cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Collimated Fast Wind in the Pre-Planetary Nebula CRL 618
Creators: name: Lee, Chin-Fei
name: Hsu, Ming-Chien
name: Sahai, Raghvendra
Publisher: name: arXiv
Year: 2009
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Collimated fast winds (CFWs) have been proposed to operate during the post-AGB evolutionary phase (and even earlier during the late AGB phase), responsible for the shaping of pre-planetary nebulae (PPNs) and young planetary nebulae (PNs). This paper is a follow-up to our previous study of CFW models for the well-studied PPN CRL 618. Previously, we compared our CFW models with optical observations of CRL 618 in atomic and ionic lines and found that a CFW with a small opening angle can readily reproduce the highly collimated shape of the northwestern (W1) lobe of CRL 618 and the bow-like structure seen at its tip. In this paper, we compare our CFW models with recent observations of CRL 618 in CO J=2-1, J=6-5, and H2 1-0 S(1). In our models, limb-brightened shell structures are seen in CO and H2 at low velocity arising from the shocked AGB wind in the shell, and can be identified as the low-velocity (LV) components in the observations. However, the shell structure in CO J=2-1 is significantly less extended than that seen in the observations. None of our models can properly reproduce the observed high-velocity (HV) molecular emission near the source along the body of the lobe. In order to reproduce the HV molecular emission in CRL 618, the CFW is required to have a different structure. One possible CFW structure is the cylindrical jet, with the fast wind material confined to a small cross section and collimated to the same direction along the outflow axis.
description: 20 pages, 6 figures
A sub-resolution multiphase interstellar medium model of star formation and SNe energy feedback
Creators: name: Murante, Giuseppe
name: Monaco, Pierluigi
name: Giovalli, Martina
name: Borgani, Stefano
name: Diaferio, Antonaldo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a new multi-phase sub-resolution model for star formation and feedback in SPH numerical simulations of galaxy formation. Our model, called MUPPI (MUlti-Phase Particle Integrator), describes each gas particle as a multi-phase system, with cold and hot gas phases, coexisting in pressure equilibrium, and a stellar component. Cooling of the hot tenuous gas phase feeds the cold gas phase. Stars are formed out of molecular gas with a given efficiency, which scales with the dynamical time of the cold phase. Our prescription for star formation is not based on imposing the Schmidt-Kennicutt relation, which is instead naturally produced by MUPPI. Energy from supernova explosions is deposited partly into the hot phase of the gas particles, and partly to that of neighboring particles. Mass and energy flows among the different phases of each particle are described by a set of ordinary differential equations which we explicitly integrate for each gas particle, instead of relying on equilibrium solutions. This system of equations also includes the response of the multi-phase structure to energy changes associated to the thermodynamics of the gas. We apply our model to two isolated disk galaxy simulations and two spherical cooling flows. MUPPI is able to reproduce the Schmidt-Kennicutt relation for disc galaxies. It also reproduces the basic properties of the inter-stellar medium in disc galaxies, the surface densities of cold and molecular gas, of stars and of star formation rate, the vertical velocity dispersion of cold clouds and the flows connected to the galactic fountains. Quite remarkably, MUPPI also provides efficient stellar feedback without the need to include a scheme of kinetic energy feedback. [abridged]
description: 23 pages, 26 figures, MNRAS accepted
Kontrastaine kahjulikud toimed, kontrastainenefropaatia
Creators: name: Luman, Merike
Publisher: name: OÜ Celsius Healthcare
Year: 2007
Subjects: kontrastaine, neerukahjustus, nefrogeenne süsteemne fibroos

description: Röntgenkontrastaine kasutamine radioloogilistel protseduuridel võib põhjustada nefropaatiat ja neerupuudulikkust. Kontrastaine(KA)-nefropaatia on neerufunktsiooni kahjustus, mis ilmneb 48–72 tunni jooksul pärast KA manustamist ja väljendub seerumi kreatiniini sisalduse suurenemises vähemalt 25%ni algväärtusest, kui teised neerufunktsiooni halvenemise põhjused on välistatud.


Eesti Arst 2007; 86 (9): 659-664
description: Eesti Arst, September 2007
Additional file 9 of CD151 drives cancer progression depending on integrin α3β1 through EGFR signaling in non-small cell lung cancer
Creators: name: Zhu, Jianjie
name: Cai, Tingting
name: Zhou, Jieqi
name: Du, Wenwen
name: Zeng, Yuanyuan
name: Liu, Ting
name: Fu, Yulong
name: Li, Yue
name: Qian, Qian
name: Yang, Xiuwei H.
name: Li, Qinglin
name: Huang, Jian-an
name: Liu, Zeyi
Publisher: name: figshare
Year: 2021
Subjects: Biophysics
Biochemistry
Medicine
Cell Biology
Molecular Biology
Pharmacology
Biological Sciences not elsewhere classified
Cancer

description: Additional file 9: Table S4. List of signal densities of human RTK phosphorylation Antibody Array.
Performance analysis and modeling of 22nm FDSOI MOSFETs
Creators: name: Chen, Jin
Publisher: name: Zenodo
Year: 2021
Subjects: FDSOI
Self-Heating Effect
SPICE

