cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Relations between Infant Sleep Quality, Physiological Reactivity, and Emotional Reactivity to Stress at 3 and 6 Month
Creators: name: Chandra, Archita
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: This study examined the association between infant physiological self-regulation in baseline and stress-inducing scenarios and future sleep quality and emotional reactivity to stress. A sample of 89 healthy African American mother-infant dyads were recruited as part of the Neonatal and Pediatric Sleep study. Home visits were conducted when infants were 3 and 6 months of age. Baseline cardiac data was obtained at both time-points to assess RSA change (an index of physiological reactivity), sleep assessments were conducted for one week following the home visits at each time-point (from which actigraphy data was collected), and the still-face paradigm (SFP) was conducted at the 6 month time-point. Results showed significant associations between sleep and emotional reactivity llduring the SFP such that 6 month sleep efficiency was positively associated with neutral affect and negatively associated with positive affect in the normal episode of the SFP and amount of sleep minutes at 6 months was negatively associated with positive affect in the still-face episode of the SFP. In addition, significant links were found between sleep and RSA change in the SFP including a negative relationship between sleep efficiency at 3 months and self-regulation in the still-face episode of the SFP at 6 months and a negative relationship between 6 month sleep efficiency and RSA change from the normal to the still-face episodes of the SFP. These results suggest that there is a link between both early and concurrent sleep and emotional and physiological reactivity to stress.
Effect of Biochar and Acidithiobacillus ferrooxidans on Heavy Metal Content in Soil and Lettuce
Creators: name: Yang, Xiuyuan
name: Zhang, Zhenming
name: Zhang, Jiachun
name: Wu, Xianliang
name: Luo, Wenmin
name: Mu, Guiting
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Astronomical and Space Sciences not elsewhere classified
subject: Cancer

description: The mechanism of biochar remediation of heavy metal contamination in soils has been studied quite a lot, but there are still many uncertainties about the effect of interaction between biochar and functional bacteria that adsorb and leach heavy metals. In this paper, we conducted a pot experiment to investigate in depth the effects of biochar, Acidithiobacillus ferrooxidans, and their combined treatment on heavy metal contents (Cr, As, Cd, and Pb) in soil and lettuce by using biochar and A. ferrooxidans. The results showed that biochar, A. ferrooxidans, and combined treatment increased soil pH by 42.55 ~ 51.06% and decreased the content of heavy metals in soil (0.07 ~ 60.80%). The average decrease was as follows: combined treatment (28.42%) > biochar (22.35%) > A. ferrooxidans (18.94%). All three treatments reduced the content of heavy metals in lettuce (26.19–84.42%), and the average size was combined treatment (60.82%) > biochar (52.55%) > A. ferrooxidans (44.00%). Biochar and A. ferrooxidans inhibited the enrichment of heavy metals in lettuce and promoted the growth of lettuce and the increase of nutrients. The combination of biochar and A. ferrooxidans can effectively control soil heavy metal pollution. The combined treatment can reduce the heavy metal content of lettuce and promote its growth, which is an excellent material for soil heavy metal deterrent control and has distinguished application prospects.
One-pot synthesis and antibacterial screening of new (nicotinonitrile-thiazole)-based mono- and bis(Schiff bases) linked to arene units
Creators: name: Elneairy, Mohamed A. A.
name: Sanad, Sherif M. H.
name: Mekky, Ahmed E. M.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology

description: Two series of (nicotinonitrile-thiazole)-based Schiff bases 1 and their bis(Schiff bases) analogs 2 are efficiently prepared in this study. A one-pot protocol was designed to prepare the target products involved the reaction of the respective nicotinonitrile-based salicylaldehyde, thiosemicarbazide, and the appropriate mono- or bis(α-haloketones). The reaction was heated at 100 °C for 5–8 h in dioxane and mediated by triethylamine to produce the target hybrids in 80–92% yields. Generally, the (nicotinonitrile-thiazole)-based Schiff bases 1 demonstrated superior antibacterial activity over their bis(Schiff bases) analogs 2. The antibacterial activity of Schiff bases 1d and 1e linked to p-tolyl and 4-methoxyphenyl units was the best against Staphylococcus aureus, Enterococcus faecalis, Escherichia coli, and Pseudomonas aeruginosa strains. They had MIC and MBC values ranging from 3.8 to 4.0 and 7.7 to 8.0 µM, respectively. Using SwissADME to predict the physicochemical properties, lipophilicity, and drug-likeness of new products, Schiff bases 1 can be considered as drug-like scaffolds.
Can helium envelopes change the outcome of direct white dwarf collisions?
