cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Symmetry reduction due to gallium substitution in the garnet Li6.43(2)Ga0.52(3)La2.67(4)Zr2O12
Creators: name: Robben, Lars
name: Merzlyakova, Elena
name: Heitjans, Paul
name: Gesing, Thorsten M.
Publisher: name: Chester : International Union of Crystallography
Year: 2016
Subjects: subject: crystal structure
subject: garnet
subject: lithium lanthanum zirconate (LLZO)
subject: symmetry reduction
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Single-crystal structure refinements on lithium lanthanum zirconate (LLZO; Li7La3Zr2O12) substituted with gallium were successfully carried out in the cubic symmetry space group I [Formula: see text]3d. Gallium was found on two lithium sites as well as on the lanthanum position. Due to the structural distortion of the resulting Li6.43(2)Ga0.52(3)La2.67(4)Zr2O12 (Ga-LLZO) single crystals, a reduction of the LLZO cubic garnet symmetry from Ia[Formula: see text] d to I [Formula: see text]3d was necessary, which could hardly be analysed from X-ray powder diffraction data.
title: Endangered Species Act Section 7 Formal Consultation for the Cold Elk Range Analysis, Wallowa County, Oregon, HUCs 1706010606, 1706010604, and 1706010301
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2019-02750
title: Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for Snohomish County’s Riverview/Rivershore Road Embankment Repair Project on the Snohomish River, Snohomish County, Washington, COE Number: NWS-2016-798
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2019

description: ESA Section 7 Consultation ; WCRO-2018-01048
Soil wettability can be explained by the chemical composition of particle interfaces-An XPS study
Creators: name: Woche, Susanne K.
name: Goebel, Marc-Oliver
name: Mikutta, Robert
name: Schurig, Christian
name: Kaestner, Matthias
name: Guggenberger, Georg
name: Bachmann, Jörg
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Soil wettability (quantified in terms of contact angle, CA) is crucial for physical, chemical, and biological soil functioning. As the CA is determined by components present within the outmost nanometer of particles, this study applied X-ray photoelectron spectroscopy (XPS) with a maximum analysis depth of 10 nm to test the relationship between CA and surface elemental composition, using soil samples from a chronosequence where CA increased from 0° (0 yrs) to about 98° (120 yrs). Concurrently, as seen by XPS, C and N content increased and the content of O and the mineral-derived cations (Si, Al, K, Na, Ca, Mg, Fe) decreased. The C content was positively correlated with CA and least squares fitting indicated increasing amounts of non-polar C species with soil age. The contents of O and the mineral-derived cations were negatively correlated with CA, suggesting an increasing organic coating of the minerals that progressively masked the underlying mineral phase. The atomic O/C ratio was found to show a close negative relationship with CA, which applied as well to further sample sets of different texture and origin. This suggests the surface O/C ratio to be a general parameter linking surface wettability and surface elemental composition.
Ranunculus alpestris Brugger
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. Absinthium L. Cat. 193. Bis 2582 m: Bahnhof Riffelberg ob Zermatt, reichlich (Becherer 1950); andere hohe Fundstellen sind: unter der Weisshornhütte bei Randa, gegen 2500 m (Huber); Valsorey, 2150 m (Guyot); unter der Täschalp,2100 m (Huber); Findelenbei Zermatt, 2100m (Christ, Thellung). Var. alpestris Brügger - Wallis (nach Garns in Hegi).
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: Endangered Species Act Section 7 Formal Consultation and Magnuson-Stevens Fishery Conservation and Management Act Essential Fish Habitat Consultation for Elliott Bay Marina’s Floating Breakwater Replacement Project, King County, Washington, COE Number: NWS-2012-423
titleType: Other
Creators: name: United States. National Marine Fisheries Service
Publisher: name: United States. National Marine Fisheries Service
Year: 2018

description: ESA Section 7 Consultation ; WCRO-2018-01047
Real analytic families of harmonic functions in a domain with a small hole
Creators: name: Riva, Matteo Dalla
name: Musolino, Paolo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 31B05, 31B10, 35B25, 35C20, 35J25

description: Let n\ge 3. Let Ω^i and Ω^o be open bounded connected subsets of R^n containing the origin. Let ε_0>0 be such that Ω^o contains the closure of εΩ^i for all ε\in]-ε_0,ε_0[. Then, for a fixed ε\in]-ε_0,ε_0[\{0} we consider a Dirichlet problem for the Laplace operator in the perforated domain Ω^o\εΩ^i. We denote by u_εthe corresponding solution. If p\inΩ^o and p\neq 0, then we know that under suitable regularity assumptions there exist ε_p>0 and a real analytic operator U_p from ]-ε_p,ε_p[ to R such that u_ε(p)=U_p[ε] for all ε\in]0,ε_p[. Thus it is natural to ask what happens to the equality u_ε(p)=U_p[ε] for ε<0. We show a general result on continuation properties of some particular real analytic families of harmonic functions in domains with a small hole and we prove that the validity of the equality u_ε(p)=U_p[ε] for ε<0 depends on the parity of the dimension n.
