cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Investigation of Anti-atopic Dermatitis Activity of Oroxylum indicum Extract Incorporated Cream
Creators: name: Trang, Do Hoang Thu
name: Son, Hoang Le
Publisher: name: Zenodo
Year: 2021
Subjects: 2,4-dinitrochlorobenzene
Oroxylum indicum bark extract
dermatitis score
scratching behavior
histological alterations
medicinal plant

description: Aims: The search for plant-based treatments against atopic dermatitis (AD), a relapsing dermatological condition with high prevalence in tropical regions, has always been attracting special attention. Among many folk remedies for AD, Oroxylum indicum Linn (Bignoniaceae) is a commonly used medicinal plant whose effectiveness has not yet been scientifically reported. This study thus aimed to investigate the anti-AD activity of ethyl acetate extract from the bark of Oroxylum indicum. The plant, known as midnight horror or Indian trumpet flower plant distributed throughout different areas of Southeast Asia. Methodology: Five cream formulations containing Oroxylum indicum ethyl acetate bark extract in different concentrations (0%, 1.25%, 2.5%, 3.75%, and 5%) were topically applied onto the dorsal skin of 2,4-dinitrochlorobenzene-sensitized BALB/C mice once a day during 6 weeks. Phosphate-Buffered Saline (PBS) and Protopic (Tacrolimus 0.1%) were used as negative and positive control, respectively. All mice were subjected to the assessment of AD-like symptoms including the development of eczematous skin lesions, intensity of pruritus and histological alterations. Results: The plant extract at 5% was significantly effective in suppressing the dermatitis scores by 23.26% (n=6, p<0.001) and scratching frequency by 34.86% (n=6, p<0.001) compared to the negative control while markedly reducing the signs of parakeratosis, hyperplasia, spongiosis, acanthosis, as well as the epidermal and dermal thickness in immunized mice. Conclusion: These results confirmed the inhibitory effect of Oroxylum indicum on the advance of AD at 5% when incorporated into a cream formulation and revealed the plant’s therapeutic potential in the approach to disease treatment. However, more studies on the immunosuppressive mechanism of the extract and the interplaying roles of main phytocomponents should ultimately support the utilization of this valuable medicinal plant.
Dielectric nanostructures for control of electromagnetic waves
Creators: name: Shibanuma, Toshihiko
Publisher: name: Imperial College London
Year: 2017

description: High refractive index dielectric nanoantennas have emerged as a promising unit for improving optical nanodevices by compensating the drawbacks of plasmonic nanoantennas, which have played a key role in nanophotonics to date. The features of high refractive index dielectric nanoantennas, such as low energy losses, excitation of strong magnetic resonances and enhancement of electric field inside and outside the particle, are expected to provide novel methods to manipulate electromagnetic waves in the nanometer scale. In this thesis, we theoretically explore and experimentally demonstrate a variety of nanostructures based on high refractive index dielectric nanoantennas to aim at the efficient and tuneable control of electromagnetic waves in linear and nonlinear manners. Firstly, asymmetric Si dimers are investigated to achieve unidirectional forward scattering with high efficiency. An electric or magnetic dipole mode is excited in each particle constituting the asymmetric dimer at the same wavelength. The interference between these two dipolar modes can direct the scattered field selectively into the forward direction with high scattering efficiency. Secondly, we investigate metasurfaces built of array of Si nanodimers to obtain switching from high transmission to reflection depending on the incident polarization. The different linear polarization direction of the incident light can alter the hybridization modes of the constituent Si dimers and, hence, the effective permittivity and permeability of the metasurface. The resulted overlap and separation of the electric and magnetic dipolar resonances facilitates the control over the switching between high transmission and reflection. Thirdly, asymmetric Si dimers are explored to obtain tuneable control of directional scattering either in the left or right direction from the incident axis. Our theoretical analysis reveals that the electric or magnetic dipoles excited perpendicular to the dimer axis are mainly responsible for the tuneable scattering. Experimental demonstration of the scattering tuneability is carried out along the substrate by using back focal plane techniques combined with a prism coupling setup. Fourthly, we show that the third harmonic generation from a high refractive index dielectric nanoantenna can be significantly improved by adding a metallic component to build a metal-dielectric hybrid nanostructure. In this way, the plasmonic resonance of a Au nanoring can boost the anapole mode excited in a Si nanodisk, strongly enhancing the electric field inside the Si nanodisk. As a result, high third harmonic intensity and conversion efficiency can be achieved even in nanometer scale. Our findings on how we can attain the efficient and tuneable control of electromagnetic waves using high refractive index dielectric nanostructures will contribute to opening the new paths towards the realization of novel optical nanodevices.
Non-minimal Elliptic Threefolds at Infinite Distance I: Log Calabi-Yau Resolutions
Creators: name: Álvarez-García, Rafael
name: Lee, Seung-Joo
name: Weigand, Timo
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study infinite-distance limits in the complex structure moduli space of elliptic Calabi-Yau threefolds. In F-theory compactifications to six dimensions, such limits include infinite-distance trajectories in the non-perturbative open string moduli space. The limits are described as degenerations of elliptic threefolds whose central elements exhibit non-minimal elliptic fibers, in the Kodaira sense, over curves on the base. We show how these non-crepant singularities can be removed by a systematic sequence of blow-ups of the base, leading to a union of log Calabi-Yau spaces glued together along their boundaries. We identify criteria for the blow-ups to give rise to open chains or more complicated trees of components and analyse the blow-up geometry. While our results are general and applicable to all non-minimal degenerations of Calabi-Yau threefolds in codimension one, we exemplify them in particular for elliptic threefolds over Hirzebruch surface base spaces. We also explain how to extract the gauge algebra for F-theory probing such reducible asymptotic geometries. This analysis is the basis for a detailed F-theory interpretation of the associated infinite-distance limits that will be provided in a companion paper.
description: 62+72 pages, 20 figures; v2: typos corrected, matches published version
Development of atmospheric inversions to evaluate fossil fuel CO2 emissions in California
Creators: name: Brophy, Kieran
Publisher: name: Imperial College London
Year: 2018

