cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
SAMHD1 modulates in vitro proliferation of acute myeloid leukemia-derived THP-1 cells through the PI3K-Akt-p27 axis
Creators: name: Kodigepalli, Karthik M.
name: Bonifati, Serena
name: Tirumuru, Nagaraja
name: Wu, Li
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Sterile alpha motif and HD domain-containing protein 1 (SAMHD1) is a mammalian dNTP hydrolase that acts as a negative regulator in the efficacy of cytarabine treatment against acute myeloid leukemia (AML). However, the role of SAMHD1 in AML development and progression remains unknown. We have reported that SAMHD1 knockout (KO) in the AML-derived THP-1 cells results in enhanced proliferation and reduced apoptosis, but the underlying mechanisms are unclear. Here we show that SAMHD1 KO in THP-1 cells increased PI3K activity and reduced expression of the tumor suppressor PTEN. Pharmacological inhibition of PI3K activity reduced cell proliferation specifically in SAMHD1 KO cells, suggesting that SAMHD1 KO-induced cell proliferation is mediated via enhanced PI3K signaling. However, PI3K inhibition did not significantly affect SAMHD1 KO-reduced apoptosis, implicating the involvement of additional mechanisms. SAMHD1 KO also led to enhanced phosphorylation of p27 at residue T157 and its mis-localization to the cytoplasm. Inhibition of PI3K activity reversed these effects, indicating that SAMHD1 KO-induced changes in p27 phosphorylation and localization is mediated via PI3K-Akt signaling. While SAMHD1 KO significantly enhanced THP-1 cell migration in vitro, SAMHD1 KO attenuated the ability of THP-1 cells to form subcutaneous tumors in xenografted immunodeficient mice. This effect correlated with significantly increased expression of tumor necrosis factor α (TNF-α) in tumors, which may suggest that TNF-α-mediated inflammation could account for the decreased tumorigenicity in vivo. Our findings implicate that SAMHD1 can regulate AML cell proliferation via modulation of the PI3K-Akt-p27 signaling axis, and that SAMHD1 may affect tumorigenicity by downregulating inflammation.
Growth and provenance of a Paleozoic subduction complex in the Broken River Province, Mossman Orogen: evidence from detrital zircon ages
Creators: name: R. A. Henderson
name: C. L. Fergusson
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
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: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology

description: A Paleozoic subduction complex dominates the Mossman Orogen developed at the northern extremity of the Tasmanides, eastern Australia. Its southern part, displayed in the Broken River Province, is characterised by dismembered ocean-plate stratigraphy in which turbidite-dominated packages and widespread tectonic mélange development are characteristic. The Broken River complex is characterised by formations with quartzose sandstone alternating with those largely formed of sandstone of more labile character. The two compositional groups are considered to reflect separate, age-significant sedimentary regimes, but their ages have hitherto been poorly constrained. With the use of 1082 concordant detrital zircon ages from 13 samples we provide age control for the complex and track its sedimentary provenance. Of quartzose units, the Tribute Hills Arenite and Pelican Range Formation are late Cambrian–Early Ordovician, and the Wairuna Formation is Middle to Late Ordovician, in age. The more labile units (Greenvale, Perry Creek and Kangaroo Hills formations) are collectively of late Silurian–mid-Devonian age. Development of the complex spanned some 130 Myr. Continent-derived sediment involved in accretion of much the complex, from mid-Ordovician to mid-Devonian, was largely sourced from a nearby magmatic arc of late Cambrian–Devonian age, now represented by granitoid plutons of the Macrossan and Pama igneous associations. An older far-field Pacific-Gondwana sediment source is characteristic of early-phase (late Cambrian–Early Ordovician) accretion, in common with sedimentary units of this age generally developed in the Tasmanides. We consider the complex to have grown largely by underplating that positioned younger components beneath those that are older, with out-of-sequence thrust interleaving of these components occurring late in the accretionary history. A Late Devonian contractional folding and cleavage development (Tabberabberan orogenesis) is uniformly expressed across the entire complex and reflects an abrupt change in plate engagement with imposition of a compressional stress regime.
Klimakodesmus gravelyi Carl 1932
Creators: name: Hollier, John
name: Stöckli, Eduard
name: Wesener, Thomas
name: Mesibov, Robert
name: Decker, Peter
name: Sierwald, Petra
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Polydesmida
Pyrgodesmidae
Klimakodesmus
Klimakodesmus gravelyi

description: gravelyi fergusoni Carl, 1941b: 619, fig. 74[Aulacobolus].
Trivandrum, im südlichen Travancore. H. Ferguson leg., British Museum. One ♂ and two ♀.
No specimens found in the MHNG collection. The syntypes are in the BMNH.
