cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Necessary conditions for out-of-plane lattice plasmons in nanoparticle arrays
Creators: name: Li, Gordon Han Ying
name: Li, Guangyuan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Out-of-plane lattice plasmons (OLPs) supported by metallic nanoparticle arrays are promising for diverse applications due to their remarkably narrow linewidths and significant enhancement of local fields. Here we investigate the necessary conditions for metallic nanoparticle arrays to achieve OLPs. Our results show that, besides the prerequisites of large height, oblique incidence, and TM polarization, which have been pointed out by the literature; the array period should be properly designed within a limited range, the dielectric environment should be homogeneous, and the height and the angle of incidence need to be optimized. We expect this work will advance the understanding and engineering of OLPs in metallic nanoparticle arrays and promote their applications in nanolasers, ultrasensitive biochemical sensors, and nonlinear optics.
description: 9 pages, 8 figures
CBD as the New Medicine in the Pain Provider’s Armamentarium
Creators: name: Piermarini, Charlie
name: Viswanath, Omar
Publisher: name: Adis Journals
Year: 2019
Subjects: Medicine
Anesthesiology

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Additional file 1 of Tobacco smoke condensate-induced senescence in endothelial cells was ameliorated by colchicine treatment via suppression of NF-κB and MAPKs P38 and ERK pathways activation
Creators: name: Khan, Dilaware
name: Zhou, Huakang
name: You, Jinliang
name: Kaiser, Vera Annika
name: Khajuria, Rajiv K
name: Muhammad, Sajjad
Publisher: name: figshare
Year: 2024
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Supplementary Material 1
The Oxyometer: A Novel Instrument Concept for Characterizing Exoplanet Atmospheres
Creators: name: Baker, Ashley D.
name: Blake, Cullen H.
name: Halverson, Sam
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: With TESS and ground-based surveys searching for rocky exoplanets around cooler, nearby stars, the number of Earth-sized exoplanets that are well-suited for atmospheric follow-up studies will increase significantly. For atmospheric characterization, the James Webb Space Telescope will only be able to target a small fraction of the most interesting systems, and the usefulness of ground-based observatories will remain limited by a range of effects related to Earth's atmosphere. Here, we explore a new method for ground-based exoplanet atmospheric characterization that relies on simultaneous, differential, ultra-narrow-band photometry. The instrument uses a narrow-band interference filter and an optical design that enables simultaneous observing over two 0.3 nm wide bands spaced 1 nm apart. We consider the capabilities of this instrument in the case where one band is centered on an oxygen-free continuum region while the other band overlaps the 760 nm oxygen band head in the transmission spectrum of the exoplanet, which can be accessible from Earth in systems with large negative line-of-sight velocities. We find that M9 and M4 dwarfs that meet this radial velocity requirement will be the easiest targets but must be nearby (<8 pc) and will require the largest upcoming Extremely Large Telescopes. The oxyometer instrument design is simple and versatile and could be adapted to enable the study of a wide range of atmospheric species. We demonstrate this by building a prototype oxyometer and present its design and a detection of a 50 ppm simulated transit signal in the laboratory. We also present data from an on-sky test of a prototype oxyometer, demonstrating the ease of use of the compact instrument design.
description: 27 pages, 13 figures
Gerris (Gerris) caucasicus Kanyukova 1982
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Gerris
Gerris caucasicus

description: Gerris (Gerris) caucasicus Kanyukova, 1982
 Gerris (Gerris) caucasicus Kanyukova, 1982: 66, 72, 74, 88–90, 92, Figs 29, 82–85 (original description, key).
Two paratypes are deposited in NMPC:
 PARATYPE (J macr.): ‘КумбашИ, мοрце / Ленкоран. у. [p] 23.IV.[hw] / КиричеНКО 909 [p] [= Kumbashi, mortse, Lenkoran. u., Kiritshenko, 23.iv.1909] // Paratypus [p, red label] // Gerris / caucasicus Kan. / Kanyukova det. [hw] // J [p] // PARATYPUS / GERRIS / CAUCASICUS / Kanyukova, 1982, labelled: P. KMENT 2013 [p, red label]’.
 PARATYPE (♀ macr.): ‘КумбашИ, мοрце / Ленкоран. у. / КиричеНКО [p] 23.IV.[hw] 909 [p] [= Kumbashi, mortse, Lenkoran. u., Kiritshenko, 23.iv.1909] // Paratypus [p, red label] ♀ [p] // PARATYPUS / GERRIS / CAUCASICUS / Kanyukova, 1982, labelled: P. KMENT 2013 [p, red label]’.
