cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Strong-Field Molecular Ionization Beyond The Single Active Electron Approximation
Creators: name: Vigneau, Jean-Nicolas
name: Nguyen-Dang, Tung
name: Charron, Eric
name: Atabek, Osman
Publisher: name: arXiv
Year: 2022
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The present work explores quantitative limits to the Single-Active Electron (SAE) approximation, often used to deal with strong-field ionization and subsequent attosecond dynamics. Using a time-dependent multi\-configuration approach, specifically a Time-Dependent Configuration Interaction (TDCI) method, we solve the time-dependent Schr{ö}dinger equation (TDSE) for the two-electron dihydrogen molecule, with the possibility of tuning at will the electron-electron interaction by an adiabatic switch-on/switch-off function. We focus on signals of the single ionization of $H_2$ under a strong near-infrared (NIR) four-cycle, linearly-polarized laser pulse of varying intensity, and within a vibrationally frozen molecule model. The observables we address are post-pulse total ionization probability profiles as a function of the laser peak intensity. Three values of the internuclear distance R taken as a parameter are considered, R = R$_{eq}$ = 1.4 a.u, the equilibrium geometry of the molecule, R = 5.0 a.u for an elongated molecule and R = 10.2 a.u for a dissociating molecule. The most striking observation is the non-monotonous behavior of the ionization probability profiles at intermediate elongation distances with an instance of enhanced ionization and one of partial ionization quenching. We give an interpretation of this in terms of a Resonance-Enhanced-Multiphoton Ionization (REMPI) mechanism with interfering overlapping resonances resulting from excited electronic states.
Distinguishing Color-Octet and Color-Singlet Resonances at the Large Hadron Collider
Creators: name: Atre, Anupama
name: Chivukula, R. Sekhar
name: Ittisamai, Pawin
name: Simmons, Elizabeth H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Di-jet resonance searches are simple, yet powerful and model-independent, probes for discovering new particles at hadron colliders. Once such a resonance has been discovered it is important to determine the mass, spin, couplings, chiral behavior and color properties to determine the underlying theoretical structure. We propose a new variable which, in the absence of decays of the resonance into new non-standard states, distinguishes between color-octet and color-singlet resonances. To keep our study widely applicable we study phenomenological models of color-octet and color-singlet resonances in flavor universal as well as flavor non-universal scenarios. We present our analysis for a wide range of mass (2.5 - 6 TeV), couplings and flavor scenarios for the LHC with center of mass energy of 14 TeV and varying integrated luminosities of 30, 100, 300 and 1000 ${\rm fb}^{-1}$. We find encouraging results to distinguish color-octet and color-singlet resonances for different flavor scenarios at the LHC.
description: 24 pages, 5 figures, 1 table
Direct observation of low energy nuclear spin excitations in HoCrO$_3$ by high resolution neutron spectroscopy
Creators: name: Chatterji, T.
name: Jalarvo, N.
name: Kumar, C. M. N.
name: Xiao, Y.
name: Brückel, Th.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have investigated low energy nuclear spin excitations in strongly correlated electron compound HoCrO$_3$. We observe clear inelastic peaks at $E = 22.18 \pm 0.04$ $μeV$ in both energy loss and gain sides. The energy of the inelastic peaks remains constant in the temperature range 1.5 - 40 K at which they are observed. The intensity of the inelastic peak increases at first with increasing temperature and then decreases at higher temperatures. The temperature dependence of the energy and intensity of the inelastic peaks is very unusual compared to that observed in other Nd, Co and V compounds. Huge quasielastic scattering appears at higher temperatures presumably due to the fluctuating electronic moments of the Ho ions that get increasingly disordered at higher temperatures.
Bivariant Algebraic Cobordism
Creators: name: González, José Luis
name: Karu, Kalle
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14C15, 14C17, 14F43, 14M25, 55N22, 57R85

description: We associate a bivariant theory to any suitable oriented Borel-Moore homology theory on the category of algebraic schemes or the category of algebraic G-schemes. Applying this to the theory of algebraic cobordism yields operational cobordism rings and operational G-equivariant cobordism rings associated to all schemes in these categories. In the case of toric varieties, the operational T-equivariant cobordism ring may be described as the ring of piecewise graded power series on the fan with coefficients in the Lazard ring.
description: 39 pages
Singular Values, Nematic Disclinations, and Emergent Biaxiality
Creators: name: Čopar, Simon
name: Dennis, Mark R.
name: Kamien, Randall D.
name: Žumer, Slobodan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Both uniaxial and biaxial nematic liquid crystals are defined by orientational ordering of their building blocks. While uniaxial nematics only orient the long molecular axis, biaxial order implies local order along three axes. As the natural degree of biaxiality and the associated frame, that can be extracted from the tensorial description of the nematic order, vanishes in the uniaxial phase, we extend the nematic director to a full biaxial frame by making use of a singular value decomposition of the gradient of the director field instead. New defects and degrees of freedom are unveiled and the similarities and differences between the uniaxial and biaxial phase are analyzed by applying the algebraic rules of the quaternion group to the uniaxial phase.
description: 5 pages, 1 figure, submitted to PRL
Active Refrigerators Powered by Inertia
Creators: name: Hecht, Lukas
name: Mandal, Suvendu
name: Löwen, Hartmut
name: Liebchen, Benno
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present the operational principle for a refrigerator which uses inertial effects in active Brownian particles to locally reduce their (kinetic) temperature by two orders of magnitude below the environmental temperature. This principle exploits the peculiar but so-far unknown shape of the phase diagram of inertial active Brownian particles to initiate motility-induced phase separation in the targeted cooling regime only. Remarkably, active refrigerators operate without requiring isolating walls opening the route towards using them to systematically absorb and trap, e.g., toxic substances from the environment.
