cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The effect of magnetic field and disorders on the electronic transport in graphene nanoribbons
Creators: name: Kumar, S. Bala
name: Jalil, M. B. A.
name: Tan, S. G.
name: Liang, Gengchiau
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We developed a unified mesoscopic transport model for graphene nanoribbons, which combines the non-equilibrium Green's function (NEGF) formalism with the real-space π-orbital model. Based on this model, we probe the spatial distributions of electrons under a magnetic field, in order to obtain insights into the various signature Hall effects in disordered armchair graphene nanoribbons (AGNR). In the presence of a uniform perpendicular magnetic field (B\perp-field), a perfect AGNR shows three distinct spatial current profiles at equilibrium, depending on its width. Under non-equilibrium conditions (i.e. in the presence of an applied bias), the net electron flow is restricted to the edges and occurs in opposite directions depending on whether the Fermi level lies within the valence or conduction band. For electrons at energy level below the conduction window, the B\perp-field gives rise to local electron flux circulation, although the global flux is zero. Our study also reveals the suppression of electron backscattering as a result of the edge transport which is induced by the B\perp-field. This phenomenon can potentially mitigate the undesired effects of disorders, such as the bulk and edge vacancies, on the transport properties of AGNR. Lastly, we show that the effect of B\perp-field on electronic transport is less significant in the multimode compared to the single mode electron transport.
description: 21 pages, 4 figures
Quantum counter for far-infrared radiation
Creators: name: Lengfellner, Hans
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1977
Subjects: subject: 530 Physik

description: Two types of three-level quantum counters, based on the Bloembergen and the inverted scheme, are discussed with respect to their application for up-conversion of far-infrared (FIR) radiation to visible light. It is reported on a tunable quantum counter of the inverted type: in optically pumped ruby, photons at 29 cm-1are absorbed by the transitionbar{E}(2E) →2bar{A}(2E) and lead to an increased R2- fluorescence radiation. By Zeeman splitting of the2Elevels, tuning of the detected frequency from 29 cm-1to higher and lower frequencies is possible (with 1 cm-1/Tesla). Using the 891-GHz radiation of an HCN laser we determine for the quantum counter a power conversion efficiency of the order of 10-6and a frequency bandwidth of 360 MHz. We find the interesting result that phonon bottleneck due to resonant trapping of 29 cm-1phonons can lead to an increase of the quantum efficiency by orders of magnitude.
Anharmonic Decay of Zone-Boundary Phonons Observed by a New Method of Phonon Detection
Creators: name: Lengfellner, Hans
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1981
Subjects: subject: 530 Physik
subject: 66.70.+f
subject: 78.30.-j

description: A new method for detection of zone-boundary phonons is presented. Phonons generated by nonradiative transitions in thallium halide crystals are detected by phonon difference absorption with use of time-resolved far-infrared laser spectroscopy. Our experiments, performed at crystal temperatures between 3 and 20 K, give experimental evidence of strongly-temperature-dependent anharmonic lifetimes of transverse-acoustic zone-boundary phonons.
Resonance trapping of monochromatically generated 29 CM-1 phonons in strongly excited ruby crystals
Creators: name: Retzer, N.
name: Lengfellner, Hans
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik

description: We report on a study of the resonance trapping of monochromatically generated 29 cm-1 phonons in strongly excited ruby crystals. By use of a pulsed far infrared laser we generated, in homogeneously excited crystals, monochromatic phonon pulses and studied the trapping and decay of these phonons. We found that the trapping time increased with the square root of the concentration of excited Cr3+ ions and that it depended on the crystal dimension. We show, furthermore, that the trapping time depends on crystal quality and that it can be strongly influenced by inhomogeneous stress and by X-ray irradiation. We used a model of spectral-spatial phonon diffusion for a description of the experimental results.
Far-infrared laser spectroscopy of phonon difference band absorption in TlCl
Creators: name: Lengfellner, Hans
name: Rindt, R.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1980
Subjects: subject: 530 Physik

description: Far-infrared laser radiation is used to study the lattice absorption of a TlCl crystal over a large temperature range. We found a strong absorption band caused by phonon difference processes where longitudinal and transverse acoustic phonons with wave vectors at the Brillouin zone boundary are involved.
Far infrared reflectivity of Tl2Ba2CaCu2O8 and YBa2Cu3O7 ceramics and of an oriented YBa2Cu3O7 thin film
Creators: name: Renk, Karl Friedrich
name: Ose, W.
name: Zetterer, T.
name: Schützmann, J.
name: Lengfellner, Hans
name: Otto, H. H.
name: Keller, J.
name: Roas, B.
name: Schultz, L.
name: Saemann-Ischenko, G.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik

