cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Transition-metal distribution in kagome antiferromagnet CoCu3(OH)6Cl2 revealed by resonant x-ray diffraction
Creators: name: Li, Yuesheng
name: Fu, Jianlong
name: Wu, Zhonghua
name: Zhang, Qingming
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The distribution of chemically similar transition-metal ions is a fundamental issue in the study of herbertsmithite-type kagome antiferromagnets. Using synchrotron radiation, we have performed resonant powder x-ray diffractions on newly synthesized CoCu3(OH)6Cl2, which provide an exact distribution of transition-metal ions in the frustrated antiferromagnet. Both magnetic susceptibility and specific heat measurements are quantitatively consistent with the occupation fractions determined by resonant x-ray diffraction. The distribution of transition-metal ions and residual magnetic entropy suggest a novel low temperature (T < 4 K) magnetism, where the interlayer triangular spins undergo a spin-glass freezing while the kagome spins still keep highly frustrated.
description: 18 pages, 4 figures and 2 tables
Study of molecular matter wave interferometers in Ramsey and Ramsey-Bordé configuration
Creators: name: Liu, Sha
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Ramsey interferometer
subject: Ramsey-Bordé interferometer
subject: AC-Stark effect
subject: cold collision between atoms and molecules
subject: Dynamischer Starkeffekt
subject: kalte Stöße zwischen Atomen und Molekülen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Suitability of test methods to characterize the durability of timber products in various exposure situations under particular consideration of their moisture performance
Creators: name: Meyer-Veltrup, Linda
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Wood durability
subject: testing methodology
subject: above ground exposure
subject: Dauerhaftigkeit
subject: Testmethodik
subject: Gebrauchsklasse 3
subject: Dewey Decimal Classification::600 | Technik::690 | Hausbau, Bauhandwerk

description: [no abstract]
Structure, chemical composition and optical property relationship of alkali-metal tungsten oxides and niobium tungsten oxides
Creators: name: Debnath, Tapas
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Alkali metal tungsten bronzes
subject: optical properties
subject: polaron
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Success factors and performance outcomes of M & As : new perspectives and empirical evidence
Creators: name: Schwerdtfeger, Manuel
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Mergers & acquisitions
subject: corporate governance
subject: integration process
subject: Integrationsprozess
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
Anecdota zur Geschichte der Abtei S. Martin bei Trier
Creators: name: Kraus, Franz Xaver
Publisher: name: Bonner Jahrbücher
Year: 2016

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 44/45 (1868): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Brambach Wilhelm, Corpus Inscriptionum Rhenanarum, 1867
Creators: name: Becker, Jakob
Publisher: name: Bonner Jahrbücher
Year: 2016

