cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Control of the transmission phase in an asymmetric four-terminal Aharonov-Bohm interferometer
Creators: name: Buchholz, Sven S.
name: Fischer, Saskia F.
name: Kunze, Ulrich
name: Bell, Matthew
name: Reuter, Dirk
name: Wieck, Andreas D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Phase sensitivity and thermal dephasing in coherent electron transport in quasi one-dimensional (1D) waveguide rings of an asymmetric four-terminal geometry are studied by magnetotransport measurements. We demonstrate the electrostatic control of the phase in Aharonov-Bohm (AB) resistance oscillations and investigate the impact of the measurement circuitry on decoherence. Phase rigidity is broken due to the ring geometry: Orthogonal waveguide cross-junctions and 1D leads minimize reflections and resonances between leads allowing for a continuous electron transmission phase shift. The measurement circuitry influences dephasing: Thermal averaging dominates in the non-local measurement configuration while additional influence of potential fluctuations becomes relevant in the local configuration.
description: 7 pages, 4 figures
Development of geometric-adaptive parameters for support-free 3D printing (LPBF) of Inconel 718
Creators: name: Sit, Chun Kit
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 401401
subject: Additive manufacturing
classificationCode: 400101
subject: Aerospace materials

description: 3D metal printing has transformed the manufacturing of complex components for high performance in extreme environment such as space and aerospace. However, the current constraint of 45° overhang angle limits the potential of metal 3D printing. This dissertation presents an unconventional and novel framework to circumvent these current limitations in LPBF. In particular, this thesis presents the world-first process map for 1st layer overhang, followed by the novel breakthrough of defect-free horizontal overhangs without support. Novel understanding of the melt pool dynamics in both spatially and temporally resolved manner enables the printing of complex components such as Ni-based superalloy turbine blade without support.
Strengthening conservation through localized definitions of wellbeing : understanding what is meant by 'A Good Life' in Namibia's Zambezi Region
Creators: name: O'Connor, Alida
Publisher: name: University of British Columbia
Year: 2018

description: Effective conservation is more important now than ever before with biodiversity loss occurring at unprecedented rates. Conservation practices have evolved from ‘fence and fine’ strategies to participatory approaches. It is now widely accepted that conservation initiatives should deliver both socioeconomic benefits and biodiversity protection.  One of the best known examples of achieving this is Namibia’s communal conservancy programme. This thesis sought to understand how communities in Namibia’s Zambezi Region define wellbeing in general and as a function of the conservancies. This work aimed to move beyond universal measures of socioeconomic wellbeing to a set that includes a broad suite of concerns that are economic and social, environmental, cultural and political. Findings are based on two months of fieldwork in Namibia where data was collected through interviews and focus groups across six conservancies in the Zambezi Region. Through interviews and focus groups ten wellbeing dimensions emerged. These ten dimensions shed light on two important findings: First, the dimensions are inclusive of many well-explored wellbeing components, which challenges the notion that global indices do not adequately capture the dimensions of wellbeing. However, and secondly, it is how these categories are elaborated that make them useful at the local scale. Therefore, it is not the way wellbeing is categorized that is most important, it is how these dimensions are interpreted and incorporated in the process of conservation planning. These insights are significant because conservation initiatives that are better tailored to local needs can foster more meaningful community involvement, which Namibia’s programme has proved to be integral to conservation success.
Huge progeny production during the transient of a quasi-species model of viral infection, reproduction and mutation
Creators: name: Cuesta, Jose A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: 92D15, 92D25, 92D30, 05A15