Creators: name: Holcomb, Cole
name: Kushnir, Doron
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Collisions of white dwarfs (WDs) have recently been invoked as a possible mechanism for type Ia supernovae (SNIa). A pivotal feature for the viability of WD collisions as SNIa progenitors is that a significant fraction of the mass is highly compressed to the densities required for efficient $^{56}$Ni production before the ignition of the detonation wave. Previous studies have predominantly employed model WDs composed entirely of carbon-oxygen (CO), whereas WDs are expected to have a non-negligible helium envelope. Given that helium is more susceptible to explosive burning than CO under the conditions characteristic of WD collision, a legitimate concern is whether or not early time He detonation ignition can translate to early time CO detonation, thereby drastically reducing $^{56}$Ni synthesis. We investigate the role of He in determining the fate of WD collisions by performing a series of two-dimensional hydrodynamics calculations. We find that a necessary condition for non-trivial reduction of the CO ignition time is that the He detonation birthed in the contact region successfully propagates into the unshocked shell. We determine the minimal He shell mass as a function of the total WD mass that upholds this condition. Although we utilize a simplified reaction network similar to those used in previous studies, our findings are in good agreement with detailed investigations concerning the impact of network size on He shell detonations. This allows us to extend our results to the case with more realistic burning physics. Based on the comparison of these findings against evolutionary calculations of WD compositions, we conclude that most, if not all, WD collisions will not be drastically impacted by their intrinsic He components.
description: 5 Pages, 2 Figure, 3 Tables
Cnidoscolus longibracteatus Fern. Casas & J. M. Pizarro, Fontqueria
Creators: name: Maya-Lastra, Carlos A.
name: Steinmann, Victor W.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Cnidoscolus
Cnidoscolus longibracteatus

description: 49. Cnidoscolus longibracteatus Fern.Casas & J.M.Pizarro, Fontqueria 55: 154 (2004). Type:— GUATEMALA. Chiquimula: Mun. Jocotán, Jocotán, road to Camotán, 14°48 ′ 55 ″ N, 89°23 ′ 49 ″ W, 450 m, 1 October 2000, J. Kufer 92 (holotype MSB-003008!).
 Distribution:— Guatemala (microendemic).
 Notes:— In the protologue, Fernandez Casas (2004) cites an isotype from the herbarium UVG. This acronym is not listed in Index Herbariorum. UVG is used for the Universidad del Valle de Guatemala, but the acronym UVAL is applied to the herbarium of this institution. It is likely that this is the herbarium to which the author was referring.
description: Published as part of Maya-Lastra, Carlos A. & Steinmann, Victor W., 2018, A Nomenclator of Cnidoscolus (Euphorbiaceae), pp. 1-30 in Phytotaxa 346 (1) on pages 12-13, DOI: 10.11646/phytotaxa.346.1.1, http://zenodo.org/record/13708395
The Tournament Scheduling Problem with Absences
Creators: name: Schauz, Uwe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C15, 90B35, 91A43

description: We study time scheduling problems with allowed absences as a new kind of graph coloring problem. One may think of a sport tournament where each player (each team) is permitted a certain number $t$ of absences. We then examine how many rounds are needed to schedule the whole tournament in the worst case. This upper limit depends on $t$ and on the structure of the graph $G$ whose edges represent the games that have to be played, but also on whether or not the absences are announced before the tournament starts. Therefore, we actually have two upper limits for the number of required rounds. We have $χ^t(G)$ for pre-scheduling if all absences are pre-fixed, and we have $χ_{\textit{OL}}^t(G)$ for on-line scheduling if we have to stay flexible and deal with absences when they occur. We conjecture that $χ^t(G)=Δ(G)+2t$ and that $χ_{\textit{OL}}^t(G)=χ'(G)+2t.$ The first conjecture is stronger than the Total Coloring Conjecture while the second is weaker than the On-Line List Edge Coloring Conjecture. Our conjectures hold for all bipartite graphs. For complete graphs, we prove them partially. Lower and upper bounds to $χ^t(G)$ and $χ_{\textit{OL}}^t(G)$ for general multigraphs $G$ are established, too.
description: 22 pages, 4 figures, European Journal of Operational Research (2016)
Water Scarcity, Conflict and Compensatory Mechanisms: A Case Study of Israel and Egypt
Creators: name: Pranikoff, Sam
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: A primary explanation for the lack of water-based conflict in the Middle East—
despite a notably conducive set of circumstances for fostering this type of clash—can
be understood by examining infrastructural and economic mechanisms in Israel and
Egypt. From the two countries’ foundings to the present, this duo of strikingly different
sovereign nations has increasingly used compensatory, patchwork infrastructural and
economic mechanisms to prevent what might otherwise be—or perhaps, could long
ago have been—a violent battleground for the planet’s most important resource.
Without the piecemeal policies, trade agreements, government building initiatives, and
drives in innovation, these two Middle Eastern countries might have already been in
the midst of a bloody and rapidly deteriorating scourge of water-based conflict.
Though water-based conflict does indeed seem imminent, if not for the deliberate
efforts like those made by Israel and Egypt, the Middle East today would likely be in a
much greater state of disarray.
Synthesis, structural characterization of optical isomers and potential impurities in Alalevonadifloxacin mesylate
Creators: name: Kilbile, Jaydeo T.
name: Tamboli, Yasinalli
name: Ahirrao, Vinod
name: Yeole, Ravindra
name: Merwade, Arvind Y.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: A short and efficient synthesis of three stereoisomeric and three process impurities of Alalevonadifloxacin mesylate (WCK 2349), a novel anti-methicillin-resistant Staphylococcus aureus (MRSA) antibiotic, has been disclosed. The synthesis and characterization of these impurities are discussed in detail to provide access to the reference standards for the impurity profile of the drug substance as well as the drug product. Moreover, systematic analytical method development for stereospecific separation between alalevonadifloxacin mesylate (1) and an enantiomer, WCK 6577 (2) in the presence of other process impurities for accurate quantification using liquid chromatography is also discussed.