Fast simulation method for parameter reconstruction in optical metrology
Creators: name: Burger, S.
name: Zschiedrich, L.
name: Pomplun, J.
name: Schmidt, F.
name: Bodermann, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A method for automatic computation of parameter derivatives of numerically computed light scattering signals is demonstrated. The finite-element based method is validated in a numerical convergence study, and it is applied to investigate the sensitivity of a scatterometric setup with respect to geometrical parameters of the scattering target. The method can significantly improve numerical performance of design optimization, parameter reconstruction, sensitivity analysis, and other applications.
Long-term monitoring of PKS0558-504 with Swift: the disc-corona link
Creators: name: Gliozzi, M.
name: Papadakis, I. E.
name: Grupe, D.
name: Brinkmann, W. P.
name: Raeth, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: PKS 0558-504 is a highly variable, X-ray bright, radio-loud, Narrow-Line Seyfert 1 galaxy with super-Eddington accretion rate and extended jets that do not dominate the emission beyond the radio band. Therefore, this source represents an ideal laboratory to shed some light on the central engine in highly accreting systems and specifically on the link between accretion disc and corona. Here we present the results from a 1.5 year monitoring with Swift XRT and UVOT. The simultaneous coverage at several wavelengths confirms that PKS 0558-504 is highly variable in any band from optical, to UV and X-rays, with the latter showing the largest amplitude changes but with the UV emission dominating the radiative output. A cross-correlation analysis reveals a tight link between the emission in the optical and UV bands and provides suggestive evidence in favor of a scenario where the variability originates in the outer part of the accretion flow and propagates inwards before triggering the activity of the X-ray emitting corona. Finally, a positive correlation between the soft X-ray flux and the hard photon index suggests that in PKS 0558-504 the seed photons are provided to the corona by the soft excess component.
description: 10 pages, 9 figures, 3 tables, accepted for publication in MNRAS
Carex frigida
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: Ph.frigida L. (A. frigidus A. Gray) Cat. 73und 424. l: Dent de Valere (Marietan); oberhalb BonavaubeiChampery (Pugsley); Salanfe (J.); Barberine (F.). -2: Pointe de Chemoz (Beauverd); Mont Gond (idem). - 3: Pierre ä Vire und La Liaz^imVal^de Bagnes (Miller); Pierre ä Voir,Nordseite (F, Closuit); Val des Dix (Pannatier); Täschalp (Huber). - 4:Binntal:KehleimFeldbachtal (Mantz), Ofenhorn (Binz); Stillgalen im Eginental (Thommen); Grimsel (J.).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
MARKET PARTICIPATION OF SMALLHOLDER MAIZE FARMERS: A STUDY OF INFLUENTIAL FACTORS IN BENUE STATE, NIGERIA
Creators: name: Benjamin, Terlumun Adakole
Publisher: name: AYDEN JOURNAL
Year: 2024
Subjects: Determinants, Market participation, Maize farmers, Productivity, Benue State.

description: Considering the smallholder farmers’ market participation is a crucial issue in improving household welfare in rural areas and poverty reduction in developing countries like Nigeria. Maize production has not been given due attention; which has potential production volume and market ability. Therefore, this study was designed to identify determinants of market participation among smallholder maize farmers in Benue State, Nigeria. Data for this study were collected through questionnaire administered to maize farmers. Both purposive and random sampling techniques were used to draw an appropriate sample of 320 maize producer households for the study. The data were analysed using descriptive statistics and binary logistic regression model. The result revealed that The Cox&Snell (R Square) was 0.68 signifying that sex, age, marital status, household size, education, farming experience, farm size, output and market information accounted for 68 percent factors influencing market participation by maize farmers in Benue State, Nigeria. The Result furthermore revealed that education, farm size and output were the major determinants of market participation by maize farmers in Benue State. The constraints to market participation faced by smallholder farmers in Benue State included bad roads (92.2%), Cost of transportation (82.2%) and High taxes (79.1%). The findings of this research indicates that higher levels of maize production enhance small holders’ participation in market. It is recommended that strategies that aim at improving households’ capacity to produce Surplus production like optimal allocation of resources such as land, machinery and credit will enhance productivity and promote smallholders market participation.
