cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Arbeit statt Sozialhilfe? : der Einfluss von Sozial- und Arbeitsmarktpolitik auf die Situation von allein erziehenden Müttern in Deutschland und Schweden
Creators: name: Rohde, Wiebke
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Alleinerziehende
subject: Schweden
subject: Wohlfahrtsstaatsvergleich
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Charmed hadron spectroscopy on the lattice for $N_f=2+1$ flavours
Creators: name: Bali, Gunnar
name: Collins, Sara
name: Pérez-Rubio, Paula
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study the spectra of charmonia, charmed mesons, singly and doubly charmed baryons using Lattice QCD, with 2+1 flavours of fermions. In the case of mesons, we include higher spin states, while for baryons, both positive and negative parity channels were investigated. By means of the variational method, we were able to extract a clean signal from the correlation functions and information about the excited states.
description: 5 pages, 4 figures, proceedings of the FAIRNESS 2012 workshop held in Hersonissos, Crete, Greece, 3-8 September 2012, updated summary plots and references
Separating Algorithmic Thinking and Programming
Creators: name: Chandoo, Maurice
Publisher: name: Hagen : FernUniversität Hagen
Year: 2021
Subjects: subject: trace-based programming
subject: model of computation
subject: notional machine
subject: programming education
subject: Maschinenmodell
subject: Algorithmisches Denken
subject: Programmierung
subject: Spuren
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: We describe an approach to teaching algorithmic thinking and programming and the first experiences that we made with it in practice. The idea is to present computational problems as a certain kind of game that the learner can play in order for them to develop a concrete idea of what constitutes an algorithm. The purpose of this is to emphasize that one can think of algorithms independently of a particular programming language. For the programming part a mini language called machine programs and a method to construct such programs from traces is described.
Magic shotguns versus magic bullets: Selectively non-selective drugs for mood disorders and schizophrenia
Creators: name: Sheffler, Douglas J.
name: Kroeze, Wesley K.
name: Roth, Bryan L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2004

description: Most common central nervous system disorders — such as depression, bipolar disorder and schizophrenia — seem to be polygenic in origin, and the most effective medications have exceedingly complex pharmacologies. Attempts to develop more effective treatments for diseases such as schizophrenia and depression by discovering drugs selective for single molecular targets (that is, 'magic bullets') have, not surprisingly, been largely unsuccessful. Here we propose that designing selectively non-selective drugs (that is, 'magic shotguns') that interact with several molecular targets will lead to new and more effective medications for a variety of central nervous system disorders.
Elliptic K3 surfaces and their moduli: dynamics, geometry and arithmetic
Creators: name: Mezzedimi, Giacomo
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: K3 surfaces
subject: elliptic fibrations
subject: Lattices
subject: dynamical systems
subject: automorphisms
subject: moduli spaces
subject: Kodaira dimension
subject: Enriques surfaces
subject: Hilbert property
subject: rational points
subject: K3-Flächen
subject: elliptische Fibrationen
subject: dynamische Systeme
subject: Automorphismen
subject: Modulräume
subject: Kodaira-Dimension
subject: Enriques-Flächen
subject: rationale Punkte
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This thesis deals with K3 surfaces and their moduli spaces. In the first part we identify a class of complex K3 surfaces, called of zero entropy, with a particularly simple (but infinite) automorphism group, naturally arising from complex dynamics. We provide a lattice-theoretical classification of their N\'eron-Severi lattices. In the second part we move to the study of the Kodaira dimension of the moduli spaces of elliptic K3 surfaces of Picard rank $3$. We show that almost all of them are of general type, by using the low-weight cusp form trick developed by Gritsenko, Hulek and Sankaran. Moreover, we prove that many of the remaining moduli spaces are unirational, by providing explicit projective models of the corresponding K3 surfaces. In the final part, we investigate the set of rational points on K3 and Enriques surfaces over number fields. We show that all Enriques surfaces over number fields satisfy (a weak version of) the potential Hilbert property, thus proving that, after a field extension, the rational points on their K3 cover are dense and do not come from finite covers.
title: Urgeschichte des badischen Landes, bis zu Ende des siebenten Jahrhunderts. Von F. J. Mone. karlsruhe 1845
Creators: name: Jahn, Albert
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Urgeschichte des badischen Landes(,) bis zu Ende des siebenten Jahrhunderts. Von F. J. Mone, Direktor des Landesarchivs zu Karlsruhe. 2 Bde. 8, mit Holzschnitten. Karlsruhe, C. Macklot. 1845. gr. 8. 2 1/2 rthlr.
