cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Enhancement of ultra-thin film emission using a waveguiding active layer
Creators: name: Aad, R.
name: Blaize, S.
name: Bruyant, A.
name: Couteau, C.
name: Lérondel, G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a theoretical study on the impact of an active optical layer on the emission properties of an ultrathin luminescent film. While the study can be generalized to any material, we focus here on a simple layered medium composed of a conjugated polymers (CPs) thin film, a zinc oxide layer (ZnO) and a sapphire substrate. The study spreads throughout variable aspects including the effect of the structure parameters on the CP luminescence and radiation pattern and more specifically the influence of the absorption and emission properties of the active layer. Comparing between the passive and active layer cases, the obtained results show that an enhancement of the CP luminescence of more than 20 times can be obtained by using an optically active underlying layer. The results can be explained in terms of photon recycling where the optically active layer acts as a photon reservoir and a secondary light source for the ultra thin film. This general concept is of a special interest for ultra-trace chemosensor.
Supersaturation in the boolean cube
Creators: name: Dove, Andrew P.
name: Griggs, Jerold R.
name: Kang, Ross J.
name: Séreni, Jean-Sébastíen
Publisher: name: Zenodo
Year: 2014

description: We seek families of subsets of an n-set of given size that contain the fewest k-chains. We prove a "supersaturation-type" extension of both Sperner's Theorem (1928) and its generalization by Erd˝os (1945). Erd˝os showed that a largest k-chain free family in the Boolean lattice is formed by taking all subsets of the (k1) middle sizes. Our result implies that by taking this family together with x subsets of the k-th middle size, we obtain a family with the minimum number of k-chains, over all families of this size. We prove our result using the symmetric chain decomposition method of de Bruijn, van Ebbenhorst Tengbergen, and Kruyswijk (1951)
Influence of the Gap Width on the Geometry of the Welded Joint in Hybrid Laser-Arc Welding
Creators: name: Turichin, G.
name: Tsibulskiy, I.
name: Kuznetsov, M.
name: Akhmetov, A.
name: Mildebrath, Maximilian
name: Hassel, Thomas
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: gap influence
subject: high strength steel
subject: Hybrid laser-arc welding
subject: mathematical model
subject: welded joint geometry
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The aim of this research was the experimental investigation of the influence of the gap width and speed of the welding wire on the changes of the geometry in the welded joint in the hybrid laser-arc welding of shipbuilding steel RS E36. The research was divided into three parts. First, in order to understand the influence of the gap width on the welded joint geometry, experimental research was done using continuous wave fiber laser IPG YLS-15000 with arc rectifier VDU-1500DC. The second part involved study of the geometry of the welded joint and hardness test results. Three macrosections from each welded joint were obtained. Influence of the gap width and welding wire speed on the welded joint geometry was researched in the three lines: in the right side of the plates, middle welded joint and in the root welded joint.
Estimation of Production Cost in an Early Design Stage of CFRP Lightweight Structures
Creators: name: Denkena, Berend
name: Horst, Peter
name: Schmidt, Carsten
name: Behr, Matthias
name: Krieglsteiner, Joscha
Publisher: name: Amsterdam : Elsevier BV
Year: 2017
Subjects: subject: Composite
subject: Design method
subject: Development
subject: Methodology
subject: Planning
subject: Production
subject: Composite materials
subject: Cost estimating
subject: Costs
subject: Fuselages
subject: Manufacture
subject: Production control
subject: Structural design
subject: Cost of productions
subject: Early design stages
subject: Preliminary structural design
subject: Production alternatives
subject: Production Planning
subject: Cost benefit analysis
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Development of composite structure which are both light and economically competitive is challenging. A new method for the development of CRFP lightweight structures implements a frequent interaction of design and production planning starting in an early design stage. As part of this, production alternatives need to be compared in terms of cost and impact on structural mass. This paper describes how a software module automatically determines suitable process chains based on a preliminary structural design. Cost of production is estimated using analytical process models dealing with imprecise design information. Applied to an aircraft fuselage panel, the method estimates cost and mass of different production alternatives. © 2017 The Authors. Published by Elsevier B.V.
Dynamic simulation and experimental validation of a two-phase closed thermosyphon for geothermal application
Creators: name: Ebeling, Johann-Christoph
name: Luo, Xing
name: Kabelac, Stephan
name: Luckmann, Sebastian
name: Kruse, Horst
Publisher: name: London : Academic Press Inc.
Year: 2017
Subjects: subject: Dynamic simulation
subject: Experimental validation
subject: Falling film evaporation
subject: Geothermal heat pump
subject: Geothermal thermosyphon
subject: Two-phase closed thermosyphon (TPCT)
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The heat transfer performance of a vertical two-phase closed thermosyphon (TPCT) used in a geothermal heat pump was experimentally investigated. The TPCT is a vertical plain steel pipe with inner diameter of 114 mm and bored 368 m deep underground. Carbon dioxide (CO2) is used as working fluid. In the TPCT there is no condensation section. CO2 is condensed by the evaporator of the heat pump, flows into the head of the TPCT and runs down as a falling film along the inner wall of the pipe. For the heat transfer simulation in the TPCT, a quasi-dynamic model in which the mass transfer between the liquid and vapor phases as well as the conduction heat transfer from the surrounding soil towards the pipe is treated dynamically. However the film flow modeling is based on the Nusselt theory of film condensation. The comparison of the experimental data with the numerical simulation is presented and discussed.
