cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Ru on N‐doped Carbon for the Selective Hydrogenolysis of Sugars and Sugar Alcohols
Creators: name: Beine, Anna Katharina
name: Ludovicy, Jil
name: Chai, Jiachun
name: Hofmann, Jan P.
name: Glotzbach, Christoph
name: Hausoul, Peter J. C.
name: Palkovits, Regina
Publisher: name: Wiley-VCH
Year: 2022

description: Glycols are accessible via metal‐catalyzed hydrogenolysis of sugar alcohols such as xylitol obtained from hemicellulose. Ru‐based catalysts are highly active but also catalyze side‐reactions such as decarbonylation and deoxygenation. To achieve high selectivity, these reactions need to be suppressed. In our study, we introduce heteroatom doped carbon materials as catalyst supports providing high selectivity. Heteroatom doping with nitrogen and oxygen was achieved by treating activated carbon with HNO₃, NH₃ and H₂ or carbonization of organic precursors. For all N‐doped materials a high glycol selectivity of ∼ 80 % for sorbitol and xylitol and 44 % for xylose and glucose was reached. XPS analysis confirms the presence of different nitrogen species at the carbon surface and varying ligand effects for oxygen and nitrogen. Oxygen has an electron withdrawing effect on ruthenium and leads to a decreased activity. Nitrogen has weaker electron withdrawing properties, resulting in an enhanced selectivity.
Ultra low noise YBCO nanoSQUIDs implementing nanowires
Creators: name: Arpaia, Riccardo
name: Arzeo, Marco
name: Nawaz, Shahid
name: Charpentier, Sophie
name: Lombardi, Floriana
name: Bauch, Thilo
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present results on ultra low noise YBa$_2$Cu$_3$O$_{7-δ}$ nano Superconducting QUantum Interference Devices (nanoSQUIDs). To realize such devices, we implemented high quality YBCO nanowires, working as weak links between two electrodes. We observe critical current modulation as a function of an externally applied magnetic field in the full temperature range below the transition temperature $T_C$. The white flux noise below 1 $μΦ_0/\sqrt{\mathrm{Hz}}$ at T = 8 K makes our nanoSQUIDs very attractive for the detection of small spin systems.
description: 11 pages, 4 figures, submitted to Appl. Phys. Lett. 25/01/2014
Collective excitations of an imbalanced fermion gas in a 1D optical lattice
Creators: name: Mendoza, R.
name: Fortes, Mauricio
name: Solís, M. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: The collective excitations that minimize the Helmholtz free energy of a population-imbalanced mixture of a $^{6}$Li gas loaded in a quasi one-dimensional optical lattice are obtained. These excitations reveal a rotonic branch after solving the Bethe-Salpeter equation under a generalized random phase approximation based on a single-band Hubbard Hamiltonian. The phase diagram describing stability regions of Fulde-Farrell-Larkin-Ovchinnikov and Sarma phases is also analyzed.
description: Six pages and 3 figures
Prompt Detection of Fast Optical Bursts with the Vera C. Rubin Observatory
Creators: name: Homar, Guillem Megias
name: Meyers, Joshua E.
name: Kahn, Steven M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The transient optical sky has remained largely unexplored on very short timescales. While there have been some experiments searching for optical transients from minutes to years, none have had the capability to distinguish millisecond Fast Optical Bursts (FOB). Such very fast transients could be the optical counterparts of Fast Radio Bursts (FRB), the prompt emission from $γ$-Ray Bursts (GRB), or other previously unknown phenomena. Here, we investigate a novel approach to the serendipitous detection of FOBs, which relies on searching for anomalous spatial images. In particular, due to their short duration, the seeing distorted images of FOBs should look characteristically different than those of steady sources in a standard optical exposure of finite duration. We apply this idea to simulated observations with the Vera C. Rubin Observatory, produced by tracing individual photons through a turbulent atmosphere, and down through the optics and camera of the Rubin telescope. We compare these simulated images to steady-source star simulations in 15 s integrations, the nominal Rubin exposure time. We report the classification accuracy results of a Neural Network classifier for distinguishing FOBs from steady sources. From this classifier, we derive constraints in duration-intensity parameter space for unambiguously identifying FOBs in Rubin observations. We conclude with estimates of the total number of detections of FOB counterparts to FRBs expected during the 10-year Rubin Legacy Survey of Space and Time (LSST).
description: 7 pages, 4 figures, submitted to the Astrophysical Journal
Limosina luteilabris Rondani 1880
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Sphaeroceridae
Limosina
Limosina luteilabris