description: The aim of this thesis is to explore the use of atmospheric inversions to quantify emissions of fossil fuel CO2 (ffCO2) for the U.S. state of California and assess its implications for the monitoring and verification of emissions. California is of particular interest to atmospheric inversion studies of ffCO2 due to a combination of its ambitious emissions reduction legislation and high density greenhouse gas measurement network. First I examine uncertainties associated with inventories of ffCO2 emissions that inform prior uncertainty in the inversion. Next I investigate potential errors and uncertainties related to the spatial and temporal representation of ffCO2 emissions, and modelled atmospheric transport. To do this I perform simulation experiments based on a network of groundbased observations of CO2 concentration and radiocarbon in CO2, a tracer of ffCO2, by combining prior emissions and transport models, currently used in many atmospheric studies. Finally, as nearly all national and sub national climate change mitigation policies target economic sector specific emissions reductions, I investigate the development of a novel inversion approach that optimizes emissions by sector. My results show that although an atmospheric inversion of ffCO2 in California can reduce a hypothetical bias in the magnitude of prior emissions estimates, uncertainties in ffCO2 estimates arising from the choice of prior emissions or atmospheric transport model are on the order of 15% or less of state-total emissions for the ground-based network in California we consider. The need for temporal variations to be included in prior emissions is highlighted along with continuing efforts to evaluate and improve the representation of atmospheric transport for regional ffCO2 inversions. I conclude that further work on establishing relationships between emissions sectors and trace gases is required for the successful monitoring of sector specific ffCO2 emissions.
A Hot Spot in Coma
Creators: name: Donnelly, R. Hank
name: Markevitch, M.
name: Forman, W.
name: Jones, C.
name: Churazov, E.
name: Gilfanov, M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the temperature structure of the central part (r<18' ~0.7 h50**-1 Mpc) of the Coma cluster of galaxies using ASCA data. Two different analysis methods produce results in good agreement with each other and reveal the presence of interesting structures in the gas temperature distribution. Globally, the average temperature in the center of the cluster is 9.0 +/- 0.6 keV in good agreement with previous results. Superimposed on this, we find a cool area with temperatures of 4-6 keV associated with a filament of X-ray emission extending southeast from the cluster center detected by Vikhlinin and coworkers. We also find a hot spot with a temperature of around 13 keV displaced north from the central peak of emission. The distribution of the gas temperatures and relative specific entropies suggests that the cool features are most likely gas stripped from a galaxy group centered on NGC 4874 falling toward the core from outside, while the hot spot located ``ahead'' of this in-falling gas is due to shock heating. Thus our results suggest that we are observing Coma during a minor merger with a small group of galaxies associated with NGC 4874 shortly before the initial core passage.
description: 5 pages, 2 figures, accepted for publication in the Astrophysical Journal
Weak-field limit and regular solutions in polynomial higher-derivative gravities
Creators: name: Giacchini, Breno L.
name: Netto, Tibério de Paula
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the present work we show that, in the linear regime, gravity theories with more than four derivatives can have remarkable regularity properties if compared to their fourth-order counterparts. To this end, we derive the expressions for the metric potentials associated to a pointlike mass in a general higher-order gravity model in the Newtonian limit. It is shown that any polynomial model with at least six derivatives in both spin-2 and spin-0 sectors has regular curvature invariants. We also discuss the dynamical problem of the collapse of a small mass, considered as a spherical superposition of nonspinning gyratons. Similarly to the static case, for models with more than four derivatives the Kretschmann invariant is regular during the collapse of a thick null shell. We also verify the existence of the mass gap for the formation of mini black holes even if complex and/or degenerate poles are allowed, generalizing previous considerations on the subject and covering the case of Lee-Wick gravity. These interesting regularity properties of sixth- and higher-derivative models at the linear level reinforce the question of whether there can be nonsingular black holes in the full nonlinear model.
description: 37 pages. References added, some misprints corrected; matches the version published in EPJC
4-N-(7-Chloroquinolin-4-yl)-1-N,1-N-diethyl petane-1,4-diamine Ti Complex: Synthesis and Characterization
Creators: name: I. E. Otuokere
name: L. O. Okpara
name: K. C. Amadi
name: C. O. Alisa
name: A. Okoyeagu
name: F. C. Nwadire
Publisher: name: Zenodo
Year: 2021
Subjects: Coordination
ligand
spectrum
malaria
chloroquine
titanium

