cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Load distribution in a roller-type rotor blade bearing
Creators: name: Stammler, Matthias
name: Baust, Sebastian
name: Reuter, Andreas
name: Poll, Gerhard
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: Curve fitting
subject: Electric power plant loads
subject: Rollers (machine components)
subject: Stiffness
subject: Torque
subject: Turbine components
subject: Turbomachine blades
subject: Wind turbines
subject: Bearing rollers
subject: Fatigue lifetime
subject: Finite element simulations
subject: Load distributions
subject: Load magnitude
subject: Parameter combination
subject: Rolling bearings
subject: Varying stiffness
subject: Roller bearings
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::600 | Technik

description: Pitch bearings of wind turbines are large, grease-lubricated rolling bearings that connect the rotor blades with the rotor hub. Rolling bearings are the standard bearing type for this application. Most blade bearings are four-point bearings with one or two rows. Three-row roller bearings with two axial rows and one radial row have higher costs, but are an increasingly used alternative. Both rotor blade and rotor hub have a varying stiffness along the circumference of the bearing rings. This results in rotationally non-symmetric load sharing (load distributions) of the bearing rollers. The load distribution depends on the pitch angle, the load magnitude and the load angle. In this paper, we evaluate the load sharing of such a three-row bearing for a reference wind turbine of the 3 MW-class, taking account of the stiffness of the interface parts hub and rotor blade. A set of finite-element simulations with varying loads, load angles and pitch angles has been executed to determine the influence of the named parameters on the loads of the individual rollers. Curve fits of these discrete load points allow the determination of roller loads for any given parameter combination. One application of the results is the determination of the overall bearing load which is a key input for fatigue lifetime calculations.
Pulsatilla alpina subsp. sulphurea
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. alpina ssp. sulphurea X vemalis - 3: Diebjen bei Zeneggen (Terretaz 1954); Findelen bei Zermatt (Wolf 1896).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Steps towards a solution of the FS Aurigae puzzle. II. Confirmation of the intermediate polar status
Creators: name: Neustroev, V. V.
name: Tovmassian, G. H.
name: Zharikov, S. V.
name: Sjoberg, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: FS Aur is famous for a variety of uncommon and puzzling periodic photometric and spectroscopic variabilities. It was previously proposed that the precession of a fast-rotating magnetically accreting white dwarf can successfully explain these phenomena. We present a study of FS Aur based on two extensive sets of optical photometric observations and three X-ray data sets in which we intended to verify whether the observational properties of the long period modulations observed in FS Aur and V455 And are similar in appearance to the spin modulation in ordinary IPs. These new optical observations have revealed, for the first time in photometric data, the variability with the presumed precession period of the white dwarf, previously seen only spectroscopically. We also found that the modulations with the precession and orbital periods are evident in X-ray data. We show that the observed properties of FS Aur closely resemble those of other intermediate polars, thus confirming this cataclysmic variable as a member of the class. Our analysis of multicolour observations of intermediate polars has shown that time-series analysis of colour indices appears to be a powerful technique for revealing hidden variabilities and shedding light on their nature. We have found that the (B-I) power spectrum of V1223 Sgr indicates the presence in the data of the spin pulsation which is not seen in the optical light curve at all. Also, the analysis of the colour indices of V455 And revealed the presence of the photometric variations which, similarly to FS Aur, was previously observed only spectroscopically.
description: 19 pages, 17 figures, Accepted for publication in Monthly Notices of the Royal Astronomical Society Main Journal
Universal and optimal error thresholds for measurement-based entanglement purification
Creators: name: Zwerger, M.
name: Briegel, H. J.
name: Dür, W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate measurement-based entanglement purification protocols (EPP) in the presence of local noise and imperfections. We derive a universal, protocol-independent threshold for the required quality of the local resource states, where we show that local noise per particle of up to 24% is tolerable. This corresponds to an increase of the noise threshold by almost an order of magnitude, based on the joint measurement-based implementation of sequential rounds of few-particle EPP. We generalize our results to multipartite EPP, where we encounter similarly high error thresholds.
title: »Celtic Fields« and other prehistoric field systems in historical forests of Schleswig-Holstein from laser-scan dates
Creators: name: Arnold, Volker
Publisher: name: University Library Heidelberg
Year: 2016

description: Das neue, in Schleswig-Holstein vorliegende, engmaschige Laserscan-Höhengitter ermöglichte es, in Altwäldern zahlreiche urgeschichtliche Ackersysteme entweder neu zu entdecken oder erstmals in ihrem gesamten Umfang zu er fassen. Dabei zeigt sich, dass Celtic Fields im eigentlichen Sinne in Wäldern der Altmoräne und flacheren Teilen der Jungmoräne anzutreffen sind, während in der kuppigen Jungmoränenlandschaft eher irreguläre Bank-Senken-Feldsysteme (IBSFs) vorkommen, die zu Terrassensystemen sowie Celtic Fields jeden Übergang bilden können. Außer bei dem in die Zeit um Christi Geburt einzuordnenden Gehege Außelbek bei Ülsby (Kr. Schleswig-Flensburg) bleibt die Datierung für die anderen Ackersysteme offen. Indizien sprechen dafür, dass sie im Einzelfall von Wölbäckern mittelalterlichen Typs überprägt wurden und gelegentlich mit Siedlungsfunden der vorrömischen Eisenzeit oder der älteren römischen Kaiserzeit in Verbindung zu bringen sind.