description: We report on measurements of far infrared (IR) reflection spectra of Tl2Ba2CaCu2O8 and YBa2Cu3O7 ceramics that are composed of strongly anisotropic crystallites and we present a new method for analyzing reflection spectra of metal-ceramics. In the analysis we take into account that the crystallites have conducting connections. The analysis allows the description of experimental reflection spectra by using Drude's theory of conductivity and introducing appropriate phonon resonances. In a second part we describe results of reflection measurements for an oriented YBa2Cu3O7 thin film. We find that the reflectivity above Tc can be described by a Drude-dynamical conductivity for small frequencies (< 600 cm−1) while a strong deviation from a Drude behavior is found for large frequencies. A reflectivity enhancement below Tc gives evidence for a Mattis-Bardeen like conductivity with an energy gap.
Use of high Tc superconductors for far‐infrared Fabry–Perot resonators
Creators: name: Renk, Karl Friedrich
name: Betz, J.
name: Schützmann, J.
name: Prückl, A.
name: Brunner, B.
name: Lengfellner, Hans
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: HIGH−TC SUPERCONDUCTORS, FABRY−PEROT INTERFEROMETER, RESONATORS, FABRICATION, SUPERCONDUCTING FILMS, REFLECTIVE COATINGS, REFLECTIVITY, YTTRIUM OXIDES, BARIUM OXIDES, TRANSITION TEMPERATURE
subject: 530 Physik
subject: 07.60.-j
subject: 42.79.-e
subject: 74.78.-w
subject: 74.70.-b
subject: 78.66.-w

description: In this letter we report on the application of high Tc superconductors for fabrication of far‐infrared Fabry–Perot resonators. Thin films of YBa2Cu3O7−δ deposited on MgO substrates by the laser ablation technique were used as reflectors. Two films on two different MgO plates were arranged parallel at a distance determining the lowest order resonance. We demonstrate operation of a resonator in a frequency range (up to about 300 cm−1) in which MgO is transparent at low temperature.
Ultrasonic modulation of persistent spectral holes in crystals
Creators: name: Lengfellner, Hans
name: Gosnell, T. R.
name: Tkach, R. W.
name: Sievers, A. J.
Publisher: name: Universität Regensburg
Year: 1983
Subjects: subject: 530 Physik

description: Persistent IR spectral holes in KI@B:ReO−4 and in RbI@B:ReO−4 crystals have been both modulated and erased with 10‐MHz ultrasound. This mechanical modulation of the hole depth leads to a new phase‐insensitive optical detector for ultrasonic waves in solids.
Towards automated dynamic scene analysis and augmentation during image-guided radiological and surgical interventions
Creators: name: Amir-Khalili, Alborz
Publisher: name: University of British Columbia
Year: 2017

description: This thesis proposes non-invasive automated scene analysis and augmentation techniques to improve navigation in image-guided therapy (IGT) applications. IGT refers to procedures in which physicians rely on medical images to plan, perform, and monitor an intervention. In IGT, the tomographic images acquired before the intervention may not directly correspond to what the physician sees via the intraoperative imaging. This is due to many factors such as: time-varying changes in the patient's anatomy (e.g., patient positioning or changes in pathology), risk of overexposure to ionizing radiation (restricted use of X-ray imaging), operational costs, and differences in imaging modalities. This inconsistency often results in a navigational problem that demands substantial additional effort from the physician to piece together a mental representation of complex correspondences between the preoperative images and the intraoperative scene. The first direction explored in this thesis, investigates the application of image-based motion analysis techniques for vessel segmentation. Specifically, we propose novel motion-based segmentation methods to enable safe, fast, and automatic localization of vascular structures from dynamic medical image sequences and demonstrated their efficacy in segmenting vasculature from surgical video and dynamic medical ultrasound sequences. The second direction investigates ways in which navigation uncertainties can be computed, propagated, and visualized in the context of IGT navigation systems that target deformable soft-tissues. Specifically, we present an uncertainty-encoded scene augmentation method for robot-assisted laparoscopic surgery, in which we propose visualization techniques for presenting probabilistic tumor margins. We further present a computationally efficient framework to estimate the uncertainty in deformable image registration and to subsequently propagate the effects of the computed uncertainties through to the visualizations, organ segmentations, and dosimetric evaluations performed in the context of fractionated image-guided brachytherapy. Our contributions constitute a step towards automated and real-time IGT navigation and may, in the near future, help to improve interventional outcomes for patients (improved targeting of pathologies) and increase surgical efficiency (less effort required by the physician).
Additional file 1 of Functional outcomes before and after implant removal in patients with posttraumatic shoulder stiffness and healed proximal humerus fractures: does implant material (PEEK vs. titanium) have an impact? – a pilot study
Creators: name: Fleischhacker, E.
name: Sprecher, C. M.
name: Milz, S.
name: Saller, M. M.
name: Gleich, J.
name: Siebenbürger, G.
name: Helfen, T.
name: Böcker, W.
name: Ockert, B.
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer

description: Additional file 1.
Additional file 1 of Uncovering the first complete plastome genomics, comparative analyses, and phylogenetic dispositions of endemic medicinal plant Ziziphus hajarensis (Rhamnaceae)
Creators: name: Asaf, Sajjad
name: Ahmad, Waqar
name: Al-Harrasi, Ahmed
name: Khan, Abdul Latif
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Figure S1. Analysis of the simple sequence repeats (SSRs) in the chloroplast genome of Z. hajarensis and compared cp genomes of related species. (A) Frequency of SSRs in coding and intergenic regions (B) Frequency of SSRs in inverted repeats (IR) small single copy (SSC) and large single copy (LSC) regions. Figure S2. Phylogenetic trees were constructed for 36 species from seven families representing 15 genera using different methods and the tree is shown for 66 protein coding shared genes (A) and matK (B) data sets. These sequences data sets were used with four different methods: Bayesian inference (BI), maximum parsimony (MP), neighbour joining (NJ) and maximum likelihood (ML). The branches above represent bootstrap values in the ML, NJ and MP, and posterior probabilities in the BI trees. Table S1. Gene composition in Z. hajarensis chloroplast genome.
Kinetic models with randomly perturbed binary collisions
Creators: name: Bassetti, Federico
name: Ladelli, Lucia
name: Toscani, Giuseppe
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82C40, 60F05

description: We introduce a class of Kac-like kinetic equations on the real line, with general random collisional rules, which include as particular cases models for wealth redistribution in an agent-based market or models for granular gases with a background heat bath. Conditions on these collisional rules which guarantee both the existence and uniqueness of equilibrium profiles and their main properties are found. We show that the characterization of these stationary solutions is of independent interest, since the same profiles are shown to be solutions of different evolution problems, both in the econophysics context and in the kinetic theory of rarefied gases.
Tunable Quantum Counter For Far-Infrared Radiation
Creators: name: Lengfellner, Hans
name: Pauli, G.
name: Heisel, W.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1976
Subjects: subject: 530 Physik
subject: 85.60.Gz

description: We report on a quantum counter which converts far‐infrared radiation to visible light. The 891‐Ghz radiation of an HCN laser, absorbed in optically pumped ruby by the transition Ē (2E) →2Ā (2E), was detected by an increased R2 fluorescence. By Zeeman splitting of the 2E levels the narrow‐band detector was tuned to the laser line.
Superconducting Tl-Ca-Ba-Cu-O thin films prepared by diffusion of Tl into an excimer laser ablated Ca2Ba2Cu3Ox film
Creators: name: Betz, J.
name: Lengfellner, Hans
name: Duschl, E.
name: Meidenbauer, K.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik

description: In this paper we present a description of the Nernst electric field E generated by forced flux tube motion due to a temperature gradient backward differenceT. Depending on the value of backward differenceT with respect to a critical gradient backward differenceTcrit, we find for backward differenceT/backward differenceTcritmuch less-than 1 a regime E ∝ backward differenceT, in close analogy to the regime of thermally activated flux flow in transport current measurements (characterized by an electric field proportional to the transport current). The theory for backward differenceT
Preparation, characterization, and far-infrared study of ceramic high-Tc superconductors
Creators: name: Zetterer, T.
name: Ose, W.
name: Schützmann, J.
name: Otto, H. H.
name: Obermayer, P. E.
name: Tasler, N.
name: Lengfellner, Hans
name: Lugert, G.
name: Keller, J.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 530 Physik

