cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: The logarithmic residue density of a generalized Laplacian
Creators: name: Mickelsson, Jouko
name: Paycha, Sylvie
Publisher: name: Universität Potsdam
Year: 2019

description: We show that the residue density of the logarithm of a generalized Laplacian on a closed manifold defines an invariant polynomial-valued differential form. We express it in terms of a finite sum of residues of
classical pseudodifferential symbols. In the case of the square of a Dirac operator, these formulas provide a pedestrian proof of the Atiyah–Singer formula for a pure Dirac operator in four dimensions and for a
twisted Dirac operator on a flat space of any dimension. These correspond to special cases of a more general formula by Scott and Zagier. In our approach, which is of perturbative nature, we use either a Campbell–Hausdorff formula derived by Okikiolu or a noncommutative Taylor-type formula.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 649
Container crystals for microencapsulation - manufacturing and application potential
Creators: name: Seidel, Julia
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2017
Subjects: subject: 660

description: Ziel dieser Arbeit war es zu untersuchen, inwieweit Salizylsäurekristalle als Verkapselungsmaterialien in potenziellen (Hautpflege-)Produkten angewendet werden können. Dazu wurde das allgemeine Kristallisationsverhalten (Löslichkeit, metastabiler Bereich, Wachstums- und Auflöseraten) von Salizylsäure für Luft-gesättigte und entgaste Lösungen untersucht. Außerdem wurde die Löslichkeit von Salizylsäure in Ethanol-Wasser-Gemischen bestimmt. Anhand dieser Daten wurde das Hansen-Solubility-Parameter-Modell angewandt, um die Salizylsäurelöslichkeit in verschiedenen Lösungsmittel-Wasser-Gemischen abschätzen zu können. Um die Verwendung der Kristalle als Verkapselungsmaterial abschätzen zu können, wurde das experimentelle Vorgehen darauf ausgerichtet möglichst große Einschlüsse in den Kristallen (ca. 1%) zu erhalten. Abschießend wurden die Kristalle mit Ascorbinsäure befüllt. Das Potenzial für die Verkapselung beträgt <<1%, was zu gering ist um für die Wirkstoffverkapselung genutzt zu werden.
description: The aim of this thesis was to investigate inclusion containing salicylic acid crystals as encapsulation material due to their applicability in potential (skin care) products. In general the crystallization behavior (solubility, metastable zone, growth and dissolution rate) of salicylic acid was investigated for air saturated and degases solutions. Further, the solubility of salicylic acid in ethanol-water-mixtures was determined. Based on experimental data the Hansen Solubility Parameter-model was applied to estimate salicylic acid solubility in different solvent-water-mixtures.To estimate the applicability of salicylic acid crystals as container material the experimental procedure to receive crystals with highest possible inclusion amounts (ca. 1%) was determined. Finally, the crystals could be filled with ascorbic acid. The encapsulation potential is estimated to be <<1% and, thus, it is too low to be applied for agent encapsulation.
Herstellung eines mesoporösen Ni/Al2O3-Katalysatorsystems mit Hilfe einer templatgestützten Sol-Gel-Synthese
Creators: name: Teichmann, Daniel
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Reformieren
subject: Methan
subject: Katalyse
subject: Online-Publikation
subject: Hochschulschrift
subject: 660
subject: 540

description: Die Reaktion des trockenen Reformierens von Methan benötigt sehr hohe Reaktionstemperaturen, um nennenswerte Umsätze zu generieren. Die vorliegende Arbeit beschäftigt sich mit der Herstellung eines für diese Reaktionsbedingungen geeigneten Nickel-Aluminiumoxid-Katalysatorsystems. Unter Verwendung einer Sol-Gel-Synthese wurden die Synthesebedingungen und die Formierungsbedingungen in einem weiten Rahmen variiert. Durch hohe Kalzinierungstemperaturen konnte ein Nickelaluminiumspinell mit starken Metall-Träger-Wechselwirkungen gebildet werden. Zur Reduktion wurde ein spezielles Verfahren entwickelt, welches durch Variation des Wasserstoffpartialdruckes eine deutliche Steigerung der Dispersität gegenüber konventionellen Reduktionsverfahren ermöglichte. In der anschließenden katalytischen Testung zeigten diese Katalysatoren eine stark verringerte Verkokungsneigung, bei guter Langzeitstabilität und hohen Reaktionstemperaturen von bis zu 900°C.
description: The dry reforming of methane requires very high temperatures for considerable conversion rates. This work handles the preparation of a high temperature stable nickel-alumina-catalyst via sol-gel-synthesis. The terms of synthesis and formation have been varied in a broad range. Caused by high calcination temperature it was possible to create a nickel-alumina-spinel with strong metal support interactions. A special reduction procedure has been developed to gain a very high dispersion compared to standard procedures. The catalytic testing at temperatures up to 900°C shows a decrease in coke formation and a very good long-term stability.
A simple derivation of the Lindblad equation
Creators: name: Brasil, Carlos Alexandre
name: Fanchini, Felipe Fernandes
name: Napolitano, Reginaldo de Jesus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a derivation of the Lindblad equation - an important tool for the treatment of non-unitary evolutions - that is accessible to undergraduate students in physics or mathematics with a basic background on quantum mechanics. We consider a specific case, corresponding to a very simple situation, where a primary system interacts with a bath of harmonic oscillators at zero temperature, with an interaction Hamiltonian that resembles the Jaynes-Cummings format. We start with the Born-Markov equation and, tracing out the bath degrees of freedom, we obtain an equation in the Lindblad form. The specific situation is very instructive, for it makes it easy to realize that the Lindblads represent the effect on the main system caused by the interaction with the bath, and that the Markov approximation is a fundamental condition for the emergence of the Lindbladian operator. The formal derivation of the Lindblad equation for a more general case requires the use of quantum dynamical semi-groups and broader considerations regarding the environment and temperature than we have considered in the particular case treated here.
description: 11 pages
title: From cyclic ice streaming to Heinrich-like events
title: the grow-and-surge instability in the Parallel Ice Sheet Model
titleType: Subtitle
Creators: name: Feldmann, Johannes
name: Levermann, Anders
Publisher: name: Universität Potsdam
Year: 2019