 A junior synonym of Aulacobolus gravelyi Silvestri, 1916, Pachybolidae
description: Published as part of Hollier, John, Stöckli, Eduard, Wesener, Thomas, Mesibov, Robert, Decker, Peter & Sierwald, Petra, 2020, An annotated list of the millipede (Diplopoda) species described by Johann Carl, pp. 183-240 in Revue suisse de Zoologie 127 (1) on page 205, DOI: 10.35929/RSZ.0015, http://zenodo.org/record/5743454
Quantum Field Theory
Creators: name: Wilczek, Frank
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I discuss the general principles underlying quantum field theory, and attempt to identify its most profound consequences. The deepest of these consequences result from the infinite number of degrees of freedom invoked to implement locality. I mention a few of its most striking successes, both achieved and prospective. Possible limitations of quantum field theory are viewed in the light of its history.
description: LaTeX, 12 pages, 3 figures. Will appear in Centenary issue of Rev. of Mod. Phys., March 1999. Incorporated minor corrections suggested by editor
A topological classification of molecules and chemical reactions with a perplectic structure
Creators: name: Muechler, Lukas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this paper, a topological classification of molecules and their chemical reactions is proposed on a single particle level . We consider zero-dimensional electronic Hamiltonians in a real-space tight-binding basis with spinless time-reversal symmetry and an additional spatial reflection symmetry. The symmetry gives rise to a perplectic structure and suggests a $\mathbb{Z}_2$ invariant in form of a pfaffian, which can be captured by an entanglement cut. We apply our findings to a class of chemical reactions studied by Woodward and Hoffmann, where a reflection symmetry is preserved along a one-dimensional reaction path and argue that the topological classification should contribute to the rate constants of these reactions. More concretely, we find that a reaction takes place experimentally whenever the reactants and products can be adiabatically deformed into each other, while reactions that require a change of topological invariants have not been observed experimentally.
description: updated version, improved introduction
Two new phenolic glycosides with anti-complementary activity from the roots of Sanguisorba officinalis L
Creators: name: Wang, Rongshen
name: Sun, Jinfeng
name: Jin, Mei
name: Ye, Chao
name: Wang, Jiaming
name: Jin, Long
name: Jie, Ying
name: Zhou, Wei
name: Li, Gao
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Sanguisorba officinalis L. is a traditional herbal plant that belongs to the genus Sanguisorba and the family Rosaceae. Two new phenolic glycosides (1–2), ten known phenolics (3–12), and six known monoterpenoid glycosides (13–18) were isolated from the roots of S. officinalis using silica gel column and preparative middle pressure liquid chromatography (MPLC). The chemical structures were elucidated based on extensive spectroscopic experiments, including 1D and 2D NMR as well as HR-ESI-MS, and comparison with those reported in the literature. Compounds 3–5, and 13 were isolated from the Rosaceae family and compound 7 was obtained from the genus Sanguisorba for the first time. Additionally, all compounds were evaluated for their anti-complementary activities against the classical pathway. Furthermore, compounds 1, 5, 9, and 14 showed significant anti-complementary activities with the 50% haemolytic inhibition concentrations (CH50) values of 0.40 ± 0.03, 0.57 ± 0.01, 0.51 ± 0.07, and 0.53 ± 0.05 mM, respectively.
A Maximum Entropy Method of Obtaining Thermodynamic Properties from Quantum Monte Carlo Simulations
Creators: name: Huscroft, Carey
name: Gass, Richard
name: Jarrell, Mark
Publisher: name: arXiv
Year: 1999
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We describe a novel method to obtain thermodynamic properties of quantum systems using Baysian Inference -- Maximum Entropy techniques. The method is applicable to energy values sampled at a discrete set of temperatures from Quantum Monte Carlo Simulations. The internal energy and the specific heat of the system are easily obtained as are errorbars on these quantities. The entropy and the free energy are also obtainable. No assumptions as to the specific functional form of the energy are made. The use of a priori information, such as a sum rule on the entropy, is built into the method. As a non-trivial example of the method, we obtain the specific heat of the three-dimensional Periodic Anderson Model.
description: 8 pages, 3 figures
Stable isotopes of H, C and N in mice bone collagen as a reflection of isotopically controlled food and water intake*
Creators: name: Topalov, Katarina
name: Schimmelmann, Arndt
name: P. David Polly
name: Sauer, Peter E.
name: Viswanathan, Suresh
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Physiology
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: Plant Biology

description: 2H/1H ratios in animal biomass reflect isotopic input from food and water. A 10-week controlled laboratory study raised 48 mice divided in two generations (8 mothers Mus musculus and their offspring). The mice were divided into four groups based on the combination of 2H, 13C, 15N-enriched and non-enriched food and water. Glycine, the most common amino acid in bone collagen, carried the 2H, 13C, 15N-isotopic spike in food. ANOVA data analysis indicated that hydrogen in food accounted for ∼81 % of the hydrogen isotope inventory in collagen whereas drinking water hydrogen contributed ∼17 %. Air humidity contributed an unspecified amount. Additionally, we monitored 13C and 15N-enrichment in bone collagen and found strong linear correlations with the 2H-enrichment. The experiments with food and water indicate two biosynthetic pathways, namely (i) de novo creation of non-essential amino acids using hydrogen from water, and (ii) the integration of essential and non-essential amino acids from food. The lower rate of isotope uptake in mothers’ collagen relative to their offspring indicates incomplete bone collagen turnover after ten weeks. The variance of hydrogen stable isotope ratios within the same cohort may limit its usefulness as a single sample proxy for archaeological or palaeoenvironmental research.
