cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Nitric Oxide in the Control of the in vitro Proliferation and Differentiation of Human Hematopoietic Stem and Progenitor Cells
Creators: name: Hümmer, Julia
name: Kraus, Saskia
name: Brändle, Katharina
name: Lee-Thedieck, Cornelia
Publisher: name: Lausanne : Frontiers Media
Year: 2021
Subjects: subject: nitric oxide
subject: hematopoietic stem cells
subject: proliferation
subject: differentiation
subject: gasotransmitter
subject: ROS/RNS
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Hematopoietic stem and progenitor cell (HSPC) transplantation is the best-studied cellular therapy and successful in vitro control of HSPCs has wide clinical implications. Nitric oxide (NO) is a central signaling molecule in vivo and has been implicated in HSPC mobilization to the blood stream in mice. The influence of NO on HSPC behavior in vitro is, however, largely obscure due to the variety of employed cell types, NO administration systems, and used concentration ranges in the literature. Additionally, most studies are based on murine cells, which do not necessarily mimic human HSPC behavior. Thus, the aim of the present study was the systematic, concentration-dependent evaluation of NO-mediated effects on human HSPC behavior in vitro. By culture in the presence of the long-term NO donor diethylenetriamine/nitric oxide adduct (DETA/NO) in a nontoxic concentration window, a biphasic role of NO in the regulation of HSPC behavior was identified: Low DETA/NO concentrations activated classical NO signaling, identified via increased intracellular cyclic guanosine monophosphate (cGMP) levels and proteinkinases G (PKG)-dependent vasodilator-stimulated phosphoprotein (VASP) phosphorylation and mediated a pro-proliferative response of HSPCs. In contrast, elevated NO concentrations slowed cell proliferation and induced HSPC differentiation. At high concentrations, s-nitrosylation levels were elevated, and myeloid differentiation was increased at the expense of lymphoid progenitors. Together, these findings hint at a central role of NO in regulating human HSPC behavior and stress the importance and the potential of the use of adequate NO concentrations for in vitro cultures of HSPCs, with possible implications for clinical application of in vitro expanded or differentiated HSPCs for cellular therapies.
title: Александра Васильевна Суперанская (1929–2013): страницы жизни и творчества
Creators: name: Васильева, Наталья
Publisher: name: Новгородский печатный двор
Year: 2019

description: Доклад посвящен 90-летию со дня рождения А.В. Суперанской – ключевой фигуры отечественной ономастики. Биографические данные дополняются анализом малоизвестных трудов А.В. Суперанской, написанных в последние годы жизни, в том числе пока еще не изданной мемуарной прозы.
title: Прописная и строчная буквы в многокомпонентных топонимах
Creators: name: Дамбуев, Игорь
Publisher: name: Новгородский печатный двор
Year: 2019

description: В статье на материале Государственного каталога географических названий, нормативно-правовых актов и топографических карт анализируется употребление прописной и строчной буквы в многокомпонентных топонимах. Отмечается несогласованность в написании топонимов, вызванная кодификационными лакунами. Предлагается понятие квазитопонима в целях совершенствования действующих правил написания топонимов.
Funktionsanalyse einzelner Motormoleküle mittels der kombinierten Mikronadel/Laserfallen-Technik
Creators: name: Ruff, Christine
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Microneedle/lasertrap transducer
subject: single molecule measurements
subject: Myosin
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
title: Uniform und Eigensinn. Zur Kenntlichkeit verzerrt
Creators: name: Hohnholz, Sabine
name: Röske, Thomas
name: Rotzoll, Maike
Publisher: name: University Library Heidelberg
Year: 2014

description: Die Heidelberger Sammlung Prinzhorn bewahrt rund 6.000 künstlerische Werke, die zwischen den Jahren 1845 und 1930 in psychiatrischen Anstalten entstanden sind. Der Bestand ist eine einzigartige historische Quelle für ein ebenso einzigartiges Projekt: Derzeit wertet ein interdisziplinäres Forscherteam die Kunstwerke der Patienten nach Reaktionen auf Militarismus und Ersten Weltkrieg aus. Dabei zeigt sich, dass die eigenwilligen künstlerischen Antworten der Anstaltsinsassen ein weites Spektrum gesellschaftlicher Stimmungen und Einstellungen widerspiegeln, die sie bündeln und konzentrieren und damit „zur Kenntlichkeit verzerren“.
description: Ruperto Carola, Nr. 4 (2014): Krieg & Frieden, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Untersuchungen zur assoziativen Ionisation von Atomen und Molekülen und zu anderen Ionisationsprozessen in Stößen mit Wasserstoff-Atomen
Creators: name: Wilhelms, Peter
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2001
Subjects: subject: Associative ionization
subject: atom-atom-collisions
subject: charge producing collisions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Coevolving Cellular Automata with Memory for Chemical Computing: Boolean Logic Gates in the B-Z Reaction
Creators: name: Stone, Christopher
name: Toth, Rita
name: Costello, Ben de Lacy
name: Bull, Larry
name: Adamatzky, Andrew
Publisher: name: arXiv
Year: 2012
Subjects: subject: Emerging Technologies (cs.ET)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We propose that the behaviour of non-linear media can be controlled automatically through coevolutionary systems. By extension, forms of unconventional computing, i.e., massively parallel non-linear computers, can be realised by such an approach. In this study a light-sensitive sub-excitable Belousov-Zhabotinsky reaction is controlled using various heterogeneous cellular automata. A checkerboard image comprising of varying light intensity cells is projected onto the surface of a catalyst-loaded gel resulting in rich spatio-temporal chemical wave behaviour. The coevolved cellular automata are shown to be able to control chemical activity through dynamic control of the light intensity. The approach is demonstrated through the creation of a number of simple Boolean logic gates.