Elimination of long-term variation from chaotic light curves
Creators: name: Plachy, E.
name: Kolláth, Z.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We performed a comparative dynamical investigation of chaotic test data using the global flow reconstruction method. We demonstrate that large-amplitude, long-term variations may have a disturbing effect in the analysis. The Empirical Mode Decomposition method (EMD) and the Fourier filtering were tested to remove the additional variations. Test results show that the elimination of these variations significantly increased the robustness of the reconstructions.
description: 4 pages, 6 figures, accepted for publication in AN
Temperature-driven changes in the Fermi surface of graphite
Creators: name: Thoutam, Laxman R.
name: Pate, Samuel E.
name: Wang, Tingting
name: Wang, Yong-Lei
name: Divan, Ralu
name: Martin, Ivar
name: Luican-Mayer, Adina
name: Welp, Ulrich
name: Kwok, Wai-Kwong
name: Xiao, Zhi-Li
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on temperature-dependent size and anisotropy of the Fermi pockets in graphite revealed by magnetotransport measurements. The magnetoresistances obtained in fields along the c-axis obey an extended Kohler's rule, with the carrier density following prediction of a temperature-dependent Fermi energy, indicating a change in the Fermi pocket size with temperature. The angle-dependent magnetoresistivities at a given temperature exhibit a scaling behavior. The scaling factor that reflects the anisotropy of the Fermi surface is also found to vary with temperature. Our results demonstrate that temperature-driven changes in Fermi surface can be ubiquitous and need to be considered in understanding the temperature-dependent carrier density and magnetoresistance anisotropy in semimetals.
description: To appear in Physical Review B
title: Применение программы ускоренного восстановления у пациентов после вмешательств на ободочной и прямой кишке
title: Enhanced Recovery Program for Patients after Colonic and Rectal Surgery
Creators: name: Ильканич, Андрей Яношевич
name: Дарвин, Владимир Васильевич
name: Воронин, Юрий Сергеевич
Publisher: name: Издательский центр СурГУ
Year: 2023

description: Цель – оценка результатов хирургического лечения пациентов с патологией ободочной и прямой кишки по программе ускоренного восстановления. Проведен ретроспективный одноцентровой нерандомизированный анализ результатов лечения 122 пациентов, перенесших плановые и экстренные вмешательства
на ободочной и прямой кишке: 66 (54,1%) пролеченных в 2020–2021 гг. пациентов основной группы с ведением
в периоперационном периоде по программе ускоренного восстановления; 56 (45,9%) пациентов контрольной
группы, пролеченных в 2012–2015 гг. традиционным методом. Основными критериями сравнения эффективности стали сроки восстановления функциональной активности кишечника после операции – время появления
перистальтики, сроки отхождения газов и первого самостоятельного стула, количество и характер осложнений,
а также длительность пребывания пациентов в стационаре. Применение в клинической практике разработанного протокола ускоренного восстановления пациентов после вмешательств на ободочной и прямой кишке
достоверно позволило ускорить восстановление моторно-эвакуаторной функции кишечника, сократить число
и тяжесть послеоперационных осложнений с 30,4 до 9,1%, что привело к уменьшению длительности пребывания пациентов в круглосуточном стационаре с 16,3 ± 9,4 до 9,4 ± 4,2 дней.
description: The study aims to improve the outcomes of surgical treatment for patients with colon and rectum
pathology by using an enhanced recovery program. A retrospective, single-center, non-randomized analysis of the
treatment results of 122 patients who underwent elective and emergency colon and rectal surgery was carried out.
Patients were divided into two groups: the main group, which included 66 (54.1%) patients who underwent enhanced recovery program-based surgery in 2020–2021, and the control group, which included 56 (45.9%) patients
who underwent conventional surgery in 2012–2015. The main criteria for comparing the performance were the
post-surgery recovery time of the intestines’ functional activity, particularly the time of the peristalsis appearance,
the gases output, and the first stool, the number and type of complications, as well as the duration of in-patient  treatment. Clinical practice demonstrated significant improvements when using the enhanced recovery protocol
for patients after colon and rectal surgeries: accelerated recovery of the intestines’ motor-evacuation function, reduction of the number and severity of post-surgical complications from 30.4% to 9.1%, resulting in a faster in-patient recovery from 16.3 ± 9.4 to 9.4 ± 4.2 days.
Banach-Lie groupoids and generalized inversion
Creators: name: Beltiţă, Daniel
name: Goliński, Tomasz
name: Jakimowicz, Grzegorz
name: Pelletier, Fernand
Publisher: name: arXiv
Year: 2018
Subjects: subject: Functional Analysis (math.FA)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 22A22, 58H05, 46L05

description: We study a few basic properties of Banach-Lie groupoids and algebroids, adapting some classical results on finite dimensional Lie groupoids. As an illustration of the general theory, we show that the notion of locally transitive Banach-Lie groupoid sheds fresh light on earlier research on some infinite-dimensional manifolds associated with Banach algebras.
description: 45 pages, too appear in J. Funct. Anal
Transport studies of dual-gated ABC and ABA trilayer graphene: band gap opening and band structure tuning in very large perpendicular electric field
Creators: name: Zou, K.
name: Zhang, Fan
name: Clapp, C.
name: MacDonald, A. H.