CIV Black Hole Mass Measurements with the Australian Dark Energy Survey (OzDES)
Creators: name: Hoormann, J. K.
name: Martini, P.
name: Davis, T. M.
name: King, A.
name: Lidman, C.
name: Mudd, D.
name: Sharp, R.
name: Sommer, N. E.
name: Tucker, B. E.
name: Yu, Z.
name: Allam, S.
name: Asorey, J.
name: Avila, S.
name: Banerji, M.
name: Brooks, D.
name: Buckley-Geer, E.
name: Burke, D. L.
name: Calcino, J.
name: Rosell, A. Carnero
name: Carollo, D.
name: Kind, M. Carrasco
name: Carretero, J.
name: Castander, F. J.
name: Childress, M.
name: De Vicente, J.
name: Desai, S.
name: Diehl, H. T.
name: Doel, P.
name: Flaugher, B.
name: Fosalba, P.
name: Frieman, J.
name: García-Bellido, J.
name: Gerdes, D. W.
name: Gruen, D.
name: Gutierrez, G.
name: Hartley, W. G.
name: Hinton, S. R.
name: Hollowood, D. L.
name: Honscheid, K.
name: Hoyle, B.
name: James, D. J.
name: Krause, E.
name: Kuehn, K.
name: Kuropatkin, N.
name: Lewis, G. F.
name: Lima, M.
name: Macaulay, E.
name: Maia, M. A. G.
name: Menanteau, F.
name: Miller, C. J.
name: Miquel, R.
name: Möller, A.
name: Plazas, A. A.
name: Romer, A. K.
name: Roodman, A.
name: Sanchez, E.
name: Scarpine, V.
name: Schubnell, M.
name: Serrano, . S.
name: Sevilla-Noarbe, I.
name: Smith, M.
name: Smith, R. C.
name: Soares-Santos, M.
name: Sobreira, F.
name: Suchyta, E.
name: Swann, E.
name: Swanson, M. E. C.
name: Tarle, G.
name: Uddin, S. A.
name: Collaboration, DES
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Black hole mass measurements outside the local universe are critically important to derive the growth of supermassive black holes over cosmic time, and to study the interplay between black hole growth and galaxy evolution. In this paper we present two measurements of supermassive black hole masses from reverberation mapping (RM) of the broad CIV emission line. These measurements are based on multi-year photometry and spectroscopy from the Dark Energy Survey Supernova Program (DES-SN) and the Australian Dark Energy Survey (OzDES), which together constitute the OzDES RM Program. The observed reverberation lag between the DES continuum photometry and the OzDES emission-line fluxes is measured to be $358^{+126}_{-123}$ and $343^{+58}_{-84}$ days for two quasars at redshifts of $1.905$ and $2.593$ respectively. The corresponding masses of the two supermassive black holes are $4.4 \times 10^{9}$ and $3.3 \times 10^{9}$ M$_\odot$, which are among the highest-redshift and highest-mass black holes measured to date with RM studies. We use these new measurements to better determine the CIV radius$-$luminosity relationship for high-luminosity quasars, which is fundamental to many quasar black hole mass estimates and demographic studies.
description: 15 pages, 12 figures Updated with minor revisions to match version accepted for publication by MNRAS. Results remain the same
Dynamical Supersymmetric Inflation
Creators: name: Kinney, William H.
name: Riotto, Antonio
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We propose a new class of inflationary models in which the scalar field potential governing inflation is generated by the same non-perturbative gauge dynamics that may lead to supersymmetry breaking. Such models satisfy constraints from cosmic microwave background measurements for natural values of the fundamental parameters in the theory. In addition, they have two particularly interesting characteristics: a ``blue'' spectrum of scalar perturbations, and an upper bound on the total amount of inflation possible.
description: 17 pages, RevTeX, 1 figure in epsf
Comparing nilotinib with dasatinib as second-line therapies in patients with chronic myelogenous leukemia resistant or intolerant to imatinib – a retrospective chart review analysis
Creators: name: Griffin, James D.
name: Guerin, Annie
name: Chen, Lei
name: Macalalad, Alexander R.