คุณลักษณะและความชัดเจนของผู้มีอิทธิพลทางการตลาด: กลุ่มผู้นำทางความคิด
Creators: name: สุดารัตน์  แสงแก้ว
Publisher: name: โรงพิมพ์แห่งจุฬาลงกรณ์มหาวิทยาลัย
Year: 2018
Subjects: ผู้นำทางความคิด
ผู้มีอิทธิพลทางการตลาด
Opinion Leaders
Marketing Influencers

description: จุฬาลงกรณ์ธุรกิจปริทัศน์, 40, 157, 1-24
Analogues of Poisson type limit theorems in discrete bm-Fock spaces
Creators: name: Oussi, Lahcen
name: Wysoczański, Janusz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 46L53, 05A18 (Primary) 30H20, 60F05 (Secondary)

description: We present analogues of the Poisson limit distribution for the noncommutative bm-independence, which is associated with several positive symmetric cones. We construct related discrete Fock spaces with creation, annihilation and conservation operators, and prove Poisson type limit theorems for them. Properties of the positive cones, in particular the volume characteristic property they enjoy, and the combinatorics of labelled noncrossing partitions, play crucial role in these considerations.
Observation of Doppler broadening in $β$-delayed proton-$γ$ decay
Creators: name: Schwartz, S. B.
name: Wrede, C.
name: Bennett, M. B.
name: Liddick, S. N.
name: Perez-Loureiro, D.
name: Bowe, A.
name: Chen, A. A.
name: Chipps, K. A.
name: Cooper, N.
name: Irvine, D.
name: McNeice, E.
name: Montes, F.
name: Naqvi, F.
name: Ortez, R.
name: Pain, S. D.
name: Pereira, J.
name: Prokop, C.
name: Quaglia, J.
name: Quinn, S. J.
name: Sakstrup, J.
name: Santia, M.
name: Shanab, S.
name: Simon, A.
name: Spyrou, A.
name: Thiagalingam, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Background: The Doppler broadening of $γ$-ray peaks due to nuclear recoil from $β$-delayed nucleon emission can be used to measure the energies of the nucleons. This method has never been tested using $β$-delayed proton emission or applied to a recoil heavier than $A=10$. Purpose: To test and apply this Doppler broadening method using $γ$-ray peaks from the $^{26}$P($βpγ$)$^{25}$Al decay sequence. Methods: A fast beam of $^{26}$P was implanted into a planar Ge detector, which was used as a $^{26}$P $β$-decay trigger. The SeGA array of high-purity Ge detectors was used to detect $γ$ rays from the $^{26}$P($βpγ$)$^{25}$Al decay sequence. Results: Radiative Doppler broadening in $β$-delayed proton-$γ$ decay was observed for the first time. The Doppler broadening analysis method was verified using the 1613 keV $γ$-ray line for which the proton energies were previously known. The 1776 keV $γ$ ray de-exciting the 2720 keV $^{25}$Al level was observed in $^{26}$P($βpγ$)$^{25}$Al decay for the first time and used to determine that the center-of-mass energy of the proton emission feeding the 2720-keV level is 5.1 $\pm$ 1.0 (stat.) $\pm$ 0.6 (syst.) MeV, corresponding to a $^{26}$Si excitation energy of 13.3 $\pm$ 1.0 (stat.) $\pm$ 0.6 (syst.) MeV for the proton-emitting level. Conclusions: The Doppler broadening method has been demonstrated to provide practical measurements of the energies for $β$-delayed nucleon emissions populating excited states of nuclear recoils at least as heavy as $A=25$.
การวิเคราะห์สมรรถภาพของโรงแรมตามแหล่งท่องเที่ยวในประเทศไทย
Creators: name: ณิชาพัชร  สังข์แก้ว
Publisher: name: โรงพิมพ์แห่งจุฬาลงกรณ์มหาวิทยาลัย
Year: 2018
Subjects: โรงแรม
สมรรถภาพ
ผลิตภาพ
ประสิทธิภาพเชิงเทคนิค
ผลกระทบของสถานที่ตั้ง
Hotel
Performance
Productivity
Technical Efficiency
The Impact of Location

description: จุฬาลงกรณ์ธุรกิจปริทัศน์, 40, 157, 49-78
Floquet Thermalization: Symmetries and Random Matrix Ensembles
Creators: name: Regnault, N.