description: The new close-meshed network of laser scanned levels in Schleswig-Holstein enables us to either re-discover or newly discover numerous prehistoric field systems in their full extent in ancient forests. It is demonstrated that »Celtic Fields« in their true sense appear in the forests of old moraines and shallower parts of young moraines whereas irregular »Bank-Senken-Feld« systems (IBSFs) rather occur in hilly landscapes of young moraines and can merge to terrace systems and »Celtic fields«. Except for the enclosure from Außelbek at Ülsby (Kr. Schleswig-Flensburg) dating to the period around the birth of Christ, the chronology of the other field systems remains unknown. It is indicated that in single cases they are overlain by ridges ands furrows of the Medieval type and occasionally associated with settlements of the pre-Roman Iron Age and the Earlier Roman Principate.
Influence of process parameters on the hot stamping of carbon-martensitic chromium steel sheets
Creators: name: Behrens, Bernd-Arno
name: Hübner, S.
name: Sunderkötter, C.
name: Gebel, L.
name: Gnaß, S.
name: Berndt, G.
name: Trimborn, C.
name: Pfeffer, C.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: Cooling
subject: Deep drawing
subject: Design of experiments
subject: Drawing (forming)
subject: Forging machines
subject: Manganese alloys
subject: Martensite
subject: Mechanical properties
subject: Stamping
subject: Strain rate
subject: Tempering
subject: Tensile strength
subject: Tensile testing
subject: Automobile applications
subject: Automobile lightweights
subject: Critical cooling rate
subject: Heat-treatable steel
subject: Hot stamping process
subject: Influence of process parameters
subject: Martensite start temperature
subject: Strength and elongations
subject: Martensitic stainless steel
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Hot-stamped components are an important part in steel-intensive automobile lightweight design in which the use of the heat-treatable steel 22MnB5 has been established. However, the field of application is limited by the low elongation at break in the hardened state. In order to improve ductility and consequently the crash-performance, the formation of martensite can be locally suppressed. This process known as tailored tempering is accompanied by decreasing tensile strength. Regarding its lightweight potential, 22MnB5 is reaching its limits and new materials come into focus. Promising potential to fulfil the mentioned demands is offered by carbon-martensitic chromium steels. Besides improved tensile strength and elongation at break, this material series has further advantages. Due to its low critical cooling rate, the formation of martensite is achieved in the hot stamping process as well as by cooling at ambient temperature. Moreover, the low martensite-start-temperature allows the use of thin material sheets. However, the process management required to achieve the respective demands for automobile applications is not trivial. Considering the materials X20Cr13 and X46Cr13, this study investigates the influence of varying process parameters on mechanical properties. In order to comprehend the relationship between solution annealing and tempering parameters, a design of experiments has been performed by means of tensile tests. In addition, miniature tensile tests were conducted to obtain flow curves at varying forming temperatures and to examine the effects of varying cooling and strain rates.
Cuidado - Uma intuição tornada conceito em Maria de Lourdes Pintasilgo
Creators: name: Carrilho, Marília Rosado
Publisher: name: Instituto de Estudos Filosóficos
Year: 2022
Subjects: Cuidado
Intuição
Maria de Lourdes Pintasilgo

description: Conferência ministrada por  Marília Rosado Carrilho e presidida por Mário Santiago de Carvalho no âmbito do evento organizado pelo Instituto de Estudos Filosóficos da Faculdade de Letras da Universidade de Coimbra intitulado "Para uma ética e uma política do cuidado: Em torno dos paradigmas de Maria de Lourdes Pintasilgo", coordenado por João Maria André. Este evento contou também com apresentações de Maria Fernanda Henriques, Isabel Allegro de Magalhães e Irene Borges-Duarte.
title: The ceramic material from the Roman Iron Age settlement »Uttumer Escher« (Gde. Krummhörn, Lkr. Aurich) – typology and analysis of organically tempered pottery
Creators: name: Siegmüller, Annette
name: Struckmeyer, Katrin
Publisher: name: University Library Heidelberg
Year: 2016

description: Die Analyse der Keramik von der Siedlungsstelle Uttumer Escher ist Teil eines DFG-geförderten Projektes, bei dem alle ufernahen Fundkomplexe der unteren Weser und der unteren Ems aus der römischen Kaiserzeit in Hinblick auf eine mögliche Funktion als Landeplatz untersucht werden. Die Keramik vom Uttumer Escher fiel dabei durch den ungewöhnlich hohen Anteil organisch gemagerter Keramik auf, der auf eine Produktionsvariante verweist, die schon von einigen gleichzeitigen Siedlungen beiderseits der Ems bekannt ist. Zur genaueren Untersuchung dieser zeitlich eng begrenzten, regionalen Herstellungstradition wurden typologische Vergleiche und Keramikanalysen durchgeführt, die den bereits vermuteten produktionstechnischen Sonderweg bei dieser Warenart bestätigt haben. Auch im niederländischen Siedlungsgebiet ist diese Keramik vielfach belegt, wird aber etwas abweichend datiert. Ein kritischer Vergleich der Datierungsgrundlagen der einzelnen Fundplätze beider Länder führte jedoch dazu, dass es sich durchaus um ein gleichzeitiges Phänomen handeln könnte, das mit der Notwendigkeit, kalkhaltige Tone mit speziellen Magerungen zu verarbeiten, erklärt werden kann.