description: Limosina luteilabris Rondani, 1880
ORIGINAL DESCRIPTION: 1880: 22 (key), 34 (description).
TYPE LOCALITY: “ in colle et planitie ditionis parmensis [Parmese hill and plains (Italy)]”.
TYPE MATERIAL: 1 ♂, lectotype (MZUF: Box 37): Limosina Macq. / luteilabris m. / 1944 / Lectotypus Limosina luteilabris Rond., ♂, J. Roháček des. 1979.
PARALECTOTYPE EXAMINED: 1 ♂ (slightly moldy, double-mounted: fastened by a micro pin to a polyethylene foam block on a standard insect pin) (MZUF: Box 37): Limosina Macq. / luteilabris m. / 1944 / Paralectotypus Limosina luteilabris Rond., ♂, J. Roháček des. 1979.
PARALECTOTYPE NOT EXAMINED: 1 ♂ (double-mounted: fastened by a micro pin to a polyethylene foam block on a standard insect pin) (MZUF: Box 37): Limosina Macq. / luteilabris m. / 1944 / Limosina rufilabris Stenh., ♂, J. Roháček des. 1979.
CURRENT STATUS: valid species (Papp 1984d: 100); valid species, as Spelobia luteilabris (Roháček 1983: 87, Canzoneri et al. 1995: 24, Roháček et al. 2001a: 259, Marshall et al. 2011: 277).
REMARKS: Rondani (1880: 34) described Limosina luteilabris without specifying either the number or the sex of the specimens, but giving a single measurement of length: “ Specimina pauca Sp. vidi [I observed a few specimens of this species]”. Roháček (1983: 87) designated a lectotype (♂) and paralectotype (♂) but did not mention an additional MZUF male numbered “1944” (this additional specimen is a paralectotype).
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 227, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Continuous-variable dense coding by optomechanical cavities
Creators: name: Barzanjeh, Shabir
name: Pirandola, Stefano
name: Weedbrook, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, we show how continuous-variable dense coding can be implemented using entangled light generated from a membrane-in-the-middle geometry. The mechanical resonator is assumed to be a high reflectivity membrane hung inside a high quality factor cavity. We show that the mechanical resonator is able to generate an amount of entanglement between the optical modes at the output of the cavity, which is strong enough to approach the capacity of quantum dense coding at small photon numbers. The suboptimal rate reachable by our optomechanical protocol is high enough to outperform the classical capacity of the noiseless quantum channel.
The infrared K-band identification of the DSO/G2 source from VLT and Keck data
Creators: name: Eckart, Andreas
name: Horrobin, M.
name: Britzen, S.
name: Zamaninasab, M.
name: Muzic, K.
name: Sabha, N.
name: Shahzamanian, B.
name: Yazici, S.
name: Moser, L.
name: Garcia-Mari, M.
name: Valencia-S., M.
name: Borkar, A.
name: Bursa, M.
name: Karssen, G.
name: Karas, V.
name: Zajacek, M.
name: Bronfman, L.
name: Finger, R.
name: Jalali, B.
name: Vitale, M.
name: Rauch, C.
name: Kunneriath, D.
name: Moultaka, J.
name: Straubmeier, C.
name: Rashed, Y. E.
name: Markakis, K.
name: Zensus, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: A fast moving infrared excess source (G2) which is widely interpreted as a core-less gas and dust cloud approaches Sagittarius A* (SgrA*) on a presumably elliptical orbit. VLT K_s-band and Keck K'-band data result in clear continuum identifications and proper motions of this about 19m Dusty S-cluster Object (DSO). In 2002-2007 it is confused with the star S63, but free of confusion again since 2007. Its near-infrared (NIR) colors and a comparison to other sources in the field speak in favor of the DSO being an IR excess star with photospheric continuum emission at 2 microns than a core-less gas and dust cloud. We also find very compact L'-band emission ($
description: 4 pages, 2 figures, Proc. of a Conf. on IAU Symposium No.303: The GC: Feeding and Feedback in a Normal Galactic Nucleus 2013 September 30 - October 4, Santa Fe New Mexico (USA)
Strategic Designs for Online Platforms
Creators: name: Wang, Weilong
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Information systems for sustainable development and the public good
Information systems user experience design and development
Econometric and statistical methods
Cross-sectional analysis
Panel data analysis

description: Platforms are now everywhere in our society. Some platforms share real-time information such that people can refer to many aspects, i.e., transportation, weather, news, etc. For example, online learning platforms can play a significant role in accelerating learning through things like providing more real-time feedback loops. Due to the recent innovation in mobile devices as well as faster networks, live streaming platforms become a new trend. Several usages of live streaming platforms are gaming experience sharing such as Twitch, or shopping experience like Amazon Live. My dissertation studies the strategic designs of different online platforms, especially how information affects users’ strategic behaviors and how it creates
 different market outcomes.
Women Writers and Samuel Richardson: Novel Criticism in the Mid-Eighteenth Century
Creators: name: Biggin, Crystal
Publisher: name: University of Leicester
Year: 2022
Subjects: Uncategorized