The real photon structure functions in massive parton model in NLO
Creators: name: Watanabe, Norihisa
name: Kiyo, Yuichiro
name: Sasaki, Ken
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the one-gluon-exchange ($αα_s$) corrections to the real photon structure functions $W_{TT} $, $W_{LT}$, $W_{TT}^{a} $ and $W_{TT}^τ$ in the massive parton model. We employ a technique based on the Cutkosky rules and the reduction of Feynman integrals to master integrals. We show that a positivity constraint, which is derived from the Cauchy-Schwarz inequality, is satisfied among the unpolarized and polarized structure functions $W_{TT}$, $W_{TT}^a$ and $W_{TT}^τ$ calculated up to the next-to-leading order in QCD.
description: arXiv admin note: text overlap with arXiv:1110.2625
Employee Qualification by Digital Learning Games
Creators: name: Görke, Matthias
name: Bellmann, Vivian
name: Busch, Jan
name: Nyhuis, Peter
Publisher: name: Amsterdam : Elsevier BV
Year: 2017
Subjects: subject: Digital Learning Games
subject: Lean Production
subject: Learning Factory
subject: Line Balancing
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Global competition and individual customer requirements generate challenges for manufacturing companies. To cope with these challenges, companies require an increased level of flexibility. In the first place, this flexibility has to be provided by the employees, as they are one of the key success factors for mastering change. An essential prerequisite for this is a high level of employee qualification across all areas of the company. The learning factories approach has garnered particular attention in recent years as a playful and efficient way of learning the principles and methods of processes improvement. The drawbacks of this method include the limited, non-holistic perspective of each trainee as well as the non-recurring knowledge transfer. Moreover, this kind of qualification requires the trainees to be in the same place at the same time. These downsides can be successfully countered by supplementing learning factories with a digital learning component depicting the learning environment, as digital learning will enable individual learning routes for all trainees and is accessible at all times and all places. This paper serves to outline the idea of serious learning by using digital learning games along with the attendant benefits. Over and beyond this, it also presents a digital learning game for teaching specific lean production methods. © 2017 The Authors
Grinding with patterned grinding wheels
Creators: name: Denkena, Berend
name: Grove, T.
name: Göttsching, Tim
Publisher: name: London : Elsevier Ltd.
Year: 2015
Subjects: subject: Coolant flow
subject: Fly-cutting
subject: Grinding
subject: Patterning
subject: Coolants
subject: Grinding wheels
subject: Thermal load
subject: Wheels
subject: Cutting kinematics
subject: Grinding performance
subject: Manufacturing process
subject: Patterning methods
subject: Process forces
subject: Structuring process
subject: Grinding (machining)
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Grinding is one of the most important manufacturing processes, especially when high surface qualities have to be realized or if hard or brittle materials have to be machined. Often the grinding performance is limited by workpiece failure due to a high thermal load in the contact zone. Therefore structured or patterned grinding wheels are frequently used to reduce the thermal load in the contact zone. In this paper a new patterning method will be introduced by using a fly-cutting kinematic for the structuring process. In face grinding experiments the patterned grinding wheels showed great potential to enhance the overall grinding performance by significantly decreasing process forces and grinding burn. The reduction of the thermal load in the contact zone can be explained by an improved coolant flow through the contact zone, which was measured with a specially designed coolant collecting bin.
title: Audit des pratiques d’hygiène autour de la réalisation d’échographies endovaginales en gynécologie-obstétrique
Creators: name: Berthelot, Philippe
Publisher: name: Health & Co
Year: 2018

description: Introduction. La désinfection des sondes d’échographies endovaginales (SEV) a fait l’objet d’études récentes questionnant sur le risque de transmission nosocomiale de micro-organismes et sur les modalités de désinfection du matériel. Nous présentons les résultats d’un audit sur deux périodes des pratiques d’hygiène autour de la réalisation d’échographies endovaginales (EEV) en gynécologie-obstétrique au sein du centre hospitalier universitaire de Saint-Étienne. Matériel et méthodes. Une grille d’audit chronologique a permis d’analyser les pratiques à partir des référentiels français, et de comparer douze critères concernant la désinfection des SEV entre les deux périodes sur les secteurs de procréation médicalement assistée (PMA), urgences et consultations. Plusieurs informations ont été dispensées entre ces deux tours d’audit. Résultats. Lors du second tour d’audit, il y a eu des améliorations statistiquement significatives concernant : l’hygiène des mains après EEV, la conformité de la désinfection du matériel, le retrait du gel avant passage de la lingette, et la conformité du retrait de la gaine de protection. En revanche, il n’y a pas eu de changement des pratiques concernant : l’hygiène des mains avant EEV, l’usage des gants, l’évaluation globale de l’hygiène des mains, et la mise en place du gel sans contact avec la sonde. L’audit de structure a montré une conformité du matériel utilisé. Conclusion. Malgré la persistance de difficultés à appliquer strictement les mesures d’hygiène liées aux EEV, notamment dans le cadre de la PMA et des urgences, cet audit a montré une amélioration significative du suivi des recommandations, concernant notamment l’hygiène des mains et la conformité du retrait de la gaine.