description: Outline 22nm FDSOI Process Introduction FDSOI VS BULK Body Biasing in FDSOI Learn about Self-Heating Effect (SHE) 22nm FDSOI SPICE Model Summary
Dressed Relaxation and Dephasing in a Strongly Driven Two-Level system
Creators: name: Wilson, C. M.
name: Johansson, G.
name: Duty, T.
name: Persson, F.
name: Sandberg, M.
name: Delsing, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study relaxation and dephasing in a strongly driven two-level system interacting with its environment. We develop a theory which gives a straightforward physical picture of the complex dynamics of the system in terms of dressed states. In addition to the dressing of the energy diagram, we describe the dressing of relaxation and dephasing. We find a good quantitative agreement between the theoretical calculations and measurements of a superconducting qubit driven by an intense microwave field. The competition of various processes leads to a rich structure in the observed behavior, including signatures of population inversion.
description: 5 pages, 2 figures
Experiences and insights: Working with illustrators to communicate science - Exhibition opening of the comic strip 'World without end' (Jancovici - Blain)
Creators: name: Fouilloux, Anne
Publisher: name: Zenodo
Year: 2024

description: This presentation has been given at the French Institute of Oslo on Wednesday 7th February 2024 for the exhibition opening of the comic strip 'World without end' (Jancovici - Blain).

 

This was an opportunity to share experiences we have to communicate science using illustrations, how it can help to tackle scientific problems from different perspectives and getting insights from a more diverse range of actors.
Critique on Vindication of Panspermia
Creators: name: Vaidya, Pushkar Ganesh
Publisher: name: arXiv
Year: 2009
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In January 2001, air samples were collected from Earth's stratosphere. From these air samples, cultures of three microorganisms were obtained. It was reasoned that these microorganisms are of cometary origin and thereby cometary panspermia stood vindicated. The fact that these microorganisms had essentially the same characteristics as terrestrial microorganisms was explained using cometary panspermia. Here, the findings are reinterpreted in the light of niche ecology and adaptations. It is asserted that the microorganisms captured from the stratosphere cannot be of cometary origin as they are contrary to the kind of microorganisms one would expect to find in a cometary niche.
description: 8 pages, no figures
E-tervishoid ja tervishoiu pildipangad
Creators: name: Ulst, Margus
Publisher: name: OÜ Celsius Healthcare
Year: 2007
Subjects: e-tervishoid, tervishoiu infosüsteemid, pildipank, digitaalradiograafia, kujutiste arhiveerimine, teleradioloogia

description: Kuigi Eesti tervishoius kasutatavad infosüsteemid on valdavalt esmases arengujärgus, ei saa seda öelda 2006. a loodud üleriigilise meditsiinilise Eesti Tervishoiu Pildipanga kohta, kus arhiveeritakse 82% kõigist Eestis tehtavatest radioloogilistest uuringutest ning mida kasutab 95% perearstidest. Viimasel kolmel aastal on arhiveeritavate uuringute arv ja maht järjest kasvanud. Loodud on võimalused teleradioloogiliste teenuste osutamiseks maakonnahaiglatele, samuti võimaldab koostöövõrgustik Eestis töötamist teiste riikide haiglate heaks.


Eesti Arst 2007; 86(9):622-626
description: Eesti Arst, September 2007
Hard-thermal-loop QED thermodynamics
Creators: name: Su, Nan
name: Andersen, Jens O.
name: Strickland, Michael
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The weak-coupling expansion for thermodynamic quantities in thermal field theories is poorly convergent unless the coupling constant is tiny. We discuss the calculation of the free energy for a hot gas of electrons and photons to three-loop order using hard-thermal-loop perturbation theory (HTLpt). We show that the hard-thermal-loop perturbation reorganization improves the convergence of the successive approximations to the QED free energy at large coupling, e ~ 2. The reorganization is gauge invariant by construction, and due to the cancellations among various contributions, we obtain a completely analytic result for the resummed thermodynamic potential at three loops.
description: 3 pages, 3 figures. Talk given at "The 5-th International Conference on Quarks and Nuclear Physics", September 21-26, 2009, Beijing, China
Measurement of the Branching Fraction for J/ψ-> p \bar{p}ηand p \bar{p} η^{'}
Creators: name: BES Collaboration
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 58$\times 10^{6}$ $\jpsi$ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC), the branching fractions of $\jpsi$ to $p\bar{p}η$ and $p\bar{p}\etap$ are determined. The ratio $\frac{Γ(\jpsi\rar\ppbη)}{Γ(\jpsi\rar\ppb)}$ obtained by this analysis agrees with expectations based on soft-pion theorem calculations.
description: 8 pages, 4 figures
Quantum entanglement and disentanglement of multi-atom systems
Creators: name: Ficek, Zbigniew
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a review of recent research on quantum entanglement, with special emphasis on entanglement between single atoms, processing of an encoded entanglement and its temporary evolution. Analysis based on the density matrix formalism are described. We give a simple description of the entangling procedure and explore the role of the environment in creation of entanglement and in disentanglement of atomic systems. A particular process we will focus on is spontaneous emission, usually recognized as an irreversible loss of information and entanglement encoded in the internal states of the system. We illustrate some certain circumstances where this irreversible process can in fact induce entanglement between separated systems. We also show how spontaneous emission reveals a competition between the Bell states of a two qubit system that leads to the recently discovered "sudden" features in the temporal evolution of entanglement. An another problem illustrated in details is a deterministic preparation of atoms and atomic ensembles in long-lived stationary squeezed states and entangled cluster states. We then determine how to trigger the evolution of the stable entanglement and also address the issue of a steered evolution of entanglement between desired pairs of qubits that can be achieved simply by varying the parameters of a given system.
description: Review article
Trace Formulae and Spectral Statistics for Discrete Laplacians on Regular Graphs (I)
Creators: name: Oren, Idan
name: Godel, Amit
name: Smilansky, Uzy
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 05C80