description: Aims: Chloroquine is a member of the drug class 4-aminoquinoline used for the prevention and treatment of malaria in areas where malaria is known to be sensitive to its effects. Most metals are capable of forming covalent bonds with carbon, resulting in metal-organic compounds. Our aim is to synthesize the chloroquine – titanium complex and to study its coordination behavior. Place and Duration of Study: Department of Chemistry, Michael Okpara University of Agriculture, Umudike, 2019. Methodology: Ti(II) complex of chloroquine was synthesized by the reaction of chloroquine phosphate with titanium(IV) oxide. The metal complex was characterized based on UV, IR and 1H NMR Spectroscopy. Results: The UV spectrum of the complex suggested intra ligand charge transfer (ILCT), ligand to metal charge transfer (LMCT), and d-d transition. The IR spectrum of the complex showed the involvement of amine and imine group in coordination to Ti. This showed that chloroquine acted as a bidentate ligand. 1H NMR of the spectrum further showed the involvement of the amine group in coordination. Conclusion: The ability of chloroquine to sequestrate Ti (II) ion has been assured. This drug can be used to chelate Ti ions from solution, environment, and biological system.
Integrated modelling framework for the analysis of demand side management strategies in urban energy systems
Creators: name: Bustos Turu, Gonzalo
Publisher: name: Imperial College London
Year: 2018

description: Influenced by environmental concerns and rapid urbanisation, cities are changing the way they historically have produced, distributed and consumed energy. In the next decades, cities will have to increasingly adapt their energy infrastructure if new low carbon and smart technologies are to be effectively integrated. In this context, advanced planning tools can become crucial to successfully design these future urban energy systems. However, it is not only important to analyse how urban energy infrastructure will look like in the future, but also how they will be operated. Advanced energy management strategies can increase the operational efficiency, therefore reducing energy consumption, CO2 emissions, operational costs and network investments. However, the design and analysis of these energy management strategies are difficult to perform at an urban scale considering the spatial and temporal resolution and the diversity in users energy requirements. This thesis proposes a novel integrated modelling framework to analyse flexible transport and heating energy demand and assess different demand-side management strategies in urban energy systems. With a combination of agent-based simulation and multi-objective optimisation models, this framework is tested using two case studies. The first one focuses on transport electrification and the integration of electric vehicles through smart charging strategies in an urban area in London, UK. The results of this analysis show that final consumer costs and carbon emissions reductions (compared to a base case) are in the range of 4.3-45.0% and 2.8-3.9% respectively in a daily basis, depending on the type of tariff and electricity generation mix considered. These reductions consider a control strategy where the peak demand is constrained so the capacity of the system is not affected. In the second case study, focused on heat electrification, the coordination of a group of heat pumps is analysed, using different scheduling strategies. In this case, final consumer costs and carbon emissions can be reduced in the range of 4-41% and 0.02-0.7% respectively on a daily basis. In this case, peak demand can be reduced in the range of 51-62% with respect to the baseline. These case studies highlight the importance of the spatial and temporal characterisation of the energy demand, and the level of flexibility users can provide to the system when considering a heterogeneous set of users with different technologies, energy requirements and behaviours. In both studies, trade-offs between the environmental and economic performance of demand-side management strategies are assessed using a multi-objective optimisation approach. Finally, further applications of the integrated modelling framework are described to highlight its potential as a decision-making support tool in sustainable and smart urban energy systems.
Copper pseudohalides as solution-processable hole-transport materials for opto/electronic applications
Creators: name: Wijeyasinghe, Nilushi
Publisher: name: Imperial College London
Year: 2018

