cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Brazing in SiH4-Doped Inert Gases: A New Approach to an Environment Friendly Production Process
Creators: name: Holländer, U.
name: Wulff, D.
name: Langohr, A.
name: Möhwald, K.
name: Maier, H.J.
Publisher: name: Seoul : Korean Society for Precision Engineering
Year: 2020
Subjects: subject: Brazing
subject: Deoxidation
subject: Inert gas
subject: Monosilane
subject: Physical model
subject: Production
subject: Coatings
subject: Inert gases
subject: Metallic compounds
subject: Oxygen
subject: Vacuum applications
subject: Environment friendly
subject: Metallic material
subject: Monosilanes
subject: Oxygen-free process
subject: Physical mechanism
subject: Production process
subject: Protective atmospheres
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Engineering under protective atmospheres or in vacuum allows the production of materials and components, where the absence of oxygen is an essential requirement for a successful processing. Ideally, joining or coating of (and with) metallic materials needs oxide free material surfaces, in order to achieve durable joints or coatings. Using the established technology of brazing in controlled atmosphere, fundamental physical mechanisms for deoxidation of metal surfaces are presented and the role of oxygen and water residue in the process atmosphere is analyzed. Furthermore, the doping of gases with monosilane for generating virtually oxygen-free process atmospheres is introduced and its advantages for an oxygen-free production are discussed. © 2019, The Author(s).
Digital Roofs. Technischer Workflow der Dokumentation antiker Dachziegel
Creators: name: Fless, Friederike
name: Rheeder, Annalize
Publisher: name: Forum for Digital Archaeology and Infrastructure
Year: 2023

description: Im Rahmen des Projektes »Digital Roofs« wurde ein Workflow zur standardisierten Dokumentation antiker Dachziegel entwickelt. Die einzelnen Arbeitsstationen, Technologien und Methoden werden in diesem Artikel knapp beschrieben. Beispiel ist die dreiwöchige Kampagne zur Dokumentation der Dachziegel auf dem Kerameikos Athen.
description: Forum for Digital Archaeology and Infrastructure, Faszikel 2023
Persistente IDs für Bohrkerne und Proben – IGSN für die Archäologie
Creators: name: Hohle, Isabel A.
name: Braune, Ellen
name: Bemmann, Matthias
Publisher: name: Forum for Digital Archaeology and Infrastructure
Year: 2023

description: Der kurze Beitrag stellt die Anwendung der International Generic Sample Number (IGSN) als Persistent Identifier (PID) für Bohrkerne und (Sediment-) Proben aus archäologischen Kontexten vor. Bohrprospektionen als minimal-invasive archäologische Methode und der Boden als archäologisches Archiv gewinnen zunehmend an Bedeutung. An der Römisch-Germanischen Kommission (RGK) hat sich diese Methode in den letzten Jahren stärker etabliert. Umso wichtiger wurde es daher, diese Feldforschungsmethode in ein nachhaltiges Konzept des Forschungsdatenmanagements einzubinden. IGSN bietet hier ein in den Geowissenschaften bereits etabliertes System, das sich an den FAIR-Prinzipien orientiert und sich ebenso gut für archäologische Kontexte eignet.
description: Forum for Digital Archaeology and Infrastructure, Faszikel 2023
Scratching the surface: A new species of Bent-toed Gecko (Squamata, Gekkonidae, Cyrtodactylus) from Timor-Leste of the darmandvillei group marks the potential for future discoveries
Creators: name: Chan, Kin Onn
Publisher: name: figshare
Year: 2022
Subjects: subject: 60301 Animal Systematics and Taxonomy
subject: FOS: Biological sciences

description: Supplementary material for the paper "Scratching the surface: A new species of Bent-toed Gecko (Squamata, Gekkonidae, Cyrtodactylus) from Timor-Leste of the darmandvillei group marks the potential for future discoveries"
 Files included in this package: 1) BEAST phylogeny 2) IQ-TREE phylogeny 3) Raw morphometric data 4) Size-corrected morphometric data 5) Table containing GenBank accesion numbers of all samples used in this study (Table S1)
Optimal initiation of a GLWB in a variable annuity: no arbitrage approach
Creators: name: Huang, H.
name: Milevsky, M. A.
name: Salisbury, T. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Portfolio Management (q-fin.PM)
subject: FOS: Economics and business