name: Zhu, J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the transport properties of ABC and ABA stacked trilayer graphene using dual, locally gated field effect devices. The high efficiency and large breakdown voltage of the HfO2 top and bottom gates enables independent tuning of the perpendicular electric field and the Fermi level over an unprecedentedly large range. We observe a resistance change of six orders of magnitude in the ABC trilayer, which demonstrates the opening of a band gap. Our data suggest that the gap saturates at a large displacement field of D ~ 3 V/nm, in agreement with self-consistent Hartree calculations. In contrast, the ABA trilayer remains metallic even under a large perpendicular electric field. Despite the absence of a band gap, the band structure of the ABA trilayer continues to evolve with increasing D. We observe signatures of two-band conduction at large D fields. Our self-consistent Hartree calculation reproduces many aspects of the experimental data, but also points to the need for more sophisticated theory.
Weighted total least squares solutions for applications in geodesy
Creators: name: Fang, Xing
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Total least-squares
subject: nonlinear model
subject: iterative algorithms
subject: Nichtlineares Modell
subject: iterative Algorithmen
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Simulation der Epidemie von Septoria tritici an Winterweizen mit dem Modell SEPTRI2 unter besonderer Berücksichtigung der Sortenanfälligkeit
Creators: name: Erven, Tobias
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Simulation model
subject: cultivar varieties
subject: Septoria tritici
subject: Simulationsmodell
subject: Sortenunterschiede
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]
Muta- und semisynthetische Zugänge zu Konjugaten aus Ansamitocinen und Tumor-assoziierten Liganden
Creators: name: Mancuso, Lena
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Mutasynthese
subject: Semisynthese
subject: Ansamitocin
subject: CuAAC
subject: MagSilica®
subject: Diels-Alder-Cycloaddition
subject: Mutasynthesis
subject: semisynthesis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Multitasking, education, and unemployment as determinants of work-related mental health
Creators: name: Pikos, Anna Katharina
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2017
Subjects: subject: Work-related mental health
subject: multitasking
subject: non-monetary returns to education
subject: Arbeitsbezogene psychische Probleme
subject: nicht monetäre Bildungserträge
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
A strongly coupled zig-zag transition
Creators: name: Balasubramanian, Vijay
name: Berkooz, Micha
name: Ross, Simon F.
name: Simon, Joan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The zig-zag symmetry transition is a phase transition in 1D quantum wires, in which a Wigner lattice of electrons transitions to two staggered lattices. Previous studies model this transition as a Luttinger liquid coupled to a Majorana fermion. The model exhibits interesting RG flows, involving quenching of velocities in subsectors of the theory. We suggest an extension of the model which replaces the Majorana fermion by a more general CFT; this includes an experimentally realizable case with two Majorana fermions. We analyse the RG flow both in field theory and using AdS/CFT techniques in the large central charge limit of the CFT. The model has a rich phase structure with new qualitative features, already in the two Majorana fermion case. The AdS/CFT calculation involves considering back reaction in space-time to capture subleading effects.
description: 39 pages, 6 figures
Enhanced Dirac node separation in strained Cd3As2 topological semimetal
Creators: name: Krizman, Gauthier
name: Bermejo-Ortiz, Joaquin
name: Goyal, Manik
name: Lygo, Alexander C.
name: Wang, Jiashu
name: Zhang, Zhan
name: Assaf, Badih A.
name: Stemmer, Susanne
name: de Vaulchier, Louis-Anne
name: Guldner, Yves
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In topological semimetals, nodes appear at symmetry points in the Brillouin zone as a result of band inversion, and yield quasi-relativistic massless fermions at low energies. Cd3As2 is a three-dimensional topological semimetal that hosts two Dirac cones responsible for a variety of quantum phenomena. In this work, we demonstrate the strain tuning of the Dirac nodes of Cd3As2 through a combination of magnetooptical infrared spectroscopy and high-resolution X-ray diffraction studies performed on epitaxial films. In these thin films, we observe a giant enhancement of the node separation in momentum space by close to a factor of 4. A combination of experimental measurements and theoretical modelling allows relate the origin of this enhancement to a strengthening of the topological band inversion driven by lattice strain. Our results demonstrate how strain can be used as a knob to tune the topological properties of semimetals and to potentially enhance their performance and response for various applications.
Rituale und Traditionen christlicher Bußbruderschaften in Bilbao/Spanien
Creators: name: Opitz, Jeanette
Publisher: name: Hannover : Universität Hannover
Year: 2000
Subjects: subject: Confraternities
subject: Bilbao
subject: processions
subject: Bußbruderschaft
subject: Geschichte
subject: Gesellschaft
subject: Karfreitagsprozession
subject: Karwoche
subject: Katholische Kirche
subject: Ritual
subject: Tradition
subject: Volksfrömmigkeit
subject: Dewey Decimal Classification::200 | Religion, Religionsphilosophie

description: [no abstract]
Coherent quantum dynamics in donor-bridge-acceptor systems: Beyond the hopping and super-exchange mechanisms
Creators: name: Jang, Seogjoo
name: Berkelbach, Timothy C.