Sign-Error Adaptive Filtering Algorithms for Markovian Parameters
Creators: name: Hashemi, Araz
name: Yin, G.
name: Wang, Le Yi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optimization and Control (math.OC)
subject: Probability (math.PR)
subject: FOS: Mathematics

description: Motivated by reduction of computational complexity, this work develops sign-error adaptive filtering algorithms for estimating time-varying system parameters. Different from the previous work on sign-error algorithms, the parameters are time-varying and their dynamics are modeled by a discrete-time Markov chain. A distinctive feature of the algorithms is the multi-time-scale framework for characterizing parameter varia- tions and algorithm updating speeds. This is realized by considering the stepsize of the estimation algorithms and a scaling parameter that defines the transition rates of the Markov jump process. Depending on the relative time scales of these two pro- cesses, suitably scaled sequences of the estimates are shown to converge to either an ordinary differential equation, or a set of ordinary differential equations modulated by random switching, or a stochastic differential equation, or stochastic differential equa- tions with random switching. Using weak convergence methods, convergence and rates of convergence of the algorithms are obtained for all these cases.
description: Preprint, submitted to IEEE Transactions on Signal Processing, 26 pages, 5 figures
Onosma vaudensis Breistr. 1942, s. str.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: O. vaudensis Gremli 1874 em. Breistr. 1942 (O. fastigiata [Braun-Blanquet] Lacaita 1924 em. Stroh 1939) ssp. vaudensis (Gremli) Breistr. 1942 (O. vaudensis Gremli s. str., O. helvetica Boissier var. vaudensis Borbäs, O. echioides L. ssp. vaudensis Braun-Blanquet, O. fast. ssp. vaudensis Stroh, 0. helv. ssp. vaudensis Breistr. 1947) Cat. 264. Ausser den im Cat. erwähnten Fundstellen (zwischen Bramois und Nax sowie Pfynwald) angegeben von folgenden Orten: 2:Unter Tassonnieres (beiFully) (nachBraun-Blanquet); Siders (Kiener in herb. Univ. Zürich; ist möglicherweise Pfynwald,also3). -3: Prajean (Pannatier) und Evolene (nach Braun-Blanquet) im Val d'Herens; bei Planche (Val d'Anniviers), gegen 1400 m (Arbenz 1941); zwischen Brig und Ganter (R. Chodat).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Weak and Extended H2 Emission in NGC 6369
Creators: name: Ramos-Larios, Gerardo
name: Guerrero, Martin A.
name: Vazquez, Roberto
name: Phillips, John. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: NGC 6369 is a double-shell PN with a filamentary outer shell or envelope and faint bipolar extensions. We have used ground- and space-based narrowband optical and near-IR images, broadband mid-IR images, optical long-slit echelle spectra, and mid-IR spectra to investigate its physical structure. The observations confirm a bipolar structure for the inner shell of NGC 6369, but they also reveal evidence for H2 and strong polycyclic aromatic hydrocarbons (PAHs) emission from a photo-dissociation region (PDR) with molecular inclusions located outside the bright inner shell.
description: Published in the proceedings of the IAU Symp. 283: Planetary Nebulae: An Eye to the Future 2 pages, 2 figures
Investigations of ductile damage in DP600 and DC04 deep drawing steel sheets during punching
Creators: name: Isik, Kerim
name: Gerstein, Gregory
name: Gutknecht, Florian
name: Clausmeyer, Till
name: Nuernberger, Florian
name: Maier, Hans Jürgen
name: Tekkaya, A. Erman
Publisher: name: Amsterdam : Elsevier Science Bv
Year: 2016
Subjects: subject: punching
subject: gurson model
subject: dual phase steel
subject: mild steel
subject: shear fracture
subject: sem
subject: simulation
subject: fracture
subject: model
subject: mechanics
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::624 | Ingenieurbau und Umwelttechnik

description: The paper presents numerical and microstructural investigations on a punching process of 2 mm thick steel sheets. The dual phase steel DP600 and the mild steel DC04 exhibit different damage and fracture characteristics. To distinguish the void development and crack initiation for both materials, interrupted tests at varied punch displacements are analyzed. The void volume fractions in the shearing zone are identified by scanning electron microscopy (SEM). The Gurson model family, which is recently extended for shear fracture, is utilized to model the elastoplastic behavior with ductile damage. The effect of the shear governing void growth parameter, introduced by Nahshon and Hutchinson (2008), is discussed.