2023 OpenFF Annual Meeting - Tuning Potential Functions to Host-Guest Binding Data A case study with implicit solvent
Creators: name: Setiadi, Jeffry
Publisher: name: Zenodo
Year: 2023

description: Tuning Potential Functions to Host-Guest Binding Data A case study with implicit solvent Jeffry Setiadi, Gilson Lab UCSD This is a presentation from the second day of the 2023 OMSF Symposium in Boston, which ran as a hybrid in-person/virtual event. https://youtu.be/nlqLBqnm_L4
description: Research supported by NIH R01 GM132386
The Founding of Carolina Planning: A Modest Proposal
Creators: name: Corum, Lee L.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1995

description: The Department of City and Regional Planning (DCRP) at the University of North Carolina (UNC) at Chapel Hill is celebrating the twentieth anniversary of Carolina Planning. The students of DCRP began what has become the twenty-year tradition of Carolina Planning with the publication of the first issue during the summer of 1975. This article reviews the efforts of DCRP students, faculty, staff, and alumni who have contributed to the founding and success of Carolina Planning. The idea for Carolina Planning was developed by Nancy Grden. Jim Miller, and myself, three UNC planning graduate students, during our 1974 summer internships in Washington, DC. Fresh from the completion of our first year of graduate planning education, excited by our first contact with professional planning practice, and undeterred by practical considerations, we undertook a modest endeavor. We began to discuss and develop a proposal for a student-run journal addressing public policy issues in the planning field.
XMM-Newton observations of the Galactic Centre Region - II: The soft thermal emission
Creators: name: Heard, V.
name: Warwick, R. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We have extended our earlier study (Heard & Warwick 2013, Paper I) of the X-ray emission emanating from the central 100 pc x 100 pc region of our Galaxy to an investigation of several features prominent in the soft X-ray (2-4.5 keV) band. We focus on three specific structures: a putative bipolar outflow from the vicinity of Sgr A*; a high surface brightness region located roughly 12 arcmin to the north-east of Sgr A*; and a lower surface-brightness extended loop feature seen to the south of Sgr A*. We show that all three structures are thermal in nature and have similar temperatures (kT ~ 1 keV). The inferred X-ray luminosities lie in the range (2 - 10) x 10^34 erg s^-1. In the case of the bipolar feature we suggest that the hot plasma is produced by the shock-heating of the winds from massive stars within the Central Cluster, possibly collimated by the Circumnuclear Disc. Alternatively the outflow may be driven by outbursts on Sgr A*, which follow tidal disruption events occurring at a rate of roughly 1 every 4000 yr. The north-east enhancement is centred on a candidate PWN which has a relatively hard non-thermal X-ray spectrum. We suggest that the coincident soft-thermal emission traces the core of a new thermal-composite supernova remnant, designated as SNR G0.13-0.12. There is no clear evidence for an associated radio shell but such a feature may be masked by the bright emission of the nearby Radio Arc and other filamentary structures. SNR G0.13-0.12 is very likely interacting with the nearby molecular cloud, G0.11-0.11, and linked to the Fermi source, 2FGL J1746.4-2851c. Finally we explore a previous suggestion that the elliptically-shaped X-ray loop to the south of Sgr A*, of maximum extent ~45 pc, represents the shell of a superbubble located in the GC region. Although plausible, the interpretation of this feature in terms a coherent physical structure awaits confirmation.
description: 17 pages, 6 figures, accepted for publication in MNRAS
Transport signatures of pseudo-magnetic Landau levels in strained graphene ribbons
Creators: name: Gradinar, Diana A.
name: Mucha-Kruczyński, Marcin
name: Schomerus, Henning
name: Fal'ko, Vladimir I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In inhomogeneously strained graphene, low-energy electrons experience a valley-antisymmetric pseudo-magnetic field which leads to the formation of localized states at the edge between the valence and conduction bands, understood in terms of peculiar n=0 pseudo-magnetic Landau levels. Here we show that such states can manifest themselves as an isolated quadruplet of low-energy conductance resonances in a suspended stretched graphene ribbon, where clamping by the metallic contacts results in a strong inhomogeneity of strain near the ribbon ends.
description: 4 pages, 3 figures
Measuring the default risk of sovereign debt from the perspective of network
Creators: name: Chuang, Hongwei
name: Ho, Hwai-Chung
Publisher: name: arXiv
Year: 2013
Subjects: subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business

description: Recently, there has been a growing interest in network research, especially in these fields of biology, computer science, and sociology. It is natural to address complex financial issues such as the European sovereign debt crisis from the perspective of network. In this article, we construct a network model according to the debt--credit relations instead of using the conventional methodology to measure the default risk. Based on the model, a risk index is examined using the quarterly report of consolidated foreign claims from the Bank for International Settlements (BIS) and debt/GDP ratios among these reporting countries. The empirical results show that this index can help the regulators and practitioners not only to determine the status of interconnectivity but also to point out the degree of the sovereign debt default risk. Our approach sheds new light on the investigation of quantifying the systemic risk.
