, N. R.
name: Chapman, S. C.
name: Ibata, R. A.
name: Lewis, G. F.
name: McConnachie, A. W.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on deep imaging of a remote M31 globular cluster, MGC1, obtained with Gemini/GMOS. Our colour-magnitude diagram for this object extends ~5 magnitudes below the tip of the red giant branch and exhibits features consistent with an ancient metal-poor stellar population, including a long, well-populated horizontal branch. The red giant branch locus suggests MGC1 has a metal abundance [M/H] ~ -2.3. We measure the distance to MGC1 and find that it lies ~160 kpc in front of M31 with a distance modulus of 23.95 +/- 0.06. Combined with its large projected separation of 117 kpc from M31 this implies a deprojected radius of Rgc = 200 +/- 20 kpc, rendering it the most isolated known globular cluster in the Local Group by some considerable margin. We construct a radial brightness profile for MGC1 and show that it is both centrally compact and rather luminous, with Mv = -9.2. Remarkably, the cluster profile shows no evidence for a tidal limit and we are able to trace it to a radius of at least 450 pc, and possibly as far as ~900 pc. The profile exhibits a power-law fall-off with exponent -2.5, breaking to -3.5 in its outermost parts. This core-halo structure is broadly consistent with expectations derived from numerical models, and suggests that MGC1 has spent many gigayears in isolation.
description: Accepted for publication in MNRAS
Density wave instability in a 2D dipolar Fermi gas
Creators: name: Yamaguchi, Yasuhiro
name: Sogo, Takaaki
name: Ito, Toru
name: Miyakawa, Takahiko
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We consider a uniform dipolar Fermi gas in two-dimensions (2D) where the dipole moments of fermions are aligned by an orientable external field. We obtain the ground state of the gas in Hartree-Fock approximation and investigate RPA stability against density fluctuations of finite momentum. It is shown that the density wave instability takes place in a broad region where the system is stable against collapse. We also find that the critical temperature can be a significant fraction of Fermi temperature for a realistic system of polar molecules.
description: 10 figures
Additional file 1 of The effect of APN, hs-CRP and APN/hs-CRP in periodontitis with DAA
Creators: name: Cheng, Rui
name: Xu, Xiaojiang
name: Yang, Shurong
name: mi, Zhongqian
name: Zhao, Yong
name: Wang, Chong
name: Shi, Xuexue
name: Gao, Jinhua
name: Yu, Feiyan
name: Ren, Xiuyun
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 1. ARRIVE Guideline.
Near-field optical microscopy with a nanodiamond-based single photon tip
Creators: name: Cuche, A.
name: Drezet, A.
name: Sonnefraud, Y.
name: Faklaris, O.
name: Treussart, F.
name: Roch, J. -F.
name: Huant, S.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We introduce a point-like scanning single-photon source that operates at room temperature and offers an exceptional photostability (no blinking, no bleaching). This is obtained by grafting in a controlled way a diamond nanocrystal (size around 20 nm) with single nitrogen-vacancy color-center occupancy at the apex of an optical probe. As an application, we image metallic nanostructures in the near-field, thereby achieving a near-field scanning single-photon microscopy working at room temperature on the long term. Our work may be of importance to various emerging fields of nanoscience where an accurate positioning of a quantum emitter is required such as for example quantum plasmonics.
description: submitted to Optics Express
A new inverse quasifission mechanism to produce neutron-rich transfermium nuclei
Creators: name: Kedziora, D. J.
name: Simenel, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Based on time-dependent Hartree-Fock theory, a new inverse quasifission mechanism is proposed to produce neutron-rich transfermium nuclei, in collision of prolate deformed actinides. Calculations show that collision of the tip of one nucleus with the side of the other results in a nucleon flux toward the latter. The role of nucleon evaporation and impact parameter, as well as the collision time are discussed.
description: 8 pages, 7 figures
BULUTLI TEXNOLOGIYALARDA TAHDIDLAR VA HIMOYA
Creators: name: Xurramov, Anvar
name: Xushboqova, Oygul
Publisher: name: Zenodo
Year: 2024

description: Ma'lumotlarni bulutda saqlash, ma'lumotlarning tarqalishi, bulutli infratuzilma, ma'lumotlar xavfsizligi, bulutli provayderlar.