description: Rezension zu: Corpus Inscriptionum Rhenanarum consilio et auctoritate societatis Antiquariorum Rhenanae edidit Guilelmus Brambach. Praefatus est Fridericus Ritschelius MDCCCLXVII. Elberfeldae in aedibus Rudolphi Ludovici Friderichs XXVI u. 390 S. 4.
description: Bonner Jahrbücher, Bd. 44/45 (1868): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Structure-function relationships of bacterial sialate O-acetyltransferases
Creators: name: Bergfeld, Anne Katrin
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Polysialiac acid
subject: O-acetyltransferases
subject: bacterial capsular polysaccharides
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Models of Social Groups in Blogosphere Based on Information about Comment Addressees and Sentiments
Creators: name: Gliwa, Bogdan
name: Koźlak, Jarosław
name: Zygmunt, Anna
name: Cetnarowicz, Krzysztof
Publisher: name: arXiv
Year: 2013
Subjects: subject: Social and Information Networks (cs.SI)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: This work concerns the analysis of number, sizes and other characteristics of groups identified in the blogosphere using a set of models identifying social relations. These models differ regarding identification of social relations, influenced by methods of classifying the addressee of the comments (they are either the post author or the author of a comment on which this comment is directly addressing) and by a sentiment calculated for comments considering the statistics of words present and connotation. The state of a selected blog portal was analyzed in sequential, partly overlapping time intervals. Groups in each interval were identified using a version of the CPM algorithm, on the basis of them, stable groups, existing for at least a minimal assumed duration of time, were identified.
description: Gliwa B., Ko\'zlak J., Zygmunt A., Models of Social Groups in Blogosphere Based on Information about Comment Addressees and Sentiments, in the K. Aberer et al. (Eds.): SocInfo 2012, LNCS 7710, pp. 475-488, Best Paper Award
A Multilingual Semantic Wiki Based on Attempto Controlled English and Grammatical Framework
Creators: name: Kaljurand, Kaarel
name: Kuhn, Tobias
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computation and Language (cs.CL)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: We describe a semantic wiki system with an underlying controlled natural language grammar implemented in Grammatical Framework (GF). The grammar restricts the wiki content to a well-defined subset of Attempto Controlled English (ACE), and facilitates a precise bidirectional automatic translation between ACE and language fragments of a number of other natural languages, making the wiki content accessible multilingually. Additionally, our approach allows for automatic translation into the Web Ontology Language (OWL), which enables automatic reasoning over the wiki content. The developed wiki environment thus allows users to build, query and view OWL knowledge bases via a user-friendly multilingual natural language interface. As a further feature, the underlying multilingual grammar is integrated into the wiki and can be collaboratively edited to extend the vocabulary of the wiki or even customize its sentence structures. This work demonstrates the combination of the existing technologies of Attempto Controlled English and Grammatical Framework, and is implemented as an extension of the existing semantic wiki engine AceWiki.
description: To appear in the Proceedings of the 10th Extended Semantic Web Conference (ESWC 2013)
Magnetised Neutron Star Crusts and Torsional Shear Modes of Magnetars
Creators: name: Nandi, Rana
name: Bandyopadhyay, Debades
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss outer and inner crusts of neutron stars in strong magnetic fields. Here, we demonstrate the effect of Landau quantization of electrons on the ground state properties of matter in outer and inner crusts in magnetars. This effect leads to the enhancement of the electron number density in strong magnetic fields with respect to the zero field case. For the outer crust, we adopt the magnetic Baym-Pethick-Sutherland model and obtain the sequence of nuclei and equation of state (EoS). The properties of nuclei in the inner crust in the presence of strong magnetic fields are investigated using the Thomas-Fermi model. The coexistence of two phases of nuclear matter - liquid and gas, is assumed in this case. The proton number density in the Wigner-Seitz cell is affected in strong magnetic fields through the charge neutrality. We perform this calculation using the Skyrme nucleon-nucleon interaction with different parameterisations. We find nuclei with larger mass and atomic numbers in the inner crust in the presence of strong magnetic fields than those of the zero field case for all those parameter sets. Further we investigate torsional shear mode frequencies using the results of magnetised neutron star crusts and compare those with observations.
description: presented in nucleus-nucleus2012 conference held at San Antonio, Texas, USA, 27 May - 1 June, 2012 and to be published in Journal of Physics Conference Series
2D electron momentum distributions for transfer ionization in fast proton Helium collisions
Creators: name: Schoeffler, M. S.
name: Chuluunbaatar, O.
name: Houamer, S.
name: Galstyan, A. G.
name: Titze, J. N.
name: Schmidt, L. Ph. H.
name: Jahnke, T.
name: Schmidt-Boecking, H.
name: Doerner, R.
name: Popov, Yu. V.
name: Gusev, A. A.
name: Cappello, C. Dal
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The momentum distribution of the electron in the reaction p+He $\rightarrow$ H + He$^{2+}$ + $e$ is measured for projectile energies $E_p$=300 and 630 keV/u at very small scattering angles of hydrogen. We mainly present two dimensional distributions parallel $(k_{||})$ and perpendicular $(k_{\perp})$ to the projectile beam. Theoretical calculations were carried out within the Plane Wave First Born Approximation (PWFBA), which includes both electron emission mechanisms, shake-off and sequential capture and ionization. It is shown that electron correlations in the target wave function play the most important role in the explanation of experimentally observed backward emission. Second order effects have to be involved to correctly describe the forward emission of the electron.
description: 14 pages, 4 figures
Computation of sparse low degree interpolating polynomials and their application to derivative-free optimization
Creators: name: Bandeira, Afonso S.
name: Scheinberg, Katya
name: Vicente, Luis Nunes
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: Interpolation-based trust-region methods are an important class of algorithms for Derivative-Free Optimization which rely on locally approximating an objective function by quadratic polynomial interpolation models, frequently built from less points than there are basis components. Often, in practical applications, the contribution of the problem variables to the objective function is such that many pairwise correlations between variables are negligible, implying, in the smooth case, a sparse structure in the Hessian matrix. To be able to exploit Hessian sparsity, existing optimization approaches require the knowledge of the sparsity structure. The goal of this paper is to develop and analyze a method where the sparse models are constructed automatically. The sparse recovery theory developed recently in the field of compressed sensing characterizes conditions under which a sparse vector can be accurately recovered from few random measurements. Such a recovery is achieved by minimizing the l1-norm of a vector subject to the measurements constraints. We suggest an approach for building sparse quadratic polynomial interpolation models by minimizing the l1-norm of the entries of the model Hessian subject to the interpolation conditions. We show that this procedure recovers accurate models when the function Hessian is sparse, using relatively few randomly selected sample points. Motivated by this result, we developed a practical interpolation-based trust-region method using deterministic sample sets and minimum l1-norm quadratic models. Our computational results show that the new approach exhibits a promising numerical performance both in the general case and in the sparse one.
Studies on the characterization and regulation of two major nuclear pore complex proteins Nup98 and Nup96
Creators: name: Enninga, Jost
Publisher: name: Hannover : Universität
Year: 2004
Subjects: subject: Nuclear pore complex
subject: nucleoporin
subject: gene regulation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Verzeichniss der Mitglieder
Creators: name: Redaktion, Die
Publisher: name: Bonner Jahrbücher
Year: 2016

