cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Target duality in N=8 superconformal mechanics and the coupling of dual pairs
Creators: name: Gonzales, Marcelo
name: Khodaee, Sadi
name: Lechtenfeld, Olaf
name: Toppan, Francesco
Publisher: name: College Park (Maryland) : American Institute of Physics
Year: 2013
Subjects: subject: Lagrangian framework
subject: supermultiplets
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We couple dual pairs of N=8 superconformal mechanics with conical targets of dimension d and 8−d. The superconformal coupling generates an oscillator-type potential on each of the two target factors, with a frequency depending on the respective dual coordinates. In the case of the inhomogeneous (3,8,5) model, which entails a monopole background, it is necessary to add an extra supermultiplet of constants for half of the supersymmetry. The N=4 analog, joining an inhomogeneous (1,4,3) with a (3,4,1) multiplet, is also analyzed in detail
Twisting the N=2 string
Creators: name: Ketov, Sergei V.
name: Lechtenfeld, Olaf
name: Parkes, Andrew J.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1995
Subjects: subject: matrix-valued twists
subject: BRST cohomology
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The most general homogeneous monodromy conditions in N=2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1,1)⊗openZ2. For classes which generate a discrete subgroup Γ, the corresponding target space backgrounds openC1,1/Γ include half spaces, complex orbifolds, and tori. We propose a generalization of the intercept formula to matrix-valued twists, but find massless physical states only for Γ=open1 (untwisted) and Γ=openZ2 (in the manner of Mathur and Mukhi), as well as for Γ being a parabolic element of U(1,1). In particular, the 16 openZ2-twisted sectors of the N=2 string are investigated, and the corresponding ground states are identified via bosonization and BRST cohomology. We find enough room for an extended multiplet of ‘‘spacetime’’ supersymmetry, with the number of supersymmetries being dependent on global ‘‘spacetime’’ topology. However, world-sheet locality for the chiral vertex operators does not permit interactions among all massless ‘‘spacetime’’ fermions.
title: Von dreyen Brüdern, die jnen ainen Vatter erwöleten; [1535]
title: Zu ainem Exempel, das man sich wol fürsehen soll, welcher sich vnder eines anderen gewallt ergeben will
titleType: Subtitle
Creators: name: Link, Wenzeslaus
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2010

description: Nicodemus Noricus ist Pseud. für Wenzeslaus Linck
Technology brief: Technologies for African Agricultural Transformation (TAAT) maize compact
Creators: name: Atayi Opaluwah
name: Jonga Munyaradzi
name: Kirimi Sindi
name: Lewis, Sabra
Publisher: name: Gates Open Research
Year: 2021

description: In this brief: Background of the problem that TAAT is addressing Compact description Compact Objectives Achievements TAAT Cassava technologies Key challenges or lessons learned Contact information
Doping of a Spin-1 Chain: An Integrable Model
Creators: name: Frahm, Holger
name: Pfannmüller, M.P.
name: Tsvelik, A.M.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1998
Subjects: subject: antiferromagnetic chain
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: An exactly soluble model describing a spin S=1 antiferromagnetic chain doped with mobile S=1/2 carriers is constructed. In its continuum limit the undoped state is described by three gapless Majorana fermions composing the SU(2) triplet. Doping adds a scalar charge field and a singlet Majorana fermion with different velocity. We argue that this mode survives when the Haldane gap is added.
Quantitative photoacoustic imaging in radiative transport regime
Creators: name: Mamonov, Alexander V.
name: Ren, Kui
Publisher: name: arXiv
Year: 2012
Subjects: subject: Medical Physics (physics.med-ph)
subject: Numerical Analysis (math.NA)
subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 65N21

description: The objective of quantitative photoacoustic tomography (QPAT) is to reconstruct optical and thermodynamic properties of heterogeneous media from data of absorbed energy distribution inside the media. There have been extensive theoretical and computational studies on the inverse problem in QPAT, however, mostly in the diffusive regime. We present in this work some numerical reconstruction algorithms for multi-source QPAT in the radiative transport regime with energy data collected at either single or multiple wavelengths. We show that when the medium to be probed is non-scattering, explicit reconstruction schemes can be derived to reconstruct the absorption and the Gruneisen coefficients. When data at multiple wavelengths are utilized, we can reconstruct simultaneously the absorption, scattering and Gruneisen coefficients. We show by numerical simulations that the reconstructions are stable.
description: 40 pages, 13 figures
Technology brief: Technologies for African Agricultural Transformation (TAAT) livestock compact
Creators: name: Atayi Opaluwah
name: Adeniyi Adediran
name: Kirimi Sindi
name: Lewis, Sabra
Publisher: name: Gates Open Research
Year: 2021