 Current status. Valid species (see ANDERSEN 1994, 1995a,b; KANYUKOVA 2006; FENT et al. 2011; AUKEMA et al. 2013; DAMGAARD et al. in press).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 862, DOI: 10.5281/zenodo.5740731
Models for little rip dark energy
Creators: name: Ludwick, Kevin J.
name: Frampton, Paul H.
name: Scherrer, Robert J.
name: Nojiri, Shinʼichi
name: Odintsov, Sergei D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: We examine in more detail specific models which yield a little rip cosmology, i.e., a universe in which the dark energy density increases without bound but the universe never reaches a finite time singularity. We derive the conditions for the little rip in terms of the inertial force in the expanding universe and present two representative models to illustrate in more detail the difference between little rip models and those which are asymptotically de Sitter. We derive conditions on the equation of state parameter of the dark energy to distinguish between the two types of models. We show that coupling between dark matter and dark energy with a little rip equation of state can alter the evolution, changing the little rip into an asymptotic de Sitter expansion. We give conditions on minimally coupled phantom scalar field models and on scalar-tensor models that indicate whether or not they correspond to a little rip expansion. We show that, counterintuitively, despite local instability, a little rip cosmology has an infinite lifetime.
Long-range antiferromagnetic order in the S=1 chain compound LiVGe2O6
Creators: name: Lumsden, M. D.
name: Granroth, G. E.
name: Mandrus, D.
name: Nagler, S. E.
name: Thompson, J. R.
name: Castellan, J. P.
name: Gaulin, B. D.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The phase transition in the compound LiVGe2O6 has been proposed as a unique example of a spin-Peierls transition in an S=1 antiferromagnetic chain. We report neutron and x-ray diffraction measurements of LiVGe2O6 above and below the phase transition at T=24 K. No evidence is seen for any structural distortion associated with the transition. The neutron results indicate that the low temperature state is antiferromagnetic, driven by ferromagnetic interchain couplings.
description: 4 pages, 4 ps figures, REVTEX, submitted to PRL
Realization of a Large-Acceptance Faraday Cup for 3 MeV Electrons
Creators: name: Johnston, R.
name: Bernauer, J.
name: Cooke, C. M.
name: Corliss, R.
name: Epstein, C. S.
name: Fisher, P.
name: Friščić, I.
name: Hasell, D.
name: Ihloff, E.
name: Kelsey, J.
name: Lee, S.
name: Milner, R. G.
name: Moran, P.
name: Steadman, S. G.
name: Vidal, C.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The design, construction, installation, and testing of a Faraday Cup intended to measure the current of a 3 MeV, 1 microampere electron beam is described. Built as a current monitor for a Møller scattering measurement at the MIT High Voltage Research Laboratory, the device combines a large angular acceptance with the capability to measure a continuous, low energy beam. Bench studies of its performance demonstrate current measurements accurate to the percent level at 1 microampere. The Faraday Cup was designed and constructed at MIT and has been in use at the HVRL since 2017, providing a significantly more detailed measurement of beam current than was previously available.
description: 4 pages
Representing their own? Ethnic minority women in the Dutch Parliament
Creators: name: Mügge, Liza M.
name: Pas, Daphne J. Van Der
name: Wardt, Marc Van De
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Ethnic minority women tend to be better represented in parliaments than ethnic minority men. What does this mean for their substantive representation? This article makes use of intersectional analysis to study how the relationship between descriptive and substantive representation differs within and between gender and ethnic groups. Drawing on written parliamentary questions and the committee memberships of MPs in seven parliamentary sessions (1995–2012) in the Netherlands, a strong link is found between descriptive and substantive representation. Female ethnic minority MPs more often sit on committees and table questions that address ethnic minority women’s interests than male ethnic minority and female ethnic majority MPs. The link, however, is fragile as it is based on a small number of active MPs. This demonstrates the importance of an intersectional approach to understanding how representation works in increasingly diverse parliaments, which cannot be captured by focusing on gender or ethnicity alone.