name: Nandkishore, Rahul
Publisher: name: arXiv
Year: 2015
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the role of symmetries in determining the random matrix class describing quantum thermalization in a periodically driven many body quantum system. Using a combination of analytical arguments and numerical exact diagonalization, we establish that a periodically driven `Floquet' system can be in a different random matrix class to the instantaneous Hamiltonian. A periodically driven system can thermalize even when the instantaneous Hamiltonian is integrable. A Floquet system that thermalizes in general can display integrable behavior at commensurate driving frequencies. When the instantaneous Hamiltonian and Floquet operator both thermalize, the Floquet problem can be in the unitary class while the instantaneous Hamiltonian is always in the orthogonal class, and vice versa. We extract general principles regarding when a Floquet problem can thermalize to a different symmetry class to the instantaneous Hamiltonian. A (finite-sized) Floquet system can even display crossovers between different random matrix classes as a function of driving frequency.
description: 5 pages + Supplementary Material, 8 figures
Chemical Characterization of Fine Aerosol Collected from Central Amazonia:  Authentic Standards Reveal Substantial Contribution from Isoprene-Derived Secondary Organic Aerosol from Low-Nitric Oxide Pathways
Creators: name: Green, Hilary
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: Atmospheric oxidation of isoprene yields substantial amounts of secondary organic aerosol (SOA) in airborne fine particulate matter (PM2.5), especially under hydroperoxyl radical-dominant conditions. Under these conditions, large quantities of gas-phase isoprene epoxydiols (IEPOX) are produced that subsequently uptake onto acidic sulfate aerosol; however, recent work has shown that isoprene SOA can also form from the condensation of multifunctional hydroperoxides. Under nitric oxide-dominant conditions, isoprene SOA is thought to be suppressed. A critical need remains to quantitatively constrain which of these isoprene SOA formation pathways dominant in central Amazonia, especially since previous efforts have not yet applied authentic standards. In the present study, daily PM2.5 samples collected in Manaus, Brazil, from 18 July to 1 August 2016 were chemically characterized for isoprene SOA constituents by using gas chromatography/electron ionization quadrupole mass spectrometry with prior trimethylsilylation and ultra-performance liquid chromatography interfaced to electrospray ionization high-resolution quadrupole time-of-flight mass spectrometry. By using authentic standards synthesized in-house, we find that IEPOX and multifunctional hydroperoxides contribute the greatest mass concentrations (1215.5 and 5.93 ng m-3, respectively, on average) to isoprene SOA. Importantly, isomeric IEPOX-derived organosulfates were measured as the single largest SOA constituents, averaging 938.2 ng m-3. Remarkably, multifunctional hydroperoxides contribute an average concentration of 5.93 ng m-3, which is likely a lower bound estimate since these reactive compounds could have degraded during storage or chemical analysis. The latter indicates that further work is urgently needed to resolve their multiphase chemical reactions in aerosol or cloud water potentially leading to isoprene SOA in this region.
An adaptive method to solve multilevel multiobjective linear programming problems
Creators: name: Kaci, Mustapha
name: Radjef, Sonia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: This paper is a follow-up to a previous work where we defined and generated the set of all possible compromises of multilevel multiobjective linear programming problems (ML-MOLPP). In this paper, we introduce a new algorithm to solve ML-MOLPP in which the adaptive method of linear programming is nested. First, we start by generating the set of all possible compromises (set of all non-dominated solutions). After that, an algorithm based on the adaptive method of linear programming is developed to select the best compromise among all the possible compromises achieved. This method will allow us to transform the initial multilevel problem into an ML-MOLPP with bounded variables. Then, apply the adaptive method which is the most efficient to solve all the multiobjective linear programming problems involved in the resolution process instead of the simplex method (It should be noted that the adaptive method is more efficient than the simplex method). Finally, all the construction stages are carefully checked and illustrated with a numerical example.
Proposal for a transmon-based quantum router
Creators: name: Sala, Arnau
name: Blaauboer, M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose an implementation of a quantum router for microwave photons in a superconducting qubit architecture consisting of a transmon qubit, SQUIDs and a nonlinear capacitor. We model and analyze the dynamics of operation of the quantum switch using quantum Langevin equations in a scattering approach and compute the photon reflection and transmission probabilities. For parameters corresponding to up-to-date experimental devices we predict successful operation of the router with probabilities above 94%.
description: Paper (6 pages, 3 figures) and Supplemental Material (8 pages, 1 figure). Few minor changes with respect to the previous version
Cnidoscolus magni-gerdtii Fern. Casas, Fontqueria
Creators: name: Maya-Lastra, Carlos A.
name: Steinmann, Victor W.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Cnidoscolus
Cnidoscolus magni-Gerdtii

description: 52. Cnidoscolus magni-gerdtii Fern.Casas, Fontqueria 55: 175 (2004). Type:— BRAZIL. Bahia: Bromado: andados 15 km na rodavia para Rio de Contas, 15 May 1983, G.G. Hatschbach 46398 (holotype MBM-0082331!; isotypes HUEF- 000001092!, MA-713805!, SPF-174000!).
 Distribution:— Brazil (microendemic).