description: The analysis of pottery from the settlement Uttumer Escher is part of a DFG project which studies all riverside find complexes of the Roman Iron Age on the lower Weser and the lower Ems rivers in order to identify their possible function as wharves/piers. The pottery from Uttumer Escher stands out for their unusually high proportion of organically tempered ceramic ware reflecting a pottery variant, which is already known from other contemporary settlements astride the Ems. Typological comparisons and pottery analyses were conducted for a closer examination of this chronologically restricted and regional pottery tradition. They confirmed the already assumed peculiar manufacturing engineering. There is also frequent evidence for this pottery in the Dutch settlement area, although with different dating. A critical review of the basis of dating on the individual sites in both countries reveals that it could well be a contemporary phenomenon rendered possible by the necessity to add special temper to limey clay.
Suppression of the Rayleigh-Plateau instability on a vertical fibre coated with wormlike micelle solutions
Creators: name: Boulogne, François
name: Fardin, Marc-Antoine
name: Lerouge, Sandra
name: Pauchard, Ludovic
name: Giorgiutti-Dauphiné, Frédérique
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We report on the Rayleigh-Plateau instability in films of giant micelles solutions coating a vertical fibre. We observe that the dynamics of thin films coating the fibre could be very different from the Newtonian or standard Non-Newtonian cases. By varying the concentration of the components of the solutions and depending on the film thickness, we show for the first time that the Rayleigh-Plateau instability can be stabilized using surfactant solutions. Using global rheology and optical visualisations, we show that the development of shear-induced structures is required to stabilize the micellar film along the fibre. Assuming that the viscoelastic properties of the shear-induced state can be described by a simple model, we suggest that, in addition to the presence of shear-induced structures, the latter must have an elastic modulus greater than a critical value evaluated from a linear stability analysis. Finally, our analysis provides a way of estimating the bulk elasticity of the shear-induced state.
description: 14 pages, 9 figures. Accepted in Soft Matter
Generative Design Approach for Modeling Creative Designs
Creators: name: Li, Haibing
name: Lachmayer, Roland
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: Aerospace engineering
subject: Knowledge based systems
subject: Product design
subject: Computer-aided optimizations
subject: Creative design
subject: Design alternatives
subject: Design elements
subject: Design knowledge
subject: Design problems
subject: Generative design
subject: Knowledge based
subject: Computer aided design
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Design problems with variable requirements force designers to explore multiple alternatives between problem space and solution space of a design task. Despite several methods have been already proposed, CAD models hardly meet these variable requirements. To close this research gap, this study develops a generative design approach, addressing the automation of designing alternatives by capturing design knowledge into a set of design elements. These elements use essentially knowledge-based parametrics in terms of design requirements. Such design elements are used to assist designers in the creation of required design variants. Thus, the exploration of design alternatives is transformed into configuration of desired design elements. As a result, the invested time in routine work is reduced and designers are able to concentrate on the exploration of required design alternatives. Moreover, the output configuration also offers potentials in computer-aided optimization, since the design elements not only capture the design knowledge, but also incorporate manufacturing restrictions. At last, this approach is illustrated by taking a bicycle peddle crank as an example.
Photoinduced inverse spin Hall effect in Pt/Ge(001) at room temperature
Creators: name: Bottegoni, Federico
name: Ferrari, Alberto
name: Cecchi, Stefano
name: Finazzi, Marco
name: Ciccacci, Franco
name: Isella, Giovanni
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We performed photoinduced inverse spin Hall effect (ISHE) measurements on a Pt/Ge(001) junction at room temperature. The spin-oriented electrons, photogenerated at the direct gap of Ge using circularly polarized light, provide a net spin current which yields an electromotive field E_ISHE in the Pt layer. Such a signal is clearly detected at room temperature despite the strong Γ to L scattering which electrons undergo in the Ge conduction band. The ISHE signal dependence on the exciting photon energy is in good agreement with the electron spin polarization expected for optical orientation at the direct gap of Ge.
Experimental setup to characterize flow-induced anisotropy of sheet metals
Creators: name: Gutknecht, F.
name: Gerstein, G.
name: Traphöner, H.
name: Clausmeyer, T.
name: Nürnberger, F.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: Anisotropy
subject: Deep drawing
subject: Hardening
subject: Plastic deformation
subject: Sheet metal
subject: Yield stress
subject: Deep drawing steel
subject: Flow-induced anisotropy
subject: Forming forces
subject: Hardening effects
subject: Hydraulic bulge test
subject: Load paths
subject: Manufacturing process
subject: Spring-back
subject: Drawing (forming)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: For many metals, a transient variation of the yield stress can be observed when changing the orientation of a load-path. Such behavior affects the manufacturing process itself, e.g. by increasing forming forces, altered material properties or springback of the manufactured components. Hence, the aim of this work is to develop a novel experimental setup to characterize hardening effects due to flow-induced anisotropy for sheet metals. The proposed experiment consists of two subsequent forming operations. Initially, a hydraulic bulge test is conducted, followed by torsion of the hemispherical preformed sheet. Such approach captures the effects of flow-induced anisotropy like cross hardening as could be proved for the example of the conventional deep-drawing steel DC04. The benefits of the presented setup are (i) high plastic strains in the pre-loading step and (ii) determination of several combinations of pre- and subsequent loading.
