cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Melons are branched polymers
Creators: name: Gurau, Razvan
name: Ryan, James P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Melonic graphs constitute the family of graphs arising at leading order in the 1/N expansion of tensor models. They were shown to lead to a continuum phase, reminiscent of branched polymers. We show here that they are in fact precisely branched polymers, that is, they possess Hausdorff dimension 2 and spectral dimension 4/3.
Equivariant loops on classifying spaces
Creators: name: Moi, Kristian Jonsson
Publisher: name: arXiv
Year: 2013
Subjects: subject: K-Theory and Homology (math.KT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics

description: We compute the homology of the space of equivariant loops on the classifying space of a simplicial monoid $M$ with anti-involution, provided $π_0 (M)$ is central in the homology ring of $M$. The proof is similar to McDuff and Segal's proof of the group completion theorem. Then we compute the homology of the $C_2$-fixed points of a Segal-type model of the algebraic $K$-theory of an additive category with duality. As an application we show that this fixed point space is sometimes group complete, but not in general.
title: Results of researches of tribological properties of modified greases
Creators: name: Safonov, V.V.
name: Azarov, A.S.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article assesses the efficiency of modification of greases with nanosized polytitanate potassium. The studies were carried out on a four-ball friction machine. The results of tribological tests of experimental lubricating compositions prepared using different concentrations of potassium polytitanate were obtained.
title: Modeling of non-stationary heat and mass transfer with a moving phase boundary during storage and transportation of cryofuel in a closed vessel
Creators: name: Soldatov, E.S.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The article presents the results of computer modeling of the process of non-stationary heat and mass transfer during a long-term storage of cryofuel in a vessel. Based on experimental data on the temperature field parameters in the vapor space of a reservoir with liquefied natural gas, the proposed model was verified. It is concluded that it is possible and expedient to perform a numerical study, instead of an expensive experimental one, for calculating thermophysical parameters during a long-term storage, including the assessment of the value of movement of the phase boundary.
Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
Creators: name: Thompson, Maggie A.
name: Kirkpatrick, J. Davy
name: Mace, Gregory N.
name: Cushing, Michael C.
name: Gelino, Christopher R.
name: Griffith, Roger L.
name: Skrutskie, Michael F.
name: Eisenhardt, Peter R. M.
name: Wright, Edward L.
name: Marsh, Kenneth A.
name: Mix, Katholeen J.
name: Beichman, Charles A.
name: Faherty, Jacqueline K.
name: Toloza, Odette
name: Ferrara, Jocelyn
name: Apodaca, Brian
name: McLean, Ian S.
name: Bloom, Joshua S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In our effort to complete the census of low-mass stars and brown dwarfs in the immediate Solar Neighborhood, we present spectra, photometry, proper motions, and distance estimates for forty-two low-mass star and brown dwarf candidates discovered by the Wide-field Infrared Survey Explorer (WISE). We also present additional follow-up information on twelve candidates selected using WISE data but previously published elsewhere. The new discoveries include fifteen M dwarfs, seventeen L dwarfs, five T dwarfs, and five objects of other type. Among these discoveries is a newly identified "unusually red L dwarf" (WISE J223527.07+451140.9), four peculiar L dwarfs whose spectra are most readily explained as unresolved L+T binary systems, and a T9 dwarf (WISE J124309.61+844547.8). We also show that the recently discovered red L dwarf WISEP J004701.06+680352.1 (Gizis et al. 2012) may be a low-gravity object and hence young and potentially low mass (< 25 MJup).
description: 87 pages with 22 figures; accepted for publication in the 01 July 2013 issue of Publications of the Astronomical Society of the Pacific
title: Secondary bulk heat treatment of liquefied gas storage tanks
Creators: name: Druzhinin, G.M.
name: Loshkariov, N.B.
name: Khammatov, I.M.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: Russia is one of the world leaders in the production and processing of oil and gas and has a huge fleet of tanks for the storage of these products. Construction of large tanks for storage of petroleum products and liquefied petroleum gases (LPG) is a very difficult and responsible task. Since tanks with a volume of more than 2000 m3 are welded directly at the site of operation, and, as is known, when welding in the seam there are thermal stresses that must be removed by heat treatment, then this treatment has to be carried out by heating the tanks to a temperature of about 600...650 0C directly at the construction site.
Integral Equations for Computing AC Losses of Radially and Polygonally Arranged HTS Thin Tapes
Creators: name: Brambilla, Roberto
name: Grilli, Francesco
name: Martini, Luciano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper we derive the integral equations for radially and polygonally arranged high-temperature superconductor thin tapes and we solve them by finite-element method. The superconductor is modeled with a non-linear power law, which allows the possibility of considering the dependence of the parameters on the magnetic field or the position. The ac losses are computed for a variety of geometrical configurations and for various values of the transport current. Differences with respect to existing analytical models, which are developed in the framework of the critical state model and only for certain values of the transport current, are pointed out.
title: Analysis of the design options for LNG storage tanks for the needs of autonomous gasification of coastal settlements
Creators: name: Ivanov, L.V.
name: Anokhin, A.V.,
name: Zaitsev, A.V.