description: Eigen's quasi-species model describes viruses as ensembles of different mutants of a high fitness "master" genotype. Mutants are assumed to have lower fitness than the master type, yet they coexist with it forming the quasi-species. When the mutation rate is sufficiently high, the master type no longer survives and gets replaced by a wide range of mutant types, thus destroying the quasi-species. It is the so-called "error catastrophe". But natural selection acts on phenotypes, not genotypes, and huge amounts of genotypes yield the same phenotype. An important consequence of this is the appearance of beneficial mutations which increase the fitness of mutants. A model has been recently proposed to describe quasi-species in the presence of beneficial mutations. This model lacks the error catastrophe of Eigen's model and predicts a steady state in which the viral population grows exponentially. Extinction can only occur if the infectivity of the quasi-species is so low that this exponential is negative. In this work I investigate the transient of this model when infection is started from a small amount of low fitness virions. I prove that, beyond an initial regime where viral population decreases (and can go extinct), the growth of the population is super-exponential. Hence this population quickly becomes so huge that selection due to lack of host cells to be infected begins to act before the steady state is reached. This result suggests that viral infection may widespread before the virus has developed its optimal form.
description: 9 pages, no figures, uses Elsevier elsarticle class
Nondeterministic State Complexity for Suffix-Free Regular Languages
Creators: name: Han, Yo-Sub
name: Salomaa, Kai
Publisher: name: arXiv
Year: 2010
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We investigate the nondeterministic state complexity of basic operations for suffix-free regular languages. The nondeterministic state complexity of an operation is the number of states that are necessary and sufficient in the worst-case for a minimal nondeterministic finite-state automaton that accepts the language obtained from the operation. We consider basic operations (catenation, union, intersection, Kleene star, reversal and complementation) and establish matching upper and lower bounds for each operation. In the case of complementation the upper and lower bounds differ by an additive constant of two.
description: In Proceedings DCFS 2010, arXiv:1008.1270
Haus/Gross-Pitaevskii equation for random lasers
Creators: name: Leonetti, Marco
name: Conti, Claudio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We report on experimental tests of the trend of random laserlinewidth versus pumping power as predicted by an Haus master equation that is formally identical to the one-dimensional Gross- Pitaevskii equation in an harmonic potential. Experiments are done by employing picosecond pumped dispersions of Titaniumdioxide particles in dye-doped methanol. The derivation of the master equations is also detailed and shown to be in agreement with experiments analytically predicting the value of the threshold linewidth.
Electric signalling and reproductive behaviour in a mormyrid fish, the bulldog Marcusenius macrolepidotus (South African form)
Creators: name: Werneyer, Martin
name: Kramer, Bernd
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: Reproduction; Spawning; Mormyrids; Electrocommunication; Agonistic
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Bulldog fish (Marcusenius macrolepidotus) generate short (<1 ms) electric-organ discharges (EODs), separated by much longer and highly variable interdischarge intervals (IDIs). We observed overt behaviour and electrical activity during reproductive behaviour in a male and in a female bulldog, and identified IDI patterns with putative signal functions. In contrast to Pollimyrus adspersus and Pollimyrus isidori, in which an elaborate and extended courtship precedes spawning proper, our fish started spawning almost immediately when we allowed the female to enter the male’s territory. The male did not construct a nest, and neither parent provided parental care. The male showed very little aggression towards the intruding female. Fish spawned in bouts near the male’s hiding place, and eggs were scattered by the female’s vigorous tail flips as she left the spawning site, only to return shortly thereafter. During spawning bouts, both fish generated highly stereotyped IDI patterns: the male generated a series of IDIs gradually decreasing from about 200 ms to about 55 ms that was abruptly terminated by a long IDI. The female generated a series of relatively regular IDIs (about 54 ms) that was followed by a marked increase in IDI duration (the probable time of spawning). Finally, a sharp decrease in IDIs to about 20 ms accompanied the female’s sudden escape from the spawning site. In between spawning bouts, both fish generated series of very short IDIs (high discharge rate, HD) that alternated abruptly with very low-rate inter-HD activity (especially in the male). IDIs as short as 9 ms (male) or 11 ms (female) occurred during HD displays. No visible aggression, in fact very little overt behaviour, occurred during these HD displays in both fish. Agonistic interactions between male and female, outside a reproductive context, were similar to those previously described in male pairs, including overt behavioural patterns such as parallel swimming, antiparallel display and attack, as well as HD displays. When not interacting, fish did not generate HD displays. We suggest the HD display is a communication signal in both reproductive and agonistic contexts.
Electric Signals in the Social Behavior of Sympatric Elephantfish (Mormyridae, Teleostei) from the Upper Zambezi River
Creators: name: Scheffel, Andreas
name: Kramer, Bernd
Publisher: name: Universität Regensburg
Year: 2000
Subjects: subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Electrocommunication in mormyrid fish from African freshwaters is a challenging research field in neuroethology (Turner et al. 1999). However, virtually nothing is known about electrocommunication within natural mormyrid populations involving sympatric, syntopic species. Here we report on the nocturnal activities and electrocommunication among three syntopic species in a spacious laboratory setting resembling the natural one. Petrocephalus catostoma, Cyphomyrus discorhynchus, and Hippopotamyrus sp. nov. differ characteristically in their behavior, such as in territorial defense, schooling, and joining members of other species during foraging. Comparing social encounters within and between species, the first evidence for interspecific electrocommunication among syntopic species was found.
Implementation of Design Controls: Regulatory Strategy for Compliance with Health Canada and FDA Requirements for Medical Devices
Creators: name: Chaudhary, Nirmal Maheshkumar
name: Prajapati, Jaiminkumar Maheshkumar
name: Shah, Neha Kaushikbhai
name: Patel, Anjali Nileshkumar
name: Pithadiya, Shubham Pravinkumar
name: Gadhiya, Aneri Pramodbhai
name: Pirouzi, Peivand
Publisher: name: Crown College of Canada
Year: 2025

description: Companies employing electronic Quality Management Systems (eQMS) and repeated validation steps experience reduced recall rates, although smaller entities struggle with limited resources. A comparative evaluation indicates Health Canada’s balanced pre and post market approach contrasts with the FDA’s stringent premarket focus. These insights provide practical approaches for global regulatory alignment, enhancing patient safety, lowering noncompliance risks, and reinforcing design controls as a cornerstone of both compliance and innovation.
The effect of quench rate and initial grain structure on the mechanical behaviour of an Al-Mg-Si-Mn aluminum alloy
Creators: name: Sarmady, Neda
Publisher: name: University of British Columbia
Year: 2018