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 44/45 (1868): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Diadem von Bronze, aus der Merlo’schen Sammlung zu Cöln
Creators: name: Lindenschmit, Ludwig
Publisher: name: Bonner Jahrbücher
Year: 2016

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 46 (1869): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
title: Auditory English Lexicon Project
Creators: name: Goh, Winston
name: Yap, Melvin
name: Chee, Qian Wen
Publisher: name: Department of Psychology, National University of Singapore
Year: 2019

description: The AELP is a multi-talker, multi-region psycholinguistic database of 10,170 spoken words and an identical number of nonwords. Six tokens of each stimulus were recorded as 44.1 kHz, 16-bit, mono WAV files by native speakers of American, British, and Singapore English, with one from each gender. Identification norms, as determined by the average intelligibility scores and confidence ratings from between 15 and 20 responses per token, were obtained from 561 participants. Auditory lexical decision accuracies and latencies, with between 25 and 36 responses per token, were obtained from 438 participants. The database also includes a variety of lexico-semantic variables and structural indices for the words and nonwords, as well as participants’ individual difference measures such as age, gender, language background and proficiency. Taken together, there are a total of 122,040 sound files and over 4 million data points in the AELP.

This project was supported by Singapore Ministry of Education Academic Research Fund Tier-2 Grant MOE2016-T2-2-079, and the National University of Singapore Humanities and Social Sciences Seed Fund R-581-000-164-646.
Veronica prostrata L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. prostrata L. Cat. 271. Obere Höhengrenze festzustellen; höchste Stellen vermutlich ob Iserables (vgl. unten). l: Les Räpes (M'artigny-Combe) (Closuit). - 3: Les Valettes-Chemin-Col des Planches (Guyot, Closuit); Orsieres (Melly); Lavintzie im Val de Bagnes (J.); Econe (J.); Mayens d'Iserables (Besse).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
First 2D-ACAR Measurements on Cu with the new Spectrometer at TUM
Creators: name: Weber, Josef Andreas
name: Boni, Peter
name: Ceeh, Hubert
name: Leitner, Michael
name: Hugenschmidt, Christoph
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The two-dimensional measurement of the angular correlation of the positron annihilation radiation (2D-ACAR) is a powerful tool to investigate the electronic structure of materials. Here we report on the first results obtained with the new 2D-ACAR spectrometer at the Technische Universität München (TUM). To get experience in processing and interpreting 2D-ACAR data, first measurements were made on copper. The obtained data are treated with standard procedures and compared to theoretical calculations. It is shown that the measurements are in good agreement with the calculations and that the Fermi surface can be entirely reconstructed using three projections only.
Computations in Quantum Tensor Networks
Creators: name: Huckle, T.
name: Waldherr, K.
name: Schulte-Herbrueggen, T.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The computation of the ground state (i.e. the eigenvector related to the smallest eigenvalue) is an important task in the simulation of quantum many-body systems. As the dimension of the underlying vector space grows exponentially in the number of particles, one has to consider appropriate subsets promising both convenient approximation properties and efficient computations. The variational ansatz for this numerical approach leads to the minimization of the Rayleigh quotient. The Alternating Least Squares technique is then applied to break down the eigenvector computation to problems of appropriate size, which can be solved by classical methods. Efficient computations require fast computation of the matrix-vector product and of the inner product of two decomposed vectors. To this end, both appropriate representations of vectors and efficient contraction schemes are needed. Here approaches from many-body quantum physics for one-dimensional and two-dimensional systems (Matrix Product States and Projected Entangled Pair States) are treated mathematically in terms of tensors. We give the definition of these concepts, bring some results concerning uniqueness and numerical stability and show how computations can be executed efficiently within these concepts. Based on this overview we present some modifications and generalizations of these concepts and show that they still allow efficient computations such as applicable contraction schemes. In this context we consider the minimization of the Rayleigh quotient in terms of the {\sc parafac} (CP) formalism, where we also allow different tensor partitions. This approach makes use of efficient contraction schemes for the calculation of inner products in a way that can easily be extended to the mps format but also to higher dimensional problems.
description: Presented in part at the 26th GAMM Seminar on Tensor Approximations at the Max-Planck-Institute for Mathematics in the Sciences in Leipzig, February 2010
Anatomisches Modell von Louis Auzoux (1847)
Creators: name: Waszk, Benny
Publisher: name: Universität Marburg, Institut für Geschichte der Pharmazie und Medizin
Year: 2022
Subjects: Geschichte der Medizin
anatomisches Modell, Louis Auzoux, Anatomiegeschichte, 19. Jahrhundert