name: Luo, Jiayuan
name: Ionescu-Ittu, Raluca
name: Wu, Eric Qiong
Publisher: name: Taylor & Francis
Year: 2020
Subjects: Medicine
Pharmacology
Biotechnology
Cancer
Hematology

description: This study compared progression, progression-free survival (PFS), overall survival (OS), and treatment changes among chronic myelogenous leukemia patients in chronic phase (CML-CP) receiving nilotinib or dasatinib as second-line therapy. Information on CML-CP patients switched from imatinib to nilotinib or dasatinib as second-line therapy was collected retrospectively from 122 US hematologists and oncologists through an online medical chart review. Progression, PFS, and OS were compared using multivariate Cox proportional hazard models, and treatment changes using chi-square tests. Of 597 imatinib resistant or intolerant patients, 301 initiated nilotinib and 296 dasatinib as second-line therapy. Nilotinib was associated with a lower risk of progression (hazard ratio [HR] = 0.27; p = 0.021) and longer PFS (HR = 0.48; p = 0.030) than dasatinib, with a median follow-up time of 11 months for nilotinib and 10 months for dasatinib. Nilotinib patients had a lower estimated hazard of mortality than dasatinib patients, though not statistically significant (HR = 0.46; p = 0.067). When treatment changes were classified by the physicians’ justifications, fewer nilotinib patients had treatment changes due to ineffectiveness (2.0% vs. 5.1%, p = 0.041) or drug holidays due to intolerance (0.0% vs. 1.7%, p = 0.024) than dasatinib patients. Among CML-CP patients in this retrospective chart review who switched from imatinib to either nilotinib or dasatinib, nilotinib was associated with a significantly lower risk of progression and longer PFS than dasatinib. Nilotinib patients were also less likely than dasatinib patients to subsequently have treatment changes due to ineffectiveness or drug holidays due to intolerance. These findings could be subject to unobserved confounders.
Enhanced quantized current driven by surface acoustic waves
Creators: name: Ebbecke, J.
name: Bastian, G.
name: Blöcker, M.
name: Pierz, K.
name: Ahlers, F. J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present the experimental realization of different approaches to increase the amount of quantized current which is driven by surface acoustic waves through split gate structures in a two dimensional electron gas. Samples with driving frequencies of up to 4.7 GHz have been fabricated without a deterioration of the precision of the current steps, and a parallelization of two channels with correspondingly doubled current values have been achieved. We discuss theoretical and technological limitations of these approaches for metrological applications as well as for quantum logics.
description: 3pages, 4eps-figures
Hybrid master equation for calorimetric measurements
Creators: name: Donvil, Brecht
name: Muratore-Ginanneschi, Paolo
name: Pekola, Jukka P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ongoing experimental activity aims at calorimetric measurements of thermodynamic indicators of quantum integrated systems. We study a model of a driven qubit in contact with a finite-size thermal electron reservoir. The temperature of the reservoir changes due to energy exchanges with the qubit and an infinite-size phonon bath. Under the assumption of weak coupling and weak driving, we model the evolution of the qubit-electron-temperature as a hybrid master equation for the density matrix of the qubit at different temperatures of the calorimeter. We compare the temperature evolution with an earlier treatment of the qubit-electron model, where the dynamics were modelled by a Floquet master equation under the assumption of drive intensity much larger than the qubit-electron coupling squared. We numerically and analytically inquire the predictions of the two mathematical models of dynamics in the weak-drive parametric region. We numerically determine the parametric regions where the two models of dynamics give distinct temperature predictions and those where their predictions match.
description: 11 pages, 4 figures
Additional file 1 of Cross species comparison of C/EBPα and PPARγ profiles in mouse and human adipocytes reveals interdependent retention of binding sites
Creators: name: Schmidt, Søren F
name: Jørgensen, Mette
name: Chen, Yun
name: Nielsen, Ronni
name: Sandelin, Albin
name: Mandrup, Susanne
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1:Fig. S1+2.pdf. (PDF 649 KB)
Reducing vortex density in superconductors using the ratchet effect
Creators: name: Lee, Choongseop
name: Janko, Boldizsar
name: Derenyi, Imre
name: Barabasi, Albert-Laszlo
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A serious obstacle that impedes the application of low and high temperature superconductor (SC) devices is the presence of trapped flux. Flux lines or vortices are induced by fields as small as the Earth's magnetic field. Once present, vortices dissipate energy and generate internal noise, limiting the operation of numerous superconducting devices. Methods used to overcome this difficulty include the pinning of vortices by the incorporation of impurities and defects, the construction of flux dams, slots and holes and magnetic shields which block the penetration of new flux lines in the bulk of the SC or reduce the magnetic field in the immediate vicinity of the superconducting device. Naturally, the most desirable would be to remove the vortices from the bulk of the SC. There is no known phenomenon, however, that could form the basis for such a process. Here we show that the application of an ac current to a SC that is patterned with an asymmetric pinning potential can induce vortex motion whose direction is determined only by the asymmetry of the pattern. The mechanism responsible for this phenomenon is the so called ratchet effect, and its working principle applies to both low and high temperature SCs. As a first step here we demonstrate that with an appropriate choice of the pinning potential the ratchet effect can be used to remove vortices from low temperature SCs in the parameter range required for various applications.
description: 7 pages, 4 figures, Nature (in press)
Aulacobolus gravelyi Silvestri 1916
Creators: name: Hollier, John
name: Stöckli, Eduard
name: Wesener, Thomas
name: Mesibov, Robert
name: Decker, Peter
name: Sierwald, Petra
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirobolida
Pachybolidae
Aulacobolus
Aulacobolus gravelyi

description: gravelyi septrionalis Carl, 1941b: 619-620, fig. 75 [Aulacobolus].