description: This thesis presents the development of novel copper pseudohalide hole-transport layers (HTLs) for thin-film transistors (TFTs), organic photovoltaic (OPV) cells, perovskite solar cells (PSCs), and organic light-emitting diodes (OLEDs). Their impact on device performance is assessed relative to two reference HTLs: a conventional polymer HTL, and copper(I) thiocyanate (CuSCN) deposited via an n-alkyl sulphide solvent (diethyl sulphide, DES). The first experimental chapter demonstrates aqueous ammonia (NH3 (aq)) as a novel processing solvent for CuSCN, which produces HTLs with greatly enhanced electronic and structural properties. CuSCN/NH3 HTLs exhibit exceptional anode planarisation properties and mean field-effect hole mobility (µ) of 0.05 cm2 V-1 s-1. OPV cells and PSCs employing a CuSCN/NH3 HTL consistently outperform devices utilising a reference HTL by achieving maximum power conversion efficiency of 10.7% (OPV) and 17.5% (PSC). Next, a fluorinated fullerene (C60F48) is utilised as a p-dopant for CuSCN/DES. Analysis of material and device characterisation data reveal strong evidence of a successful p-doping process. Mean µ of 0.12 cm2 V-1 s-1 is measured in TFTs based on CuSCN:C60F48 (0.5 mol%), which is a twelvefold increase relative to pristine CuSCN. Additional advantages include an order of magnitude reduction in contact resistance, a dramatic increase in bias stability, and a change in the dominant hole-transport mechanism from trap limited conduction to percolation conduction. Optimised CuSCN:C60F48 HTLs also outperform reference HTLs in OPV applications; substantial increases in fill factor and device yield are observed. Finally, the third experimental chapter reports on a novel wide-bandgap (≥3.1 eV) p-type semiconductor, copper(I) selenocyanate (CuSeCN). Its electronic, structural and optical properties are predicted using density functional theory calculations and verified using numerous experimental techniques. CuSeCN/DES layers annealed at 140 ˚C exhibit excellent performance in TFTs, OPV cells, and OLEDs. Hence, this thesis demonstrates the tremendous potential of copper pseudohalides as universal HTLs for opto/electronics.
Random neural networks for deep learning
Creators: name: Yin, Yonghua
Publisher: name: Imperial College London
Year: 2018

description: The random neural network (RNN) is a mathematical model for an ``integrate and fire'' spiking network that closely resembles the stochastic behaviour of neurons in mammalian brains. Since its proposal in 1989, there have been numerous investigations into the RNN's applications and learning algorithms. Deep learning (DL) has achieved great success in machine learning, but there has been no research into the properties of the RNN for DL to combine their power. This thesis intends to bridge the gap between RNNs and DL, in order to provide powerful DL tools that are faster, and that can potentially be used with less energy expenditure than existing methods. Based on the RNN function approximator proposed by Gelenbe in 1999, the approximation capability of the RNN is investigated and an efficient classifier is developed. By combining the RNN, DL and non-negative matrix factorisation, new shallow and multi-layer non-negative autoencoders are developed. The autoencoders are tested on typical image datasets and real-world datasets from different domains, and the test results yield the desired high learning accuracy. The concept of dense nuclei/clusters is examined, using RNN theory as a basis. In dense nuclei, neurons may interconnect via soma-to-soma interactions and conventional synaptic connections. A mathematical model of the dense nuclei is proposed and the transfer function can be deduced. A multi-layer architecture of the dense nuclei is constructed for DL, whose value is demonstrated by experiments on multi-channel datasets and server-state classification in cloud servers. A theoretical study into the multi-layer architecture of the standard RNN (MLRNN) for DL is presented. Based on the layer-output analyses, the MLRNN is shown to be a universal function approximator. The effects of the layer number on the learning capability and high-level representation extraction are analysed. A hypothesis for transforming the DL problem into a moment-learning problem is also presented. The power of the standard RNN for DL is investigated. The ability of the RNN with only positive parameters to conduct image convolution operations is demonstrated. The MLRNN equipped with the developed training algorithm achieves comparable or better classification at a lower computation cost than conventional DL methods.
Modelling the enhancement of spectrally broadband extraction efficiency of emission from single InAs/InP quantum dots at telecommunication wavelengths
Creators: name: Mrowiński, Paweł
name: Sęk, Grzegorz
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Hereby, we present results of finite-difference time-domain simulations of technologically undemanding photonic structures offering a significant improvement in the spectrally broad extraction efficiency of emission from a quantum emitter at the third telecommunication window. The modelling is performed for cylindrical and cuboidal mesa structures containing an exciton confined in a single InAs/InP quantum dot. We investigate the emission pattern from such mesas made of InP (which can be exchanged with AlGaInAs lattice-matched to InP) for two cases: monolithic InP material or InP/AlGaInAs distributed Bragg reflector (DBR) underneath the mesa. The calculations are performed as a function of geometrical parameters, i.e. mesa shape and dimensions, and the emitter position. For the case with the DBR, we obtain extraction efficiencies above 25% (for a numerical aperture of 0.4 of a common optical detection system), which also exhibits weak spectral dependence - values above 20% can be obtained in the range of 60 nm around 1550 nm. When the numerical aperture is increased to 0.9, extraction efficiencies about 45% are reachable within the proposed solution. The extraction efficiency is rather weakly sensitive to the in-plane dipole alignment (in the range of 100-200 nm), however, it is more susceptible to even slight changes in its vertical position or to mesa sizes. Eventually, we also comment on the Purcell effect in such weak photonic confinement structures, influence of which on the source brightness is not negligible in some cases.
description: 11 pages, 7 figures
Role of thyroid hormone receptor alpha in susceptibility and progression of osteoarthritis
Creators: name: Waung, Julian
Publisher: name: Imperial College London
Year: 2018