description: Zerlegbares Modell des menschlichen Körpers, hergestellt aus Pappmaché, zum anatomischen Unterricht für Medizinstudenten Mitte des 19. Jahrhunderts, als die Verfügbarkeit von Leichen für den Anatomieunterricht begrenzt war.
description: https://www.uni-marburg.de/de/fb20/bereiche/methoden-gesundheit/museum-anatomicum
Studies on the solid state chemistry of perovskite-type oxides for oxygen separating membranes
Creators: name: Arnold, Mirko
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Perovskite
subject: electron microscopy
subject: membrane
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Neuestes aus Ladenburg-Lopodunum
Creators: name: Fickler, Karl Alois
Publisher: name: Bonner Jahrbücher
Year: 2016

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 46 (1869): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Sub specie evolutionis : eine Studie zur evolutionären Ernährungswissenschaft
Creators: name: Ströhle, Alexander
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Evolutionsmedizin
subject: Jäger und Sammler
subject: Adaptationismus
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Fermionic shock waves - dissipative or dispersive?
Creators: name: Lowman, Nicholas K.
name: Hoefer, Mark A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The collision of two clouds of Fermi gas at unitarity (UFG) has been recently observed to lead to shock waves whose regularization mechanism, dissipative or dispersive, is being debated. While classical, dissipative shocks, as in gas dynamics, develop a steep, localized shock front that translates at a well-defined speed, dispersively regularized shocks are distinguished by an expanding region of short wavelength oscillations with two speeds, those of the leading and trailing edges. For typical UFG experimental conditions, the theoretical oscillation length scale is smaller than the resolution of present imaging systems so it is unclear how to determine the shock type from its structure alone. Two experimental methods to determine the appropriate regularization mechanism are proposed: measurement of the shock speed and observation of a one-dimensional collision experiment with sufficiently tight radial confinement.
description: 7 pages, 3 figures
Studies on host plant resistance to cassava bacterial blight in combination with cultural control measures in ecozones of West Africa
Creators: name: Zinsou, Amégnikin Valerien
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Cassava
subject: Xanthomonas campestris pv. manihotis
subject: integrated control
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
GRB 080407: an ultra-long burst discovered by the IPN
Creators: name: Pal'shin, V.
name: Hurley, K.
name: Goldsten, J.
name: Mitrofanov, I. G.
name: Boynton, W.
name: von Kienlin, A.
name: Cummings, J.
name: Feroci, M.
name: Aptekar, R.
name: Frederiks, D.
name: Golenetskii, S.
name: Mazets, E.
name: Svinkin, D.
name: Golovin, D.
name: Litvak, M. L.
name: Sanin, A. B.
name: Fellows, C.
name: Harshman, K.
name: Starr, R.
name: Rau, A.
name: Savchenko, V.
name: Zhang, X.
name: Barthelmy, S.
name: Gehrels, N.
name: Krimm, H.
name: Palmer, D.
name: Del Monte, E.
name: Marisaldi, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present observations of the extremely long GRB 080704 obtained with the instruments of the Interplanetary Network (IPN). The observations reveal two distinct emission episodes, separated by a ~1500 s long period of quiescence. The total burst duration is about 2100 s. We compare the temporal and spectral characteristics of this burst with those obtained for other ultra-long GRBs and discuss these characteristics in the context of different models.
description: 5 pages, 2 figures, 3 tables. Proceedings of the Gamma-Ray Bursts 2012 Conference (GRB 2012) held in Munich, Germany, May 7-11, 2012. Published online at http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=152
Studies on the ATP-hydrolysis cycle of myosin II at the ensemble and single molecule level using total internal reflection fluorescence microscopy
Creators: name: Amrute-Nayak, Mamta
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: TIRF microscopy
subject: in vitro motility assay
subject: dwell time assay
subject: Myosin II
subject: actin
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Ole Romer's method still on the stage. The study of two bound eclipsing binaries in quintuple system V994 Her
Creators: name: Zasche, P.
name: Uhlar, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: More than three hundred years ago, Ole Romer measured the speed of light only by observing the periodic shifting of the observed eclipse arrival times of Jupiter's moons arising from the varying Earth-Jupiter distance. The same method of measuring the periodic modulation of delays is still used in astrophysics. The ideal laboratories for this effect are eclipsing binaries. The unique system V994 Her consists of two eclipsing binaries orbiting each other. However, until now it was not certain whether these are gravitationally bound and what their orbital period is. We show that the system is in fact quintuple and the two eclipsing binaries are orbiting each other with period about 6.3 years. This analysis was made only from studying the periodic modulation of the two periods, when during the periastron passage one binary has an apparently shorter period, while the other one longer, exactly as required by a theory. Additionally, it was found that both inner eclipsing pairs orbit with slightly eccentric orbits undergoing a slow apsidal motions with a period of the order of centuries.
description: 5 pages, 2 tables, 2 figures, published in 2013MNRAS.429.3472Z
Studies on the antagonistic effect of rhizobacteria against soilborne Phytophthora species on strawberry
Creators: name: Anandhakumar, Jayamani
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Biological control
subject: Phytophthora fragariae var. fragariae
subject: Phytophthora cactorum
subject: rhizobacteria
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Ein Inschriftstein der dritten aquitanischen Cohorte
Creators: name: Fickler, Karl Alois
Publisher: name: Bonner Jahrbücher
Year: 2016

