cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Computational Study of the Magnesium Bonds in Turbo Grignard Reagents
Creators: name: PHAM, ANH
name: Bui, Johnny
name: Foreman, Kenneth
name: Paige, Mikell
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: High-yielding formation of Grignard reagents from various organic halides is frequently challenging. A two-step process has been developed in which a very inexpensive material can react at low yield to form a Grignard which is then employed in a high-yielding exchange reaction to form the desired Grignard. The second step typically employs lithium chloride to form so called “turbo” Grignards that enable exchange at a temperature which prevents reactions with other functionalities on the organic halide. Most exchanges go from an alkyl Grignard to an aryl Grignard. However, few of these “turbo” Grignards are well characterized and exchanges with other alkyl halides is also desirable. We hypothesize that the predictor of exchange is likely something simple, such as the Mg-halogen or Mg-C bond, and does not rely much on the transition state or solvent employed. To test this hypothesis, various aryl halide compounds from literature known to undergo exchange with isopropyl magnesium chloride (i-PrMgCl) were modelled computationally to compare how the Mg bond lengths changed. Data was generated for these compounds at the given B3LYP level of theory, using GAMESS with a cc-pvtz basis set from ASSIP intern Anh Pham and using TeraChem with a 6-31G basis set from research volunteer Johnny Bui. The Grignard i-PrMgCl and the turbo Grignard i-PrMgCl•LiCl served as controls. The addition of LiCl increased Mg-Cl bonds lengths and decreased bond orders, while the Mg-C bond lengths showed little to no variation. Calculations for the literature Grignard reagents in the absence of LiCl displayed shortened Mg-Cl bond lengths and increased bond orders compared to those for i-PrMgCl. This data suggests an increasing bond distance or decreasing bond order between Mg and Cl will create proper conditions for a “turbo” Grignard. Our data predict that Grignards with electron-withdrawing groups near the C-Mg bond are less suited for exchange. In future work, we plan to collaborate with Dr. Paige’s lab to experimentally test putative “turbo” Grignard designs that could enable exchange with other alkyl halides through attachment of electron releasing groups.
description: Journal of Student-Scientists' Research, Vol. 2 (2020)
The Belarusian Protests: A Spectacle of Aesthetic Resistance
Creators: name: Mavrodieva, Elisaveta
Publisher: name: University of Chicago
Year: 2021
Subjects: subject: Belarus
subject: Protests
subject: Protest Art
subject: Digital Ethnography
subject: Media Studies
subject: Post-Soviet spaces
subject: Telegram
subject: Aesthetic regime
subject: Ranciere

description: In this thesis, the 2020 Belarusian protests are analyzed visually. The central argument of this work is that many elements of the protests exemplify a collective and aesthetic restructuring of the authoritarian, patriarchal order. The Belarusian protestors acted as creative and political agents by engaging in a collective performance of political dissent. The protests are theoretcally explored as an art spectacle with relationship to social media and digital technology. This thesis bridges ongoing conversations in anthropology, media studies, art history and Belarusian studies to critically engage with Belarusian experiences. The 2020 Belarusian protests exemplified acts of contemporary decolonization through the participation in a collective act of performance art. The theoretical analysis of the Belarusian protests goes on to offer insight into the creative and interpretative potential for political resistance that exists in the entanglement of digital and material realities everywhere.
A Computational Study on Destabilizing Effects on Grignard Reagents
Creators: name: PHAM, ANH
name: VIJAY, SURUTHIKHA
name: PAIGE, CHLOE
name: MOON, ELLA
name: Foreman, Kenneth
name: Paige, Mikell
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: The diarylmethane derivative 4MDM shows beneficial immunomodulatory effects in models of pulmonary inflammation. We hypothesized that saturated carbocycles would improve solubility and stability of the compound. A Grignard reaction was proposed to make saturated analogues of 4MDM. However, formation of the Grignard reagent proved to be unreliable using traditional methods. Therefore, we worked to better understand formation of the Grignard reagent by a Mg/Cl exchange reaction. Traditionally, only the Mg-C bond was expected to be important for predicting stability. Ethynylmagnesium chloride, ethenylmagnesium chloride, and ethylmagnesium chloride were modeled as controls because of their known decreasing order of relative stability, which correlated with increasing bond lengths. All compounds were constructed through Avogadro and minimized via GAMESS with a STO 3G basis set using the B3LYP level of theory on the Argo Cluster supercomputer. Unsurprisingly, the shorter Mg-C bonds correlated with the increased stability of the compounds. When LiCl was added to the models, the Mg-Cl bonds became longer but the Mg-C bond remained constant. We concluded that increased Mg-Cl and Mg-C bond lengths indicate lower stability. We hypothesized that ethylmagnesium chloride derivatives with electron releasing groups (i.e., alpha Si, beta Si, or alpha O) would destabilize the Grignard reagent. The designs confirmed the predictions as hypothesized. Further, our results suggest LiCl is necessary to afford consistent behavior of the Grignard Reagent. Future directions include experimental validation of our results.
description: Journal of Student-Scientists' Research, Vol. 2 (2020)
Designing a De Novo Protein to Inhibit Shiga Toxin Expression in Pathogenic Escherichia coli
Creators: name: ALFARO, ALINA
name: Sayed, Ustina Abdel
name: Solomon, Lee A.
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: E. coli food poisoning is an issue well-known to the general population. Shiga toxin producing E. coli (STEC) are pathogenic strains of the bacteria often found at the root of outbreaks of foodborne illness. The Shiga toxin protein, encoded by the Stx gene in the bacterial chromosome, is responsible for the virulence of STEC food contamination. A natural repressor protein exists for the Stx gene, the lambda repressor protein (CI), but is cleaved by a variety of natural signals, notably by DNA damage which triggers the SOS response. This investigation aims to design and test several de novo proteins engineered to bind the Stx gene in E. coli, inhibiting the production of the Shiga toxin and reducing foodborne illness. A stable de novo four helix bundle protein from the Protein Data Bank serves as a base from which mutations are made. Mutations of our new inhibitor protein are made by applying knowledge of chemical principles in the program UCSF Chimera, and data evaluating protein binding is collected through Molecular Dynamics Simulations. The best protein designs will be tested in vitro to determine their binding constant relative to the target Stx gene. Due to the ongoing pandemic, only in silica design of the four helix bundle motif has been carried out. Thus far, 31 different mutated alpha helices have been created and are to be tested for their binding affinity using Chimera Molecular Dynamics Simulation. Our goal is to develop a protein that can bind to DNA tighter than the natural CI, minimizing food contamination.
description: Journal of Student-Scientists' Research, Vol. 2 (2020)
Bragg reflection waveguide as a source of wavelength-multiplexed polarization-entangled photon pairs
Creators: name: Svozilík, Jiří
name: Hendrych, Martin
name: Torres, Juan P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We put forward a new highly efficient source of paired photons entangled in polarization with an ultra-large bandwidth. The photons are generated by means of a conveniently designed spontaneous parametric down-conversion process in a semiconductor type-II Bragg reflection waveguide. The proposed scheme aims at being a key element of an integrated source of polarization-entangled photon pairs highly suitable for its use in a multi-user quantum-key-distribution system.
Publikasi Ilmiah: Struktur & Kaidah Penulisan
Creators: name: Nur, Syukri M
name: Yandri, Erkata
Publisher: name: Zenodo
Year: 2021
Subjects: Penulisan Ilmiah
Pengabdian masyarakat
Universitas Darma Persada
Energi Terbarukan