description: Here we report on a cyclic, physical ice-discharge instability in the Parallel Ice Sheet Model, simulating the flow of a three-dimensional, inherently buttressed ice-sheet-shelf system which periodically surges on a millennial timescale. The thermomechanically coupled model on 1 km horizontal resolution includes an enthalpy-based formulation of the thermodynamics, a nonlinear stress-balance-based sliding law and a very simple subglacial hydrology. The simulated unforced surging is characterized by rapid ice streaming through a bed trough, resulting in abrupt discharge of ice across the grounding line which is eventually calved into the ocean. We visualize the central feedbacks that dominate the subsequent phases of ice buildup, surge and stabilization which emerge from the interaction between ice dynamics, thermodynamics and the subglacial till layer. Results from the variation of surface mass balance and basal roughness suggest that ice sheets of medium thickness may be more susceptible to surging than relatively thin or thick ones for which the surge feedback loop is damped. We also investigate the influence of different basal sliding laws (ranging from purely plastic to nonlinear to linear) on possible surging. The presented mechanisms underlying our simulations of self-maintained, periodic ice growth and destabilization may play a role in large-scale ice-sheet surging, such as the surging of the Laurentide Ice Sheet, which is associated with Heinrich events, and ice-stream shutdown and reactivation, such as observed in the Siple Coast region of West Antarctica.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 652
In-line/on-line measuring techniques in the solution crystallization processes
Creators: name: Mostafavi, Maryam
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Lösungskristallisation
subject: Inprozesskontrolle
subject: Online-Messung
subject: Gasblase
subject: Online-Publikation
subject: Hochschulschrift
subject: 620
subject: 660

description: Ultraschall-Einzelfrequenz-, 3D-ORM- und FBRM-Methoden sind Beispiele für Process Analytical Technology-Werkzeuge, welche prinzipiell in der Lage sind, auf die Zustände der Suspensionskristallisation einzugehen. In dieser Forschungsarbeit wird die Auswirkung von Gasblasen auf das Ergebnis (gemessene mittlere Sehnenlänge) der 3D-ORM-Methode untersucht. Um den Grund für dieses Phänomen zu ermitteln, wurden einige der im Folgenden beschriebenen Verfahren durchgeführt. Folglich kann bei höherer Kristall-Suspensionsdichte davon ausgegangen werden, dass Gasblasen bei der Messung der festen Phase eine nicht zu vernachlässigende Rolle spielen. Außerdem wird der Einfluss der Partikelform auf das Ergebnis verschiedener Messmethoden einschließlich der Ultraschall-Einzelfrequenz-, FBRM- und 3D-ORM–Methode bewertet. Es werden Vor- und Nachteile dieser Methoden verglichen und diskutiert. In dieser Arbeit wird die Überwachung des solvensvermittelten Phasentransfers durch die Ultraschall-Einzelfrequenz- und die 3D-ORM Methode beruhend auf Fallstudien untersucht. Diese Techniken nicht in allen Fällen, aber immer mindestens eine in Betrieb ist.
description: Ultrasound single frequency, 3D ORM and FBRM techniques are examples of Process Analytical technology tools in principle capable of dealing with the conditions of suspension crystallization and are therefore used in this research. The effect of gas bubbles on the outcome (measured mean chord length) of the 3D ORM technique is investigated in this research. To investigate the reason for this phenomenon some procedures were carried out. The non-neglectable role of gas bubbles on the solid phase measurement could be concluded in higher volume suspension density. Furthermore, the influence of the particle shape on the result of different measuring techniques including ultrasound single frequency, FBRM and 3D ORM techniques is evaluated. Advantages and shortcomings of these techniques are compared and discussed. In this work, monitoring of solvent mediated phase transition by ultrasound single frequency and 3D ORM techniques is evaluated based on some case studies. These techniques do not work in all cases, but always at least one is working.
Using weak values to experimentally determine "negative probabilities" in a two-photon state with Bell correlations
Creators: name: Higgins, B. L.
name: Palsson, M. S.
name: Xiang, G. Y.
name: Wiseman, H. M.
name: Pryde, G. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Bipartite quantum entangled systems can exhibit measurement correlations that violate Bell inequalities, revealing the profoundly counter-intuitive nature of the physical universe. These correlations reflect the impossibility of constructing a joint probability distribution for all values of all the different properties observed in Bell inequality tests. Physically, the impossibility of measuring such a distribution experimentally, as a set of relative frequencies, is due to the quantum back-action of projective measurements. Weakly coupling to a quantum probe, however, produces minimal back-action, and so enables a weak measurement of the projector of one observable, followed by a projective measurement of a non-commuting observable. By this technique it is possible to empirically measure weak-valued probabilities for all of the values of the observables relevant to a Bell test. The marginals of this joint distribution, which we experimentally determine, reproduces all of the observable quantum statistics including a violation of the Bell inequality, which we independently measure. This is possible because our distribution, like the weak values for projectors on which it is built, is not constrained to the interval [0, 1]. It was first pointed out by Feynman that, for explaining singlet-state correlations within "a [local] hidden variable view of nature ... everything works fine if we permit negative probabilities". However, there are infinitely many such theories. Our method, involving "weak-valued probabilities", singles out a unique set of probabilities, and moreover does so empirically.
description: 9 pages, 3 figures
title: Nutrient stoichiometry and land use rather than species richness determine plant functional diversity
Creators: name: Busch, Verena
name: Klaus, Valentin H.
name: Penone, Caterina
name: Schäfer, Deborah
name: Boch, Steffen
name: Prati, Daniel
name: Müller, Jörg
name: Socher, Stephanie A.
name: Niinemets, Ülo
name: Peñuelas, Josep
name: Hölzel, Norbert
name: Fischer, Markus
name: Kleinebecker, Till
Publisher: name: Universität Potsdam
Year: 2019

