cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Iterative Cellular Screening System for Nanoparticle Safety Testing
Creators: name: Sambale, Franziska
name: Stahl, Frank
name: Rüdinger, Ferdinand
name: Seliktar, Dror
name: Kasper, Cornelia
name: Bahnemann, Detlef W.
name: Scheper, Thomas
Publisher: name: New York : Hindawi Publishing Corporation
Year: 2015
Subjects: subject: titanium-dioxide nanoparticles
subject: in-vitro
subject: oxidative stress
subject: zinc-oxide
subject: epithelial-cells
subject: toxicity
subject: cytotoxicity
subject: expression
subject: culture
subject: model
subject: Titandioxid
subject: Nanopartikel
subject: Titandioxid Nanopartikel
subject: In vitro
subject: Oxidativer Stress
subject: Zinkoxid
subject: Epithelzelle
subject: Toxizität
subject: Zytotoxizität
subject: Titandioxid
subject: Nanopartikel
subject: Oxidativer Stress
subject: In vitro
subject: Zinkoxid
subject: Epithelzelle
subject: Toxizität
subject: Cytotoxizität
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: Nanoparticles have the potential to exhibit risks to human beings and to the environment; due to the wide applications of nanoproducts, extensive risk management must not be neglected. Therefore, we have constructed a cell-based, iterative screening system to examine a variety of nanoproducts concerning their toxicity during development. The sensitivity and application of various cell-based methods were discussed and proven by applying the screening to two different nanoparticles: zinc oxide and titanium dioxide nanoparticles. They were used as benchmarks to set up our methods and to examine their effects on mammalian cell lines. Different biological processes such as cell viability, gene expression of interleukin-8 and heat shock protein 70, as well as morphology changes were investigated. Within our screening system, both nanoparticle suspensions and coatings can be tested. Electric cell impedance measurements revealed to be a good method for online monitoring of cellular behavior. The implementation of three-dimensional cell culture is essential to better mimic in vivo conditions. In conclusion, our screening system is highly efficient, cost minimizing, and reduces the need for animal studies.
Supply Shocks in Global Value Chains and Export Performance: Evidence from Bangladesh Using Triple Difference-in-Differences
Creators: name: Miah, Mohammad Rayhan
name: Ichihashi, Masaru
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: In this paper, we evaluate how supply shocks in global value chains, such as the lockdown in China during the coronavirus pandemic, affected firm-product-level export performance in Bangladesh, which is a least-developed country where domestic inputs are inadequate due to capacity constraints. Transaction-level customs data on the universe of Bangladeshi apparel manufacturing firms are used in the analysis. We apply a triple difference-in-differences approach to compare the woven apparel exports of the firms that relied on China for inputs before and after the lockdown with those of knit apparel and firms that depended on the rest of the world as a comparison group. The results show that firms exposed to the Chinese input supply shock experienced a 36.5% decline in woven apparel exports after the lockdown. A plausible explanation for the decline in exports is the reduced shipment size driven by the constrained production capacity due to the shortage of inputs from China. We also find that exposed firms whose exports were highly concentrated in the European Union and the United States incurred an additional 18% decline compared to other firms.
Botrychium lanceolatum With.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. lanceolatum With. (A. Plantago-aquatica ssp. stenophyllum [A. et G.] Holmberg, A. stenophyllum Samuelsson) 2: Lac de Montorge bei Sitten (Koch 1945).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
A socio-ecological approach towards understanding conflict between leopards (Panthera pardus) and humans in South Africa: Implications for leopard conservation and farming livelihoods
Creators: name: Constant, Natasha Louise
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat

description: (Uploaded by Plazi for the Bat Literature Project) The thesis investigates the socio-ecological factors driving human-leopard conflict due to livestock and game depredation in the Blouberg Mountain Range, South Africa. Local people's perceptions of conservation are shaped by historical and contemporary relationships with protected areas and particularly, by conflicts of land and natural resource use. Legacies of disempowerment, marginalisation and stigmatisation manifest through people's conservation discourses, social conflict and resistance towards protected area establishment, a process defined as traumatic nature. Traumatic nature elevates distrust of local people towards wildlife authorities and decreases support for wildlife conservation, aggravating humanleopard conflicts. Leopard predation on livestock and game is most strongly influenced by distance to village and distance to water, respectively, in addition to seasonal grazing patterns, the calving season and poor livestock husbandry practices. Livestock depredation represents significant economic costs for subsistence communal farmers', which is exacerbated by the erosion of traditional cattle sharing systems and a lack of alternative livelihood strategies. Livestock depredation results in the loss of functional and material benefits, social capital, a spiritual resource, diminished wellbeing and perceived cultural decay. Camera trap results showed a lower leopard density of 0.7 leopards per 100km2 on commercial farms compared to the Blouberg Nature Reserve of 5.4 leopards per 100km2. Commercial farms may function as ecological traps because they represent areas with disproportionate leopard mortality that otherwise provide a high abundance of prey species for leopards. A male-biased sex ratio and a high number of sub-adult male leopards indicate high leopard mortality rates in the population. Camera trap results show low occupancy rates on communal land that may reflect a low large prey biomass, potentially caused by overhunting and habitat conversion. Farming communities ascribe a wide range of environmental values to the leopard that provide barriers and support for leopard conservation. Environmental institutions need to improve responses to reports of human-leopard conflicts and build trust and legitimacy in the eyes of local people by developing stronger working relationships with farming communities. The decentralisation of authority to local government actors to manage human-leopard conflicts and the devolution of responsibility to farmers to improve livestock husbandry practices is necessary to reduce depredation incidents. Incentive and education schemes are important for reducing lethal control measures and to improve tolerance of depredation incidents and leopard conservation.