name: Reichman, David R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The population transfer dynamics of model donor-bridge-acceptor systems is studied by comparing a recently developed polaron-transformed quantum master equation (PQME) with the well-known Redfield and Forster theories of quantum transport. We show that the PQME approach reduces to these two theories in their respective limits of validity and naturally interpolates between them as a function of the system-bath coupling strength. By exploring the parameter space of our model problem, we identify novel regimes of transport dynamics in bridged systems like those encountered in biological and organic energy transfer problems. Furthermore, we demonstrate that three-level systems like the ones studied herein represent ideal minimal models for the identification of quantum coherent transport as embodied in super-exchange phenomena that cannot be captured by Forster-like hopping approaches.
description: 12 pages, 5 figures
Enhanced Magnetization from Proton Irradiated Bulk van der Waals Magnet CrSiTe3
Creators: name: Martinez, L. M.
name: Liu, Y.
name: Petrovic, C.
name: Shao, L.
name: Wang, Q.
name: Singamaneni, S. R.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Van der Waals (vdWs) crystals have attracted a great deal of scientific attention due to their interesting physical properties and widespread practical applications. Among all, CrSiTe3 (CST) is a ferromagnetic semiconductor with the Curie temperature (TC) of ~32 K. In this letter, we study the magnetic properties of bulk CST single-crystal upon proton irradiation with the fluence of 1x1018 protons/cm2. Most significantly, we observed an enhancement (23%) in the saturation magnetization from 3.9 μB to 4.8 μB and is accompanied by an increase in the coercive field (465-542 Oe) upon proton irradiation. Temperature-dependent X-band electron paramagnetic resonance measurements show no additional magnetically active defects/vacancies that are generated upon proton irradiation. The findings from X-ray photoelectron spectroscopy and Raman measurements lead us to believe that modification in the spin-lattice coupling and introduction of disorder could cause enhancement in saturation magnetization. This work demonstrates that proton irradiation is a feasible method in modifying the magnetic properties of vdWs crystals, which represents a significant step forward in designing future spintronic and magneto-electronic applications.
description: The results remain inconclusive
Pressure-temperature phase diagram of CaK(Fe$_{1-x}$Mn$_x$)$_4$As$_4$ for $x$=0.024
Creators: name: Xiang, Li
name: Xu, Mingyu
name: Bud'ko, Sergey L.
name: Canfield, Paul C.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Resistance measurements on single crystals of CaK(Fe$_{1-x}$Mn$_x$)$_4$As$_4$ ($x$ = 0.024) were performed under hydrostatic pressure up to 5.15 GPa. The pressure dependence of the magnetic and superconducting transition temperatures and that of the superconducting upper critical field are reported. Our results show that upon increasing pressure, the magnetic transition temperature $T_{N}$ is suppressed, whereas the superconducting transition temperature $T_{c}$ first increases and then decreases, exhibiting a maximum at a pressure $p_c$ corresponding to the intersection of the $T_{N}$($p$) and $T_{c}$($p$) lines. In addition, a minimum in the normalized slope of the superconducting upper critical field as well as a change in the pressure dependence of the inferred superconducting coherence length are observed at $p_c$, suggesting a difference in the Fermi surface of the paramagnetic and antiferromagnetic states. Finally, CaK(Fe$_{1-x}$Mn$_x$)$_4$As$_4$ ($x$ = 0.024) likely goes through a half-collapsed-tetragonal phase transition at $\sim$ 4.3 GPa, further demonstrating that the half-collapsed-tetragonal transition pressure in the CaKFe$_4$As$_4$ system is relatively insensitive to transition metal substitution.
description: 6 figures
title: Bulletin de la Société d'Archéologie et d'histoire de la de la Moselle / Memoires de la Société d'Archéologie et d'histoire de la de la Moselle, Metz 1862
Creators: name: Braun, Johann W. J.
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Bulletin de la Société d'Archéologie et d'histoire de la de la Moselle. Cinquième année. Metz 1862 Rezension zu: Memoires de la Société d'Archéologie et d'histoire de la de la Moselle, Metz 1862
Photoluminescence studies of Zeeman effect in type-II InSb/InAs nanostructures
Creators: name: Terentyev, Ya. V.
name: Mukhin, M. S.
name: Toropov, A. A.
name: Nestoklon, M. O.
name: Meltser, B. Ya.
name: Semenov, A. N.
name: Solovyev, V. A.
name: Ivanov, S. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electron spin polarization up to 100% has been observed in type-II narrow-gap heterostructures with ultrathin InSb insertions in an InAs matrix via investigation of circularly polarized photoluminescence in an external magnetic field applied in Faraday geometry. The polarization degree decreases drastically, changes its sign, and saturates finally at the value of 10% in the limit of either high temperature or strong excitation. The observed effect is explained in terms of strong Zeeman splitting of the electron conduction band in the InAs matrix and a heavy-hole state confined in the InSb insertion, due to a large intrinsic g-factor of both types of carriers. The hole ground state in a monolayer scale InSb/InAs quantum well, calculated using a tight-binding approach, fits well the observed emission wavelength. Temperature dependence of the emission polarization degree is in good agreement with its theoretical estimation performed in the framework of a proposed phenomenological model.