description: Plant functional traits reflect individual and community ecological strategies. They allow the detection of directional changes in community dynamics and ecosystemic processes, being an additional tool to assess biodiversity than species richness. Analysis of functional patterns in plant communities provides mechanistic insight into biodiversity alterations due to anthropogenic activity. Although studies have considered of either anthropogenic management or nutrient availability on functional traits in temperate grasslands, studies combining effects of both drivers are scarce. Here, we assessed the impacts of management intensity (fertilization, mowing, grazing), nutrient stoichiometry (C, N, P, K), and vegetation composition on community-weighted means (CWMs) and functional diversity (Rao's Q) from seven plant traits in 150 grasslands in three regions in Germany, using data of 6 years. Land use and nutrient stoichiometry accounted for larger proportions of model variance of CWM and Rao's Q than species richness and productivity. Grazing affected all analyzed trait groups; fertilization and mowing only impacted generative traits. Grazing was clearly associated with nutrient retention strategies, that is, investing in durable structures and production of fewer, less variable seed. Phenological variability was increased. Fertilization and mowing decreased seed number/mass variability, indicating competition-related effects. Impacts of nutrient stoichiometry on trait syndromes varied. Nutrient limitation (large N:P, C:N ratios) promoted species with conservative strategies, that is, investment in durable plant structures rather than fast growth, fewer seed, and delayed flowering onset. In contrast to seed mass, leaf-economics variability was reduced under P shortage. Species diversity was positively associated with the variability of generative traits. Synthesis. Here, land use, nutrient availability, species richness, and plant functional strategies have been shown to interact complexly, driving community composition, and vegetation responses to management intensity. We suggest that deeper understanding of underlying mechanisms shaping community assembly and biodiversity will require analyzing all these parameters.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 651
title: Differentiation in native as well as introduced ranges
title: germination reflects mean and variance in cover of  surrounding vegetation
titleType: Subtitle
Creators: name: Heger, Tina
name: Nikles, Gabriele
name: Jacobs, Brooke S.
Publisher: name: Universität Potsdam
Year: 2019

description: Germination, a crucial phase in the life cycle of a plant, can be significantly influenced by competition and facilitation. The aim of this study was to test whether differences in cover of surrounding vegetation can lead to population differentiation in germination behaviour of an annual grassland species, and if so, whether such a differentiation can be found in the native as well as in the introduced range. We used maternal progeny of Erodium cicutarium previously propagated under uniform conditions that had been collected in multiple populations in the native and two introduced ranges, in populations representing extremes in terms of mean and variability of the cover of surrounding vegetation. In the first experiment, we tested the effect of germination temperature and mean cover at the source site on germination, and found interlinked effects of these factors. In seeds from one of the introduced ranges (California), we found indication for a 2-fold dormancy, hindering germination at high temperatures even if physical dormancy was broken and water was available. This behaviour was less strong in high cover populations, indicating cross-generational facilitating effects of dense vegetation. In the second experiment, we tested whether spatial variation in cover of surrounding vegetation has an effect on the proportion of dormant seeds. Contrary to our expectations, we found that across source regions, high variance in cover was associated with higher proportions of seeds germinating directly after storage. In all three regions, germination seemed to match the local environment in terms of climate and vegetation cover. We suggest that this is due to a combined effect of introduction of preadapted genotypes and local evolutionary processes.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 650
Towards a total synthesis of (–)-amphidinolide K : development of new radical cascade methods
Creators: name: Campbell, Natalie E.
Publisher: name: University of British Columbia
Year: 2014