Salix caprea
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. caprea X cmerea - l: Les Vouzes bei Salvan, 950 m (Coquoz 1921).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Magnetization and spin dynamics of the spin S=1/2 hourglass nanomagnet Cu5(OH)2(NIPA)4*10H2O
Creators: name: Nath, R.
name: Tsirlin, A. A.
name: Khuntia, P.
name: Janson, O.
name: Foerster, T.
name: Padmanabhan, M.
name: Li, J.
name: Skourski, Yu.
name: Baenitz, M.
name: Rosner, H.
name: Rousochatzakis, I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report a combined experimental and theoretical study of the spin S=1/2 nanomagnet Cu5(OH)2(NIPA)4*10H2O (Cu5-NIPA). Using thermodynamic, electron spin resonance and 1H nuclear magnetic resonance measurements on one hand, and ab initio density-functional band-structure calculations, exact diagonalizations and a strong coupling theory on the other, we derive a microscopic magnetic model of Cu5-NIPA and characterize the spin dynamics of this system. The elementary five-fold Cu2+ unit features an hourglass structure of two corner-sharing scalene triangles related by inversion symmetry. Our microscopic Heisenberg model comprises one ferromagnetic and two antiferromagnetic exchange couplings in each triangle, stabilizing a single spin S=1/2 doublet ground state (GS), with an exactly vanishing zero-field splitting (by Kramer's theorem), and a very large excitation gap of Δ~68 K. Thus, Cu5-NIPA is a good candidate for achieving long electronic spin relaxation (T1) and coherence (T2) times at low temperatures, in analogy to other nanomagnets with low-spin GS's. Of particular interest is the strongly inhomogeneous distribution of the GS magnetic moment over the five Cu2+ spins. This is a purely quantum-mechanical effect since, despite the non-frustrated nature of the magnetic couplings, the GS is far from the classical collinear ferrimagnetic configuration. Finally, Cu5-NIPA is a rare example of a S=1/2 nanomagnet showing an enhancement in the nuclear spin-lattice relaxation rate 1/T1 at intermediate temperatures.
description: 18 pages, 16 figures, 3 tables
Russeting in Apple Is Initiated After Exposure to Moisture Ends—I. Histological Evidence
Creators: name: Chen, Yun-Hao
name: Straube, Jannis
name: Khanal, Bishnu P.
name: Knoche, Moritz
name: Debener, Thomas
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Cuticle
subject: Malus √ó domestica
subject: Periderm
subject: Russeting
subject: Strain
subject: Surface moisture
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: Russeting (periderm formation) is a critical fruit-surface disorder in apple (Malus √ó domestica Borkh.). The first symptom of insipient russeting is cuticular microcracking. Humid and rainy weather increases russeting. The aim was to determine the ontogeny of moisture-induced russeting in ‚ÄòPinova‚Äô apple. We recorded the effects of duration of exposure to water and the stage of fruit development at exposure on microcracking, periderm formation and cuticle deposition. Early on (21 or 31 days after full bloom; DAFB) short periods (2 to 12 d) of moisture exposure induced cuticular microcracking‚Äîbut not later on (66 or 93 DAFB). A periderm was not formed during moisture exposure but 4 d after exposure ended. A periderm was formed in the hypodermis beneath a microcrack. Russeting frequency and severity were low for up to 4 d of moisture exposure but increased after 6 d. Cuticle thickness was not affected by moisture for up to 8 d but decreased for longer exposures. Cuticular ridge thickness decreased around a microcrack. In general, moisture did not affect cuticular strain release. We conclude that a hypodermal periderm forms after termination of moisture exposure and after microcrack formation. Reduced cuticle deposition may cause moisture-induced microcracking and, thus, russeting. ¬© 2020 by the authors. Licensee MDPI, Basel, Switzerland.
title: Das Ich und die Welt. Ein relativer Dialog
Creators: name: Monyer, Hannah
name: Fiedler, Klaus
Publisher: name: University Library Heidelberg
Year: 2014

description: Informationen überfluten uns, schon bevor wir geboren werden, bewusst oder auch unbewusst begeben wir uns in einen Dialog mit der Welt. Unentwegt müssen wir Impulse von „draußen“ verarbeiten und „drinnen“ mit unserem Wissen und unseren Vorstellungen, die wir von klein auf ausbilden, in Einklang bringen. Die beiden Antagonisten „draußen“ und „drinnen“ kennzeichnen gleichermaßen auch historische und moderne Gesellschaften: Es gibt – in unterschiedlichem Ausmaß – in jeder Gesellschaft Gruppen, denen die soziale oder politische Teilhabe verwehrt ist. Ebenso unterschiedlich wie die Gründe hierfür sind die Auswirkungen der Ausgrenzung, und nicht immer sind sie sichtbar. Über die Dialektik von „draußen“ und „drinnen“, die Bedeutung für unser Selbstbild und unsere Interaktionen in und mit der Welt diskutieren die Neurobiologin Hannah Monyer und der Sozialpsychologe Klaus Fiedler. Dabei zeigt sich, wie hochgradig relativ beide Begriffe sind.