description: 19 pages, 9 figures
Reactivity and Stability of Ultrathin VOx Films on Pt(111) in Catalytic Methanol Oxidation
Creators: name: Von Boehn, Bernhard
name: Scholtz, Lena
name: Imbihl, Ronald
Publisher: name: Dordrecht : Springer Science + Business Media
Year: 2020
Subjects: subject: Methanol oxidation
subject: Pt(111)
subject: Stranski–Krastanow growth
subject: Supported catalyst
subject: vanadium oxide catalysts
subject: Auger electron spectroscopy
subject: Catalytic oxidation
subject: Electrons
subject: Methanol
subject: Monolayers
subject: Oxidation
subject: Platinum compounds
subject: Ultrathin films
subject: Methanol Oxidation
subject: Photoemission electron microscopy
subject: Rate measurements
subject: Reaction conditions
subject: Reactive deposition
subject: Spatial homogeneity
subject: Subsurface regions
subject: Ultrathin layers
subject: Vanadium compounds
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: The growth of ultrathin layers of VOx (< 12 monolayers) on Pt(111) and the activity of these layers in catalytic methanol oxidation at 10−4 mbar have been studied with low-energy electron diffraction, Auger electron spectroscopy, rate measurements, and with photoemission electron microscopy. Reactive deposition of V in O2 at 670 K obeys a Stranski–Krastanov growth mode with a (√3 × √3)R30° structure representing the limiting case for epitaxial growth of 3D-VOx. The activity of VOx/Pt(111) in catalytic methanol oxidation is very low and no redistribution dynamics is observed lifting the initial spatial homogeneity of the VOx layer. Under reaction conditions, part of the surface vanadium diffuses into the Pt subsurface region. Exposure to O2 causes part of the V to diffuse back to the surface, but only up to one monolayer of VOx can be stabilized in this way at 10−4 mbar.
Physical Interaction: Reconstructing Hand-object Interactions with Physics
Creators: name: Hu, Haoyu
name: Yi, Xinyu
name: Zhang, Hao
name: Yong, Jun-Hai
name: Xu, Feng
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4.5

description: Single view-based reconstruction of hand-object interaction is challenging due to the severe observation missing caused by occlusions. This paper proposes a physics-based method to better solve the ambiguities in the reconstruction. It first proposes a force-based dynamic model of the in-hand object, which not only recovers the unobserved contacts but also solves for plausible contact forces. Next, a confidence-based slide prevention scheme is proposed, which combines both the kinematic confidences and the contact forces to jointly model static and sliding contact motion. Qualitative and quantitative experiments show that the proposed technique reconstructs both physically plausible and more accurate hand-object interaction and estimates plausible contact forces in real-time with a single RGBD sensor.
description: Accepted to SIGGRAPH Asia 2022, Conference Track
Diffusing magnetic Tb impurities and magnetotransport in strongly spin-polarized Bi films
Creators: name: Sologub, Sergii
name: Lükermann, Daniel
name: Pfnür, Herbert
name: Tegenkamp, Christoph
Publisher: name: College Park, MD : American Physical Society
Year: 2013
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: As a contribution to electronic transport within strongly spin-polarized surface states and its modification by adsorption of magnetic impurities we studied the adsorption of Tb (atomic magnetic moment 10 μB) on epitaxial Bi(111) films by means of surface sensitive (magneto)conductance and low-energy electron diffraction. Surface diffusion turned out to be non-negligible even at substrate temperatures of 10 K. The Tb adatoms finally nucleate at intrinsic defects of the Bi(111) surface, where the Tb impurities act as dopants but not as scatterers. Nevertheless, time-dependent measurements allowed to determine also single-particle Tb scattering properties, as also supported by simulations of adsorption kinetics and time-dependent conductance. The magnetoconductance properties are characterized by small charge transfer (0.05 e/atom) and strong spin-orbit scattering, which in this case results only in strong reduction of the weak antilocalization effect but not a reversal to weak localization as for Fe and Co [see Lükermann, Sologub, Pfnür, Klein, Horn-von Hoegen, and Tegenkamp, Phys. Rev. B 86, 195432 (2012)]. Although Tb has a magnetic moment, which is by far higher than for adsorbed Fe and Co, it turns out that the f electrons of Tb play essentially no role in scattering of the conduction electrons, yielding an even smaller scattering cross section than that for Fe and Co. The adatom coordination (interstitial or on the surface) may also play an important role. © 2013 American Physical Society.