description: In this brief: Background of the problem that TAAT is addressing Compact description Compact Objectives Achievements TAAT Cassava technologies Key challenges or lessons learned Contact information
Analysis of accretion disc structure and stability using open code for vertical structure
Creators: name: Tavleev, A. S.
name: Lipunova, G. V.
name: Malanchev, K. L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Radial structure of accretion discs around compact objects is often described using analytic approximations which are derived from averaging or integrating vertical structure equations. For non-solar chemical composition, partial ionization, or for supermassive black holes, this approach is not accurate. Additionally, radial extension of `analytically-described' disc zones is not evident in many cases. We calculate vertical structure of accretion discs around compact objects, with and without external irradiation, with radiative and convective energy transport taken into account. For this, we introduce a new open Python code, allowing different equations of state (EoS) and opacity laws, including tabular values. As a result, radial structure and stability `S-curves' are calculated for specific disc parameters and chemical composition. In particular, based on more accurate power-law approximations for opacity in the disc, we supply new analytic formulas for the farthest regions of the hot disc around stellar-mass object. On calculating vertical structure of a self-irradiated disc, we calculate a self-consistent value of the irradiation parameter $C_{\rm irr}$ for stationary $α$-disc. We find that, for a fixed shape of the X-ray spectrum, $C_{\rm irr}$ depends weakly on the accretion rate but changes with radius, and the dependence is driven by the conditions in the photosphere and disc opening angle. The hot zone extent depends on the ratio between irradiating and intrinsic flux: corresponding relation for $T_{\rm irr,\, crit}$ is obtained.
description: Accepted for publication in MNRAS, 15 pages, 15 figures, 3 appendix
X-ray edge singularity in integrable lattice models of correlated electrons
Creators: name: Eßler, F.H.L.
name: Frahm, Holger
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1997
Subjects: subject: Hubbard model
subject: t-J model
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We study the singularities in x-ray absorption spectra of one-dimensional Hubbard and t-J models. We use boundary conformal field theory and the Bethe ansatz solutions of these models with both periodic and open boundary conditions to calculate the exponents describing the power-law decay near the edges of x-ray absorption spectra in the case where the core-hole potential has bound states.
Some Results on Balancing, Cobalancing, (a,b)-Type Balancing, and (a,b)-Type Cobalancing Numbers
Creators: name: Sadek, Bouroubi
name: Ali, Debbache
Publisher: name: Zenodo
Year: 2013

description: In this paper, we present new results on balancing, cobalancing, (a, b)-type balancing and (a, b)-type cobalancing numbers as well as establish some new identities.
The Universe is at Most 88% Neutral at z=10.6
Creators: name: Bruton, Sean
name: Lin, Yu-Heng
name: Scarlata, Claudia
name: Hayes, Matthew J.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recent observations of GN-z11 with JWST have revealed a Ly$α$ emission line with an equivalent width of 18$\pm 2$ angstroms. At z=10.6, this galaxy is expected to lie in the heart of reionization. We use a series of inhomogeneous reionization simulations to derive the distribution of the Ly$α$ EW after traveling through the neutral intergalactic medium with varying average neutral gas fraction, $x_{HI}$. We use these distribution to place an upper limit of $x_{HI} < $ 0.88 at z=10.6 at 95% confidence level. We compare our upper limit to different reionization history models, which include the recently identified enhancement at the bright end of the luminosity function at z>8. We find that models in which faint galaxies have higher escape fraction compared to bright galaxies are favored by the new data.
description: 7 pages, 3 figures
title: Combining Soft Polysilazanes with Melt-Shear Organization of Core−Shell Particles: On the Road to Polymer-Templated Porous Ceramics
Creators: name: Boehm, Anna K.
name: Ionescu, Emanuel
name: Koch, Marcus
name: Gallei, Markus
Publisher: name: MDPI
Year: 2023

description: The preparation of ordered macroporous SiCN ceramics has attracted significant interest and is an attractive area for various applications, e.g., in the fields of catalysis, gas adsorption, or membranes. Non-oxidic ceramics, such as SiCN, own a great stability based on the covalent bonds between the containing elements, which leads to interesting properties concerning resistance and stability at high temperature. Their peculiar properties have become more and more important for a manifold of applications, like catalysis or separation processes, at high temperatures. Within this work, a feasible approach for the preparation of ordered porous materials by taking advantage of polymer-derived ceramics is presented. To gain access to free-standing films consisting of porous ceramic materials, the combination of monodisperse organic polymer-based colloids with diameters of 130 nm and 180 nm featuring a processable preceramic polymer is essential. For this purpose, the tailored design of hybrid organic/inorganic particles featuring anchoring sites for a preceramic polymer in the soft shell material is developed. Moreover, polymer-based core particles are used as sacrificial template for the generation of pores, while the preceramic shell polymer can be converted to the ceramic matrix after thermal treatment. Two different routes for the polymer particles, which can be obtained by emulsion polymerization, are followed for covalently linking the preceramic polysilazane Durazane1800 (Merck, Germany): (i) Free radical polymerization and (ii) atom transfer radical polymerization (ATRP) conditions. These hybrid hard core/soft shell particles can be processed via the so-called melt-shear organization for the one-step preparation of free-standing particle films. A major advantage of this technique is the absence of any solvent or dispersion medium, enabling the core particles to merge into ordered particle stacks based on the soft preceramic shell. Subsequent ceramization of the colloidal crystal films leads to core particle degradation and transformation into porous ceramics with ceramic yields of 18–54%.
Soleidae
Creators: name: Fricke, Ronald
name: Allen, Gerald R.
name: Andréfouët, Serge
name: Chen, Wei-Jen
name: Hamel, Mélanie A.
name: Laboute, Pierre
name: Mana, Ralph
name: Hui, Tan Heok
name: Uyeno, Daisuke
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Pleuronectiformes
Soleidae