 Notes:— This species is very similar to Cnidosolus bahianus, and a comparison of images of the two types suggests that they may represent variation within a single species. Fernández Casas (2004a) distinguished C. magni-gerdtii by having a glabrescent male perianth and ovary, as well as stinging hairs almost completely absent.
description: Published as part of Maya-Lastra, Carlos A. & Steinmann, Victor W., 2018, A Nomenclator of Cnidoscolus (Euphorbiaceae), pp. 1-30 in Phytotaxa 346 (1) on page 13, DOI: 10.11646/phytotaxa.346.1.1, http://zenodo.org/record/13708395
Using coarse GPS data to quantify city-scale transportation system resilience to extreme events
Creators: name: Donovan, Brian
name: Work, Daniel B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: This article proposes a method to quantitatively measure the resilience of transportation systems using GPS data from taxis. The granularity of the GPS data necessary for this analysis is relatively coarse; it only requires coordinates for the beginning and end of trips, the metered distance, and the total travel time. The method works by computing the historical distribution of pace (normalized travel times) between various regions of a city and measuring the pace deviations during an unusual event. This method is applied to a dataset of nearly 700 million taxi trips in New York City, which is used to analyze the transportation infrastructure resilience to Hurricane Sandy. The analysis indicates that Hurricane Sandy impacted traffic conditions for more than five days, and caused a peak delay of two minutes per mile. Practically, it identifies that the evacuation caused only minor disruptions, but significant delays were encountered during the post-disaster reentry process. Since the implementation of this method is very efficient, it could potentially be used as an online monitoring tool, representing a first step toward quantifying city scale resilience with coarse GPS data.
description: presented at the 2015 Transportation Research Board Annual Meeting, paper number 15-5465
Potassium base-catalyzed redox isomerization of propargylic alcohols to chalcones
Creators: name: Sai, Masahiro
name: Mizuno, Takatoki
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Chalcone derivatives are frequently found in bioactive compounds, natural products, and pharmaceuticals. In this study, we developed a KOtBu/DMF catalytic system to efficiently synthesize chalcone derivatives by isomerizing propargylic alcohols bearing aryl substituents at the 1- and 3-positions. Mechanistic investigations confirmed that a 1,3-hydride shift was the key process for the successful reaction. Our method does not involve the use of transition metals and possesses economic and environmental benefits.
Magnetic quantum phase transition in a metallic Kondo heterostructure
Creators: name: Liu, Zi Hong
name: Frank, Bernhard
name: Janssen, Lukas
name: Vojta, Matthias
name: Assaad, Fakher F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider a two-dimensional quantum spin system described by a Heisenberg model that is embedded in a three-dimensional metal. The two systems couple via an antiferromagnetic Kondo interaction. In such a setup, the ground state generically remains metallic down to the lowest temperatures and allows us to study magnetic quantum phase transitions in metallic environments. From the symmetry point of view, translation symmetry is present in two out of three lattice directions such that crystal momentum is only partially conserved. Importantly, the construction provides a route to study, with negative-sign-free auxiliary-field quantum Monte Carlo methods, the physics of local moments in metallic environments. Our large-scale numerical simulations show that as a function of the Kondo coupling, the system has two metallic phases. In the limit of strong Kondo coupling, a paramagnetic heavy-fermion phase emerges. Here, the spin degree of freedom is screened by means of the formation of a composite quasiparticle that participates in the Luttinger count. At weak Kondo coupling, magnetic order is present. This phase is characterized by Landau-damped Goldstone modes. Furthermore, the aforementioned composite quasiparticle remains intact across the quantum phase transition.
description: 20 pages, 15 figures
Sports Camera Pose Refinement Using an Evolution Strategy
Creators: name: Rypeść, Grzegorz
name: Kurzejamski, Grzegorz
name: Komorowski, Jacek
Publisher: name: arXiv
Year: 2022
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: This paper presents a robust end-to-end method for sports cameras extrinsic parameters optimization using a novel evolution strategy. First, we developed a neural network architecture for an edge or area-based segmentation of a sports field. Secondly, we implemented the evolution strategy, which purpose is to refine extrinsic camera parameters given a single, segmented sports field image. Experimental comparison with state-of-the-art camera pose refinement methods on real-world data demonstrates the superiority of the proposed algorithm. We also perform an ablation study and propose a way to generalize the method to additionally refine the intrinsic camera matrix.
description: Conference paper at 2022 IEEE Congress on Evolutionary Computation (CEC)
Curving Yang-Mills-Higgs Gauge Theories
Creators: name: Kotov, Alexei
name: Strobl, Thomas
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Established fundamental physics can be described by fields, which are maps. The source of such a map is space-time, which can be curved due to gravity. The map itself needs to be curved in its gauge field part so as to describe interaction forces like those mediated by photons and gluons. In the present article, we permit non-zero curvature also on the internal space, the target of the field map. The action functional and the symmetries are constructed in such a way that they reduce to those of standard Yang-Mills-Higgs (YMH) gauge theories precisely when the curvature on the target of the fields is turned off. For curved targets one obtains a new theory, a curved YMH gauge theory. It realizes in a mathematically consistent manner an old wish in the community: replacing structures constants by functions depending on the scalars of the theory. In addition, we provide a simple 4d toy model, where the gauge symmetry is abelian, but turning off the gauge fields, no rigid symmetry remains---another possible manifestation of target curvature. It now remains to be seen, if internal curvature in the above sense is realized in nature. Curvature of space-time is proven, but still negligible in particle physics, except for the very early universe where quantum gravity must have played an essential role. An important question therefore is, if glimpses of target curvature can be visible in accelerator physics. We know that at contemporary energy scales, the usual (flat) standard model describes nature to a very high accuracy. Could it be that the alleged deviations in the B to D-star-tau-nu decay reported by BaBar in 2012 and recently also by LHCb are already a manifestation of target curvature? What kind of effects does target curvature have on a YMH theory in general, for what kind of effects do we need to look out for so as to detect it?