Dynamical Exchange Interaction From Time-Dependent Spin Density Functional Theory
Creators: name: Stamenova, Maria
name: Sanvito, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report on {\it ab initio} time-dependent spin dynamics simulations for a two-center magnetic molecular complex based on time-dependent non-collinear spin density functional theory. In particular, we discuss how the dynamical behavior of the {\it ab initio} spin-density in the time-domain can be mapped onto a model Hamiltonian based on the classical Heisenberg spin-spin interaction $J\vcr{S}_1\cdot \vcr{S}_2$. By analyzing individual localized-spin trajectories, extracted from the spin-density evolution, we demonstrate a novel method for evaluating the effective Heisenberg exchange coupling constant, $J$, from first principles simulations. We find that $J$, extracted in such a new dynamical way, agrees quantitatively to that calculated by the standard density functional theory broken-symmetry scheme.
description: 12 pages, 13 figures
Saxifraga rudolphiana Hornschuch
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. Rudolphiana Hornschuch (S. oppositifolia L. ssp. Rudolphiana Rouy et Camus) Für das Wallis zu streichen (vgl. vorstehend, unter S. oppositifolia).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Point-contact spectroscopy in Co-doped CaFe2As2: nodal superconductivity and topological Fermi surface transition
Creators: name: Gonnelli, R. S.
name: Tortello, M.
name: Daghero, D.
name: Kremer, R. K.
name: Bukowski, Z.
name: Zhigadlo, N. D.
name: Karpinski, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We performed point-contact Andreev reflection spectroscopy measurements in Ca(Fe_{1-x}Co_x)2As2 single crystals with effective x=0.060 +- 0.005. The spectra of ab-plane contacts show a zero-bias maximum and broad shoulders at about 5-6 meV. Their fit with the three-dimensional Blonder-Tinkham-Klapwijk model (making use of a analytical expression for the Fermi surface that mimics the one calculated from first principles) shows that this compound presents a large isotropic gap on the quasi-2D electronlike Fermi surface sheets and a smaller anisotropic (possibly nodal) gap on the 3D holelike Fermi surface pockets centered at the Z point in the Brillouin zone. These results nicely fit into the theoretical picture for the appearance of nodal superconductivity in 122 compounds.
description: 11 pages, 3 figures
DNA-Markierung von AD-hMSCs mittels Elektroporation und deren Einfluss auf Zellcharakteristika
Creators: name: Von Der Haar, Kathrin
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Mesenchymale Stammzellen
subject: Markierung
subject: Elektroporation
subject: Lentivirale Transduktion
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Humane mesenchymale Stammzellen (hMSCs) werden häufig autolog (Donor und Empfänger sind identisch) in der Stammzelltherapie und dem Tissue Engineering angewandt, da hierbei mögliche Abstoßungsreaktionen umgangen werden. Für den Erfolg solcher Therapien ist u.a. die Distribution der transplantierten Zellen entscheidend. Ebenso kam es nach der Stammzell-Transplantation in einigen Studien zur Tumorformation im Patienten. Daher ist eine Markierung vor einer autologen Transplantation notwendig, um sie anschließend zu identifizieren und ggf. den Ursprung von entartetem Gewebe zu klären. Markierte Stammzellen können aber auch in vitro angewandt werden, um sie z.B. auf lichtundurchlässigen Trägermaterialien nachzuverfolgen (z.B. in Migrationsstudien).In der vorliegenden Arbeit wurden hMSCs aus dem Fettgewebe (AD-hMSCs) mit DNA markiert. Zunächst wurde die Elektroporation als DNA-Transfermethode etabliert. Hier perforiert ein elektrischer Puls die Zellmembran, was einen DNA-Transfer aus der Umgebung in die Zielzellen erlaubt. Zudem wurden Transfektionseffizienzen und der Einfluss der Elektroporation mit egfp (verbessertes grün fluoreszierendes Protein, engl. enhanced green fluorescent protein)-Reporterplasmid bzw. fluoreszenzmarkierter Nonsens-DNA auf die Zellcharakteristika untersucht und mit der lentiviralen Transduktion als Standardmethode zur MSC-Markierung verglichen. Die Elektroporation führte zu hohen Transfektionseffizienzen (Nonsens-DNA: 44.5%, egfp-Plasmid: 29.5%). Im Falle der Nonsens-DNA blieben alle untersuchten Zellcharakteristika erhalten. Nach egfp-Plasmid-Elektroporation und nach lentiviraler Transduktion war die Differenzierungskapazität herabgesetzt und lentivirale Transduktion führte zu einem veränderten Immunophänotyp. Weiterhin wurden die elektroporierten AD-hMSCs in vitro nachverfolgt. Hierbei konnten EGFP-markierte AD-hMSCs optisch online nachverfolgt werden, während das Signal der Nonsens-DNA für eine online Beobachtung jedoch zu schwach war. Die Ergebnisse zeigen, dass die Elektroporation ohne die gleichen Sicherheitsrisiken (z.B. mögliche Mutagenese) eine gute Alternative zu viralen Methoden zur AD-hMSC-Markierung darstellt. Insbesondere Nonsens-DNA-markierte AD hMSCs können sowohl in vivo als auch in vitro angewandt werden, da sie keine typischen Zellcharakteristika verlieren. EGFP-markierte AD-hMSCs hingegen sind beschränkt auf Studien, die keine Differenzierung erfordern.