description: In the mid-eighteenth century, women writers participated in dynamic and innovative criticism about the novel form in print and in manuscript. Drawing on letters, pamphlets, periodicals and the novels themselves, this thesis explores such ‘novel’ criticism, with a focus on the relationships that women writers had with Samuel Richardson at the height of his fame as an epistolary novelist between 1749 and 1754. Some of these women were published authors themselves, such as Sarah Fielding, Jane Collier, and Eliza Haywood, whereas others like Dorothy, Lady Bradshaigh and Sarah Wescomb Scudamore had lengthy correspondences with Richardson. While scholars have previously investigated Richardson’s relationships with women writers, the emphasis has been on his role as literary mentor. Yet, the complexities of these women’s relationships with Richardson – as a master printer, as a prolix correspondent, and as a successful novelist – repay closer examination.This thesis, incorporating new evidence about the London print trade and Richardson’s archived correspondence, is attentive to how the materiality of texts affects meaning and illuminates debates about the mid-century novel form and its reception history. It adds to recent scholarship about script and print as co-existing technologies by arguing for the fluidity of print and manuscript mediums for novel criticism between the published endings of Clarissa and Sir Charles Grandison. The texts discussed include Remarks on Clarissa, responses to Grandison, and novels such as The Invisible Spy, The Cry, and Love-Letters between a Nobleman and his Sister. By looking back to critical traditions from the seventeenth century, as well as forwards to the establishment of reviewing periodicals and the emergence of the professional woman critic by the end of the eighteenth century, this thesis reconstructs the elusive contexts we need in order to appreciate the contributions – often anonymous, hidden, and subtle – made by mid-century women writers as novel critics.
Lie group analysis of a generalized Krichever-Novikov differential-difference equation
Creators: name: Levi, Decio
name: Ricca, Eugenio
name: Thomova, Zora
name: Winternitz, Pavel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Group Theory (math.GR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The symmetry algebra of the differential--difference equation $$\dot u_n = [P(u_n)u_{n+1}u_{n-1} + Q(u_n)(u_{n+1}+u_{n-1})+ R(u_n)]/(u_{n+1}-u_{n-1}),$$ where $P$, $Q$ and $R$ are arbitrary analytic functions is shown to have the dimension $1 \le \mbox{dim}L \le 5$. When $P$, $Q$ and $R$ are specific second order polynomials in $u_n$ (depending on 6 constants) this is the integrable discretization of the Krichever--Novikov equation. We find 3 cases when the arbitrary functions are not polynomials and the symmetry algebra satisfies $\mbox{dim}L=2$. These cases are shown not to be integrable. The symmetry algebras are used to reduce the equations to purely difference ones. The symmetry group is also used to impose periodicity $u_{n+N}=u_n$ and thus to reduce the differential--difference equation to a system of $N$ coupled ordinary three points difference equations.
title: Mechanistic Understanding and Three‐Dimensional Tuning of Fluid Imbibition in Silica‐Coated Cotton Linter Paper Sheets
Creators: name: Mikolei, Joanna J.
name: Neuenfeld, Lukas
name: Paech, Steffen
name: Langhans, Markus
name: Biesalski, Markus
name: Meckel, Tobias
name: Andrieu‐Brunsen, Annette
Publisher: name: Wiley-VCH
Year: 2022

description: Paper‐based microfluidic devices are used in point of care diagnostic, sensor technology or lab‐on‐a‐chip devices. Although a number of studies has been reported, only relatively few paper‐based diagnostic tools are available on the market. A remaining challenge is the mechanistic understanding and precise design of capillary flow in paper. Here, silica coatings are applied to control paper wettability, fiber swelling, and thus fluid transport in all three dimensions of a paper sheet via a simple dip‐coating and post‐treatment process. By adjusting the three‐dimensional silica coating distribution, a three‐dimensional asymmetric wettability gradient within the paper sheet is obtained which controls the fluid distribution and imbibition. The correlation between silica coating amount and silica distribution with the resulting fluid behavior is systematically elaborated by analyzing the interaction between fiber and fluid as well as the fiber swelling by applying confocal microscopy. Three different silica‐amount dependent fluid distribution states are demonstrated. These new insights into the mechanism of fluid imbibition using simple silica coatings enable the specific design of different imbibition mechanisms and thus the adjustment of the microfluidic properties in paper‐based microfluidic devices with control over all three spatial dimensions of a paper sheet in one fabrication step.
Coupling of magnetism and Dirac fermions in YbMnSb2
Creators: name: Hu, Xiao
name: Sapkota, Aashish
name: Hu, Zhixiang
name: Savici, Andrei T.
name: Kolesnikov, Alexander I.
name: Tranquada, John M.
name: Petrovic, Cedomir
name: Zaliznyak, Igor A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report inelastic neutron scattering measurements of magnetic excitations in YbMnSb2, a low-carrier-density Dirac semimetal in which the antiferromagnetic Mn layers are interleaved with Sb layers that host Dirac fermions. We observe a considerable broadening of spin waves, which is consistent with substantial spin fermion coupling. The spin wave damping, $γ$, in YbMnSb2 is roughly twice larger compared to that in a sister material, YbMnBi2, where an indication of a small damping consistent with theoretical analysis of the spin-fermion coupling was reported. The inter-plane interaction between the Mn layers in YbMnSb2 is also much stronger, suggesting that the interaction mechanism is rooted in the same spin-fermion coupling. Our results establish the systematics of spin-fermion interactions in layered magnetic Dirac materials.
"Viaje a la semilla" de Alejo Carpentier. Píldora audiovisual
Creators: name: Jiménez, Francisca Noguerol
name: García, José Antonio Paniagua
name: Vidal, Borja Cano
name: Elvira-Navarro, Andrea
name: Sánchez-Aparicio, Vega
Publisher: name: Zenodo
Year: 2022