description: [nicht vorhanden / not available]
description: Bonner Jahrbücher, Bd. 46 (1869): Jahrbücher des Vereins von Alterthumsfreunden im Rheinlande
Optimized hydrogen sensing properties of nanocomposite NiO:Au thin films grown by dual Pulsed Laser Deposition
Creators: name: Fasaki, I.
name: Kandyla, M.
name: Tsoutsouva, M. G.
name: Kompitsas, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanocomposite NiO:Au thin films, formed by gold nanoparticles embedded in a nickel oxide matrix, have been grown by reactive pulsed laser deposition (R-PLD). Two actively synchronized nanosecond laser sources, a KrF excimer laser (248 nm) and a Nd:YAG laser (355 nm), were used for the simultaneous ablation of nickel and gold targets in oxygen ambient. The morphology, composition, and optical properties of the obtained nanocomposites were investigated and were found to correlate with the concentration of Au nanoparticles. Further, the NiO:Au nanocomposites have been tested as hydrogen sensors. Embedding Au nanoparticles into the NiO film matrix reduced the sensors operating temperature and improved their performance by orders of magnitude.
Promoting Game Accessibility: Experiencing an Induction on Inclusive Design Practice at the Global Games Jam
Creators: name: Scott, Michael James
name: Ghinea, Gheorghita
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: K.3.2

description: The Global Games Jam (GGJ) attracts many people who are passionate about games development, coming from a range of educational backgrounds. Therefore, the event can be experienced by novices and student developers as an opportunity for learning. This provides an opening to promote themes and ideas that could help form future thinking about games design, emerging as a form of induction on key design issues for new practitioners. Such an approach aims to raise awareness about issues which learners could help develop and take with them into industry. However, the experience itself affords a deep experiential rhetoric and dialogue with experts that could be an effective pedagogical tool for issues seldom addressed deeply in formal educational settings. This paper describes an account by one such individual, being introduced to game accessibility through participation in the GGJ. As such, it is not intended as a rigorous empirical analysis, but rather a perspective on one way a game jam can be experienced, inviting further research on the topic.
description: Presented at the Conference on the Foundations of Digital Games (Inaugural Workshop on the Global Games Jam), May 14-17, 2013, Chania, Greece
Sulfide differentiation in slow-spreading ridge magmas
Creators: name: Ciazela, Jakub
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2018
Subjects: subject: Sulfide
subject: chakophile Metalle
subject: langsam spreizende Rücken
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Slow-spread oceanic crust is thinner and more heterogeneous than fast-spread oceanic crust. These features of the slow-spread oceanic crust affect how sulfides differentiate during magmatic processes and how metals are transported between the mantle and the ocean floor. In order to better understand sulfide differentiation in slow-spreading ridges we investigated igneous rocks from oceanic core complexes (OCC). There, not only volcanic but also plutonic rocks are exposed on the ocean floor. We selected two of the most extensively sampled OCCs to compare between settings with relatively high (Atlantis Bank OCC located at 57°E along the Southwest Indian Ridge) and relatively low (Kane Megamullion OCC located at 23°N along the Mid-Atlantic Ridge) magma supply. Due to high magma supply in Atlantis Bank, large gabbroic bodies can develop and sulfides differentiate mostly through fractional crystallization. Sulfides fractionate early and thus tend to accumulate at the lower part of gabbroic bodies. The lower parts of gabbroic bodies are by ~50% enriched in Cu and by ~100% enriched in S with respect to the upper parts. In addition, gabbro bodies located deeper in the crust are enriched in chalcophile elements with respect to shallower gabbro bodies. Both the facts are consistent with MORBs having sulfur concentrations above sulfide saturation during their ascent through the slow-spread lower crust with high magma supply. In contrast where magma supply is low as is the case for Kane Megamullion, sulfides typically differentiate through melt-mantle reaction. This process may be global, but it becomes increasingly significant at ridge segments with low magma supply and thin crust, where the melt-mantle reaction can proceed to very shallow depths. Melt-mantle reaction leads to high sulfide enrichment at the contacts of gabbro and peridotite. The crust-mantle transition zone exposed in the Kane Megamullion OCC is highly enriched in chalcophile elements. Most seafloor massive sulfides, especially with the highest Cu-grades, occur along slow-spread oceanic lithosphere with relatively low magma supply. The peculiar distribution of the seafloor massive sulfide seems to reflect the style of magmatic differentiation determined by magma supply.
Goldie rank of primitive quotients via lattice point enumeration
Creators: name: Meinel, Joanna
name: Stroppel, Catharina
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 17B10, 16S32, 52B20