title: From “Single Sites” to Stable Nanoparticles Derived from Spray-Flame Synthesized Solid Solutions of Cobalt in MgO for Ammonia Decomposition
Creators: name: Alkan, Barış
name: Duarte-Correa, Liseth
name: Girgsdies, Frank
name: Koch, Gregor
name: Kröhnert, Jutta
name: Ertegi, Mervan
name: Jiang, Shan
name: Lunkenbein, Thomas
name: Trunschke, Annette
Publisher: name: Humboldt-Universität zu Berlin
Year: 2025
Subjects: subject: ammonia decomposition
subject: spray-flame synthesis
subject: cobalt
subject: exsolution
subject: CoO–MgO solid solution
subject: particle size effect
subject: structure sensitivity
subject: 540 Chemie und zugeordnete Wissenschaften

description: Chemical energy storage, in particular, the storage of hydrogen in carbon-free molecules such as ammonia, is being considered as an essential element in the transformation of our future energy system. In the present work, cobalt catalysts were investigated as alternatives to Ru- and Ni-based materials for the decomposition of ammonia. Spray-flame synthesis (SFS) was used to prepare metastable, phase-pure solid solutions Mg1–xCoxO, 0.03 ≤ x ≤ 0.47, as catalyst precursors composed of oxide nanoparticles with a particle size of 7–8 nm. In situ and operando XRD, H2-TPR studies, electron microscopy, Raman spectroscopy, and FTIR spectroscopy of adsorbed CO were applied to characterize the nanostructure of the host oxides and catalysts generated by exsolution of Co under reductive conditions. Calcination at 600 °C causes partial segregation of a Co3O4 spinel phase at a higher Co content (x ≥ 0.24). Small Co clusters are formed by exsolution from the solid solution, while the reduction of the spinel component yields Co nanoparticles of 3.3–8.5 nm. Very high space-time yields of 19 mmolH2·gcat–1·min–1 at 500 °C can be achieved due to the high dispersion of metallic cobalt. The turnover frequency (TOF) for metallic nanoparticles in the range between 1 and 5 nm remains constant at about 0.2 s–1, suggesting a structure insensitivity of the reaction in this size range at industrially relevant reaction conditions (500 °C, 100% NH3, WHSV of 36,000 N mL·g–1·h–1, 1 atm) caused by structural dynamics. Only atomically dispersed cobalt shows a TOF of about 0.5 s–1. The Co/Mg1–xCoxO catalysts exhibit very good stability even at high Co contents under the harsh conditions of ammonia decomposition due to strong metal–support interaction, making continuous SFS, which is potentially scalable, an attractive method for preparing cost-effective and resource-saving catalysts for ammonia decomposition.
Toeplitz operators on concave corners and topologically protected corner states
Creators: name: Hayashi, Shin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: K-Theory and Homology (math.KT)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 19K56 (Primary), 47B35, 81V99 (Secondary)

description: We consider Toeplitz operators defined on a concave corner-shaped subset of the square lattice. We obtain a necessary and sufficient condition for these operators to be Fredholm. We further construct a Fredholm concave corner Toeplitz operator of index one. By using this, a relation between Fredholm indices of quarter-plane and concave corner Toeplitz operators is clarified. As an application, topological invariants and corner states for some bulk-edges gapped Hamiltonians on two-dimensional (2-D) class AIII and 3-D class A systems with concave corners are studied. Explicit examples clarify that these topological invariants depend on the shape of the system. We discuss the Benalcazar--Bernevig--Hughes' 2-D Hamiltonian and see that there still exists topologically protected corner states even if we break some symmetries as long as the chiral symmetry is preserved.
description: v2: references added, typos corrected. 29 pages, 6 figures
Backreaction of Hawking radiation on a gravitationally collapsing star I: Black holes?
Creators: name: Mersini-Houghton, Laura
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Particle creation leading to Hawking radiation is produced by the changing gravitational field of the collapsing star. The two main initial conditions in the far past placed on the quantum field from which particles arise, are the Hartle Hawking vacuum and the Unruh vacuum. The former leads to a time symmetric thermal bath of radiation, while the latter to a flux of radiation coming out of the collapsing star. The energy of Hawking radiation in the interior of the collapsing star is negative and equal in magnitude to its value at future infinity. This work investigates the backreaction of Hawking radiation on the interior of a gravitationally collapsing star, in a Hartle-Hawking initial vacuum. It shows that due to the negative energy Hawking radiation in the interior, the collapse of the star stops at a finite radius, before the singularity and the event horizon of a black hole have a chance to form. That is, the star bounces instead of collapsing to a black hole. A trapped surface near the last stage of the star's collapse to its minimum size may still exist temporarily. Its formation depends on the details of collapse. Results for the case of Hawking flux of radiation with the Unruh initial state, will be given in a companion paper II.
Population Genomics: Whole-Genome Analysis of Polymorphism and Divergence in Drosophila simulans
Creators: name: Poh, Yu-Ping
name: Langley, Charles H
name: Holloway, Alisha K
name: Nista, Phillip M
name: Hillier, LaDeana W
name: Jones, Corbin D
name: Kern, Andrew D
name: Begun, David J
name: Stevens, Kristian
name: Myers, Eugene
name: Dewey, Colin N
name: Hahn, Matthew W
name: Pachter, Lior
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: The population genetic perspective is that the processes shaping genomic variation can be revealed only through simultaneous investigation of sequence polymorphism and divergence within and between closely related species. Here we present a population genetic analysis of Drosophila simulans based on whole-genome shotgun sequencing of multiple inbred lines and comparison of the resulting data to genome assemblies of the closely related species, D. melanogaster and D. yakuba. We discovered previously unknown, large-scale fluctuations of polymorphism and divergence along chromosome arms, and significantly less polymorphism and faster divergence on the X chromosome. We generated a comprehensive list of functional elements in the D. simulans genome influenced by adaptive evolution. Finally, we characterized genomic patterns of base composition for coding and noncoding sequence. These results suggest several new hypotheses regarding the genetic and biological mechanisms controlling polymorphism and divergence across the Drosophila genome, and provide a rich resource for the investigation of adaptive evolution and functional variation in D. simulans.