description: Soleidae    Aseraggodes chapleaui Randall & Desoutter-Meniger, 2007  —Madang sole
STATUS AT MADANG. Originally described from Madang by Randall & Desoutter-Meniger (2007: 309–310, fig. 3); photographed by A. Berberian. BPBM material.
DISTRIBUTION AND HABITAT. Madang, Papua New Guinea and West Papua (Indonesia). Endemic to New Guinea. On sand bottom near corals, 30 m. Marine.
  Brachirus heterolepis (Bleeker, 1856)  —Margined sole (Fig. 29)
 STATUS AT MADANG. New record from Madang and Papua New Guinea, based on a specimen photographed at Madang by P. Laboute on 11 Dec. 2012.
DISTRIBUTION AND HABITAT. Indonesia east to Papua New Guinea. Benthic, on inshore sand bottoms, 2– 30 m. Marine.
  Pardachirus pavoninus (Lacepède, 1802)  —Peacock sole
 STATUS AT MADANG. New record from Madang, based on specimens photographed by P. Laboute on 3 Dec. 2012, and another collected by W.-J. Chen in Madang Bay. AMS and NTUM material (AMS I.17084-019; NTUM 10120).
DISTRIBUTION AND HABITAT. East Africa, Madagascar and western Mascarenes east to Tonga, north to southern Japan, south to northern Australia and New Caledonia. Found on sand and mud bottoms of lagoon and seaward reefs, 1– 40 m. Marine.
  Pardachirus poropterus (Bleeker, 1851)  —Estuary sole
 STATUS AT MADANG. First record from Madang as Achirus poropterus by Kailola (1975: 241). KFRS and WAM material.
DISTRIBUTION AND HABITAT. Indonesia east to New Guinea, north to Philippines, south to northern Australia. Benthic on soft bottoms of estuaries, lower reaches of rivers and streams, and in adjacent marine habitats, 1– 5 m. Freshwater, transitional water and marine.
  Soleichthys heterorhinos (Bloch, 1787)  —Banded sole
 STATUS AT MADANG. New record from Madang, based on a specimen photographed by P. Laboute on 1 Dec. 2012, St. PR 148. AMS and WAM material (AMS I.15786-001; WAM P.29624-055). DISTRIBUTION AND HABITAT. Red Sea east to Marshall Islands and Samoa, north to southern Japan, south to northern Australia. Sand on reef flats, 0– 10 m. Marine.
description: Published as part of Fricke, Ronald, Allen, Gerald R., Andréfouët, Serge, Chen, Wei-Jen, Hamel, Mélanie A., Laboute, Pierre, Mana, Ralph, Hui, Tan Heok & Uyeno, Daisuke, 2014, Checklist of the marine and estuarine fishes of Madang District, Papua New Guinea, western Pacific Ocean, with 820 new records, pp. 1-247 in Zootaxa 3832 (1) on pages 190-191, DOI: 10.11646/zootaxa.3832.1.1, http://zenodo.org/record/250559
Glue-on AdS holography for $T\bar T$-deformed CFTs
Creators: name: Apolo, Luis
name: Hao, Peng-Xiang
name: Lai, Wen-Xin
name: Song, Wei
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The $T\bar T$ deformation is a solvable irrelevant deformation whose properties depend on the sign of the deformation parameter $μ$. In particular, $T\bar T$-deformed CFTs with $μ<0$ have been proposed to be holographically dual to Einstein gravity where the metric satisfies Dirichlet boundary conditions at a finite cutoff surface. In this paper, we put forward a holographic proposal for $T\bar T$-deformed CFTs with $μ>0$, in which case the bulk geometry is constructed by gluing a patch of AdS$_3$ to the original spacetime. As evidence, we show that the $T\bar T$ trace flow equation, the spectrum on the cylinder, and the partition function on the torus and the sphere, among other results, can all be reproduced from bulk calculations in glue-on AdS$_3$.
description: 33 pages, 1 figure; v2: clarifications and references added, matches published version
The Orbital Stability of Planets Trapped in the First-Order Mean-Motion Resonances
Creators: name: Matsumoto, Yuji
name: Nagasawa, Makiko
name: Ida, Shigeru
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Many extrasolar planetary systems containing multiple super-Earths have been discovered. N-body simulations taking into account standard type-I planetary migration suggest that protoplanets are captured into mean-motion resonant orbits near the inner disk edge at which the migration is halted. Previous N-body simulations suggested that orbital stability of the resonant systems depends on number of the captured planets. In the unstable case, through close scattering and merging between planets, non-resonant multiple systems are finally formed. In this paper, we investigate the critical number of the resonantly trapped planets beyond which orbital instability occurs after disk gas depletion. We find that when the total number of planets ($N$) is larger than the critical number ($N_{\rm crit}$), crossing time that is a timescale of initiation of the orbital instability is similar to non-resonant cases, while the orbital instability never occurs within the orbital calculation time ($10^8$ Kepler time) for $N\leq N_{\rm crit}$. Thus, the transition of crossing time across the critical number is drastic. When all the planets are trapped in 7:6 resonance of adjacent pairs, $N_{\rm crit} = 4$. We examine the dependence of the critical number of 4:3, 6:5 and 8:7 resonance by changing the orbital separation in mutual Hill radii and planetary mass. The critical number increases with increasing the orbital separation in mutual Hill radii with fixed planetary mass and increases with increasing planetary mass with fixed the orbital separation in mutual Hill radii. We also calculate the case of a system which is not composed of the same resonance. The sharp transition of the stability can be responsible for the diversity of multiple super-Earths (non-resonant or resonant), that is being revealed by $Kepler$ mission.
description: accepted for publication in Icarus
Doping-induced magnetization plateaus
Creators: name: Frahm, Holger
name: Sobiella, Constantin
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1999
Subjects: subject: high magnetic fields
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The low-temperature magnetization process of antiferromagnetic spin- S chains doped with mobile spin- (S−1/2) carriers is studied in an exactly solvable model. For sufficiently high magnetic fields the system is in a metallic phase with a finite gap for magnetic excitations. In this phase, which exists for a large range of carrier concentrations x, the zero-temperature magnetization is determined by x alone. This leads to plateaus in the magnetization curve at a tunable fraction of the saturation magnetization. The critical behavior at the edges of these plateaus is studied in detail.
Universality of internal correlations of strongly interacting p-wave fermions in one-dimensional geometry
Creators: name: Kościk, Przemysław
name: Sowiński, Tomasz
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the many-body ground state of polarized fermions interacting via zero-range $\mathfrak{p}$-wave forces in a one-dimensional geometry. We rigorously prove that in the limit of infinite attractions spectral properties of any-order reduced density matrix describing arbitrary subsystem are completely independent of the shape of an external potential. It means that quantum correlations between any two subsystems are in this limit insensitive to the confinement. In addition, we show that the purity of these matrices quantifying the amount of quantum correlations can be obtained analytically for any number of particles without diagonalizing them. This observation may serve as a rigorous benchmark for other models and methods describing strongly interacting p-wave fermions.
description: Authors' version accepted for publication
Bayesian Approach to Micromechanical Parameter Identification Using Integrated Digital Image Correlation
Creators: name: Gaynutdinova, Liya
name: Rokoš, Ondřej
name: Havelka, Jan
name: Pultarová, Ivana
name: Zeman, Jan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: Materials with heterogeneous structures exhibit complex physical processes such as delamination, cracks, and plasticity, which require micromechanical parameters for understanding. However, identifying these parameters is challenging due to micro-macro length scale differences, ambiguity in boundary conditions, and required high resolution, among others. While the Integrated Digital Image Correlation (IDIC) method is widely used for this purpose, it suffers from sensitivity to boundary data errors and limited identification of parameters within well-posed problems. To address these issues, a Bayesian approach is proposed for micromechanical parameter identification using the Metropolis--Hastings Algorithm (MHA) to estimate probability distributions of bulk and shear moduli and boundary condition parameters. The proposed approach is compared to two versions of deterministic IDIC method under artificially introduced errors. Although MHA is computationally more expensive and in certain cases less accurate than BE-IDIC, it offers significant advantages, including the ability to optimize a large number of parameters, obtain statistical characterization and insights into individual parameter relationships. The paper highlights the benefits of the non-normalized approach to parameter identification with MHA, which significantly improves the robustness in handling boundary noise, compared to deterministic IDIC. The study considers a fiber-reinforced composite sample under plane strain assumption.
description: 33 pages, 18 figures
title: Overcoming C₆₀-induced interfacial recombination in inverted perovskite solar cells by electron-transporting carborane
Creators: name: Ye, Fangyuan
name: Zhang, Shuo
name: Warby, Jonathan
name: Wu, Jiawei
name: Gutierrez-Partida, Emilio
name: Lang, Felix
name: Shah, Sahil
name: Saglamkaya, Elifnaz
name: Sun, Bowen
name: Zu, Fengshuo
name: Shoaee, Safa
name: Wang, Haifeng
name: Stiller, Burkhard
name: Neher, Dieter
name: Zhu, Wei-Hong
name: Stolterfoht, Martin
name: Wu, Yongzhen
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 530 Physik
subject: 540 Chemie und zugeordnete Wissenschaften