description: Ruperto Carola, Nr. 5 (2014): Draußen & Drinnen, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Measurement-device-independent quantum key distribution with quantum memories
Creators: name: Abruzzo, Silvestre
name: Kampermann, Hermann
name: Bruß, Dagmar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We generalize measurement-device-independent quantum key distribution [ H.-K. Lo, M. Curty, and B. Qi, Phys. Rev. Lett. 108, 130503 (2012) ] to the scenario where the Bell-state measurement station contains also heralded quantum memories. We find analytical formulas, in terms of device imperfections, for all quantities entering in the secret key rates, i.e., the quantum bit error rate and the repeater rate. We assume either single-photon sources or weak coherent pulse sources plus decoy states. We show that it is possible to significantly outperform the original proposal, even in presence of decoherence of the quantum memory. Our protocol may represent the first natural step for implementing a two-segment quantum repeater.
Variation of glucosinolate contents in clubroot-resistant and-susceptible brassica napus cultivars in response to virulence of plasmodiophora brassicae
Creators: name: Zamani-Noor, Nazanin
name: Hornbacher, Johann
name: Comel, Christel Joy
name: Papenbrock, Jutta
Publisher: name: Basel : MDPI AG
Year: 2021
Subjects: subject: Aliphatic
subject: Aromatic and indolic glucosinolates
subject: Clubroot severity index
subject: Oilseed rape
subject: Pathotype
subject: Physiological race
subject: Polygenic resistance
subject: 4-methoxygluco-brassicin
subject: auxin
subject: glucoalyssin
subject: glucobrassicin
subject: gluconapoleiferin
subject: glucosinolate
subject: neoglucobrassicin
subject: plant extract
subject: progoitrin
subject: unclassified drug
subject: clubroot disease
subject: controlled study
subject: disease predisposition
subject: disease resistance
subject: disease severity
subject: disease severity assessment
subject: gene expression
subject: gene mapping
subject: high performance liquid chromatography
subject: homeostasis
subject: immune response
subject: incidence
subject: nonhuman
subject: pathotype
subject: plant growth
subject: plant immunity
subject: plant leaf
subject: plant root
subject: Plasmodiophora brassicae
subject: rapeseed
subject: signal transduction
subject: virulence
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: The present study investigated the changes in total and individual glucosinolates (GSLs) in roots and leaves of different clubroot-resistant and -susceptible oilseed rape cultivars following artificial inoculation with Plasmodiophora brassicae isolates with different virulence. The results showed significant differences in clubroot incidence and severity as well as in the amount of total and individual glucosinolates between oilseed rape cultivars in response to virulence of the pathogen. Single among with total aliphatic and total indolic glucosinolate contents were significantly lower in leaves of susceptible cultivars compared to resistant ones due to the infection. Similarly, single and total aliphatic as well as indolic glucosinolate contents in roots were lower in susceptible cultivars compared to resistant cultivars analyzed. The different isolates of P. brassicae seem to differ in their ability to reduce gluconasturtiin contents in the host. The more aggressive isolate P1 (+) might be able to suppress gluconasturtiin synthesis of the host in a more pronounced manner compared to the isolate P1. A possible interaction of breakdown products of glucobrassicin with the auxin receptor transport inhibitor response 1 (TIR1) is hypothesized and its possible effects on auxin signaling in roots and leaves of resistant and susceptible cultivars is discussed. A potential interplay between aliphatic and indolic glucosinolates that might be involved in water homeostasis in resistant cultivars is explained. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
title: Editorial
Creators: name: Eitel, Bernhard
Publisher: name: University Library Heidelberg
Year: 2014

description: Heidelberger Wissenschaftlerinnen und Wissenschaftler untersuchen Fragen zum Beispiel der Identitätsbildung und wie sich unser Ich im Verhältnis zur Welt konstituiert, soziale und politische Dynamiken von Integration und Ausgrenzung sowie die Zusammenhänge von Sprache und Migration.
description: Ruperto Carola, Nr. 5 (2014): Draußen & Drinnen, Beginn und Erscheinungsfrequenz: Nummer: 1, Jahr: 2012, Ausgaben pro Band: 2
Uncovering the Role of Bicarbonate in Calcium Carbonate Formation at Near-Neutral pH
Creators: name: Huang, Yu-Chieh
name: Rao, Ashit
name: Huang, Shing-Jong
name: Chang, Chun-Yu
name: Drechsler, Markus
name: Knaus, Jennifer
name: Chan, Jerry Chun Chung
name: Raiteri, Paolo
name: Gale, Julian D.