description: Presentasi singkat tentang penulisan ilmiah dengan bahasan pokok pada struktur dan kaidah penulisan ilmiah. Makalah ini disajikan pada acara BIMTEK PENYUSUNAN MANUSKRIP PUBLIKASI ILMIAH SEMESTER GENAP TAHUN AKADEMIK 2020/2021 yang diselenggarakan oleh LP2MK, Universitas Darma Persada, Jakarta pada tanggal 7-8 Juli 2021.
description: Dokumentas Tim Kerja
Driven translocation of a polymer: fluctuations at work
Creators: name: Dubbeldam, J. L. A.
name: Rostiashvili, V. G.
name: Milchev, A.
name: Vilgis, T. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The impact of thermal fluctuations on the translocation dynamics of a polymer chain driven through a narrow pore has been investigated theoretically and by means of extensive Molecular-Dynamics (MD) simulation. The theoretical consideration is based on the so-called velocity Langevin (V-Langevin) equation which determines the progress of the translocation in terms of the number of polymer segments, $s(t)$, that have passed through the pore at time $t$ due to a driving force $f$. The formalism is based only on the assumption that, due to thermal fluctuations, the translocation velocity $v=\dot{s}(t)$ is a Gaussian random process as suggested by our MD data. With this in mind we have derived the corresponding Fokker-Planck equation (FPE) which has a nonlinear drift term and diffusion term with a {\em time-dependent} diffusion coefficient $D(t)$. Our MD simulation reveals that the driven translocation process follows a {\em super}diffusive law with a running diffusion coefficient $D(t) \propto t^γ$ where $γ< 1$. This finding is then used in the numerical solution of the FPE which yields an important result: for comparatively small driving forces fluctuations facilitate the translocation dynamics. As a consequence, the exponent $α$ which describes the scaling of the mean translocation time $$ with the length $N$ of the polymer, $ \propto N^α$ is found to diminish. Thus, taking thermal fluctuations into account, one can explain the systematic discrepancy between theoretically predicted duration of a driven translocation process, considered usually as a deterministic event, and measurements in computer simulations. In the non-driven case, $f=0$, the translocation is slightly subdiffusive and can be treated within the framework of fractional Brownian motion (fBm).
description: 13 pages, 8 figures
title: Make Rome great again! Presenting the murder of Julius Caesar in the time of Facebook
Creators: name: Mihanović, Anđelko
Publisher: name: IMT Alti Studi Lucca
Year: 2020