Heuristic derivation of continuum kinetic equations from microscopic dynamics
Creators: name: Leung, Kwan-tai
Publisher: name: arXiv
Year: 2000
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present an approximate and heuristic scheme for the derivation of continuum kinetic equations from microscopic dynamics for stochastic, interacting systems. The method consists of a mean-field type, decoupled approximation of the master equation followed by the `naive' continuum limit. The Ising model and driven diffusive systems are used as illustrations. The equations derived are in agreement with other approaches, and consequences of the microscopic dependences of coarse-grained parameters compare favorably with exact or high-temperature expansions. The method is valuable when more systematic and rigorous approaches fail, and when microscopic inputs in the continuum theory are desirable.
description: 7 pages, RevTeX, two-column, 4 PS figures included
Gerris (Gerris) comatus Drake & Hottes 1925
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Gerris
Gerris comatus

description: Gerris (Gerris) comatus Drake & Hottes, 1925
 Gerris (Gerris) comatus Drake & Hottes, 1925: 48–49 (original description).
One paratype is deposited in NMPC:
PARATYPE (J macr.): ‘Ames. Iowa [p] / X-18 [hw] 192[p]4 [hw] / C. [p] J. [hw] Drake [p] // H G Barber / Colln 1950 [p] // PARATYPE [p] / Gerris / comatus / D + H [hw, red label] // Gerris / comatus / D. & H. [hw, white label with black frame submarginally] // J [p]’.
 Current status. Valid species: Gerris (Gerris) comatus Drake & Hottes, 1925 (see SMITH 1988b; ANDERSEN 1994, 1995b; DAMGAARD et al. in press).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 863, DOI: 10.5281/zenodo.5740731
Effects of $Δ(1905)5/2^+$ on $K^*Σ$ photoproduction
Creators: name: Wang, A. C.
name: Wang, W. L.
name: Huang, F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The two-channel photoproductions of $γp \to K^{*+} Σ^{0}$ and $γp \to K^{*0} Σ^{+}$ are investigated based on an effective Lagrangian approach at the tree-level Born approximation. In addition to the $t$-channel $K$, $κ$, $K^*$ exchanges, the $s$-channel nucleon ($N$) and $Δ$ exchanges, the $u$-channel $Λ$, $Σ$, $Σ^*$ exchanges, and the generalized contact term, we try to take into account the minimum number of baryon resonances in constructing the reaction amplitudes to describe the experimental data. It is found that by including the $Δ(1905)5/2^+$ resonance with its mass, width, and helicity amplitudes taken from the Review of Particle Physics [Particle Data Group, C. Patrignani {\it et al.}, Chin. Phys. C {\bf 40}, 100001 (2016)], the calculated differential and total cross sections for these two reactions are in good agreement with the experimental data. An analysis of the reaction mechanisms shows that the cross sections of $γp \to K^{*+}Σ^{0}$ are dominated by the $s$-channel $Δ(1905)5/2^+$ exchange at low energies and $t$-channel $K^*$ exchange at high energies, with the $s$-channel $Δ$ exchange providing significant contributions in the near-threshold region. For $γp \to K^{*0}Σ^{+}$, the angular dependences are dominated by the $t$-channel $K$ exchange at forward angles and the $u$-channel $Σ^*$ exchange at backward angles, with the $s$-channel $Δ$ and $Δ(1905)5/2^+$ exchanges making considerable contributions at low energies. Predictions are given for the beam, target, and recoil asymmetries for both reactions.
description: 11 pages, 8 figures, version published in PRC. arXiv admin note: text overlap with arXiv:1704.04562
Correction: Warming and Resource Availability Shift Food Web Structure and Metabolism
Creators: name: Piehler, Michael F.
name: Leech, Dina M.
name: Bruno, John F.
name: Anton, Andrea
name: O'Connor, Mary I.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Climate change disrupts ecological systems in many ways. Many documented responses depend on species' life histories, contributing to the view that climate change effects are important but difficult to characterize generally. However, systematic variation in metabolic effects of temperature across trophic levels suggests that warming may lead to predictable shifts in food web structure and productivity. We experimentally tested the effects of warming on food web structure and productivity under two resource supply scenarios. Consistent with predictions based on universal metabolic responses to temperature, we found that warming strengthened consumer control of primary production when resources were augmented. Warming shifted food web structure and reduced total biomass despite increases in primary productivity in a marine food web. In contrast, at lower resource levels, food web production was constrained at all temperatures. These results demonstrate that small temperature changes could dramatically shift food web dynamics and provide a general, species-independent mechanism for ecological response to environmental temperature change.