Numerical and experimental investigations of the anisotropic transformation strains during martensitic transformation in a low alloy Cr-Mo steel 42CrMo4
Creators: name: Behrens, Bernd-Arno
name: Bouguecha, Anas
name: Bonk, Christian
name: Chugreev, Alexander
Publisher: name: Amsterdam : Elsevier
Year: 2017
Subjects: subject: 42CrMo4
subject: finite element analysis
subject: multiscale material modelling
subject: transformation induced plasticity
subject: Alloy steel
subject: Anisotropy
subject: Binary alloys
subject: Chromium alloys
subject: Finite element method
subject: Linear transformations
subject: Martensitic steel
subject: Mathematical transformations
subject: Molybdenum
subject: Molybdenum alloys
subject: Plasticity
subject: Strain
subject: Anisotropic transformation strains
subject: Coupled thermo-mechanical
subject: Experimental investigations
subject: Low alloy cr mo steels
subject: Material modelling
subject: Transformation induced plasticity
subject: Transformation-Induced
subject: Martensitic transformations
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Hot forming as a coupled thermo-mechanical process comprises of numerous material phenomena with a corresponding impact on the material behavior during and after the forming process. Within the subsequent heat treatment, possible rapid cooling of the hot formed parts leads to the diffusionless decomposition of austenite into martensite. In this context, in addition to the elastic, plastic and linear thermal strain components, complex isotropic as well as anisotropic transformation strains can occur. Irreversible anisotropic transformation strains account for the plastic deformation at the phase boundary between the emerging and the parent phase and are related to the transformation induced plasticity (TRIP or TP) phenomena. Moreover, TRIP strains can be reduced or amplified by varying the current stress state. These phenomena significantly contribute to the final residual stress state and may be responsible for the cost-intensive component defects arising due to thermal shrinkage. This study aims at developing an FE-based material model in order to describe and quantitatively visualize stress dependence of the transformation induced anisotropic strains for a typical forging steel 42CrMo4. The developed material model as well as the aspects of its implementation in a commercial FE-system (Simufact.forming) is presented. Consequently, the discussed material model is tested by comparison of experimental and numerical results with respect to resulting dilatation under various stress states.
Herodotzitate in Plutarchs De malignitate Herodoti aus eAQUA
Creators: name: Willkommen, Corinna
Publisher: name: Working Papers Contested Order/ eAQUA Working Papers
Year: 2014

description: Working Papers Contested Order/ eAQUA Working Papers, Bd. 7 (2012): Working Papers Contested Order: Das Portal eAQUA – Neue Methoden in der geisteswissenschaftlichen Forschung III
SMARCA4/2 loss inhibits chemotherapy-induced apoptosis by restricting IP3R3-mediated Ca 2+ flux to mitochondria
Creators: name: Xue, Yibo
name: Morris, Jordan L.
name: Yang, Kangning
name: Fu, Zheng
name: Zhu, Xianbing
name: Johnson, Fraser
name: Meehan, Brian
name: Witkowski, Leora
name: Yasmeen, Amber
name: Golenar, Tunde
name: Coatham, Mackenzie
name: Morin, Geneviève
name: Monast, Anie
name: Pilon, Virginie
name: Fiset, Pierre Olivier
name: Jung, Sungmi
name: Gonzalez, Anne V.
name: Camilleri-Broet, Sophie
name: Fu, Lili
name: Postovit, Lynne-Marie
name: Spicer, Jonathan
name: Gotlieb, Walter H.
name: Guiot, Marie-Christine
name: Rak, Janusz
name: Park, Morag
name: Lockwood, William
name: Foulkes, William D.
name: Prudent, Julien
name: Huang, Sidong
Publisher: name: Apollo - University of Cambridge Repository
Year: 2021
Subjects: Article
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/631/67/1059/2326
/631/67/1244
/631/80/82/23
/13/106
/13/89
/13/95
/13/44
/13/51
/13/31
/13/2
/14/19
/38/15
/38/39
/49/47
/82/80
article

description: Acknowledgements: The authors thank A. Leary for sharing RNA-seq data and R. Hass for sharing the SCCOHT-1 cells. The authors thank members of the Pelletier Laboratory for assistance with flow cytometry studies. This work was supported by Canadian Institutes of Health Research (CIHR) grants MOP-130540, PJT-156233, and PJT-438303 to S.H. and grant FDN-148390 to W.D.F. and a core grant from Medical Research Council (MRC) MC_UU_00015/7 to J.P. Author Y.X. was supported by CIHR Fellowship (MFE-171249), J.L.M. was supported by a MRC-funded graduate student fellowship, and S.H. was supported by a CRC Chair in Functional Genomics.