Publisher: name: Scientific Research Centre "MachineStructure"
Year: 2019

description: The paper considers options for the performance of liquefied natural gas (LNG) storages for the needs of autonomous gasification of remote settlements located on the coasts. Traditional port flat-bottomed storage facilities, overhead tanks in various designs, as well as floating storage facilities are evaluated. A list of floating storage concepts is given and the best option is selected from them.
Entwicklung eines Aptamer-basierten Lateral Flow Assays zur Detektion eines veterinärdiagnostischen Targets
Creators: name: Schüling, Torsten
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2021
Subjects: subject: Lateral Flow Assay
subject: Aptamer
subject: Goldnanopartikel
subject: Microarray
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Lateral Flow Assays ermöglichen eine Detektion chemischer Verbindungen auf einfache Art und Weise. Momentan sind z.B. Antigentests zur Detektion einer SARS-CoV-2 Infektion stark nachgefragt. Im Rahmen dieser Dissertation wurde das β-Lactam-Antibiotikum Ampicillin als vielversprechender Analyt für die Entwicklung eines solchen Schnelltests ausgesucht, da Ampicillin intensiv in der Landwirtschaft eingesetzt wird. Dabei können Rückstände auch in der Kuhmilch nachgewiesen werden, weshalb in der EU f ür viele Antibiotika Grenzwerte festgelegt wurden. Für die molekulare Erkennung von Ampicillin wurden in dieser Arbeit Aptamere genutzt. Mit Hilfe der Microscale Thermophoresis konnte die Affinität des Aptamers zu Ampicillin bestimmt werden. Für kleine Molek¨ ule wie Ampicillin ist ein kompetitives Assayformat vorteilhaft, weshalb drei Oligonukleotide charakterisiert und in Microarray Experimenten auf ihre Eignung zur Detektion von Ampicillin überprüft wurden. Zur Üersetzung der Aptamerbindung in ein kolorimetrisches Signal wurden Goldnanopartikel verwendet. Nach der Synthese der Partikel fand eine Immobilisierung der Aptamere auf der Partikeloberfläche statt. Neben Elektronenmikroskop Aufnahmen wurden vor allem die UV-Vis-Spektroskopie und die dynamische Lichtstreuung zur Analyse eingesetzt. Zuletzt fand eine Übertragung der Ergebnisse auf das Lateral Flow Assay Format statt.
A class of conformal curves in the Reissner-Nordström spacetime
Creators: name: Lübbe, Christian
name: Kroon, J. A. Valiente
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A class of curves with special conformal properties (conformal curves) is studied on the Reissner-Nordström spacetime. It is shown that initial data for the conformal curves can be prescribed so that the resulting congruence of curves extends smoothly to future and past null infinity. The formation of conjugate points on these congruences is examined. The results of this analysis are expected to be of relevance for the discussion of the Reissner-Nordström spacetime as a solution to the conformal field equations and for the global numerical evaluation of static black hole spacetimes.
description: 32 pages, 2 figures
QED Vacuum Loops and Dark Energy
Creators: name: Fried, H. M.
name: Gabellini, Y.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A QED--based "bootstrap" mechanism is suggested as an explanation for the vacuum energy that furnished the initial impulse for Inflation, and continues on to provide present day Dark Energy. Virtual vacuum fluctuations are assumed to generate effective electromagnetic fields whose average value corresponds to an effective c--number $A_μ^{\rm vac}(x)$, which is itself equal to the vacuum expectation value of the operator $A_μ(x)$ in the presence of that $A_μ^{\rm vac}(x)$. Lorentz invariance is manifest, as every observer would measure the same electric field in his or her own reference frame. The model has one arbitrary parameter $ξ$, and fits the energy density of present day Dark Energy for $ξ\sim O(1)$.
description: 12 pages, 1 figure. arXiv admin note: text overlap with arXiv:hep-th/0310095, arXiv:hep-th/0303108
Revival times at quantum phase transitions
Creators: name: Santos, Francisco de los
name: Romera, Elvira
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The concept of quantum revivals is extended to many-body systems and the implications of traversing a quantum phase transition are explored. By analyzing two different models, the vibron model for the bending of polyatomic molecules and the Dicke model for a quantum radiation field interacting with a system of two-level atoms, we show evidence of revival behavior for wave packets centered around energy levels as low as the fundamental state. Away from criticality, revival times exhibit smooth, nonsingular behavior, and are proportional to the system size. Upon approaching a quantum critical point, they diverge as a power law and scale with the system size, although the scaling is no longer linear.
description: 6 pages, 6 figures
The Effects of Variations in Nuclear Interactions on Nucleosynthesis in Thermonuclear Supernovae
Creators: name: Parikh, Anuj
name: Jose, Jordi
name: Seitenzahl, Ivo R.