description: Trace formulae for d-regular graphs are derived and used to express the spectral density in terms of the periodic walks on the graphs under consideration. The trace formulae depend on a parameter w which can be tuned continuously to assign different weights to different periodic orbit contributions. At the special value w=1, the only periodic orbits which contribute are the non back- scattering orbits, and the smooth part in the trace formula coincides with the Kesten-McKay expression. As w deviates from unity, non vanishing weights are assigned to the periodic walks with back-scatter, and the smooth part is modified in a consistent way. The trace formulae presented here are the tools to be used in the second paper in this sequence, for showing the connection between the spectral properties of d-regular graphs and the theory of random matrices.
description: 22 pages, 3 figures
Gaseous Dark Matter Detectors
Creators: name: Sciolla, Gabriella
name: Martoff, C. Jeff
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark Matter detectors with directional sensitivity have the potential of yielding an unambiguous positive observation of WIMPs as well as discriminating between galactic Dark Matter halo models. In this article, we introduce the motivation for directional detectors, discuss the experimental techniques that make directional detection possible, and review the status of the experimental effort in this field.
description: 19 pages, review on gaseous directional dark matter detectors submitted to New Journal of Physics
Homoclinic Orbits around Spinning Black Holes I: Exact Solution for the Kerr Separatrix
Creators: name: Levin, Janna
name: Perez-Giz, Gabe
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Under the dissipative effects of gravitational radiation, black hole binaries will transition from an inspiral to a plunge. The separatrix between bound and plunging orbits features prominently in the transition. For equatorial Kerr orbits, we show that the separatrix is a homoclinic orbit in one-to-one correspondence with an energetically-bound, unstable circular orbit. After providing a definition of homoclinic orbits, we exploit their correspondence with circular orbits and derive exact solutions for them. This paper focuses on homoclinic behavior in physical space, while in a companion paper we paint the complementary phase space portrait. The exact results for the Kerr separatrix could be useful for analytic or numerical studies of the transition from inspiral to plunge.
description: 21 pages, some figures
Neurotroofsed tegurid
Creators: name: Koppel, Indrek
name: Sepp, Mari
name: Pruunsild, Priit
name: Tamme, Richard
name: Timmusk, Tõnis
Publisher: name: OÜ Celsius Healthcare
Year: 2007
Subjects: neurotrofiinid, NGF, BDNF, GDNF, närvisüsteemi haigused

description: Neurotroofsed tegurid on sekreteeritavad valgulised kasvutegurid, mis osalevad väga mitmetes närvisüsteemi arengu ja talitluse jaoks olulistes protsessides, sh neuronite arvu, närvijätkete väljakasvu ning harunemise, neuronitevaheliste sünaptiliste ühenduste tekke ja plastilisuse ning kognitiivsete protsesside regulatsioonis. Kahe peamise rühmana eristatakse närvide kasvuteguri (NGF, BDNF, NT-3, NT-4) ja gliia päritolu neurotroofsete tegurite perekonda (GDNF, neurturiin, artemiin, persefiin). Tulenevalt neurotroofsete tegurite võimest hoida elus spetsiifilisi neuronipopulatsioone ja mõjutada närvijätkete kasvu uuritakse intensiivselt nende valkude või nende toimet mimikeerivate madalmolekulaarsete ühendite kliinilisi kasutus    -võimalusi närvisüsteemi haiguste, k.a neurodegeneratiivsete haiguste, meeleolu- ning ärevushäirete, neuropaatiate ja seljaaju traumade ravis.


Eesti Arst 2007; 86(9):614-621
description: Eesti Arst, September 2007
Reducing persecution is more effective for restoring large carnivores than restoring their prey
Creators: name: Bleyhl, Benjamin
name: Ghoddousi, Arash
name: Askerov, Elshad
name: Bocedi, Greta
name: Breitenmoser, Urs
name: Manvelyan, Karen
name: Palmer, Stephen C. F.
name: Soofi, Mahmood
name: Weinberg, Paul
name: Zazanashvili, Nugzar
name: Shmunk, Valerii
name: Zurell, Damaris
name: Kuemmerle, Tobias
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Caucasus
subject: dispersal
subject: Panthera pardus
subject: Persian leopard
subject: poaching
subject: population viability
subject: prioritization
subject: RangeShifter
subject: Spatially explicit population model
subject: 570 Biologie