description: Inactivating mutations in SMARCA4 and concurrent epigenetic silencing of SMARCA2 characterize subsets of ovarian and lung cancers. Concomitant loss of these key subunits of SWI/SNF chromatin remodeling complexes in both cancers is associated with chemotherapy resistance and poor prognosis. Here, we discover that SMARCA4/2 loss inhibits chemotherapy-induced apoptosis through disrupting intracellular organelle calcium ion (Ca2+) release in these cancers. By restricting chromatin accessibility to ITPR3, encoding Ca2+ channel IP3R3, SMARCA4/2 deficiency causes reduced IP3R3 expression leading to impaired Ca2+ transfer from the endoplasmic reticulum to mitochondria required for apoptosis induction. Reactivation of SMARCA2 by a histone deacetylase inhibitor rescues IP3R3 expression and enhances cisplatin response in SMARCA4/2-deficient cancer cells both in vitro and in vivo. Our findings elucidate the contribution of SMARCA4/2 to Ca2+-dependent apoptosis induction, which may be exploited to enhance chemotherapy response in SMARCA4/2-deficient cancers.
Estimation of load history by residual stress relaxation
Creators: name: Breidenstein, Bernd
name: Denkena, Berend
name: Mörke, Tobias
name: Hockauf, R.
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: Fatigue
subject: Residual stress
subject: Surface integrity
subject: Fatigue of materials
subject: Residual stresses
subject: Stress relaxation
subject: Stresses
subject: Condition based maintenance
subject: Load information
subject: Residual stress state
subject: Resource efficiencies
subject: Service intervals
subject: Subsurface properties
subject: Thermal and mechanical loads
subject: Life cycle
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Focusing on the impact of machining on structural integrity and fatigue life of components the surface and subsurface properties are of major importance. It is well known that machining induced residual stresses have a significant influence on the fatigue life of a component. Due to thermal and mechanical loads during a product's life cycle these stresses relax, which is undesired in most cases. The presented approach utilizes relaxations due to mechanical load to estimate the load history of a component. It is intended to qualify residual stress relaxation as a load sensor and to determine the limits of this approach. Therefore, it is demonstrated, how the residual stress state induced by turning of AISI 1060 determines the critical load causing relaxation. Subsequently, the influence of load stress and the number of load cycles is used to build up a model. The presented approach accesses load information from mass production components. Until now, this information is typically limited to prototypical developments or high price parts equipped with external sensors. One application of life cycle data is condition-based maintenance. This technology allows to extend service intervals and prevent a premature replacement of undamaged components. Thus, cost and resource efficiency are augmented. It is demonstrated that based on the changes of residual stress, possible mechanical loads and number of load cycle combinations can be identified. The changes are used to estimate the experienced loads.
Supplementary materials for: Use and detection of a vitamin B1 degradation product yields new views of the marine B1 cycle and plankton metabolite exchange
Creators: name: Paerl, Ryan
Publisher: name: Zenodo
Year: 2023
Subjects: Thiamine
Vitamin
marine microbiology
Phytoplankton
Bacterioplankton

description: Vitamin B1 (thiamin) is a vital nutrient for most cells in nature including marine plankton. Early and recent experiments show that B1 degradation products instead of B1 can support the growth of marine bacterioplankton and phytoplankton. However, the use and occurrence of some degradation products remain uninvestigated – namely N-formyl-4-amino-5-aminomethyl-2-methylpyrimidine (FAMP) – which has been a focus of plant oxidative stress research. We investigated the relevance of FAMP in the ocean. Experiments and global ocean meta-omic data indicate that eukaryotic phytoplankton, including picoeukaryotes and harmful algal bloom species, use FAMP while bacterioplankton appear more likely to use deformylated FAMP, 4-amino-5-aminomethyl-2-methylpyrimidine (AmMP). Measurements of FAMP in seawater and biomass revealed that it occurs at picomolar concentrations in the surface ocean, heterotrophic bacterial cultures produce FAMP in the dark – indicating non-photodegradation of B1 by cells, and B1-requiring (auxotrophic) picoeukaryotic phytoplankton produce intracellular FAMP. Our results require an expansion of thinking about vitamin degradation in the sea, but also the marine B1 cycle – where it is now crucial to consider a new B1-related compound pool (FAMP) – as well as generation (dark degradation – likely via oxidation), turnover (plankton uptake), and exchange of the compound within networks of plankton.