description: 5 pages. Presented by T.S. on several occasions during the first half of 2015. Preprint finished and submitted to Phys. Rev. in July 2015
A Selection of Horace's Odes: Eighteen Translations with a Translator's Preface and Translator's Notes
Creators: name: Karsten, Alexander
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2013

description: Horace’s Odes present many challenges to English translators, which is perhaps
why they have been attempted so frequently. Over the course of my attempt to translate
the Odes, I have noticed that two challenges are particularly difficult. First, the word
order of the Odes is vital to their meaning, but Latin is impossible to translate word-for-word into English. Second, metrical formality is vital to the sense of the Odes, but their quantitative meters are nearly impossible to replicate in English. In this preface, I will examine some solutions that previous translators and scholars have proposed for these problems, then briefly explain my own methods.
Terahertz Antiferromagnetic Spin Hall Nano-Oscillator
Creators: name: Cheng, Ran
name: Xiao, Di
name: Brataas, Arne
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We consider the current-induced dynamics of insulating antiferromagnets in a spin Hall geometry. Sufficiently large in-plane currents perpendicular to the Néel order trigger spontaneous oscillations at frequencies between the acoustic and the optical eigenmodes. The direction of the driving current determines the chirality of the excitation. When the current exceeds a threshold, the combined effect of spin pumping and current-induced torques introduces a dynamic feedback that sustains steady-state oscillations with amplitudes controllable via the applied current. The ac voltage output is calculated numerically as a function of the dc current input for different feedback strengths. Our findings open a route towards terahertz antiferromagnetic spin-torque oscillators.
description: 5+ pages, 4 figures
Cnidoscolus megacanthus Breckon ex Fern. Casas, Fontqueria
Creators: name: Maya-Lastra, Carlos A.
name: Steinmann, Victor W.
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Malpighiales
Euphorbiaceae
Cnidoscolus
Cnidoscolus megacanthus

description: 55. Cnidoscolus megacanthus Breckon ex Fern.Casas, Fontqueria 55: 492 (2008). Type:— MEXICO. Oaxaca: next to hwy 190 between Oaxaca and Tehuantepec. 10.8 miles by road W of El Camarón (turnoff for Nejapa de Madero), 16°42 ′ 0 ″ N, 96°10 ′ 60 ″ W, 1000 m, 22 July 1972, G.J. Breckon & M.E. Breckon 1368 (holotype DAV-84228!; isotypes DAV-84225!,F-V0360221F!, F-V0360222F!, MEXU-00262942!, MEXU-00262943!, MICH, NY, US-00170376!, US-00170377!).
 Distribution:— Costa Rica, Guatemala, Mexico, Nicaragua.
 Notes:— This species was initially proposed by Breckon (1975) in his doctoral thesis, but Fernández Casas (2008c) validly published it.
description: Published as part of Maya-Lastra, Carlos A. & Steinmann, Victor W., 2018, A Nomenclator of Cnidoscolus (Euphorbiaceae), pp. 1-30 in Phytotaxa 346 (1) on page 13, DOI: 10.11646/phytotaxa.346.1.1, http://zenodo.org/record/13708395
Two neutron decay of 16Be
Creators: name: Lovell, A. E.
name: Nunes, F. M.
name: Thompson, I. J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently, the first example of two-neutron decay from the ground state of an unbound nucleus, $^{16}$Be, was seen. Three-body methods are ideal for exactly treating the degrees of freedom important for these decays. Using a basis expansion over hyperspherical harmonics and the hyperspherical R-matrix method, we construct a realistic model of $^{16}$Be in order to investigate its decay mode and the role of the two-neutron interaction. The neutron-$^{14}$Be interaction is constrained using shell model predictions. We obtain a ground state for $^{16}$Be that is over-bound by approximately 1 MeV with a width of approximately 0.23 MeV. This suggests, that for such systems, the three-body force needs to be repulsive.