Principal Poincaré Pontryagin Function associated to some families of Morse real polynomials
Creators: name: Pelletier, Michele
name: Uribe, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34M35, 34C08, 14D05

description: It is known that the Principal Poincaré Pontryagin Function is generically an Abelian integral. We give a sufficient condition on monodromy to ensure that it is an Abelian integral also in non generic cases. In non generic cases it is an iterated integral. Uribe [17, 18] gives in a special case a precise description of the Principal Poincaré Pontryagin Function, an iterated integral of length at most 2, involving logarithmic functions with only one ramification at a point at infinity. We extend this result to some non isodromic families of real Morse polynomials.
description: arXiv admin note: substantial text overlap with arXiv:1104.4021
Inhomogeneous "longitudinal" plane waves in a deformed elastic material
Creators: name: Destrade, Michel
name: Hayes, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A homogeneous isotropic compressible Hadamard material has the property that an infinitesimal longitudinal homogeneous plane wave may propagate in every direction when the material is maintained in a state of arbitrary finite static homogeneous deformation. Here, as regards the wave, 'homogeneous' means that the direction of propagation of the wave is parallel to the direction of eventual attenuation and 'longitudinal' means that the wave is linearly polarized in a direction parallel to the direction of propagation. In other words, the displacement is of the form u = n cos k(n.x - ct), where n is a real vector. It is seen that the Hadamard material is the most general one for which a 'longitudinal' inhomogeneous plane wave may also propagate in any direction of a predeformed body. Here, 'inhomogeneous' means that the wave is attenuated in a direction distinct from the direction of propagation and 'longitudinal' means that the wave is elliptically polarized in the plane containing these two directions. In other words, the displacement is of the form u = Re {S exp[i (omega S.x - ct)]}, where S is a complex vector (or bivector). Then a Generalized Hadamard material is introduced. It is the most general homogeneous isotropic compressible material which allows the propagation of infinitesimal 'longitudinal' inhomogeneous plane circularly polarized waves for all choices of the isotropic directional bivector. Finally, the most general forms of response functions are found for homogeneously deformed isotropic elastic materials in which 'longitudinal' inhomogeneous plane waves may propagate with a circular polarization in each of the two planes of central circular section of the B^n-ellipsoid, where B is the left Cauchy-Green strain tensor corresponding to the primary pure homogeneous deformation.
Single qubit gates in frequency-crowded transmon systems
Creators: name: Schutjens, R.
name: Dagga, F. Abu
name: Egger, D. J.
name: Wilhelm, F. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent experimental work on superconducting transmon qubits in 3D cavities show that their coherence times are increased by an order of magnitude compared to their 2D cavity counterparts. However to take advantage of these coherence times while scaling up the number of qubits it is advantageous to address individual qubits which are all coupled to the same 3D cavity fields. The challenge in controlling this system comes from spectral crowding, where leakage transition of qubits are close to computational transitions in other. Here it is shown that fast pulses are possible which address single qubits using two quadrature control of the pulse envelope while the DRAG method alone only gives marginal improvements over the conventional Gaussian pulse shape. On the other hand, a first order result using the Magnus expansion gives a fast analytical pulse shape which gives a high fidelity gate for a specific gate time, up to a phase factor on the second qubit. Further numerical analysis corroborates these results and yields to even faster gates, showing that leakage state anharmonicity does not provide a fundamental quantum speed limit.
Planungskultur - mehr Ahnung von Planung? Oder was man sich davon verspricht
Creators: name: Levin-Keitel, Meike
name: Othengrafen, Frank
Publisher: name: Abingdon : Taylor and Francis Ltd.