description: The mechanical behaviour of AA6082 is a function of the extrusion conditions and in particular, the quench rate after extrusion. Controlling the quench rate after extrusion can affect the microstructure evolution to produce desirable mechanical properties for application in structural components for the automotive industry, and is therefore a key parameter of interest. In this study, a near industry alloy similar to automotive grade AA6082 containing 0.5 wt.% Mn and 0.15 wt.% Cr was direct chill (DC) cast, homogenized for 2 hours at 550 °C, and extruded at a temperature of 500 °C with a ram speed of 8 mm/s to form 3 mm x 42 mm strips. The microstructure in the as-extruded strip was unrecrystallized due to the Smith-Zener drag from the Mn/Cr dispersoids. Furthermore, when the as-extruded strip was cold rolled prior to heating, recrystallization occurred concurrently with the solution treatment. This allowed for 3 initial microstructures to be produced, i.e. unrecrystallized, and recrystallized with a grain size of 9 and 40 µm. The aim of the study was to measure the quench sensitivity for the 3 different initial grain structures after solution treatment at 560 °C for a sufficient time to dissolve the Mg-Si precipitates, followed by cooling at rates between 4 and 2000 °C/s. Controlled cooling experiments within this temperature range were conducted using the Gleeble 3500 thermomechanical simulator. The relationship between quench rate and precipitation of Mg-Si phases on heterogeneous nucleation sites were analyzed qualitatively by FEGSEM, as well as their effect on mechanical properties such as yield stress, ultimate tensile stress and fracture properties which were characterized by tensile tests. It was found that the yield stress decreased as the quench rate decreased, and that the unrecrystallized material had a much larger quench sensitivity with respect to the recrystallized initial microstructures, speculated to arise from its high density of heterogeneous nucleation sites.
The Complemented System Approach: A Novel Method for Calculating the X-ray Scattering from Computer Simulations
Creators: name: Lajovic, Andrej
name: Tomšič, Matija
name: Jamnik, Andrej
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In this paper, we review the main problem concerning the calculation of X-ray scattering of simulated model systems, namely their finite size. A novel method based on the Rayleigh-Debye-Gans approximation was derived, which allows sidestepping this issue by complementing the missing surroundings of each particle with an average image of the system. The method was designed to operate directly on particle configurations without an intermediate step (e.g., calculation of pair distribution functions): in this way, all information contained in the configurations was preserved. A comparison of the results against those of other known methods showed that the new method combined several favourable properties: an arbitrary q-scale, scattering curves free of truncation artifacts and good behaviour down to the theoretical lower limit of the q-scale. A test of computational efficiency was also performed to establish a relative scale between the speeds of all known methods: the reciprocal lattice approach, the brute force method, the Fourier transform approach and the newly presented complemented system approach.
description: 6 pages, 5 figures. Copyright 2010 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at http://link.aip.org/link/?jcp/133/174123
Authrule: A Generic Rule-Based Authorization Module
Creators: name: Busch, Sönke
name: Muschall, Björn
name: Pernul, Günther
name: Priebe, Torsten
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: 330 Wirtschaft

description: As part of the access control process an authorization decision needs to be taken based on a certain authorization model. Depending on the environment different models are applicable (e.g., RBAC in organizations, MAC in the military field). An authorization model contains all necessary elements needed for the decision (e.g., subjects, objects, and roles) as well as their relations. As these elements are usually inherent in the software architecture of an access control module, such modules limit themselves to the use of a certain specific authorization model. A later change of the model consequently results in a substantial effort for revising the software architecture of the given module. Rule-based systems are well suited to represent authorization models by mapping them to facts and rules, which can be modified in a flexible manner. In this paper we present a generic authorization module, which can take authorization decisions on the basis of arbitrary models utilizing rule-based technology. The implementation of the popular RBAC and ABAC (attribute-based access control) models is demonstrated.
A Multi-omics Integration Approach to Identify Molecular Contributors of Absence Epilepsy and Post-Traumatic Epilepsy
Creators: name: Chong, Debbie Syuen Ee
Publisher: name: Monash University
Year: 2025
Subjects: classificationCode: 310902
subject: Animal cell and molecular biology
classificationCode: 320999
subject: Neurosciences not elsewhere classified
classificationCode: 310208
subject: Translational and applied bioinformatics