Kitaev honeycomb and other exotic spin models with polar molecules
Creators: name: Gorshkov, Alexey V.
name: Hazzard, Kaden R. A.
name: Rey, Ana Maria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that ultracold polar molecules pinned in an optical lattice can be used to access a variety of exotic spin models, including the Kitaev honeycomb model. Treating each molecule as a rigid rotor, we use DC electric and microwave fields to define superpositions of rotational levels as effective spin degrees of freedom, while dipole-dipole interactions give rise to interactions between the spins. In particular, we show that, with sufficient microwave control, the interaction between two spins can be written as a sum of five independently controllable Hamiltonian terms proportional to the five rank-2 spherical harmonics Y_{2,q}(theta,phi), where (theta,phi) are the spherical coordinates of the vector connecting the two molecules. To demonstrate the potential of this approach beyond the simplest examples studied in [S. R. Manmana et al., arXiv:1210.5518v2], we focus on the realization of the Kitaev honeycomb model, which can support exotic non-Abelian anyonic excitations. We also discuss the possibility of generating spin Hamiltonians with arbitrary spin S, including those exhibiting SU(N=2S+1) symmetry.
description: 8 pages, 2 figures, submitted to a special issue of Molecular Physics
Über Sulfide und Oxidsulfide des Samariums
Creators: name: Lissner, Falk
name: Schleid, Thomas
Publisher: name: Berlin : De Gruyter
Year: 1992
Subjects: subject: Crystal Structure
subject: Oxysulfides
subject: Samarium
subject: Sulfides
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Stoichiometric oxidation of SmCl2 with sulfur in the presence of NaCl (evacuated silica vessel, 850 °C, 7 d) results in the formation of A—Sm2S3 (orthorhombic, Pnma (no. 62), a = 737.64(5), b = 397.44(3), c = 1536.26(9) pm, Z = 4, Rw = 0.017). In contrast, C—Sm2S3 (cubic, I43 d (no. 220), a = 844.71(3) pm, Z = 5.333, Rw = 0.017) is obtained upon reaction of the elements (Sm : S = 2 : 3) under otherwise analogous conditions. According to Sm2.67⬜0.33S4 it represents a defect-variant of mixed-valence Th3P4-type Sm3S4 (a = 852.39(3) pm, Z = 4, Rw = 0.013) which forms whenever reducing tantalum is used as container material instead of silica tubing. Ubiquitous oxidic impurities thereby also react to yield the oxygen-poor oxysulfides Sm10S14O (tetragonal, 141/acd (no. 142), a = 1485.96(4), c = 1974.04(8), Z = 8) and Sm2OS2 (monoclinic, P21/c (no. 14), a = 840.54(6), b = 706.20(5), c = 697.72(5) pm, β = 99.294(6)°, Ζ = 4, Rw = 0.024) as by-products. Regardless of the container material, NaCltype SmS (cubic, Fm 3 m (no. 225), a = 596.04(3) pm, Z = 4) emerges as product from equimolar oxidation of samarium with sulfur. Reactions of Sm2S3 with Sm2O3 in 1: 2 molar ratios are suitable to produce Ce2O2S-type Sm2O2S (trigonal, P 3 ml (no. 164), a = 389.25(3), c = 671.18(7) pm, Z = 1) even in tantalum capsules at 850 °C when some NaCl is added as a flux.
β-Radiation Detected NMR in Solid and Liquid Neon
Creators: name: Hilmer, F.
name: Schirmer, A.
name: Ackermann, H.
name: Heitjans, Paul
name: Steckmann, H.J.
Publisher: name: Berlin : De Gruyter
Year: 1994
Subjects: subject: (23Ne) Q(23Ne)
subject: Nuclear Spin relaxation
subject: radiation detected NMR Solid and liquid Neon
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Spin-polarized β-active 23Ne (T1/2 = 37.2 s) nuclei were created by capture of polarized cold neutrons in solid and liquid neon. The angular asymmetry of the β-radiation was used to monitor the nuclear polarization. From nuclear magnetic resonance curves the value for the dipole moment| μ(23Ne)| = 1.079(1) n.m. (uncorrected) was obtained which is more precise than the literature value. Comparing the measured spin-lattice relaxation rates with those of stable 21Ne the nuclear quadrupole moment of 23Ne was determined. It agrees with a shell model calculation. The feasibility of 23Ne-β-NMR for investigations in condensed rare gases in demonstrated.
Diffraction Production in a Soft Interaction Model: Mass Distributions
Creators: name: Gotsman, E.
name: Levin, E.
name: Maor, U.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the framework of our model (GLM) for soft interaction with $α'_{\pom}(0)=0$, we propose a procedure based on Gribov's partonic interpretation of the Pomeron, which enables one to calculate the diffractive mass distributions in hadron-hadron scattering. Using the analogy with deep-inelastic scattering, we associate the Pomeron-quark interaction with the Good-Walker sector of the hadron-hadron scattering, and the Pomeron-gluon sector with the t-channel Pomeron interactions. We present predicted mass distributions for the LHC energies
description: 7 pages, 19 figures
Strobilurin biosynthesis in Basidiomycete fungi
Creators: name: Nofiani, Risa
name: De Mattos-Shipley, Kate M.J.
name: Lebe, Karen E.
name: Han, Li-Chen
name: Iqbal, Zafar
name: Bailey, Andrew M.
name: Willis, Christine L.
name: Simpson, Thomas J.
name: Cox, Russell J.