name: Roepke, Friedrich K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The impact of nuclear physics uncertainties on nucleosynthesis in thermonuclear supernovae has not been fully explored using comprehensive and systematic studies with multiple models. To better constrain predictions of yields from these phenomena, we have performed a sensitivity study by post-processing thermodynamic histories from two different hydrodynamic, Chandrasekhar-mass explosion models. We have individually varied all input reaction and, for the first time, weak interaction rates by a factor of ten and compared the yields in each case to yields using standard rates. Of the 2305 nuclear reactions in our network, we find that the rates of only 53 reactions affect the yield of any species with an abundance of at least 10^-8 M_sun by at least a factor of two, in either model. The rates of the 12C(a,g), 12C+12C, 20Ne(a,p), 20Ne(a,g) and 30Si(p,g) reactions are among those that modify the most yields when varied by a factor of ten. From the individual variation of 658 weak interaction rates in our network by a factor of ten, only the stellar 28Si(b+)28Al, 32S(b+)32P and 36Ar(b+)36Cl rates significantly affect the yields of species in a model. Additional tests reveal that reaction rate changes over temperatures T > 1.5 GK have the greatest impact, and that ratios of radionuclides that may be used as explosion diagnostics change by a factor of less than two from the variation of individual rates by a factor of 10. Nucleosynthesis in the two adopted models is relatively robust to variations in individual nuclear reaction and weak interaction rates. Laboratory measurements of a limited number of reactions would help to further constrain predictions. As well, we confirm the need for a consistent treatment for relevant stellar weak interaction rates since simultaneous variation of these rates (as opposed to individual variation) has a significant effect on yields in our models.
description: accepted by A&A, 14 pages, 5 figures, 2 tables
title: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 6, Nr. 3 (1922)
title: Germania
titleType: AlternativeTitle
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2015

description: Bauernkultur und Herrenkultur in vorgeschichtlicher Zeit...97-103
Zur „Wasserburg Buchau“...103-105
Zum vorgeschichtlichen Wohnbau...105-110
Ein Haus und Grab der jüngeren Steinzeit bei Haidorf, Kr. Melsungen, Reg. Bez. Cassel...111-114
Das Bataverhaus...114-115
Ein Halsring mit Haarumwicklung...115-117
Römisches Gebäude im Rotwildpark bei Stuttgart...117-122
Zur Wiederherstellung und Deutung des römischen Gebäudes im Rotwildpark bei Stuttgart...122-123
Belgische Gefäße in Vertillum (Verfault, Côte-d’Or)...123-125
Ein neugefundenes römisches Bildwerk aus Württemberg...125-126
Zu dem römischen Altar aus Mainz...126-127
Zur Grabinschrift aus Luxemburg...127
Der Hiatus zwischen der Römerzeit und dem frühen Mittelalter...127-132
Literatur...133-144
Study of some semi-linear elliptic equation
Creators: name: Mabrouk, Anouar Ben
Publisher: name: arXiv
Year: 2012
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J25, 35J60

description: We propose in this paper to study the solutions of some nonlinear elliptic equations with singular potential.
description: 8 pages
Essays on investments in financial markets
Creators: name: Bövers, Kim Janette
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: investment decisions
subject: private household
subject: financial markets
subject: macroeconomic
subject: financial innovation
subject: Investitionsentscheidungen
subject: privater Haushalt
subject: Finanzmärkte
subject: Makroökonomie
subject: Finanzinnovation
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: This dissertation is about investment decisions of private investors with respect to different asset classes, macroeconomic influences and the economic development. Chapter 1 deals with the reactions of German private investors to monetary policy decisions by the European Central Bank (ECB), in particular with regard to trading in equities and bonds. Chapter 2 investigates the characteristics and investment decisions of German private investors in the trading of structured financial products. In Chapter 3, the results of two other studies on hedge ratios in foreign currency investments are reviewed with a longer dataset over the period 1975 to 2016 and supplemented by a differentiation according to the business cycle.
A fluctuation relation for weakly ergodic aging systems
Creators: name: Crisanti, A.
name: Picco, M.
name: Ritort, F.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A fluctuation relation for aging systems is introduced, and verified by extensive numerical simulations. It is based on the hypothesis of partial equilibration over phase space regions in a scenario of entropy-driven relaxation. The relation provides a simple alternative method, amenable of experimental implementation, to measure replica symmetry breaking parameters in aging systems. The connection with the effective temperatures obtained from the fluctuation-dissipation theorem is discussed.
description: 5 pages, 3 figures, Phys Rev Lett (in press)
Probing the Dark Matter mass and nature with neutrinos
Creators: name: Blennow, Mattias
name: Carrigan, Marcus
name: Martinez, Enrique Fernandez
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study the possible indirect neutrino signal from dark matter annihilations inside the solar interior for relatively light dark matter masses in the O(10) GeV range. Due to their excellent energy reconstruction capabilities, we focus on the detection of this flux in liquid argon or magnetized iron calorimeter detectors, proposed for the next generation of far detectors of neutrino oscillation experiments and neutrino telescopes. The aim of the study is to probe the ability of these detectors to determine fundamental properties of the dark matter nature such as its mass or its relative annihilation branching fractions to different channels. We find that these detectors will be able to accurately measure the dark matter mass as long as the dark matter annihilations have a significant branching into the neutrino or at least the tau channel. We have also discovered degeneracies between different dark matter masses and annihilation channels, where a hard tau channel spectrum for a lower dark matter mass may mimic that of a softer quark channel spectrum for a larger dark matter mass. Finally, we discuss the sensitivity of the detectors to the different branching ratios and find that it is between one and two orders of magnitude better than the current bounds from those coming from analysis of Super-Kamiokande data.