Anaimalais: Attakatti und Umgebung, 1000-1200 m. Unspecified number of ♂ and ♀.
The MHNG collection contains 16 specimens in alcohol (MHNG-ARTO-14432). The specimens are accompanied by four small vials, two containing gonopods and two containing partially dissected heads and anterior segments. The pencil-written data labels have “Attakatti beim Bungalow, unter Borke 1.III.27 ” and “Nebenfluss des Aligar, 2 Meilen ob Attikatti 24.II, Unter faulen Stämmen” written on them, indicating that the specimens are syntypes.
 A junior synonym of Aulacobolus gravelyi Silvestri, 1916, Pachybolidae
description: Published as part of Hollier, John, Stöckli, Eduard, Wesener, Thomas, Mesibov, Robert, Decker, Peter & Sierwald, Petra, 2020, An annotated list of the millipede (Diplopoda) species described by Johann Carl, pp. 183-240 in Revue suisse de Zoologie 127 (1) on page 205, DOI: 10.35929/RSZ.0015, http://zenodo.org/record/5743454
Supersymmetric Baryogenesis and Flavor Physics
Creators: name: Worah, Mihir P.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the flavor physics implications of baryogenesis in the Minimal Supersymmetric Standard Model. Enhanced $B-\bar B$ mixing and $b \to s γ$ rates are generic to all scenarios. Depending on the origin of the CP violating phase responsible for baryogenesis there could be a large neutron electric dipole moment, large CP violating $D-\bar D$ mixing or CP violation in top quark production. We discuss how the combination of these measurements with the requirement of baryogenesis shed light on the MSSM parameter space and the source of CP violation.
description: PRL version. Suppression factor explicitly identified below Eq. 5. More references added. Minor cosmetic changes in discussions. All results unchanged
Quantum interference in transport through almost symmetric double quantum dots
Creators: name: Li, Zeng-Zhao
name: Leijnse, Martin
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: We theoretically investigate transport signatures of quantum interference in highly symmetric double quantum dots in a parallel geometry and demonstrate that extremely weak symmetry-breaking effects can have a dramatic influence on the current. Our calculations are based on a master equation where quantum interference enters as non-diagonal elements of the density matrix of the double quantum dots. We also show that many results have a physically intuitive meaning when recasting our equations as Bloch-like equations for a pseudo spin associated with the dot occupation. In the perfectly symmetric configuration with equal tunnel couplings and orbital energies of both dots, there is no unique stationary state density matrix. Interestingly, however, adding arbitrarily small symmetry-breaking terms to the tunnel couplings or orbital energies stabilizes a stationary state either with or without quantum interference, depending on the competition between these two perturbations. The different solutions can correspond to very different current levels. Therefore, if the orbital energies and/or tunnel couplings are controlled by, e.g., electrostatic gating, the double quantum dot can act as an exceptionally sensitive electric switch.
description: 12 pages, 6 figures
On Relation between String Theory and Multidimensional Cosmology
Creators: name: Zhuk, A.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is shown that a transition from a multidimensional cosmological model with one internal space of the dimension d_1 to the effective tree-level bosonic string corresponds to an infinite number of the internal dimensions: d_1 -> infinity.
description: latex, to appear in Gravitation and Cosmology
Confinement from a massive scalar in QCD
Creators: name: Dick, Rainer
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A model is introduced with a massive scalar coupling to the Yang--Mills term in four--dimensional gauge theory. It is shown that the resulting potential of colour sources consists of a short range Coulomb interaction and a long range confining part. Far away from the source the scalar vanishes $\sim r^{-1}$ while the potential diverges linearly $\sim r$. Up to an $N_c$--dependent factor of order 1 the tension parameter in the model is $gmf$, where $m$ denotes the mass of the scalar and $f$ is a coupling scale entering the scalar--gluon coupling.
description: LaTeX, 5 pages
Lankabolus greeni Carl 1941
Creators: name: Hollier, John
name: Stöckli, Eduard
name: Wesener, Thomas
name: Mesibov, Robert
name: Decker, Peter
name: Sierwald, Petra
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirobolida
Trigoniulidae
Lankabolus
Lankabolus greeni

description: greeni Carl, 1941b: 602-603, figs 52-56 [Diopsiulus (Plusiochaeturus)].