description: Epilepsy is a neurological condition characterised by a recurring predisposition to seizures. It affects around 50 million individuals globally. Currently, there is a lack of in-depth understanding on the molecular mechanisms involved in its development. This thesis attempts to unravel the pathophysiology underlying two different forms of epilepsy by integrating information from multiple biological layers such as the transcriptome and proteome. Several pathways of interest, including glutamate metabolism, were identified. These results may be further developed for clinical diagnosis purposes or novel therapeautic targets.
Complexity in Prefix-Free Regular Languages
Creators: name: Jirásková, Galina
name: Krausová, Monika
Publisher: name: arXiv
Year: 2010
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We examine deterministic and nondeterministic state complexities of regular operations on prefix-free languages. We strengthen several results by providing witness languages over smaller alphabets, usually as small as possible. We next provide the tight bounds on state complexity of symmetric difference, and deterministic and nondeterministic state complexity of difference and cyclic shift of prefix-free languages.
description: In Proceedings DCFS 2010, arXiv:1008.1270
Additional file 1 of To what extent AstraZeneca ChAdOx1 nCoV-19 vaccine is safe and effective? Rapid systematic review
Creators: name: Mohamed Hussein, Aliae A. R.
name: Ibrahim, Islam H.
name: Mahmoud, Islam A.
name: Amary, Marwa
name: Sayad, Reem
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: Additional file 1: Supplementary 1. Modified search strategy in different databases https://docs.google.com/document/d/17NEtXgr_giWpiyVnHGdyqqs5UNZS5zGytXAQhhlgF7w/edit?usp=sharing Supplementary 2. Folder containing forest plots of adverse events analysis https://drive.google.com/drive/folders/17mv5gFSiRbiH6gZN16qeN_8Iix8RqmlS?usp=sharing Supplementary 3. Folder containing forest plots of thrombotic adverse events analysis https://drive.google.com/drive/folders/1mFN6bv2Y0atfHl0OeZKU4EmhLWFkY1Nq?usp=sharing .
CP Violation in Hierarchical Yukawa Models
Creators: name: Peccei, R. D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Because 4-dimensional CP is a good symmetry of many higher-dimensional theories, this suggests the possible existence of a universal CP-violating phase originating from the process of compactification. Such a phase, if it existed, would not be easy to uncover since the phases in Yukawa matrices are not simply related to the observed CKM phase $δ$. Hierarchical Yukawa models of the type arising in F-theory GUT models provide an interesting exception. Recently, Heckman and Vafa studied a particular F-theory GUT model with hierarchical Yukawa matrices with complex phases of O(1) and showed, by examining the Jarlskog invariant, that this model leads to $\sin δ\sim O(1)$. A more detailed examination of the model, although confirming their result, is seen to be also compatible with having a phase $δ_o= π/3$ imprinted on the Hermitian Yukawa matrices, leading to $\sin δ\simeq \sin δ_o$.
description: 20 pages
MEDDOPROF Supplementary Materials
Creators: name: Lima-López, Salvador
name: Eulàlia Farré-Maduell
name: Miranda-Escalada, Antonio
name: Briva-Iglesias, Vicent
name: Krallinger, Martin
Publisher: name: Zenodo
Year: 2021

description: This document is a companion to the article "NLP applied to occupational health: MEDDOPROF shared task at IberLEF 2021 on automatic recognition, classification and normalization of professions and occupations from medical texts" which includes more information on the Gold Standard corpus' content and the results of all submitted runs. Please cite if you use this resource: Salvador Lima-López, Eulàlia Farré-Maduell, Antonio Miranda-Escalada, Vicent Brivá-Iglesias and Martin Krallinger. NLP applied to occupational health: MEDDOPROF shared task at IberLEF 2021 on automatic recognition, classification and normalization of professions and occupations from medical texts. In Procesamiento del Lenguaje Natural, 67. 2021. @article{meddoprof, title={NLP applied to occupational health: MEDDOPROF shared task at IberLEF 2021 on automatic recognition, classification and normalization of professions and occupations from medical texts}, author={Lima-López, Salvador and Farré-Maduell, Eulàlia and Miranda-Escalada, Antonio and Brivá-Iglesias, Vicent and Krallinger, Martin}, journal = {Procesamiento del Lenguaje Natural}, volume = {67}, year={2021} }
Learning Residual Finite-State Automata Using Observation Tables
Creators: name: Kasprzik, Anna
Publisher: name: arXiv
Year: 2010
Subjects: subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We define a two-step learner for RFSAs based on an observation table by using an algorithm for minimal DFAs to build a table for the reversal of the language in question and showing that we can derive the minimal RFSA from it after some simple modifications. We compare the algorithm to two other table-based ones of which one (by Bollig et al. 2009) infers a RFSA directly, and the other is another two-step learner proposed by the author. We focus on the criterion of query complexity.
description: In Proceedings DCFS 2010, arXiv:1008.1270
Additional file 1 of Sustainment stories: a qualitative analysis of barriers to sustainment of the National Rural Transitions of Care Nurse Program
Creators: name: Nunnery, Mary Ava
name: Gilmartin, Heather
name: McCarthy, Michaela
name: Motta, Lexus Ujano-De
name: Wills, Ashlea
name: Kelley, Lynette
name: Jones, Christine D.
name: Leonard, Chelsea
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1: Appendix 1. Exit Interview Guide for Transitions Nurse for TNP. Appendix 2. Exit Interview Guide for Site Champion TNP
Anomalous Tail Effect on Resistivity Transition and Weak-link Behavior of Iron Based Superconductor
Creators: name: Sun, Y.
name: Ding, Y.
name: Zhuang, J. C.
name: Cui, L. J.
name: Yuan, X. P.
name: Shi, Z. X.
name: Ren, Z. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Temperature dependent resistivity of the iron-based superconductor NdFeAsO0.88F0.12 was measured under different applied fields and excitation currents. Arrhenius plot shows an anomalous tail effect, which contains obvious two resistivity dropping stages. The first is caused by the normal superconducting transition, and the second is supposed to be related to the weak-link between the grains. A model for the resistivity dropping related to the weak-link behavior is proposed, which is based on the Josephson junctions formed by the impurities in grain boundaries like FeAs, Sm2O3 and cracks together with the adjacent grains. These Josephson junctions can be easily broken by the applied fields and the excitations currents, leading to the anomalous resistivity tail in many polycrystalline iron-based superconductors. The calculated resistivity dropping agrees well with the experimental data, which manifests the correctness of the explanation of the obtained anomalous tail effect.
description: 9 pages, 4 figures
Benzoanellated [2.2]Paracylophanes: Synthesis and Electronic Properties
Creators: name: Reiser, Oliver
name: König, Burkhard
name: Meerholz, Klaus
name: Heinze, Juergen
name: Wellauer, Thomas
name: Gerson, Fabian
name: Frim, Ron
name: Rabinovitz, Mordecai
name: Meijere, Armin de
Publisher: name: Universität Regensburg
Year: 1993
Subjects: subject: 540 Chemie