description: Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2049388
Grinding of riblets with "beaver tooth" multi-layer tools
Creators: name: Hockauf, Rolf
name: Asadi, Esmail
name: Denkena, Berend
name: Grove, Thilo
name: Wurz, Marc Christopher
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: micro machining
subject: multi-layer tool
subject: riblet
subject: Abrasives
subject: Machinery
subject: Micromachining
subject: Compressor blades
subject: Grinding parameters
subject: Grinding process
subject: Manufacturing process
subject: Milling operation
subject: Optimal parameter settings
subject: Polyimide layers
subject: Grinding (machining)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: To reduce friction in turbo machinery components, riblets are induced on compressor blades or pump impellers. Here, the grinding process enables a higher productivity in machining of riblet structures compared to knurling, laser or milling operations. Usually, profiled grinding tools are used to create such structures inspired by sharkskin. Unfortunately, conventional grinding tools have to be dressed continuously to keep the desired profile in the circumferential surface. To avoid the time-consuming dressing process and to enable a self-sharpening effect, an innovative multi-layer tool concept is developed. The tool consists of two types of thin polyimide layers. The first type contains abrasives and the second is a support layer without abrasives. These layers are piled alternately in a special manufacturing process and act like a monolithic tool in grinding process. The aim of the investigations presented in this paper is to find an optimal parameter setting to produce riblet structures productively by using the self-sharpening effect. The optimal setting allows a grinding process without any dressing process by using a large part of the grinding tool volume. At first, the manufacturing process is focused to create clearly divided support and abrasive layers of the grinding tool. Furthermore, the investigation shows the relationship between grinding parameters and the setback of the supporting layer in the middle of the tool. This setback is important for the creation of riblet structures in the surface of AISI 420 workpieces.
Kommentierter Katalog zu den Kleinfunden (ohne Münzen) von der Halbinsel Schwaben in Altenburg, Gemeinde Jestetten, Krs. Waldshut
Creators: name: Lauber, Johannes
Publisher: name: Fundberichte aus Baden-Württemberg
Year: 2016

description: [nicht vorhanden / not available]
description: Fundberichte aus Baden-Württemberg, Bd. 32, Nr. 1 (2012): Fundberichte aus Baden-Württemberg
Cauchy Problem for a Darboux Integrable Wave Map System and Equations of Lie Type
Creators: name: Vassiliou, Peter J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: The Cauchy problem for harmonic maps from Minkowski space with its standard flat metric to a certain non-constant curvature Lorentzian 2-metric is studied. The target manifold is distinguished by the fact that the Euler-Lagrange equation for the energy functional is Darboux integrable. The time evolution of the Cauchy data is reduced to an ordinary differential equation of Lie type associated to SL(2) acting on a manifold of dimension 4. This is further reduced to the simplest Lie system: the Riccati equation. Lie reduction permits explicit representation formulas for various initial value problems. Additionally, a concise (hyperbolic) Weierstrass-type representation formula is derived. Finally, a number of open problems are framed.
description: arXiv admin note: substantial text overlap with arXiv:1303.0087
Conflict management on the streets in the fourteenth century : a case study of Bologna in context
Creators: name: Fassler, Guy
Publisher: name: The University of St Andrews
Year: 2023
Subjects: subject: Bologna
subject: Conflict management
subject: Streets
subject: Resistance
subject: Solidarity
subject: Pistoia
subject: Privileges
subject: Fango
subject: DG975.B61F2
subject: Conflict management--Italy--Bologna--History--To1500
subject: Law--Italy--Bologna--History
subject: Criminal justice, Administration of--Political aspects--Italy--Bologna--History
subject: Bologna (Italy)--History--To 1506
subject: Bologna (Italy)--Politics and government
subject: Bologna (Italy)--Social life and customs

description: This thesis examines conflict management on the streets in early fourteenth century Bologna with brief comparative reference to other Italian communes, Pistoia in particular. It asks how small-scale conflicts were managed in the medieval city – both between authorities and neighbours and between neighbours and their peers – and identifies the social and legal mechanisms which governed these interactions. It builds on previous scholarship on medieval legal systems and conflict (Blanshei, Milani, Vallerani, Lantschner, et al.) but focuses on administrative and social aspects of non- violent conflicts. The thesis follows the surveillance efforts of communal officials, how they were met by inhabitants, and how the communal surveillance apparatus built around the gaze was utilised by neighbours against each other in local conflicts. Cooperation, resistance, and solidarities are therefore recurring themes. The thesis offers qualitative and quantitative analyses of the records from the Bolognese fango office as well as urban legislation in the form of statutes and in response to petitions recorded in the registers of provvisioni from Pistoia. The picture that emerges from this study is that of a highly complex, dynamic, and intricate system of managing, resolving, or escalating small-scale conflicts. It shows the importance of social and political connections to navigating through the legal and social system that governed the medieval commune. The final chapter of this thesis also draws some parallels between the principles demonstrated in the material from Bologna and that of Pistoia as well as other Italian communes.
Security of Decoy-State Protocols for General Photon-Number-Splitting Attacks
Creators: name: Somma, Rolando D.
name: Hughes, Richard J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Decoy-state protocols provide a way to defeat photon-number splitting attacks in quantum cryptography implemented with weak coherent pulses. We point out that previous security analyses of such protocols relied on assumptions about eavesdropping attacks that considered treating each pulse equally and independently. We give an example to demonstrate that, without such assumptions, the security parameters of previous decoy-state implementations could be worse than the ones claimed. Next we consider more general photon-number splitting attacks, which correlate different pulses, and give an estimation procedure for the number of single photon signals with rigorous security statements. The impact of our result is that previous analyses of the number of times a decoy-state quantum cryptographic system can be reused before it makes a weak key must be revised.
description: 9 pages and 4 figures
Forming and Joining of Carbon-Fiber-Reinforced Thermoplastics and Sheet Metal in One Step
Creators: name: Behrens, Bernd-Arno
name: Hübner, Sven
name: Grbic, Nenad
name: Micke-Camuz, Moritz
name: Wehrhane, Tim
name: Neumann, André
Publisher: name: London : Elsevier Ltd.