Ceylon: Pundloya, 1000 m. British Museum (Green leg.). One ♂ and one ♀.
No specimens found in the MHNG collection. The syntypes are in the BMNH.
 Stemmiulus greeni Carl, 1941, Stemmiulidae
description: Published as part of Hollier, John, Stöckli, Eduard, Wesener, Thomas, Mesibov, Robert, Decker, Peter & Sierwald, Petra, 2020, An annotated list of the millipede (Diplopoda) species described by Johann Carl, pp. 183-240 in Revue suisse de Zoologie 127 (1) on page 205, DOI: 10.35929/RSZ.0015, http://zenodo.org/record/5743454
Projekterfolg im Maschinenbau
Ein Beitrag zur ganzheitlichen Bewertung von Produktentwicklungsprojekten
Creators: name: Albert, Matthias
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: Projekterfolg
subject: Projekterfolgsbewertung
subject: Projektmanagement
subject: Produktentwicklungsprojekte
subject: Maschinenbau
subject: 600
subject: 650
subject: Projektmanagement
subject: Erfolg
subject: Projektbewertung
subject: Produktentwicklung
subject: Maschinenbau

description: Zugleich: Dissertation, Universität Kassel, 2020
Dynamics of a Space-Time Crystal in an Atomic Bose-Einstein Condensate
Creators: name: Liao, Lei
name: Smits, Jasper
name: van der Straten, Peter
name: Stoof, Henk
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A space-time crystal has recently been observed in a superfluid Bose gas. Here we construct a variational model that allows us to describe from first principles the coupling between the radial breathing mode and the higher-order axial modes that underlies the observation of the space-time crystal. By comparing with numerical simulations we verify the validity of our variational Ansatz. From the model we determine the requirements for the observation of the space-time crystal and the Ising-like nature of the symmetry breaking involved. Also, we find the onset and growth rate of the space-time crystal, which can be compared to experiments.
description: 10 pages, 6 figures, submission to Physical Review A
The cave bear’s hibernation: reconstructing the physiology and behaviour of an extinct animal
Creators: name: Grandal-D’Anglade, Aurora
name: Pérez-Rama, Marta
name: García-Vázquez, Ana
name: González-Fortes, Gloria María
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: When studying an extinct species such as the cave bear (Ursus spelaeus ROSENMÜLLER 1794), it is possible to apply a variety of molecular biology techniques such as the study of stable isotopes or mitochondrial DNA (mDNA) to infer patterns of behaviour or physiology that would otherwise remain concealed. Throughout Europe and along time, differences in the isotopic values (δ13C and δ15N) of cave bears arise from environmental differences and the Pleistocene climatic evolution. The climate determines the hibernation length, during which the cave bears undergo a particular physiology that can be related to an increase in δ15N during climate cooling. In order to verify whether hibernation affected the isotopic values, we compared cave bears in different ontogenetic stages. The results show that perinatal values reflect the values for mothers during hibernation, while juveniles show differences in maternal investment. A previous study in the literature based on complete mitochondrial DNA sequences of several individuals collected from closely situated caves showed that each cave housed, almost exclusively, a single lineage of haplotypes. This pattern suggests extreme fidelity to the birth site, or homing behaviour, and that cave bears formed stable maternal social groups, at least for the purpose of hibernation. Studies of this type offer unexpected data on the palaeobiology of this extinct animal.
GRAMPAL: A Morphological Processor for Spanish implemented in Prolog
Creators: name: Moreno, Antonio
name: Goñi, José M.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: A model for the full treatment of Spanish inflection for verbs, nouns and adjectives is presented. This model is based on feature unification and it relies upon a lexicon of allomorphs both for stems and morphemes. Word forms are built by the concatenation of allomorphs by means of special contextual features. We make use of standard Definite Clause Grammars (DCG) included in most Prolog implementations, instead of the typical finite-state approach. This allows us to take advantage of the declarativity and bidirectionality of Logic Programming for NLP. The most salient feature of this approach is simplicity: A really straightforward rule and lexical components. We have developed a very simple model for complex phenomena. Declarativity, bidirectionality, consistency and completeness of the model are discussed: all and only correct word forms are analysed or generated, even alternative ones and gaps in paradigms are preserved. A Prolog implementation has been developed for both analysis and generation of Spanish word forms. It consists of only six DCG rules, because our {\em lexicalist\/} approach --i.e. most information is in the dictionary. Although it is quite efficient, the current implementation could be improved for analysis by using the non logical features of Prolog, especially in word segmentation and dictionary access.