description: Mono- and dibenzoannelated [2.2]paracyclophanes 12 and 1 were synthesized by palladium-catalyzed twoand four-fold alkenylation of vicinal di- and tetrabromides 5 and 6, respectively, and subsequent electrocyclization/ dehydrogenation of the resulting (E,Z,E)-trienes. Further extensions of the annelated ring systems, leading to the tetrahydronaphthalene derivative 15, the bis-terphenylene derivative 16, and the benzobis[2.2]paracyclophane 18, were achieved through derivatization of suitable substituents introduced with the alkene coupling component. Mono- and polyanions of some derivatives were generated and studied by ESR, ENDOR, and NMR spectroscopy, as well as by cyclic voltammetry. The assembly of mutually orthogonal r-systems in arene annelated [2.2]paracyclophanes allows the reversible incorporation of up to six additional electrons per molecule, which is the upper limit for hydrocarbons reported to date.
A Synthetic Equivalent for [2.2]Paracyclophane-1,9-diyne: Octaphenyl-1:2,9:10-dibenzo[2,2]paracyclophane-l,9-diene and Its Reduction to the Hexaanion
Creators: name: Meijere, Armin de
name: Heinze, Jürgen
name: Meerholz, Klaus
name: Reiser, Oliver
name: König, Burkhard
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 540 Chemie

description: Auch erschienen als: A. de Meijere, J. Heinze, K. Meerholz, O. Reiser, B. König (1990) Ein Syntheseäquivalent für [2.2]Paracylophan-1,9-diin. Darstellung von Octaphenyl-1:2,9:10-dibenzo[2.2]paracylophan-1,9-dien.. Angewandte Chemie, 102 (12). pp. 1443-1444.
Proposal for a ferromagnetic multiwell spin oscillator
Creators: name: Ertler, Christian
name: Pötz, Walter
name: Fabian, Jaroslav
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The highly nonlinear coupling of transport and magnetic properties in a multiwell heterostructure, which comprises ferromagnetic quantum wells made of diluted magnetic semiconductors, is theoretically investigated. The interplay of resonant tunneling and carrier-mediated ferromagnetism in the magnetic wells induces very robust, self-sustained current and magnetization oscillations. Over a large window of steady bias voltages the spin polarization of the collector current is oscillating between positive and negative values, realizing a spin oscillator device.
description: 3 pages, 4 figures
L-systems in Geometric Modeling
Creators: name: Prusinkiewicz, Przemyslaw
name: Shirmohammadi, Mitra
name: Samavati, Faramarz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Graphics (cs.GR)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We show that parametric context-sensitive L-systems with affine geometry interpretation provide a succinct description of some of the most fundamental algorithms of geometric modeling of curves. Examples include the Lane-Riesenfeld algorithm for generating B-splines, the de Casteljau algorithm for generating Bezier curves, and their extensions to rational curves. Our results generalize the previously reported geometric-modeling applications of L-systems, which were limited to subdivision curves.
description: In Proceedings DCFS 2010, arXiv:1008.1270
Three Paramagnetic Reduction Stages of Phenyl Substituted 1,2:9,10 Dibenzo[2.2]paracyclophane-1,9-dienes. Radical Anions, Triplet Dianions and Radical Trianions as studied by ESR and ENDOR Spektroscopy
Creators: name: Meijere, Armin de
name: Gerson, Fabian
name: König, Burkhard
name: Reiser, Oliver
name: Wellauer, Thomas
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: 540 Chemie