description: REVTeX4, 21 pages, 5 figures
Aspekte der Produktaufreinigung und -analytik in der Tierzellkultivierung
Creators: name: Gonzalez Salcedo, Alina
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: monoclonal antibody
subject: quantity
subject: stability
subject: purification
subject: capture step
subject: purification steps
subject: bioactivity
subject: monoklonaler Antikörper
subject: Quantität
subject: Stabilität
subject: Aufreinigung
subject: Capture-Schritt
subject: Polishing-Schritte
subject: Bioaktivität
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Monoklonale Antikörper (mAk) werden in der modernen Medizin für therapeutische und diagnostische Anwendungen eingesetzt. Durch ihre hohe spezifische Bindung an krankheitsauslösende Antigene können diese identifiziert und unschädlich gemacht werden. Für den Einsatz in Medikamenten muss der hergestellte mAk hohe Reinheitsanforderungen erfüllen die nur durch einen optimalen Aufreinigungsprozess nach der Produktion erreicht werden können. Außerdem sind sehr spezifische Analysen für jeden Antikörper notwendig, um die biologische Wirksamkeit des Produktes nachweisen zu können. Im Rahmen dieser Dissertation wurde ein mAk, der in chinesischen Zwerghamsterova-rien (CHO)-Zellen produziert wurde, als Modellprotein verwendet. Zunächst wurden analytische Methoden zur Quantitätsbestimmung verglichen und Stabilitätsuntersuchungen durchgeführt. Außerdem wurden die verschiedenen Schritte der Aufreinigung eines mAk von der Zellabtrennung bis hin zu den Polishing-Schritten optimiert und durchgeführt. Dabei eignet sich für die Zellabtrennung vor allem die Zentrifugation. Für die Durchführung des chromatographischen Protein A-Capture-Schritts besitzt eine Säule im Vergleich zu einem Membranadsorber eine höhere dynamische Bindungskapa-zität. Für die folgenden Polishing-Schritte wurden drei verschiedene chromatographi-sche Methoden getestet: Die Anionenaustauschchromatographie (AEX), die Kationen-austauschchromatographie (CEX) und die hydrophobe Interaktionschromatographie (HIC). Dabei wurde mit der AEX die höchste Ausbeute sowie Reinheit erzielt. Durch die HIC konnte hingegen die meisten Wirtszellproteine entfernt werden. Bei der Kombina-tion zweier Polishing-Schritte ergab die Reihenfolge aus AEX und anschließend CEX sowohl die höchste Ausbeute als auch die größte Reinheit. Für die Qualitätskontrolle wurde ein Bioaktivitätsassay etabliert, bei dem die Bindungen des mAks zu seinem Antigen genutzt wurde, um die Apoptose-auslösende Wirkung des Antigens zu unterdrücken. Es konnte gezeigt werden, dass der mAk über die jeweiligen verschiedenen Aufreinigungs-schritte bioaktiv blieb.
Spectral expansions of cosmological fields
Creators: name: Malyarenko, Anatoliy
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60G60

description: We give a review of the theory of random fields defined on the observable part of the Universe that satisfy the cosmological principle, i.e., invariant with respect to the 6-dimensional group $\mathcal{G}$ of the isometries of the time slice of the Friedmann--Lema\^ıtre--Robertson--Walker standard chart. Our new results include proof of spectral expansions of scalar and spin weighted $\mathcal{G}$-invariant cosmological fields in open, flat, and closed cosmological models.
description: 24 pages, no figures
Designing a robotic port system for laparo-endoscopic single-site surgery
Creators: name: Amanov, Ernar
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: minimally-invasive surgery
subject: continuum robots design
subject: partial nephrectomy
subject: minimal-invasive Chirurgie
subject: Kontinuumsroboter-Design
subject: partielle Nephrectomy
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Current research and development in the field of surgical interventions aim to reduce the invasiveness by using few incisions or natural orifices in the body to access the surgical site. Considering surgeries in the abdominal cavity, the Laparo-Endoscopic Single-site Surgery (LESS) can be performed through a single incision in the navel, reducing blood loss, post-operative trauma, and improving the cosmetic outcome. However, LESS results in less intuitive instrument control, impaired ergonomic, loss of depth and haptic perception, and restriction of instrument positioning by a single incision. Robot-assisted surgery addresses these shortcomings, by introducing highly articulated, flexible robotic instruments, ergonomic control consoles with 3D visualization, and intuitive instrument control algorithms. The flexible robotic instruments are usually introduced into the abdomen via a rigid straight port, such that the positioning of the tools and therefore the accessibility of anatomical structures is still constrained by the incision location. To address this limitation, articulated ports for LESS are proposed by recent research works. However, they focus on only a few aspects, which are relevant to the surgery, such that a design considering all requirements for LESS has not been proposed yet. This partially originates in the lack of anatomical data of specific applications. Further, no general design guidelines exist and only a few evaluation metrics are proposed. To target these challenges, this thesis focuses on the design of an articulated robotic port for LESS partial nephrectomy. A novel approach is introduced, acquiring the available abdominal workspace, integrated into the surgical workflow. Based on several generated patient datasets and developed metrics, design parameter optimization is conducted. Analyzing the surgical procedure, a comprehensive requirement list is established and applied to design a robotic system, proposing a tendon-driven continuum robot as the articulated port structure. Especially, the aspects of stiffening and sterile design are addressed. In various experimental evaluations, the reachability, the stiffness, and the overall design are evaluated. The findings identify layer jamming as the superior stiffening method. Further, the articulated port is proven to enhance the accessibility of anatomical structures and offer a patient and incision location independent design.