The unilateral Presidency, federal budgeting, and the impact to environmental policy: from the Carter through the Trump administrations (1977-2021)
Creators: name: Ortiz, Raymond
Publisher: name: No Publisher Supplied
Year: 2022

description: Our current political environment is filled with conflict and polarization, where partisanship reigns, true collaboration among parties has faded to near nonexistence over the last two decades, and leaders find their hands tied in progressing their respective agendas. In these politically fractious times, the United States finds itself in a constitutional crisis as the balance of powers across our government has shifted and concentrated within the executive, resulting in frequent broad stroke unilateral actions by the President. As the modern administrative state continues to grow and become ever more pervasive, the intended and unintended consequences start to surface resulting in a need for researchers and practitioners to understand the complexities of this political state. The purpose of this study is to understand the administrative presidency by discussing its constitutionality, determining its effect on federal budget outlays, and identifying its impact to public policy. This study focuses on environmental policy and the agencies charged with its implementation – the Environmental Protection Agency (EPA), Department of Agriculture (USDA), Department of the Interior, and Department of Energy (DOE). Certified U.S. budget data for agency outlays covering the span of the Carter through Trump presidential administrations (1977-2021) is utilized in a mixed methods approach, inclusive of a historical analysis, regression analysis, and case study design.Findings support that: (1) executive orders and party affiliation result in changes to budget outlays; (2) changes in outlays affecting the EPA result in similar changes across agencies due to existing shared regulatory mechanisms, with some exceptions; and (3) unilateral action is deeply rooted in growth, progress, and evolution of environmental policy. The analysis concludes with reflection on the current constitutional crisis regarding the administrative presidency and outlines emergent themes that bring about a clearer path for anticipating behaviors, predicting effects, and mitigating adverse impacts across all policy areas.
Using metallic photonic crystals as visible light sources
Creators: name: Belousov, Sergei
name: Bogdanova, Maria
name: Deinega, Alexei
name: Eiderman, Sergey
name: Valuev, Ilya
name: Lozovik, Yurii
name: Polischuk, Ilya
name: Potapkin, Boris
name: Ramamurthi, Badri
name: Deng, Tao
name: Midha, Vikas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we study numerically and experimentally the possibility of using metallic photonic crystals (PCs) of different geometries (log-piles, direct and inverse opals) as visible light sources. It is found that by tuning geometrical parameters of a direct opal PC one can achieve substantial reduction of the emissivity in the infrared along with its increase in the visible. We take into account disorder of the PC elements in their sizes and positions, and get quantitative agreement between the numerical and experimental results. We analyze the influence of known temperature-resistant refractory host materials necessary for fixing the PC elements, and find that PC effects become completely destroyed at high temperatures due to the host absorption. Therefore, creating PC-based visible light sources requires that low-absorbing refractory materials for embedding medium be found.
description: 9 pages, 15 figures
Femtosecond laser-based nanosurgery reveals the endogenous regeneration of single Z-discs including physiological consequences for cardiomyocytes
Creators: name: Müller, Dominik
name: Hagenah, Dorian
name: Biswanath, Santoshi
name: Coffee, Michelle
name: Kampmann, Andreas
name: Zweigerdt, Robert
name: Heisterkamp, Alexander
name: Kalies, Stefan M.K.
Publisher: name: London : Nature Publishing Group
Year: 2019
Subjects: subject: nanosurgery
subject: Z-disc
subject: cardiomyocyte
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik

description: A highly organized cytoskeleton architecture is the basis for continuous and controlled contraction in cardiomyocytes (CMs). Abnormalities in cytoskeletal elements, like the Z-disc, are linked to several diseases. It is challenging to reveal the mechanisms of CM failure, endogenous repair, or mechanical homeostasis on the scale of single cytoskeletal elements. Here, we used a femtosecond (fs) laser to ablate single Z-discs in human pluripotent stem cells (hPSC) -derived CMs (hPSC-CM) and neonatal rat CMs. We show, that CM viability was unaffected by the loss of a single Z-disc. Furthermore, more than 40% of neonatal rat and 68% of hPSC-CMs recovered the Z-disc loss within 24 h. Significant differences to control cells, after the Z-disc loss, in terms of cell perimeter, x- and y-expansion and calcium homeostasis were not found. Only 14 days in vitro old hPSC-CMs reacted with a significant decrease in cell area, x- and y-expansion 24 h past nanosurgery. This demonstrates that CMs can compensate the loss of a single Z-disc and recover a regular sarcomeric pattern during spontaneous contraction. It also highlights the significant potential of fs laser-based nanosurgery to physically micro manipulate CMs to investigate cytoskeletal functions and organization of single elements. © 2019, The Author(s).