description: We report on a study of single-phase (superconducting) YBa2Cu3O7 and (nonconducting) Y2BaCuO5 and mixed phases of these compounds in bulk and film samples and on an investigation of ceramic bulk material of the homologous series Tl2Ba2CanCun+1O2n+6. We describe preparation and structural characterization by x-ray diffraction analyses and further characterization by electric, magnetic, tunnel junction, and Raman scattering studies, and we present results of far-infrared reflectivity measurements. In a theoretical analysis we relate the phonon structure of reflectivity spectra to geometric structure of a metallic network, with holes filled with nonconducting material. The influence of superconductivity on reflectivity is also investigated.
Phase Fluctuations near the Chiral Critical Point
Creators: name: Kapusta, Joseph
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Helmholtz free energy density is parametrized as a function of temperature and baryon density near the chiral critical point of QCD. The parametrization incorporates the expected critical exponents and amplitudes. An expansion away from equilibrium states is achieved with Landau theory. This is used to calculate the probability that the system is found at a density other than the equilibrium one. Such fluctuations are predicted to be very large in heavy ion collisions.
description: 7 pages, 8 figures, Winter Workshop on Nuclear Dynamics 2010
Studies of TMDs at COMPASS
Creators: name: Wollny, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Transverse spin and transverse momentum distribution functions of the constituents of the nucleon are a crucial input for a complete description of the nucleon. COMPASS measured such for longitudinally and transversely polarized deuterons and protons. In the following we will focus on recent results from the 2007 transverse proton data and on the results for unpolarized deuterons.
description: To appear in the proceedings of 4th Workshop on Exclusive Reactions at High Momentum Transfer, Thomas Jefferson National Accelerator Facility, Newport News, Virginia USA, May 18-21, 2010
Propagators in lattice Coulomb gauge and confinement mechanisms
Creators: name: Burgio, G.
name: Quandt, M.
name: Schröck, M.
name: Reinhardt, H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We discuss the gluon propagator in 3- and 4-dimensional Yang-Mills theories in Coulomb gauge and compare it with the corresponding Landau gauge propagator, showing that for both the relevant IR mass scale coincides. We also report preliminary results on Coulomb gauge ghost form factor and quark propagators and give a comment on the gluon propagator's strong coupling limit.
description: 7 pages, 6 Figure. Talk given at Lattice 2010. Typos corrected
Higher order finite difference schemes for the magnetic induction equations
Creators: name: Koley, Ujjwal
name: Mishra, Siddhartha
name: Risebro, Nils Henrik
name: Svärd, Magnus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We describe high order accurate and stable finite difference schemes for the initial-boundary value problem associated with the magnetic induction equations. These equations model the evolution of a magnetic field due to a given velocity field. The finite difference schemes are based on Summation by Parts (SBP) operators for spatial derivatives and a Simultaneous Approximation Term (SAT) technique for imposing boundary conditions. We present various numerical experiments that demonstrate both the stability as well as high order of accuracy of the schemes.
description: 20 pages
The extraordinary radio galaxy MRC B1221-423: probing deeper at radio and optical wavelengths
Creators: name: Johnston, Helen M.
name: Broderick, Jess W.
name: Cotter, Garret
name: Morganti, Raffaella
name: Hunstead, Richard W.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present optical spectra and high-resolution multi-wavelength radio observations of the compact steep-spectrum radio source MRC B1221-423 (z=0.1706). MRC B1221-423 is a very young (~10^5 yr), powerful radio source which is undergoing a tidal interaction with a companion galaxy. We find strong evidence of interaction between the AGN and its environment. The radio morphology is highly distorted, showing a dramatic interaction between the radio jet and the host galaxy, with the jet being turned almost back on itself. H I observations show strong absorption against the nucleus at an infall velocity of ~250 km/s compared to the stellar velocity, as well as a second, broader component which may represent gas falling into the nucleus. Optical spectra show that star formation is taking place across the whole system. Broad optical emission lines in the nucleus show evidence of outflow. Our observations confirm that MRC B1221-423 is a young radio source in a gas-rich nuclear environment, and that there was a time delay of a few x 100 Myr between the onset of star formation and the triggering of the AGN.
description: 15 pages, 13 figures, to appear in MNRAS
Generation of tunable pulsed microwave radiation by nonlinear interaction of Nd-YAG laser radiation in GaP crystals
Creators: name: Lengfellner, Hans
Publisher: name: Universität Regensburg
Year: 1987
Subjects: subject: 530 Physik

description: Pulsed microwave radiation in a tuning range from 10 to 30 GHz has been generated through the parametric interaction of two near-infrared pulses in GaP crystals at low temperatures. The power of the microwave pulses (duration 30 nsec) was of the order of 1 mW. The pump pulses were generated with a Nd:YAG laser emitting simultaneously at two frequencies, within the bandwidth of the 1.064-µm transition, as a result of an étalon output coupler.
Far-infrared reflectivity and dynamical conductivity of YBa2Cu3O7
Creators: name: Ose, W.
name: Obermayer, P. E.
name: Otto, H. H.
name: Zetterer, T.
name: Lengfellner, Hans
name: Tasler, N.
name: Keller, J.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 530 Physik

description: For a sintered YBa2Cu3O7 sample that shows high far-infrared reflectivity we determined, by a Kramers-Kronig analysis, the dynamical conductivity and extracted contributions by free charge carriers and phonons. The low temperature conductivity, and also results of a tunnel experiment, can be described by a distribution of energy gaps around 2Δ/kTc reverse similar, equals 4.6. Furthermore we present evidence for superconducting fluctuations and we show that the lowest-frequency infrared-active phonon mode is less damped in the superconducting state than in the normal state.
Concentration dependence of the Ebar-]2abar far-infrared transition of excited chromium ions in ruby
Creators: name: Lengfellner, Hans
name: Werling, U.
name: Hummel, J.
name: Netter, H.
name: Retzer, N.
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1981
Subjects: subject: 530 Physik