title: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 15, Nr. 3 (1931)
title: Germania
titleType: AlternativeTitle
Creators: name: Germania : Anzeiger Der Römisch-Germanischen Kommission Des Deutschen Archäologischen Instituts
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2016

description: Der mesolithische Fundplatz Kirchdorf bei Uchte i/Hann...137-142
Die ältesten Schlüssel...142-145
Befestigte Hallstattsiedlung auf dem Kirchberg bei Schmähingen (B. A. Nördlingen)...145-147
Zwei Mittellatènegräber mit Brandbestattung von Nieder-Olm (Rheinhessen)...148-150
Zu den keltischen Schwertern mit Knollenknauf...150-153
Die große Urmitzer Erdfestung neolithisch oder caesarisch?...153-156
Neues vom Lager bei Kneblinghausen?...157-163
Ein römisches Relief aus Rottenburg...163-166
Saplutius...166-169
Kastenbeschlag mit christlicher Darstellung aus Köln...169-175
Ein neues Gagatmedaillon aus Köln...175-177
Ein Pantheus-Ring aus Osterburken...177-179
Bemerkungen zu den sogenannten Reibschalen...179-180
Die fränkische Goldfibel von Mölsheim (Rheinhessen)...180-182
Die Herkunft der Fibel von Mölsheim (Rheinhessen)...182-190
Kleine Mitteilungen...190-193
Besprechungen...194-209
Neuerscheinungen...209-216
Commutative Quaternion Matrices
Creators: name: Kösal, Hidayet Hüda
name: Tosun, Murat
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: In this study, we introduce the concept of commutative quaternions and commutative quaternion matrices. Firstly, we give some properties of commutative quaternions and their Hamilton matrices. After that we investigate commutative quaternion matrices using properties of complex matrices. Then we define the complex adjoint matrix of commutative quaternion matrices and give some of their properties.
Eine Studie zum römischen Gräberfeld von Faimingen, Kr. Dillingen (Donau)
Creators: name: Hübener, Wolfgang
Publisher: name: Verlag des Römisch-Germanischen Zentralmuseums Mainz
Year: 2017

description: [nicht vorhanden / not available]
description: Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, Bd. 10 (1963)
Wortschatz in der Werkstatt. Vier empirische Forschungsprojekte zur Professionalisierung der beruflichen Selbstreflexion im Studium
Creators: name: Sauer, Jochen
name: Baden, Vanessa
name: Bockermann, Pia
name: Engelbrecht, Vanessa
name: Neufeld, Peter
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: In dem Artikel „Wortschatz in der Werkstatt. Vier empirische Forschungsprojekte zur Professionalisierung der beruflichen Selbstreflexion im Studium“ von Jochen Sauer, Vanessa Baden, Pia Bockermann, Vanessa Engelbrecht, Peter Neufeld werden verschieden Strategien zum Erlenen von Vokabeln auf ihre Effizienz hin untersucht. Unter anderem wird hierbei auf das Erstellen von Lernhilfen, das Konzept des „Bewegten Lernens“ und der Einsatz von Vokabelspielen im Lateinunterricht eingegangen.
description: Pegasus-Onlinezeitschrift, Bd. 16: Pegasus-Onlinezeitschrift
title: Effectiveness of philosophy programmes on rehabilitative outcomes for people in prison and their potential to improve metacognitive functioning in this population – a scoping review protocol
Creators: name: Kane, Eddie
name: Evans, Emily
name: Gois, Isabel
name: Doney, Liz
Publisher: name: OSF Registries
Year: 2023
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion
subject: Arts and Humanities
subject: Education
subject: Social and Behavioral Sciences

description: The objective of this scoping review is firstly to identify and report research evidence, nationally and internationally, on the impact of philosophy programmes in prison on rehabilitative outcomes, and secondly to consider, where possible, which interventions or aspects of those interventions facilitate or instead hinder their effectiveness. This will enable providers to adopt the most effective methods when developing and implementing such programmes. Additionally, this scoping review aims to support further research development by identifying gaps in knowledge.