Improving technological machining simulation by tailored workpiece models and kinematics
Creators: name: Böß, Volker
name: Denkena, Berend
name: Breidenstein, B.
name: Dittrich, Marc-Andre
name: Nguyen, H.N.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2019
Subjects: subject: Geometric modelling
subject: Grinding
subject: Milling
subject: Simulation
subject: Geometry
subject: Kinematics
subject: Machining centers
subject: Metal cutting
subject: Milling (machining)
subject: Chronological sequences
subject: Geometric representation
subject: Machine tool systems
subject: Machining Process
subject: Machining simulation
subject: Process condition
subject: Grinding (machining)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Geometric modelling is an established approach for gathering detailed knowledge about the chronological sequence of process conditions and for determining technological values of machining processes such as milling, turning, grinding or additive manufacturing. Performance and accuracy essentially depend on the chosen workpiece model and its parametrization. Furthermore, several influences on the investigated machine tool system lead to errors, which must be modeled separately. This paper shows approaches to increase performance and accuracy of the simulation by choosing an appropriate combination of different geometric representations of the workpiece and by considering possible errors within the kinematic model. Examples for different applications in metal cutting are given.
Callianthemum coriandrifolium Rchb.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. coriandrifolium Rchb. (C. rutifolium C. A. Meyer p.p. - non C. rutifolium Rchb., Witasek, Hayek, Hegi,Aschers,et Graebn.; Ranunculus rutifolius L. p.p.) Cat. 5. In der ssp. coriandrifolium (Rchb.) Witasek (ssp. eu-coriandrifolium A. et G., ssp. Berardii [Vill.] P. Fournier). 3: Angeblich ob der Alp Composana im Val de Zinal (Hellmayr 1939, ohne Beleg; zu bestätigen); bei Zermatt auch am Theodulweg nördlich Gartfad (Becherer 1945); Saastal: die alte Angabe Monte Moro ist zu bestätigen; diejenige aus der Umgebung von Saas-Fee (Lüdi Lit. 1951a, S.36) ist nicht sicher. - 3a: Angeblich Sirwolten (Wolf 1904 in herb. de Palezieux); unglaubwürdig (vgl. das bei Stellaria Holostea über Wolf Gesagte); der Verf. suchte 1943 mit L. Arnold im Gebiet des Sirwoltensees die Art ohne Erfolg. - 4: Die Angaben aus dem Binntal und vom Griespass sind zu bestätigen. Für beide Gebiete steht im Cat. neben den alten Angaben das Zeichen für Eigenbeobachtung (d. h. Jaccard), doch sind Jaccardsche Belegexemplare nicht aufzutreiben.Die de Saussuresche Angabevom Griespass ist verdächtig:beiH.-B. de Saussure,Voyages dans les Alpes, Bd. III, S.495 (1796), steht nämlich die Art in einer Liste, die nicht wohl ernst genommen werden kann, enthält sie doch mehrere ganz off enkundig irrtümlich für die Passhöhe des Gries angegebene Arten (Androsace villosa. Primula Auricula, Cardamine trifolia [!]).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Interference of clocks: A quantum twin paradox
Creators: name: Loriani, Sina
name: Abend, Sven
name: Gaaloul, Naceur
name: Meiners, Christian
name: Schubert, Christian
name: Tell, Dorothee
name: Wodey, Étienne
name: Ertmer, Wolfgang
name: Schlippert, Dennis
name: Rasel, Ernst M.
Publisher: name: Washington : American Association for the Advancement of Science (A A A S)
Year: 2019
Subjects: subject: Clocks
subject: Gravitation
subject: Interferometers
subject: Atom interferometer
subject: Clock transition
subject: Light pulse
subject: Linear potential
subject: Matter waves
subject: Pulse sequence
subject: Relativity
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: The phase of matter waves depends on proper time and is therefore susceptible to special-relativistic (kinematic) and gravitational (redshift) time dilation. Hence, it is conceivable that atom interferometers measure generalrelativistic time-dilation effects. In contrast to this intuition, we show that (i) closed light-pulse interferometers without clock transitions during the pulse sequence are not sensitive to gravitational time dilation in a linear potential. (ii) They can constitute a quantum version of the special-relativistic twin paradox. (iii) Our proposed experimental geometry for a quantum-clock interferometer isolates this effect. © 2019 The Authors.
First search for double-beta decay of 184Os and 192Os
Creators: name: Belli, P.
name: Bernabei, R.
name: Cappella, F.
name: Cerulli, R.
name: Danevich, F. A.
name: d'Angelo, S.
name: Di Marco, A.
name: Incicchitti, A.
name: Kovtun, G. P.
name: Kovtun, N. G.
name: Laubenstein, M.
name: Poda, D. V.
name: Polischuk, O. G.
name: Shcherban, A. P.
name: Tretyak, V. I.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A search for double-beta decay of osmium has been realized for the first time with the help of an ultra-low background HPGe gamma detector at the underground Gran Sasso National Laboratories of the INFN (Italy). After 2741 h of data taking with a 173 g ultra-pure osmium sample limits on double-beta processes in 184Os have been established at the level of T_{1/2} about 10^{14}-10^{17} yr. Possible resonant double-electron captures in 184Os were searched for with a sensitivity T_{1/2} about 10^{16} yr. A half-life limit T_{1/2} > 5.3 10^{19} yr was set for the double-beta decay of 192Os to the first excited level of 192Pt. The radiopurity of the osmium sample has been investigated and radionuclides 137Cs, 185Os and 207Bi were detected in the sample, while activities of 40K, 60Co, 226Ra and 232Th were limited at the mBq/kg level.