name: Gebaue, Denis
Publisher: name: Weinheim : Wiley-VCH
Year: 2021
Subjects: subject: amorphous materials
subject: bicarbonate
subject: calcium carbonate
subject: mineral nucleation
subject: NMR spectroscopy
subject: Calcite
subject: Calcium carbonate
subject: Carbonate minerals
subject: Crystallization
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Mineralogy
subject: Molecular dynamics
subject: Nuclear magnetic resonance spectroscopy
subject: Nucleation
subject: Quantum theory
subject: Amorphous minerals
subject: Calcium carbonate formation
subject: Geological environment
subject: Mechanistic pathways
subject: Molecular dynamics simulations
subject: Quantum-mechanical calculation
subject: Solid state nuclear magnetic resonance spectroscopy
subject: Structural component
subject: Ions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Mechanistic pathways relevant to mineralization are not well-understood fundamentally, let alone in the context of their biological and geological environments. Through quantitative analysis of ion association at near-neutral pH, we identify the involvement of HCO3− ions in CaCO3 nucleation. Incorporation of HCO3− ions into the structure of amorphous intermediates is corroborated by solid-state nuclear magnetic resonance spectroscopy, complemented by quantum mechanical calculations and molecular dynamics simulations. We identify the roles of HCO3− ions as being through (i) competition for ion association during the formation of ion pairs and ion clusters prior to nucleation and (ii) incorporation as a significant structural component of amorphous mineral particles. The roles of HCO3− ions as active soluble species and structural constituents in CaCO3 formation are of fundamental importance and provide a basis for a better understanding of physiological and geological mineralization. © 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH
Synthetische und theoretische Konzepte zur Totalsynthese der Disorazole
Creators: name: Haustedt, Lars Ole
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Polyketide
subject: disorazole
subject: oxazoles
subject: rational design
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Superintegrable systems with spin invariant with respect to the rotation group
Creators: name: Nikitin, A. G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 81Qxx, 81Rxx

description: Quantum nonrelativistic systems with $2\times2$ matrix potentials are investigated. Physically, they simulate charged or neutral fermions with non-trivial dipole momenta, interacting with an external electric field. Assuming rotationally invariance of the Hamiltonian all such systems allowing second order integrals of motion are identified. It is shown that the integrals of motion can be effectively used to separate variables and to reduce the systems to decoupled ordinary differential equations. Solutions for two of the discussed problems are presented explicitly.
description: 24 pages, some misprints were corrected
Theoretische, messtechnische und anwendungsbezogene Bewertung von U’-bezogenen Energiverbrauchsberechnungen von Gewächshäusern und deren Realisierung in einem Softwaresystem
Creators: name: Langner, Frederik
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2022
Subjects: subject: greenhouse
subject: energy consumption
subject: modeling
subject: HORTEX©
subject: Gewächshaus
subject: Energieverbrauch
subject: Modellierung
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Simulating the energy consumption of greenhouses provides signiﬁcant advantages for planning their construction or estimating the eﬀectiveness of reconstruction measures. A substantial number of models used today derive from a simple model by Kanthak in 1970. To this day neither a theoretical nor a practical comparison of these developments has been conducted. Therefore, this study aims to qualitatively and quantitatively compare four representative models that are based on Kanthak. The best performing model is implemented into a software program. To quantitatively compare models, a test stand was developed. The resulting measurement box was then used to parameterize environmental variables to compare and evaluate the models. The results from the test stand showed that models, which accounted for cloudiness and windspeed, outperformed other models. A model developed by Tantau and Akyazi in 2014 delivered the most accurate results. However, these model prediction accuracies could not be reproduced under applied greenhouse conditions in the ﬁeld. Here, the model developed by Rath in 1992 showed best accuracy. This model was therefore used as the core algorithm in the new iteration of the software system HORTEX© To increase prediction accuracy and to enable future software development, the majority of algorithms and functions in the original HORTEX©were restructured and replaced. The resulting software, distributed by the Eugen Ulmer KG publisher as Hortex 5.0©, contributes to improving the energy consumption of greenhouses.
Cross-Validation for Nonlinear Mixed Effects Models
Creators: name: Colby, Emily
name: Bair, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Methodology (stat.ME)
subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Cross-validation is frequently used for model selection in a variety of applications. However, it is difficult to apply cross-validation to mixed effects models (including nonlinear mixed effects models or NLME models) due to the fact that cross-validation requires "out-of-sample" predictions of the outcome variable, which cannot be easily calculated when random effects are present. We describe two novel variants of cross-validation that can be applied to nonlinear mixed effects models. One variant, where out-of-sample predictions are based on post hoc estimates of the random effects, can be used to select the overall structural model. Another variant, where cross-validation seeks to minimize the estimated random effects rather than the estimated residuals, can be used to select covariates to include in the model. We show that these methods produce accurate results in a variety of simulated data sets and apply them to two publicly available population pharmacokinetic data sets.
description: 38 pages, 15 figures To be published in the Journal of Pharmacokinetics and Pharmacodynamics
Thermal treatment of polyvinyl alcohol for coupling MoS2 and TiO2 nanotube arrays toward enhancing photoelectrochemical water splitting performance
Creators: name: Nguyen, Tho Truong
name: Cao, Thi Minh
name: Balayeva, Narmina O.