description: The absorption due to electronic transitions between the excited Image (2E) state and the 2Image (2E) state of Cr3+ ions in optically pumped ruby is studied by Zeeman spectroscopy with a far-infrared laser. We find that the linewidth and the oscillator strength of the Image → 2Image transition increase quadratically with the chromium concentration for ruby crystals containing more than 0.1 wt.% Cr2O3.
Preserving HTTP Sessions in Vehicular Environments
Creators: name: Ling, Yibei
name: Chen, Wai
name: Hsing, Russell
name: Altintas, Onur
Publisher: name: arXiv
Year: 2010
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Wireless Internet in the in-vehicle environment is an evolving reality that reflects the gradual maturity of wireless technologies. Its complexity is reflected in the diversity of wireless technologies and dynamically changing network environments. The ability to adapt to the dynamics of such environments and to survive transient failures due to network handoffs are fundamentally important in failure-prone vehicular environments. In this paper we identify several new issues arising from network heterogeneity in vehicular environments and concentrate on designing and implementing a network-aware prototype system that supports HTTP session continuity in the presence of network volatility, with the emphasis on the following specifically tailored features: (1) automatic and transparent HTTP failure recovery, (2) network awareness and adaptation, (3) application-layer preemptive network handoff. Experimental results gathered from real application environments based on CDMA {\it 1xRTT} and IEEE 802 networks are presented and analyzed.
Preparation of Y-Ba-Cu-O thin films by laser evaporation with near-infrared radiation
Creators: name: Lengfellner, Hans
name: Renk, Karl Friedrich
name: Fickenscher, P.
name: Schindler, W.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: Superconductivity; Condensed matter: structural, mechanical & thermal
subject: 530 Physik
subject: 74.72.Bk
subject: 81.40.Gh
subject: 74.70.Ad
subject: 74.78.Bz

description: The authors report preparation of Y-Ba-Cu-O thin films by laser evaporation with near-infrared radiation. Pulsed radiation of a Nd-YAG laser (wavelength 1.06 mu m) was used for evaporation of material from the surface of a YBa2Cu3O7 ceramic sample. Thin films, deposited on Al2O3 single-crystal substrates, became conductive after a heat treatment in oxygen atmosphere. One of their films, with a room-temperature resistivity of 1 m Omega cm, showed onset of superconductivity at 100 K and had Tc values of 94-76 K (90%-10%) for the resistive transition. The films were characterised by RBS analysis, SEM and X-ray diffraction.
Thermoelectric Effect in Normal-State YBa2Cu3O7-δ Films (Addendum)
Creators: name: Lengfellner, Hans
name: Zeuner, S.
name: Prettl, Wilhelm
name: Renk, Karl Friedrich
Publisher: name: Universität Regensburg
Year: 1994
Subjects: subject: Superconductivity; Electronics and devices
subject: 530 Physik
subject: 74.78.-w Superconducting films and low-dimensional structures
subject: 84.60.Ve Energy storage systems, including capacitor banks