description: Material docente elaborado en el seno del proyecto de Innovación Docente «Elaboración de píldoras audiovisuales para la enseñanza de la literatura hispanoamericana» (ID2021/076) concedido en la Universidad de Salamanca durante el curso académico 2021/2022.
title: Microstructure and conductivity of blacklight‐sintered TiO₂, YSZ, and Li₀.₃₃La₀.₅₇TiO₃
Creators: name: Porz, Lukas
name: Scherer, Michael
name: Muhammad, Qaisar Khushi
name: Higuchi, Kimitaka
name: Li, Yan
name: Koga, Shuhei
name: Nakamura, Atsutomo
name: Rheinheimer, Wolfgang
name: Frömling, Till
Publisher: name: Wiley
Year: 2022

description: Rapid densification of ceramics has been realized and its merits were demonstrated through multiple approaches out of which UHS and flash sintering attract recent attention. So far, however, scalability remains difficult. A rise in throughput and scalability is enabled by the introduction of blacklight sintering powered by novel light source technology. Intense illumination with photon energy above the bandgap (blacklight) allows high absorption efficiency and, hence, very rapid, contactless heating for all ceramics. While heating the ceramic directly with light without any furnace promises scalability, it simultaneously offers highly accurate process control. For the technology transfer to industry, attainable material quality needs to be assured. Here, we demonstrate the excellent microstructure quality of blacklight‐sintered ceramics observed with ultrahigh voltage electron microscopy revealing an option to tune nanoporosity. Moreover, we confirm that electronic, electron, oxygen, and lithium‐ion conductivities are equal to conventionally sintered ceramics. This gives the prospect of transmitting the merits of rapid densification to the scale of industrial kilns.
Long range interaction coefficients for ytterbium dimers
Creators: name: Porsev, S. G.
name: Safronova, M. S.
name: Derevianko, A.
name: Clark, Charles W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We evaluate the electric-dipole and electric-quadrupole static and dynamic polarizabilities for the 6s^2 ^1S_0, 6s6p ^3P_0, and 6s6p ^3P_1 states and estimate their uncertainties. A methodology is developed for an accurate evaluation of the van der Waals coefficients of dimers involving excited state atoms with strong decay channel to the ground state. This method is used for evaluation of the long range interaction coefficients of particular experimental interest, including the C_6 coefficients for the Yb-Yb ^1S_0+^3P_{0,1} and ^3P_0+^3P_0 dimers and C_8 coefficients for the ^1S_0+^1S_0 and ^1S_0+^3P_1 dimers.
description: 11 pages, 1 figure
Search for Stable Magnetohydrodynamic Equilibria in Barotropic Stars
Creators: name: Mitchell, J. P.
name: Braithwaite, J.
name: Langer, N.
name: Reisenegger, A.
name: Spruit, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It is now believed that magnetohydrodynamic equilibria can exist in stably stratified stars due to the seminal works of Braithwaite & Spruit (2004) and Braithwaite & Nordlund (2006). What is still not known is whether magnetohydrodynamic equilibria can exist in a barotropic star, in which stable stratification is not present. It has been conjectured by Reisenegger (2009) that there will likely not exist any magnetohydrodynamical equilibria in barotropic stars. We aim to test this claim by presenting preliminary MHD simulations of barotropic stars using the three dimensional stagger code of Nordlund & Galsgaard (1995).
description: 4 pages, 2 figures, to appear in the proceedings of IAUS 302: "Magnetic Fields Throughout Stellar Evolution"
Eumerus barbiventris Rondani 1850
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Eumerus
Eumerus barbiventris

description: Eumerus barbiventris Rondani, 1850
ORIGINAL DESCRIPTION: 1850a: 120 (key), 124 (description).
TYPE LOCALITY: “ in Italiae centralis collibus [hills in central Italy]”.
TYPE MATERIAL: 3 ♂♂, syntypes (one covered with mold) (MZUF: Box 4): Eumerus Mgn / barbiventris Rnd., analis Oliv., ♂ / 133; 4 ♀♀, syntypes (MZUF: Box 4): Eumerus Mgn barbiventris Rnd., ♀ / 133; 1 ♂, syntype (MZUF: Box A): Eumerus barbiventris R., 44, Apenn. [= Apennines] / 393 44; 1 ♂, syntype (MRSN: Box 53): Parma / Eumerus barbiventris Rond. / Museo di Zoologia della Università di Torino; 1 ♂, syntype (MSNC: Box DIPTERA Ex collezione Rondani - I): Merodon barbiventris Rnd. ♂ Apenn. [= Apennines] / Coll. Rondani, scatola n° 3, posiz. D-13 / Museo di Storia Naturale Università di Pisa, Calci (PI) ex collezione Rondani; 1 ♀, syntype (MZUB: Box 320): 20 26 / Eumerus barbiventris Rond., ex a. parmensi / barbiventris Rndn., ♀, Parma.
CURRENT STATUS: junior synonym of Eumerus ruficornis Meigen, 1822 (Peck 1988: 161, Belcari et al. 1995a: 16).
REMARKS: Rondani (1850a: 124) described both sexes of Eumerus barbiventris without specifying the exact number of specimens and not giving a range of lengths, but presumably from more than one specimen because he wrote: “ non rarus [not rare]”. We found 11 syntypes in this study.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 248, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Size of dot product sets determined by pairs of subsets of vector spaces over finite fields
Creators: name: Koh, Doowon
name: Pi, Youngjin
Publisher: name: arXiv
Year: 2014
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary:52C10, Secondary 11T23