description: (–)-Amphidinolide K, a novel 19-membered macrolide isolated by Kobayashi and coworkers, possesses cytotoxic activity against L1210 and KB cells in vitro. I have utilized our radical relay cyclization methodology to access the tetrahydrofuran ring in high diastereoselectivity from a readily accessible precursor. N-alkoxyphthalimides, when subjected to radical conditions, are able to generate oxygen radicals, which may undergo a 1,5-hydrogen atom transfer, and subsequently cyclize onto a nearby radical acceptor. I also extended this radical methodology towards the synthesis of a number of 5-membered carbo- and heterocycles. The 1,3-dimethyl stereocenters of our target natural product were accessed by utilizing the inherent C₂ symmetry of a simple diol precursor. Several methods to rapidly access a diene fragment of our target have been explored. A tandem ring-closing metathesis/cycloreversion strategy was originally sought, with a number of approaches towards the synthesis of the requisite sulfur-containing precursors. While this strategy was ultimately unsuccessful, it was the model inspiration for a tandem one-electron/pericyclic cascade approach. Commencing with simple alkyl aldehydes, we are now about to effect the synthesis of substituted 1,3-butadienes in a single step with high yields and diastereoselectivities. Details of this work and progress towards the total synthesis of (–)-amphidinolide K will be discussed herein.
Supporting Information-1.docx
Creators: name: Feng, Zhentian
name: Chu, Yang
Publisher: name: figshare
Year: 2021
Subjects: subject: 40312 Structural Geology
subject: FOS: Earth and related environmental sciences

description: The supporting materials provide: (1) detailed information of selected samples deformations in Figure S1; (2) eleven groups of magnetic mineral measurements of representative specimens from the Jiuling batholith in Figure S2;
Tenacity of Alaria alata mesocercariae in homemade German meat products and effects of different in vitro conditions and temperatures on its survival - [kumulative Dissertation]
Creators: name: Gonzáles Fuentes, Hiromi
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2015
Subjects: subject: Fleischverarbeitung
subject: Lebensmittelhygiene
subject: Zoonose
subject: Parasit
subject: Online-Publikation
subject: Hochschulschrift
subject: 610
subject: 660

description: Die aktuellen Funde von Alaria-alata-Mesozerkarien in Wildschweinen und anderen Tieren in Europa haben die Sorge um ein mögliches Gesundheitsrisiko, das von diesem Parasiten ausgeht, verstärkt. Verschiedene Fälle Lebensmittel-assoziierter humaner Alariose in Nordamerika haben gezeigt, dass ein Infektionsrisiko, welches mit dem Verzehr traditioneller, roher geräucherter und/oder gepökelter Produkte aus infiziertem Wildschweinfleisch verbunden ist, nicht vernachlässigt werden kann, da diese häufig verwendet werden. Ein Risiko für den Verbraucher besteht vor allem dann, wenn infiziertes Wildfleisch ungenügend erhitzt oder gekühlt wird. Durcherhitzen und Einfrieren sind effektive Methoden, um den Parasiten im Fleisch zu inaktivieren. Darüber hinaus können alternative Methoden, wie z.B. die Erhitzung mittels Mikrowellen, ein gleichwertiges Verfahren der Inaktivierung darstellen. Ein erhöhtes Risiko einer Infektion des Verbrauchers besteht außerdem, wenn durch ein sich veränderndes Verbraucherverhalten und neue Zubereitungsmethoden des Wildfleisches, eine sichere Inaktivierung von im Fleisch enthaltenen Parasiten nicht mehr gewährleistet ist. Parallel dazu kann der Effekt verschiedener Ethanol-Konzentrationen auf die Vitalität von A.-alata-Mesozerkarien wichtige Anhaltspunkte für die Durchführung eines geeigneten Reinigungs- und Desinfektionsschemas im Haushalt geben.
description: The recent findings of Alaria alata mesocercariae in wild boars and other animals in Europe reinforced the concern about the public health risk posed by this parasite. Cases of food associated human alariosis in North America suggest that a risk associated with the consumption of traditional raw cured productsfrom infected meat cannot be neglected because the commonly preservation techniques may not necessarily kill the mesocercariae. A risk may also exist if the game meat is insufficiently heated or refrigerated. Cooking and freezing are effective methods for the inactivation of parasites in meat. Alternative methods of treatment, such as microwave heating may represent an equally effective tool for the inactivation.Changes in consumer behaviour and new preparation methods for game meat may increase the risk for food-associated parasitic infections. Finally, the effect of different concentrations of ethanol solutions is important for the evaluation on the viability of A. alata mesocercariae during the disinfection of surfaces in laboratories.
An Analysis of the Rapidly Rotating Bp Star HD 133880
Creators: name: Bailey, J. D.
name: Grunhut, J.
name: Shultz, M.
name: Wade, G.
name: Landstreet, J. D.
name: Bohlender, D.
name: Lim, J.
name: Wong, K.
name: Drake, S.
name: Linsky, J.
name: Collaboration, the MiMeS
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: HD 133880 is a rapidly rotating Bp star and host to one of the strongest magnetic fields of any Bp star. A member of the Upper Centaurus Lupus association, it is a star with a well-determined age of 16 Myr. Twelve new spectra obtained from the FEROS, ESPaDOnS, and HARPS instruments, provide sufficient material from which to re-evaluate the magnetic field and obtain a first approximation to the atmospheric abundance distributions of various elements. Using the new magnetic field measurements and optical photometry together with previously published data, we refine the period of HD 133880 to P = 0.877476 \pm 0.000009 days. The magnetic field structure was characterised by a colinear multipole expansion from the observed variations of the longitudinal and surface fields with rotational phase. This simple axisymmetric magnetic field model is based on a predominantly quadrupolar component that roughly describes the field variations. Using spectrum synthesis, we derived mean abundances for O, Mg, Si, Ti, Cr, Fe, Nd and Pr. All elements, except Mg (which has a uniform distribution), are overabundant compared to the Sun and are more abundant in the negative than in the positive magnetic hemisphere. In contrast to most Bp stars the abundance of O in HD 133880 is overabundant compared to the solar abundance ratio. In studying the Halpha and Paschen lines in the optical spectra we could not unambiguously detect information about the magnetosphere of HD 133880. However, radio emission data at both 3 and 6 cm suggests that the magnetospheric plasma is held in rigid rotation with the star by the magnetic field and further supported against collapse by the rapid rotation. Subtle differences in the shapes of the optically thick radio light curves at 3 and 6 cm suggest that the large-scale magnetic field is not fully axisymmetric at large distances from the star.
description: Accepted for publication in MNRAS. 17 pages, 10 figures
The influence of certain additives on the stability of all-trans astaxanthin dissolved in methylene chloride and chloroform
Creators: name: Kreißig, Franziska
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: Astaxanthin
subject: Isomerisierungsreaktion
subject: Additiv
subject: Chloroform
subject: Methylenchlorid
subject: 660