description: 12 pages, 7 figures, 2 tables
Electrospray sample injection for single-particle imaging with x-ray lasers
Creators: name: Bielecki, Johan
name: Hantke, Max F.
name: Daurer, Benedikt J.
name: Reddy, Hemanth K.N.
name: Hasse, Dirk
name: Larsson, Daniel S.D.
name: Gunn, Laura H.
name: Svenda, Martin
name: Iwan, Bianca
Publisher: name: Washington : American Association for the Advancement of Science (A A A S)
Year: 2019
Subjects: subject: Aerosols
subject: Contamination
subject: Drops
subject: Proteins
subject: X rays
subject: Aerosolization
subject: High temporal resolution
subject: Large particles
subject: Protein structures
subject: Pulse intensity
subject: Sample injection
subject: Single particle
subject: Small particles
subject: X ray lasers
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: The possibility of imaging single proteins constitutes an exciting challenge for x-ray lasers. Despite encouraging results on large particles, imaging small particles has proven to be difficult for two reasons: not quite high enough pulse intensity from currently available x-ray lasers and, as we demonstrate here, contamination of the aerosolized molecules by nonvolatile contaminants in the solution. The amount of contamination on the sample depends on the initial droplet size during aerosolization. Here, we show that, with our electrospray injector, we can decrease the size of aerosol droplets and demonstrate virtually contaminant-free sample delivery of organelles, small virions, and proteins. The results presented here, together with the increased performance of next-generation x-ray lasers, constitute an important stepping stone toward the ultimate goal of protein structure determination from imaging at room temperature and high temporal resolution. © 2019 The Authors.
„Ellos tienen Mallorca, nosotros tenemos Berlín“ : Das didaktische Potential des Hyperfictionromans Elija su propia aventura en Berlín zur Dekonstruktion von kulturspezifischen Stereotypen und Reflexion von Kulturstandards im interkulturellen Spanischunterricht der Sekundarstufe II
Creators: name: Fischer, Anna-Malena
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2022
Subjects: subject: Hiperficción
subject: Elija su propia aventura en Berlín
subject: Competencia intercultural
subject: Estereotipos
subject: Estándares culturales
subject: ELE
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::370 | Erziehung, Schul- und Bildungswesen

description: La competencia intercultural está avanzando para convertirse en una competencia clave relevante tanto en la educación escolar como en la no escolar. En este contexto, la enseñanza de español como lengua extranjera (ELE) contribuye de manera específica. Atendiendo a esto, los estereotipos y diferentes estándares culturales desempeñan un papel muy importante porque influyen a su vez en la enseñanza y el aprendizaje de lenguas extranjeras. Existe un consenso en la investigación de que los textos literarios están cualificados para el fomento de la competencia intercultural. Sin embargo, se puede constatar que a menudo se seleccionan obras literarias sin justificación y que se ha establecido un canon literario fijo de clásicos que se reproduce continuamente y sin reflexión. La hiperficción Elija su propia aventura en Berlín, en particular consigue romper este impulso restrictivo y representa un ejemplo especialmente fructífero de fomento de la competencia intercultural porque logra establecer incentivos inéditos. Cuenta la historia de un/a emigrante español/a en Berlín y es especialmente adecuada para trabajar los estereotipos y normas culturales. La hiperficción es una novedad en la literatura digital, su peculiaridad estructural radica en la interactividad del/ de la lector/a con la historia, lo que abre la posibilidad de intervención directa y control sobre el curso de la acción. El destino de la/del protagonista está en manos del/de la lector/a, ya que es el/la representante del/ de la protagonista y decide si la historia continúa o termina y cómo lo hace. Esto abre un potencial de innovación, especialmente a nivel didáctico de ELE, que debe ser explotado adecuadamente. No obstante, el empleo de la hiperficción para la enseñanza de lenguas extranjeras, especialmente para la adquisición de competencias interculturales, no ha sido explorado. En consecuencia, el objetivo del siguiente trabajo será llenar un vacío de investigación y a largo plazo, los resultados deberían estimular el enfoque y el establecimiento de formatos de texto innovadores en la clase de ELE. A continuación, una parte práctica, en la que se ilustrará el valor añadido didáctico e innovador en ejemplo de la hipernovela Elija su propia aventura en Berlín en cuanto a su potencial para superar los estereotipos culturales y reflexionar sobre los estándares culturales tanto españolas como alemanas.
Convergence of AMR and SPH simulations - I. Hydrodynamical resolution and convergence tests
Creators: name: Hubber, D. A.
name: Falle, S. A. E. G.