description: In this paper we study the cardinality of the dot product set generated by two subsets of vector spaces over finite fields. We notice that the results on the dot product problems for one set can be simply extended to two sets. Let E and F be subsets of the d-dimensional vector space F_q^d over a finite field F_q with q elements. As a new result, we prove that if E and F are subsets of the paraboloid and |E||F|\geq C q^d for some large C>1, then |Π(E,F)|\geq c q for some 0
description: 11 pages
Recursion in the classical limit and the neutron-star Compton amplitude
Creators: name: Haddad, Kays
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the compatibility of recursive techniques with the classical limit of scattering amplitudes through the construction of the classical Compton amplitude for general spinning compact objects. This is done using BCFW recursion on three-point amplitudes expressed in terms of the classical spin vector and tensor, and expanded to next-to-leading-order in $\hbar$ by using the heavy on-shell spinors. Matching to the result of classical computations, we find that lower-point quantum contributions are, in general, required for the recursive construction of classical, spinning, higher-point amplitudes with massive propagators. We are thus led to conclude that BCFW recursion and the classical limit do not commute. In possession of the classical Compton amplitude, we remove non-localities to all orders in spin for opposite graviton helicities, and to fifth order in the same-helicity case. Finally, all possible on-shell contact terms potentially relevant to black-hole scattering at the second post-Minkowskian order are enumerated and written explicitly.
description: 25 pages + appendices, 1 figure, 4 tables
title: Impedance boundary conditions for acoustic time‐harmonic wave propagation in viscous gases in two dimensions
Creators: name: Schmidt, Kersten
name: Thöns‐Zueva, Anastasia
Publisher: name: John Wiley & Sons
Year: 2022

description: We present impedance boundary conditions for the viscoacoustic equations for approximative models that are in terms of the acoustic pressure or in terms of the macroscropic acoustic velocity. The approximative models are derived by the method of multiple scales up to order 2 in the boundary layer thickness. The boundary conditions are stable and asymptotically exact, which is justified by a complete mathematical analysis. The models can be discretized by finite element methods without resolving boundary layers. In difference to an approximation by asymptotic expansion for which for each order 1 PDE system has to be solved, the proposed approximative are solutions to one PDE system only. The impedance boundary conditions for the pressure of first and second orders are of Wentzell type and include a second tangential derivative of the pressure proportional to the square root of the viscosity and take thereby absorption inside the viscosity boundary layer of the underlying velocity into account. The conditions of second order incorporate with curvature the geometrical properties of the wall. The velocity approximations are described by Helmholtz‐like equations for the velocity, where the Laplace operator is replaced by ∇div, and the local boundary conditions relate the normal velocity component to its divergence. The velocity approximations are for the so‐called far field and do not exhibit a boundary layer. Including a boundary corrector, the so‐called near field, the velocity approximation is accurate even up to the domain boundary. The results of numerical experiments illustrate the theoretical foundations.
Intrinsic Colors, Temperatures, and Bolometric Corrections of Pre-Main Sequence Stars
Creators: name: Pecaut, Mark J.
name: Mamajek, Eric E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present an analysis of the intrinsic colors and temperatures of 5-30 Myr old pre-main sequence (pre-MS) stars using the F0 through M9 type members of nearby, negligibly reddened groups: Eta Cha cluster, TW Hydra Association, Beta Pic Moving Group, and Tucana-Horologium Association. To check the consistency of spectral types from the literature, we estimate new spectral types for 52 nearby pre-MS stars with spectral types F3 through M4 using optical spectra taken with the SMARTS 1.5-m telescope. Combining these new types with published spectral types, and photometry from the literature (Johnson-Cousins BVIc, 2MASS JHKs and WISE W1, W2, W3, and W4), we derive a new empirical spectral type-color sequence for 5-30 Myr old pre-MS stars. Colors for pre-MS stars match dwarf colors for some spectral types and colors, but for other spectral types and colors, deviations can exceed 0.3 mag. We estimate effective temperatures (Teff) and bolometric corrections (BCs) for our pre-MS star sample through comparing their photometry to synthetic photometry generated using the BT-Settl grid of model atmosphere spectra. We derive a new Teff and BC scale for pre-MS stars, which should be a more appropriate match for T Tauri stars than often-adopted dwarf star scales. While our new Teff scale for pre-MS stars is within ~100 K of dwarfs at a given spectral type for stars
description: Accepted for publication in ApJ. 33 pages, 11 figures, 10 tables. Electronic tables available at http://rumtph.org/pecaut/pre_ms_colors/
title: A Multi‐Functional Separator for Li‐S Batteries: WS₂@C Nanoflowers Catalyze the Rapid Recycling of Lithium Polysulfides by Polar Attraction
Creators: name: Xie, Fanxuan
name: Xiong, Man
name: Liu, Jiapeng
name: Qian, Jingwen
name: Mei, Tao
name: Li, Jinghua
name: Wang, Jianyin
name: Yu, Li
name: Hofmann, Jan P.
name: Wang, Xianbao
Publisher: name: Wiley-VCH
Year: 2022