Year: 2016
Subjects: subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::710 | Landschaftsgestaltung, Raumplanung
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: Planning culture is a term that is often used in planning theory and practice as numerous publications and research projects show. However, planning culture as an action-oriented research perspective is often less well-defined or not used coherently. Against this background, it seems necessary to have a closer look at the current concepts of planning culture. It is thus the goal of this special issue to critically reflect on current analytical approaches and empirical evidence related to planning culture. By doing so, this special issue also discusses the question to what extent planning cultures can contribute to a contemporary understanding of planning processes. © 2017 ETH Eidgenössiche Technische Hochschule Zürich.
The Impact of Foreign Aid on Local Development: A Grid Cell Analysis
Creators: name: Bitzer, Jürgen
name: Gören, Erkan
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Mathematical Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: Computational Biology

description: We examine whether geocoded World Bank foreign aid projects affect economic activity at the level of equally sized grid cells with a spatial resolution of 0.5 decimal degrees latitude and longitude. We use geospatial data for 58,676 grid cells during the period 1997-2013 with about one million grid-by-year observations. Using fixed effects estimating techniques, we evaluate the impact of World Bank foreign aid projects on grid cell night-time light growth. The estimates reveal that World Bank foreign aid projects contribute significantly and positively to grid cell economic activity measured by night-time light growth. We complement the fast-growing literature using geocoded data to assess aid effectiveness at the subnational level. We provide evidence that the lack of robust empirical findings at the country and subnational (e.g., ADM1 and ADM2) level can be explained due to spatial aggregation and the choice of spatial units. Additional estimates and robustness tests further corroborate our main findings.
On the Effect of Surface Heat-Flux Heterogeneities on the Mixed-Layer-Top Entrainment
Creators: name: Sühring, Matthias
name: Maronga, Björn
name: Herbort, Florian
name: Raasch, Siegfried
Publisher: name: Berlin : Kluwer Academic Publishers
Year: 2014
Subjects: subject: Encroachment
subject: Entrainment
subject: Surface heterogeneity
subject: Boundary layer flow
subject: Boundary layers
subject: Heat flux
subject: Large eddy simulation
subject: Surface properties
subject: Convective boundary layers
subject: Horizontal advection
subject: Secondary circulation
subject: Sensible heat flux
subject: Surface heterogeneities
subject: Temporal evolution
subject: Thermal convections
subject: Air entrainment
subject: atmospheric circulation
subject: heterogeneity
subject: large eddy simulation
subject: mixed layer
subject: mixing
subject: sensible heat flux
subject: temporal evolution
subject: thermal convection
subject: wind velocity
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: We used a set of large-eddy simulations to investigate the effect of one-dimensional stripe-like surface heat-flux heterogeneities on mixed-layer top entrainment. The profiles of sensible heat flux and the temporal evolution of the boundary-layer depth revealed decreased entrainment for small heat-flux amplitudes and increased entrainment for large heat-flux amplitudes, compared to the homogeneously-heated mixed layer. For large heat-flux amplitudes the largest entrainment was observed for patch sizes in the order of the boundary-layer depth, while for significantly smaller or larger patch sizes entrainment was similar as in the homogeneous case. In order to understand the underlying physics of this impact, a new approach was developed to infer local information on entrainment by means of the local flux divergence. We found an entrainment maximum over the centre of the stronger heated surface patch, where thermal energy is accumulated by the secondary circulation (SC) that was induced by the surface heterogeneity. Furthermore, we observed an entrainment maximum over the less heated patch as well, which we suppose is to be linked to the SC-induced horizontal flow convergence at the top of the convective boundary layer (CBL). For small heat-flux amplitudes a counteracting effect dominates that decreases entrainment, which we suppose is the horizontal advection of cold air in the lower, and warm air in the upper, CBL by the SC, stabilizing the CBL and thus weakening thermal convection. Moreover, we found that a mean wind can reduce the heterogeneity-induced impact on entrainment. If the flow is aligned perpendicular to the border between the differentially-heated patches, the SC and thus its impact on entrainment vanishes due to increased horizontal mixing, even for moderate wind speeds. However, if the flow is directed parallel to the border between the differentially-heated patches, the SC and thus its impact on entrainment persists.
Influence of the U3O7 domain structure on cracking during the oxidation of UO2
Creators: name: Desgranges, Lionel
name: Palancher, Hervé
name: Gamaléri, M.
name: Micha, Jean-Sébastien
name: Optasanu, Virgil
name: Raceanu, Laura
name: Montesin, Tony
name: Creton, Nicolas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Cracking is observed when a UO_{2} single crystal is oxidised in air. Previous studies led to the hypothesis that cracking occurs once a critical depth of U_{3}O_{7} oxidised layer is reached. We present some μ-Laue X-ray diffraction results, which evidence that the U_{3}O_{7} layer, grown by topotaxy on UO_{2}, is made of domains with different crystalline orientations. This observation was used to perform a modelling of oxidation coupling chemical and mechanical parameters, which showed that the domain patterning induces stress localisation. This result is discussed in comparison with stress localisation observed in thin layer deposited on a substrate and used to propose an interpretation of UO_{2} oxidation and cracking.