Year: 2017
Subjects: subject: Fiber-Reinforced Thermoplastics
subject: Metal
subject: Variotherm Forming
subject: Carbon
subject: Drawing (forming)
subject: Impregnation
subject: Joining
subject: Metals
subject: Reinforced plastics
subject: Reinforcement
subject: Steel research
subject: Thermoplastics
subject: Carbon fiber reinforced
subject: Component properties
subject: Fiber reinforced plastic(FRP)
subject: Fiber reinforced thermoplastics
subject: Geometrical deviations
subject: Impregnation quality
subject: Industrial production
subject: Large-scale applications
subject: Sheet metal
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The processing and component properties of metals have led to their worldwide success in mechanical engineering. Their advantages are high ductility, efficient production methods, good joining ability and nearly isotropic mechanical properties. Fiber-reinforced plastics (FRP) are known for an excellent lightweight design potential, due to low density as well as high and anisotropic tensile stiffness. By using thermoplastics instead of thermoset matrices, processing times and therefore component costs have already been reduced significantly and thus have become affordable in large-scale application. If the advantages of both, metal and FRP, are intelligently combined, a part with tailored properties is created. However, suitable forming processes, which take the different forming effects of both materials into account, have to be developed yet. The scope of this research was to enable the combined forming, joining and impregnation of pre-impregnated FRP-sheets and sheet metal to steel-CFRP-steel-sandwich-parts in one process step. As forming and joining must be executed at temperatures above the melting point of the thermoplastic while the part removal must take place beneath this temperature, a heating concept for drawing tools was developed to enable short production cycles. In order to ensure an economic industrial production a fast heating and cooling of the tool is essential. Afterwards optimal impregnation and joining process parameters for short cycle times were determined with planar samplings. The influence of the process parameters on part quality was investigated microscopically. Based on this research, a forming tool was constructed and hat profiles of steel-FRP-steel sandwiches were drawn successfully. Subsequently, the impregnation quality was investigated based on the process parameter tool temperature. Furthermore, the geometrical deviation of formed hat profiles was investigated. © 2017 The Authors.
Mobile Automated Diagnostics of Stress State and Residual Life Prediction for a Component under Intensive Random Dynamic Loads
Creators: name: Mozgova, Iryna
name: Yanchevskyi, Ihor
name: Gerasymenko, Mykola
name: Lachmayer, Roland
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Component Stress State
subject: Dynamic Loads
subject: Industry 4.0 Product
subject: Mobile Measuring Device
subject: Residual Life
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: This article presents an approach developed for collecting and processing data about the actual stress state of a structural component of a technical product and to estimate its residual fatigue life in case random dynamic loadings. As input data sensor values are being used from which the operating loads acting on a component are calculated. For the realization of the experiments a suitable mobile measuring device has been developed. The device is designed to digitize sensor signals at certain positions identified by simulation results, to collect this data in an internal memory, to mathematically analyze this data in real time, to process this data in parallel for the purpose of identifying characteristic information, to restore the stress state of the component and to estimate the residual fatigue life. The created concept provides an opportunity to realize the "intellectualization" of structural components without radical changes in their construction and allows supplementing components with additional functions for collecting and analyzing data during the usage phase of the components life cycle, what is an integral part of an Industry 4.0 product.
Experimental Distillation of Quantum Nonlocality
Creators: name: Zu, C
name: Deng, D. -L.
name: Hou, P. -Y.
name: Chang, X. -Y.
name: Wang, F.
name: Duan, L. -M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report the first experimental demonstration of distillation of quantum nonlocality, confirming the recent theoretical protocol [\textit{Phys. Rev. Lett. 102, 120401 (2009)}]. Quantum nonlocality is described by a correlation box with binary inputs and outputs, and the nonlocal boxes are realized through appropriate measurements on polarization entangled photon pairs. We demonstrate that nonlocality is amplified by connecting two nonlocal boxes into a composite one through local operations and four-photon coincidence measurements.
What if We Knew What the Future Brings? Optimal Investment for a Frontrunner with Price Impact
Creators: name: Bank, Peter
name: Dolinsky, Yan
name: Rásonyi, Miklós
Publisher: name: Springer Science and Business Media LLC
Year: 2022
Subjects: subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik
subject: Gaussian Volterra integral equation
subject: inside information
subject: price impact
subject: exponential utility
subject: optimal investment

description: In this paper we study optimal investment when the investor can peek some time units into the future, but cannot fully take advantage of this knowledge because of quadratic transaction costs. In the Bachelier setting with exponential utility, we give an explicit solution to this control problem with intrinsically infinite-dimensional memory. This is made possible by solving the dual problem where we make use of the theory of Gaussian Volterra integral equations.