description: Osteoarthritis (OA) is a debilitating joint disease characterised by articular cartilage damage, chondrocyte hypertrophy and subchondral bone changes. Thyroid hormone (TH) regulates chondrocyte differentiation, endochondral ossification and bone maintenance, acting mainly through thyroid hormone receptor alpha (TRα). Genetic, pathological and experimental data have implicated a role for TH availability in OA pathogenesis. I hypothesised that inhibition of TH signalling will decrease susceptibility to OA and delay disease progression. Osteoarthritis was assessed in mice treated with dronedarone (a TRα antagonist), TRα knockouts (TRα0/0) or wild type controls 4, 8 and 16 weeks after joint destabilisation surgery (DMM). Overall, articular cartilage damage was not reduced in either mutant or dronedarone treated mice but the studies were underpowered. Subchondral bone mineral content (BMC) in sham operated knees was increased in mutants but reduced with dronedarone treatment. Destabilising surgery increased subchondral BMC and mass but changes were attenuated in mutant and dronedarone treated mice. Mutant mice lacking iodothyronine deiodinase type 2 (D2KO) that are unable to activate thyroid hormone locally were investigated for OA development with ageing. Mutants had no change in cartilage damage but had increased subchondral BMC. TRα was further investigated as an osteoporosis drug target. Significantly, dronedarone increased femoral cortical thickness and BMC but did not affect bone strength. These results suggest a regulatory role for TH in subchondral bone remodelling. The absence of chondroprotection suggest that any potential role of TH in osteoarthritis pathogenesis may be mediated via subchondral bone. Further adequately powered studies with dronedarone are needed to confirm cartilage and bone observations and should include mechanistic studies to explain subchondral bone changes. Further experiments using established models of osteoporosis and more sensitive measures of bone strength should be used to confirm TRα as a novel drug target for osteoporosis.
Trochilus tomineo Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Apodiformes
Trochilidae
Trochilus
Trochilus tomineo

description: Trochilus tomineo [spec. nov.]
T. rectricibus subaequalibus basi ferrugineis apice albis, corpore supra fusco subtus albo. Mus. Ad. Fr. 2. p.
Ourissia s. Tomineo. Clus. exot. 96.
Habitat in America.
Hanc feminam T. colubris (6.) putat Edw. av. t. 38.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 121, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
Fine-grained Conversational Decoding via Isotropic and Proximal Search
Creators: name: Yao, Yuxuan
name: Wu, Han
name: Xu, Qiling
name: Song, Linqi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: General-purpose text decoding approaches are usually adopted for dialogue response generation. Although the quality of the generated responses can be improved with dialogue-specific encoding methods, conversational decoding methods are still under-explored. Inspired by \citet{wu2023learning} that a good dialogue feature space should follow the rules of locality and isotropy, we present a fine-grained conversational decoding method, termed \textit{isotropic and proximal search (IPS)}. Our method is designed to generate the semantic-concentrated response, while still maintaining informativeness and discrimination against the context. Experiments show that our approach outperforms existing decoding strategies in the dialogue field across both automatic and human evaluation metrics. More in-depth analyses further confirm the effectiveness of our approach.
description: Accepted to EMNLP 2023 Main Conference
Rethinking Semi-Supervised Imbalanced Node Classification from Bias-Variance Decomposition
Creators: name: Yan, Liang
name: Wei, Gengchen
name: Yang, Chen
name: Zhang, Shengzhong
name: Huang, Zengfeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper introduces a new approach to address the issue of class imbalance in graph neural networks (GNNs) for learning on graph-structured data. Our approach integrates imbalanced node classification and Bias-Variance Decomposition, establishing a theoretical framework that closely relates data imbalance to model variance. We also leverage graph augmentation technique to estimate the variance, and design a regularization term to alleviate the impact of imbalance. Exhaustive tests are conducted on multiple benchmarks, including naturally imbalanced datasets and public-split class-imbalanced datasets, demonstrating that our approach outperforms state-of-the-art methods in various imbalanced scenarios. This work provides a novel theoretical perspective for addressing the problem of imbalanced node classification in GNNs.
description: Accepted by NeurIPS 2023
title: ADCO, Cartulaire de Fontenay, second fragment (XIIIe siècle), Cart. 201 (15 H 9), folios 47-142, f. 065r
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2009
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge
subject: cartulaire
subject: LaMOP