description: = Addendum to Europhys. Lett. 25 (5) 375-378 (1994)
New ways to access the transverse spin content of the nucleon
Creators: name: Beiyad, M. El
name: Pire, B.
name: Szymanowski, L.
name: Wallon, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We first describe a new way to access the chiral odd transversity parton distribution in the proton through the photoproduction of lepton pairs. The basic ingredient is the interference of the usual Bethe-Heitler or Drell-Yan amplitudes with the amplitude of a process, where the photon couples to quarks through its chiral-odd distribution amplitude, which is normalized to the magnetic susceptibility of the QCD vacuum. We also show how the chiral-odd transversity generalized parton distributions (GPDs) of the nucleon can be accessed experimentally through the exclusive electro - or photoproduction process of a meson pair with a large invariant mass and when the final nucleon has a small transverse momentum. We calculate perturbatively the scattering amplitude at leading order, both in the high energy domain which may be accessed in electron-ion colliders and in the medium energy range. Estimated rates are encouraging.
description: 6 pages, Proceedings of Spin 2010, 19th International Spin Physics Symposium September 27 - October 2, 2010, J\"ulich, Germany
Inverse scattering of 2d photonic structures by layer-stripping
Creators: name: Andresen, Marte P. Hatlo
name: Krogstad, Harald E.
name: Skaar, Johannes
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Design and reconstruction of 2d and 3d photonic structures are usually carried out by forward simulations combined with optimization or intuition. Reconstruction by means of layer-stripping has been applied in seismic processing as well as in design and characterization of 1d photonic structures such as fiber Bragg gratings. Layer-stripping is based on causality, where the earliest scattered light is used to recover the structure layer-by-layer. Our set-up is a 2d layered nonmagnetic structure probed by plane polarized harmonic waves entering normal to the layers. It is assumed that the dielectric permittivity in each layer only varies orthogonal to the polarization. Based on obtained reflectance data covering a suitable frequency interval, time-localized pulse data are synthesized and applied to reconstruct the refractive index profile in the leftmost layer by identifying the local, time-domain Fresnel reflection at each point. Once the first layer is known, its impact on the reflectance data is stripped off, and the procedure repeated for the next layer. Through numerical simulations it will be demonstrated that it is possible to reconstruct structures consisting of several layers. The impact of evanescent modes and limited bandwidth is discussed.
Additional file 1 of Training types associated with knowledge and experience in public health workers
Creators: name: Narita, Zui
name: Yamanouchi, Yoshio
name: Mishima, Kazuo
name: Kamio, Yoko
name: Ayabe, Naoko
name: Kakei, Ryoko
name: Kim, Yoshiharu
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 1.
Additional file 1 of A CRISPR toolbox for generating intersectional genetic mouse models for functional, molecular, and anatomical circuit mapping
Creators: name: Lusk, Savannah J.
name: McKinney, Andrew
name: Hunt, Patrick J.
name: Fahey, Paul G.
name: Patel, Jay
name: Chang, Andersen
name: Sun, Jenny J.
name: Martinez, Vena K.
name: Zhu, Ping Jun
name: Egbert, Jeremy R.
name: Allen, Genevera
name: Jiang, Xiaolong
name: Arenkiel, Benjamin R.
name: Tolias, Andreas S.
name: Costa-Mattioli, Mauro
name: Ray, Russell S.
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 1: Figure S1. Genetic schema for animals used to gather data for Figures 3 and 4. Vector diagrams for the transgenes present in mice used for anatomical fluorescence experiments in Figures 3 and 4. Demonstration of source of recombinase for animals from each panel in the figures.
Spin Evolution of Accreting Young Stars. I. Effect of Magnetic Star-Disk Coupling
Creators: name: Matt, Sean P.
name: Pinzon, Giovanni
name: de la Reza, Ramiro
name: Greene, Thomas P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a model for the rotational evolution of a young, solar mass star interacting with an accretion disk. The model incorporates a description of the angular momentum transfer between the star and disk due to a magnetic connection, and includes changes in the star's mass and radius and a decreasing accretion rate. The model also includes, for the first time in a spin evolution model, the opening of the stellar magnetic field lines, as expected to arise from twisting via star-disk differential rotation. In order to isolate the effect that this has on the star-disk interaction torques, we neglect the influence of torques that may arise from open field regions connected to the star or disk. For a range of magnetic field strengths, accretion rates, and initial spin rates, we compute the stellar spin rates of pre-main-sequence stars as they evolve on the Hayashi track to an age of 3~Myr. How much the field opening affects the spin depends on the strength of the coupling of the magnetic field to the disk. For the relatively strong coupling (i.e., high magnetic Reynolds number) expected in real systems, all models predict spin periods of less than $\sim3$ days, in the age range of 1--3~Myr. Furthermore, these systems typically do not reach an equilibrium spin rate within 3~Myr, so that the spin at any given time depends upon the choice of initial spin rate. This corroborates earlier suggestions that, in order to explain the full range of observed rotation periods of approximately $1$--$10$ days, additional processes, such as the angular momentum loss from powerful stellar winds, are necessary.
On negative higher-order Kerr effect and filamentation
Creators: name: Loriot, V.
name: Béjot, P.
name: Ettoumi, W.
name: Petit, Y.
name: Kasparian, J.
name: ~Henin, S.
name: Hertz, E.
name: Lavorel, B.
name: Faucher, O.
name: ~Wolf, J. -P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: As a contribution to the ongoing controversy about the role of higher-order Kerr effect (HOKE) in laser filamentation, we first provide thorough details about the protocol that has been employed to infer the HOKE indices from the experiment. Next, we discuss potential sources of artifact in the experimental measurements of these terms and show that neither the value of the observed birefringence, nor its inversion, nor the intensity at which it is observed, appear to be flawed. Furthermore, we argue that, independently on our values, the principle of including HOKE is straightforward. Due to the different temporal and spectral dynamics, the respective efficiency of defocusing by the plasma and by the HOKE is expected to depend substantially on both incident wavelength and pulse duration. The discussion should therefore focus on defining the conditions where each filamentation regime dominates.
description: 22 pages, 11 figures. Submitted to Laser physics as proceedings of the Laser Physics 2010 conference
Immune cell phenotype and function : impact of type 2 diabetes, obesity, and exercise
Creators: name: Barry, Julianne Cecile
Publisher: name: University of British Columbia
Year: 2018