Giant transverse magnetoresistance in an asymmetric system of three GaAs/AlGaAs quantum wells in a strong magnetic field at room temperature
Creators: name: Tsebro, V. I.
name: Omel'yanovskii, O. E.
name: Kapaev, V. V.
name: Kopaev, Yu. V.
name: Kadushkin, V. I.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The giant transverse magnetoresistance is observed in the case of photoinduced nonequilibrium carriers in an asymmetric undoped system of three GaAs/AlGaAs quantum wells at room temperature. In a magnetic field of 75 kOe, the resistance of nanostructure being studied increases by a factor of 1.85. The magnetoresistance depends quadratically on the magnetic field in low fields and tends to saturation in high fields. This phenomenon is attributed to the rearrangement of the electron wave function in magnetic field. Using the fact that the incoherent part of the scattering probability for electron scattering on impurities and bulk defects is proportional to the integral of the forth power of the envelope wave function, the calculated field dependence of the magnetoresistance is shown to be similar to that observed experimentally.
description: 3 pages, 4 figures. Forgotten to be submitted in due time
Spin-triplet `f-wave' pairing proposed for an organic superconductor (TMTSF)_2 PF_6
Creators: name: Kuroki, Kazuhiko
name: Arita, Ryotaro
name: Aoki, Hideo
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: By examining how the spin- and/or charge-fluctuation exchange can contribute to pairing instabilities, we propose that a spin-triplet f-wave-like pairing with a d-vector perpendicular to the b-axis may be realized in (TMTSF)_2 PF_6 due to (i) a quasi-one-dimensional Fermi surface, (ii) a coexistence of 2k_F charge fluctuations and spin fluctuations, and (iii) an anisotropy in spin fluctuations. Fluctuation-exchange study for the Hubbard model confirms the point (i), while a phenomelogical analysis is given for (ii) and (iii). The proposed pairing is consistent with various experiments.
description: 5 pages, 4 figures, RevTeX, uses epsf.sty and multicol.sty
Additional file 1 of Repetitive transcranial magnetic stimulation ameliorates cognitive deficits in mice with radiation-induced brain injury by attenuating microglial pyroptosis and promoting neurogenesis via BDNF pathway
Creators: name: Qin, Tongzhou
name: Guo, Ling
name: Wang, Xing
name: Zhou, Guiqiang
name: Liu, Liyuan
name: Zhang, Zhaowen
name: Ding, Guirong
Publisher: name: figshare
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mental Health

description: Supplementary Material 1
Symmetric Anderson impurity model with a narrow band
Creators: name: Hofstetter, W.
name: Kehrein, S.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The single channel Anderson impurity model is a standard model for the description of magnetic impurities in metallic systems. Usually, the bandwidth represents the largest energy scale of the problem. In this paper, we analyze the limit of a narrow band, which is relevant for the Mott-Hubbard transition in infinite dimensions. For the symmetric model we discuss two different effects: i) The impurity contribution to the density of states at the Fermi surface always turns out to be negative in such systems. This leads to a new crossover in the thermodynamic quantities that we investigate using the numerical renormalization group. ii) Using the Lanczos method, we calculate the impurity spectral function and demonstrate the breakdown of the skeleton expansion on an intermediate energy scale. Luttinger's theorem, as an example of the local Fermi liquid property of the model, is shown to still be valid.
description: 4 pages RevTeX, 2 eps figures included, final version
Cell Cycle–Specified Fluctuation of Nucleosome Occupancy at Gene Promoters
Creators: name: Lee, Cheol-Koo
name: Lieb, Jason D.
name: Hogan, Gregory J.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2006

description: The packaging of DNA into nucleosomes influences the accessibility of underlying regulatory information. Nucleosome occupancy and positioning are best characterized in the budding yeast Saccharomyces cerevisiae, albeit in asynchronous cell populations or on individual promoters such as PHO5 and GAL1–10. Using FAIRE (formaldehyde-assisted isolation of regulatory elements) and whole-genome microarrays, we examined changes in nucleosome occupancy throughout the mitotic cell cycle in synchronized populations of S. cerevisiae. Perhaps surprisingly, nucleosome occupancy did not exhibit large, global variation between cell cycle phases. However, nucleosome occupancy at the promoters of cell cycle–regulated genes was reduced specifically at the cell cycle phase in which that gene exhibited peak expression, with the notable exception of S-phase genes. We present data that establish FAIRE as a high-throughput method for assaying nucleosome occupancy. For the first time in any system, nucleosome occupancy was mapped genome-wide throughout the cell cycle. Fluctuation of nucleosome occupancy at promoters of most cell cycle–regulated genes provides independent evidence that periodic expression of these genes is controlled mainly at the level of transcription. The promoters of G2/M genes are distinguished from other cell cycle promoters by an unusually low baseline nucleosome occupancy throughout the cell cycle. This observation, coupled with the maintenance throughout the cell cycle of the stereotypic nucleosome occupancy states between coding and non-coding loci, suggests that the largest component of variation in nucleosome occupancy is “hard wired,” perhaps at the level of DNA sequence.