description: 11 pages
Identification of physical processes via combined data-driven and data-assimilation methods
Creators: name: Chang, Haibin
name: Zhang, Dongxiao
Publisher: name: arXiv
Year: 2018
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: With the advent of modern data collection and storage technologies, data-driven approaches have been developed for discovering the governing partial differential equations (PDE) of physical problems. However, in the extant works the model parameters in the equations are either assumed to be known or have a linear dependency. Therefore, most of the realistic physical processes cannot be identified with the current data-driven PDE discovery approaches. In this study, an innovative framework is developed that combines data-driven and data-assimilation methods for simultaneously identifying physical processes and inferring model parameters. Spatiotemporal measurement data are first divided into a training data set and a testing data set. Using the training data set, a data-driven method is developed to learn the governing equation of the considered physical problem by identifying the occurred (or dominated) processes and selecting the proper empirical model. Through introducing a prediction error of the learned governing equation for the testing data set, a data-assimilation method is devised to estimate the uncertain model parameters of the selected empirical model. For the contaminant transport problem investigated, the results demonstrate that the proposed method can adequately identify the considered physical processes via concurrently discovering the corresponding governing equations and inferring uncertain parameters of nonlinear models, even in the presence of measurement errors. This work helps to broaden the applicable area of the research of data driven discovery of governing equations of physical problems.
Hall noise and transverse freezing in driven vortex lattices
Creators: name: Kolton, Alejandro B.
name: Dominguez, Daniel
name: Gronbech-Jensen, Niels
Publisher: name: arXiv
Year: 1999
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study driven vortices lattices in superconducting thin films. Above the critical force $F_c$ we find two dynamical phase transitions at $F_p$ and $F_t$, which could be observed in simultaneous noise measurements of the longitudinal and the Hall voltage. At $F_p$ there is a transition from plastic flow to smectic flow where the voltage noise is isotropic (Hall noise = longitudinal noise) and there is a peak in the differential resistance. At $F_t$ there is a sharp transition to a frozen transverse solid where the Hall noise falls down abruptly and vortex motion is localized in the transverse direction.
description: 4 pages, 3 figures
title: Führen in der COVID-19-Pandemie
Creators: name: Bansmann, Lisa-Marie
Publisher: name: Hochschule Hannover
Year: 2021
Subjects: subject: 650 Management
subject: 150 Psychologie

description: Führung von Mitarbeitern ist eine zentrale Aufgabe in jedem Unternehmen, die permanent verschiedenen organisatorischen und gesellschaftlichen Veränderungen unterliegt. Im Jahr 2020 löste die COVID-19-Pandemie eine weitreichende Veränderung in der Gesellschaft, der Volkswirtschaft und in den Unternehmen aus. Neben ökonomischen Verlusten führte die Pandemie in vielen Unternehmen zu einer unvermittelten Einführung der flächendeckenden Arbeit im Home-Office. In dieser Arbeit wird untersucht, welche Herausforderungen die Pandemie an die Mitarbeiterführung stellt und welche Positiv- und Negativfaktoren von Führung in der COVID-19-Pandemie in einem ausgewählten Unternehmen identifiziert werden können. Im Rahmen von qualitativen Einzelinterviews mit 16 Führungskräften aus dem Unternehmen wurden insgesamt 51 positive und negative kritische Führungsereignisse mithilfe der Methode der kritischen Ereignisse identifiziert. Aus den 51 kritischen Führungsereignissen konnten 11 Positivfaktoren und 14 Negativfaktoren von Führung abgeleitet werden. Die Ergebnisse dieser Untersuchung zeigen, dass die Kommunikation über neue Informations- und Kommunikationsmittel sowie der mangelnde informelle Austausch wesentliche Herausforderungen für die erfolgreiche Führung von Mitarbeitern im Home-Office darstellen. Insbesondere durch Positivfaktoren wie der Durchführung kurzer, regelmäßiger virtueller Zusammentreffen aller Teammitglieder und einer zielführenden Nutzung neuer technischer Möglichkeiten kann den Besonderheiten der Pandemie und der Führung von Mitarbeitern im Home-Office begegnet werden.
description: Leading employees is a central task in every organisation, which is constantly affected by various organisational and societal changes. In 2020, the COVID 19 pandemic caused a major change in society, the national economy as well as in companies. In addition to economic losses, the pandemic led to an immediate implementation of extensive home office work in many companies. This paper examines the challenges the pandemic poses to leadership and the positive and negative factors of leadership in the COVID 19 crisis in a selected company. In qualitative individual interviews with 16 managers of the company, 51 positive and negative critical incidents of leadership were collected by using the critical incident technique. 11 positive and 14 negative leadership factors were identified from the collected critical incidents. Results of this study indicate that communication via new information and communication tools as well as the lack of informal exchange represent major challenges for leadership. These particularities can be countered by using positive factors such as the implementation of short, frequent virtual meetings of all team members and the purposeful use of new technical possibilities.
description: Personalpsychologie; 10
Fluctuations of the vacuum energy density of quantum fields in curved spacetime via generalized zeta functions
Creators: name: Phillips, Nicholas G.
name: Hu, B. L.