A new method based on noise counting to monitor the frontend electronics of the LHCb muon detector
Creators: name: Anderlini, L.
name: Nobrega, R. Antunes
name: Bonivento, W.
name: Gruber, L.
name: Kashchuk, A.
name: Levitskaya, O.
name: Maev, O.
name: Martellotti, G.
name: Penso, G.
name: Pinci, D.
name: Sarti, A.
name: Schmidt, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A new method has been developed to check the correct behaviour of the frontend electronics of the LHCb muon detector. This method is based on the measurement of the electronic noise rate at different thresholds of the frontend discriminator. The method was used to choose the optimal discriminator thresholds. A procedure based on this method was implemented in the detector control system and allowed the detection of a small percentage of frontend channels which had deteriorated. A Monte Carlo simulation has been performed to check the validity of the method.
title: Endangered Species Act Section 7 Biological and Conference Opinion and Magnsuon-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation on United States Coast Guard Federal Aids to Navigation Program
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2018

description: ESA Section 7 Consultation ; OPR-2015-00004
Raumrezeption des Imperium Romanum – Analyse und didaktische Bewertung geographischer Bezüge in lateinischen Lehrbüchern
Creators: name: Tarantino, Daria
Publisher: name: Pegasus-Onlinezeitschrift
Year: 2017

description: In ihrem Artikel „Raumrezeption des Imperium Romanum – Analyse und didaktische Bewertung geographischer Bezüge in lateinischen Lehrbüchern“ untersucht Daria Tarantino den Nutzen von landeskundlichen Informationen vor allem in Bezug auf ein besseres Textverständnis in den Lehrbüchern „Actio“, „Prima Nova“, „Via Mea“ und „Viva“.
description: Pegasus-Onlinezeitschrift, Bd. 16: Pegasus-Onlinezeitschrift
title: The International sampling program: Continent of origin and biological characteristics of Atlantic salmon collected at West Greenland in 2017
Creators: name: Sheehan, Timothy F.
name: Barber, Jill
name: Dean, Audrey
name: Deschamps, Denise
name: Gargan, Paddy
name: Goulette, Graham
name: Maxwell, Hugo
name: Tavner, Ida
name: Nygaard, Rasmus
name: Bradbury, Ian R.
name: Robertson, Martha J.
name: Ó Maoiléidigh, Niall
Publisher: name: Northeast Fisheries Science Center (U.S.)
Year: 2019

description: Northeast Fisheries Science Center reference document ; 19-12
Diastolic and isoperimetric inequalities on surfaces
Creators: name: Balacheff, Florent
name: Sabourau, Stéphane
Publisher: name: arXiv
Year: 2024
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 53C23, 53C20, 58E10

description: We prove a universal inequality between the diastole, defined using a minimax process on the one-cycle space, and the area of closed Riemannian surfaces. Roughly speaking, we show that any closed Riemannian surface can be swept out by a family of multi-loops whose lengths are bounded in terms of the area of the surface. This diastolic inequality, which relies on an upper bound on Cheeger's constant, yields an effective process to find short closed geodesics on the two-sphere, for instance. We deduce that every Riemannian surface can be decomposed into two domains with the same area such that the length of their boundary is bounded from above in terms of the area of the surface. We also compare various Riemannian invariants on the two-sphere to underline the special role played by the diastole.
description: Accepted version for publication, 27 pages, 3 figures
Post-Newtonian Description of Quantum Systems in Gravitational Fields
Creators: name: Schwartz, Philip Klaus
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: quantum systems under gravity
subject: post-Newtonian expansion
subject: post-Newtonian gravity
subject: Quantensysteme unter Gravitation
subject: post-Newton’sche Entwicklung
subject: post-Newton’sche Gravitation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: This thesis deals with the systematic treatment of quantum-mechanical systems situated in post-Newtonian gravitational fields. At first, we develop a framework of geometric background structures that define the notions of a post-Newtonian expansion and of weak gravitational fields. Next, we consider the description of single quantum particles under gravity, before continuing with a simple composite system. Starting from clearly spelled-out assumptions, our systematic approach allows to properly derive the post-Newtonian coupling of quantum-mechanical systems to gravity based on first principles. This sets it apart from other, more heuristic approaches that are commonly employed, for example, in the description of quantum-optical experiments under gravitational influence. Regarding single particles, we compare simple canonical quantisation of a free particle in curved spacetime to formal expansions of the minimally coupled Klein–Gordon equation, which may be motivated from the framework of quantum field theory in curved spacetimes. Specifically, we develop a general WKB -like post-Newtonian expansion of the Klein–Gordon equation to arbitrary order in the inverse of the velocity of light. Furthermore, for stationary spacetimes, we show that the Hamiltonians arising from expansions of the Klein–Gordon equation and from canonical quantisation agree up to linear order in particle momentum, independent of any expansion in the inverse of the velocity of light. Concerning the topic of composite systems, we perform a fully detailed systematic derivation of the first order post-Newtonian quantum Hamiltonian describing the dynamics of an electromagnetically bound two-particle system which is situated in external electromagnetic and gravitational fields. This calculation is based on previous work by Sonnleitner and Barnett, which we significantly extend by the inclusion of a weak gravitational field as described by the Eddington–Robertson parametrised post-Newtonian metric. In the last, independent part of the thesis, we prove two uniqueness results characterising the Newton–Wigner position observable for Poincaré-invariant classical Hamiltonian systems: one is a direct classical analogue of the well-known quantum Newton–Wigner theorem, and the other clarifies the geometric interpretation of the Newton–Wigner position as ‘centre of spin’, as proposed by Fleming in 1965.