Self-generated magnetic flux in YBa$_2$Cu$_3$O$_{7-x}$ grain boundaries
Creators: name: Mints, R. G.
name: Papiashvili, Ilya
Publisher: name: arXiv
Year: 2000
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Grain boundaries in YBa$_2$Cu$_3$O$_{7-x}$ superconducting films are considered as Josephson junctions with a critical current density $j_c(x)$ alternating along the junction. A self-generated magnetic flux is treated both analytically and numerically for an almost periodic distribution of $j_c(x)$. We obtained a magnetic flux-pattern similar to the one which was recently observed experimentally.
description: 7 pages, 3 figures
Gerris dissortis Drake & Harris 1930
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Gerris
Gerris dissortis

description: Gerris dissortis Drake & Harris, 1930
 Gerris dissortis Drake & Harris, 1930: 145−146 (original description).
One paratype is deposited in NMPC:
PARATYPE (J macr.): ‘Jack River [hw] Ont. [p] / 21. v. [hw] 1927 / G. S. Walley [p] // PARATYPE [p] / Gerris / dissortis / D. & H. [hw, red label] // J [p]’.
 Current status. Valid species: Limnoporus dissortis (Drake & Harris, 1930) (see SMITH 1988b, ANDERSEN & SPENCE 1992, ANDERSEN 1995b, DAMGAARD et al. in press).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 863, DOI: 10.5281/zenodo.5740731
Adaptive Gene Expression Divergence Inferred from Population Genomics
Creators: name: Begun, David J.
name: Holloway, Alisha K.
name: Lawniczak, Mara K. N.
name: Mezey, Jason G.
name: Jones, Corbin D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2007

description: Detailed studies of individual genes have shown that gene expression divergence often results from adaptive evolution of regulatory sequence. Genome-wide analyses, however, have yet to unite patterns of gene expression with polymorphism and divergence to infer population genetic mechanisms underlying expression evolution. Here, we combined genomic expression data—analyzed in a phylogenetic context—with whole genome light-shotgun sequence data from six Drosophila simulans lines and reference sequences from D. melanogaster and D. yakuba. These data allowed us to use molecular population genetics to test for neutral versus adaptive gene expression divergence on a genomic scale. We identified recent and recurrent adaptive evolution along the D. simulans lineage by contrasting sequence polymorphism within D. simulans to divergence from D. melanogaster and D. yakuba. Genes that evolved higher levels of expression in D. simulans have experienced adaptive evolution of the associated 3′ flanking and amino acid sequence. Concomitantly, these genes are also decelerating in their rates of protein evolution, which is in agreement with the finding that highly expressed genes evolve slowly. Interestingly, adaptive evolution in 5′ cis-regulatory regions did not correspond strongly with expression evolution. Our results provide a genomic view of the intimate link between selection acting on a phenotype and associated genic evolution.
Gerris kiritshenkoi Kanyukova 1979
Creators: name: Kment, Petr
name: Kolínová, Zdislava
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Gerridae
Gerris
Gerris kiritshenkoi

description: Gerris kiritshenkoi Kanyukova, 1979
 Gerris kiritshenkoi Kanyukova, 1979: 51–53, Figs 1 –9 (original description).
Two paratypes are deposited in NMPC:
 PARATYPE (J apter.): ‘Алексеевка Лен- / кор. р- н, Талыш [p] / 13 [hw] / ВеЛЬтищеВ [p] IX [hw] 938 [p] [= Alekseevka Lenkor.r-n,Talysh, 13.xi.1938, Vel’tishchev lgt.] // Г. HacИЯку. [hw] [= G. Nasiyaku.] //J [p] // Paratypus [p] Gerris (G.) / kiritshenkoi / Kanyukova E. [hw, red label]’.
 PARATYPE (♀ apter.): ‘Алексеевка Лен- / кор. р- н, Талыш [p] / 13 [hw] / ВеЛЬтищеВ [p] IX [hw] 938 [p] [= Alekseevka Lenkor.r-n,Talysh, 13.xi.1938, Vel’tishchev lgt.] // Г. HacИЯку. [hw] [= G. Nasiyaku.] // ♀ [p] // Paratypus [p] Gerris (G.) / kiritshenkoi / Kanyukova E. [hw, red label]’.