description: Featuring high theoretical capacity, environmental friendliness and low cost, lithium‐sulfur (Li‐S) batteries become promising alternatives to satisfy the growing demand for energy storage. To boost their energy density for practical application, modified separators are needed to suppress shuttle effects resulting from the solubility of lithium polysulfides (LiPSs). Herein, we modified traditional polypropylene (PP) separators with functional WS₂@C nanoflower composites (WS₂@C‐PP). They can effectively adsorb LiPSs and catalyze their conversion on the edge sites of the WS₂. Also, the unique construction of a carbon layer coating on the WS₂ nanoflowers combines active sites and conducting properties. The material benefits the reversibility of redox reactions and reutilization of active materials. With the WS₂@C‐PP separator, the cell displays improved cycling stability and rate performance. When cycling at 0.1 C, the cell discharges a capacity of up to 1475 mAh g⁻¹, and it contributes 943 mAh g⁻¹ originally at 1 C, with a decay rate of only 0.07 % after 500 cycles. Our work highlights the potential of functional separators to advance the properties of Li‐S batteries.
title: Reaction Kinetics of an Industrial Front‐End Acetylene Hydrogenation Catalyst Using the Advanced TEMKIN Reactor
Creators: name: Hock, Sebastian
name: Iser, Leonhard
name: Lucas, Martin
name: Rose, Marcus
Publisher: name: Wiley-VCH
Year: 2022

description: The front‐end process integration of the selective acetylene hydrogenation provides several advantages over the tail‐end option. But extensive knowledge of the process and reaction kinetics are required. This work combines the ideal conditions of the advanced TEMKIN reactor in a laboratory plant for gradient‐free kinetic analysis of eggshell catalyst under industrially relevant front‐end conditions. With this system an industrial state of the art Pd‐Ag/Al₂O₃ eggshell catalyst is investigated and the temperature dependent data under various feed compositions including information on the formation of C₄‐species are reported.
A Non-Iterative Transformation Method for Newton's Free Boundary Problem
Creators: name: Fazio, Riccardo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65L10, 34B15, 65L08

description: In book II of Newton's "Principia Mathematica" of 1687 several applicative problems are introduced and solved. There, we can find the formulation of the first calculus of variations problem that leads to the first free boundary problem of history. The general calculus of variations problem is concerned with the optimal shape design for the motion of projectiles subject to air resistance. Here, for Newton's optimal nose cone free boundary problem, we define a non-iterative initial value method which is referred in literature as transformation method. To define this method we apply invariance properties of Newton's free boundary problem under a scaling group of point transformations. Finally, we compare our non-iterative numerical results with those available in literature and obtained via an iterative shooting method. We emphasize that our non-iterative method is faster than shooting or collocation methods and does not need any preliminary computation to test the target function as the iterative method or even provide any initial iterate. Moreover, applying Buckingham Pi-Theorem we get the functional relation between the unknown free boundary and the nose cone radius and height.
description: 17 pages, 4 figures, 2 tables
title: On the Impact of Additive Manufacturing Processes on the Microstructure and Magnetic Properties of Co–Ni–Ga Shape Memory Heusler Alloys
Creators: name: Scheibel, Franziska
name: Lauhoff, Christian
name: Riegg, Stefan
name: Krooß, Philipp
name: Bruder, Enrico
name: Adabifiroozjaei, Esmaeil
name: Molina-Luna, Leopoldo
name: Böhm, Stefan
name: Chumlyakov, Yury I.
name: Niendorf, Thomas
name: Gutfleisch, Oliver
Publisher: name: Wiley-VCH
Year: 2022

description: Microstructure design allows to prevent intergranular cracking and premature failure in Co–Ni–Ga shape memory alloys. Favorable grain boundary configurations are established using additive manufacturing techniques, namely, direct energy deposition (DED) and laser powder bed fusion (L‐PBF). L‐PBF allows to establish a columnar grain structure. In the Co–Ni–Ga alloy processed by DED, a microstructure with strong ⟨001⟩ texture is obtained. In line with optimized microstructures, the general transformation behavior is essential for performance. Transition parameters such as transition temperature and thermal hysteresis depend on chemical composition, homogeneity, and presence of precipitates. However, these parameters are highly dependent on the processing method used. Herein, the first‐order magnetostructural transformation and magnetization properties of Co–Ni–Ga processed by DED and L‐PBF are compared with single‐crystalline and as‐cast material. In the alloy processed by L‐PBF, Ga evaporation and extensive formation of the ferromagnetic Co‐rich γ'‐phase are observed, promoting a very wide transformation range and large thermal hysteresis. In comparison, following DED, the material is characterized by minor chemical inhomogeneity and transition and magnetization behavior being similar to that of a single crystal. This clearly renders DED‐processed Co–Ni–Ga to become a promising candidate material for future shape memory applications.
On the N=2 superconformal index and eigenfunctions of the elliptic RS model
Creators: name: Razamat, Shlomo S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We define an infinite sequence of superconformal indices, I_n, generalizing the Schur index for N=2 theories. For theories of class S we then suggest a recursive technique to completely determine I_n. The information encoded in the sequence of indices is equivalent to the N=2 superconformal index depending on the maximal set of fugacities. Mathematically, the procedure suggested in this note provides a perturbative algorithm for computing a set of eigenfunctions of the elliptic Ruijsenaars-Schneider model.
description: 21 pages, harvmac. v2: added references
Merodon pudicus Rondani 1857
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Syrphidae
Merodon
Merodon pudicus