description: Large carnivores are currently disappearing from many world regions because of habitat loss, prey depletion, and persecution. Ensuring large carnivore persistence requires safeguarding and sometimes facilitating the expansion of their populations. Understanding which conservation strategies, such as reducing persecution or restoring prey, are most effective to help carnivores to reclaim their former ranges is therefore important. Here, we systematically explored such alternative strategies for the endangered Persian leopard (Panthera pardus saxicolor) in the Caucasus. We combined a rule-based habitat suitability map and a spatially explicit leopard population model to identify potential leopard subpopulations (i.e., breeding patches), and to test the effect of different levels of persecution reduction and prey restoration on leopard population viability across the entire Caucasus ecoregion and northern Iran (about 737,000 km2). We identified substantial areas of potentially suitable leopard habitat (~120,000 km2), most of which is currently unoccupied. Our model revealed that leopards could potentially recolonize these patches and increase to a population of >1,000 individuals in 100 yr, but only in scenarios of medium to high persecution reduction and prey restoration. Overall, reducing persecution had a more pronounced effect on leopard metapopulation viability than prey restoration: Without conservation strategies to reduce persecution, leopards went extinct from the Caucasus in all scenarios tested. Our study highlights the importance of persecution reduction in small populations, which should hence be prioritized when resources for conservation are limited. We show how individual-based, spatially explicit metapopulation models can help in quantifying the recolonization potential of large carnivores in unoccupied habitat, designing adequate conservation strategies to foster such recolonizations, and anticipating the long-term prospects of carnivore populations under alternative scenarios. Our study also outlines how data scarcity, which is typical for threatened range-expanding species, can be overcome with a rule-based habitat map. For Persian leopards, our projections clearly suggest that there is a large potential for a viable metapopulation in the Caucasus, but only if major conservation actions are taken towards reducing persecution and restoring prey.
Und soodustavate ravimite kliiniline farmakoloogia ja kasutamise suundumused Eestis
Creators: name: Sonn, Katrin
name: Laius, Ott
name: Irs, Alar
Publisher: name: OÜ Celsius Healthcare
Year: 2015

description: Enamik und soodustavaid ravimeid võimendab aju une-ärkvelolekusüsteemi und soodustavate keskuste funktsiooni. Eestis kasutatakse uinutina valdavalt bensodiasepiine ning nn Z-ravimeid (zopiklooni ja zolpideemi), mis toimivad GABA-A (gamma-aminovõihape A) retseptori kaudu. Soodsama kõrvaltoimete profiiliga uinutite hulka kuuluvad melatoniin ja selle sünteetilised analoogid. Uudse toimemehhanismiga uinutite näiteks on oreksiiniretseptori antagonistid, mis ei ole Eestis praegu kättesaadavad.Unehäirega patsiendi esmases käsitluses on oluline selgitada välja unehäire iseloom, nõustada unehügieeni suhtes ning teha kindlaks võimalikud kaasuvad terviseprobleemid. Uinuti vajadust peab iga patsiendi puhul põhjalikult kaaluma, arvestades uinutite märkimisväärseid koos- ja kõrvaltoimeid, patsiendi vanust ja kaasuvaid haigusi. Artiklis on toodud uinutite ja anksiolüütikumide kasutamise ning väljakirjutamise praktika suundumused Eestis viimastel aastatel.Eesti Arst 2015; 94(11):684–688
description: Eesti Arst, Detsember 2015
The outflow in Mrk 509: A method to calibrate XMM-Newton EPIC-pn and RGS
Creators: name: Detmers, R. G.
name: Kaastra, J. S.
name: Costantini, E.
name: Verbunt, F.
name: Cappi, M.
name: de Vries, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We have analyzed three XMM-Newton observations of the Seyfert 1 galaxy Mrk 509, with the goal to detect small variations in the ionized outflow properties. Such measurements are limited by the quality of the cross-calibration between RGS, the best instrument to characterize the spectrum, and EPIC-pn, the best instrument to characterize the variability. For all three observations we are able to improve the relative calibration of RGS and pn consistently to 4 %. In all observations we detect three different outflow components and, thanks to our accurate cross-calibration we are able to detect small differences in the ionization parameter and column density in the highest ionized component of the outflow. This constrains the location of this component of the outflow to within 0.5 pc of the central source. Our method for modeling the relative effective area is not restricted to just this source and can in principle be extended to other types of sources as well.
description: 11 pages, 9 figures
Renormalization group equations in resonance chiral theory
Creators: name: Sanz-Cillero, J. J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The use of the equations of motion and meson field redefinitions allows the development of a simplified resonance chiral theory lagrangian: terms including resonance fields and a large number of derivatives can be reduced into corresponding O(p2) resonance operators, containing the lowest possible number of derivatives. This is shown by means of the explicit computation of the pion vector form-factor up to next-to-leading order in 1/Nc. The study of the renormalization group equations for the corresponding couplings demonstrates the existence of an infrared fixed point in the resonance theory. The possibility of developing a perturbative 1/Nc expansion in the slow running region around the fixed point is shown here.
description: 6 pages, 3 figures. Final version as published. References added. Extended explanations. The interrelation between the IR fixed point and the UV constraints has been further studied
Correlations and beam splitters for quantum Hall anyons
Creators: name: Vishveshwara, Smitha
name: Cooper, N. R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the system of two localized anyons in the lowest Landau level and show how anyonic signatures extrapolating between anti-bunching tendencies of fermions and bunching tendencies of bosons become manifest in the two-particle correlations. Towards probing these correlations, we discuss the influence of a saddle potential on these anyons; we exploit analogies from quantum optics to analyze the time-evolution of such a system. We show that the saddle potential can act as a beam splitter akin to those in bosonic and fermionic systems and can provide a means of measuring the derived anyonic signatures.
description: 4+ pages, 1 figure
Pseudoconvexity and the envelope of holomorphy for functions of several complex variables
Creators: name: Mullett, Lorne Barry
Publisher: name: University of British Columbia
Year: 2011