description: Reduction of di- and tetraphenyl-substituted 1,2:9,10-dibenzo[2.2]paracyclophane-1,9-dienes, 3, 3-d'₂, 4,5, and 5-tBu₄ with potassium in ethereal solvents has been monitored by ESR and ENDOR spectroscopy. In each case, the first reduction step yields a radical anion in which the unpaired electron resides in one of the two lateral biphenyl or o-terphenyl mystems orthogonal to the central phane unit. Except under conditions of strong association with the K⁺ counterion, electron exchange between the two π-ystems is fast on the hyperfine time scale. Upon further reduction, a second electron is taken up, as revealed by the appearance of triplet dianions bearing one unpaired electron in each of the two lateral π-ystems (separation ca. 1 nm). The singlet state of the dianion of 5 has been estimated to lie only slightly higher (ca. 2 kJ mol⁻¹) than the triplet state; the simultaneous presence of the singlet dianions of 3 and 5 in the solutions is compatible with evidence from NMR spectroscopy. An even more prolonged contact with potassium metal leads to radical trianions with the unpaired electron accommodated in the central phane unit. These radical trianions can thus be regarded as the radical anions of [2.2]paracyclophane having two negatively charged lateral π-ystems attached to it. Detection of trianions in a quartet state by ESR spectroscopy proved to be difficult under the experimental conditions used. The sequential uptake of three electrons by 3-5 is discussed in the light of the reduction potentials of the constituent π-ystems.
The MOSES Project: Automated and autonomous technologies for modal shift to Short Sea Shipping
Creators: name: Prof. Nikolaos Ventikos
name: Louzis, Konstantinos
Publisher: name: Zenodo
Year: 2023

description: Inland Navigation Week 2023 was a hybrid event that took place on 20-24 March 2023 in Brussels. Participants and attendees had the chance to better understand the role, contribution, and potential of Inland Waterway Transport (IWT) towards a greener, more resilient, and integrated European transport system. This event was designed for policymakers, regulators, industry experts and representatives, economic operators and anyone interested in the potential of IWT to become a key partner in Europe’s green, resilient, and integrated transport system. It comprised a series of insightful and thought-provoking events designed to showcase solutions that promote sustainable transport, reduce CO2 emissions, and enhance the competitiveness of IWT. MOSES, along with its sister projects AEGIS & AUTOSHIP, participated in the “Autonomous sailing” and “Resilience” clusters session, on the 21st of March. Prof Nikolaos Ventikos & Mr. Konstantinos Louzis, from NTUA, members of MOSES coordinating team, delivered a presentation entitled “The MOSES Project: Automated and autonomous technologies for modal shift to Short Sea Shipping“. Their presentation is available here.
Phase diagram of iron-arsenide superconductors Ca(Fe1-xCox)2As2 (0 <= x <= 0.2)
Creators: name: Harnagea, L.
name: Singh, S.
name: Friemel, G.
name: Leps, N.
name: Bombor, D.
name: Abdel-Hafiez, M.
name: Wolter, A. U. B
name: Hess, C.
name: Klingeler, R.
name: Behr, G.
name: Wurmehl, S.
name: Büchner, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Platelet-like single crystals of the Ca(Fe1-xCox)2As2 series having lateral dimensions up to 15 mm and thickness up to 0.5 mm were obtained from the high temperature solution growth technique using Sn flux. Upon Co doping, the c-axis of the tetragonal unit cell decreases, while the a-axis shows a less significant variation. Pristine CaFe2As2 shows a combined spin-density-wave and structural transition near T = 166 K which gradually shifts to lower temperatures and splits with increasing Co-doping. Both transitions terminate abruptly at a critical Co-concentration of xc = 0.075. For x \geq 0.05, superconductivity appears at low temperatures with a maximum transition temperature TC of around 20 K. The superconducting volume fraction increases with Co concentration up to x = 0.09 followed by a gradual decrease with further increase of the doping level. The electronic phase diagram of Ca(Fe1-xCox)2As2 (0 \leq x \leq 0.2) series is constructed from the magnetization and electric resistivity data. We show that the low-temperature superconducting properties of Co-doped CaFe2As2 differ considerably from those of BaFe2As2 reported previously. These differences seem to be related to the extreme pressure sensitivity of CaFe2As2 relative to its Ba counterpart.
description: 27 pages, 13 figures, article
The implications of seed rain and seed bank patterns for plant succession at the edges of abandoned fields in Mediterranean landscapes
Creators: name: Buisson, Elise
name: Dutoit, Thierry
name: Torre, Franck
name: Römermann, Christine
name: Poschlod, Peter
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: Ants; Dry grassland; Mosaic of herbaceous communities; Seed bank; Seed rain; Steppe
subject: 580 Pflanzen (Botanik)
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: Some environmental variables and above-ground vegetation, seed rain, ant-borne seeds and seed banks were studied on three abandoned fields, at the margins between these fields and a remnant patch of a native steppe vegetation of a high value for nature and species conservation. While the fields were the same size, were adjacent to the same patch of remnant steppe and were cultivated with the same crop, site-specific environmental variables contributed to 23% of the vegetation patterns; each site was characterised by its unique historical trajectory and thus, by a particular set of species. Distance from boundaries contributed to 10% of the vegetation patterns. Species characterising the surrounding steppe were found close to boundaries; species characterising abandoned fields were found further away. Winter seed banks and summer deep seed bank did not contribute much to either effect and were characterised by species dating back from past cultivation. Conversely, summer surface seed bank greatly contributed to (83%) the differences in species composition between the three fields. Seed rain contributed to differences in species composition between fields (91%) and distance (76%). Ant-borne seeds largely contributed to the differences between fields (87%). The colonisation of steppe species on field margins occurs mainly through seed rain and is very slow and incomplete. In a semi-arid fragmented open-landscape, patches of native vegetation do not play a great role in colonisation processes, and itinerant sheep grazing is insufficient to initiate recovery.
Container Closure Systems for Intravenous Medications: A Rigorous Evaluation of Best Manufacturing Practices and Patient Safety in Canada, the USA, and the EU.
Creators: name: Jaysinh Roy, Sophia
name: Pirouzi, Peivand
Publisher: name: Crown College of Canada
Year: 2025