description: Let k be an algebraically closed field of characteristic 0. Musson and vandenBergh classified primitive ideals for rings of torus invariant differential operators. This classification applies in particular to subquotients of localized extended Weyl algebras where it can be made explicit in terms of convex geometry. We recall these result and then turn to the corresponding primitive quotients and study their Goldie ranks. We prove that the primitive quotients fall into finitely many families whose Goldie ranks are given by a common quasi-polynomial and then realize these quasi-polynomials as Ehrhart quasi-polynomials arising from convex geometry.
Surface interactions and kinetics of TiO2 photocatalytic oxidation of organic pollutants in aqueous solution
Creators: name: Atitar, Mohamed Faycal
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Attenuated total reflection - Fourier transformed infrared (ATR-FTIR)
subject: adsorption
subject: crystal phase
subject: imazapyr herbicide
subject: kinetics
subject: Langmuir-Hinshelwood
subject: mesoporous TiO2
subject: photodegradation
subject: surface interactions
subject: Kristallphase
subject: Kinetik
subject: mesoporöses TiO2
subject: Oberflächeninteraktion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Reduction in Packet Delay Through the use of Common Buffer over Distributed Buffer in the Routing Node of NOC Architecture
Creators: name: Mohota, Nilesh A.
name: Badjate, Sanjay L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: Performance evaluation of the routing node in terms of latency is the characteristics of an efficient design of Buffer in input module. It is intended to study and quantify the behavior of the single packet array design in relation to the multiple packet array design. The utilization efficiency of the packet buffer array improves when a common buffer is used instead of individual buffers in each input port. First Poissons Queuing model was prepared to manifest the differences in packet delays. The queuing model can be classified as (M/M/1), (32/FIFO). Arrival rate has been assumed to be Poisson distributed with a mean arrival rate of 10 x 1000000. The service rate is assumed to be exponentially distributed with a mean service rate of 10.05 x 1000000. It has been observed that latency in Common Buffer improved by 46 percent over its distributed buffer. A Simulink model later simulated on MATLAB to calculate the improvement in packet delay. It has been observed that the delay improved by approximately 40 percent through the use of a common buffer. A verilog RTL for both common and shared buffer has been prepared and later synthesized using Design Compiler of SYNOPSYS. In distributed buffer, arrival of data packet could be delayed by 2 or 4 clock cycles which lead to latency improvement either by 17 percent or 34 percent in a common buffer
description: 8 Pages, 10 Figures, 2 Tables
Veronica bellidioides L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. bellidioides L. Cat. 273 und 429. Bis 3100 m (Heinis 1927) und 3110 m (Braun-Blanquet 1919) am Gornergrat bei Zermatt. (Eine Angabe «3100m», aber ohne Fundort, schon im Cat.) l: Signal de Bostan (Briquet); Salanfe (J.); La Creuse (J.); Emaney (J.); Col de Tanneverge (Briquet); Vieux-Emosson (Exk. Soc. Murith.); ChevalBlanc (Briquet). - 2: Galmalp (J.);Faldumpass (J.). - 3: Verbreitet. - 4: Rappental (B. C. W.). Var. Townsendi Gremli (V. lilacina Townsend) - l: Combe de Golette (Oberson); Col de Balme (J.); Haut d'Alesse (J.). - 2: Grand Coor ob Fully (F.). - 3: Arpette (Melly, F.); Gr. St. Bernhard (Wilczek, Paiche); Saastal: Gletscheralp bei Fee (J.), Ofental (J.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Water Quality in Southwestern Pennsylvania: Knowledge Gaps and Approaches
Creators: name: Bain, Daniel
name: Elliot, Emily
name: Shelef, Eitan
name: Thomas, Brian
name: River, Mark
Publisher: name: University of Pittsburgh
Year: 2019