Pilot plots implementation
Creators: name: Basile, Boris
Publisher: name: Zenodo
Year: 2023

description: The objective of the present deliverable is to describe (a) the different experimental parcels belonging to the three end-users involved in VITIGEOSS (Mastroberardino, Italy; Symington, Portugal; Torres, Spain) and (b) the experimental field activity that will be carried out to collect the data to be used for model calibration/training, fine-tuning and validation.
Arabidopsis peroxisome proteomics
Creators: name: Bussell, John D.
name: Behrens, Christof
name: Ecke, Wiebke
name: Eubel, Holger
Publisher: name: Lausanne : Frontiers Research Foundation
Year: 2013
Subjects: subject: Peroxisome
subject: Subcellular localization
subject: Protein:protein interaction
subject: Free-flow electrophoresis
subject: Functional proteomics
subject: Targeted quantitation of proteins
subject: Arabidopsis thaliana
subject: Peroxisomen
subject: Subzelluläre Lokalisation
subject: Protein-Protein-Wechselwirkung
subject: Protein-Protein-Interaktion
subject: Free-flow-Elektrophorese
subject: Freifluss-Elektrophorese
subject: Trägerfreie Elektrophorese
subject: Funktionelle Proteomik
subject: Proteinquantifizierung
subject: Gezielte Proteinquantifizierung
subject: Proteomanalyse
subject: Ackerschmalwand
subject: Peroxisom
subject: Protein-Protein-Wechselwirkung
subject: Freie Elektrophorese
subject: Proteomanalyse
subject: Quantifizierung
subject: Protein
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: The analytical depth of investigation of the peroxisomal proteome of the model plant Arabidopsis thaliana has not yet reached that of other major cellular organelles such as chloroplasts or mitochondria. This is primarily due to the difficulties associated with isolating and obtaining purified samples of peroxisomes from Arabidopsis. So far only a handful of research groups have been successful in obtaining such fractions. To make things worse, enriched peroxisome fractions frequently suffer from significant organellar contamination, lowering confidence in localization assignment of the identified proteins. As with other cellular compartments, identification of peroxisomal proteins forms the basis for investigations of the dynamics of the peroxisomal proteome. It is therefore not surprising that, in terms of functional analyses by proteomic means, peroxisomes are lagging considerably behind chloroplasts or mitochondria. Alternative strategies are needed to overcome the obstacle of hard-to-obtain organellar fractions. This will help to close the knowledge gap between peroxisomes and other organelles and provide a full picture of the physiological pathways shared between organelles. In this review, we briefly summarize the status quo and discuss some of the methodological alternatives to classic organelle proteomic approaches.
On one dimensional inverse problems arising from polarimetric measurements of nematic liquid crystals
Creators: name: Capdeboscq, Yves
name: Tsering-Xiao, Basang
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We revisit the problem of determining dielectric parameters in layered nematic liquid crystals from polarimetric measurements originally introduced by Lionheart & Newton. After a detailed analysis of the model, of the scales involved, and of natural obstacles to the reconstruction of more than one dielectric parameters, we produce two simple one-dimensional inverse problems which can be studied without any expertise in liquid crystals. We then confirm that very little can be recovered about the internal configuration of smooth dielectric parameters from these measurements, and give a uniqueness result for one of the two problem, when the unknown parameter satisfies a monotonicity property. In that case, the available data can be expressed in terms of Laplace and Hankel transforms.
description: 23 pages 3 figures
Two new phenolic glycosides from the roots of Iris domestica (L.) Goldblatt & Mabb and their cytotoxic activity
Creators: name: Zong, Tieqiang
name: Cui, Lantian
name: Sun, Jinfeng
name: Hu, Zhengyu
name: Yang, Pengcheng
name: Li, Mingxia
name: Jin, Mei
name: Zhou, Wei
name: Li, Gao
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified

description: Two new phenolic glycosides, Diplostephioside D (1) and Diplostephioside E (2) together with ten known phenols (3–12) were isolated from the dried roots of Iris domestica (L.) Goldblatt & Mabb. Among them, compounds 4–9 have not been reported previously from the family Iridaceae. The chemical structures were elucidated based on extensive spectroscopic experiments, including 1D and 2D NMR as well as HR-ESI-MS, and comparison with those reported in the literature. All of the isolated compounds were evaluated for their cytotoxic activity against HeLa cells. Compounds 1, 2, 4, 8 and 12 showed cytotoxic activities with IC50 values ranging from 13.52 ± 1.52 to 53.33 ± 1.40 μM.