Quantum zero point electromagnetic energy difference between the superconducting and the normal phase in a HTc superconducting metal bulk sample
Creators: name: Allocca, Annalisa
name: Avino, Saverio
name: Balestrieri, Sergio
name: Calloni, Enrico
name: Caprara, Sergio
name: Carpinelli, Massimo
name: D'Onofrio, Luca
name: D'Urso, Domenico
name: De Rosa, Rosario
name: Errico, Luciano
name: Gagliardi, Gianluca
name: Grilli, Marco
name: Mangano, Valentina
name: Marsella, Maria
name: Naticchioni, Luca
name: Pasqualetti, Antonio
name: Pepe, Giovanni Piero
name: Perciballi, Maurizio
name: Pesenti, Luca
name: Puppo, Paola
name: Rapagnani, Piero
name: Ricci, Fulvio
name: Rosa, Luigi
name: Rovelli, Carlo
name: Rozza, Davide
name: Ruggi, Paolo
name: Saini, Naurang
name: Sequino, Valeria
name: Sipala, Valeria
name: Stornaiuolo, Daniela
name: Tafuri, Francesco
name: Tagliacozzo, Arturo
name: Melo, Iara Tosta e
name: Trozzo, Lucia
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We provide a novel methodological approach to the estimate of the change of the Quantum Vacuum electromagnetic energy density in a High critical Temperature superconducting metal bulk sample, when it undergoes the transition in temperature, from the superconducting to the normal phase. The various contributions to the Casimir energy in the two phases are highlighted and compared. While the TM polarization of the vacuum mode allows for a macroscopic description of the superconducting transition, the changes in the TE vacuum mode induced by the superconductive correlations are introduced within a microscopic model, which does not explicitly take into account the anisotropic structure of the material.
description: 20 pages, 13 figures, to be published in Phys.Rev. B
Asymmetric Roughness of Elastic Interfaces at the Depinning Threshold
Creators: name: Toivonen, Esko
name: Molkkari, Matti
name: Räsänen, Esa
name: Laurson, Lasse
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Roughness of driven elastic interfaces in random media is typically understood to be characterized by a single roughness exponent $ζ$. We show that at the depinning threshold, due to symmetry breaking caused by the direction of the driving force, elastic interfaces with local, long-range and mean-field elasticity exhibit asymmetric roughness. It is manifested as a skewed distribution of the local interface heights, and can be quantified by using detrended fluctuation analysis to compute a spectrum of local, segment-level scaling exponents. The asymmetry is observed as approximately linear dependence of the local scaling exponents on the difference of the segment height from the mean interface height.
description: 6 pages, 4 figures, Supplemental Material containing 3 pages, 4 figures
Efficient In Vivo Screening Method for the Identification of C4 Photosynthesis Inhibitors Based on Cell Suspensions of the Single-Cell C4 Plant Bienertia sinuspersici
Creators: name: Minges, Alexander
name: Janßen, Dominik
name: Offermann, Sascha
name: Groth, Georg
Publisher: name: Lausanne : Frontiers Media S.A.
Year: 2019
Subjects: subject: Bienertia sinuspersici
subject: C4 photosynthesis
subject: cell suspension
subject: Inhibitor
subject: phosphoenolpyruvate carboxylase
subject: pyruvate phosphate dikinase
subject: screening
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::580 | Pflanzen (Botanik)

description: The identification of novel herbicides is of crucial importance to modern agriculture. We developed an efficient in vivo assay based on oxygen evolution measurements using suspensions of chlorenchyma cells isolated from the single-cell C4 plant Bienertia sinuspersici to identify and characterize inhibitors of C4 photosynthesis. This novel approach fills the gap between conventional in vitro assays for inhibitors targeting C4key enzymes and in vivo experiments on whole plants. The assay addresses inhibition of the target enzymes in a plant context thereby taking care of any reduced target inhibition due to metabolization or inadequate uptake of small molecule inhibitors across plant cell walls and membranes. Known small molecule inhibitors targeting C4 photosynthesis were used to validate the approach. To this end, we tested pyruvate phosphate dikinase inhibitor bisindolylmaleimide IV and phosphoenolpyruvate carboxylase inhibitor okanin. Both inhibitors show inhibition of plant photosynthesis at half-maximal inhibitory concentrations in the sub-mM range and confirm their potential to act as a new class of C4 selective inhibitors.
Non-Markovian Toy Quantum Chain
Creators: name: Bodor, András
name: Diósi, Lajos
name: Kallus, Zsófia
name: Konrad, Thomas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a simple structure for stationary non-Markovian quantum chains in the framework of collisional dynamics of open quantum systems. To this end, we modify the microscopic Markovian system--reservoir model, consider multiple collisions with each of the molecules with an overlap between the collisional time intervals. We show how the equivalent Markovian quantum chain can be constructed with the addition of satellite quantum memory to the system. We distinguish quantum from classical non-Markovianity. Moreover, we define the counts of non-Markovianity by the required number of satellite qubits and bits, respectively. As the particular measure of quantum non-Markovianity the discord of the satellite w.r.t. the system is suggested. Simplest qubit realizations are discussed, and the significance for real system--environment dynamics is also pointed out.