description: The assassination of Julius Caesar is an event that changed the course of history of the known world. Even today, two thousand years after his assassination, Caesar still matters, and public discourse and popular culture are important areas of his reception. In contrast to most historical cases that deal with Caesar’s assassination, most recent cases, analyzed in this thesis, take the event down to the personal, individual, highly subjective, local level: a historical reenactment, a cinematic appropriation, and a theatrical staging in a prison. The research involved developing and creating intersections between a wide range of theoretical approaches in order best to interrogate the contemporary case studies of individuals who enact Caesar’s murder. The project is also complex because it involves different kinds of analysis of literary, ethnographic (itself both direct and indirect) and digital data, and it includes comparison across media (historical reenactment, prison theatre, film, digital) and across cultural communities (Roman reenactors, prisoners). In order to address the aforementioned questions I employ several methodologies: literary analysis, discourse analysis, and different methods from the field of Cultural Anthropology (semi-structured in-depth interviews, informal interviews, qualitative surveys, participant observation and unobtrusive observation for data collection, and thematic coding, ethnography and thick description for data analysis). These performances of the dictator’s assassination entail a sense of cultural heritage as a personal possession, heritage as therapy, heritage as shaping one’s national, local, political, social and gender identities. The historical reenactment proves to be a celebration of Julius Caesar, Romanness and of Roman roots of the Italian national identity and culture.
Predictability in the Atlantic Multidecadal Variability and its Connection with the Atlantic Meridional Overturning Circulation and the Mixed Layer Depth
Creators: name: CRAVEN, MEGAN
name: POTDAR, NITI
name: Martin, Jon
name: Burls, Natalie
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: The fluctuation of sea surface temperature in the Northern Atlantic on a multi-decadal time scale, referred to as Atlantic multidecadal variability (AMV), is a key driver of climate variability in surrounding regions. The scientific community is still unsure of the main cause and drivers for the AMV. In order to get a better understanding of the AMV, we analyzed the differences in the predictability of the AMV over two centuries (years 2645-2744 and 2856-2955) within a 3000-year long climate model simulation. These two centuries were chosen because the 2645-2744 century has an AMV that is more predictable than the 2856-2955 century. To understand the cause of these changes in predictability from one century to the next, we investigated the connection between the AMV, simulated mixed layer depth (MLD), Atlantic Meridional Overturning Circulation (AMOC) The MLD is the depth in the Ocean to where the temperature remains relatively similar to the surface temperature, while the AMOC is the large system of ocean currents which transports heat northward into the Atlantic. The century with a more predictable AMV (2645-2744) has deeper MLDs on average, therefore increased heat storage appears to be a plausible mechanism for why this century is more predictable. Looking at the differences in the AMOC, we have also concluded that this century had a stronger AMOC in the subtropics but weaker in the subpolar region. Therefore we concluded that the AMOC was not the most precise tool to measure the AMV. Our results suggest that a deeper MLD within a given century can allow for a more predictable AMV.
description: Journal of Student-Scientists' Research, Vol. 2 (2020)
Basal-Plane Nonlinear Susceptibility: A Direct Probe of the Single-Ion Physics in URu2Si2
Creators: name: Flint, Rebecca
name: Chandra, Premala
name: Coleman, Piers
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The microscopic nature of the hidden order state in URu2Si2 is dependent on the low-energy configurations of the uranium ions, and there is currently no consensus on whether it is predominantly 5f^2 or 5f^3. Here we show that measurement of the basal-plane nonlinear susceptibility can resolve this issue; its sign at low-temperatures is a distinguishing factor. We calculate the linear and nonlinear susceptibilities for specific 5f^2 and 5f^3 crystal-field schemes that are consistent with current experiment. Because of its dual magnetic and orbital character, a Γ_5 magnetic non-Kramers doublet ground-state of the U ion can be identified by $χ_1^c(T) \propto χ_3^\perp(T)$ where we have determined the constant of proportionality for URu2Si2.
description: 7 pages, 4 figures
Emanuelle Aurenche-Beau, Marcel Boldorf, Ralf Zschachlitz (dir.), RDA: Culture – critique – crise. Nouveaux regards sur l’Allemagne de l’Est, Villeneuve-d’Ascq (Presses universitaires du Septentrion) 2017
Creators: name: Yèche, Hélène
Publisher: name: Francia-Recensio
Year: 2018

description: .
description: Francia-Recensio, 2018/4
title:  Il culto della patria, del littorio e della decima musa Nazionalismo e cosmopolitismo negli allievi del CSC (1935-1938)
Creators: name: Andreazza  , Fabio
Publisher: name: RomaTrE-Press
Year: 2019

description: Il contributo è basato sui materiali d’archivio relativi agli allievi del primo corso di regia e perfezionamento (1935-1938) del Centro Sperimentale di Cinematografia, e cerca di mostrare come nei casi esaminati nazionalismo fascista e cosmopolitismo non siano antagonisti, perché investono piani diversi (i temi e le forme), che richiedono l’impiego di differenti scale di osservazione. È infatti variando la distanza focale dell’obiettivo che si possono comprendere adeguatamente le scelte adottate da questi giovani, fascisti militanti e cinefili.
description: Cinema e identità italiana
Reduced Meridional Sea Surface Temperature Gradients and Warmer Climates Produce Enrichment of Delta 18O in the Mid to High Latitudes
Creators: name: BAGALKOT, NEHA
name: WRIGHT, SAMUEL M.
name: Knapp, Scott
name: Burls, Natalie
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: The Pliocene is often seen as a potential analog for future climate change because of a similar configuration of continents and CO2 concentration as compared to the present day. A notable characteristic of the Pliocene is its weak mean east-west sea surface temperature (SST) gradient and meridional SST gradient in the Pacific. These reduced gradients could affect the global climate via the weakening of the Walker Circulation and of Hadley cells. In Burls and Fedorov 2014 (BF2014), by altering extra-tropical and tropical cloud albedo, these important characteristics were successfully reproduced using a global climate model (GCM). Here we take the resulting SST field from this Pliocene-like simulation, as well as other SST fields from the BF2014 study, and use them as a boundary parameter for another GCM, SPEEDY-IER. SPEEDY-IER is an atmospheric model that allows for the tracing of oxygen isotopes, namely O16 and O18. The ratio of these isotopes, d18O , has a known correlation with temperature and can be observed in the fossil record. Our results demonstrate the first-order control that temperature has on the d18O of precipitation in the mid- to high- latitudes, where experiments with a reduced meridional temperature gradient experience enrichment of d18O of precipitation in the high latitudes. In the future, d18O of precipitation derived from land-based fossil records can be used to verify our results.
description: Journal of Student-Scientists' Research, Vol. 2 (2020)
Spiralgang durch das Gelände des Sachunterrichts und seiner Didaktik: Walter Köhnlein: Sachunterricht und Bildung. Klinkhardt Verlag: Bad Heilbrunn 2012.
Creators: name: Fischer, Hans-Joachim
Publisher: name: Widerstreit Sachunterricht
Year: 2012
Subjects: subject: 000