On-line estimation of local oscillator noise and optimisation of servo parameters in atomic clocks
Creators: name: Leroux, Ian D.
name: Scharnhorst, Nils
name: Hannig, Stephan
name: Kramer, Johannes
name: Pelzer, Lennart
name: Stepanova, Mariia
name: Schmidt, Piet O.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: Atomic frequency standards
subject: Local oscillator noise
subject: Quantum projection noise
subject: Servo optimisation
subject: Atomic clocks
subject: Frequency standards
subject: Optimization
subject: Frequency fluctuation
subject: Local oscillator frequencies
subject: Local oscillators
subject: Optimal linear prediction
subject: Optimisations
subject: Spectral properties
subject: Parameter estimation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: For atomic frequency standards in which fluctuations of the local oscillator (LO) frequency are the dominant noise source, we examine the role of the the servo algorithm that predicts and corrects these frequency fluctuations. We derive the optimal linear prediction algorithm, showing how to measure the relevant spectral properties of the noise and optimise servo parameters while the standard is running, using only the atomic error signal. We find that, for realistic LO noise spectra, a conventional integrating servo with a properly chosen gain performs nearly as well as the optimal linear predictor. Using simple analytical models and numerical simulations, we establish optimum probe times as a function of clock atom number and of the dominant noise type in the local oscillator. We calculate the resulting LO-dependent scaling of achievable clock stability with atom number for product states as well as for maximally-correlated states.
Abundances of neutron-capture elements in stars of the galactic disk substructures
Creators: name: Mishenina, T. V.
name: Pignatari, M.
name: Korotin, S. A.
name: Soubiran, C.
name: Charbonnel, C.
name: Thielemann, F. -K.
name: Gorbaneva, T. I.
name: Basak, N. Yu.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The aim of this work is to present and discuss the observations of the iron peak (Fe, Ni) and neutron-capture element (Y, Zr, Ba, La, Ce, Nd, Sm, and Eu) abundances for 276 FGK dwarfs, located in the galactic disk with metallicity -1 < [Fe/H] < +0.3. Atmospheric parameters and chemical composition of the studied stars were determined from an high resolution, high signal-to-noise echelle spectra obtained with the echelle spectrograph ELODIE at the Observatoire de Haute-Provence (France). Effective temperatures were estimated by the line depth ratio method and from the H_α line-wing fitting. Surface gravities (log g) were determined by parallaxes and the ionization balance of iron. Abundance determinations were carried out using the LTE approach, taking the hyperfine structure for Eu into account, and the abundance of Ba was computed under the NLTE approximation. We are able to assign most of the stars in our sample to the substructures of the Galaxy thick disk, thin disk, or Hercules stream according to their kinematics. The classification of 27 stars is uncertain. For most of the stars in the sample, the abundances of neutron-capture elements have not been measured earlier. For all of them, we provide the chemical composition and discuss the contribution from different nucleosynthesis processes.
Synchrotron emission driven by the Cherenkov-drift instability in active galactic nuclei
Creators: name: Osmanov, Zaza
name: Chkheidze, Nino
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the present paper we study generation of the synchrotron emission by means of the feedback of Cherenkov drift waves on the particle distribution via the diffusion process. It is shown that despite the efficient synchrotron losses the excited Cherenkov drift instability leads to the quasi-linear diffusion (QLD), effect of which is balanced by dissipation factors and as a result the pitch angles are prevented from damping, maintaining the corresponding synchrotron emission. The model is analyzed for a wide range of physical parameters and it is shown that the mechanism of QLD guarantees the generation of electromagnetic radiation from soft $X$-rays up to soft $γ$-rays, strongly correlated with Cherenkov drift emission ranging from IR up to UV energy domains.
description: 8 pages, 3 figures
Echinodorus ranunculoides
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. ranunculoides (L.) Engelm. (Alisma ranunculoides L.) 2: Saillon (Garns Lit. 1927b, S. 184).