description: As southwestern Pennsylvania continues to evolve from its industrial past to become a national leader in innovation and sustainability, it has encountered a complex set of water challenges that threaten the economy, ecology, and public health of the region. In this context, over the last year, the Heinz Endowments has funded the Pittsburgh Collaboratory for Water Research, Education, and Outreach at the University of Pittsburgh to hold a series of consensus-building meetings among regional academic scholars, community groups, governmental and non-governmental organizations. These meetings (one each on green infrastructure, water quality, and flooding) aim to identify key regional knowledge gaps and chart a collaborative research agenda to fill these gaps and enhance the region’s ability to strategically and creatively solve water problems. In June 2019, the first of the reports on Green Infrastructure and Stormwater Management was released.

Now, in October 2019, the second report describing the research agenda on regional water quality arising from a January 28, 2019 meeting will be formally released. This report outlines several fundamental knowledge gaps in the region and suggests methods to span these gaps with new collaborative research.
A new proof of a Bismut-Zhang formula for some class of representations
Creators: name: Braverman, Maxim
name: Vertman, Boris
Publisher: name: arXiv
Year: 2013
Subjects: subject: Spectral Theory (math.SP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: Bismut and Zhang computed the ratio of the Ray-Singer and the combinatorial torsions corresponding to non-unitary representations of the fundamental group. In this note we show that for representations which belong to a connected component containing a unitary representation the Bismut-Zhang formula follows rather easily from the Cheeger-Mueller theorem, i.e. from the equality of the two torsions on the set of unitary representations. The proof uses the fact that the refined analytic torsion is a holomorphic function on the space of representations.
Rule or exception? Planetary nebulae around hot subdwarf stars
Creators: name: Aller, A.
name: Miranda, L. F.
name: Ulla, A.
name: Oreiro, R.
name: Manteiga, M.
name: Pérez, E.
name: Rodríguez-López, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this work, we present the first results of an ongoing survey to search for planetary nebulae (PNe) around hot subdwarf stars (sdOs). Deep images and intermediate-resolution long-slit spectra of RWT 152, the only confirmed PN+sdO system in the northern hemisphere, as well as preliminary results for other sdO+PN candidate are presented.
description: Contribution IAUS283 (published in electronic version). 2 pages, 2 Postscript figures
Besides variety, also season and ripening stage have a major influence on fruit pulp aroma of cacao (Theobroma cacao L.)
Creators: name: Hegmann, Elsa
name: Niether, Wiebke
name: Rohsius, Christina
name: Phillips, Wilbert
name: Lieberei, Reinhard
Publisher: name: Journal of Applied Botany and Food Quality
Year: 2020

description: More than 1000 different cacao varieties are described. Only few are considered as fine or flavour cocoas, meaning they have the potential to develop special flavour characteristics after appropriate fermenta-tion and drying. It is assumed that aroma compounds located in the fruit pulp migrate into the seed during fermentation. We studied the fine aroma potential of five cacao varieties selected at CATIE, Costa Rica, by analysing aroma compounds in their fresh fruit pulps using Headspace SPME-GCMS. Pulps of unripe, ripe and overripe fruits harvested in the dry and rainy season, respectively, were compared to the control genotypes EET 62 and SCA-6, both known for high amounts of fine aromas described as e.g. “fruity”, “floral” or “spicy”. All genotypes contained a basic content of the two dominating esters 2-pentanol acetate and 2-heptanol acetate, combined with a mixture of aroma-active compounds with small peak areas that form the variety-specific aroma character. Total aroma diversity and intensity increased during ripening. Aroma profiles were more diverse when fruits ripened during the dry season, whereas aroma intensity was higher in the rainy season. Thus, the fruit and environmental condi-tions prior to harvest can already play a decisive role for the aroma potential of the cacao pulp. Due to their aroma profiles, the varieties from CATIE can be classified as fine or flavour cocoas.
description: Journal of Applied Botany and Food Quality, Vol. 93 (2020): Journal of Applied Botany and Food Quality
Surfactant-modifizierte Epitaxie für Ge/Si-Heterobauelemente
Creators: name: Wietler, Tobias
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Silicon
subject: surfactant-mediated epitaxy
subject: Germanium
subject: Silizium
subject: surfactant-modifizierte Epitaxie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Reinhard Lieberei − Die Gabe, vernetzt zu denken
Creators: name: Schwarz, Petra
Publisher: name: Journal of Applied Botany and Food Quality
Year: 2020