Publisher: name: London : Nature Publishing Group
Year: 2018
Subjects: subject: Aspergillus oryzae
subject: Fungi
subject: Toxophora
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Strobilurins from fungi are the inspiration for the creation of the β-methoxyacrylate class of agricultural fungicides. However, molecular details of the biosynthesis of strobilurins have remained cryptic. Here we report the sequence of genomes of two fungi that produce strobilurins and show that each contains a biosynthetic gene cluster, which encodes a highly reducing polyketide synthase with very unusual C-terminal hydrolase and methyltransferase domains. Expression of stpks1 in Aspergillus oryzae leads to the production of prestrobilurin A when the fermentation is supplemented with a benzoyl coenzyme A (CoA) analogue. This enables the discovery of a previously unobserved route to benzoyl CoA. Reconstruction of the gene cluster in A. oryzae leads to the formation of prestrobilurin A, and addition of the gene str9 encoding an FAD-dependent oxygenase leads to the key oxidative rearrangement responsible for the creation of the β-methoxyacrylate toxophore. Finally, two methyltransferases are required to complete the synthesis.
Universal Doomsday: Analyzing Our Prospects for Survival
Creators: name: Gerig, Austin
name: Olum, Ken D.
name: Vilenkin, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Given a sufficiently large universe, numerous civilizations almost surely exist. Some of these civilizations will be short-lived and die out relatively early in their development, i.e., before having the chance to spread to other planets. Others will be long-lived, potentially colonizing their galaxy and becoming enormous in size. What fraction of civilizations in the universe are long-lived? The "universal doomsday" argument states that long-lived civilizations must be rare because if they were not, we should find ourselves living in one. Furthermore, because long-lived civilizations are rare, our civilization's prospects for long-term survival are poor. Here, we develop the formalism required for universal doomsday calculations and show that while the argument has some force, our future is not as gloomy as the traditional doomsday argument would suggest, at least when the number of early existential threats is small.
description: 13 pages, 6 figures
A sneaky proof of the maximum modulus principle
Creators: name: Shalit, Orr
Publisher: name: arXiv
Year: 2013
Subjects: subject: Complex Variables (math.CV)
subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: Primary 30J99, Secondary 30A99, 47A20

description: A proof for the maximum modulus principle (in the unit disc) is presented. This proof is unusual in that it is based on linear algebra.
description: 4 pages
title: HFR-NAdr (High Frequency Radar NAdr network)
Creators: name: OGS
name: NIB
name: ARSO
name: ARPA FVG
Publisher: name: European HFR-Node
Year: 2023

description: The NAdr network is a WERA HF Radar System, retrieving surface currents and waves every 30' in the Gulf of Trieste (Northern Adriatic Sea). It is composed by four antennas emitting at a central frequency of 24.5 MHz. They produce data every 30 minutes, with spatial resolution of 1.5 km and maximum radial coverage of about 35-40 km. Surface ocean velocities estimated by HF Radar are representative of the upper 0.3-2.5 meters of the ocean.
Two-neutrino double-beta decay Fermi transition and two-nucleon interaction
Creators: name: Stefanik, Dusan
name: Simkovic, Fedor
name: Muto, Kazuo
name: Faessler, Amand
Publisher: name: arXiv
Year: 2013
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An exactly solvable model for a description of the two-neutrino double beta decay transition of the Fermi type is considered. By using perturbation theory an explicit dependence of the two-neutrino double beta decay matrix element on the like-nucleon pairing, particle-particle and particle-hole proton-neutron interactions by assuming a weak violation of isospin symmetry of Hamiltonian expressed with generators of the SO(5) group. It is found that there is a dominance of double beta decay transition through a single state of the intermediate nucleus. Then, an energy weighted sum rule connecting Delta Z=2 nuclei is presented and discussed. It is suggested that this sum rule can be exploited to study the residual interactions of the nuclear Hamiltonian.