description: Inverted perovskite solar cells still suffer from significant non-radiative recombination losses at the perovskite surface and across the perovskite/C60 interface, limiting the future development of perovskite-based single- and multi-junction photovoltaics. Therefore, more effective inter- or transport layers are urgently required. To tackle these recombination losses, we introduce ortho-carborane as an interlayer material that has a spherical molecular structure and a three-dimensional aromaticity. Based on a variety of experimental techniques, we show that ortho-carborane decorated with phenylamino groups effectively passivates the perovskite surface and essentially eliminates the non-radiative recombination loss across the perovskite/C60 interface with high thermal stability. We further demonstrate the potential of carborane as an electron transport material, facilitating electron extraction while blocking holes from the interface. The resulting inverted perovskite solar cells deliver a power conversion efficiency of over 23% with a low non-radiative voltage loss of 110 mV, and retain >97% of the initial efficiency after 400 h of maximum power point tracking. Overall, the designed carborane based interlayer simultaneously enables passivation, electron-transport and hole-blocking and paves the way toward more efficient and stable perovskite solar cells.
description: Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe; 1317
TAAT News: A quarterly publication of the technologies for African Agricultural Transformation (TAAT) Program. July – September 2019. vol 3
Creators: name: Atayi Opaluwah
Publisher: name: Gates Open Research
Year: 2021

description: The African Development Bank launched the Technologies for African Agriculture Transformation (TAAT) programme as part of the Bank’s Feed Africa strategy that is harnessing elite scientific research/technologies and disseminating at scale to African farmers. TAAT’s main objective is to improve the business of agriculture across Africa by raising agricultural productivity, mitigating risks and promoting diversification and processing in 18 agricultural value chains within eight Priority Intervention Areas (PIA). The programme increases agricultural productivity through the deployment of proven and high-performance agricultural technologies at scale along selected value chains.