description: In diesem Artikel geht es um die Besprechung des Buches von Walther Köhnlein.
Élise Petit, Musique et politique en Allemagne. Du IIIe Reich à l’aube de la guerre froide, Paris (PUPS) 2018
Creators: name: Pestel, Friedemann
Publisher: name: Francia-Recensio
Year: 2018

description: Élise Petit, Musique et politique en Allemagne. Du IIIe Reich à l’aube de la guerre froide, Paris (PUPS) 2018, 393 p. (Mondes contemporains), ISBN 979-10-231-0575-9, EUR 25,00.
description: Francia-Recensio, 2018/4
Strict Periodic Extreme Lattices
Creators: name: Schürmann, Achill
Publisher: name: arXiv
Year: 2012
Subjects: subject: Metric Geometry (math.MG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 52C17 (Primary) 11H55 (Secondary)

description: A lattice is called periodic extreme if it cannot locally be modified to yield a better periodic sphere packing. It is called strict periodic extreme if its sphere packing density is an isolated local optimum among periodic point sets. In this note we show that a lattice is periodic extreme if and only if it is extreme, that is, locally optimal among lattices. Moreover, we show that a lattice is strict periodic extreme if and only if it is extreme and non-floating.
description: 6 pages; to appear in AMS Contemporary Mathematics issue on "Diophantine Methods, Lattices, and Arithmetic Theory of Quadratic Forms", edited by Wai Kiu Chan, Lenny Fukshansky, Rainer Schulze-Pillot, and Jeff Vaaler
Colossal electroresistance in metal/ferroelectric/semiconductor tunnel diodes for resistive switching memories
Creators: name: Wen, Zheng
name: Li, Chen
name: Wu, Di
name: Li, Aidong
name: Ming, Naiben
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a tunneling heterostructure by replacing one of the metal electrodes in a metal/ferroelectric/metal ferroelectric tunnel junction with a heavily doped semiconductor. In this metal/ferroelectric/semiconductor tunnel diode, both the height and the width of the tunneling barrier can be electrically modulated due to the ferroelectric field effect, leading to a colossal tunneling electroresistance. This idea is implemented in Pt/BaTiO3/Nb:SrTiO3 heterostructures, in which an ON/OFF conductance ratio above 10$^4$ can be readily achieved at room temperature. The colossal tunneling electroresistance, reliable switching reproducibility and long data retention observed in these ferroelectric tunnel diodes suggest their great potential in non-destructive readout nonvolatile memories.
description: 17 pages, 3 figures. Supplemental information available upon request
title: Introduction to European Union internal market law
Creators: name: Torino, Raffaele
Publisher: name: RomaTrE-Press
Year: 2017

description: Il libro costituisce un’introduzione al diritto del mercato interno europeo ed illustra e analizza l’evoluzione della disciplina del mercato interno e le sue caratteristiche e categorie giuridiche principali (Cap. 1 – Raffaele Torino), la libera circolazione delle merci (Cap. 2 – Federico Raffaele), la libera circolazione delle persone (Cap. 3 – Filippo Palmieri), la libera prestazione dei servizi e il diritto di stabilimento (Cap. 4 – Arianna Paoletti) e la libera circolazione dei capitali e dei pagamenti (Cap. 5 – Ilaria Ricci).
Search for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The results of a search for direct pair production of heavy top-quark partners in 4.7 fb-1 of integrated luminosity from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector at the LHC are reported. Heavy top-quark partners decaying into a top quark and a neutral non-interacting particle are searched for in events with two leptons in the final state. No excess above the Standard Model expectation is observed. Limits are placed on the mass of a supersymmetric scalar top and of a spin-1/2 top-quark partner. A spin-1/2 top-quark partner with a mass between 300 GeV and 480 GeV, decaying to a top quark and a neutral non-interacting particle lighter than 100 GeV, is excluded at 95% confidence level.
description: 18 pages plus author list (40 pages total), 2 figures, 5 tables, submitted to Journal of High Energy Physics
Application of neural networks to spectral fitting of extragalactic jet emission
Creators: name: Tzavelas, Anastasios
name: Vasilopoulos, Georgios
name: Petropoulou, Maria
Publisher: name: Zenodo
Year: 2023
Subjects: Blazars
non thermal radiation
neural networks
bayesian modeling