A toy model to test the accuracy of cosmological N-body simulations
Creators: name: Labini, Francesco Sylos
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The evolution of an isolated over-density represents a useful toy model to test the accuracy of a cosmological N-body code in the non linear regime as it is approximately equivalent to that of a truly isolated cloud of particles, with same density profile and velocity distribution, in a non expanding background. This is the case as long as the system size is smaller than the simulation box side, so that its interaction with the infinite copies can be neglected. In such a situation, the over-density rapidly undergoes to a global collapse forming a quasi stationary state in virial equilibrium. However, by evolving the system with a cosmological code (GADGET) for a sufficiently long time, a clear deviation from such quasi-equilibrium configuration is observed. This occurs in a time t_{LI} that depends on the values of the simulation numerical parameters such as the softening length and thetime-stepping accuracy, i.e. it is a numerical artifact related to the limited spatial and temporal resolutions. The analysis of the Layzer-Irvine cosmic energy equation, confirms that this deviation corresponds to an unphysical dynamical regime. By varying the numerical parameters of the simulation and the physical parameters of the system we show that the unphysical behaviour originates from badly integrated close scatterings of high velocity particles. We find that, while the structure may remain virialized in the unphysical regime, its density and velocity profiles are modified with respect to the quasi-equilibrium configurations, converging however to well defined shapes, the former characterised by a Navarro Frenk White-type behaviour.
description: 19 pages, 21 figures. Astronomy and Astrophysics in the press
Analyse der zellulären Seneszenz renaler Tubuluszellen und deren spezifischer Beeinflussung durch siRNA vermittelten Knockdown der Schlüsselkomponenten p53 und p16INK4a in verschiedenen Mausmodellen in vitro und in vivo
Creators: name: Berkenkamp, Birgit
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Kidney
subject: Senescence
subject: RNA interference
subject: Niere
subject: Seneszenz
subject: RNA-Interferenz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: Eine durchschnittliche Lebenserwartung von nur 30 Jahren wurde von der Weltbevölkerung Schätzungen zufolge noch vor 100 Jahren erreicht. Im Jahr 2016 betrug sie, unter anderem durch medizinischen Fortschritt, bereits 72 Jahre. Das bedeutet nicht, dass die Menschen heute gesünder sind als ihre Eltern, denn auch altersassoziierte Krankheiten wichtiger Organe wie der Niere nehmen zu. Die glomeruläre Filtrationsrate (GFR) als Maß für die Nierenfunktion sinkt jährlich um 1 ml/min allein aufgrund des Alterungsprozesses, weitere Faktoren wie Ischämie während Operationen verschlechtern die GFR zusätzlich. Therapieoptionen werden dringend benötigt. Seneszente Zellen akkumulieren hauptsächlich im Tubulus der Niere und stören die Organhomöostase. Mithilfe verschiedener Tiermodelle wird in der vorliegenden Arbeit die zelluläre Seneszenz der Tubuluszellen in vitro und in vivo untersucht und die Methode der RNA-Interferenz als Therapieoption evaluiert.
Deep Continuous Networks
Creators: name: Tomen, Nergis
name: Pintea, Silvia L.
name: van Gemert, Jan C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: CNNs and computational models of biological vision share some fundamental principles, which opened new avenues of research. However, fruitful cross-field research is hampered by conventional CNN architectures being based on spatially and depthwise discrete representations, which cannot accommodate certain aspects of biological complexity such as continuously varying receptive field sizes and dynamics of neuronal responses. Here we propose deep continuous networks (DCNs), which combine spatially continuous filters, with the continuous depth framework of neural ODEs. This allows us to learn the spatial support of the filters during training, as well as model the continuous evolution of feature maps, linking DCNs closely to biological models. We show that DCNs are versatile and highly applicable to standard image classification and reconstruction problems, where they improve parameter and data efficiency, and allow for meta-parametrization. We illustrate the biological plausibility of the scale distributions learned by DCNs and explore their performance in a neuroscientifically inspired pattern completion task. Finally, we investigate an efficient implementation of DCNs by changing input contrast.