 In this issue: TAAT Promotes Trailblazing Hybrid Rice Technology adapted to Africa, TAAT further excites Beninese farmers with Pro-Vitamin A cassava varieties. African Development Bank unveils Scale-Up Sourcebook TAAT partners IWMI & CIP to promote high-quality vine production in Malawi TAAT’s hybrid rice varieties elicit strong interest from the private sector and key stakeholders TAAT is strengthening the cassava seed sector through technology transfer TAAT showcases commitment to scaling technologies for digital growth in Africa School Feeding programmes provide an entry point for High Iron Beans (HIB) business ecosystem in Tanzania TAAT convenes cassava investment forum in Nigeria TAAT eyes $2.8bn additional food production for Africa TAAT’s footprint in Africa, its components and target beneficiaries.
TAAT News: A quarterly publication of technologies for African Agricultural Transformation (TAAT) Program. April – June 2019. Vol 2
Creators: name: Atayi Opaluwah
Publisher: name: Gates Open Research
Year: 2021

description: The African Development Bank launched the Technologies for African Agriculture Transformation (TAAT) programme as part of the Bank’s Feed Africa strategy that is harnessing elite scientific research/technologies and disseminating at scale to African farmers. TAAT’s main objective is to improve the business of agriculture across Africa by raising agricultural productivity, mitigating risks and promoting diversification and processing in 18 agricultural value chains within eight Priority Intervention Areas (PIA). The programme increases agricultural productivity through the deployment of proven and high-performance agricultural technologies at scale along selected value chains which include cassava.

 In this issue: TAAT builds resilience for maize productivity through scale-out of Fortenza Duo seed treatment technology 5th TAAT Programme Steering Committee meeting holds in Abidjan New Entrepreneurs emerge as TAAT deploys raised pond technology in Kenya TAAT targets food security in Mozambique through Maize Technologies TAAT establishes Platform for Cassava Seed Producers in Burundi TAAT seeks rice self-sufficiency in rice production through technologies Nigerian government partners TAAT on HQCF for Livestock feeds Sorghum and Millet: TAAT empowers farmers to increase yields TAAT: Leveraging technology for inclusive agripreneurship development in Africa Harmonised Regional Seed Regulation: TAAT collaborates with CORAF on implementation assessment Nigerian rice farmers to double income through double cropping ENABLE TAAT engages Togolese youths in agribusiness opportunities TAAT highlights agricultural transformation at Togolese farmers forum From Waste to Wealth: How cassava peels processing technology is improving livelihoods in Nigeria TAAT Program Components.
From valence fluctuations to long-range magnetic order in EuPd$_2$(Si$_{1-x}$Ge$_x$)$_2$ single crystals
Creators: name: Peters, Marius
name: Kliemt, Kristin
name: Ocker, Michelle
name: Wolf, Bernd
name: Puphal, Pascal
name: Tacon, Matthieu Le
name: Merz, Michael
name: Lang, Michael
name: Krellner, Cornelius
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: EuPd$_2$Si$_2$ is a valence-fluctuating system undergoing a temperature-induced valence crossover at $T'_V\approx160\,$K. We present the successful single crystal growth using the Czochralski method for the substitution series EuPd$_2$(Si$_{1-x}$Ge$_x$)$_2$, with substitution levels $x\leq 0.15$. A careful determination of the germanium content revealed that only half of the nominal concentration is build into the crystal structure. From thermodynamic measurements it is established that $T'_V$ is strongly suppressed for small substitution levels and antiferromagnetic order from stable divalent europium emerges for $x\gtrsim 0.10$. The valence transition is accompanied by a pronounced change of the lattice parameter $a$ of order 1.8%. In the antiferromagnetically ordered state below $T_N = 47$ K, we find sizeable magnetic anisotropy with an easy plane perpendicular to the crystallographic c direction. An entropy analysis revealed that no valence fluctuations are present for the magnetically ordered materials. Combining the obtained thermodynamic and structural data, we construct a concentration-temperature phase diagram demonstrating a rather abrupt change from a valence-fluctuating to a magnetically-ordered state in EuPd$_2$(Si$_{1-x}$Ge$_x$)$_2$.
Subaru weak-lensing measurement of a z = 0.81 cluster discovered by the Atacama Cosmology Telescope Survey
Creators: name: Miyatake, Hironao
name: Nishizawa, Atsushi J.
name: Takada, Masahiro
name: Mandelbaum, Rachel
name: Mineo, Sogo
name: Aihara, Hiroaki
name: Spergel, David N.
name: Bickerton, Steven J.
name: Bond, J. Richard
name: Hajian, Amir
name: Hilton, Matt
name: Hincks, Adam D.
name: Hughes, John P.
name: Infante, Leopoldo
name: Lin, Yen-Ting
name: Lupton, Robert H.
name: Marriage, Tobias A.
name: Marsden, Danica
name: Menanteau, Felipe
name: Miyazaki, Satoshi
name: Moodley, Kavilan
name: Niemack, Michael D.
name: Oguri, Masamune
name: Price, Paul A.
name: Reese, Erik D.
name: Sifon, Cristobal
name: Wollack, Edward J.
name: Yasuda, Naoki
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a Subaru weak lensing measurement of ACT-CL J0022.2-0036, one of the most luminous, high-redshift (z=0.81) Sunyaev-Zel'dovich (SZ) clusters discovered in the 268 deg^2 equatorial region survey of the Atacama Cosmology Telescope. For the weak lensing analysis using i'-band images, we use a model-fitting (Gauss-Laguerre shapelet) method to measure shapes of galaxy images, where we fit galaxy images in different exposures simultaneously to obtain best-fit ellipticities taking into account the different PSFs in each exposure. We also take into account the astrometric distortion effect on galaxy images by performing the model fitting in the world coordinate system. To select background galaxies behind the cluster at z=0.81, we use photometric redshift (photo-z) estimates for every galaxy derived from the co-added images of multi-passband Br'i'z'Y, with PSF matching/homogenization. After a photo-z cut for background galaxy selection, we detect the tangential weak lensing distortion signal with a total signal-to-noise ratio of about 3.7. By fitting a Navarro-Frenk-White model to the measured shear profile, we find the cluster mass to be M_200\barρ_m = [7.5^+3.2_-2.8(stat.)^+1.3_-0.6(sys.)] x 10^14 M_\odot/h. The weak lensing-derived mass is consistent with previous mass estimates based on the SZ observation, with assumptions of hydrostatic equilibrium and virial theorem, as well as with scaling relations between SZ signal and mass derived from weak lensing, X-ray, and velocity dispersion, within the measurement errors. We also show that the existence of ACT-CL J0022.2-0036 at z=0.81 is consistent with the cluster abundance prediction of the Λ-dominated cold dark matter structure formation model. We thus demonstrate the capability of Subaru-type ground-based images for studying weak lensing of high-redshift clusters.
description: 17 pages, 8 figures
Jacques Chamay und Jean-Louis Maier, Sculptures en pierre du Musee de Geneve, Band 1: Art Grec
Creators: name: Vermeule III., Cornelius C.
Publisher: name: Bonner Jahrbücher
Year: 2019