The role of surface-energy of carbon-based nano-particles in polymer-filler interaction and reinforcement of elastomer nano-composites
Creators: name: Fleck, Frank
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: polymer
subject: polymer filler interaction
subject: rheology
subject: gas adsorption
subject: rubber
subject: reinforcement
subject: Polymer
subject: Gummi
subject: Polymer-Füllstoff-Wechselwirkung
subject: Verstärkung
subject: Gas Adsorption
subject: Rheologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this work, the role of carbon black (CB) as reinforcing material for elastomer composites was studied on various length-scales.The technique of static, volumetric gas adsorption was utilized to elucidate the energetic- and morphological characteristics of the surface of CB on the smallest length-scale. Furthermore, rheological measurements simultaneously measuring the mechanical- as well as the dielectric response of the sample, have been conducted.
Morphometric evidence for neuronal and glial prefrontal cell pathology in major depression
Creators: name: Dilley, Ginny
name: Rajkowska, Grazyna
name: Overholser, James C.
name: Meltzer, Herbert Y.
name: Miguel-Hidalgo, José J.
name: Stockmeier, Craig A.
name: Wei, Jinrong
name: Roth, Bryan L.
name: Pittman, Stephen D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Background: This report provides histopathological evidence to support prior neuroimaging findings of decreased volume and altered metabolism in the frontal cortex in major depressive disorder. Methods: Computer-assisted three-dimensional cell counting was used to reveal abnormal cytoarchitecture in left rostral and caudal orbitofrontal and dorsolateral prefrontal cortical regions in subjects with major depression as compared to psychiatrically normal controls. Results: Depressed subjects had decreases in cortical thickness, neuronal sizes, and neuronal and glial densities in the upper (II–IV) cortical layers of the rostral orbitofrontal region. In the caudal orbitofrontal cortex in depressed subjects, there were prominent reductions in glial densities in the lower (V–VI) cortical layers that were accompanied by small but significant decreases in neuronal sizes. In the dorsolateral prefrontal cortex of depressed subjects marked reductions in the density and size of neurons and glial cells were found in both supra- and infragranular layers. Conclusions: These results reveal that major depression can be distinguished by specific histopathology of both neurons and glial cells in the prefrontal cortex. Our data will contribute to the interpretation of neuroimaging findings and identification of dysfunctional neuronal circuits in major depression.
title: Tierbedarf in Galerien und Laboren. Für eine Theorie der produktiven Missverständnisse
Creators: name: Bexte, Peter
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 38, Nr. 3 (2010): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Gaps in the HD169142 protoplanetary disk revealed by polarimetric imaging: Signs of ongoing planet formation?
Creators: name: Quanz, Sascha P.
name: Avenhaus, Henning
name: Buenzli, Esther
name: Garufi, Antonio
name: Schmid, Hans Martin
name: Wolf, Sebastian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present H-band VLT/NACO polarized light images of the Herbig Ae/Be star HD169142 probing its protoplanetary disk as close as ~0.1" to the star. Our images trace the face-on disk out to ~1.7" (~250 AU) and reveal distinct sub-structures for the first time: 1) the inner disk (<20 AU) appears to be depleted in scattering dust grains; 2) an unresolved disk rim is imaged at ~25 AU; 3) an annular gap extends from ~40 - 70 AU; 4) local brightness asymmetries are found on opposite sides of the annular gap. We discuss different explanations for the observed morphology among which ongoing planet formation is a tempting - but yet to be proven - one. Outside of ~85 AU the surface brightness drops off roughly r^{-3.3}, but describing the disk regions between 85-120 AU / 120-250 AU separately with power-laws r^{-2.6} / r^{-3.9} provides a better fit hinting towards another discontinuity in the disk surface. The flux ratio between the disk integrated polarized light and the central star is ~4.1 * 10^{-3}. Finally, combining our results with those from the literature, ~40% of the scattered light in the H-band appears to be polarized. Our results emphasize that HD169142 is an interesting system for future planet formation or disk evolution studies.
description: Accepted for publication in ApJ letters
title: Autorinnen und Autoren
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 38, Nr. 3 (2010): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Genome-wide analysis of DNA copy-number changes using cDNA microarrays
Creators: name: Pollack, Jonathan R.
name: Perou, Charles M.
name: Botstein, David
name: Pergamenschikov, Alexander
name: Jeffrey, Stefanie S.
name: Alizadeh, Ash A.
name: Eisen, Michael B.
name: Williams, Cheryl F.
name: Brown, Patrick O.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1999

description: Gene amplifications and deletions frequently contribute to
tumorigenesis. Characterization of these DNA copy-number
changes is important for both the basic understanding of cancer
and its diagnosis. Comparative genomic hybridization (CGH)
was developed to survey DNA copy-number variations across a
whole genome1. With CGH, differentially labelled test and reference
genomic DNAs are co-hybridized to normal metaphase
chromosomes, and fluorescence ratios along the length of chromosomes
provide a cytogenetic representation of DNA copynumber
variation. CGH, however, has a limited (∼20 Mb)
mapping resolution, and higher-resolution techniques, such as
fluorescence in situ hybridization (FISH), are prohibitively
labour-intensive on a genomic scale. Array-based CGH, in which
fluorescence ratios at arrayed DNA elements provide a locus-by-
locus measure of DNA copy-number variation, represents
another means of achieving increased mapping resolution2–4.