name: Pham, Viet Van
Publisher: name: Basel : MDPI AG
Year: 2021
Subjects: subject: MoS2 /TiO2 nan-otube arrays
subject: Oxygen evolution reaction
subject: Photoelectrochemical
subject: Polyvinyl alcohol
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Solar-driven photoelectrochemical (PEC) water splitting, using semiconductor photo-electrodes, is considered a promising renewable energy source and solution for environmental sustainability. Herein, we report polyvinyl alcohol (PVA) as a binder material for combining MoS2 and TiO2 nanotube arrays (TNAs) to improve PEC water splitting ability. By a thermal treatment process, the formation of the π conjunction in the PVA structure enhanced the PEC performance of MoS2 /TNAs, exhibiting linear sweeps in an anodic direction with the current density over 65 µA/cm2 at 0 V vs. Ag/AgCl. Besides, the photoresponse ability of MoS2 /TNAs is approximately 6-fold more significant than that of individual TNAs. Moreover, a Tafel slope of 140.6 mV/decade has been obtained for the oxygen evolution reaction (OER) of MoS2 /TNAs materials. © 2021 by the authLicensee MDPI, Basel, Switzerla.
„Aber dann, mit Familie, ist einfach das Dorfleben viel, viel besser“ : Sinn, Praxis und Materialität in der Konstruktion von Raum und Geschlecht
Creators: name: Tuitjer, Gesine
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Practice-Theories
subject: Rural Studies
subject: Gender Studies
subject: Geschlechterverhältnis
subject: Ländliche Räume
subject: Praxis-Theorien
subject: Ländliche Soziologie
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Die Arbeit analysiert die wechselseitige soziale Konstruktionen von Raum und Geschlecht am Beispiel von Müttern in Dörfern. Unter einer praxistheoretischen Perspektive werden diese Prozesse entlang der Dimensionen von Sinn, Praxis und Materialität untersucht. Die Arbeit baut auf einer breiten empirischen Datenbasis auf, die im Rahmen des Forschungsprojekts „Ländliche Lebensverhältnisse in Wandel 1952, 1972, 1993 und 2012“ gewonnen wurde. Diese umfasst eine standardisierte Befragung (N = 3.177) in 14 Dörfern in Deutschland sowie knapp 60 leitfadengestützte Interviews aus vier Dörfern. Die Arbeit zeigt, wie Geschlecht und Raum, über das Narrativ des "Ländlichen Idyll" hinaus, in der Alltagspraxis konstituiert werden.
Herstellung zelleigener Produkte mittels Escherichia coli in unterschiedlichen Bioreaktorsystemen
Creators: name: De Vries, Ingo
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Good Manufacturing Practice
subject: Polysialinsäure
subject: single-use
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Polysialinsäure (PolySia) ist eine homopolymere Zuckersäure und ein vielversprechendes Molekül für unterschiedliche medizinische Anwendungen. Das Polymer ist ein potentielles Arzneimittel gegen entzündungsbedingte neurodegenerative Erkrankungen (z.B. altersbedingte Makuladegeneration) und andere chronische entzündungsbedingte Erkrankungen. In der vorliegenden Arbeit ist ein kompletter Produktionsprozess für humanidentische α-(2,8)-verknüpfte PolySia unter Verwendung in GMP-Umgebungen akzeptierter single-use Prozesselemente gezeigt. Die Kultivierung erfolgte in einem welleninduziert durchmischten Einweg-Beutel-Reaktor und vergleichend in einem Edelstahlrührkesselreaktor bis zu einem Volumen von 30 Litern. Die schonende welleninduzierte Durchmischung hatte keinen Einfluss auf die PolySia-Ablösung von der Zelloberfläche, 54 ± 7 % der PolySia lag im Kulturüberstand vor (Konzentration: 300,9 ± 19,8 mg/L). Durch einen fed-batch-Prozess konnte die PolySia-Konzentration im Einweg-Beutel-Reaktor auf bis zu 1,05 g/L gesteigert werden. Nach dem Aufreinigungsprozess lag die PolySia langkettig (Polymerisationgrad: 90 – 100 DP) und hoch rein vor (keine Protein- und DNA-Verunreinigungen nachweisbar, Endotoxingehalt < 3 EU/mg). Aus einer 10 L-batch-Kultivierung konnte mit dem entwickelten Prozess etwa 1 g reine PolySia gewonnen werden, dies entspricht einer Ausbeute von 29 ± 7 %. Kurzkettige PolySia für spezielle Anwendungen konnte durch eine thermische Hydrolyse gewonnen werden.