description: Die Stabilisierung von all-trans Astaxanthin (AXT) durch die Verwendung von Additiven wurde untersucht, wenn das Isomer gelöst in chlorierten Lösungsmitteln (rein und wassergesättigt) vorliegt. Mittels experimenteller Versuche, in denen die Isomerisierungsprozesse beschleunigt abliefen, war es möglich den positiven Einfluss auf die Stabilisierung des Isomers durch die Additiv-Anwendung zu demonstrieren. Darüber hinaus war es ebenfalls möglich per HPLC nachzuweisen, dass unter den fest definierten Versuchsbedingungen der Einsatz unterschiedlicher Additive unterschiedliche Resultate liefert. Das beste Resultat bezüglich der Stabilisierung von all-trans AXT in reinem Dichlormethan lieferte der Einsatz von K2CO3. In wassergesättigtem Dichlormethan war der Verlust an all-trans Isomer am geringsten in der Anwesenheit von K2HPO4 in der Lösung. CH3COOK und K2CO3 lieferten jeweils in reinem und wassergesättigtem Chloroform die effektivste Stabilisierung.
description: The stabilization of all-trans astaxanthin (AXT), dissolved in chlorinated solvents (pure and water-saturated), by the application of additives was investigated. By acceleration of isomerization processes it was possible to demonstrate positive impacts on the stability of the molecule, provided by several additives. It was also proven by HPLC that under defined conditions different additives provide different levels of efficiency. The best result in stabilizing all-trans AXT in pure methylene chloride was achieved by application of K2CO3. In water-saturated methylene chloride the smallest loss of all-trans isomer occurred in the presence of K2HPO4. In case of pure and water-saturated chloroform the most effective stabilization was provided by K2CO3 and CH3COOK.
Darboux transformations, finite reduction groups and related Yang-Baxter maps
Creators: name: Konstantinou-Rizos, Sotiris
name: Mikhailov, Alexander
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: In this paper we construct Yang-Baxter (YB) maps using Darboux matrices which are invariant under the action of finite reduction groups. We present 6-dimensional YB maps corresponding to Darboux transformations for the Nonlinear Schrödinger (NLS) equation and the derivative Nonlinear Schrödinger (DNLS) equation. These YB maps can be restricted to $4-$dimensional YB maps on invariant leaves. The former are completely integrable and they also have applications to a recent theory of maps preserving functions with symmetries \cite{Allan-Pavlos}. We give a $6-$ dimensional YB-map corresponding to the Darboux transformation for a deformation of the DNLS equation. We also consider vector generalisations of the YB maps corresponding to the NLS and DNLS equation.
description: 18 pages, revised version. The format of the paper has changed, we added one section
title: España, viaje de ida y vuelta: miradas extranjeras en Entre visillos e Irse de casa de Carmen Martín Gaite
Creators: name: Venzon, Ruben
Publisher: name: Iberoamericana/Vervuert
Year: 2021
Subjects: subject: 860

description: Extranjeros, turistas, migrantes: Estudios sobre identidad y alteridad en las culturas hispánicas contemporáneas, p. 35
Late Palaeozoic red beds elucidate fluvial architectures preserving large woody debris in the seasonal tropics of central Pangaea
Creators: name: Trümper, Steffen
name: Gaitzsch, Birgit
name: Schneider, Jörg W.
name: Ehling, Bodo-Carlo
name: Kleeberg, Reinhard
name: Rößler, Ronny
Publisher: name: FID GEO
Year: 2020