 Current status. Valid species: Gerris (Gerriselloides) kiritshenkoi Kanyukova, 1979 (see ANDERSEN 1994, 1995a,b; KANYUKOVA 2006; DAMGAARD et al. in press).
description: Published as part of Kment, Petr & Kolínová, Zdislava, 2013, Catalogue of type specimens of true bugs (Hemiptera: Heteroptera) deposited in the National Museum, Prague, Czech Republic, pp. 821-890 in Acta Entomologica Musei Nationalis Pragae 53 (2) on page 863, DOI: 10.5281/zenodo.5740731
Coulomb correlation effects in semiconductor quantum dots: The role of dimensionality
Creators: name: Rontani, Massimo
name: Rossi, Fausto
name: Manghi, Franca
name: Molinari, Elisa
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the energy spectra of small three-dimensional (3D) and two-dimensional (2D) semiconductor quantum dots through different theoretical approaches (single-site Hubbard and Hartree-Fock hamiltonians); in the smallest dots we also compare with exact results. We find that purely 2D models often lead to an inadequate description of the Coulomb interaction existing in realistic structures, as a consequence of the overestimated carrier localization. We show that the dimensionality of the dots has a crucial impact on (i) the accuracy of the predicted addition spectra; (ii) the range of validity of approximate theoretical schemes. When applied to realistic 3D geometries, the latter are found to be much more accurate than in the corresponding 2D cases for a large class of quantum dots; the single-site Hubbard hamiltonian is shown to provide a very effective and accurate scheme to describe quantum dot spectra, leading to good agreement with experiments.
description: LaTeX 2.09, RevTeX, 25 pages, 9 Encapsulated Postscript figures. To be published in Physical Review B
Working towards an optimal sampling of the 21 cm signal parameter space
Creators: name: Eames, Evan
name: Doussot, Aristide
name: Semelin, Benoît
Publisher: name: arXiv
Year: 2018
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: With a statistical detection of the 21 cm signal fluctuations from the Epoch of Reionization (EoR) expected in the next few years, there is an interest in developing robust and precise techniques to constrain the underlying astrophysical parameters. Bayesian inference with Markov Chain Monte Carlo, or different types of supervised learning for backward modelling (from signal to parameters) are examples of such techniques. They usually require many instances of forward modelling (from parameters to signal) in sampling the parameters space, either when performing the steps of the Markov Chain or when building a training sample for supervised learning. As forward modelling can be costly (if performed with numerical simulations for example), we should attempt to perform an optimal sampling according to some principle. With this goal in mind, we present an approach based on defining a metric on the space of observables, induced by the manner through which the modelling creates a mapping from the parameter space onto the space of observables. This metric bears a close connection to Jeffreys' prior from information theory. It is used to generate a homogeneous and isotropic sampling of the signal space with two different methods. We show that when the resulting optimized samplings, created with 21cmFAST, are used to train a neural network we obtain a modest reduction of the error on parameter reconstruction of ~10% (compared to a naïve sampling of the same size). Excluding the borders of the parameter space region, the improvement is more substantial, on the order of 30-40%.
description: Submitted to MNRAS
The influence of CH … π interaction on coupling constants across N … H–F hydrogen bond in a substituted T-shaped configuration: a theoretical study
Creators: name: Sotoodeh Bagheri
name: Masoodi, Hamid Reza
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: For studying the influence of CH … π interaction on coupling constants across N … H–F hydrogen bond in a substituted T-shaped configuration, X-benzene⊥(FH … pyrazine … HF) complexes are chosen as a working model. NMR calculations are performed at B3LYP/6-311++G(d,p) and PBE0/6-311++G(d,p) levels. Here, correlations between energetic, geometrical and topological parameters and coupling constants are investigated. The results indicate that direct correlations exist between strength of N … H hydrogen bond, electron-donating power of substituents and |2hJN−F|. Also, |2hJN−F| increases as cooperative and synergistic energies become more negative. These behaviours are reversed for 1hJN−H. Due to contradictory behaviours of FC and PSO terms, an irregular trend is observed for 1JH−F.
Electric dipole spin resonance at shallow donors in quantum wires
Creators: name: Khomitsky, D. V.
name: Lavrukhina, E. A.
name: Sherman, E. Ya.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electric dipole spin resonance is studied theoretically at a shallow donor formed in a nanowire with spin-orbit coupling in a magnetic field. Such system may represent a donor-based qubit. The single discrete energy level of the donor is accompanied by the set of continuum states, which provide a non-trivial interplay for the picture of electric dipole spin resonance driven by an external monochromatic field. Strongly nonlinear dependencies of spin flip time as well as of the coordinate mean values on the electric field amplitude are observed, demonstrating the significance of coupling to the continuum for spin-based qubits manipulation in nanostructures.
description: 8 pages, 4 figures, Supplemental material available at https://journals.aps.org/prb/supplemental/10.1103/PhysRevB.99.014308
The Ideal Editor / European book publishing: A proposal for a new international study programme
Creators: name: Slováková, Andrea
name: Mizerová, Alena
Publisher: name: Zenodo
Year: 2019
Subjects: university press
institutional publishing
open access
academic publishing
scholarly communications
book editing

description: This is a presentation by Andrea Slováková from Nová beseda and Alena Mizerová from Masaryk University Press at the AEUP 2nd Conference in Brno, Czech Republic, 13–14 June 2019 “(Re-)Shaping University Presses and Institutional Publishing”.