description: 4 pages, 1 figure, contribution to the proceedings for the 21st International Conference on Few Body Problems in Physics, Chicago, Illinois, USA
Phosphatase Regulation of Heterotrimeric G protein Signaling in Arabidopsis Thaliana
Creators: name: Seifert, Clara
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2019

description: In the Arabidopsis thaliana heterotrimeric G protein signaling pathway, the phosphorylation of REGULATOR OF G PROTEIN SIGNALING (RGS1), leads to its internalization and subsequent activation of the G protein at the plasma membrane. A subset of kinases that phosphorylates this protein has been identified, so it is expected that an associated phosphatase(s) exists to act in the opposite direction. Phosphatases may reverse RGS1 phosphorylation and endocytosis, resulting in RGS1 returning to the membrane and regulating the G protein. Five candidate phosphatases have been identified in a G protein interactome as potential interactors with RGS1. After genotyping t-DNA insertion alleles of the phosphatases to identify homozygous knockouts, an etiolated hypocotyl assay was performed as a way to compare G protein signaling activation of phosphatase mutants to wild type and an RGS1 mutant, rgs1-2. Quantitative PCR was used to compare expression levels of phosphatase genes in mutants and wild type. The phosphatase mutants showed a similar elongated hypocotyl phenotype to rgs1-2 plants, indicating upregulated G protein signaling activity in both cases. These phosphatases likely function to downregulate the G protein signaling pathway possibly by removing phosphates from RGS1. These findings hold implications in understanding and manipulating hypocotyl elongation in Arabidopsis by giving insight into the molecular mechanisms that control phosphorylation of RGS1 and activation of G protein signaling.
Flaring from the supermassive black hole in Mrk 335 studied with Swift and NuSTAR
Creators: name: Wilkins, D. R.
name: Gallo, L. C.
name: Grupe, D.
name: Bonson, K.
name: Komossa, S.
name: Fabian, A. C.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Monitoring of the narrow line Seyfert 1 galaxy Markarian 335 (Mrk 335) with the Swift satellite discovered an X-ray flare beginning 2014 August 29. At the peak, the 0.5-5keV count rate had increased from that in the low flux state by a factor of 10. A target of opportunity observation was triggered with NuSTAR, catching the decline of the flare on 2014 September 20. We present a joint analysis of Swift and NuSTAR observations to understand the cause of this flare. The X-ray spectrum shows an increase in directly observed continuum flux and the softening of the continuum spectrum to a photon index of 2.49 (-0.07,+0.08) compared to the previous low flux observations. The X-ray spectrum remains well-described by the relativistically blurred reflection of the continuum from the accretion disc whose emissivity profile suggests that it is illuminated by a compact X-ray source, extending at most 5.2rg over the disc. A very low reflection fraction of 0.41 (-0.15,+0.15) is measured, unexpected for such a compact corona. The X-ray flare is, hence, interpreted as arising from the vertical collimation and ejection of the X-ray emitting corona at a mildly relativistic velocity, causing the continuum emission to be beamed away from the disc. As the flare subsides, the base of this jet-like structure collapses into a compact X-ray source that provides the majority of the radiation that illuminates the disc while continuum emission is still detected from energetic particles further out, maintaining the low reflection fraction.
description: 13 pages, 6 figures. Accepted for publication in MNRAS
Virtues of a symmetric-structure double copy
Creators: name: Carrasco, John Joseph M.
name: Pavao, Nicolas H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate a physical motivation for extending color-dual or BCJ double-copy construction to include theories with kinematic numerators that obey the same algebraic relations as symmetric structure constants, $d^{abc}=\text{Tr}[\{T^{a},T^{b}\}T^c]$. We verify that $U(N_c)$ nonlinear sigma model (NLSM) pions, long known to be color-dual in terms of antisymmetric adjoint factors, $f^{abc}$, are also color-dual in the sense of symmetric color structures, $d^{abc}$, explicitly through six-point scattering. This reframing of NLSM pion amplitudes complements our compositional construction of $d^{abc}$ color-dual higher derivative gauge operators. With adjoint and symmetric color-dual kinematics, we can span all four-point effective photon operators via a double-copy construction using amplitudes from physical theories. We further comment on a tension between locality and adjoint effective numerators, and the implications for spanning gravitational effective operators with non-adjoint kinematics.
description: v2: Matches version accepted for publication. v1: 8 pages
The Balancing Act: Nixon, Taiwan, and the Tactics of Detente
Creators: name: Herwig, Meghan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: This thesis argues that Taiwan policymaking involved both process and product.
Although Gaddis criticizes Nixon and Kissinger for cutting the State Department out of
policymaking to the point that the White House’s lack of specific expertise when making policy
became detrimental and made détente ineffective beyond relations with the USSR and PRC,15 the
evidence in this thesis demonstrates that the State Department, and the Defense Department,
played a significant role in Taiwan policymaking even though final decision-making authority
was centralized in the White House. In terms of the product, Nixon and Kissinger consistently
sought to balance relations with Beijing and Taipei, and there is little evidence that their
motivation for doing so was limited to domestic politics or the necessity of keeping their
initiatives toward Beijing a secret. What that balancing act did allow them, however, was the
opportunity to open relations with Beijing while not violating the Nixon Doctrine. The problem
was that they did not know where the proper balancing point was, and during the first three years
of the Nixon presidency, the White House, State Department, and Pentagon worked to find the
proper balance.