description: Fluvial red beds containing anatomically preserved large woody debris shed new light on seasonally dry biomes of the Pennsylvanian–Permian transition and elucidate the concurrence of river depositional systems and vegetation. As a result, the occurrence, distribution and preservation of petrified large woody debris accumulations are considered crucial to understanding the role of arborescent vegetation in shaping fluvial environments. This study reports sizeable silicified trunks and corresponding fluvial architectures from the uppermost Pennsylvanian (upper Gzhelian) Siebigerode Formation (Kyffhäuser, central Germany). The origin, taphonomy and depositional environment of the fossil woods are elucidated by using a multidisciplinary approach including geological mapping, lithofacies analysis, sediment petrography, wood anatomical studies and microstructure analyses. Results reflect the gradual burial of a gentle basement elevation by sand-bed to gravel-bed braided rivers at the north-western margin of the perimontane Saale Basin. Facies architectures resulted from a complex interplay of syndepositional tectonics, repeated palaeorelief rejuvenation, high-frequency channel avulsion, seasonally dry climate and woody debris–sediment interactions. The alluvial influx and cut-bank erosion recruited trunks from adjacent semi-riparian slope habitats vegetated by up to 40 m tall cordaitaleans and conifers. High discharge in wide braids facilitated uncongested transport of large woody debris. Trunk entombment and initial preservation resulted from grounding on barforms, anchoring by attached roots and subsequent burial. The post-depositional two-phase silicification was influenced by hydrothermal hematite mineralization and determined a selective wood preservation pattern known as ‘pointstone’. Large woody debris-induced sedimentary structures (‘LWDISS’) are introduced as a class of sediment structures formed by the biogenic impact on terrestrial deposition.
title: Labour Movements and Strikes, Social Conflict and Control, Protest and Repression (Germany)
title: Labour Movements and Strikes, Social Conflict and Control, Protest and Repression (Germany)
Creators: name: Weinhauer, Klaus
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Deutschland
subject: Weltkrieg [1914-1918]
subject: Arbeiterbewegung
subject: World War, 1914-1918
subject: Germany
subject: Labor

description: The First World War and the subsequent years saw a plethora of strikes, protests and competing social movements. The war blocked established channels of communication between workers and their organizations. Locally rooted shop floor and consumption-based collective aid movements filled this representational gap. As of 1916/17, these urban social movements became overtly political and translocally interconnected, and also competed with established workers’ organizations. In the revolution and until 1920/21, they reclaimed urban space, tried to re-establish the unity of the working class (sometimes integrating transnational impulses), and aimed at establishing locally based models of order. In a setting where, until 1920, the state’s monopoly of physical force was contested, they became involved in sometimes violent confrontations with the representatives of a nation state-based understanding of political and social order.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Untersuchungen zur Herstellung von Biokunststoffen durch enzymatische Vernetzung von Proteinen aus nachwachsenden Rohstoffen
Creators: name: Patzsch, Katja
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2010
Subjects: subject: Biokunststoff
subject: Nachwachsender Rohstoff
subject: Online-Publikation
subject: Hochschulschrift
subject: 668.4
subject: 620

description: Biologisch abbaubare Materialien auf Basis nachwachsender Rohstoffe besitzen ein großes Potential für verschiedenste Anwendungen, da sie fossile Rohstoffe schonen und Entsorgungsprobleme beheben. Bei der Stärkeherstellung fallen mehrere Tausend Tonnen Proteine im Jahr als Nebenprodukte an, die bisher überwiegend als Futtermittel vermarktet wurden. Ziel dieser Arbeit war es, diese Pflanzenproteine hinsichtlich ihrer Eignung zur Herstellung von Proteinfilmen zu bewerten. Zusammenfassend kann gesagt werden, dass tierische sowie pflanzliche Proteine prinzipiell für eine Filmherstellung geeignet sind. Die enzymatische Quervernetzung mittels MTG ist dabei aufgrund der überwiegend positiven Einflüsse auf die Eigenschaften von Proteinfilmen eine geeignete Methode zur Optimierung der Filmeigenschaften. Zudem eignen sich die Proteinfilme beispielsweise als Düngefilme, dessen relativ schneller Abbau (Tage-Wochen) Düngemittel freisetzt
Sustaining Saturn's Electron Radiation Belts Through Episodic, Global-Scale Relativistic Electron Flux Enhancements
Creators: name: Yuan, C.-J.
name: Roussos, E.
name: Wei, Y.
name: Krupp, N.
Publisher: name: FID GEO
Year: 2020

description: The L shell distributions of MeV electrons in Saturn's radiation belt are investigated orbit by orbit for the 13-year exploration of Cassini. It is found that in addition to the monotonic decrease profiles, there are orbits showing superimposed transient extensions. The extensions are found to stand out above the background population during 50% of belt crossings. We estimate that there is high probability (>72%) that transient extensions contribute more than 10% electron content in the radiation belt. The high occurrence frequency of one extension every 2–3 weeks, together with the relative content, demonstrate that the extensions constitute a regular and fundamental process populating and sustaining the electron belts of Saturn. The transients regularity excludes interplanetary coronal mass ejections as dominant trigger and implies corotation interaction regions and/or internal processes as candidates. Statistical results suggest that the communication of electrons between the middle magnetosphere and the radiation belts is largely through convective radial transport, which produces transient radiation belt extensions.
title: Lafayette Escadrille
title: Lafayette Escadrille
Creators: name: Gutiérrez, Edward A.
Publisher: name: BSB - Bavarian State Library
Year: 2017
Subjects: subject: Escadrille Lafayette
subject: France. Armée. Escadrille Lafayette