description: Merodon pudicus Rondani, 1857
ORIGINAL DESCRIPTION: 1857: 52 (key), 56 (description).
TYPE LOCALITY: “ in Pedemontio [Piedmont (Italy)]”.
TYPE MATERIAL: 1 ♂, holotype (head and thorax mostly eaten by dermestids, missing hind-legs, two abdominal tergites in a microvial pinned below specimen, missing terminalia) (MZUF: Box 2): Merodon Fb. Latr. / pudicus Bellardi, Alpi / 58 / Merodon indet.
CURRENT STATUS: junior synonym of Merodon cinereus (Fabricius, 1794) (Peck 1988: 168, Belcari et al. 1995a: 16, Sommaggio 2007: 123).
REMARKS: Rondani (1857: 56) described Merodon pudicus from a single male: “ lecta a Prof. Bellardi a quo exemplar masculum obtinui [collected by Prof. Bellardi from whom I obtained a male specimen].
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 257, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
On the mechanical stability of asymptotically flat black holes with minimally coupled scalar hair
Creators: name: Anabalon, Andres
name: Deruelle, Nathalie
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the asymptotically flat hairy black holes, solutions of the Einstein field equations minimally coupled to a scalar field, previously discovered by one of us, present mode instability against linear radial perturbations. It is also shown that the number of unstable modes is finite and their frequencies can be made arbitrarily small.
description: 11 pages, 6 figures, one reference fixed
Existence of global symmetries of divergence-free fields with first integrals
Creators: name: Perrella, David
name: Duignan, Nathan
name: Pfefferlé, David
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53Z05, 37C86, 58A30

description: The relationship between symmetry fields and first integrals of divergence-free vector fields is explored in three dimensions in light of its relevance to plasma physics and magnetic confinement fusion. A Noether-type Theorem is known: for each such symmetry, there corresponds a first integral. The extent to which the converse is true is investigated. In doing so, a reformulation of this Noether-type Theorem is found for which the converse holds on what is called the toroidal region. Some consequences of the methods presented are quick proofs of the existence of flux coordinates for magnetic fields in high generality; without needing to assume a symmetry such as in the cases of magneto-hydrostatics (MHS) or quasi-symmetry.
description: 31 pages, 3 figures. This version of the article features an example involving Reeb cylinders whose idea was suggested by Daniel Peralta-Salas
Volucella plorans Rondani 1848
Creators: name: Sforzi, Alessandra
name: Sommaggio, Daniele
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bombyliidae
Volucella
Volucella plorans

description: Volucella plorans Rondani, 1848
ORIGINAL DESCRIPTION: 1848b: 65.
TYPE LOCALITY: “ Brasile [Brazil]” (Rondani 1848b: 63); [Belem (Pará), Brazil] (Papavero 1973: 343). See Remarks.
TYPE MATERIAL: 1 ♀, syntype (not a male as given in the description) (covered with mold) (MZUN: Box Coll. entomol. extra, Fam. Sirfidei - Gen. Aphritis a Phalacromya): Volucella plorans Rnd., Brasile / M. Zool. N° 11217 / ♀.
CURRENT STATUS: valid species, as Copestylum plorans (Thompson et al. 1976: 82).
REMARKS: Rondani (1848b: 65) described Volucella plorans from just the male sex without specifying the exact number of the specimens, but giving a single measurement of length, from material collected in South America by V. Ghiliani. Costa (1866: 31) listed a single MZUN specimen numbered “612”. We also found one syntype in this study.Although Rondani (1848b: 63) only gave the type locality as “ Brasile ”, Papavero (1973: 343) gave a more accurate type locality based on a note in Spinola (1853) that said all specimens collected by Ghiliani in 1846 were collected in Belem, Pará, Brazil.
description: Published as part of Sforzi, Alessandra & Sommaggio, Daniele, 2021, Catalog of the Diptera types described by Camillo Rondani, pp. 1-438 in Zootaxa 4989 (1) on page 275, DOI: 10.11646/zootaxa.4989.1.1, http://zenodo.org/record/4980621
Can observations of 511 keV line from the M31 galaxy shed light on the AGN jet composition?
Creators: name: Nizamov, B. A.
name: Pshirkov, M. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Positron annihilation line at 511~keV is a known component of the gamma-ray diffuse emission. It is believed to be produced in the Galaxy, but there could be possible extragalactic contribution as well. E.g., positrons can be produced in jets of active galactic nuclei (AGN) and after that accumulate and gradually annihilate in hot gaseous halos around galaxies. In this work we test this hypothesis in application to an individual object -- the Andromeda galaxy (M31) which is close and has a supermassive black hole in its center, which powered an AGN before. We compute the growth history of the supermassive black hole in M31, relate it to the evolution of jet luminosity and estimate the positron content in its halo. We calculate the 511~keV photon flux due to positron annihilation which should be observed at Earth and find the value of around $10^{-4}$ photon cm$^{-2}$s$^{-1}$. It is very close to the observational limits ($<10^{-4}$photon cm$^{-2}$s$^{-1}$) set by the INTEGRAL/SPI in the assumption of the point source, so further observations would be able to constrain leptonic models of the jets and propagation of cosmic rays in the circumgalactic medium of large spiral galaxies.
description: 9 pages, 4 figures. Accepted to Astronomy Letters
title: Local governance of critical infrastructure resilience: Types of coordination in German cities
Creators: name: Knodt, Michèle
name: Fraune, Cornelia
name: Engel, Alice
Publisher: name: John Wiley & Sons
Year: 2022