description: Chronic low-grade inflammation plays a key role in obesity and type 2 diabetes (T2D). Research on inflammation in obesity and T2D has tended to focus on inhibiting pro-inflammatory signaling with the function of anti-inflammatory cytokines being largely unexplored. Exercise is a cornerstone in the treatment of obesity and T2D and may confer some of its beneficial effects through anti-inflammatory mechanisms; however, the optimal anti-inflammatory exercise modality remains unclear. High-intensity interval training (HIIT) has become popular as a time efficient alternative to moderate intensity continuous training (MICT) but whether HIIT is anti-inflammatory like MICT, or pro-inflammatory, is unclear. This thesis examined the impact of T2D, obesity, and exercise on immune cell phenotype and function. In the first study, it was found that interleukin (IL) 10 was less effective at inhibiting inflammation in immune cells from individuals with T2D, indicating that “IL10 resistance” may impact chronic inflammation in T2D. The impact of exercise on immune cell phenotype and function were then examined in inactive adults with obesity who were randomized to short-term HIIT or MICT. HIIT and MICT reduced the ability of IL10 to inhibit inflammation in blood leukocytes, with a greater effect seen after HIIT. There were differential effects of HIIT and MICT on the anti-inflammatory functioning of IL6. During obesity and T2D, there is increased leukocyte migration/infiltration into adipose through a process mediated by chemokines and their respective chemokine receptors. HIIT and MICT resulted in differential effects on leukocyte chemokine receptors. MICT downregulated monocyte chemokine receptors, CCR2 and CXCR2, whereas HIIT upregulated monocyte, neutrophil and T cell chemokine receptor, CCR5. Exercise-induced changes in IL10 function and leukocyte chemokine receptors occurred in the absence of weight/fat loss, suggesting that these were direct immunomodulatory effects of exercise. All effects of exercise on immune cell phenotype and function occurred without changes in plasma cytokines or chemokines. As levels of circulating cytokines/chemokines are often used to determine whether a treatment is pro- or anti-inflammatory the collective findings of these studies indicate that important immunomodulatory impacts of T2D and different types of exercise could be missed unless immune cell phenotype and function are also assessed.
Untargeted Metabolomics-Based Network Pharmacology Reveals Fermented Brown Rice Toward Anti-obesity Efficacy
Creators: name: Barathikannan, Kaliyan
name: Chelliah, Ramachandran
name: Vinothkanna, Annadurai
name: Prathiviraj, Ragothaman
name: TYAGI, AKANKSHA
name: Selvakumar, Vijayalakshmi
name: Lim, Min-Jin
name: Jia, Ai-Qun
name: Oh, Deog Hwan
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 300602
subject: Food chemistry and food sensory science
classificationCode: 300603
subject: Food nutritional balance
classificationCode: 310602
subject: Bioprocessing, bioproduction and bioproducts

description: The enhanced anti-obesity properties of FBR-1741 suggest its implementation in obesity-functional food.
High power non-linear magnetophotoconductivity in n-GaAs using the UCSB free electron laser
Creators: name: Kaminski, J. P.
name: Spector, J.
name: Prettl, Wilhelm
name: Weispfenning, M.
Publisher: name: Universität Regensburg
Year: 1988
Subjects: subject: 530 Physik

description: The kinetics of electrons bound to shallow donor impurities in n-GaAs was investigated by saturation spectroscopy using the University of California at Santa Barbara free electron laser. The resonant photothermal conductivity from 1s–2p+ transitions was measured at intensities greatly exceeding previous studies. Saturation of bound-to-free photoionization transitions was measured from 0 to 4 Tesla. The 1s–2p+ resonant photoconductive signal shows a distinct intensity dependence caused by the competing bound-to-free transitions which saturate differently. Evaluation of the electron recombination kinetics allows us to calculate the transition time of electrons from the 2p+ level to the ground state, the recombination time of free electrons, and the thermal ionization probability of the 2p+ state.
wakká:raien – i have a story : mixed-blood Indigenous women, identity, and urban spaces
Creators: name: Schuitemaker, Nahannee-Fé Rita
Publisher: name: University of British Columbia
Year: 2017