Publisher: name: arXiv
Year: 1996
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For quantum fields on a curved spacetime with an Euclidean section, we derive a general expression for the stress energy tensor two-point function in terms of the effective action. The renormalized two-point function is given in terms of the second variation of the Mellin transform of the trace of the heat kernel for the quantum fields. For systems for which a spectral decomposition of the wave opearator is possible, we give an exact expression for this two-point function. Explicit examples of the variance to the mean ratio $Δ' = (-^2)/(^2)$ of the vacuum energy density $ρ$ of a massless scalar field are computed for the spatial topologies of $R^d\times S^1$ and $S^3$, with results of $Δ'(R^d\times S^1) =(d+1)(d+2)/2$, and $Δ'(S^3) = 111$ respectively. The large variance signifies the importance of quantum fluctuations and has important implications for the validity of semiclassical gravity theories at sub-Planckian scales. The method presented here can facilitate the calculation of stress-energy fluctuations for quantum fields useful for the analysis of fluctuation effects and critical phenomena in problems ranging from atom optics and mesoscopic physics to early universe and black hole physics.
description: Uses revtex
Few-body quantum method in a $d$-dimensional space
Creators: name: Garrido, E.
name: Jensen, A. S.
name: Álvarez-Rodríguez, R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Nuclear Theory (nucl-th)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: In this work we investigate the continuous confinement of quantum systems from three to two dimensions. Two different methods will be used and related. In the first one the confinement is achieved by putting the system under the effect of an external field. This method is conceptually simple, although, due to the presence of the external field, its numerical implementation can become rather cumbersome, especially when the system is highly confined. In the second method the external field is not used, and it simply considers the spatial dimension $d$ as a parameter that changes continuously between the ordinary integer values. In this way the numerical effort is absorbed in a modified strength of the centrifugal barrier. Then the technique required to obtain the wave function of the confined system is precisely the same as needed in ordinary three dimensional calculations without any confinement potential. The case of a two-body system squeezed from three to two dimensions is considered, and used to provide a translation between all the quantities in the two methods. Finally we point out perspectives for applications on more particles, different spatial dimensions, and other confinement potentials.
description: To be published in Physics Letters A
Dammarane-type saponins from Gynostemma pentaphyllum and their cytotoxicities
Creators: name: Cui, Wei-Ye
name: Jin, Yulian
name: Liu, Hui
name: Zu, Ma-Li
name: Zhai, Xin-Fang
name: Yang, Ce
name: Gu, Yu-Long
name: Cheng, Yong
name: Piao, Xiang-Lan
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Heat-processed Gynostemma pentaphyllum has shown strong activity against human lung carcinoma A549 cells. In this study, two dammarane-type saponins together with two known compounds were isolated from the ethanol extract of the heat-processed leaves of G. pentaphyllum. They were identified as 2α,3β,12β-trihydroxydammar-20(22),24-diene-3-O-β-D-glucopyranoside (1, namely damulin E), 2α,3β,12β-trihydroxydammar-20,24-diene-3-O-β-D-glucopyranoside (2, namely damulin F), damulin A (3) and damulin B (4), respectively, using NMR and mass spectra. Damulin E and damulin F showed moderate activity against A549, H1299, T24, SH-SY5Y and K562 cell lines in vitro using CCK-8 assay.
Modeling and Simulation of Crystallization Processes in Polymer Melt Flows
Creators: name: Descher, Stefan
Publisher: name: Universität Kassel
Year: 2020
Subjects: subject: non-isothermal crystallization
subject: viscoelastic fluids
subject: CFD
subject: rheology
subject: profile extrusion
subject: injection molding
subject: 600
subject: Kristallisation
subject: Viskoelastizität
subject: Numerische Strömungssimulation
subject: Rheologie
subject: Profilextrusion
subject: Spritzgießen

description: Zugleich: Dissertation, Universität Kassel, 2020
Evidence for the immobile bipolaron formation in the paramagnetic state of the magnetoresistive manganites
Creators: name: Zhao, G. M.
name: Wang, Y. S.
name: Kang, D. J.
name: Prellier, W.
name: Rajeswari, M.
name: Keller, H.
name: Venkatesan, T.
name: Chu, C. W.
name: Greene, R. L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recent research suggests that the charge carriers in the paramagnetic state of the magnetoresistive manganites are small polarons. Here we report studies of the oxygen-isotope effects on the intrinsic resistivity and thermoelectric power in several ferromagnetic manganites. The precise measurements of these isotope effects allow us to make a quantitative data analysis. Our results do not support a simple small-polaron model, but rather provide compelling evidence for the presence of small immobile bipolarons, i.e., pairs of small polarons. Since the bipolarons in the manganites are immobile, the present result alone appears not to give a positive support to the bipolaronic superconductivity theory for the copper-based perovskites.
description: 6 pages, 5 figures, monor corrections