description: Jets from supermassive black holes in the centers of active galaxies are the most powerful persistent sources of electromagnetic radiation in the Universe. Jets emit non-thermal radiation, with luminosity as high as 1048 erg/s, and their spectral energy distribution (SED) spans many decades in photon energy, i.e. from radio waves to gamma rays. To infer the physical conditions in the otherwise out-of-reach regions of extragalactic jets we usually rely on SED fitting, i.e. we compare observed SEDs with radiative models in order to measure the goodness-of-fit of the model to the data, and determine the best-fit values. Radiative models for jet emission are primarily numerical, as they require the solution of a system of stiff coupled partial differential equations describing the evolution of the distribution functions of radiating particles (relativistic leptons and/or hadrons) and photons. Such numerical codes tend to have a high computational complexity, especially in the case of hadronic models; each run can last from a few minutes up to a couple of hours. If such a model were to be used in a Markov Chain Monte Carlo (MCMC) algorithm, the overall execution time would become prohibitively long. In this work, machine learning is used to tackle the problem of high computational complexity in order to reduce the model evaluation time. An existing numerical code is executed in order to compose a leptonic dataset, which in turn is used to train a neural network. The trained neural network can make predictions in a few milliseconds and thus can be used instead of the actual numerical code. We use the trained network to fit observational data from an extra-galactic jet using Bayesian methods based on random walks and nested sampling algorithms. Our results demonstrate that our approach offers a viable alternative that could potentially replace expensive algorithms, especially when searching multi-parameter spaces.
Sebastian Rojek, Versunkene Hoffnungen. Die Deutsche Marine im Umgang mit Erwartungen und Enttäuschungen 1871–1930, München (De Gruyter Oldenbourg) 2017
Creators: name: Bonker, Dirk
Publisher: name: Francia-Recensio
Year: 2018

description: Sebastian Rojek, Versunkene Hoffnungen. Die Deutsche Marine im Umgang mit Erwartungen und Enttäuschungen 1871–1930, München (De Gruyter Oldenbourg) 2017, XII–513 S. (Quellen und Darstellungen zur Zeitgeschichte, 116), ISBN 978-3-11-052903-6, EUR 64,95.
description: Francia-Recensio, 2018/4
title: INFLUENCE OF AGING ON FATIGUE AND CREEP PROPERTIES OF POLYURETHANE
Creators: name:  Arutyunyan, A.R.
Publisher: name: Peter the Great St. Petersburg Polytechnic University
Year: 2020

description:  Polymers and polymer-based materials are intensive implemented in many areas of engineering  practice.  These  applications  frequently  have  a  very  high  performance  demand,  which  makes  their  long-term  characteristics  of  paramount  importance.  These  materials  were subject  to  degradation  due  to  environmental  factors,  including  light,  temperature, stress,  and  others.  Because  of  aging  process,  the  physical  and  mechanical  properties  of  these  materials  are significantly changed.  This  paper  is  devoted  to  the  experimental  investigations  of  this  problem.  The  research  program  includes  experiments  on  alternating  of fatigue,  creep,  long-term  climatic  and  deformation  aging  of  polyurethane  specimens.  Results have  shown  the  effect of considerable hardening and embrittlement during the aging process.
Nachhaltigkeit im Sachunterricht – Zwischen Aufklärung und politisch motivierter Bildungsarbeit
Creators: name: Langstrof, Marianne
Publisher: name: widerstreit sachunterricht
Year: 2017
Subjects: subject: 000

description: Nachhaltig zu leben ist ein entscheidendes Bildungsziel in Deutschland. Um dieses Leitbild zu realisieren, subventionierenBund und Länder zahlreiche Projekte zum Thema Nachhaltigkeit. Auch in den Sachunterricht vonGrundschulen soll die „Bildung für eine nachhaltige Entwicklung“ (BNE) verstärkt Einzug halten.1 Die dort schonlange etablierte „Umweltbildung“ gilt inzwischen als zu wenig entwicklungs-, werte- und kompetenzorientiert(vgl. Rost 2002, S. 10). Ziel ist stattdessen, die Zukunftsfähigkeit der Menschheit zu erhöhen, indem schon Grundschulkindermit den wichtigsten Nachhaltigkeitsthemen konfrontiert werden, durch deren Reflektion sie ein „richtiges“Verhalten hierzu entfalten lernen.
Additional file 9: of Transcriptomic analysis of Eruca vesicaria subs. sativa lines with contrasting tolerance to polyethylene glycol-simulated drought stress
Creators: name: Huang, Bang-Lian
name: Li, Xuan
name: Liu, Pei
name: Ma, Lan
name: Wu, Wenhua
name: Zhang, Xuekun
name: Li, Zaiyun
name: Huang, Bangquan
Publisher: name: figshare
Year: 2019
Subjects: subject: Physical Sciences not elsewhere classified
subject: Genetics
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Plant Biology

description: Table S5 Primers for quantitative RT-PCR. (DOCX 16 kb)
3.4 Jezični purizam i jezična kritika u njemačkom jeziku
Creators: name: Petrak, Iva
Publisher: name: Handbuch Europäische Sprachkritik Online
Year: 2018