Temperature dependence of the interlayer magnetoresistance of quasi-one-dimensional Fermi liquids at the magic angles
Creators: name: McKenzie, Ross H.
name: Moses, Perez
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The interlayer magnetoresistance of a quasi-one-dimensional Fermi liquid is considered for the case of a magnetic field that is rotated within the plane perpendicular to the most-conducting direction. Within semi-classical transport theory dips in the magnetoresistance occur at integer amgic angles only when the electronic dispersion parallel to the chains is nonlinear. If the field direction is fixed at one of the magic angles and the temperature is varied the resulting variation of the scattering rate can lead to a non-monotonic variation of the interlayer magnetoresistance with temperature. Although the model considered here gives a good description of some of the properties of the Bechgaard salts, (TMTSF)2PF6 for pressures less than 8kbar and (TMTSF)2ClO4 it gives a poor description of their properties when the field is parallel to the layers and of the intralayer transport.
description: 10pages, RevTeX + epsf, 3 figures
Oxygenation and hydrologic controls on iron and manganese mass budgets in a drinking-water reservoir
Creators: name: Munger, Zackary W.
name: Cayelan C. Carey
name: Gerling, Alexandra B.
name: Doubek, Jonathan P.
name: Hamre, Kathleen D.
name: McClure, Ryan P.
name: Schreiber, Madeline E.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
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: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Plasma Physics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Munger ZW, Carey CC, Gerling AB, Doubek JP, Hamre KD, McClure RP, Schreiber ME. 2018. Oxygenation and hydrologic controls on iron and manganese mass budgets in a drinking-water reservoir. Lake Reserv Manage. 35:277–291. In seasonally stratified lakes and reservoirs, fluctuating hypolimnetic oxygen and hydrologic conditions in the watershed can influence the retention of metals and their exchange between the sediments and water column. In particular, iron (Fe) and manganese (Mn) cycling at the sediment–water interface can be dynamic in response to variability in the watershed and within the waterbody, which has substantial implications for drinking water quality. We calculated a mass budget for Fe and Mn in a shallow drinking-water reservoir over a 2-year period in which we manipulated the tributary inflow rate and dissolved oxygen (DO) concentrations in the hypolimnion at the reservoir scale. We found that the net Fe and Mn release from the sediments into the water column was suppressed during oxygenation; however, both metals continued to be released from the sediments, even during well-oxygenated conditions. Oxygenation in the hypolimnion had no effect on the net export of metals from the reservoir to downstream. Instead, the overall net export of Fe and Mn during the stratified period was influenced by hydrologic inflows. In summary, we found that manipulating hypolimnetic oxygenation had an important effect on the cycling of Fe and Mn within the hypolimnion, but that the net retention of metals in the reservoir was driven primarily by hydrology.
Correction: Noncanonical DNA Motifs as Transactivation Targets by Wild Type and Mutant p53
Creators: name: Bell, Douglas A.
name: Resnick, Michael A.
name: Inga, Alberto
name: Noureddine, Maher
name: Jordan, Jennifer J.
name: Menendez, Daniel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Sequence-specific binding by the human p53 master regulator is critical to its tumor suppressor activity in response to environmental stresses. p53 binds as a tetramer to two decameric half-sites separated by 0–13 nucleotides (nt), originally defined by the consensus RRRCWWGYYY (n = 0–13) RRRCWWGYYY. To better understand the role of sequence, organization, and level of p53 on transactivation at target response elements (REs) by wild type (WT) and mutant p53, we deconstructed the functional p53 canonical consensus sequence using budding yeast and human cell systems. Contrary to early reports on binding in vitro, small increases in distance between decamer half-sites greatly reduces p53 transactivation, as demonstrated for the natural TIGER RE. This was confirmed with human cell extracts using a newly developed, semi–in vitro microsphere binding assay. These results contrast with the synergistic increase in transactivation from a pair of weak, full-site REs in the MDM2 promoter that are separated by an evolutionary conserved 17 bp spacer. Surprisingly, there can be substantial transactivation at noncanonical ½-(a single decamer) and ¾-sites, some of which were originally classified as biologically relevant canonical consensus sequences including PIDD and Apaf-1. p53 family members p63 and p73 yielded similar results. Efficient transactivation from noncanonical elements requires tetrameric p53, and the presence of the carboxy terminal, non-specific DNA binding domain enhanced transactivation from noncanonical sequences. Our findings demonstrate that RE sequence, organization, and level of p53 can strongly impact p53-mediated transactivation, thereby changing the view of what constitutes a functional p53 target. Importantly, inclusion of ½- and ¾-site REs greatly expands the p53 master regulatory network.