description: The Lafayette Escadrille was a French Air Service fighter squadron formed of American volunteers and commanded by French officers. It served from 20 April 1916 to 18 February 1918. Although their service record did not impress the Germans, their exploits received widespread press coverage in the United States and fed the romanticism associated with the air war.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Magnetospheric Interactions of Saturn's Moon Dione (2005–2015)
Creators: name: Krupp, N.
name: Kotova, A.
name: Roussos, E.
name: Simon, S.
name: Liuzzo, L.
name: Paranicas, C.
name: Khurana, K.
name: Jones, G. H.
Publisher: name: FID GEO
Year: 2020

description: The moon Dione orbits Saturn at 6.2 Saturn radii RS deep in the Kronian magnetosphere. In situ studies of the moon-magnetosphere interaction processes near Dione were possible with the Cassini/Huygens mission which flew by close to Dione five times at distances between 99 and 516 km. In addition, Cassini crossed Dione's L-shell more than 400 times between 2004 and 2017 and documented the variability of Saturn's magnetosphere. Different flyby geometries allowed to study the interaction processes upstream, in the low-energy wake, and above the north pole of Dione. We describe here the energetic particle measurements from the Low Energy Magnetospheric Measurement System (LEMMS), part of the Magnetosphere Imaging Instrument (MIMI) onboard Cassini. We also use hybrid simulation results from “A.I.K.E.F.” to interpret the signatures in the particle fluxes. This paper is a continuation of Krupp et al. (2013, https://doi.org/10.1016/j.icarus.2013.06.007) and Kotova et al. (2015, https://doi.org/10.1016/j.icarus.2015.06.031). The key results are as follows: (1) Saturn's magnetosphere at Dione's orbit is highly variable with changes in energetic charged particle fluxes by 1–2 orders of magnitude. (2) The dropout signatures near Dione are basically consistent with a fully absorbing obstacle, but some features point to more complex interaction processes than plasma and energetic particle absorption. (3) Absorption signatures are found to be asymmetric with respect to the orientation of the moon, indicative of the presence of radial drift components for electrons. (4) The deepest absorption signatures were observed at the edge of the low-energy wake pointing to gradient-B drifts strongest in that part of the interaction region.
Seconda Giornata di Studio Ettore Funaioli: 18 luglio 2008
Creators: name: Meneghetti, Umberto
name: Maggiore, Alberto
name: Parenti Castelli, Vincenzo
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: ING-IND/14 Progettazione meccanica e costruzione di macchine
ING-IND/16 Tecnologie e sistemi di lavorazione
ING-IND/13 Meccanica applicata alle macchine
ING-IND/15 Disegno e metodi dell'ingegneria industriale

description: In questo volume sono raccolte le memorie presentate in occasione della "Seconda giornata di studio Ettore Funaioli", che si è tenuta il 18 luglio 2008 presso la Facoltà di Ingegneria dell'Alma Mater Studiorum - Università di Bologna.
La giornata è stata organizzata dagli ex allievi del Prof. Funaioli con la collaborazione del DIEM, Dipartimento di Ingegneria delle Costruzioni Meccaniche, Nucleari, Aeronautiche e di Metallurgia dell’Alma Mater Studiorum – Università di Bologna e con il patrocinio del GMA – Gruppo di Meccanica Applicata.
title: Self-association and subcellular localization of Puumala hantavirus envelope proteins
Creators: name: Sperber, Hannah Sabeth
name: Welke, Robert-William
name: Petazzi, Roberto Arturo
name: Bergmann, Ronny
name: Schade, Matthias
name: Shai, Yechiel
name: Chiantia, Salvatore
name: Herrmann, Andreas
name: Schwarzer, Roland
Publisher: name: Universität Potsdam
Year: 2019

description: Hantavirus assembly and budding are governed by the surface glycoproteins Gn and Gc. In this study, we investigated the glycoproteins of Puumala, the most abundant Hantavirus species in Europe, using fluorescently labeled wild-type constructs and cytoplasmic tail (CT) mutants. We analyzed their intracellular distribution, co-localization and oligomerization, applying comprehensive live, single-cell fluorescence techniques, including confocal microscopy, imaging flow cytometry, anisotropy imaging and Number&Brightness analysis. We demonstrate that Gc is significantly enriched in the Golgi apparatus in absence of other viral components, while Gn is mainly restricted to the endoplasmic reticulum (ER). Importantly, upon co-expression both glycoproteins were found in the Golgi apparatus. Furthermore, we show that an intact CT of Gc is necessary for efficient Golgi localization, while the CT of Gn influences protein stability. Finally, we found that Gn assembles into higher-order homo-oligomers, mainly dimers and tetramers, in the ER while Gc was present as mixture of monomers and dimers within the Golgi apparatus. Our findings suggest that PUUV Gc is the driving factor of the targeting of Gc and Gn to the Golgi region, while Gn possesses a significantly stronger self-association potential.
description: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, 648
Sincronia e distanza nel ciclo economico delle regioni italiane
Creators: name: Brasili, Andrea
name: Brasili, Cristina
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: SECS-P/02 Politica economica