description: We first handle some generalizations from the theory of functions of a single complex variable, including results regarding analytic continuation. Several "theorems of continuity" are considered, along with the associated definitions of pseudoconvexity, and these are shown to be equivalent up to a special kind of transformation. By successively applying a form of analytic continuation to a function f , a set of pseudoconvex domains is constructed, and the union of these domains is shown to be the envelope of holomorphy of f .
Impossibility of large phase shifts via the "giant Kerr effect" with single-photon wavepackets
Creators: name: Gea-Banacloche, Julio
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An approximate analytical solution is presented, along with numerical calculations, for a system of two single-photon wavepackets interacting via an ideal, localized Kerr medium. It is shown that, because of spontaneous emission into the initially unoccupied temporal modes, the cross-phase modulation in the Schrodinger picture is very small as long as the spectral width of the single-photon pulses is well within the medium's bandwidth. In this limit, the Hamiltonian used can be derived from the "giant Kerr effect" for a four-level atom, under conditions of electromagnetically-induced transparency; it is shown explicitly that the linear absorption in this system increases as the pulse's spectral width approaches the medium's transparency bandwidth, and hence, as long as the absorption probability remains small, the maximum cross-phase modulation is limited to essentially useless values. These results are in agreement with the general, causality- and unitarity-based arguments of Shapiro and co-workers.
description: 8 pages, 2 figures, to be submitted to Physical Review A
Homoclinic Orbits around Spinning Black Holes II: The Phase Space Portrait
Creators: name: Perez-Giz, Gabe
name: Levin, Janna
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In paper I in this series, we found exact expressions for the equatorial homoclinic orbits: the separatrix between bound and plunging, whirling and not whirling. As a companion to that physical space study, in this paper we paint a phase space portrait of the homoclinic orbits that includes exact expressions for the actions and fundamental frequencies. Additionally, we develop a reduced Hamiltonian description of Kerr motion that allows us to track groups of trajectories with a single global clock. This facilitates a variational analysis, whose stability exponents and eigenvectors could potentially be useful for future studies of families of black hole orbits and their associated gravitational waveforms.
description: 12 pages, 3 figures
Impact of Extended Defects on the yield and Performance of 4H-SiC Power Devices
Creators: name: Schlichting, Holger
Publisher: name: Zenodo
Year: 2021
Subjects: yield
reliability
4H-SiC

description: Outline Introduction: Yield, performance and reliability of 4H-SiC power devices Influences on yield/performance of 4H-SiC power devices Process variations: A example (lithography) Extended epitaxial defects An overview Stacking faults - Dark triangle defects Stacking faults - Light triangle defects Surface pits in implanted areas Influence of epitaxial defects on gate oxide performance Conclusion
Navier-Stokes equations on the flat cylinder with vorticity production on the boundary
Creators: name: Boldrighini, Carlo
name: Buttà, Paolo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q30, 76D05, 76N10

description: We study the two-dimensional Navier-Stokes system on a flat cylinder with the usual Dirichlet boundary conditions for the velocity field u. We formulate the problem as an infinite system of ODE's for the natural Fourier components of the vorticity, and the boundary conditions are taken into account by adding a vorticity production at the boundary. We prove equivalence to the original Navier-Stokes system and show that the decay of the Fourier modes is exponential for any positive time in the periodic direction, but it is only power-like in the other direction.
description: 25 pages
Ultra-sensitive magnetometry based on free precession of nuclear spins
Creators: name: Gemmel, C.
name: Heil, W.
name: Lenz, K.
name: Ludwig, Ch.
name: Thulley, K.
name: Sobolev, Yu.
name: Burghoff, M.
name: Knappe-Grueneberg, S.
name: Kilian, W.
name: Mueller, W.
name: Schnabel, A.
name: Seifert, F.
name: Trahms, L.
name: Baessler, St.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We discuss the design and performance of a very sensitive low-field magnetometer based on the detection of free spin precession of gaseous, nuclear polarized 3He or 129Xe samples with a SQUID as magnetic flux detector. The device will be employed to control fluctuating magnetic fields and gradients in a new experiment searching for a permanent electric dipole moment of the neutron as well as in a new type of 3He/129Xe clock comparison experiment which should be sensitive to a sidereal variation of the relative spin precession frequency. Characteristic spin precession times T_2 of up to 60h could be measured. In combination with a signal-to-noise ratio of > 5000:1, this leads to a sensitivity level of deltaB= 1fT after an integration time of 220s and to deltaB= 10^(-4)fT after one day. Even in that sensitivity range, the magnetometer performance is statistically limited, and noise sources inherent to the magnetometer are not limiting. The reason is that free precessing 3He (129Xe) nuclear spins are almost completely decoupled from the environment. That makes this type of magnetometer in particular attractive for precision field measurements where a long-term stability is required.
title: The mid-Victorian professional woman of letters: Geraldine Endsor Jewsbury and the economics of the publishing and literary marketplace, 1840-1880
Creators: name: Dunn, Zoë Louise
Publisher: name: University of Kent
Year: 2003