There were three pivotal moments in U.S.-ROC relations during the first Nixon
administration. In 1969, the U.S. Navy ended its patrol of the Taiwan Strait, touching off a chain
reaction that set the stage for the 1971-72 breakthrough to Beijing. In 1971, the United Nations
General Assembly considered whether the ROC or PRC should represent China in the world
body just as Nixon and Kissinger were starting to make progress with Beijing. Finally, in 1972,
Nixon visited the mainland and tried to set the United States on a path to normalized relations
with the People’s Republic of China. This thesis looks at how the Nixon administration made
Taiwan policy in each instance by examining the intersection of process and product: what were
the options, how did the administration weigh the pros and cons of each, and what policies
resulted from that process?
title: Kunstrechtsspiegel, Nr. 1 (2013): Kunstrechtsspiegel
title: Kunstrechtsspiegel
titleType: AlternativeTitle
Creators: name: Kunstrechtsspiegel
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: Impressum...65 IFKUR News 1. Quartal 2013...63-65 Urteilsbesprechungen...19-62 Key Elements of Just and Fair Solutions...15-19 Editorial...2-3 Inhalt
title: Kunstrechtsspiegel, Nr. 4 (2011): Kunstrechtsspiegel
title: Kunstrechtsspiegel
titleType: AlternativeTitle
Creators: name: Kunstrechtsspiegel
Publisher: name: Kunstrechtsspiegel
Year: 2017

description: Impressum...159 IFKUR-news 4. Quartal 2011...155-159 Michael Anton, Illegaler Kulturgüterverkehr, Rechtshandbuch Kulturgüterschutz und Kunstrestitutionsrecht Bd. 1 [Rez.]...150-153 Urteilsbesprechungen...127-149 Editorial: Vollstreckungsimmunität für Kunstleihgaben ausländischer Staaten: Österreichs Gerichte entscheiden in zweiter Instanz...125-126 Inhalt
Double-copy towards supergravity inflation with $α$-attractor models
Creators: name: Carrasco, John Joseph M.
name: Lewandowski, Matthew
name: Pavao, Nicolas H.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Key to the simplicity of supergravity $α$-attractor models of inflation are Volkov-Akulov fermions, often in the form of nilpotent superfields. Here we explore the possibility of using the double-copy to construct theories of Dirac-Born-Infeld-Volkov-Akulov (DBIVA) coupled to supergravity. A color-dual bootstrap admits scattering amplitudes involving pions and vectors through five-point tree-level order by order in mass-dimension, but requires the introduction of a $\text{Tr}(F^3)$ operator. Gauge theories with this operator were recently found to require a tower of higher-derivative operators to be compatible with color-kinematics duality. Adjoint-type double-copy construction at its most conservative seems to require the UV completion of DBIVA + pure Poincaré supergravity scattering amplitudes to a family of theories involving DBIVA-like particles coupled to Weyl-Einstein supergravity. We also point out an alternative solution to color-dual gauged pions that allows adjoint double-copy without a tower of higher derivative corrections but at the cost of exchange symmetry between scalars.
description: v2: Matches version accepted for publication, 37 pages, 3 figures, 4 tables. v1: Ancillary data available at this url: https://github.com/drjjmc/colorDualPions
The imprint of rapid star formation quenching on the spectral energy distributions of galaxies
Creators: name: Ciesla, L.
name: Boselli, A.
name: Elbaz, D.
name: Boissier, S.
name: Buat, V.
name: Charmandaris, V.
name: Schreiber, C.
name: Béthermin, M.
name: Baes, M.
name: Boquien, M.
name: De Looze, I.
name: Fernández-Ontiveros, J. A.
name: Pappalardo, C.
name: Spinoglio, L.
name: Viaene, S.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: [Abridged] In high density environment, the gas content of galaxies is stripped, leading to a rapid quenching of their star formation activity. This dramatic environmental effect is generally not taken into account in the SFHs usually assumed to perform spectral energy distribution (SED) fitting of these galaxies, yielding to a poor fit of their stellar emission and, consequently, a biased estimate of the SFR. We aim at reproducing the SFH of galaxies that underwent a rapid star formation quenching using a truncated delayed SFH that we implemented in the SED fitting code CIGALE. We show that the ratio between the instantaneous SFR and the SFR just before the quenching ($r_{SFR}$) is well constrained as long as rest frame UV data are available. This SED modelling is applied to the Herschel Reference Survey (HRS) containing isolated galaxies and sources falling in the dense environment of the Virgo cluster. The latter are HI-deficient due to ram pressure stripping. We show that the truncated delayed SFH successfully reproduces their SED while typical SFH assumptions fail. A good correlation is found between $r_{SFR}$ and HI-def, the parameter quantifying the gas deficiency of cluster galaxies, meaning that SED fitting results can be used to provide a tentative estimate of the gas deficiency of galaxies for which HI observations are not available. The HRS galaxies are placed on the SFR-$M_*$ diagram showing that the HI-deficient sources lie in the quiescent region confirming previous studies. Using the $r_{SFR}$ parameter, we derive the SFR of these sources before quenching and show that they were previously on the main sequence relation. We show that the $r_{SFR}$ parameter is also well recovered for deeply obscured high redshift sources, as well as in absence of IR data. SED fitting is thus a powerful tool to identify galaxies that underwent a rapid star formation quenching.
description: accepted for publication in A&A. 13 pages, 14 figures