description: Rezension zu: Jacques Chamay und Jean-Louis Maier, Sculptures en pierre du Musée de Genève, Band 1: Art Grec. Verlag Philipp von Zabern, Mainz 1990. 113 Seiten, 88 Tafeln. - Band 2: Art Romain. Verlag Philipp von Zabern, Mainz 1989. 137 Seiten, 119 Tafeln.
description: Bonner Jahrbücher, Bd. 191.1991(1992): Bonner Jahrbücher
Density correlations in the half-filled Hubbard model
Creators: name: Eßler, F.H.L.
name: Frahm, Holger
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1999
Subjects: subject: Hubbard model
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We consider density-density correlations in the one-dimensional Hubbard model at half filling. On intuitive grounds one might expect them to exhibit an exponential decay. However, as has been noted recently, this is not obvious from the Bethe Ansatz/conformal field theory (BA/CFT) approach. We show that by supplementing the BA/CFT analysis with simple symmetry arguments one can easily prove that correlations of the lattice density operators decay exponentially.
Effect of electron thermal conductivity on resonant plasmonic detection in the metal/black-AsP/graphene FET terahertz hot-electron bolometers
Creators: name: Ryzhii, V.
name: Tang, C.
name: Otsuji, T.
name: Ryzhii, M.
name: Mitin, V.
name: Shur, M. S.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We analyze the two-dimensional electron gas (2DEG) heating by the incident terahertz (THz) radiation in the field-effect transistor (FET) structures with the graphene channels (GCs) and the black-phosphorus and black-arsenic gate barrier layers (BLs). Such GC-FETs can operate as bolometric THz detectors using the thermionic emission of the hot electrons from the GC via the BL into the gate. Due to the excitation of plasmonic oscillations in the GC by the THz signals, the GC-FET detector response can be pronouncedly resonant, leading to elevated values of the detector responsivity. The lateral thermal conductivity of the 2DEG can markedly affect the GC-FET responsivity, in particular, its spectral characteristics. This effect should be considered for the optimization of the GC-FET detectors.
description: 9 pages, 3 figures
MOESM1 of Occurrence and distribution of antibiotic resistance genes in the water and sediments of Qingcaosha Reservoir, Shanghai, China
Creators: name: Huang, Zhifeng
name: Zhao, Wanting
name: Xu, Ting
name: Zheng, Binghui
name: Yin, Daqiang
Publisher: name: figshare
Year: 2019
Subjects: subject: Space Science
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Additional file 1: Table S1. Primers used in quantitative PCR analysis. Table S2. Detection frequencies and absolute abundances of copy numbers for the target genes. Table S3. Correlation between relative abundance of ARGs in water. Table S4. Correlation between relative abundance of ARGs in sediment. Table S5. Water quality parameters of Qingcaosha Reservoir. Table S6. Correlation between ARGs and environmental factors in water. Figure S1. Seasonal variations in the relative abundance of ARGs in (a) water samples and (b) sediment samples from the Qingcaosha Reservoir. Figure S2. Relative abundance of ARGs in (a) water samples and (b) sediment samples from different sampling sites of the Qingcaosha Reservoir.
X-ray variations in the inner accretion flow of Dwarf Novae
Creators: name: Balman, Solen
name: Revnivtsev, Mikhail
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We show for five DN systems, SS Cyg, VW Hyi, RU Peg, WW Cet and T Leo that the UV and X-ray power spectra of their time variable light curves are similar in quiescence. All of them show a break in their power spectra, which in the framework of the model of propagating fluctuations indicates inner disk truncation. We derive the inner disk radii for these systems in a range (10-3)$\times10^{9}$ cm. We analyze the RXTE data of SS Cyg in outburst and compare it with the power spectra, obtained during the period of quiescence. We show that during the outburst the disk moves towards the white dwarf and recedes as the outburst declines. We calculate the correlation between the simultaneous UV and X-ray light curves of the five DN studied in this work, using the XMM-Newton data obtained in the quiescence and find X-ray time lags of 96-181 sec. This can be explained by the travel time of matter from a truncated inner disk to the white dwarf surface. We suggest that, in general, DN may have truncated accretion disks in quiescence which can also explain the UV and X-ray delays in the outburst stage and that the accretion may occur through coronal flows in the disk (e.g., rotating accretion disk coronae). Within a framework of the model of propagating fluctuations the comparison of the X-ray/UV time lags observed by us in the case of DN systems with those, detected for a magnetic Intermediate Polar allows us to make a rough estimate of the viscosity parameter $α\sim0.25$ in the innermost parts of the accretion flow of DN systems.
description: 10 pages, 11 figures; accepted for publication in A&A as it stands
Optimal control of distributed ensembles with application to Bloch equations
Creators: name: Chertovskih, Roman
name: Pogodaev, Nikolay
name: Staritsyn, Maxim
name: Aguiar, Antonio Pedro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optimization and Control (math.OC)
subject: Medical Physics (physics.med-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 49K20, 93C20, 35L65