description: -
description: Handbuch Europäische Sprachkritik Online, Bd. 3 (2018): Sprachpurismus und Sprachkritik
Parity effect in ground state localization of antiferromagnetic chains coupled to a ferromagnet
Creators: name: Holzberger, Simon
name: Schuh, Tobias
name: Blügel, Stefan
name: Lounis, Samir
name: Wulfhekel, Wulf
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the ground states of antiferromagnetic Mn nanochains on Ni(110) by spin-polarized scanning tunneling microscopy in combination with theory. While the ferrimagnetic linear trimer experimentally shows the predicted collinear classical ground state, no magnetic contrast was observed for dimers and tetramers where non-collinear structures were expected based on ab-initio theory. This striking observation can be explained by zero-point energy motion for even numbered chains derived within a classical equation of motion leading to non classical ground states. Thus, depending on the parity of the chain length, the system shows a classical or a quantum behavior.
description: 5 pages, 4 figures and supplementary information
Philipp-Stephan G. Freber, Der hellenistische Osten und das Illyricum unter Caesar
Creators: name: Jehne, Martin
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Rezension zu: Philipp-Stephan G. Freber, Der hellenistische Osten und das Illyricum unter Caesar. Palingenesia, Band 42. Franz Steiner Verlag, Stuttgart 1993. 226 Seiten.
description: Bonner Jahrbücher, Bd. 195.1995(1996): Bonner Jahrbücher
Andreas Schmidt-Colinet, Das Tempelgrab Nr. 36 in Palmyra
Creators: name: Schörner, Günther
Publisher: name: Bonner Jahrbücher
Year: 2018

description: Andreas Schmidt-Colinet, Das Tempelgrab Nr. 36 in Palmyra. Studien zur palmyrenischen Grabarchitektur und ihrer Ausstattung. In Zusammenarbeit mit K. Al-As’ad und C. Müting-Zimmer. Mit Beiträgen von P. Caselitz und U. Heimberg. Damaszener Forschungen, Band 4. Verlag Philipp von Zabern, Mainz 1992. Textband mit X, 213 Seiten; Tafelband mit 76 Tafeln, 73 Beilagen und 28 Plänen.
description: Bonner Jahrbücher, Bd. 195.1995(1996): Bonner Jahrbücher
Gravitational Waves from a Particle in Circular Orbits around a Schwarzschild Black Hole to the 22nd Post-Newtonian Order
Creators: name: Fujita, Ryuichi
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We extend our previous results of the 14th post-Newtonian (PN) order expansion of gravitational waves for a test particle in circular orbits around a Schwarzschild black hole to the 22PN order, i.e. $v^{44}$ beyond the leading Newtonian approximation where $v$ is the orbital velocity of a test particle. Comparing our 22PN formula for the energy flux with high precision numerical results, we find that the relative error of the 22PN flux at the innermost stable circular orbit is about $10^{-5}$. We also estimate the phase difference between the 22PN waveforms and numerical waveforms after a two-year inspiral. We find that the dephase is about $10^{-9}$ for $μ/M=10^{-4}$ and $10^{-2}$ for $μ/M=10^{-5}$ where $μ$ is the mass of the compact object and $M$ the mass of the central supermassive black hole. Finally, we construct a hybrid formula of the energy flux by supplementing the 4PN formula of the energy flux for circular and equatorial orbits around a Kerr black hole with all the present 22PN terms for the case of a Schwarzschild black hole. Comparing the hybrid formula with the the full numerical results, we examine the performance of the hybrid formula for the case of Kerr black hole.
description: 22 pages, additional datafiles are available at this http URL
Publikasi Ilmiah UNSADA: Fakta dan Harapan.
Creators: name: Nur, Syukri M
name: Yandri, Erkata
Publisher: name: Zenodo
Year: 2021
Subjects: Bimbingan Teknis
Pengabdian Masyarakat
Universitas Darma Persada
Energi Terbarukan

description: Presentasi ini disajikan dalam rangka Bimbingan Teknis Penulisan Ilmiah di Kalangan Civitas Akademik UNSADA yang diselenggarakan oleh LP2MK pada tanggal 7-8 Juli 2021 secara Online.
description: Dokumentasi Tim Kerja Program Studi Energi Terbarukan Universitas Darma Persada
title: High-pressure high-temperature behavior of polymer derived amorphous B-C-N
Creators: name: Bhat, Shrikant
name: Lauterbach, Stefan
name: Dzivenko, Dmytro
name: Lathe, Christian
name: Bayarjargal, Lkhamsuren
name: Schwarz, Marcus
name: Kleebe, Hans-Joachim
name: Kroke, Edwin
name: Winkler, Björn
name: Riedel, Ralf
Publisher: name: IOP Publishing
Year: 2023