Published array CGH methods have relied on large genomic
clone (for example BAC) array targets and have covered only a
small fraction of the human genome. cDNAs representing over
30,000 radiation-hybrid (RH)–mapped human genes5,6 provide
an alternative and readily available genomic resource for mapping
DNA copy-number changes. Although cDNA microarrays
have been used extensively to characterize variation in human
gene expression7–9, human genomic DNA is a far more complex
mixture than the mRNA representation of human cells. Therefore,
analysis of DNA copy-number variation using cDNA
microarrays would require a sensitivity of detection an order of
magnitude greater than has been routinely reported7. We
describe here a cDNA microarray-based CGH method, and its
application to DNA copy-number variation analysis in breast
cancer cell lines and tumours. Using this assay, we were able to
identify gene amplifications and deletions genome-wide and
with high resolution, and compare alterations in DNA copy
number and gene expression.
title: Bildnachweise
Creators: name: Redaktion, Die
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 38, Nr. 3 (2010): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
On Matrix Geometry and Effective Actions
Creators: name: Ferrari, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We provide an elementary systematic discussion of single-trace matrix actions and of the group of matrix reparameterization that acts on them. The action of this group yields a generalized notion of gauge invariance which encompasses ordinary diffeomorphism and gauge invariances. We apply the formalism to non-abelian D-brane actions in arbitrary supergravity backgrounds, providing in particular explicit checks of the consistency of Myers' formulas with supergravity gauge invariances. We also draw interesting consequences for emergent space models based on the study of matrix effective actions. For example, in the case of the AdS_5XS^5 background, we explain how the standard tensor transformation laws of the supergravity fields under ordinary diffeomorphisms emerge from the D-instanton effective action in this background.
description: 50 pages
Clinical efficacy and immune regulation with peanut oral immunotherapy
Creators: name: Burks, A. Wesley
name: Henry, Karen A.
name: Vickery, Brian P.
name: Perry, Tamara T.
name: Pons, Laurent
name: Zhong, Xiaoping
name: Roberts, Joseph L.
name: Durham, Stephen
name: Jones, Stacie M.
name: Adair, Margaret
name: Steele, Pamela
name: Shreffler, Wayne G.
name: Francis, James M.
name: Scurlock, Amy M.
name: Kulis, Mike
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Background Oral immunotherapy (OIT) has been thought to induce clinical desensitization to allergenic foods, but trials coupling the clinical response and immunologic effects of peanut OIT have not been reported. Objective The study objective was to investigate the clinical efficacy and immunologic changes associated with OIT. Methods Children with peanut allergy underwent an OIT protocol including initial day escalation, buildup, and maintenance phases, and then oral food challenge. Clinical response and immunologic changes were evaluated. Results Of 29 subjects who completed the protocol, 27 ingested 3.9 g peanut protein during food challenge. Most symptoms noted during OIT resolved spontaneously or with antihistamines. By 6 months, titrated skin prick tests and activation of basophils significantly declined. Peanut-specific IgE decreased by 12 to 18 months, whereas IgG4 increased significantly. Serum factors inhibited IgE–peanut complex formation in an IgE-facilitated allergen binding assay. Secretion of IL-10, IL-5, IFN-γ, and TNF-α from PBMCs increased over a period of 6 to 12 months. Peanut-specific forkhead box protein 3 T cells increased until 12 months and decreased thereafter. In addition, T-cell microarrays showed downregulation of genes in apoptotic pathways. Conclusion Oral immunotherapy induces clinical desensitization to peanut, with significant longer-term humoral and cellular changes. Microarray data suggest a novel role for apoptosis in OIT.
Colored bosons on top FBA and angular cross section for $t \bar t$ production
Creators: name: Benbrik, R.
name: Chen, Chuan-Hung
name: Kacimi, M. EL
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: With full data set that corresponds to an integrated luminosity of 9.4 fb$^{-1}$, CDF has updated the top quark forward-backward asymmetry (FBA) as functions of rapidity difference $|Δy|$ and $t\bar t$ invariant mass $M_{t\bar t}$. Beside the sustained inconsistency between experiments and standard model (SM) predictions at large $|Δy|$ and $M_{t\bar t}$, an unexpected large first Legendre moment with $a_1= 0.39\pm 0.108 $ is found. In order to solve the large top FBA, we study the contributions of color triplet scalar and color octet vector boson. We find that the top FBA at $|Δy| >1$ and $M_{t\bar t} > 450$ GeV in triplet and octet model could be enhanced to be around 30% and 20%, whereas the first Legendre moment is $a^{\bf Di}_1= 0.38$ and $a^{\bf Axi}_1= 0.23$, respectively.