description: This paper is based on the data set of 20 Italian regional high frequency business indicators proposed in Benni, Brasili (2006) and successively developed by RegiosS (Cycle & Trends association). The aim of the present paper is to provide a retrospective analysis of the characteristics of regional cycles and their co-movements to better understand the consequences of the global crisis on the local economies.
We will going to apply two methodologies to analyse the distances among the Italian regional business cycle. We calculate the cohesion measure (Croux et al. 2001) on two sub-samples of the indicators, in order to evaluate if co-movements have increased recently. Moreover we calculate the cohesion measure also for the regions before and after the adoption of the Euro currency and respect to the Italian cycle. 
On the structural side the differential on cycle profiles of the regions is interpreted in terms of the different product specialisation, the degree of financial markets development and the research intensity of firms.
On the variety parametrizing completely decomposable polynomials.
Creators: name: Arrondo, Enrique
name: Bernardi, Alessandra
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: MAT/03 Geometria

description: The purpose of this paper is to relate
the variety parameterizing completely decomposable
homogeneous polynomials of degree $d$ in $n+1$ variables on
an algebraically closed field, called
$\Split_{d}(\PP n)$, with the Grassmannian of $n-1$
dimensional projective subspaces of $\PP {n+d-1}$. We compute
the dimension of some secant varieties to
$\Split_{d}(\PP n)$ and find a counterexample to a conjecture
that wanted its dimension related to the one of the secant
variety to $\GG (n-1, n+d-1)$. Moreover by using an invariant
embedding of the Veronse variety into the Pl\"ucker space, then
we are able to compute the intersection of $\GG (n-1,
n+d-1)$ with
$\Split_{d}(\PP n)$, some of its secant variety, the tangential
variety and the second osculating space to the Veronese
variety.
Verfahren zur Identifizierung aromabedeutsamer flüchtiger Verbindungen in Kräutern mittels gaschromatographischer, sensorischer und chemometrischer Methoden am Beispiel von Oregano
Creators: name: Bansleben, Anne-Christin
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2011
Subjects: subject: Online-Publikation
subject: Hochschulschrift
subject: Oregano
subject: Aromastoff
subject: Chemometrie
subject: 664.8057
subject: 540

description: Ziel der Arbeit war es, eine Methode zu entwickeln, um stark aromatische Kräuter sensorisch zu charakterisieren und die das Aroma maßgeblich bestimmenden Verbindungen zu identifizieren. Genutzt wurden hierfür die Sensorik, die GC-O und die GC-MS. Für die Untersuchungen wurden die drei Haupthandelssorten von Oregano des europäischen Marktes ausgewählt. Dabei handelt es sich um Origanum onites, Origanum vulgare spp. hirtum und eine Mischprobe aus verschiedenen Genotypen. Um die Ergebnisse der klassischen Sensorik und GC-O miteinander korrelieren zu können, wurde die Chemometrik mit dem Ziel eingesetzt, große Datenmengen unterschiedlicher Erhebungen zu strukturieren und auf wesentliche Merkmale zu reduzieren. Durch die Berechnungen mittels Clusteranalyse wurde gezeigt, dass sich die untersuchten Sorten in zwei Cluster aufteilen lassen. Mittels Auswertung der olfaktometrischen Daten durch die Faktorenanalyse konnten auch die Verbindungen ermittelt werden, die dieses Aroma der Sorten maßgeblich prägen. Zukünftige Untersuchungen können mittels dieser Methode unter Einbeziehung chemometrischer Methoden schneller und zielgerichteter durchgeführt werden.
Русский язык и многоязычная Европа
Creators: name: Berardi, Simona
name: Buglakova, Liudmila
name: Lasorsa Siedina, Claudia
name: Preti, Vanio
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2009
Subjects: L-LIN/21 Slavistica
L-LIN/02 Didattica delle lingue moderne

description: 2007 was declared by Vladimir Putin, former President of the Russian Federation, «Year of the Russian Language» (Decree n. 1488 of 29.12.2006. In Italy, the first important initiative undertaken at the national level was the Russian Language Week in Italy (October 27 – November 2006), organized by the «Foro di Dialogo Italo-russo delle società civili» held in Verona, Bologna, Florence, Perugia, Siena and Rome.  Following the Italian Presidential Decree, the Centro Linguistico dei  Scientifico-Didattici della Romagna (CLIRO) – University of Bologna, which in the past had organized events and created didactic resources for Russian language learning for many years (TORFL’s certification from 2005: www.torfl.it, creation of multimedia self-learning courses like Kraski A1, Kraski A2: www.kraski.it), organized the international convention: L'Europa delle lingue e il russo: certificazione, istituzioni e strumenti per una nuova mediazione (CIEURUS) held in Forlì on February 26 – 27, 2008.
Topics for discussion within the CIEURUS considered position of the Russian language within a multilingual Europe in order to promote intercultural mutual understanding and to encourage relations between Italy and Russia by means of a constant dialogue on common interests. International experts interested in the current state of Russian language didactics, certifications (TORFL) and language learning came from the Russian Federation, Poland, Czech Republic, Kazakhstan and Armenia to participate at the convention. The active participation of some of the most important Russian language institutions representatives gave space to a lively and concrete debate. Some of these representatives were: Yury Cheban , General Director of the Russian Language Head Testing Center for Non-Native Speakers, Claudia Lasorsa Siedina, President of AIR and Member of MAPRYAL, Stefano Garzonio, President of AIS and Igor Lysenko, representing RUSINTERCENTER at the Russian Federation Embassy.