Energy consumption analysis of modules for CPS retrofitting
Creators: name: Rehe, M.
name: Denkena, Berend
name: Wagener, C.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: energy harvesting
subject: equipment effectiveness
subject: indicator calculation
subject: process planning
subject: wireless sensor sets
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Modern production environments require transparency regarding production status to detect the optimization potential. One of the indicators to identify this potential is the Overall Equipment Effectiveness (OEE). It is usually calculated by hand. In cyber physical production systems and an implemented Total Productive Maintenance (TPM), a permanent analysis of the optimization potential is required. This approach faces the challenges of manual efforts to gather machine data. To get a flexible sensor set, methods of energy supply and wireless radio modules are analysed. The article shows the possibilities of energy consumption to fulfil the requirements of energy harvesting.
Some Generalization of Hadamard's type Inequalities through Differentiability for s-Convex Function and their Applications
Creators: name: Muddassar, Muhammad
name: Bhatti, Muhammad Iqbal
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26D15, 26A51, 39A10

description: In this paper, a general form of integral inequalities of Hermite-Hadamard's type through differentiability for s-Convex function in second sense and whose all derivatives are absolutely continuous are established. The generalized integral inequalities contributes some better estimates than some already presented. The inequalities are then applied to numerical integration and some special means.
description: N/A
Geum reptans L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. reptans L. Cat. 294. Var. genuina Ducommun - Verbreitet. Var. alpina (Vill.) Koch (var. alpestris Gremli) -Keine neueren Beobachtungen.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
title: Beyond Ecological Crisis: Niklas Luhmann’s Theory of Social Systems
Creators: name: Bergthaller, Hannes
Publisher: name: Electronic Book Review
Year: 2018

description: Bergthaller's essay originally appeared in the collection, Ecological Thought in Germany. It is reprinted here, with permissions from Lexington Books, as part of an ebr gathering-in-process on Natural Media (to be released in the summer of 2018).
Residual stresses in grinding of forming tools with toric grinding pins
Creators: name: Grove, Thilo
name: Lucas, Henning
name: Denkena, Berend
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: grinding
subject: residual stresses
subject: toric tools
subject: Machine tools
subject: Metal forming
subject: Residual stresses
subject: Sheet metal
subject: Constant contact
subject: Cutting simulation
subject: Empirical model
subject: Free-form surface
subject: Quantitative correlation
subject: Residual stress state
subject: Sheet-Bulk Metal Forming
subject: Tool parameter
subject: Grinding (machining)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: The subsurface residual stress state of forming tools is an important factor for the lifetime of these tools. This is especially important for tools used in processes like sheet-bulk metal forming, where very high process loads occur in the tools during the forming operation. Grinding as one of the last process steps for manufacturing of these tools significantly affects the subsurface residual stress state. For five-axis grinding, toric tools are advantageous, because constant contact conditions are realized even on complex free form surfaces. Previous work identified the major process and tool parameters for influencing the residual stress state due to grinding with toric grinding pins. This paper investigates the quantitative correlations between the main parametersfeed rate and cutting grain size and the resulting residual stresses in a full factorial experimental design for the lateral grinding strategy. An empirical model is determined from the results of the experiments, which allows to predict these residual stresses for toric pin grinding. Additional grinding force measurements and cutting simulations are conducted to gain additional insight in the generation of residual stresses through grinding with toric pins.
Hybrid Spindle - An approach for a milling machine tool spindle with extended working range for HSC and HPC
Creators: name: Denkena, Berend
name: Bergmann, Benjamin
name: Mücke, Markus
name: Königsberg, J.
name: Ponick, Bernd
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Hybride spindle
subject: Machine tool
subject: Milling
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Commercial motor-driven spindles for milling machine tools are generally developed for specific machining operations, such as HPC (High Performance Cutting) or HSC (High Speed Cutting). HPC and HSC require significantly different working ranges regarding spindle speed and torque. E.g. in HPC operations, high torque at low spindle speeds is needed. The two working ranges are covered only limited by a conventional spindle so far. However, a spindle system that can switch the working range allows cost-effective manufacturing of a wider range of materials within the same machine tool. The spindle bearings and the power electronics supply are challenges, when switching between both working ranges. HPC operation requires high bearing stiffness in order to transmit high forces occurring during the cutting process. However, the associated high bearing preload leads to high frictional losses at high speeds for HSC operations. Furthermore, the wide operating range generates contrary requirements for the motor winding. To increase the spindle speeds with a winding being assembled for high torques, the current has to be increased. For this purpose, expensive and non-standardized motor inverters are required. This paper introduces a concept to overcome these challenges. Firstly, an approach to adjust the bearing preload is presented, using a compact, electrically controlled bearing preload element, which is suitable for industrial applications. Next, an approach for a reconfigurable winding design of the spindle motor is shown. This allows electrical switching between the working ranges using conventional motor inverters. Finally, an analysis of the conditions of use of the hybrid spindles is presented.