Kinder- und Jugendarbeit auf dem Weg zur Ganztagsschule : Auswirkungen und Zukunftsfähigkeit ; eine empirische Studie
Creators: name: Honisch, Christoph
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Child- and youth work
subject: all-day school
subject: system and social environment
subject: Kinder- und Jugendarbeit
subject: Ganztagsschule
subject: System und Lebenswelt
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::360 | Soziale Probleme, Sozialdienste, Versicherungen
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: [no abstract]
Molekularbiologische und immunbiochemische Charakterisierung der Antigene des monoklonalen Antikörpers TIM-11B2
Creators: name: Rosidi, Bustanur
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Aldolase
subject: glutamine synthetase
subject: pea
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Das kurhannoversche Postpersonal 1736-1803 : ein Beitrag zur Geschichte der sozialen Organisation von Herrschaft, Kommunikation und Verkehr im 18. Jahrhundert
Creators: name: Höper, Lutz
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2013
Subjects: subject: Electorate of Hanover
subject: post staff
subject: sociogenesis
subject: Kurfürstentum Hannover
subject: Postpersonal
subject: Soziogenese
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::380 | Handel, Kommunikation, Verkehr

description: [no abstract]
Studien zur diastereoselektiven Funktionalisierung der Cinchona Alkaloide und Synthese enantiomerenreiner, funktionalisierter 1-Azabicyclo[3.2.2]nonane
Creators: name: Röper, Stefanie
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Cinchona alkaloids
subject: quinuclidines
subject: 1-Azabicyclo[3.2.2]nonanes
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Quantum control of a model qubit based on a multi-layered quantum dot
Creators: name: Ferrón, Alejandro
name: Serra, Pablo
name: Osenda, Omar
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we present a model qubit whose basis states are eigenstates of a multi-layered quantum dot. We show that the proper design of the quantum dot results in qubit states that have excellent dynamical properties when a time-dependent driving is applied to it. In particular, it is shown that a simple sinusoidal driving is sufficient to obtain good quality Rabi oscillations between the qubit states. Moreover, the switching between states can be performed with very low leakage, even under off-resonance conditions. In this sense, the quantum control of the qubit is robust under some perturbations and achieved with simple means.
description: 19 pages, 8 figures
Impact of Apparatus Orientation and Gravity in Electrospinning—A Review of Empirical Evidence
Creators: name: Suresh, Sinduja
name: Becker, Alexander
name: Glasmacher, Birgit
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: electrospinning
subject: apparatus
subject: orientation
subject: gravity
subject: electric field
subject: angle
subject: vertical
subject: horizontal
subject: fibre
subject: jet
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Electrospinning is a versatile fibre fabrication method with applications from textile to tissue engineering. Despite the appearance that the influencing parameters of electrospinning are fully understood, the effect of setup orientation has not been thoroughly investigated. With current burgeoning interest in modified and specialised electrospinning apparatus, it is timely to review the impact of this seldom-considered parameter. Apparatus configuration plays a major role in the morphology of the final product. The primary difference between spinning setups is the degree to which the electrical force and gravitational force contribute. Since gravity is much lower in magnitude when compared with the electrostatic force, it is thought to have no significant effect on the spinning process. But the shape of the Taylor cone, jet trajectory, fibre diameter, fibre diameter distribution, and overall spinning efficiency are all influenced by it. In this review paper, we discuss all these developments and more. Furthermore, because many research groups build their own electrospinning apparatus, it would be prudent to consider this aspect as particular orientations are more suitable for certain applications.
Salix caprea
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. caprea X Elaeagnos- 3: Bagnes (Wolf).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Acceleration Modules in Linear Induction Accelerators
Creators: name: Wang, Shaoheng
name: Deng, Jianjun
Publisher: name: arXiv
Year: 2013
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Linear Induction Accelerator (LIA) is a unique type of accelerator, which is capable to accelerate kiloAmpere charged particle current to tens of MeV energy. The present development of LIA in MHz busting mode and successful application into synchrotron broaden LIAs usage scope. Although transformer model is widely used to explain the acceleration mechanism of LIAs, it is not appropriate to consider the induction electric field as the field which accelerates charged particles for many modern LIAs. Authors examined the transition of the magnetic cores functions during LIA acceleration modules evolution, distinguished transformer type and transmission line type LIA acceleration modules, and reconsidered several related issues based on transmission line type LIA acceleration module. The clarified understanding should be helpful in the further development and design of the LIA acceleration modules.
description: 7 pages, 7 figures
Suppression of Dielectronic Recombination Due to Finite Density Effects
Creators: name: Nikolić, D.
name: Gorczyca, T. W.
name: Korista, K. T.
name: Ferland, G. J.
name: Badnell, N. R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: 00Axx

description: We have developed a general model for determining density-dependent effective dielectronic recombination (DR) rate coefficients in order to explore finite-density effects on the ionization balance of plasmas. Our model consists of multiplying by a suppression factor those highly-accurate total zero-density DR rate coefficients which have been produced from state-of-the-art theoretical calculations and which have been benchmarked by experiment. The suppression factor is based-upon earlier detailed collision-radiative calculations which were made for a wide range of ions at various densities and temperatures, but used a simplified treatment of DR. A general suppression formula is then developed as a function of isoelectronic sequence, charge, density, and temperature. These density-dependent effective DR rate coefficients are then used in the plasma simulation code Cloudy to compute ionization balance curves for both collisionally ionized and photoionized plasmas at very low (ne = 1 cm^-3) and finite (ne=10^10 cm^-3) densities. We find that the denser case is significantly more ionized due to suppression of DR, warranting further studies of density effects on DR by detailed collisional-radiative calculations which utilize state-of-the-art partial DR rate coefficients. This is expected to impact the predictions of the ionization balance in denser cosmic gases such as those found in nova and supernova shells, accretion disks, and the broad emission line regions in active galactic nuclei.