description: As pharmaceutical technology evolves, CCS are continually refined, resulting in increasingly robust, efficient, and customized solutions that address the changing demands of drug development and manufacturing. Regulatory bodies like Health Canada, the U.S. Food and Drug Administration (FDA), and the European Medicines Agency (EMA) impose rigorous standards, though their approaches vary. Health Canada focuses on risk-based evaluations, the FDA emphasizes detailed stability and material testing, and the EMA prioritizes harmonized standards across Europe, collectively ensuring patient safety on a global scale.
Instruction within entertainment : explicit and implicit religious teachings in children's literature in the nineteenth century
Creators: name: Francis, Rebecca Jane
Publisher: name: University of British Columbia
Year: 2018

description: How and what to teach children through stories has been an ongoing topic of debate for centuries. In the nineteenth century, much of this debate was centred around teaching Christian religious practices, and connecting these practices back to moral lessons or social concerns. This thesis traces the changes in the way in which religious teachings are presented in children’s literature throughout the nineteenth century. I argue that the instructional elements of children’s literature do not become less significant over the period, but rather become implicit rather than explicit, and thus invite the implied child reader to make connections and judgements for him- or herself rather than merely accepting what the narrator is saying. I argue that norms surrounding gender, social class and empire are linked back to religious teachings, but that these links become less clear over the course of the century. I make this argument by looking first at domestic children’s fiction in the earlier part of the century by Hannah More, Mary Martha Sherwood, Charlotte Yonge and Hesba Stretton and show that earlier fiction was heavily didactic due to a lack of faith in the child reader’s ability to interpret the text, but that this fiction also went further than simplistic didacticism by creating a spiritually significant space for women in the home. I then examine fantasy novels by Charles Kingsley, Lewis Carroll and Anna Sewell, arguing that despite being seemingly subversive, fantasy novels do not attempt to question the social class system or the religious teachings that upheld it. The final chapter explores boys’ adventure and school fiction in the works of Thomas Hughes, R. M. Ballantyne, Robert Lewis Stevenson and Rudyard Kipling, and demonstrates that the narrow forms of masculinity supported by earlier texts are questioned by later writers. All of these novels either accept or question social expectations around gender, class and empire while associating these expectations with specifically religious teachings. Ultimately, the movement from explicit to implicit instruction in children’s literature does not signify a decreased interest in religious concerns, but only a change in the way in which religious teaching is presented.
การพัฒนาผลิตภัณฑ์สมุนไพรบนฐานองค์ความรู้ภูมิปัญญาและพืชอัตลักษณ์ท้องถิ่นของวิสาหกิจชุมชนสมุนไพรคุณธรรมวัดคูเต่า ตำบลแม่ทอม อำเภอบางกล่ำ จังหวัดสงขลา
Creators: name: พระมหาบุญเลิศ ช่วยธานี
Publisher: name: มหาวิทยาลัยมหาจุฬาลงกรณราชวิทยาลัย วิทยาเขตนครสวรรค์
Year: 2023
Subjects: เกษตรกรอาสาสมัคร
เศรษฐกิจแบบพึ่งตลาด
เศรษฐกิจแบบพึ่งตนเอง
ปรัชญาของเศรษฐกิจพอเพียง