description: 8 pages, 3 figures
Sulfurtransferase and thioredoxin specifically interact as demonstrated by bimolecular fluorescence complementation analysis and biochemical tests
Creators: name: Henne, Melina
name: König, Nicolas
name: Triulzi, Tiziana
name: Baroni, Sara
name: Forlani, Fabio
name: Scheibe, Renate
name: Papenbrock, Jutta
Publisher: name: Amsterdam : Elsevier
Year: 2015
Subjects: subject: Arabidopsis thaliana
subject: Bimolecular fluorescence complementation
subject: Protein interaction
subject: Thioredoxin
subject: cysteine
subject: recombinant protein
subject: sulfurtransferase
subject: thioredoxin
subject: amino acid sequence
subject: amino acid substitution
subject: Arabidopsis
subject: Article
subject: bimolecular fluorescence complementation
subject: binding site
subject: biochemical analysis
subject: confocal laser microscopy
subject: controlled study
subject: cytoplasm
subject: enzyme activity
subject: fluorescence analysis
subject: in vitro study
subject: molecular weight
subject: nonhuman
subject: oxidation reduction potential
subject: precipitation
subject: priority journal
subject: protein cross linking
subject: protein expression
subject: protein protein interaction
subject: protein purification
subject: protoplast
subject: stoichiometry
subject: substrate concentration
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Sulfurtransferases (Strs) and thioredoxins (Trxs) are members of large protein families. Trxs are disulfide reductases and play an important role in redox-related cellular processes. They interact with a broad range of proteins. Strs catalyze the transfer of a sulfur atom from a suitable sulfur donor to nucleophilic sulfur acceptors in vitro, but the physiological roles of these enzymes are not well defined. Several studies in different organisms demonstrate protein-protein interactions of Strs with members of the Trx family. We are interested in investigating the specificity of the interaction between Str and Trx isoforms. In order to use the bimolecular fluorescence complementation (BiFC), several Str and Trx sequences from Arabidopsis thaliana were cloned into the pUC-SPYNE and pUC-SPYCE split-YFP vectors, respectively. Each couple of plasmids containing the sequences for the putative interaction partners were transformed into Arabidopsis protoplasts and screened using a confocal laser scanning microscope. Compartment- and partner-specific interactions could be observed in transformed protoplasts. Replacement of cysteine residues in the redox-active site of Trxs abolished the interaction signal. Therefore, the redox site is not only involved in the redox reaction but also responsible for the interaction with partner proteins. Biochemical assays support a specific interaction among Strs and certain Trxs. Based on the results obtained, the interaction of Strs and Trxs indicates a role of Strs in the maintenance of the cellular redox homeostasis.
Scaling Between Periodic Anderson and Kondo Lattice Models
Creators: name: Dong, R.
name: Otsuki, J.
name: Savrasov, S. Y.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Continuous-Time Quantum Monte Carlo (CT-QMC) method combined with Dynamical Mean Field Theory (DMFT) is used to calculate both Periodic Anderson Model (PAM) and Kondo Lattice Model (KLM). Different parameter sets of both models are connected by the Schrieffer-Wolff transformation. For degeneracy N=2, a special particle-hole symmetric case of PAM at half filling which always fixes one electron per impurity site is compared with the results of the KLM. We find a good mapping between PAM and KLM in the limit of large on-site Hubbard interaction U for different properties like self-energy, quasiparticle residue and susceptibility. This allows us to extract quasiparticle mass renormalizations for the f electrons directly from KLM. The method is further applied to higher degenerate case and to realsitic heavy fermion system CeRhIn5 in which the estimate of the Sommerfeld coefficient is proven to be close to the experimental value.
Use of massively parallel computing to improve modelling accuracy within the nuclear sector
Creators: name: Evans, Li M.
name: Arregui-Mena, J. D.
name: Mummery, P. M.
name: Akers, R. J.
name: Surrey, E.
name: Shterenlikht, A.
name: Broggi, M.
name: Margetts, L.
Publisher: name: Brentwood : Multi - Science Publications Co LTD
Year: 2016
Subjects: subject: structural-materials
subject: cellular-automata
subject: iter divertor
subject: element
subject: microstructures
subject: variability
subject: simulation
subject: challenges
subject: composite
subject: software
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::720 | Architektur

description: The extreme environments found within the nuclear sector impose large safety factors on modelling analyses to ensure components operate in their desired manner. Improving analysis accuracy has clear value of increasing the design space that could lead to greater efficiency and reliability. Novel materials for now reactor designs often exhibit nonlinear behaviouradditionally material properties evolve due to in-service damage a combination that is difficult to model accurately. To better describe these complex behaviours a range of modelling techniques previously under pursued due to computational expense are being developed. This work presents recent advancements in three techniques: Uncertainty quantification (UQ). Cellular automata finite element (CAFE)Image based finite element methods (IBFEM). Case studies are presented demonstrating their suitability for use in nuclear engineering made possible by advancements in parallel computing hardware that is projected to be available for industry within the next decade costing of the order of $100k.
Sensory Workpieces for Process Monitoring – An Approach
Creators: name: Denkena, Berend
name: Dahlmann, D.
name: Boujnah, H.
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Workpiece distortion
subject: sensor integration
subject: process monitoring
subject: machine tools
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: Several research projects deal with the development of sensory machine components for process monitoring. Especially those components, which are closely located to the process, show acceptable sensitivities to process loads and are therefore convenient for sensor integration. Considering that workpieces represent the focus of each manufacturing process and the origin of acting force and heat fluxes, they offer a “higher quality” information source for mechanical and especially thermal process loads. The development of sensory workpieces allows novel process monitoring strategies. It leads, however, to totally different challenges concerning sensor placement, energy and data transmission. So far sensory workpieces have been subject to little research. This paper focuses on the vision and the actual developments of sensory workpieces for milling operations. First, the technical challenges are identified and concepts to meet the function requirements are introduced. Then, a simulation-based approach for the placement of strain sensors in workpieces to detect the mechanical load while machining is discussed in details. Finally, the design of signal devices and the data communication by a sensor network for process monitoring tasks are presented.