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: Nutzen-Risiko-Abwägung einer flächendeckenden Anreicherung von Mehl mit Folsäure: Stellungnahme Nr. 027/2017 des BfR vom 13. September 2017
Creators: name: Bundesinstitut Für Risikobewertung
Publisher: name: Bundesbehörden und Einrichtungen im Geschäftsbereich des Bundesministeriums für Ernährung und Landwirtschaft (BMEL)
Year: 2017
Subjects: subject: 000

description: BfR-Stellungnahmen, vol. 2017, no. 027, p. 31
The Gross-Pitaevskii Equation and Bose-Einstein condensates
Creators: name: Rogel-Salazar, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The Gross-Pitaevskii equation is discussed at the level of an advanced course on statistical physics. In the standard literature the Gross-Pitaevskii equation is usually obtained in the framework of the second quantisation formalism, which in many cases goes beyond the material covered in many advanced undergraduate courses. In this paper, we motivate the derivation of the Gross-Pitaevskii equation (GPE) in relationship to concepts from statistical physics, highlighting a number of applications from dynamics of a Bose-Einstein condensate to the excitations of the gas cloud. This paper may be helpful not only in encouraging the discussion of modern developments in a statistical mechanics course, but also can be of use in other contexts such as mathematical physics and modelling. The paper is suitable for undergraduate and graduate students, as well as general physicists.
Evaluation of large-eddy simulations forced with mesoscale model output for a multi-week period during a measurement campaign
Creators: name: Heinze, Rieke
name: Moseley, Christopher
name: Böske, Lennart Nils
name: Muppa, Shravan Kumar
name: Maurer, Vera
name: Raasch, Siegfried
name: Stevens, Björn
Publisher: name: Göttingen : Copernicus GmbH
Year: 2017
Subjects: subject: Large-eddy simulation
subject: LES
subject: HOPE
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Large-eddy simulations (LESs) of a multi-week period during the HD(CP)2 (High-Definition Clouds and Precipitation for advancing Climate Prediction) Observational Prototype Experiment (HOPE) conducted in Germany are evaluated with respect to mean boundary layer quantities and turbulence statistics. Two LES models are used in a semi-idealized setup through forcing with mesoscale model output to account for the synoptic-scale conditions. Evaluation is performed based on the HOPE observations. The mean boundary layer characteristics like the boundary layer depth are in a principal agreement with observations. Simulating shallow-cumulus layers in agreement with the measurements poses a challenge for both LES models. Variance profiles agree satisfactorily with lidar measurements. The results depend on how the forcing data stemming from mesoscale model output are constructed. The mean boundary layer characteristics become less sensitive if the averaging domain for the forcing is large enough to filter out mesoscale fluctuations. © Author(s) 2017.
Ancillary services analysis of an offshore wind farm cluster-technical integration steps of a simulation tool
Creators: name: Hennig, Tobias
name: Löwer, Lothar
name: Faiella, Luis Mariano
name: Stock, Sebastian
name: Jansen, Malte
name: Hofmann, Lutz
name: Rohrig, Kurt
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: Ancillary services
subject: Cluster control, reserve, balancing power
subject: EERA-DTOC
subject: HVDC technology
subject: Offshore wind farms
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this publication, the authors present methodology and example results for the analysis of ancillary services of an offshore wind farm cluster and its electrical power system. Thereby the operation tool Wind Cluster Management System (WCMS) is used as simulation tool to evaluate certain planning scenarios. Emphasis is made on two topics: 1) the integration of high voltage direct current (HVDC) technology to the WCMS, 2) the ancillary service analysis. As examples, voltage source converter based HVDC (VSC-HVDC) and the provision of reserve respectively balancing power are discussed in detail. The analyzed study case considers the Kriegers Flak area while the associated power system connects wind farms to Sweden, Denmark and Germany.
A study of the diffusion pattern in N=4 SYM at high energies
Creators: name: Caporale, F.
name: Chachamis, G.
name: Madrigal, J. D.
name: Murdaca, B.
name: Vera, A Sabio
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the context of evolution equations and scattering amplitudes in the high energy limit of the N=4 super Yang-Mills theory we investigate in some detail the BFKL gluon Green function at next-to-leading order. In particular, we study its collinear behaviour in terms of an expansion in different angular components. We also perform a Monte Carlo simulation of the different final states contributing to such a Green function and construct the diffusion pattern into infrared and ultraviolet modes and multiplicity distributions, making emphasis in separating the gluon contributions from those of scalars and gluinos. We find that the combined role of the non-gluonic degrees of freedom is to improve the collinear behavior and reduce the diffusion into ultraviolet regions while not having any effect on the average multiplicities or diffusion into the infrared. In terms of growth with energy, the non-zero conformal spin components are mainly driven by the gluon terms in the BFKL kernel. For zero conformal spin (Pomeron) the effect of the scalar and gluino sectors is to dramatically push the Green function towards higher values.
description: 12 pages, 8 figures
No evidence for intense, cold accretion onto YSOs from measurements of Li in T-Tauri stars
Creators: name: Sergison, Darryl J.
name: Mayne, N. J.
name: Naylor, Tim
name: Jeffries, R. D.