description: This thesis addresses the nature of female professionalism within the literary and publishing marketplace of mid-Victorian Britain, by examining Geraldine Jewsbury's career (1812-1880) as a publisher's reader, reviewer and circulating library novelist. I address the economics of women's writing, from detailed examination of Jewsbury's earnings (in comparison to Braddon, Oliphant and Craik) to discussion about the prejudice of women's literary professionalism. Written from a cultural-historical perspective, this thesis assesses Jewsbury's representations of. religious scepticism, love, passion, women's vocation, education and industrial reform. Examining not only her fiction, but also Jewsbury's numerous reader's reports, critical reviews and letters, I create a composite picture of the professional Mid-Victorian woman writer. This thesis draws on a wide array of archival material, (British Library Bentley Manuscripts, Mantell Papers, Dolaucothi Collection, Bentley Manuscripts from California and Illinois Universities), a good number of which have previously remained outside Jewsbury scholarship. It examines Jewsbury's unique role as publisher's reader, and relates this to patterns of female literary professionalism. Jewsbury's first three novels, Zoe (1845), The Haýf Sisters (1848) and Marian Withers (185 1), initiate a discussion within mid-Victorian fiction about the question of religious scepticism, women's vocation and the need for associative principles within industrial relations. I consider Jewsbury's contribution to literary criticism as an anonymous female in an established male field (as Athenaeum fiction reviewer) and explore her paradoxical ideology about the women reader and writer. This is mainly addressed through her contradictory conservative morality and appreciation of the popularity and commercial success of sensationalism in the 1860s. The theoretical assumption behind this thesis is that an historical approach, backed up by archival research, will take us as long way to understanding Jewsbury's literary professionalism. As such, this thesis contributes to recent feminist criticism which recognises the need to relate women writers to the marketplace, perceiving their writing as containing divergent ideologies of the representations of female professionalism. Therefore the significance of Jewsbury's work and career is seen through its relevance to wider contemporary debates and its importance to furthering an understanding of Victorian literature, society and feminist criticism.
Information and (co-)variances in discrete evolutionary genetics involving solely selection
Creators: name: Huillet, Thierry
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: The purpose of this Note is twofold: First, we introduce the general formalism of evolutionary genetics dynamics involving fitnesses, under both the deterministic and stochastic setups, and chiefly in discrete-time. In the process, we particularize it to a one-parameter model where only a selection parameter is unknown. Then and in a parallel manner, we discuss the estimation problems of the selection parameter based on a single-generation frequency distribution shift under both deterministic and stochastic evolutionary dynamics. In the stochastics, we consider both the celebrated Wright-Fisher and Moran models.
description: a paraitre dans Journal of Statistical Mechanics: Theory and Applications
Uuringu „Epidemioloogiline ja geneetiline tõendus tervishoiutöötajate suitsetamiskäitumise ja nikotiinisõltuvuse kohta“ andmed on kogutud
Creators: name: Paapsi, Keiu
name: Pärna, Kersti
Publisher: name: OÜ Celsius Healthcare
Year: 2015

description: Eesti Arst 2015; 94(11):697
description: Eesti Arst, Detsember 2015
Generalization of topological spaces
Creators: name: Lim, Kim-Leong
Publisher: name: University of British Columbia
Year: 2011

description: Given a set X , let P(X) be the collection of all subsets of X . A nonempty sub-collection u, of P(X) is called a generalized topology for X and the ordered pair (X, u) is called a generalized topological space or an abstract space or simply a space. Elements of u are said to be u-open and their complements are said to be u-closed. We define u-closure, u-limit point, ….. and so on in the natural way. Most of the basic notions in point set topology are defined analogously. It is expected that many important results in point set topology will not be carried over and a number of interesting properties will be lost or weakened. Nevertheless, some of them will still hold true despite the absence of the finite intersection axiom and the arbitrary union axiom for the collection of subsets. The primary objective of this thesis is to investigate which theorems in point set topology still remain valid in our more general setting. A secondary objective is to provide some counterexamples showing certain basic results in point set topology turn out to be false in the setting. It should be noted that other basic notions which are not discussed here at all can be defined similarly. However, in order to attain desirable and interesting conclusions, additional conditions must be imposed.
Additional file 1 of Prevalence of functional gastrointestinal disorders in infants and young children in China
Creators: name: Huang, Ying
name: Tan, Serene Yaling
name: Parikh, Panam
name: Buthmanaban, Vanitha
name: Rajindrajith, Shaman
name: Benninga, Marc Alexander
Publisher: name: figshare
Year: 2021
Subjects: Medicine
Cell Biology
Neuroscience
Pharmacology
Biotechnology
Mental Health