description: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142. Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cartulaire de Fontenay, second fragment (XIIIe siècle), Archives départementales de la Côte-d'Or, Cart. 201 (15 H 9), folios 47-142, f. 065r, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https:// manuscrits.cbma-project.eu/
description: Provenance: abbaye de Fontenay
description: Provenance: http://www.wikidata.org/entity/Q464918
description: Provenance: https://catalogue.bnf.fr/ark:/12148/cb119679755
description: Provenance: https://www.geonames.org/7874015
description: Provenance: http://www.idref.fr/027691802/id
Forschungsdaten organisieren und publizieren (8. Publication Week)
Creators: name: Beer, Anna
Publisher: name: Zenodo
Year: 2024
Subjects: Datenpublikation
FAIR
Forschungsdatenmanagement
Open Science
Research Data Management
Universitätsbibliothek

description: Workshop mit Anna Beer (Universitätsbibliothek Hildesheim) online am 04. März 2024, 10–12:30 Uhr

Den Überblick über die in einem Forschungsvorhaben genutzten Daten zu behalten, kann eine Herausforderung darstellen. Hierbei hilft ein strukturierter Umgang mit den Forschungsdaten, das Forschungsdatenmanagement. Wie organisiere ich meine Forschungsdaten? Wie dokumentiere ich meine Ergebnisse? Warum sollte ich meine Daten veröffentlichen?

Der Workshop thematisiert folgende Aspekte

Strukturierter Datenumgang mithilfe eines Datenmanagementplans

Gute wissenschaftliche Praxis und FAIR-Prinzipien

Rechtliches zu Datenschutz, Urheberrecht und Lizenzen

Publikationsorte für Forschungsdaten

Der Workshop wurde im Rahmen der 8. Publication Week vom 04.–08. März 2024 an der Universität Hildesheim angeboten.Publication Week ist eine Workshop-Reihe der Universitätsbibliothek und des Graduiertenzentrums.https://www.uni-hildesheim.de/bibliothek/ueber-uns/veranstaltungen/publication-week/
The Single-Degenerate Scenario for Type Ia SNe in Cosmic Perspective
Creators: name: Canal, R.
name: Ruiz-Lapuente, P.
name: Burkert, A.
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The occurrence and properties of Type Ia supernovae (SNe Ia) in single-degenerate binary systems (white dwarf [WD] + nondegenerate companion) is examined for galaxies of different types, and as a function of redshift. The rates and characteristics (peak luminosities, expansion velocities of the ejecta) expected from the explosion of mass-accreting WDs in symbiotic systems and "helium star cataclysmics" are found to be different from those arising in another class of candidate systems: cataclysmic-like (contact) systems (CLS), where a CO WD accretes hydrogen on a thermal time scale from a Roche-lobe filling main-sequence or subgiant companion. We derive the evolution of the SNe Ia rate and properties resulting from the thermonuclear explosion of sub-Chandrasekhar mass WDs in such systems when they detonate a helium layer accumulated from steady burning of hydrogen at the surface. A fraction of CLS are believed to form a subset of the observed luminous supersoft X-ray sources (SSS). Sub-Chandrasekhar explosions from CLS are disfavored in all types of galaxies at redshifts z > 1. On the other hand, CLS where the WD succeeds to grow to the Chandrasekhar mass are more likely found in spiral galaxies, and absent from early-type galaxies. SNe Ia statistics could (if the uncertainties still involved are reduced) help to discriminate among proposed SNe Ia scenarios. The range of variation of the characteristics of SNe Ia in the CLS scenario should be narrower than in symbiotics. The predicted correlation between peak luminosity and expansion velociy of the ejecta in SNe Ia coming from these systems is weak. For CLS, the distinction between the characteristics of SNe Ia respectively arising from sub-Chandrasekhar and from Chandrasekhar-mass explosions should be sharp, since all sub-Chandrasekhar
description: uuencoded gz-compressed .tar PostScript file containing 16 pages and 2 figures, to appear in ApJ (Letters), Jan. 10, 1996
Formulation and in-vitro Evaluation of Theophylline Floating Tablets
Creators: name: E. I. Akpabio
name: D. E. Effiong
name: T. O. Uwah
name: G. Jacob
Publisher: name: Zenodo
Year: 2021
Subjects: Theophylline
buoyancy
swelling index
floating time
controlled release
polymer concentration