name: Bell, Cameron P. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have used medium resolution spectra to search for evidence that proto-stellar objects accrete at high rates during their early 'assembly phase'. Models predict that depleted lithium and reduced luminosity in T-Tauri stars are key signatures of 'cold' high-rate accretion occurring early in a star's evolution. We found no evidence in 168 stars in NGC 2264 and the Orion Nebula Cluster for strong lithium depletion through analysis of veiling corrected 6708 angstrom lithium spectral line strengths. This suggests that 'cold' accretion at high rates (M_dot > 5 x 10-4 M_sol yr-1) occurs in the assembly phase of fewer than 0.5 per cent of 0.3 < M < 1.9 M_sol stars. We also find that the dispersion in the strength of the 6708 angstrom lithium line might imply an age spread that is similar in magnitude to the apparent age spread implied by the luminosity dispersion seen in colour magnitude diagrams. Evidence for weak lithium depletion (< 10 per cent in equivalent width) that is correlated with luminosity is also apparent, but we are unable to determine whether age spreads or accretion at rates less than 5 x 10-4 M_sol yr-1 are responsible.
description: 13 pages, 10 figures; Accepted for publication in Monthly Notices of the Royal Astronomical Society, 2013 June 03
Performance of large-format digital cameras
Creators: name: Jacobsen, Karsten
Publisher: name: Göttingen : Copernicus GmbH
Year: 2014
Subjects: subject: photogrammetry
subject: analysis
subject: camera
subject: geometric
subject: radiometric
subject: quality
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Based on test blocks and standard production blocks Z/I Imaging DMCII-140, 230 and 250 as well as UltraCam Eagle images have been analyzed by bundle block adjustment with self calibration. By analysis of image coordinate residuals it is possible to check remaining systematic image errors and to update the set of additional parameters to the required combination. The Hannover program BLUH is using a basic set of 12 additional parameters which is a combination between geometric parameters and Fourier parameters in polar coordinates. In addition it is necessary to use a set of special additional parameters for the combination of the 9 UltraCam sub-CCDs. CCDs are often not flat enough, causing a bending of the edges. For the correct handling of such effects, special additional parameters are required to eliminate or at least reduce remaining systematic effects at image corners. For all DMCII-blocks with 5cm, 7cm, 9cm and 20cm GSD the root mean square size of the systematic image errors with 0.05pixels is very small. Only the basic set of 12 additional parameters is required, the special parameters for the image corners did not improve the accuracy determined with independent check points. Against former results with UltraCam images the monolithic stitching of the panchromatic sub-images to the green image improved the image geometry, nevertheless for reaching the highest accuracy the full set of 52 additional parameters is required, leading to systematic image errors in the root mean square of approximately 0.2pixels. This seems to be small, but it is causing a model deformation up to more as 1.0 GSD in the height, while in the case of the DMCII-images the model deformation did not exceed 0.2 GSD in Z. The major reason for the UltraCam Eagle image deformation seems to be caused by corner effects of the green reference image. Such an effect can be avoided with a better calibration. The DMCII and the UltraCam Eagle images were improved by the firm ware for edge enhancement, influencing also the effective image resolution, determined by edge analysis. No real loss of the effective against the nominal resolution can be seen. Nevertheless the UltraCam Eagle images are a little noisy, which may be caused by the edge enhancement and by the imaging in January.
The standard flare model in three dimensions. II. Upper limit on solar flare energy
Creators: name: Aulanier, G.
name: Demoulin, P.
name: Schrijver, C. J.
name: Janvier, M.
name: Pariat, E.
name: Schmieder, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Solar flares strongly affect the Sun's atmosphere as well as the Earth's environment. Quantifying the maximum possible energy of solar flares of the present-day Sun, if any, is thus a key question in heliophysics. The largest solar flares observed over the past few decades have reached energies of a few times 10^{32} ergs, possibly up to 10^{33} ergs. Flares in active Sun-like stars reach up to about 10^{36} ergs. In the absence of direct observations of solar flares within this range, complementary methods of investigation are needed. Using historical reports for solar active region, we scaled to observed solar values a realistic dimensionless 3D MHD simulation for eruptive flares, which originate from a highly sheared bipole. This enabled us to calculate the magnetic fluxes and flare energies in the model in a wide paramater space. Firstly, commonly observed solar conditions lead to modeled magnetic fluxes and flare energies that are comparable to those estimated from observations. Secondly, we evaluate from observations that 30% of the area of sunspot groups are typically involved in flares. This is related to the strong fragmentation of these groups, which naturally results from sub-photospheric convection. When the model is scaled to 30% of the area of the largest sunspot group ever reported, with its peak magnetic field being set to the strongest value ever measured in a sunspot, it produces a flare with a maximum energy of ~ 6x10^{33} ergs. The results of the model suggest that the Sun is able to produce flares up to about six times as energetic in total solar irradiance fluence as the strongest directly-observed flare from Nov 4, 2003. Sunspot groups larger than historically reported would yield superflares for spot pairs that would exceed tens of degrees in extent. We thus conjecture that superflare-productive Sun-like stars should have a much stronger dynamo than in the Sun.