description: 10 pages, 10 figures
Carex foetida DC.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: 0. foetida (Vill.) DC. (A.foetidus Vill.) Cat. 74. 2: Alp Majing ob Leuk (Besse). - 3: Im Val de Bagnes schon bei Bonatchesse (J.) und unter Le Pleureur (Mlarietan); Val desDix:Liappey (J.), Seilon (J.) undLaLuette (Pannatier);zwischen Randa und Täsch, 1430 m, herabgeschwemmt (Huber); Saastal: ob dem Höhbord (Grundberg), etwa 2600 m (Hirschmann), Nordwestfuss des Mittaghorns ob Fee am Weg zur Britanniahütte (Huber), Meiggertal ob Zermeiggern, bis gegen 2800 m (Exk. Soc. Murith. 1930). - 4: Eginental (Henchoz). Var. viscosa (Vill.) A. et G. - Scheint im Wallis vorzuherrschen.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Discovery of non-metastable ammonia masers in Sagittarius B2
Creators: name: Yan, Y. T.
name: Henkel, C.
name: Menten, K. M.
name: Gong, Y.
name: Nguyen, H.
name: Ott, J.
name: Ginsburg, A.
name: Wilson, T. L.
name: Brunthaler, A.
name: Belloche, A.
name: Zhang, J. S.
name: Budaiev, N.
name: Jeff, D.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of widespread maser emission in non-metastable inversion transitions of NH$_3$ toward various parts of the Sagittarius B2 molecular cloud/star forming region complex: We detect masers in the $J,K = $ (6,3), (7,4), (8,5), (9,6), and (10,7) transitions toward Sgr B2(M) and Sgr B2(N), an NH$_3$ (6,3) maser in Sgr B2(NS), and NH$_3$ (7,4), (9,6), and (10,7) masers in Sgr B2(S). With the high angular resolution data of the Karl G. Jansky Very Large Array (JVLA) in A-configuration we identify 18 maser spots. Nine maser spots arise from Sgr B2(N), one from Sgr B2(NS), five from Sgr B2(M), and three in Sgr B2(S). Compared to our Effelsberg single dish data, the JVLA data indicate no missing flux. The detected maser spots are not resolved by our JVLA observations. Lower limits to the brightness temperature are $>$3000~K and reach up to several 10$^5$~K, manifesting the lines' maser nature. In view of the masers' velocity differences with respect to adjacent hot molecular cores and/or UCH{\scriptsize II} regions, it is argued that all the measured ammonia maser lines may be associated with shocks caused either by outflows or by the expansion of UCH{\scriptsize II} regions. Overall, Sgr B2 is unique in that it allows us to measure many NH$_3$ masers simultaneously, which may be essential to elucidate their so far poorly understood origin and excitation.
description: 17 pages, 14 figures, 7 tables. Accepted for publication in A&A Letter
Effect of orchard management factors on flesh color of two red-fleshed apple clones
Creators: name: Wellner, Annika
name: Grimm, Eckhard
name: Knoche, Moritz
Publisher: name: Basel : MDPI AG
Year: 2019
Subjects: subject: Anthocyanin
subject: Canopy
subject: Crop load
subject: Light interception
subject: Malus x domestica
subject: Parenchyma
subject: UV light
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben

description: Little is known about factors affecting anthocyanin biosynthesis in red-fleshed apples (Malus x domestica Borkh.). The objective was to establish the effects of orchard management factors on flesh anthocyanin content of dark-colored (DC) and light-colored (LC) apple clones. Flesh color was assessed by measuring color in the L, a, b mode using a spectrophotometer and predicting the anthocyanin content based on relationships between the absorption of a flesh extract at 530 nm and the L-value determined using a spectrophotometer (r2 = 0.99 ***). Fruit from the DC clone were red by 86 days after full bloom (DAFB), whereas the LC clone began to color at 136 DAFB. Color intensity in both clones decreased from the top of the tree to the base. Further, the intensity of the flesh color of the DC clone decreased with shading (94% absorption of incident photosynthetic active radiation). Covering a fruit with a UV absorbing film (100% UV absorption) had no effect on flesh color in the DC clone but decreased color in the LC clone. Fruit thinning increased color in DC and LC fruit. There was little change in flesh color during storage. However, the DC clone developed severe flesh browning as storage progressed beyond 30 days. The results demonstrated that light (visible and UV wavelength) stimulated, whereas shade inhibited, anthocyanin biosynthesis in the flesh under orchard conditions.
Scattering Approach for Fluctuation--Induced Interactions at Fluid Interfaces
Creators: name: Noruzifar, Ehsan
name: Wagner, Jef
name: Zandi, Roya
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop the scattering formalism to calculate the interaction between colloidal particles trapped at a fluid interface. Since, in addition to the interface, the colloids may also fluctuate in this system, we implement the fluctuation of the boundaries into the scattering formalism and investigate how the interaction between colloids is modified by their fluctuations. This general method can be applied to any number of colloids with various geometries at an interface. We apply the formalism derived in this work to a system of spherical colloids at the interface between two fluid phases. For two spherical colloids, this method very effectively reproduces the previous known results. For three particles we find analytical expressions for the large separation asymptotic energies and numerically calculate the Casimir interaction at all separations. Our results show an interesting three body effect for fixed and fluctuating colloids. While the three body effect strengthens the attractive interaction between fluctuating colloids, it diminishes the attractive force between colloids fixed at an interface.