description: As technology continues to gain strong footing in the medical sciences, the application of its principles to overcome drug formulation challenges and the presentation of selected potently useful drugs have been encouraged. In the study presented in this chapter, our team undertook to formulate a floating drug delivery system of theophylline hydrochloride using a synthetic polymer and then investigate the effect of polymer concentration on tablet buoyancy and drug release properties. Hydroxypropyl methylcellulose (HPMC) is the polymer used at different concentration of 15% (F1), 20% (F2) and 30% (F3) for three formulation batches of floating tablets. The method employed was wet granulation and sodium bicarbonate along with citric acid as the gas generating agent. The physical properties of the granules and the floating tablets were evaluated. Also, the physicomechanical properties, buoyancy and swelling characteristic of the tablet were determined. The drug release study was done as outlined in the USP I (basket method) for 8h in 900 ml 0.1N HCl at 50 rpm. Samples were withdrawn at a predetermined time and analysed using a UV spectrophotometer at of 271 nm wavelength. All obtained data were statistically analyzed by one-way analysis of variance (ANOVA). The differences between means were considered significant at P<0.05. The result showed that polymer (HPMC) concentration significantly (p<0.05) increased swelling index and improved floating lag time, it had no significant effect on the total floating time. Percentage drug release at the end of 8 h was 100%, 98.2% and 96.13% for formulation F1, F2 and F3, respectively. All three formulations followed the Higuchi kinetics model of drug release while the mechanism of drug release was the non Fickian diffusion with exponents of 0.46, 0.51 and 0.56 for the respective batch. Batch F3 showed a better drug control and floating properties than batches F1 and F2. Polymer concentration influenced the onset of floating and controlled the release of theophylline.
Machine-learning-enhanced charge transport studies of organometallic molecules
Creators: name: Lemmer, Mario
Publisher: name: Imperial College London
Year: 2017

description: Molecular electronics is an intriguing area of research and it has received a considerable amount of attention in the recent years. This attention is partially fuelled by possible application of single molecules as microelectronic devices and by fundamental research about charge transport processes. In many areas of molecular electronics, large data sets are recorded to account for the large fluctuations on the nanoscale. Over the course of this research project, a new, machine-learning-based approach to data analysis was developed, namely MPVC. It is demonstrated herein, how this fundamentally new approach to data analysis can provide greater insight into complex single molecule conductance data. At the same time, this approach does not make assumptions about the data. The new analysis approach was then applied to single molecule conductance data of organometallic molecules. These types of molecules have received considerable attention lately because of their potential applications as molecular wires or single molecular switches. It is demonstrated how MPVC analysis can provide additional insights into these data. Finally, results on single molecular conductance data for four ring-shaped, organometallic compounds will be presented. This is the first time that single molecule conductance data has been reported on for ring-shaped compounds. Ring-shaped molecules are of particular interest for the molecular electronics community because of their potential application as single molecular switches. Their spatially separated current pathways could provide a testbed for charge transport studies with a special focus on quantum interference. Overall, the work presented within this thesis demonstrates the use of machine learning techniques in molecular electronics and provides novel insights into the charge transport on the nanoscale with a special focus on organometallics and is thus a significant contribution to the field.
Chiral symmetry restoration by parity doubling and the structure of neutron stars
Creators: name: Marczenko, Michał
name: Blaschke, David
name: Redlich, Krzysztof
name: Sasaki, Chihiro
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the equation of state for a recently developed hybrid quark-meson-nucleon model under neutron star conditions of $β-$equilibrium and charge neutrality. The model has the characteristic feature that at increasing baryon density chiral symmetry is restored in a first order transition within the hadronic phase by lifting the mass splitting between chiral partner states, before quark deconfinement takes place. Most important for this study are the nucleon (neutron, proton) and $N(1535)$ states. We present three sets for the two free parameters which result in compact star mass-radius relations in accordance with modern constraints on the mass from PSR~J0437-4715 and on the compactness from GW170817. We also consider the threshold for the direct URCA process for which a new relationship is given and suggest as an additional constraint on the parameter choice of the model that this process shall become operative at best for stars with masses above the range for binary radio pulsars, $M>1.4~M_\odot$.
description: version accepted for publication in Phys. Rev. D
Trochilus surinamensis Linnaeus, 1758, spec. nov.
Creators: name: Linnaeus, Carolus
Publisher: name: Laurentius Salvius
Year: 1758
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Apodiformes
Trochilidae
Trochilus
Trochilus surinamensis