description: Dense diamond-like BCN compounds are of interest due to their extreme hardness and predicted excellent thermal and chemical stability, which are superior to those of diamond and c-BN. Here, we report on the high-pressure high-temperature (HP-HT) behavior of amorphous BC₂N and BC₄N -as potential precursors for HP-HT synthesis of diamond-like BCN. Prepared via hydroboration reaction of piperazine borane and pyridine borane, respectively, amorphous BC₂N and BC₄N are characterized by well-mixed B-N, C-C and C-N bonds, confirmed by XPS analysis. These BCN compositions were subjected to pressures between 5-12 GPa and temperatures up to 1700 °C using multi-anvil apparatus and toroid-type press. In- and ex-situ X-ray diffraction reveals the decomposition of BC₄N to graphite and h-BN between 5 and 12 GPa above 500 °C, in contrast to BC₂N which remains amorphous up to 1600 °C.
Demonstration of an inductively coupled ring trap for cold atoms
Creators: name: Pritchard, J. D.
name: Dinkelaker, A. N.
name: Arnold, A. S.
name: Griffin, P. F.
name: Riis, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We report the first demonstration of an inductively coupled magnetic ring trap for cold atoms. A uniform, ac magnetic field is used to induce current in a copper ring, which creates an opposing magnetic field that is time-averaged to produce a smooth cylindrically symmetric ring trap of radius 5 mm. We use a laser-cooled atomic sample to characterise the loading efficiency and adiabaticity of the magnetic potential, achieving a vacuum-limited lifetime in the trap. This technique is suitable for creating scalable toroidal waveguides for applications in matterwave interferometry, offering long interaction times and large enclosed areas.
description: 12 pages, 6 figures
A simple model of the chaotic eccentricity of Mercury
Creators: name: Boué, Gwenaël
name: Laskar, Jacques
name: Farago, François
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Mercury's eccentricity is chaotic and can increase so much that collisions with Venus or the Sun become possible (Laskar, 1989, 1990, 1994, 2008, Batygin & Laughlin, 2008, Laskar & Gastineau, 2009). This chaotic behavior results from an intricate network of secular resonances, but in this paper, we show that a simple integrable model with only one degree of freedom is actually able to reproduce the large variations in Mercury's eccentricity, with the correct amplitude and timescale. We show that this behavior occurs in the vicinity of the separatrices of the resonance g1-g5 between the precession frequencies of Mercury and Jupiter. However, the main contribution does not come from the direct interaction between these two planets. It is due to the excitation of Venus' orbit at Jupiter's precession frequency g5. We use a multipolar model that is not expanded with respect to Mercury's eccentricity, but because of the proximity of Mercury and Venus, the Hamiltonian is expanded up to order 20 and more in the ratio of semimajor axis. When the effects of Venus' inclination are added, the system becomes nonintegrable and a chaotic zone appears in the vicinity of the separatrices. In that case, Mercury's eccentricity can chaotically switch between two regimes characterized by either low-amplitude circulations or high-amplitude librations.
description: 12 pages, 6 figures, A&A in press
Self-similar continued root approximants
Creators: name: Gluzman, S.
name: Yukalov, V. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A novel method of summing asymptotic series is advanced. Such series repeatedly arise when employing perturbation theory in powers of a small parameter for complicated problems of condensed matter physics, statistical physics, and various applied problems. The method is based on the self-similar approximation theory involving self-similar root approximants. The constructed self-similar continued roots extrapolate asymptotic series to finite values of the expansion parameter. The self-similar continued roots contain, as a particular case, continued fractions and Padé approximants. A theorem on the convergence of the self-similar continued roots is proved. The method is illustrated by several examples from condensed-matter physics.
description: Latex file, 13 pages
Extended nonlocal chiral-quark model for the heavy-light quark systems
Creators: name: Nam, Seung-il
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this talk, we report the recent progress on constructing a phenomenological effective model for the heavy-light quark systems, which consist of (u,d,s,c,b) quarks, i.e. extended nonlocal chiral-quark model (ExNLChQM). We compute the heavy-meson weak-decay constants to verify the validity of the model. From the numerical results, it turns out that (f_D, f_B, f_{D_s}, f_{B_s})=(207.54,208.13,262.56,262.39) MeV. These values are in relatively good agreement with experimental data and various theoretical estimations.
description: 3 pages, 4 figures, Talk given at the 20th International IUPAP Conference on Few-Body Problems in Physics (FB20), 20~25 August 2012, Fukuoka, Japan
title: Επεξεργασία συνθετικών δεδομένων σεισμικής ανάκλασης από το Ιόνιο με τεχνικές σεισμικής χωροθέτησης
Creators: name: Λεοντιδης Λεωνιδας
Publisher: name: Technical University of Crete
Year: 2020