description: main article (27 pages, 7 figures); supporting information (37 pages, 46 figures)
The Spec-Radiation Method for Layered Fluid Media
Creators: name: Schmelt, Andreas Sebastian
name: Twiefel, Jens
Publisher: name: Basel : MDPI
Year: 2022
Subjects: subject: spec-radiation
subject: acoustic holography
subject: non-destructive testing
subject: layered media
subject: flaw detection
subject: Dewey Decimal Classification::600 | Technik

description: The real-time evaluation for non-destructive air-coupled ultrasonic testing of panel materials is a big task for several industries. To make these tests more and more accurate, efficient and reliable calculation methods from ultrasonic holography are essential. In the past, we presented the spec-radiation method as a fast and accurate method for such tasks. The spec-radiation method calculates the sound field utilizing data from a measurement plane at another parallel or tilted plane, especially the sound field at the surface of a panel. This can be used to detect flaws. There is a limitation of the current method: using the data on the panel surface limits the accuracy of the detected flaws. A big step forward could be expected if the sound field in the material were known. As a first step, we developed the spec-radiation method forward to consider multiple material layers. For now, we made the major assumption that all layers have fluid-like properties. Hence, transversal waves were neglected. This extension of the spec-radiation method was validated utilizing an experiment. We present that flaws in the panel material can be detected with higher accuracy at a similar speed compared to our former approach.
Observations of Anomalous Microwave Emission from HII regions
Creators: name: Dickinson, Clive
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this brief review, I give a summary of the observations of Anomalous Microwave Emission (AME) from HII regions. AME has been detected in, or in the vicinity of, HII regions. Given the difficulties in measuring accurate SEDs over a wide range of frequencies and in complex environments, many of these detections require more data to confirm them as emitting significant AME. The contribution from optically thick free-free emission from UCHII regions may be also be significant in some cases. The AME emissivity, defined as the ratio of the AME brightness to the 100 micron brightness, is comparable to the value observed in high-latitude diffuse cirrus in some regions, but is significantly lower in others. However, this value is dependent on the dust temperature. More data, both at high frequencies (>5 GHz) and high resolution (~1 arcmin or better) is required to disentangle the emission processes in such complex regions.
description: Published in Advances in Astronomy. Final manuscript can be downloaded from http://www.hindawi.com/journals/aa/2013/162478/
Direct Imaging Search for Extrasolar Planets in the Pleiades
Creators: name: Yamamoto, Kodai
name: Matsuo, Taro
name: Shibai, Hiroshi
name: Itoh, Yoichi
name: Konishi, Mihoko
name: Sudo, Jun
name: Tanii, Ryoko
name: Fukagawa, Misato
name: Sumi, Takahiro
name: Kudo, Tomoyuki
name: Hashimoto, Jun
name: Kusakabe, Nobuhiko
name: Abe, Lyu
name: Brandner, Wolfgang
name: Brandt, Timothy D.
name: Carson, Joseph
name: Currie, Thayne
name: Egner, Sebastian E.
name: Feldt, Markus
name: Goto, Miwa
name: Grady, Carol
name: Guyon, Olivier
name: Hayano, Yutaka
name: Hayashi, Masahiko
name: Hayashi, Saeko
name: Henning, Thomas
name: Hodapp, Klaus
name: Ishii, Miki
name: Iye, Masanori
name: Janson, Markus
name: Kandori, Ryo
name: Knapp, Gillian R.
name: Kuzuhara, Masayuki
name: Kwon, Jungmi
name: McElwain, Mike
name: Miyama, Shoken
name: Morino, Jun-Ichi
name: Moro-Martin, Amaya
name: Nishikawa, June
name: Nishimura, Tetsuo
name: Pyo, Tae-Soo
name: Serabyn, Eugene
name: Suto, Hiroshi
name: Suzuki, Ryuji
name: Takami, Michihiro
name: Takato, Naruhisa
name: Terada, Hiroshi
name: Thalmann, Christian
name: Tomono, Daigo
name: Turner, Edwin L.
name: Wisniewski, John
name: Watanabe, Makoto
name: Yamada, Toru
name: Takami, Hideki
name: Usuda, Tomonori
name: Tamura, Motohide
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We carried out an imaging survey for extrasolar planets around stars in the Pleiades (125 Myr, 135 pc) in the $H$ and $K_{S}$ bands using HiCIAO combined with the adaptive optics, AO188, on the Subaru telescope. We found 13 companion candidates fainter than 14.5 mag in the $H$ band around 9 stars. Five of these 13 were confirmed to be background stars by measurement of their proper motion. One was not found in the second epoch observation, and thus was not a background or companion object. One had multi-epoch image, but the precision of its proper motion was not sufficient to conclude whether it was background object. Four other candidates are waiting for second epoch observations to determine their proper motion. Finally, the remaining 2 were confirmed to be 60 $M_{J}$ brown dwarf companions orbiting around HD 23514 (G0) and HII 1348 (K5) respectively, as had been reported in previous studies. In our observations, the average detection limit for a point source was 20.3 mag in the $H$ band beyond 1''.5 from the central star. On the basis of this detection limit, we calculated the detection efficiency to be 90% for a planet with 6 to 12 Jovian masses and a semi-major axis of 50--1000 AU. For this we extrapolated the distribution of planet mass and semi-major axis derived from RV observations and adopted the planet evolution model of Baraffe et al. (2003). As there was no detection of a planet, we estimated the frequency of such planets to be less than 17.9% ($2σ$) around one star of the Pleiades cluster.