description: Presented at ICML 2021
Gestaltung nachhaltiger Logistik-Konzepte im urbanen Wirtschaftsverkehr : Entscheidungsunterstützung mit Optimierungsmodellen
Creators: name: Leyerer, Max
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: Informationssystem-Forschung
subject: Operations Research
subject: Optimierung
subject: Entscheidungsunterstützungssysteme
subject: Design Science Research
subject: Green IS
subject: Nachhaltigkeit
subject: Urbane Logistik
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: Die vorliegende kumulative Dissertation stellt die Zusammenfassung von zehn wissenschaftlichen Artikeln im Bereich des urbanen Wirtschaftsverkehrs dar. Dabei geht es grundsätzlich um die Untersuchung neuer Logistik-Konzepte als Lösungsansatz für eine gleichzeitige Berücksichtigung ökonomischer und ökologischer Ziele bei der Ausübung von Transportaktivitäten in urbanen Räumen. Dazu werden mathematische Optimierungsmodelle und Entscheidungsunterstützungssysteme präsentiert, welche den Zielkonflikt zwischen einer Kosten- und einer Emissionsminimierung adressieren. Diese sind durch die Anwendung von Methoden des Operations Research und der Informationssystem-Forschung entstanden. Darüber hinaus erfolgt die kritische Reflektion über die behandelten Themen, die genutzten Forschungsmethoden und die entwickelten Lösungsansätze. Drei Themen werden in der Dissertation ausführlich dargestellt: (1) Nachhaltige urbane Paketzustellung: Es wird ein Optimierungsmodell präsentiert, welches in ein Entscheidungsunterstützungssystem eingebettet ist und die bestmögliche Gestaltung eines alternativen Logistik-Konzepts für die Zustellung von Paketen in Städten ermöglicht. Dabei geht es um die Bestimmung der Positionen von Mikro-Depots als Orte der Zwischenlagerung sowie der dazugehörigen Fahrzeugflotte. (2) Nachhaltige e-Grocery Zustellung: Für die Lieferung von online bestellten Verbrauchsgütern wie Lebensmitteln oder Haushaltsartikeln wird ein neues Logistik-Konzept entworfen. Hierbei erfolgt eine Verkürzung der letzten Meile durch den Einsatz von temperierten Umschlagspunkten sowie eine Integration von Lastenfahrrädern und Kunden-Selbstabholungen. Ein dreistufiger Lösungsansatz ermöglicht die Optimierung der Standorte der Umschlagspunkten sowie der Fahrzeugrouten. (3) Individuelle Routenoptimierung: Es wird ein Entscheidungsunterstützungssystem zur Modellierung sowie Lösung von individualisierbaren Tourenplanungsproblemen präsentiert. Das flexible Tool ermöglicht die Abbildung von benutzerspezifischen Problemcharakteristika und die Umwandlung in ein entsprechendes Optimierungsmodell, sodass diverse Branchen bei der Routenplanung unterstützt werden können.
Biosynthesis of fungal alkyl citrates and polyketides
Creators: name: Yin, Sen
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2020
Subjects: subject: byssochlamic acid
subject: biosynthesis
subject: domain swap
subject: Viridiofungin
subject: Biosynthese
subject: PKS
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Das Hauptaugenmerk der vorgestellten Arbeit lag auf dem Verständnis des Biosynthesewegs von Viridofungin, der Untersuchung der enzymatischen Eigenschaften der Schlüsselenzyme aus dem Byssochlaminsäure-Weg und der Entwicklung der PKS von Tenellin. In einer kombination aus genetischen und chemischen experimenten Ansatz wurden der Biosyntheseweg von Viridiofungin und die Funktionen von Enzymen aus dem Byssochlaminsäure-Weg sowie die Programmierung des Tenellin-PKS (TENS) -Systems aufgeklärt. Das Trichoderma-virid MF5628 wurde zunächst durch Illumina- und Oxford-Nanoporen-Sequenzierung genomsequenziert. Es wurde unter Verwendung einer Kombination aus gezielter Gen-Knockout- und RNA-Interference-basierter Stummschaltung im nativen Organismus ein neuer, nicht veröffentlicht Biosyntheseweg identifiziert, an dem eine tRNA-Ligase beteiligt ist. Es wurde festgestellt, dass ein Citrat-Synthase-ähnliches Enzym und ein tRNA-Ligase-ähnliches Enzym für die Biosynthese von Viridiofungin essentiell sind. Die Biosynthese von Byssochlaminsäure wurde durch Proteinexpression und in-vitro-Studie enukleiert. Eine Hydrolase, Citrat-Synthase, zwei 2-Methylcitrat-Dehydratase, zwei KSIs und zwei PEBPs-Proteine wurden in E. coli und Hefe exprimiert. Während der Maleinsäureanhydridmonomer Biosynthese kann eine Hydrolase die Hexaketidform vom ACP hydrolysieren. Die Citrat-Synthase kann Hexaketid-CoA und Oxalacetat als Substrat verwenden, um (2S, 3R) -Citrat zu bilden. 2-Methylcitrat-Dehydratase nimmt (2S, 3R) -Citrat-Diasteroisomer als Substrat, um ein 2, 3-Alken im Produkt zu bilden, und das Produkt kann ein spontan cyclisiertes Maleinsäureanhydridmonomer bilden. Zwei KSI verwenden schließlich Maleinsäureanhydrid-monomer, um das dimerisierte Produkt Byssochlaminsäure zu bilden. PEBP-Enzyme sind nicht der Katalyse der Dimerisierung beteiligt. Basierend auf dem KR-Domain-Swap-Experiment mit TenS wurde die Kettenlängenprogrammierung in TenS aufgeklärt. Sechs KR-Domänen-Subfragmente, die mit den homologen Fragmenten der Hexaketid-Desmethylbassianin-Synthase (DMBS) und drei mit der Heptaketid-Militarinon-Synthase (MILS) ausgetauscht wurden, führten zur Synthese unterschiedlicher Kettenlängen von Polyketid-Produkten. Insbesondere der MILS KR-Domänenaustausch führte zur Synthese von Penta, Hexa und Heptaketiden. Die Ergebnisse dieser und vorherger Experimente in unserer Gruppe werden einbezogen, indem die Existenz einer Konkurrenz zwischen den CMeT- und KR-Domänen berücksichtigt wird.