description: The Journal of Research and Academics, 6, 3, ม.ค.-16
Pressure dependence of the low- temperature crystal structure and phase transition behaviour of CaFeAsF and SrFeAsF: A synchrotron x-ray diffraction study
Creators: name: Mishra, S. K.
name: Mittal, R.
name: Chaplot, S. L.
name: Ovsyannikov, S. V.
name: Trots, D. M.
name: Dubrovinsky, L.
name: Su, Y.
name: Brueckel, Th.
name: Matsuishi, S.
name: Hosono, H.
name: Garbarino, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report systematic investigation of high pressure crystal structures and structural phase transition upto 46 GPa in CaFeAsF and 40 GPa in SrFeAsF at 40 K using powder synchrotron x-ray diffraction experiments and Rietveld analysis of the diffraction data. We find that CaFeAsF undergoes orthorhombic to monoclinic phase transition at Pc = 13.7 GPa while increasing pressure. SrFeAsF exhibits coexistence of orthorhombic and monoclinic phases over a large pressure range from 9 to 39 GPa. The coexistence of the two phases indicates that the transition is of first order in nature. Unlike in the 122 compounds (BaFe2As2 & CaFe2As2) we do not find any collapse tetragonal transition. The transition to a lower symmetry phase (orthorhombic to monoclinic) in 1111 compounds under pressure is in contrast with the transition to a high symmetry phase (orthorhombic to tetragonal) in 122 type compounds. On heating from 40 K at high pressure, CaFeAsF undergoes monoclinic to tetragonal phase transition around 25 GPa and 200 K. Further, it does not show any post-tetragonal phase transition and remains in the tetragonal phase upto 25 GPa at 300 K. The dPc/dT is found to be positive for the CaFeAsF & CaFe2As2, however the same was not found in case of BaFe2As2. We discuss observations of structural evolution in the context of superconductivity in these and other Fe-based compounds. It appears that the closeness of the Fe-As-Fe bond angle to its ideal tetrahedral value of 109.470 might be associated with occurrence of superconductivity at low temperature.
description: 23 pages, 11 Figures
Allopatric differentiation in the Marcusenius macrolepidotus species complex in southern and eastern Africa: the resurrection of M. pongolensis and M. angolensis, and the description of two new species (Mormyridae, Teleostei)
Creators: name: Kramer, Bernd
name: Skelton, Paul
name: Van der Bank, Herman
name: Wink, Michael
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: Teleostei; Mormyridae; Marcusenius; systematics; morphometrics; electric organ discharges; molecular genetics; southern Africa
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: We critically compared local populations of the bulldog fish, Marcusenius macrolepidotus (Peters 1852), from different watersheds, from the furthest south (28° South, South Africa) to the Equator in Kenya. We ascertained allopatric differentiation from topotypical M. macrolepidotus from the Lower Zambezi River (Mozambique) in morphology, electric organ discharges, and molecular genetics for: (1) samples from the Okavango and Upper Zambezi Systems (Botswana and Namibia), (2) samples from South Africa's rivers draining into the Indian Ocean, and (3) samples from the East African Tana River (Kenya). Significant genetic distances in the mitochondrial cytochrome b gene and differing ISSR-PCR profiles corroborate differentiation between the four taxa. We resurrect M. pongolensis (Fowler, 1934) for South Africa (sample 2), and M. angolensis (Boulenger, 1905) for the Quanza River/Angola. We recognize M. altisambesi sp. n. for the Upper Zambezi/Okavango specimens (sample 1), and M. devosi sp. n. for those from Kenya (sample 3).
Ontogenetic development of electric-organ discharges in a mormyrid fish, the bulldog Marcusenius macrolepidotus (South African form)
Creators: name: Werneyer, Martin
name: Kramer, Bernd
Publisher: name: Universität Regensburg
Year: 2006
Subjects: subject: development; electric-organ discharge; fish larvae; Mormyridae; ontogeny; reproduction
subject: 570 Biowissenschaften, Biologie
subject: 590 Tiere (Zoologie)

description: The emergence and development of the electric-organ discharge (EOD) in larvae and juvenile bulldog Marcusenius macrolepidotus was investigated. Larvae hatched 4–5 days after spawning, and the first EODs were recorded on days 9 and 10 at a standard length (LS) of c. 6·5 mm. The larval EOD waveform was virtually monopolar, with a strong head-positive phase followed by a weak head-negative phase of long duration. A small separate potential preceded the EOD by c. 1·6 ms (believed to represent postsynaptic potential from electrocyte stalks). In contrast to previous reports on Pollimyrus adspersus with its distinct larval and adult EODs, in M. macrolepidotus there was a gradual transformation of the larval into the adult EOD waveform. The transformation started at an LS of c. 17 mm (at an age of c. 40 days), first indications being a decrease in duration of the head-negative phase, and an increase of its peak amplitude relative to that of the head-positive phase. Still later, the weak postpotential of the adult EOD emerged on the rising edge of the head-negative phase. The transformation was nearly completed at an LS of c. 30 mm (at an age of c. 60 days). Evolutionary and behavioural consequences of this alternative path of EOD ontogeny are discussed.