description: Ausstellungen universitärer Museen verkörpern eine wissenschaft-lich-kuratorische Transferleistung, die mehr ist als ein „Übersetzen“ oder „Vereinfachen“ akademischen Wissens. Reinhard Lieberei hat das Loki Schmidt Haus, das Museum für Nutzpflanzen der Univer-sität Hamburg von der Neukonzeption an begleitet und systemisches Denken in den Museumsalltag eingeführt. Er erkannte in den mög-lichen Lesarten von Ausstellungen Ansatzpunkte für Wissenstransfer. Sein Vertrauen darauf, Studierende früh in den wissenschaftlichen Dialog einzubinden und an die eigenständige Entwicklung von Kom-munikationsformaten heranzuführen, hat die Basis und den Impuls für neue Herangehensweisen in der Lehre gegeben.
description: Journal of Applied Botany and Food Quality, Vol. 93 (2020): Journal of Applied Botany and Food Quality
Supressing loss channels in the bulk and at the surface of crystalline silicon solar cells
Creators: name: Zielke, Dimitri
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2016
Subjects: subject: Aluminum oxide
subject: PEDOT:PSS/c-Si heterojunction
subject: multicrystalline silicon
subject: laser texture
subject: Aluminiumoxid
subject: PEDOT:PSS/c-Si-Heteroübergang
subject: multikristallines Silizium
subject: Lasertextur
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Swirl and blade wakes in the interaction between gas turbines and exhaust diffusers investigated by endoscopic particle image velocimetry
Creators: name: Opilat, Victor
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Turbine exhaust diffuser
subject: blade wake
subject: endoscopic particle image velocimetry
subject: Austrittsdiffusor Turbine
subject: Nachlaufdellen
subject: endoskopische Particle Image Velocimetry
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Surface passivation of crystalline silicon solar cells by amorphous silicon films
Creators: name: Plagwitz, Heiko
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2007
Subjects: subject: Silicon
subject: surface passivation
subject: carrier lifetime
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Alfven waves in a partially ionized two-fluid plasma
Creators: name: Soler, R.
name: Carbonell, M.
name: Ballester, J. L.
name: Terradas, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Alfvén waves are a particular class of magnetohydrodynamic waves relevant in many astrophysical and laboratory plasmas. In partially ionized plasmas the dynamics of Alfvén waves is affected by the interaction between ionized and neutral species. Here we study Alfvén waves in a partially ionized plasma from the theoretical point of view using the two-fluid description. We consider that the plasma is composed of an ion-electron fluid and a neutral fluid, which interact by means of particle collisions. To keep our investigation as general as possible we take the neutral-ion collision frequency and the ionization degree as free parameters. First, we perform a normal mode analysis. We find the modification due to neutral-ion collisions of the wave frequencies and study the temporal and spatial attenuation of the waves. In addition, we discuss the presence of cut-off values of the wavelength that constrain the existence of oscillatory standing waves in weakly ionized plasmas. Later, we go beyond the normal mode approach and solve the initial-value problem in order to study the time-dependent evolution of the wave perturbations in the two fluids. An application to Alfvén waves in the low solar atmospheric plasma is performed and the implication of partial ionization for the energy flux is discussed.
description: Accepted for publication in ApJ
Sustainability and capital conservation in corporate and individual finance
Creators: name: Reddemann, Sebastian
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Sustainability
subject: transparency
subject: capital structure of insurance companies
subject: dividend policy
subject: signal theory
subject: risk perception
subject: Nachhaltigkeit
subject: Transparenz
subject: Kapitalstruktur von Versicherungen
subject: Dividendenpolitik
subject: Signaltheorie
subject: Risikowahrnehmung
subject: Dewey Decimal Classification::600 | Technik::650 | Management
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
Veronica fruticulosa L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: V. fruticulosa L. Cat. 274. Bis 2600m. l: Lovenex (J.). -3:Valsorey, bis2600m (Guyot); Lourtier-Mauvoisin (J., Zahn); Col de Torrent (Beauverd).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Synthesis and characterization of aerogels from shape controlled metal and semiconductor nanocrystals
Creators: name: Naskar, Suraj
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Aerogel
subject: nanoplatelet
subject: metal-semiconductor hybrid
subject: Nanoplättchen
subject: Metall-Halbleiter Hybride
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]