description: Motivated by the problem of designing robust composite pulses for Bloch equations in the presence of natural perturbations, we study an abstract optimal ensemble control problem in a probabilistic setting with a general nonlinear performance criterion. The model under study addresses mean-field dynamics described by a linear continuity equation in the space of probability measures. For the resulting optimization problem, we derive an exact representation of the increment of the cost functional in terms of the flow of the driving vector field. Relying on the exact increment formula, a descent method is designed that is free of any internal line search. The numerical method is applied to solve new control problems for distributed ensembles of Bloch equations.
Mesino Oscillation in MFV SUSY
Creators: name: Berger, Joshua
name: Csáki, Csaba
name: Grossman, Yuval
name: Heidenreich, Ben
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: R-parity violating supersymmetry in a Minimal Flavor Violation paradigm can produce same-sign dilepton signals via direct sbottom-LSP pair production. Such signals arise when the sbottom hadronizes and the resulting mesino oscillates into an anti-mesino. The first bounds on the sbottom mass are placed in this scenario using current LHC results.
description: 14 pages, 6 figures
Correlation functions of one-dimensional Bose-Fermi mixtures
Creators: name: Frahm, Holger
name: Palacios, Guillaume
Publisher: name: College Park (Maryland) : American Physical Society
Year: 2005
Subjects: subject: Bose-Fermi mixture
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We calculate the asymptotic behavior of correlators as a function of the microscopic parameters for an integrable Bose-Fermi mixture with repulsive interaction in one dimension. For two cases, namely polarized and unpolarized fermions the singularities of the momentum distribution functions are characterized as a function of the coupling constant and the relative density of bosons.
Revisiting the Friedberg-Lee-Sirlin soliton model
Creators: name: Heeck, Julian
name: Sokhashvili, Mikheil
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: Non-topological solitons are localized classical field configurations stabilized by a Noether charge. Friedberg, Lee, and Sirlin proposed a simple renormalizable soliton model in their seminal 1976 paper, consisting of a complex scalar field that carries the Noether charge and a real-scalar mediator. We revisit this model, point out commonalities and differences with Q-ball solitons, and provide analytic approximations to the underlying differential equations.
description: 9 pages, matches EPJC version
Dimensionality controlled Mott transition and correlation effects in single- and bi-layer perovskite iridates
Creators: name: Wang, Q.
name: Cao, Y.
name: Waugh, J. A.
name: Park, S. R.
name: Qi, T. F.
name: Korneta, O. B.
name: Cao, G.
name: Dessau, D. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We studied Sr2IrO4 and Sr3Ir2O7 using angle-resolved photoemission spectroscopy (ARPES), making direct experimental determinations of intra- and inter-cell coupling parameters as well as Mott correlations and gap sizes. The results are generally consistent with LDA+U+Spin-orbit coupling (SOC) calculations, though the calculations missed the momentum positions of the dominant electronic states and neglected the importance of inter-cell coupling on the size of the Mott gap. The calculations also ignore the correlation-induced spectral peak widths, which are critical for making a connection to activation energies determined from transport experiments. The data indicate a dimensionality-controlled Mott transition in these 5d transition-metal oxides (TMOs).
description: 18 pages, 5 figures
Cynoglossidae
Creators: name: Fricke, Ronald
name: Allen, Gerald R.
name: Andréfouët, Serge
name: Chen, Wei-Jen
name: Hamel, Mélanie A.
name: Laboute, Pierre
name: Mana, Ralph
name: Hui, Tan Heok
name: Uyeno, Daisuke
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Pleuronectiformes
Cynoglossidae