name: Goodwin, S. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We compare the results for a set of hydrodynamical tests performed with the AMR finite volume code, MG and the SPH code, SEREN. The test suite includes shock tube tests, with and without cooling, the non-linear thin-shell instability and the Kelvin-Helmholtz instability. The main conclusions are : (i) the two methods converge in the limit of high resolution and accuracy in most cases. All tests show good agreement when numerical effects (e.g. discontinuities in SPH) are properly treated. (ii) Both methods can capture adiabatic shocks and well-resolved cooling shocks perfectly well with standard prescriptions. However, they both have problems when dealing with under-resolved cooling shocks, or strictly isothermal shocks, at high Mach numbers. The finite volume code only works well at 1st order and even then requires some additional artificial viscosity. SPH requires either a larger value of the artificial viscosity parameter, alpha_AV, or a modified form of the standard artificial viscosity term using the harmonic mean of the density, rather than the arithmetic mean. (iii) Some SPH simulations require larger kernels to increase neighbour number and reduce particle noise in order to achieve agreement with finite volume simulations. However, this is partly due to the need to reduce noise that can corrupt the growth of small-scale perturbations. In contrast, instabilities seeded from large-scale perturbations do not require more neighbours and hence work well with standard SPH formulations and converge with the finite volume simulations. (iv) For purely hydrodynamical problems, SPH simulations take an order of magnitude longer to run than finite volume simulations when running at equivalent resolutions, i.e. when they both resolve the underlying physics to the same degree. This requires about 2-3 times as many particles as the number of cells.
description: 19 pages, 9 figures, 1 table, accepted for publication in MNRAS
Enhanced absorption in all-dielectric metasurfaces due to magnetic dipole excitation
Creators: name: Terekhov, Pavel D.
name: Baryshnikova, Kseniia V.
name: Greenberg, Yakov
name: Fu, Yuan Hsing
name: Evlyukhin, Andrey B.
name: Shalin, Alexander S.
name: Karabchevsky, Alina
Publisher: name: London : Nature Publishing Group
Year: 2019
Subjects: subject: nanophotonic
subject: nanoscience
subject: all-dielectric metasurfaces
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::600 | Technik

description: All-dielectric nanophotonics lies at a forefront of nanoscience and technology as it allows to control light at the nanoscale using its electric and magnetic components. Bulk silicon does not experience any magnetic response, nevertheless, we demonstrate that the metasurface made of silicon parallelepipeds allows to excite the magnetic dipole moment leading to the broadening and enhancement of the absorption. Our investigations are underpinned by the numerical predictions and the experimental verifications. Also surprisingly we found that the resonant electric quadrupole moment leads to the enhancement of reflection. Our results can be applied for a development of absorption based devices from miniature dielectric absorbers, filters to solar cells and energy harvesting devices. © 2019, The Author(s).
Herschel Observations of Gas and Dust in the Unusual 49 Ceti Debris Disk
Creators: name: Roberge, A.
name: Kamp, I.
name: Montesinos, B.
name: Dent, W. R. F.
name: Meeus, G.
name: Donaldson, J. K.
name: Olofsson, J.
name: Moor, A.
name: Augereau, J. -C.
name: Howard, C.
name: Eiroa, C.
name: Thi, W. -F.
name: Ardila, D. R.
name: Sandell, G.
name: Woitke, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present far-IR/sub-mm imaging and spectroscopy of 49 Ceti, an unusual circumstellar disk around a nearby young A1V star. The system is famous for showing the dust properties of a debris disk, but the gas properties of a low-mass protoplanetary disk. The data were acquired with the Herschel Space Observatory PACS and SPIRE instruments, largely as part of the "Gas in Protoplanetary Systems" (GASPS) Open Time Key Programme. Disk dust emission is detected in images at 70, 160, 250, 350, and 500 μm; 49 Cet is significantly extended in the 70 μm image, spatially resolving the outer dust disk for the first time. Spectra covering small wavelength ranges centered on eight atomic and molecular emission lines were obtained, including [OI] 63 μm and [CII] 158 μm. The CII line was detected at the 5σ level - the first detection of atomic emission from the disk. No other emission lines were seen, despite the fact that the OI line is the brightest one observed in Herschel protoplanetary disk spectra (Meeus et al. 2012; Dent et al. 2013). We present an estimate of the amount of circumstellar atomic gas implied by the CII emission. The new far-IR/sub-mm data fills in a large gap in the previous spectral energy distribution (SED) of 49 Cet. A simple model of the new SED confirms the two-component structure of the disk: warm inner dust and cold outer dust that produces most of the observed excess. Finally, we discuss preliminary thermochemical modeling of the 49 Cet gas/dust disk and our attempts to match several observational results simultaneously. Although we are not yet successful in doing so, our investigations shed light on the evolutionary status of the 49 Cet gas, which might not be primordial gas but rather secondary gas coming from comets.