Structural and biochemical studies of sulphotransferase 18 from Arabidopsis thaliana explain its substrate specificity and reaction mechanism
Creators: name: Hirschmann, Felix
name: Krause, Florian
name: Baruch, Petra
name: Chizhov, Igor
name: Mueller, Jonathan Wolf
name: Manstein, Dietmar J.
name: Papenbrock, Jutta
name: Fedorov, Roman
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: 3'-phosphoadenosine 5'-phosphosulphate (PAPS)
subject: Arabidopsis thaliana
subject: SOT
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Sulphotransferases are a diverse group of enzymes catalysing the transfer of a sulfuryl group from 3'-phosphoadenosine 5'-phosphosulphate (PAPS) to a broad range of secondary metabolites. They exist in all kingdoms of life. In Arabidopsis thaliana (L.) Heynh. twenty-two sulphotransferase (SOT) isoforms were identified. Three of those are involved in glucosinolate (Gl) biosynthesis, glycosylated sulphur-containing aldoximes containing chemically different side chains, whose break-down products are involved in stress response against herbivores, pathogens, and abiotic stress. To explain the differences in substrate specificity of desulpho (ds)-Gl SOTs and to understand the reaction mechanism of plant SOTs, we determined the first high-resolution crystal structure of the plant ds-Gl SOT AtSOT18 in complex with 3'-phosphoadenosine 5'-phosphate (PAP) alone and together with the Gl sinigrin. These new structural insights into the determination of substrate specificity were complemented by mutagenesis studies. The structure of AtSOT18 invigorates the similarity between plant and mammalian sulphotransferases, which illustrates the evolutionary conservation of this multifunctional enzyme family. We identified the essential residues for substrate binding and catalysis and demonstrated that the catalytic mechanism is conserved between human and plant enzymes. Our study indicates that the loop-gating mechanism is likely to be a source of the substrate specificity in plants.
Pētot scēnu
Creators: name: Daugavietis, Jānis
Publisher: name: Zenodo
Year: 2023
Subjects: jaunā scēna
Rīga underground
mūzikas socioloģija
subkultūra
Arnis Balčus
ISSP
punk
DIY
Riga punk scene
2023

description: ["Jānis Daugavietis: Pētot Scēnu" – prezentācijas slaidi no Arņa Balčus fotoizstātes "Scēna" pasākumu sērijas ISSP galerijā Berga bazārā Rīgā, 2023.gada 1. novembrī]
Pieejama arī:https://docs.google.com/presentation/d/1d-Z6pXDRNLYdzP_DpeAqc8yojalH4zi4cQdKmcArYg4/edit?usp=sharinghttps://www.youtube.com/watch?v=wGGEA3B08MY
 
"Arņa Balčus izstādes "Scēna" ietvaros 1. novembrī plkst. 18.00 norisināsies tikšanās ar Jānis Daugavietis :: Pētot Scēnu.
Jānis Daugavietis ir sociologs un pētnieks, kura uzmanības centrā jau kādu laiku ir t.s. Rīgas jaunā scēna. Pasākuma laikā viņš iezīmēs vairākus tematus un jautājumus, piemēram, kā mūzikas socioloģijā tiek lietots jēdziens "scēna", kā viņš to pēta, kā radās Rīgas jaunā scēna, vai pastāv atsevišķa krievu grupu scēna, kāda ir scēnas nākotne, u.t.t.
Pasākumu aicinām apmeklēt un aktīvi iesaistīties oponēšanā un diskusijā gan šodienas, gan pagātnes scēnu dalībniekus."
[Anotācija (publicētā). Arņa Balčus dizains un menedžments, kopā ar ISSP]
Thermomechanical Coating Load in Dependence of Fundamental Coating Properties
Creators: name: Beblein, S.
name: Breidenstein, Bernd
name: Denkena, Berend
name: Pusch, C.
name: Hoche, H.
name: Oechsner, M.
Publisher: name: Amsterdam : Elsevier BV
Year: 2017
Subjects: subject: Chip formation simulation
subject: Coating
subject: Machining
subject: Cutting tools
subject: Elastic moduli
subject: Friction
subject: Machining centers
subject: Thickness measurement
subject: Chip formations
subject: Coating development
subject: Cutting performance
subject: Experimental investigations
subject: Experimental parameters
subject: Friction coefficients
subject: Mechanical coatings
subject: Thermo mechanical loads
subject: Coatings
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The conventional development of a coating system for cutting tools includes a variety of test series with elaborate experimental parameter studies. In particular, experimental investigations of the cutting behavior cause a significant consumption of cost, time and resources. In order to adapt the coating properties to the specific requirements of the cutting process, it is desirable to reduce the experimental effort of coating development by simulation of the machining process. Therefore, the main factors of the thermo-mechanical coating load in machining AISI 4140 were identified by means of 2D FEM chip formation simulations. In order to provide the required thermal and mechanical coating properties for the simulations, CrAlN-based coatings were deposited onto cutting inserts and extensively characterized. Within the simulations, the coating properties were varied between the physical and technological boundaries of CrAlN-based coatings. It was shown that the Young's modulus, the coating thickness and the friction coefficient significantly influence the thermomechanical load and the stress distribution within the coating. Finally, the cutting performance of the coated inserts was experimentally investigated and compared with the results of the simulations. Here, it was shown that delamination of the coating is particularly influenced by coating thickness. © 2017 The Authors.