description: 8 pages, 4 figures
Electrical and high-frequency properties of compensated GaN under electron streaming conditions
Creators: name: Syngayivska, G. I.
name: Korotyeyev, V. V.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Conditions required for the streaming effect and the optical-phonon transit-time resonance to take place in a compensated bulk GaN are analyzed in detail. Monte Carlo calculations of the high-frequency differential electron mobility are carried out. It is shown that the negative dynamic differential mobility can be realized in the terahertz frequency range, at low lattice temperatures of 30--77 K, and applied electric fields of 3--10 kV/cm. New manifestations of the streaming effect are revealed, namely, the anisotropy of the dynamic differential mobility and a specific behavior of the diffusion coefficient in the direction perpendicular to the applied electric field. The theory of terahertz radiation transmission through the structure with an epitaxial GaN layer is developed. Conditions for the amplification of electromagnetic waves in the frequency range of 0.5--2 THz are obtained. The polarization dependence of the radiation transmission coefficient through the structure in electric fields above 1 kV/cm is found.
description: 16 pages, 13 figures
The application of flory-huggins-thermodynamics for industrial membrane manufacture via evaporative casting
Creators: name: Metze, M.
name: Barbe, S.
name: Reiche, A.
name: Melzner, D.
name: Scheper, T.
Publisher: name: London : Elsevier Ltd.
Year: 2012
Subjects: subject: Drying paths
subject: Evaporativ casting
subject: Flory-huggins-thermodynamic
subject: Phasediagrams
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [No abstract available]
Regions of interest for functional connectivity correlates of widespread pain in children
Creators: name: Beltz, Adriene
name: Kaplan, Chelsea
name: Hidalgo-Lopez, Esmeralda
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Developmental Psychology
subject: Neuroscience and Neurobiology
subject: Developmental Neuroscience
subject: Social and Behavioral Sciences
subject: Life Sciences
subject: Psychology
subject: FOS: Psychology
subject: Medicine and Health Sciences
subject: Neurosciences
subject: FOS: Clinical medicine
subject: Medical Sciences
subject: sensorimotor network
subject: fMRI
subject: default mode network
subject: widespread pain
subject: functional connectivity
subject: pediatric
subject: children
subject: salience network

description: In order to study the neural correlates of widespread pain in children, connectivity analyses will be performed with resting state and task-based fMRI. The following registration comprises evidence-based arguments for the selection of a priori-defined regions of interest.
Comparison of Electromagnetic and Marangoni Forces on Thin Coatings during Rapid Heating Process
Creators: name: Steinberg, T.
name: Opitz, T.
name: Rybakov, A.
name: Baake, E.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: Aluminum alloys
subject: Manganese alloys
subject: Aluminum silicons
subject: Dry spot
subject: Manganese steel
subject: Marangoni
subject: Marangoni force
subject: Rapid heating process
subject: Thin coating
subject: Silicon alloys
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: The present paper is dedicated to the investigation of Marangoni and Lorentz forces in a rapid heating process. During the melting of aluminum-silicon (AlSi) layer on the bor-manganese steel 22MnB5, the liquid AlSi is shifting from the middle to the side and leaves dry spots on the steel due to a combination of both forces. In order to solve this process design issue, the impact of each force in the process will be evaluated. Evaluation is carried out using experimental data and numerical simulation.
Elodea canadensis Michaux
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. canadensis Michaux l: Genfersee bei Bouveret (Villaret 1952 und 1953).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Simulation of electrically induced vortical flows
Creators: name: Dzelme, V.
name: Jakovics, A.
name: Chudnovsky, A.
name: Baake, E.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: electrovortex
subject: magnetohydrodynamics
subject: simulation
subject: Deformation
subject: Magnetic materials
subject: Magnetohydrodynamics
subject: Open systems
subject: Axial velocity
subject: Characteristic velocities
subject: Free surface deformations
subject: Injected current
subject: Linear functions
subject: Vortical flows
subject: Open source software
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this work, we study electrically induced flows numerically using open-source software and experimentally. Two systems are considered - single and multiphase (free surface) flows driven by axisymmetric DC and AC current injection. We investigate characteristic velocity and free surface deformation dependence on the injected current and validate it with experimental data. Results show that maximum axial velocity is a linear function of injected current, but free surface deformations are approximately proportional to current squared.