description: 11 pages, 4 figures, accepted for publication in The Astrophysical Journal
Synthesis and Characterization of 40 wt % Ce0.9Pr0.1O2–δ–60 wt % NdxSr1−xFe0.9Cu0.1O3−δ Dual-Phase Membranes for Efficient Oxygen Separation
Creators: name: Chen, Guoxing
name: Zhao, Zhijun
name: Widenmeyer, Marc
name: Yan, Ruijuan
name: Wang, Ling
name: Feldhoff, Armin
name: Weidenkaff, Anke
Publisher: name: Basel : MDPI AG
Year: 2020
Subjects: subject: Carbon dioxide
subject: High temperature applications
subject: Oxygen
subject: Permeation
subject: Separation
subject: Dual phase membranes
subject: Dual-phase materials
subject: High temperature gas
subject: Membrane fabrication
subject: Oxygen-permeation flux
subject: Reducing atmosphere
subject: Separation process
subject: Synthesis and characterizations
subject: Oxygen permeable membranes
subject: CO2 tolerance
subject: Dual-phase membrane
subject: Long-term stability
subject: Oxygen separation
subject: Regenerative ability
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Dense, H2- and CO2-resistant, oxygen-permeable 40 wt % Ce0.9Pr0.1O2–δ–60 wt % NdxSr1−xFe0.9Cu0.1O3−δdual-phase membranes were prepared in a one-pot process. These Nd-containing dual-phase membranes have up to 60% lower material costs than many classically used dual-phase materials. The Ce0.9Pr0.1O2−δ–Nd0.5Sr0.5Fe0.9Cu0.1O3−δ sample demonstrates outstanding activity and a regenerative ability in the presence of different atmospheres, especially in a reducing atmosphere and pure CO2 atmosphere in comparison with all investigated samples. The oxygen permeation fluxes across a Ce0.9Pr0.1O2−δ–Nd0.5Sr0.5Fe0.9Cu0.1O3−δ membrane reached up to 1.02 mL min−1 cm−2 and 0.63 mL min−1 cm−2 under an air/He and air/CO2 gradient at T = 1223 K, respectively. In addition, a Ce0.9Pr0.1O2–δ–Nd0.5Sr0.5Fe0.9Cu0.1O3–δ membrane (0.65 mm thickness) shows excellent long-term self-healing stability for 125 h. The repeated membrane fabrication delivered oxygen permeation fluxes had a deviation of less than 5%. These results indicate that this highly renewable dual-phase membrane is a potential candidate for long lifetime, high temperature gas separation applications and coupled reaction–separation processes.
Happiness Reflected: A Community Poetry Project
Creators: Ebun Akomolafe, Amy Bacon, Belle D., Rebecca Graff-McRae, Alexandra Horrigan, Madalina Ingram, Siri Iris, Jerry Iwanus, Lucinda Johnston, Nandini Karunamuni, Katherine Koller, Jon Lai, Iris Lau, LG, Zyesa Lo, Lorelei Loveridge, Julie Claire Ma, Rick Mast, Tom Merklinger, Holly Munn, Madeleine Nattrass, Natasha Nunn, Gavin Palmer, Simran Panesar, Carmen Person, Michael Przystupa, Heather Ritz, Devin Smith, Madeline Smith-Ackerl, David Sulz, Rebekah van Bruggen, Courtney Wagner, University of Alberta Days of Action Committee
Publisher: name: University of Alberta Library
Year: 2023

Happiness Reflected: A Community Poetry Project is a chapbook collection of original poems that were submitted by University of Alberta community members as they explored perspectives and questions about their own happiness. Intentionally curated by Days of Action for International Day of Happiness 2023, it is a component of the Happiness Reflected community arts initiative which included displaying the poems on posters across all campus libraries from March 20-31, and a 4-episode Happiness Reflected podcast which reflected on what the poems in the collection can help us learn about happiness and how how we can cultivate meaningful happiness in our lives. The Happiness Reflected Community Poetry Project has been made possible through partnership with University of Alberta Library and the Sound Studies Institute.
⚘ "Ens intentionale" and "ens ut verum": Traveling with John Deely Beyond Non-Being ☀ Matthew Minerd
Creators: name: Minerd, Matthew
Publisher: name: Instituto de Estudos Filosóficos
Year: 2022
Subjects: Act
Being
History of Philosophy
Intentionality
John Deely
Metaphysics
Potency
Semiotics
Truth

description: Ascend... and embark on a journey of ages across physical and mental sights of one and the same being.

This event is part of the activities of the 2022 International Open Seminar on Semiotics: a Tribute to John Deely on the Fifth Anniversary of His Passing, cooperatively organized by the Institute for Philosophical Studies of the Faculty of Arts and Humanities of the University of Coimbra, the Lyceum Institute, the Deely Project, Saint Vincent College, the Iranian Society for Phenomenology at the Iranian Political Science Association, the International Association for Semiotics of Space and Time, the Institute for Scientific Information on Social Sciences of the Russian Academy of Sciences, the Semiotic Society of America, the American Maritain Association, the International Association for Semiotic Studies, the International Society for Biosemiotic Studies, the International Center for Semiotics and Intercultural Dialogue, Moscow State Academic University for the Humanities and the Mansarda Acesa with the support of the FCT - Foundation for Science and Technology, I.P., of the Ministry of Science, Technology and Higher Education of the Government of Portugal under the UID/FIL/00010/2020 project.

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A Ruthenian Catholic, husband, and father, Matthew K. Minerd is a professor of philosophy and moral theology at Ss. Cyril and Methodius Byzantine Catholic Seminary in Pittsburgh, PA. His academic work has appeared in the journals Nova et Vetera, The American Catholic Philosophical Quarterly, Saint Anselm Journal, Lex Naturalis, Downside Review, The Review of Metaphysics, and Maritain Studies, as well in volumes published by the American Maritain Association through the Catholic University of America Press. He has served as author, translator, and/or editor for volumes published by The Catholic University of America Press, Emmaus Academic, Cluny Media, and Ascension Press.

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Homepage: https://www.uc.pt/fluc/uidief/act/io2s
Auditorium: https://www.uc.pt/fluc/uidief/act/io2s/auditorium

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The cover image for the video was designed by Zahra Soltani.