Magnetic flux paradigm for radio-loudness of AGN
Creators: name: Sikora, Marek
name: Begelman, Mitchell C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We argue that the magnetic flux threading the black hole, rather than black hole spin or Eddington ratio, is the dominant factor in launching powerful jets and thus determining the radio loudness of active galactic nuclei (AGN). Most AGN are radio quiet because the thin accretion disks that feed them are inefficient in depositing magnetic flux close to the black hole. Flux accumulation is more likely to occur during a hot accretion (or thick disk) phase, and we argue that radio-loud quasars and strong emission-line radio galaxies occur only when a massive, cold accretion event follows an episode of hot accretion. Such an event might be triggered by the merger of a giant elliptical galaxy with a disk galaxy. This picture supports the idea that flux accumulation can lead to the formation of a so-called magnetically choked accretion flow (MCAF). The large observed range in radio loudness reflects not only the magnitude of the flux pressed against the black hole, but also the decrease in UV flux from the disk, due to its disruption by the "magnetosphere" associated with the accumulated flux. While the strongest jets result from the secular accumulation of flux, moderate jet activity can also be triggered by fluctuations in the magnetic flux deposited by turbulent, hot inner regions of otherwise thin accretion disks, or by the dissipation of turbulent fields in accretion disk coronae. These processes could be responsible for jet production in Seyferts and low-luminosity AGN, as well as jets associated with X-ray binaries.
description: 5 pages, no figures, accepted for publication the The Astrophysical Journal Letters
System-integrated Intelligence – New Challenges for Product and Production Engineering in the Context of Industry
Creators: name: Thoben, Klaus-Dieter
name: Busse, Matthias
name: Denkena, Berend
name: Hausemeier, Jürgen
Publisher: name: Amsterdam : Elsevier
Year: 2014
Subjects: subject: cyber-physical systems
subject: intelligent systems
subject: logistics
subject: sensor integration
subject: micro system technology
subject: microelectronics
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The editorial introduces the SysInt conference series and the motivation behind it. It describes the structure and content as well as the scientific and technological background to the SysInt 2014 event held in Bremen from July 2nd-4th, 2014, and provides an outline of the organizing institutions, detailing their individual perspectives on the general topic of system-integrated intelligence.
Self-optimizing cutting process using learning process models
Creators: name: Denkena, Berend
name: Dittrich, Marc-André
name: Uhlich, Florian
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Process Planning
subject: Self-Optimization
subject: Machine Learning
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The continuous integration of manufacturing systems and sensory components leads to an increasing amount of available process data. In addition, new database systems and the parallelization of data processing enable to record and analyze these large amounts of process data. The continuous transformation of the obtained data into deployable machining knowledge hold out the perspective for faster ramp-ups, more reliable process outcome and higher profitability. By using the manufacturing data for extensive analyses, models can be derived to describe the effects of machining parameters and external conditions on the cutting result. To utilize the available process data for process planning and optimizing, the data has to be handled and interpreted appropriately and finally transferred into machining knowledge. This paper presents a method that uses a support vector machine as a machine learning approach to model the obtained process data. With a numerical optimization of the model, optimal process parameter can be determined, that minimize machining time and satisfy given boundary conditions. By modelling the process variance as well, the determined process parameters guarantee the process outcome within a freely selectable confidence interval. Through the complete automation of data capturing, data storing, modeling, optimizing and machining, a self-optimizing cutting process is achieved.
Luzula campestris L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. campestris L. Cat. 194. Var. sericea Fries-2: Follateres bei Branson (Thellung); Tassonnieres (P.); Tourbillon bei Sitten (Volkart). - 3:Charrat (F.). Var. alpüia DC. (A. camp. ssp. alpina Garns; non A. camp. alpina Jaccard Cat.) - 3: Randa (Huber); Zermatt (P.); Saas-Fee(Huber). - 4:Imfeld im Binntal (P.); Blindental (B. C.W.). Subvar. alpestris Gremli - 3: Zermatt (Christ, Beauverd). Subvar. confusa Gremli - 3: Findelen bei Zermatt (Beauverd). - 4: Binntal (Schmidely, Binz); Obergesteln (Beauverd). Subvar. straminea Beauverd - 3: Bei Zermatt (Beauverd, P.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Die Miniaturen und ihre Künstler. Kap. I: Die Flämischen Künstler und ihre Arbeiten
Creators: name: Biermann, Alfons W.
Publisher: name: Aachener Kunstblätter
Year: 2017

description: -
description: Aachener Kunstblätter, Bd. 46 (1975): Aachener Kunstblätter
System-Integrated Intelligence – New Challenges for Product and Production Engineering
Creators: name: Trächtler, Ansgar
name: Denkena, Berend
name: Thoben, Klaus-Dieter
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: cyber-physical systems
subject: intelligent systems
subject: logistics
subject: sensor integration
subject: micro system technology
subject: microelectronics
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: The editorial introduces the SysInt conference series and the motivation behind it. It describes the structures and content as well as the scientific and technological background to the SysInt 2016 event held in Paderborn from June 13th – 15th, 2016, and provides an outline of the organizing institutions, detailing their individual perspectives on the general topic of system-integrated intelligence.