description: This study explores the stories of three mixed-blood Indigenous women in relation to how they navigate their identity and connection to land in urban spaces. The women are between the ages of 19 and 30 and live on the traditional and ancestral territories of the Coast Salish people, also known as Vancouver, Canada. The women engage with Photovoice, a grassroots methodology that employs photography and storytelling, to share aspects of their life and their experiences as mixed-blood Indigenous women. Through this research study, I aim to create an opportunity for the women to share and to be heard. Through their personal narratives, I will help shed light on the realities of female Indigenous identities with the intention of disrupting whitestream discourses and perceptions of indigeneity within urban settings. I employ an epistemology entitled “Three Directions”, as well as draw on Indigenous Feminism with the aim of honouring the women’s voices. The sharing that transpired within this research speaks to the ongoing struggle for mixed-blood Indigenous women to fully embrace their roots due to the impacts of colonization and assimilationist policies, but it also speaks to their own resiliency in finding supports within the urban community and in drawing strength from the land.
An Optimal Trade-off between Content Freshness and Refresh Cost
Creators: name: Ling, Yibei
name: Mi, Jie
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Caching is an effective mechanism for reducing bandwidth usage and alleviating server load. However, the use of caching entails a compromise between content freshness and refresh cost. An excessive refresh allows a high degree of content freshness at a greater cost of system resource. Conversely, a deficient refresh inhibits content freshness but saves the cost of resource usages. To address the freshness-cost problem, we formulate the refresh scheduling problem with a generic cost model and use this cost model to determine an optimal refresh frequency that gives the best tradeoff between refresh cost and content freshness. We prove the existence and uniqueness of an optimal refresh frequency under the assumptions that the arrival of content update is Poisson and the age-related cost monotonically increases with decreasing freshness. In addition, we provide an analytic comparison of system performance under fixed refresh scheduling and random refresh scheduling, showing that with the same average refresh frequency two refresh schedulings are mathematically equivalent in terms of the long-run average cost.
High magnetic fields thermodynamics of heavy fermion metal YbRh2Si2
Creators: name: Shaginyan, V. R.
name: Popov, K. G.
name: Stephanovich, V. A.
name: Fomichev, V. I.
name: Kirichenko, E. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We perform comprehensive theoretical analysis of high magnetic field behavior of the heavy-fermion (HF) compound YbRh2Si2. At low magnetic fields B, YbRh2Si2 has a quantum critical point related to the suppression of antiferromagnetic ordering at a critical magnetic field. Our calculations of the thermodynamic properties of YbRh2Si2 in wide magnetic field range allow us to straddle a possible metamagnetic transition region and probe the properties of both low-field HF liquid and high-field fully polarized one. Namely, high magnetic fields B\sim B^*\sim 10 T fully polarize corresponding quasiparticle band generating Landau Fermi liquid (LFL) state and suppressing HF (actually NFL) one, while at elevating temperatures both HF state and corresponding NFL properties are restored. Our calculations are in good agreement with experimental facts and show that the fermion condensation quantum phase transition is indeed responsible for the observed NFL behavior and quasiparticles survive both high temperatures and high magnetic fields.
description: 6 pages, 7 figures
Noncommutative complex geometry of the quantum projective space
Creators: name: Khalkhali, Masoud
name: Moatadelro, Ali
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We define holomorphic structures on canonical line bundles of the quantum projective space $\qp^{\ell}_q$ and identify their space of holomorphic sections. This determines the quantum homogeneous coordinate ring of the quantum projective space. We show that the fundamental class of $\qp^{\ell}_q$ is naturally presented by a twisted positive Hochschild cocycle. Finally, we verify the main statements of Riemann-Roch formula and Serre duality for $\qp^{1}_q$ and $\qp^{2}_q$.
Unidirectional hopping transport of interacting particles on a finite chain
Creators: name: Einax, Mario
name: Solomon, Gemma
name: Dieterich, Wolfgang
name: Nitzan, Abraham
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Particle transport through an open, discrete 1-D channel against a mechanical or chemical bias is analyzed within a master equation approach. The channel, externally driven by time dependent site energies, allows multiple occupation due to the coupling to reservoirs. Performance criteria and optimization of active transport in a two-site channel are discussed as a function of reservoir chemical potentials, the load potential, interparticle interaction strength, driving mode and driving period. Our results, derived from exact rate equations, are used in addition to test a previously developed time-dependent density functional theory, suggesting a wider applicability of that method in investigations of many particle systems far from equilibrium.
description: 33 pages, 8 figures
Additional file 2 of A CRISPR toolbox for generating intersectional genetic mouse models for functional, molecular, and anatomical circuit mapping
Creators: name: Lusk, Savannah J.
name: McKinney, Andrew
name: Hunt, Patrick J.
name: Fahey, Paul G.
name: Patel, Jay
name: Chang, Andersen
name: Sun, Jenny J.
name: Martinez, Vena K.
name: Zhu, Ping Jun
name: Egbert, Jeremy R.
name: Allen, Genevera
name: Jiang, Xiaolong
name: Arenkiel, Benjamin R.
name: Tolias, Andreas S.
name: Costa-Mattioli, Mauro
name: Ray, Russell S.
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 2: Figure S2. Breeding schema for animals used in Figures 7-9. Vector diagrams for animals used in e-physiology and whole animal physiology studies in Figures 7-9. Breeding paradigms indicated with arrows show recombinase and effector molecule source during derivation of used lines.
BUYRUQ NUTQIY AKTINING TURLI SOHALARDAGI O'ZIGA XOS HUSUSIYATLARI
Creators: name: Nasridinov, Muxridin
Publisher: name: Zenodo
Year: 2023

description: Bu tezisda nutqiy akt nazariyasining gaplar va nutqiy aktlar doirasidagi o'ziga xos qiyofalari aks etgan va turli misollar orqali tasniflangan.
On the Stable Spherically-Symmetric Charged Dust Configurations in General Relativity
Creators: name: Gladush, Valentin D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The radial motion of a self-graviting charged dust and stability condition of the static charged dust spheres are considered. The stability is possible for the bound states of the weakly charged layer with abnormal charge with respect to the active mass.
description: 4 pages, 9 figures
Additional file 4 of A CRISPR toolbox for generating intersectional genetic mouse models for functional, molecular, and anatomical circuit mapping
Creators: name: Lusk, Savannah J.
name: McKinney, Andrew
name: Hunt, Patrick J.
name: Fahey, Paul G.
name: Patel, Jay
name: Chang, Andersen
name: Sun, Jenny J.
name: Martinez, Vena K.
name: Zhu, Ping Jun
name: Egbert, Jeremy R.
name: Allen, Genevera
name: Jiang, Xiaolong
name: Arenkiel, Benjamin R.
name: Tolias, Andreas S.
name: Costa-Mattioli, Mauro
name: Ray, Russell S.
Publisher: name: figshare
Year: 2022
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Computational Biology

description: Additional file 4: Figure S4. Residual plots for independence testing of residuals from plethysmography analyses from Fig. 8. Description of data: Plot of residuals vs model predicted values of the dependent variable.