description: Cynoglossidae    Cynoglossus interruptus Günther, 1880  —Genko sole
 STATUS AT MADANG. New record from Madang, based on a specimen collected by W.-J. Chen, St. PD 72. NTUM material (NTUM 10148).
DISTRIBUTION AND HABITAT. Philippines north to Japan, south to New Guinea. Found on soft bottoms of the continental shelf, 150 m. Marine.
  Cynoglossus lida (Bleeker, 1851)  —Java sole
 STATUS AT MADANG. New record from Madang, based on a specimen collected by W.-J. Chen, St. PD 72. NTUM material (NTUM 10135).
DISTRIBUTION AND HABITAT. East Africa east to Philippines and New Guinea. Found on soft bottoms of the continental shelf, 3– 30 m. Marine.
  Cynoglossus puncticeps Richardson, 1844  —Spotted tongue sole
 STATUS AT MADANG. New record from Madang, based on a specimen collected by W.-J. Chen, St. CP-3968. AMS and NTUM material (AMS I.16749-003; NTUM 10066).
DISTRIBUTION AND HABITAT. India east to Philippines and New Guinea, north to South China Sea. Benthic on sand and mud bottoms of the continental shelf, entering estuaries and lower reaches of rivers and streams, 1– 140 m. Freshwater, transitional water and marine.
  Symphurus bathyspilus Krabbenhoft & Munroe, 2003  —Deepwater tonguesole STATUS AT MADANG. New record from Madang, based on a specimen collected by W.-J. Chen, St. CP 3964. NTUM material (NTUM 10072).
DISTRIBUTION AND HABITAT. Eastern Indonesia east to Philippines and New Guinea. Benthic on soft bottoms, 248– 500 m. Marine.
description: Published as part of Fricke, Ronald, Allen, Gerald R., Andréfouët, Serge, Chen, Wei-Jen, Hamel, Mélanie A., Laboute, Pierre, Mana, Ralph, Hui, Tan Heok & Uyeno, Daisuke, 2014, Checklist of the marine and estuarine fishes of Madang District, Papua New Guinea, western Pacific Ocean, with 820 new records, pp. 1-247 in Zootaxa 3832 (1) on pages 191-192, DOI: 10.11646/zootaxa.3832.1.1, http://zenodo.org/record/250559
Electronic Ladders with SO(5) Symmetry: Phase Diagrams and Correlations at halflling
Creators: name: Frahm, Holger
name: Stahlsmeier, Martin
Publisher: name: College Park (Maryland) : American Physical Society
Year: 2001
Subjects: subject: electronic-ladder models
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We construct a family of electronic-ladder models with SO(5) symmetry that have exact ground states in the form of finitely correlated wave functions. Extensions for these models preserving this symmetry are studied using these states in a variational approach. Within this approach, the zero-temperature phase diagram of these electronic ladders at half filling is obtained, reproducing the known results in the weak coupling (band insulator) and strong-coupling regime, first studied by Scalapino, Zhang, and Hanke. Finally, the compact form of the variational wave functions allows us to compute various correlation functions for these systems.
X-raying hot plasma in solar active regions with the SphinX spectrometer
Creators: name: Miceli, M.
name: Reale, F.
name: Gburek, S.
name: Terzo, S.
name: Barbera, M.
name: Collura, A.
name: Sylwester, J.
name: Kowalinski, M.
name: Podgorski, P.
name: Gryciuk, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The detection of very hot plasma in the quiescent corona is important for diagnosing heating mechanisms. The presence and the amount of such hot plasma is currently debated. The SphinX instrument on-board CORONAS-PHOTON mission is sensitive to X-ray emission well above 1 keV and provides the opportunity to detect the hot plasma component. We analyzed the X-ray spectra of the solar corona collected by the SphinX spectrometer in May 2009 (when two active regions were present). We modelled the spectrum extracted from the whole Sun over a time window of 17 days in the 1.34-7 keV energy band by adopting the latest release of the APED database. The SphinX broadband spectrum cannot be modelled by a single isothermal component of optically thin plasma and two components are necessary. In particular, the high statistics and the accurate calibration of the spectrometer allowed us to detect a very hot component at ~7 million K with an emission measure of ~2.7 x 10^44 cm^-3. The X-ray emission from the hot plasma dominates the solar X-ray spectrum above 4 keV. We checked that this hot component is invariably present both at high and low emission regimes, i.e. even excluding resolvable microflares. We also present and discuss a possible non-thermal origin (compatible with a weak contribution from thick-target bremsstrahlung) for this hard emission component. Our results support the nanoflare scenario and might confirm that a minor flaring activity is ever-present in the quiescent corona, as also inferred for the coronae of other stars.
description: 6 pages, 5 figures. Accepted for publication in A&A