description: 30 pages, 5 figures, accepted for publication in PASJ
Salix caprea
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: S. caprea X grandifolia-2: Ob Lens (P., det. R. Görz). - 4: Aletschreservat (Lüdi).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Tailoring the diameter of decorated CN nanotubes by temperature variations using HF-CVD
Creators: name: Kurt, Ralph
name: Klinke, Christian
name: Bonard, Jean-Marc
name: Kern, Klaus
name: Karimi, Ayatollah
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Patterned films of decorated nitrogenated carbon (C-N) nanotubes were catalytically synthesised by hot filament chemical vapour deposition (HF-CVD) in a nitrogen-methane-ammonia environment. The systematic study of a transition between different kinds of C-N nanostructures as a function of the local substrate temperature ranging from 700 up to 820C is presented. The morphology, the diameter as well as the properties of the generated tubular structures showed strong dependence on this parameter. By means of electron microscopy a new type of decoration covering all tubular structures was observed. Buckled lattice fringes revealed the disordered graphitic-like character of the hollow C-N nanotubes. Raman spectroscopy confirmed a transition in the microscopic order as a function of temperature. Furthermore field emission in vacuum was studied and showed a spectacular correlation to the deposition temperature and therefore the diameter of the C-N tubes. For arrays of tubes thinner than 50 nm an onset field below 4 V/um was observed.
description: 10 pages, 7 figures
The Diurnal Temperature Range for Europe - a Search for Cosmic Ray Forbush Decrease manifestations and the DTR periodicities
Creators: name: Erlykin, Anatoly D.
name: Wolfendale, Arnold W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Following on previous work by others, which gave evidence for few-day changes in the European Diurnal Temperature Range (DTR) apparently correlated with Cosmic Ray Forbush Decreases, we have made an independent study. We find no positive evidence. An analysis has also been made of the Fourier components of the time series of the DTR value (taken as deviations from a +/-10 day running mean). Evidence for a number of interesting periods is found, including one at about 27 days, albeit with a variability with time. The same period of solar irradiance (particularly in the UV) is favoured as the explanation.
description: 10 pages, 4 figures, accepted by 'ISRN Atmospheric Sciences', volume 2013, ID 982539
The IRAM-30m line survey of the Horsehead PDR: III. High abundance of complex (iso-)nitrile molecules in UV-illuminated gas
Creators: name: Gratier, P.
name: Pety, J.
name: Guzmán, V.
name: Gerin, M.
name: Goicoechea, J. R.
name: Roueff, E.
name: Faure, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Complex (iso-)nitrile molecules, such as CH3CN and HC3N, are relatively easily detected in our Galaxy and in other galaxies. We constrain their chemistry through observations of two positions in the Horsehead edge: the photo-dissociation region (PDR) and the dense, cold, and UV-shielded core just behind it. We systematically searched for lines of CH3CN, HC3N, C3N, and some of their isomers in our sensitive unbiased line survey at 3, 2, and 1mm. We derived column densities and abundances through Bayesian analysis using a large velocity gradient radiative transfer model. We report the first clear detection of CH3NC at millimeter wavelength. We detected 17 lines of CH3CN at the PDR and 6 at the dense core position, and we resolved its hyperfine structure for 3 lines. We detected 4 lines of HC3N, and C3N is clearly detected at the PDR position. We computed new electron collisional rate coefficients for CH3CN, and we found that including electron excitation reduces the derived column density by 40% at the PDR position. While CH3CN is 30 times more abundant in the PDR than in the dense core, HC3N has similar abundance at both positions. The isomeric ratio CH3NC/CH3CN is 0.15+-0.02. In the case of CH3CN, pure gas phase chemistry cannot reproduce the amount of CH3CN observed in the UV-illuminated gas. We propose that CH3CN gas phase abundance is enhanced when ice mantles of grains are destroyed through photo-desorption or thermal-evaporation in PDRs, and through sputtering in shocks. (abridged)
description: Accepted for publication in Astronomy & Astrophysics
The spectral variability in radio-loud quasars
Creators: name: Gu, Minfeng
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The spectral variability of a sample of 44 flat-spectrum radio quasars (FSRQs) and 18 steep-spectrum radio quasars (SSRQs) in the SDSS stripe 82 region is investigated. Twenty-five of 44 FSRQs show a bluer-when-brighter trend (BWB), while only one FSRQ shows a redder-when-brighter trend, which is in contrast to our previous results. Eight of 18 SSRQs display a BWB. We found an anti-correlation between the Eddington ratio and the variability amplitude in r band for SSRQs, which is similar to that in radio-quiet AGNs. This implies that the thermal emission from the accretion disk may be responsible for the variability in SSRQs. The spectral variability from the SDSS multi-epoch spectroscopy also shows BWB for several SSRQs, consistent with that from photometry.
description: 5 pages, 3 figures, accepted to JApA, conference proceeding paper for Variability of Blazars - From Jansky to Fermi (VBJF), Dec. 13-16, 2012, Guangzhou, China