description: The resilience of critical infrastructures in cities is key to being prepared for future crises. The challenge of enhancing critical infrastructure resilience addresses a multitude of actors. However, we lack conceptual, as well as empirical, understanding of how these different actors are coordinated. Therefore, this contribution asks how the different actors involved in critical infrastructure governance are coordinated at the local level. With the help of a typology of network governance coordination (political leadership, mutual exchange, and positive coordination), we look at the critical infrastructure crisis management in major German cities based on survey data with the scenario of a long‐lasting, supraregional power outage. The results show that political leadership coordination, as a unilateral and information‐based way of addressing public and private actors, is the dominant type. Only a quarter of the cities have chosen measures of mutual exchange coordination based on the consultation in an ad hoc manner. Measures of positive coordination where institutionalized joint planning is central are taken up only by a minority of German cities. Assuming that positive coordination is particularly important in dealing with unexpected events, positive coordination emerges as the missing piece of the resilience puzzle for many German cities.
CXOGBS~J173620.2--293338: A Candidate Symbiotic X-ray Binary Associated with a Bulge Carbon Star
Creators: name: Hynes, R. I.
name: Torres, M. A. P.
name: Heinke, C. O.
name: Maccarone, T. J.
name: Mikles, V. J.
name: Britt, C. T.
name: Knigge, C.
name: Greiss, S.
name: Jonker, P. G.
name: Steeghs, D.
name: Nelemans, G.
name: Bandyopadhyay, R. M.
name: Johnson, C. B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Galactic Bulge Survey is a wide but shallow X-ray survey of regions above and below the Plane in the Galactic Bulge. It was performed using the Chandra X-ray Observatory's ACIS camera. The survey is primarily designed to find and classify low luminosity X-ray binaries. The combination of the X-ray depth of the survey and the accessibility of optical and infrared counterparts makes this survey ideally suited to identification of new symbiotic X-ray binaries in the Bulge. We consider the specific case of the X-ray source CXOGBS J173620.2-293338. It is coincident to within 1 arcsec with a very red star, showing a carbon star spectrum and irregular variability in the Optical Gravitational Lensing Experiment data. We classify the star as a late C-R type carbon star based on its spectral features, photometric properties, and variability characteristics, although a low-luminosity C-N type cannot be ruled out. The brightness of the star implies it is located in the Bulge, and its photometric properties overall are consistent with the Bulge carbon star population. Given the rarity of carbon stars in the Bulge, we estimate the probability of such a close chance alignment of any Galactic Bulge Survey source with a carbon star to be <1e-3 suggesting that this is likely to be a real match. If the X-ray source is indeed associated with the carbon star, then the X-ray luminosity is around 9e32 erg/s. Its characteristics are consistent with a low luminosity symbiotic X-ray binary, or possibly a low accretion rate white dwarf symbiotic.
description: Accepted for publication in the Astrophysical Journal
title: MONA — A magnetic oriented nodal analysis for electric circuits
Creators: name: Shashkov, Vsevolod
name: Cortes Garcia, Idoia
name: Egger, Herbert
Publisher: name: John Wiley & Sons
Year: 2022

description: The modified nodal analysis (MNA) is probably the most widely used formulation for the modeling and simulation of electric circuits. Its conventional form uses electric node potentials and currents across inductors and voltage sources as unknowns, thus taking an electric viewpoint. In this paper, we propose an alternative magnetic oriented nodal analysis (MONA) for electric circuits, which is based on magnetic node potentials and charges across capacitors and voltage sources as the primary degrees of freedom, thus giving direct access to these quantities. The resulting system has the structure of a generalized gradient system which immediately ensures passivity in the absence of sources. A complete index analysis is presented showing regularity of the magnetic oriented formulation under standard topological conditions on the network interconnection. In comparison to conventional MNA, the differential‐algebraic index of MONA is smaller by one in most cases which facilitates the numerical solution. Some preliminary numerical experiments are presented for illustration of the feasibility and stability of the new approach.
นรกภูมิในไตรภูมิ-พระมาลัย: ความสัมพันธ์กับคัมภีร์สำคัญทางพระพุทธศาสนา
Creators: name: ภัครพล แสงเงิน
Publisher: name: มูลนิธิธรรมะคุ้มครองโลก
Year: 2020
Subjects: นรกภูมิ
ไตรภูมิ-พระมาลัย
คัมภีร์ทางพระพุทธศาสนา
ความสัมพันธ์
Narokphum
Traibhum-Phramalai
Buddhism scripture
relationship

description: ธรรมธารา, 6, 2, 61-104