Magellanic System Stars Identified in SMACS J0723.3-7327 James Webb Space Telescope Early Release Observations Images
Creators: name: Summers, Jake
name: Windhorst, Rogier A.
name: Cohen, Seth H.
name: Jansen, Rolf A.
name: Carleton, Timothy
name: Kamieneski, Patrick S.
name: Holwerda, Benne W.
name: Conselice, Christopher J.
name: Adams, Nathan J.
name: Frye, Brenda
name: Diego, Jose M.
name: Willmer, Christopher N. A.
name: Ortiz, Rafael
name: Cheng, Cheng
name: Pigarelli, Alex
name: Robotham, Aaron
name: D'Silva, Jordan C. J.
name: Tompkins, Scott
name: Driver, Simon P.
name: Yan, Haojing
name: Coe, Dan
name: Grogin, Norman
name: Koekemoer, Anton
name: Marshall, Madeline A.
name: Pirzkal, Nor
name: Ryan, Russell E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We identify 71 distant stars in JWST/NIRCam ERO images of the field of galaxy cluster SMACS J0723.3-7327 (SMACS 0723). Given the relatively small ($\sim$$10^{\circ}$) angular separation between SMACS 0723 and the Large Magellanic Cloud, it is likely that these stars are associated with the LMC outskirts or Leading Arm. This is further bolstered by a spectral energy distribution analysis, which suggests an excess of stars at a physical distance of $40-100$ kpc, consistent with being associated with or located behind the Magellanic system. In particular, we find that the overall surface density of stars brighter than 27.0 mag in the field of SMACS 0723 is $\sim$2.3 times that of stars in a blank field with similar galactic latitude (the North Ecliptic Pole Time Domain Field), and that the density of stars in the SMACS 0723 field with SED-derived distances consistent with the Magellanic system is $\sim$6.1 times larger than that of the blank field. The candidate stars at these distances are consistent with a stellar population at the same distance modulus with [Fe/H] $= -1.0$ and an age of $\sim$$5.0$ Gyr. On the assumption that all of the 71 stars are associated with the LMC, then the stellar density of the LMC at the location of the SMACS 0723 field is $\sim$$740$ stars kpc$^{-3}$, which helps trace the density of stars in the LMC outskirts.
description: Published in ApJ
Surface integrity of laser beam welded steel– aluminium alloy hybrid shafts after turning
Creators: name: Nothdurft, Sarah
name: Prasanthan, Vannila
name: Denkena, Berend
name: Breidenstein, Bernd
name: Grove, Thilo
name: Ohrdes, Hendrik
name: Twiefel, Jens
name: Wallaschek, Jörg
name: Hassel, Thomas
name: Hermsdorf, Jörg
name: Overmeyer, Ludger
name: Kaierle, Stefan
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: Dissimilar joint
subject: Hybrid shaft
subject: Laser beam welding
subject: Residual stresses
subject: Subsurface properties
subject: Surface integrity
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The demands for high-performance solid components are constantly increasing. The reason for this development are the steadily growing requirements such as weight reduction, higher resistance to load stresses, and more functional integration. By using material compounds, for example high-strength steel and aluminium alloy, hybrid massive components, whose properties are specially adapted to the specific application, can be manufactured. The first challenge is the joining of two dissimilar materials like steel and aluminium alloy by laser beam welding. In particular, the formation of hard and brittle intermetallic phases (IMP) has a high influence on the mechanical properties of the joining zone. The second challenge is to examine the machinability of such dissimilar compounds. The machining process is mandatory in order to reach an adequate level of accuracy of shape and dimensions. Furthermore, the functionalization of the hybrid compounds will be realized with the machining process where required surface roughness and lifetime-determining residual stresses are adjusted. Connections between induced residual stresses and material properties have been investigated. A significant influence of machining parameters on the surface and subsurface properties is evident. In particular, the cutting edge rounding has a deep impact on the residual stresses as well as on surface roughness.
Photogalvanic current in a double quantum well
Creators: name: Entin, M. V.
name: Magarill, L. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the in-plane stationary current caused by phototransitions between the states of a double quantum well. The electric polarization of light has both vertical and in-plane components. The stationary current originates from the periodic vibration of electrons between two non-equivalent quantum wells caused by the normal component of the alternating electric field with simultaneous in-plane acceleration/deceleration by the in-plane component of electric field. The quantum mechanism of the stationary current is conditioned by in-plane transition asymmetry which appears due to the indirect phototransitions with the participation of impurity scattering. The photocurrent has a resonant character corresponding to the equality of the photon energy to the distance between subbands. It is found that the current appears as a response to the linear-polarized light.
description: 6 pages, 2 figures
Episodic fluid venting from sedimentary basins fuelled by pressurised mudstones
Creators: name: Kearney, Luke M.
name: Katz, Richard F.