description: Additional file 1: Supplementary file 1. Questionnaire for assessment of Functional Gastrointestinal Disorders in infants and young children.
Adaptive Fault Masking With Incoherence Scoring
Creators: name: Alagoz, B. Baykant
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: An adaptive voting algorithm for digital media was introduced in this study. Availability was improved by incoherence scoring in voting mechanism of Multi-Modular Redundancy. Regulation parameters give the algorithm flexibility of adjusting priorities in decision process. Proposed adaptive voting algorithm was shown to be more aware of fault status of redundant modules
A Comprehensive Analysis of Swift/XRT Data: IV. Single Power-Law Decaying Lightcurves vs. Canonical Lightcurves and Implications for a Unified Origin of X-rays
Creators: name: Liang, En-Wei
name: Lv, Hou-Jun
name: Hou, Shu-Jin
name: Zhang, Bin-Bin
name: Zhang, Bing
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: By analyzing the Swift/XRT lightcurves detected before 2009 July, we find 19 cases that monotonously decay as a single power law (SPL) with an index of 1 ~ 1.7 from tens (or hundreds) to ~ 10^5 seconds post the GRB trigger, apparently different from the canonical lightcurves characterized by a shallow-to-normal decay transition. No statistical difference is found in their prompt gamma-rays, and the X-ray properties of the two samples are also similar, although the SPL sample tend to have a slightly lower NH value of the host galaxies and larger energy release compared with the canonical sample. The SPL XRT lightcurves in the burst frame gradually merge into a conflux.The normal decay segment for the canonical sample has the same feature. Similar to the normal decay segment, the SPL lightcurves satisfy the closure relations of external shock models. If the X-rays are the afterglow of the GRB fireball, our results indicate that the shallow decay would be due to energy injection and the total energy budget after injection for both samples of GRBs is comparable. More intriguing, we find that a prior X-ray emission model proposed by Yamazaki is more straightforward to interpret the data. We show that the zero times (T0) of the X-rays atisfy a log-normal distribution, and the negligible T0's of the SPL sample are consistent with being the tail of T0 distributions at low end. Referenced to T0, the canonical XRT lightcurves well trace the SPL lightcurves. The T0's of the canonical lightcurves in our analysis are usually much larger than the offsets of the known precursors from the main GRBs, indicating the X-rays would be an emission component from external shocks prior to GRB trigger. The lack of detection of a jet-like break in most XRT lightcurves implies that the opening angle of its jet would be usually large.
description: 34 pages, including 2 tables and 9 figures. Accepted for publications in ApJ. This is the forth paper of a series. Paper I, II, and III see astro-ph/0612246 (ApJ, 2007, 666,1002), arXiv:0705.1373 (ApJ, 2007, 670, 565), and arXiv:0708.2942 (ApJ, 2008, 675, 528)
Tartu Ülikooli Kliinikum annab teadustöö soodustamiseks välja stipendiumi
Creators: name: Toimetus, Eesti Arsti
Publisher: name: OÜ Celsius Healthcare
Year: 2015

description: Eesti Arst 2015; 94(11):698
description: Eesti Arst, Detsember 2015
title: Κρυσταλλικότητα πολυαιθυλενίου
title: Crystallization of polyethylene
titleType: AlternativeTitle
Creators: name: Ιβάνοβ, Εμίλ
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2021
Subjects: Πολυμερή
Κρυσταλλικότητα πολυαιθυλενίου
Μακρομοριακές αλυσίδες
Πολυαιθυλένιο

description: Η δομή ενός υλικού, δηλαδή τα είδη και ο τρόπος οργάνωσης των εσωτερικών συστατικών του αποτελεί θεμελιώδες αντικείμενο μελέτης ώστε να ερμηνευθούν να αξιολογηθούν και να προβλεφθούν οι ιδιότητες του υλικού. Τα κρυσταλλικά υλικά περιλαμβάνουν τάξη και περιοδικότητα των δομικών λίθων, με αποτέλεσμα να δημιουργούνται συγκεκριμένες κανονικές γεωμετρικές δομές. Τα φυσικά και τα συνθετικά μακρομόρια παρουσιάζουν κρυσταλλικοτητα διαφόρων βαθμών και ποσοστών, ώστε αυτά να είναι κατάλληλα για διαφορετικές χρήσεις και εφαρμογές. Τα διάφορα είδη πολυαιθυλενίου αποτελούν χαρακτηριστικές περιπτώσεις συνθετικών πολυμερών, οι διαφορετικές κρυσταλλικές δομές των οποίων είναι αντικείμενο συστηματικής μελέτης προκειμένου να εξακριβωθεί η ακριβής διάταξη των μακρομοριακών αλυσίδων. Στην εργασία μελετώνται οι διαμόρφωσης των αλυσίδων του πολυμερούς, η τακτικότητα της αναδίπλωσης τους, τα κρυσταλλικά φυλλίδια που σχηματίζονται η αναλογία όμορφων και κρυσταλλικών περιοχών, τα χαρακτηριστικά αυτά συσχετίζονται Με τις μηχανικές ιδιότητες και την πραγματική συμπεριφορά των πολυμερών στις εφαρμογές τους.
Ida-Tallinna Keskahaigla preemia parima Eesti Arstis 2014. aastal ilmunud haigusjuhu kirjelduse eest
Creators: name: Toimetus, Eesti Arsti
Publisher: name: OÜ Celsius Healthcare
Year: 2015