description: 13 pages, 5 figures; references added
Optimierung der Mößbauerspektroskopie für Weltraummissionen
Creators: name: Jahns, Moritz
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: Mössbauer spectroscopy
subject: two-dimensional Mössbauer spectra
subject: sample and hold circuit
subject: Mößbauerspektroskopie
subject: Zweidimensionale Mößbauerspektren
subject: MIMOS II
subject: Abtast-Halte-Schaltung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Die Mößbauerspektroskopie ist eine hochpräzise Methode zur Analyse von verschiedenen Elemen-ten. Sie beruht auf dem MÖßBAUER-Effekt, der rückstoßfreien Kernresonanzabsorption von γ-Strahlen und wurde nach ihrem Entdecker Rudolf MÖßBAUER benannt. Anhand dieser spektrosko-pischen Methode können Bindungs- und magnetische Eigenschaften untersucht werden. Beson-ders für das Element Eisen ist die Mößbauerspektroskopie von Interesse. Das anregende Isotop für Eisen ist das 57Co, das bei 14,41 keV einen Zerfallsübergang hat, welcher eine Resonanz im Eisen erzeugen kann. Die Geräte zur Mößbauerspektroskopie beruhen auf Methoden der Gammastrahlenspektroskopie. Um ein Spektrum einer zu analysierenden Substanz anzufertigen muss die Energie der 57Co Quelle variiert werden. Um dies zu erreichen wird die Quelle periodisch bewegt, so dass aufgrund des DOPPLER-Effektes die Frequenz und damit auch die Energie der abgestrahlten Photonen verändert wird. In dieser Arbeit wurde ein Gerät entwickelt, welches eine bessere Aufzeichnung der detektierten Photonen ermöglicht. Während konventionelle Geräte für Mößbauerspektroskopie die resonante Linie vorher festlegen und somit nur einen kleinen Teil der detektierten Photonen betrachten, wird in dieser Arbeit der Ansatz verfolgt, alle Photonen korreliert mit der Relativgeschwindigkeit der Quelle zu erfassen. Inhärent ergibt sich so auch ein Energiespektrum, aus dem, nach der Messung, die zu untersuchende Linie ausgewählt werden kann. Mit Hilfe dieses Ansatzes wurde die Messung vereinfacht, da Fehler bei der Auswahl der Linie nicht dazu führen, eine vollständig neue Messung anfertigen zu müssen. Da die Aufnahme eines Möß-bauerspektrums teilweise sehr zeitintensiv sein kann, ist hiermit ein großer Vorteil gegeben. Zusätz-lich können parallel mehrere Energiebereiche untersucht werden, so dass weitere Resonanzen vor allem im Bereich von 6,4 keV oder sogar in niedrigeren Energiebereichen beobachtet werden kön-nen. Auf Basis der verschiedener Eindringtiefen der unterschiedlichen Energien konnte so gezeigt wer-den, dass tiefenaufgelöste Messungen mit Hilfe des entwickelten Gerätes möglich sind.
title: Entrückte Körper. Vormoderne Befindlichkeiten in zeitgenössischen Film- und Videoarbeiten
Creators: name: Müller, Vanessa
Publisher: name: University Library Heidelberg
Year: 2016

description: kritische berichte - Zeitschrift für Kunst- und Kulturwissenschaften, Bd. 38, Nr. 4 (2010): kritische berichte, Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Dispersion of traffic exhausts emitted from a stationary line source versus individual moving cars – a numerical comparison
Creators: name: Gross, Günter
Publisher: name: Stuttgart : Gebrueder Borntraeger Verlagsbuchhandlung
Year: 2016
Subjects: subject: Micro-scale simulation
subject: running traffic
subject: vehicle dispersion
subject: urban canyon concentration
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: A three-dimensional microscale model was used to study the effects of moving vehicles on air pollution in the close vicinity of a road. The numerical results are compared to general findings from wind tunnel experiments and field observations. It was found that the model is suitable to capture the main flow characteristics within an urban street canyon, in particular the modifications relating to running traffic. A comparison of the results for a stationary line source approach and for multiple single moving sources demonstrates significant differences. For a street in a flat terrain, the near-road concentrations are underestimated by up to a factor of two if the emissions are approximated by a stationary line source. This underestimation decreases with increasing distance, and becomes negligible 30–50 m away from the road. For an urban canyon situation, the line source assumption is a conservative approximation for the concentrations at the leeside of the street, while on the opposite pavement and wall, a systematic underestimation was found. Also, the effects of different traffic situations have been studied and discussed.