description: Αντικείμενο της παρούσας Διπλωματικής Εργασίας είναι η επεξεργασία και ερμηνεία συνθετικών δεδομένων της μεθόδου της σεισμικής ανάκλασης για τον θαλάσσιο χώρο στην περιοχή των Παξών, Ιονίου Πελάγους. Για την πειραματική διαδικασία χρησιμοποιήθηκαν αλγόριθμοι οι οποίοι αναπτύχθηκαν στο Εργαστήριο Εφαρμοσμένης Γεωφυσικής, Μηχανικών Ορυκτών Πόρων στο Πολυτεχνείο Κρήτης.
Μετά την παραγωγή των συνθετικών δεδομένων,  ακολούθησε η επεξεργασία και η αξιολόγηση των δεδομένων για την εύρεση πιθανών παγίδων υδρογονανθράκων στον υπό μελέτη θαλάσσιο χώρο.
Στα πρώιμα στάδια της μελέτης, δημιουργήθηκαν το σεισμικό μοντέλο και η πρώτη ψηφιακή προσομοίωση της περιοχής ενδιαφέροντος.
Ακολουθήθηκε αλληλουχία επεξεργασιών, οι οποίες σκοπεύουν στην απεικόνιση των δομών στο υπέδαφος. Η αλληλουχία αυτή περιγράφεται από 3 βασικές μεθόδους. Η σεισμική χωροθέτηση και υπέρθεση, που έχει σαν στόχο την ανακατασκευή και σωστή τοποθέτηση των επιφανειών ανάκλασης που παρουσιάζουν κλίση σε μία τομή υπέρθεσης. Η Γεωμετρική διασπορά, η οποία σκοπεύει στην αντιστάθμιση των πλατών και τα φίλτρα της αυτόματης ενίσχυσης (AEC-AGC), ενώ στη συνέχεια ακολουθείται το φίλτρο Trace Balance, που ενισχύει τα πλάτη των ανακλώμενων σεισμικών κυμάτων.
Συνοψίζοντας, έπειτα από την δημιουργία, επεξεργασία και απεικόνιση των τομών στην περιοχή μελέτης, γίνεται σαφής αναφορά στα αποτελέσματα και συμπεράσματα που προκύπτουν. Στις χωροθετημένες σεισμικές τομές παρατηρείται εμφάνιση μόνο του 1ου και 2ου ανακλαστήρα και όχι των βαθύτερων. Οι καλύτερες τομές χωροθέτησης που προέκυψαν είναι για ταχύτητα διάδοσης 0.9xVrms και 1500m/s στο πρώτο στρώμα , καθώς και η εφαρμογή φίλτρου AEC με 1.25s παράθυρο. Η αραιή τοποθέτηση των πηγών δεν έχει αποφέρει τα επιθυμητά αποτελέσματα, και για αυτό παρατηρείται μη επιτυχής απεικόνιση σε ορισμένα σημεία. Οι πολλαπλές ανακλάσεις του πυθμένα τους επισκιάζουν τους βαθύτερους ανακλαστήρες.
Two-photon interference using background-free quantum frequency conversion of single photons from a semiconductor quantum dot
Creators: name: Ates, Serkan
name: Agha, Imad
name: Gulinatti, Angelo
name: Rech, Ivan
name: Rakher, Matthew T.
name: Badolato, Antonio
name: Srinivasan, Kartik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show that quantum frequency conversion (QFC) can overcome the spectral distinguishability common to inhomogeneously broadened solid-state quantum emitters. QFC is implemented by combining single photons from an InAs quantum dot (QD) at 980 nm with a 1550 nm pump laser in a periodically-poled lithium niobate (PPLN) waveguide to generate photons at 600 nm with a signal-to-background ratio exceeding 100:1. Photon correlation and two-photon interference measurements confirm that both the single photon character and wavepacket interference of individual QD states are preserved during frequency conversion. Finally, we convert two spectrally separate QD transitions to the same wavelength in a single PPLN waveguide and show that the resulting field exhibits non-classical two-photon interference.
description: Supercedes arXiv:1205.2218
title: Нестатистическая релятивистская кинетическая теория классических заряженных частиц
Creators: name: Захаров, Анатолий
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2020

description: Выполнено исключение полевых переменных в полной системе уравнений эволюции классической системы зарядов и порожденного ими электромагнитного поля. Получена точная замкнутая релятивистская негамильтонова система нелокальных кинетических уравнений, описывающая эволюцию системы зарядов в терминах их микроскопических (т.е. не вероятностных) функций распределения. Решения этой системы уравнений необратимы во времени, а также обладают свойством эредитарности (наследственности).
Module Theorem for The General Theory of Stable Models
Creators: name: Babb, Joseph
name: Lee, Joohyung
Publisher: name: arXiv
Year: 2012
Subjects: subject: Artificial Intelligence (cs.AI)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: The module theorem by Janhunen et al. demonstrates how to provide a modular structure in answer set programming, where each module has a well-defined input/output interface which can be used to establish the compositionality of answer sets. The theorem is useful in the analysis of answer set programs, and is a basis of incremental grounding and reactive answer set programming. We extend the module theorem to the general theory of stable models by Ferraris et al. The generalization applies to non-ground logic programs allowing useful constructs in answer set programming, such as choice rules, the count aggregate, and nested expressions. Our extension is based on relating the module theorem to the symmetric splitting theorem by Ferraris et al. Based on this result, we reformulate and extend the theory of incremental answer set computation to a more general class of programs.
description: To appear in Theory and Practice of Logic Programming (TPLP)
Developing a comprehensive understanding of attrition in an NHS weight management service for adults with obesity
Creators: name: Everitt, Jordan
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Health and community services

description: The aim of this thesis was to comprehensively understand attrition in an NHS weight management service for adults with obesity. Both quantitative and qualitative methods were utilised for this thesis, which consisted of three research phases. The first phase was a systematic review of attrition in weight management interventions for adults with obesity, which was conducted to provide a synthesis of existing literature and inform the primary research. Phase two involved semi-structured interviews to explore 37 participants’ experiences of the weight management service, focused on attrition. Phase 3 was an observational cohort study analysed using logistic regression to identify predictors of completion and early dropout in a sample of 329 participants from the weight management service. Ethical approval was granted by Cardiff Metropolitan University (ID 10594 / PGR-1162), and Wales REC 7 (Ref 18/WA/1021) (IRAS: 240002).
title: L’italiano di legno nello specchio di Hollywood La ricezione del Pinocchio Disney in Italia tra fascismo e dopoguerra
Creators: name: Mazzei, Luca
Publisher: name: RomaTrE-Press
Year: 2019

description: Il saggio analizza la ricezione in Italia del film Pinocchio di Walt Disney, tra il 1939 (quando la sua distribuzione in Italia fu preannunciata come imminente) e il 1947 (quando il film fu effettivamente distribuito in Italia). Dal confronto con il film della Disney, la cultura italiana (che fino ad allora vedeva nel libro di Collodi solo una bella storia per bambini) creò una nuova interpretazione di Pinocchio. Da una parte Pinocchio divenne l’immagine più invariabile della tradizione italiana. Dall’altro, la dimostrazione pratica di come l’identità italiana fosse ormai sul punto di entrare nella modernità.
description: Cinema e identità italiana