description: Eesti Arst 2015; 94(11):698
description: Eesti Arst, Detsember 2015
Multiphase PC/PL Relations: Comparison between Theory and observations
Creators: name: Kanbur, S.
name: Marconi, M.
name: Ngeow, C.
name: Musella, I.
name: Turner, M.
name: Magin, S.
name: Halsey, J.
name: Bissel, C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Cepheids are fundamental objects astrophysically in that they hold the key to a CMB independent estimate of Hubble's constant. A number of researchers have pointed out the possibilities of breaking degeneracies between Omega_Matter and H0 if there is a CMB independent distance scale accurate to a few percent (Hu 2005). Current uncertainties in the distance scale are about 10% but future observations, with, for example, the JWST, will be capable of estimating H0 to within a few percent. A crucial step in this process is the Cepheid PL relation. Recent evidence has emerged that the PL relation, at least in optical bands, is nonlinear and that neglect of such a nonlinearity can lead to errors in estimating H0 of up to 2 percent. Hence it is important to critically examine this possible nonlinearity both observationally and theoretically. Existing PC/PL relations rely exclusively on evaluating these relations at mean light. However, since such relations are the average of relations at different phases. Here we report on recent attempts to compare theory and observation in the multiphase PC/PL planes. We construct state of the art Cepheid pulsations models appropriate for the LMC/Galaxy and compare the resulting PC/PL relations as a function of phase with observations. For the LMC, the (V-I) period-color relation at minimum light can have quite a narrow dispersion (0.2-0.3 mags) and thus could be useful in placing constraints on models. At longer periods, the models predict significantly redder (by about 0.2-0.3 mags) V-I colors. We discuss possible reasons for this and also compare PL relations at various phases of pulsation and find clear evidence in both theory and observations for a nonlinear PL relation.
description: 5 pages, 8 figures, proceeding for "Stellar Pulsation: Challenges for Theory and Observation", Santa Fe 2009
Carbon dioxide (CO2) emissions from the service industry, traffic, and secondary industry as revealed by the remotely sensed nighttime light data
Creators: name: Shi, Kaifang
name: Shen, Jingwei
name: Wu, Yizhen
name: Liu, Shirao
name: Li, Linyi
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Exploring carbon dioxide (CO2) emissions from human activities is essential for urban energy conservation and resource management. Remotely sensed nighttime lights from the Suomi NPP-VIIRS provide spatial consistency in and a low-cost way of revealing CO2 emissions. Although many researches have documented the feasibility of the Suomi NPP-VIIRS data for assessing CO2 emissions, few have systematically revealed the ability of nighttime lights for evaluating CO2 emissions from different industries, such as service industry CO2 emissions (SC), traffic CO2 emissions (TC), and secondary industry CO2 emissions (IC). Here, China was selected as the experimental subject, and we comprehensively explored the relationships between the nighttime lights and SC, TC, and IC, and investigated the factors mediating these relationships. We found that without considering other factors, the nighttime lights only revealed up to 51.2% of TC, followed by 41.7% of IC and 22.7% of SC. When controlling for city characteristic variables, the models showed that there were positive correlations between the Suomi NPP-VIIRS data and SC, IC, and TC, and that nighttime lights have an Inverted-U relationship with SC. The Suomi NPP-VIIRS data are more suitable for revealing SC, TC, and IC in medium-sized and large-sized cities than in small-sized cities and megacities.
Current Status of Graphene Transistors
Creators: name: Lemme, Max C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This paper reviews the current status of graphene transistors as potential supplement to silicon CMOS technology. A short overview of graphene manufacturing and metrology methods is followed by an introduction of macroscopic graphene field effect transistors (FETs). The absence of an energy band gap is shown to result in severe shortcomings for logic applications. Possibilities to engineer a band gap in graphene FETs including quantum confinement in graphene Nanoribbons (GNRs) and electrically or substrate induced asymmetry in double and multi layer graphene are discussed. Graphene FETs are shown to be of interest for analog radio frequency applications. Finally, novel switching mechanisms in graphene transistors are briefly introduced that could lead to future memory devices.
description: 11 pages, 6 figures
Characterization of rank two subspaces of a tensor product space
Creators: name: Iwata, George Fumimaro
Publisher: name: University of British Columbia
Year: 2011

description: Let U, V be two vector spaces of dimensions n and m, respectively, over an algebraically closed field F; let U⊗V be their tensor product; and let Rk(U⊗V) be the set of all rank k tensors in U⊗V, that is Rk(U⊗V) = {[formula omitted] are each linearly independent in U and V respectively}. We first obtain conditions on two vectors X and Y that they be members of a subspace H contained in Rk(U⊗V). In chapter 2, we restrict our consideration to the rank 2 case, and derive a characterization of subspaces contained in R2(U⊗V). We show that any such subspace must be one of three types, and we find the maximum dimension of each type. We also find the dimension of the intersection of two subspaces of different types. Finally, we show that any maximal subspace has a dimension which depends only on its type.