2023 OpenFF Annual Meeting - Assessing charge models by means of atom-by-atom and dipole comparison
Creators: name: D'Amore, Lorenzo
name: Swope, William
Publisher: name: Zenodo
Year: 2023

description: Assessing charge models by means of atom-by-atom and dipole comparison Bill Swope*, Lorenzo D’Amore+ Alberto Gobbi*, Ben Sellers* David Hahn#, David Mobley+ *Genentech, +OpenFF, #Janssen This is a presentation from the second day of the 2023 OMSF Symposium in Boston, which ran as a hybrid in-person/virtual event. https://youtu.be/Fqjpz22i8MU
description: Research supported by NIH R01 GM132386
Time accurate numerical study of turbulent supersonic jets
Creators: name: Rona, Aldo
name: Zhang, Xin
Publisher: name: figshare
Year: 2022
Subjects: subject: 90101 Aerodynamics (excl. Hypersonic Aerodynamics)
subject: FOS: Mechanical engineering
subject: 91301 Acoustics and Noise Control (excl. Architectural Acoustics)

description: A time accurate numerical study is presented of an over-expanded Mach 2 circular turbulent jet in which the flow is assumed axisymmetric. The focus of this inves- tigation is on the jet screech phenomenon resulting from the interaction between the large scale turbulent mixing region instabilities and the regular spacing of the shock wave-expansion system, (shock cells), in the over-expanded jet. The solution is obtained of the ‘short’ Time Dependent Reynolds Averaged Navier-Stokes equa- tions (TRANS), using a two-equation, k − ω, turbulence model. The time accurate method was first calibrated for the given model geometry when the flow was fully expanded, and the resulting mean flow characteristics were compared with experi- mental data. The results were in broad agreement for the first ten diameters of the jet downstream of the exit. Further downstream the time averaged axial velocity decayed at a slightly faster rate than in the experiments. In an ideal inviscid fully expanded jet no shock cells would be present but in the turbulent jet calculations weak shock cells appeared which gradually died out beyond about ten diameters from the nozzle exit. The calculated non-dimensional time averaged transverse ve- locity profiles showed self-similarity, when allowance was made for the false origin of the shear layer, in agreement with the measured results. In the calculations for the over-expanded jet it was found, in agreement with exper- imental data, that the interaction between shock cell modulated instability waves and the shock-expansion system generated jet screech. It was found, as part of the screech phenomenon, that the shocks and the shock cells oscillated over a small distance which increased from the axis to a maximum within the shear layer. This shock unsteadiness resulted in the shocks being smeared when viewed in the equiv- alent steady flow calculations.
Telomerlängenregulation während der Embryogenese
Creators: name: Schätzlein, Sonja
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Telomerelength
subject: regulation
subject: embryogenesis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Synthese von Zinkchalkogenid-Mischkristallen durch Anionenaustauschreaktionen an der fest/gas-Grenzfläche
Creators: name: Roth, Hendrik
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Mischkristalle
subject: Diffusion
subject: chemischer Transport
subject: Chalkogenide
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Adjoint maps between implicative semilattices and continuity of localic maps
Creators: name: Erné, Marcel
name: Picado, Jorge
name: Pultr, Aleš
Publisher: name: Basel : Springer
Year: 2022
Subjects: subject: Adjoint map
subject: Complement
subject: Implicative semilattice
subject: Localic map
subject: Nuclear range
subject: Sublocale
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: We study residuated homomorphisms (r-morphisms) and their adjoints, the so-called localizations (or l-morphisms), between implicative semilattices, because these objects may be characterized as semilattices whose unary meet operations have adjoints. Since left resp. right adjoint maps are the residuated resp. residual maps (having the property that preimages of principal downsets resp. upsets are again such), one may not only regard the l-morphisms as abstract continuous maps in a pointfree framework (as familiar in the complete case), but also characterize them by concrete closure-theoretical continuity properties. These concepts apply to locales (frames, complete Heyting lattices) and provide generalizations of continuous and open maps between spaces to an algebraic (not necessarily complete) pointfree setting. © 2022, The Author(s).
AКЦИЯДОРЛИК ЖАМИЯТЛАРИГА ХОРИЖИЙ ИНВЕСТОРЛАРНИ ЖАЛБ ҚИЛИШ ЖАРАЁНИДА КОРПОРАТИВ БОШҚАРУВНИНГ ТУТГАН РОЛИ
Creators: name: МАҚСУДОВ, А.Х.
Publisher: name: Zenodo
Year: 2024

description: Бозор иқтисодиёти шароитида корпоратив тузилмалар ва давлат ўртасидаги муносабатларни ташкил этишнинг бирон бир идеал модели мавжуд эмас. Шунинг учун ҳам ривожланган бозор иқтисодиётига эга мамлакатларда ҳам давлат томонидан тартибга солиш амал қилиб келмоқда. Бунда давлат улуши билан бирга маҳаллий ҳокимиятлар улушини ҳам стратегик аҳамиятга эга йирик корпоратив тузилмалар устав капиталига киритиш орқали давлат иштирокини таъминлаш амалиёти хорижий мамлакатларда кенг қўлланилади ва бу жиҳат корпоратив бошқарув муҳим аҳамиятга эга ҳисобланади. Ҳозирги вақтда Ўзбекистонда корхоналарни бошқариш соҳасида икки яққол шаклланган тенденцияларни ажратиб қўрсатиш мумкин:
ANALYSIS OF PHOTOREACTIVITY IN ORGANIC DONOR-ACCEPTOR SYSTEMS AS UV-MALDI MATRICES: AN IN SILICO PERSPECTIVE
Creators: name: Campo Hernandez, Emmanuel
name: Combariza, Aldo F.