name: MacMinn, Christopher W.
name: Kirkham, Chris
name: Cartwright, Joe
Publisher: name: arXiv
Year: 2023
Subjects: subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: Subsurface sandstone reservoirs sealed by overlying, low-permeability layers provide capacity for long-term sequestration of anthropogenic waste. Leakage can occur if reservoir pressures rise sufficiently to fracture the seal. Such pressures can be generated within the reservoir by vigorous injection of waste or, over thousands of years, by natural processes. In either case, the precise role of intercalated mudstones in the long-term evolution of reservoir pressure remains unclear; these layers have variously been viewed as seals, as pressure sinks or as pressure sources. Here, we use the geological record of episodic fluid venting in the Levant Basin to provide striking evidence for the pressure-source hypothesis. We use a Bayesian framework to combine recently published venting data, which record critical subsurface pressures since $\sim$2~Ma, with a stochastic model of pressure evolution to infer a pressure-recharge rate of $\sim$30~MPa/Myr. To explain this large rate, we quantify and compare a range of candidate mechanisms. We find that poroelastic pressure diffusion from mudstones provides the most plausible explanation for these observations, amplifying the $\sim$3~MPa/Myr recharge caused primarily by tectonic compression. Since pressurised mudstones are ubiquitous in sedimentary basins, pressure diffusion from mudstones is likely to promote seal failure globally.
The osteogenic and tenogenic differentiation potential of C3H10T1/2 (mesenchymal stem cell model) cultured on PCL/PLA electrospun scaffolds in the absence of specific differentiation medium
Creators: name: Baudequin, Timothée
name: Gaut, Ludovic
name: Mueller, Marc
name: Huepkes, Angela
name: Glasmacher, Birgit
name: Duprez, Delphine
name: Bedoui, Fahmi
name: Legallais, Cécile
Publisher: name: Basel : MDPI AG
Year: 2017
Subjects: subject: Electrospinning
subject: Mesenchymal stem cell
subject: Polymer
subject: Scaffold
subject: Tissue engineering
subject: Cell culture
subject: Cell engineering
subject: Cells
subject: Cytology
subject: Fibers
subject: Gene expression
subject: Polycaprolactone
subject: Polymers
subject: Scaffolds
subject: Stem cells
subject: Tendons
subject: Cell differentiation
subject: Cell organization
subject: Culture conditions
subject: Electrospun fibers
subject: Electrospun scaffolds
subject: Osteogenic differentiation
subject: Possible futures
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The differentiation potential of mesenchymal stem cells (MSC) has been extensively tested on electrospun scaffolds. However, this potential is often assessed with lineage-specific medium, making it difficult to interpret the real contribution of the properties of the scaffold in the cell response. In this study, we analyzed the ability of different polycaprolactone/polylactic acid PCL/PLA electrospun scaffolds (pure or blended compositions, random or aligned fibers, various fiber diameters) to drive MSC towards bone or tendon lineages in the absence of specific differentiation medium. C3H10T1/2 cells (a mesenchymal stem cell model) were cultured on scaffolds for 96 h without differentiation factors. We performed a cross-analysis of the cell-scaffold interactions (spreading, organization, and specific gene expression) with mechanical (elasticity), morphological (porosity, fibers diameter and orientation) and surface (wettability) characterizations of the electrospun fibers. We concluded that (1) osteogenic differentiation can be initiated on pure PCL-based electrospun scaffolds without specific culture conditions; (2) fiber alignment modified cell organization in the short term and (3) PLA added to PCL with an increased fiber diameter encouraged the stem cells towards the tendon lineage without additional tenogenic factors. In summary, the differentiation potential of stem cells on adapted electrospun fibers could be achieved in factor-free medium, making possible future applications in clinically relevant situations.
Solid-state ensemble of highly entangled photon sources at rubidium atomic transitions
Creators: name: Keil, Robert
name: Zopf, Michael
name: Chen, Yan
name: Höfer, B.
name: Zhang, Jiaxiang
name: Ding, Fei
name: Schmidt, Oliver G.
Publisher: name: London : Nature Publishing Group
Year: 2017
Subjects: subject: droplet
subject: etching
subject: photon flux density
subject: quantum mechanics
subject: rubidium
subject: semiconductor industry
subject: wavelength
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Semiconductor InAs/GaAs quantum dots grown by the Stranski-Krastanov method are among the leading candidates for the deterministic generation of polarization-entangled photon pairs. Despite remarkable progress in the past 20 years, many challenges still remain for this material, such as the extremely low yield, the low degree of entanglement and the large wavelength distribution. Here, we show that with an emerging family of GaAs/AlGaAs quantum dots grown by droplet etching and nanohole infilling, it is possible to obtain a large ensemble of polarization-entangled photon emitters on a wafer without any post-growth tuning. Under pulsed resonant two-photon excitation, all measured quantum dots emit single pairs of entangled photons with ultra-high purity, high degree of entanglement and ultra-narrow wavelength distribution at rubidium transitions. Therefore, this material system is an attractive candidate for the realization of a solid-state quantum repeater - among many other key enabling quantum photonic elements. © The Author(s) 2017.