description: Trochilus surinamensis [spec. nov.]
T. rectricibus ferrugineis, remigibus nigris, corpore aureo subtus albicante.
Habitat in America.
description: Published as part of Linnaeus, Carolus, 1758, Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Stockholm :Laurentius Salvius on page 121, DOI: 10.5962/bhl.title.542, http://zenodo.org/record/3922206
The Fundamental Plane for cluster E and S0 galaxies
Creators: name: Jorgensen, Inger
name: Franx, Marijn
name: Kjaergaard, Per
Publisher: name: arXiv
Year: 1995
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analyzed the Fundamental Plane (FP) for a sample of 226 E and S0 galaxies in ten clusters of galaxies. For photometry in Gunn r the best fitting plane is log r_e=1.24 log sigma - 0.82 log _e + cst. The scatter is 0.084 in log r_e. The slope of the FP is not significantly different from cluster to cluster. The residuals of the FP correlate weakly with the velocity dispersion and the surface brightness. Thus, to avoid biases of derived distances the galaxies need to be selected in a homogeneous way. The FP has significant intrinsic scatter. No other structural parameters like ellipticity or isophotal shape can reduce the scatter significantly. The Mg_2-sigma relation differs slightly from cluster to cluster. Galaxies in clusters with lower velocity dispersions have systematically lower Mg_2. With the current stellar population models, it is in best agreement with our results regarding the FP if the offsets are mainly caused by differences in metallicity. Most of the distances that we derive from the FP imply small peculiar motions, <1000km/s. The zero point of the FP must therefore be quite stable. The residuals from the Mg_2-sigma relation may be used to flag galaxies with deviant populations, and possibly to correct the distance determinations for the deviations.
description: 20 pages, gzipped PostScript, 14 figures included. Accepted for publication in MNRAS
Femtosecond pulse amplification on a chip
Creators: name: Gaafar, Mahmoud A.
name: Ludwig, Markus
name: Wang, Kai
name: Wildi, Thibault
name: Voumard, Thibault
name: Sinobad, Milan
name: Lorenzen, Jan
name: Francis, Henry
name: Zhang, Shuangyou
name: Bi, Toby
name: DeľHaye, Pascal
name: Geiselmann, Michael
name: Singh, Neetesh
name: Kärtner, Franz X.
name: Garcia-Blanco, Sonia M.
name: Herr, Tobias
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Femtosecond laser pulses enable the synthesis of light across the electromagnetic spectrum and provide access to ultrafast phenomena in physics, biology, and chemistry. Chip-integration of femtosecond technology could revolutionize applications such as point-of-care diagnostics, bio-medical imaging, portable chemical sensing, or autonomous navigation. However, current chip-integrated pulse sources lack the required peak power and on-chip amplification of femtosecond pulses has been an unresolved challenge. Here, addressing this challenge, we report >50-fold amplification of 1 GHz-repetition-rate chirped femtosecond pulses in a CMOS-compatible photonic chip to 800 W peak power with 116 fs pulse duration. This power level is 2-3 orders of magnitude higher compared to those in previously demonstrated on-chip pulse sources and can provide the power needed to address key applications. To achieve this, detrimental nonlinear effects are mitigated through all-normal dispersion, large mode-area and rare-earth-doped gain waveguides. These results offer a pathway to chip-integrated femtosecond technology with peak power-levels characteristic of table-top sources.
description: 15 pages, 7 figures
Studies on DNA Molecules in Identification of Unclaimed or Missing Dead Bodies Presumed Death in Western Kenya Utilizing Physical Comparison Standards
Creators: name: Silali, Maurice B.
name: W. Odero
name: E. Rogena
Publisher: name: Zenodo
Year: 2021
Subjects: Medico-legal
demographic indices
dactylograpgy
eletrophoresis
comparisons
forensic pathology
accessible
affordable

description: Medico-legal form bench-mark of health determinants and provide integrated services towards criminal justice support in health. Investigations of medico-legal approaches are multifaceted and require expertise of multidisciplinary teams of skilled practitioners from various fields. Globally, over 44 million cases of unclaimed bodies or missing dead persons (UCBOMDPs) occur annually, 88% of these cases are in Sub Saharan Africa. In Kenya and western Kenya, rate of UCBOMDPs from road traffic accidents accounts 30% and 10% respectively, 80% of these UCBOMDPs are associated with limited access to affordable quality comparison tests for identifications, attributed to the increased prevalence of health and occupational hazards in population health. The current investigations aimed at identifying UCBOMDPs from public mortuaries, by quantifying demographic data and determining DNA finger print and chemical tests (electrophoresis) using comparison standards. In Exploratory and cross sectional, 235 respondents were investigated through purposive and saturated sampling using Finger print forms, structured questionnaires, focus group discussions (FGDs), observations and key informant interviews (KII) guides to collect data. Analyzed statistical inferences and contents analysis to saturation, results showed, 94% of mortuary service providers in tier 4 were primary and secondary education drop outs of males, on contract jobs with limited access to quality services in mortuary science, contrarily to females and males counterparts from tiers 5 and 6 mortuary facilities on permanent and trained. Rate of gross infection in public mortuaries and congestion had significant, OD, (2.2, 0.44). Prevalence of male being admitted as UCBOMDPs was significant due to being family bread winners, OD (8.3, 0.12), RR (0.33), 95% CI (1.23, 1.02), significance were associated with male deliberately leaving IDs in houses due to identity. Utilization of Dactylography was significant, than electrophoresis method, P value (0.67), OD (4.8, 1.3) due to high costs, procedures, DNA quantifying reagents and next of kin sampling for comparisons. Need for quality service advocacy in Department of Forensic Pathology to develop subsidized functional DNA chemical structures