Publisher: name: Zenodo
Year: 2023

description: La quimiotaxonomía del fitoplancton se soporta en el análisis de patrones moleculares a partir de pigmentos contenidos en sus estructuras internas. Una forma de identificación de estos pigmentos es vía espectrometría de masas (MS) con fuente de ionización MALDI y matrices de transferencia-electrónica (ET). Algunas matrices se derivan de compuestos Donor-Aceptor (D-A) basados en trifenilamina y carbazol. Sin embargo, los detalles de reactividad y mecanismos de fotoexcitación y transferencia de cargas en MALDI-MS no son bien conocidos. El objetivo de nuestro trabajo es la determinación y predicción de propiedades optoelectrónicas de compuestos D-A basados en trifenilamina y carbazol para la exploración de los procesos de fotoexcitación y transferencia electrónica entre pigmentos y compuestos D-A. Nuestro ansatz se basa en la Teoría del Funcional de la Densidad (DFT), con funcionales híbridos, meta-híbridos y de largo-alcance (LC) y funciones base de la familia Ahlrichs. Inicialmente, se optimiza la geometría de los compuestos base y derivados con sustituyentes -CN, -COOCH3 y -COOH y se determinan y predicen las propiedades electrónicas HOMO, LUMO, UV-vis, IR, distribución de cargas (CPA) y potenciales electrostáticos (MEP). Para la determinación y predicción de las propiedades electrónicas en general, los funcionales híbridos y meta-híbridos (M062X) aportan precisión y un bajo tiempo de ejecución. Por otro lado, referente al cálculo de los estados excitados derivados del UV-vis requiere funcionales LC que tienen una mejor resolución de correlación electrónica y actualmente se está implementando el funcional CAM-B3LYP. El siguiente paso es analizar la correlación de propiedades electrónicas y optoelectrónicas para dar explicación a los fenómenos de fotoexcitación y transferencia de carga entre matrices D-A y pigmentos.
Thermoelectric effects and the asymmetry of the current-voltage characteristics of metallic point contacts
Creators: name: Naidyuk, Yu. G.
name: Gribov, N. N.
name: Shklyarevskii, O. I.
name: Jansen, A. G. M.
name: Yanson, I. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: An asymmetry as a function of the direction of current flow is observed in the current-voltage characteristic (CVC) and its first and second derivatives for point heterocontacts between pure metals {Cu, Ni, Fe) as well as between these metals and dilute alloys (CuFe, CuMn). It is shown that the observed asymmetry is caused by thermoelectrical phenomena (Seebeck, Peltier, and Thompson effects), observed when the temperature inside the contact differs from the temperature of the bath. In the low energy range (less than or of the order of the Debye energy) the asymmetry of the CVC is affected mainly by the Seebeck effect, while at high energies and for larger contacts (lower resistance) the contributions of all noted effects are of the same order of magnitude. A technique is proposed for determining the temperature of a heterocontact by measuring the CVC in two polarities. It is established that in the intermediate (between the diffusion and ballistic) state of flight of the electrons through the constriction the temperature of the heterocontact increases linearly with the voltage on it, and all the more rapidly the larger the contact and the more impurity in it.
description: 5 pages, 8 figs. It is shown that even in the spectroscopic regime (ballistic or diffusion) temperature in point contact rises with a voltage
title: Editorial
Creators: name: Wolf, Claus
Publisher: name: University Library Heidelberg
Year: 2016

description: Denkmalpflege in Baden-Württemberg – Nachrichtenblatt der Landesdenkmalpflege, Bd. 45, Nr. 1 (2016), Beginn und Erscheinungsfrequenz: Ausgaben pro Band: 4
Temperature-dependent change of the fractal dimension of Cu dendrites on Cu(111)
Creators: name: Sprodowski, C.
name: Morgenstern, K.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2020
Subjects: subject: Copper metallography
subject: Scanning tunneling microscopy
subject: Temperature
subject: Equilibrium shape
subject: Increasing temperatures
subject: Low temperatures
subject: Rounded corners
subject: Shape change
subject: Substantial variations
subject: Temperature-dependent changes
subject: Variable temperature
subject: Fractal dimension
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We investigate the shape of monatomic high Cu islands on a Cu(111) surface by variable-temperature scanning tunneling microscopy between 110 K and 240 K. Low temperature dendrites evolve towards more compact shapes at increasing temperature; finally reaching the equilibrium shape of a hexagon with rounded corners. Time-lapsed imaging at increasing temperature reveals the onset of shape change to be at ≈170 K, corresponding to the onset of edge and corner diffusion of atoms along the island's borders. Despite a substantial variation for individual islands at each temperature, the mean fractal dimension increases monotonously between 170 K up to 240 K, from the smallest to the largest values feasible for islands grown on surfaces. © 2020 The Author(s). Published by IOP Publishing Ltd on behalf of the Institute of Physics and Deutsche Physikalische Gesellschaft.
Greensboro's Enterprise Community Strategic Plan
Creators: name: Cowhig, Mike
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1996

description: In the summer of 1994, Greensboro was one of eight North Carolina cities that applied for the federal Enterprise Community (EC) grant program, a major economic and community development initiative of the Clinton Administration. The EC program offered cities nearly S3 million in Social Service Block Grant funds. These funds, unlike entitlement programs, applied to a broad range of activities and came with few strings attached. The only stipulation was that the funds be used to help reduce poverty in "'distressed" neighborhoods. Charlotte was the only North Carolina city that was awarded an Enterprise Community grant among the approximately 100 recipient cities nationwide. Although Greensboro did not win a grant, it found the application process to be a rewarding experience in a number of ways.