description: This paper offers a financial economic perspective on the optimal time (and age) at which the owner of a Variable Annuity (VA) policy with a Guaranteed Living Withdrawal Benefit (GLWB) rider should initiate guaranteed lifetime income payments. We abstract from utility, bequest and consumption preference issues by treating the VA as liquid and tradable. This allows us to use an American option pricing framework to derive a so-called optimal initiation region. Our main practical finding is that given current design parameters in which volatility (asset allocation) is restricted to less than 20%, while guaranteed payout rates (GPR) as well as bonus (roll-up) rates are less than 5%, GLWBs that are in-the-money should be turned on by the late 50s and certainly the early 60s. The exception to the rule is when a non-constant GPR is about to increase (soon) to a higher age band, in which case the optimal policy is to wait until the new GPR is hit and then initiate immediately. Also, to offer a different perspective, we invert the model and solve for the bonus (roll-up) rate that is required to justify delaying initiation at any age. We find that the required bonus is quite high and more than what is currently promised by existing products. Our methodology and results should be of interest to researchers as well as to the individuals that collectively have over \$1 USD trillion in aggregate invested in these products. We conclude by suggesting that much of the non-initiation at older age is irrational (which obviously benefits the insurance industry.)
Ionenkomplexierende leitfähige Polymere auf der Basis von Pyrrol-Derivaten und deren Verwendung als Sensormaterialien
Creators: name: Peters, Matthias
Publisher: name: Hannover : Universität Hannover
Year: 1999
Subjects: subject: Functionalised conductive polymers
subject: crown ether
subject: ion sensor
subject: electrochemistry
subject: Alkalimetallion
subject: Ionenselektive Elektrode
subject: Komplexbildungsreaktion
subject: Kronenether
subject: Leitfähige Polymere
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
title: Review of Patients with 50-69% Internal Carotid Artery Stenosis over a 3 Year Period
Creators: name: Murray, Nina
Publisher: name: Technological University of Dublin
Year: 2018

description: Purpose: Carotid artery stenosis (CAS) is defined as the presence of significant narrowing of the arteries of the extracranial carotid system due to the presence of atherosclerotic plaque and affects up to 10% of people over 65 years (Goessens et al 2007). Management of 50-69% stenosis is centred on medical optimisation and risk factor modification. Surgical intervention is typically reserved for patients with stenosis of > 70%. The primary aim of the study is to determine if asymptomatic carotid artery disease causing a 50-69% internal carotid artery stenosis (ICAS) typically progressed to a >70% stenosis, thereby evaluating the necessity of annual Colour Duplex follow-up in patients presenting with a 50-69% stenosis. Additionally the study aimed to determine if ultrasound monitoring of moderate ICAS provided markers able to identify any predisposing risk factors associated with progression of ICAS.

Methods: All Carotid Duplex scans performed in the Vascular Laboratory in the Mater Misericordiae University Hospital (MMUH) from January 2007 and December 2009 were retrospectively reviewed by the same experienced vascular physiologist. All patients who presented with unilateral or bilateral asymptomatic internal carotid artery stenosis of 50-69% on their first visit were included in this study and followed up until December 2011. Patients who presented with a non-haemodynamically significant internal carotid artery stenosis of <50% or >70% bilaterally, a history of carotid surgery or with no follow up scan performed were excluded from the study.

Results: The study examined the results of the scans of 4573 patients. Of the 4573 patients 876 were found to have a 50-69% stenosis at their initial scan. Of these, 287 patients were excluded from the study for various reasons leaving 589 patients in this study. Of the 589 patients included in the study, progression of ICAS was observed 17.3% of patients. A number of risk factors were analysed to determine their impact on disease progression. Positive smoking history, male gender and positive cardiac history were all found to have a significant correlation to disease progression.

Conclusion: As 17.3% of patients progressed to a >70% internal carotid artery stenosis over the course of the study it is evident that there was a significant rate of ICAS progression noted in this cohort of patients.
title: Quaternary treatment according to the proposal for a recast of the EU Urban Wastewater Treatment Directive and its monetary implications for candidate countries (e.g. Serbia)
Creators: name: Badhofer, Ana
Publisher: name: TU Wien
Year: 2023
Subjects: subject: Wastewater Treatment
subject: Serbia
subject: Micropolutants

description: After 30 years the Council Directive concerning urban wastewater treatment from 1991 has been evaluated and an Impact Assessment led to a Proposal for revised regulations.Therein included are new policy options serving the purpose of addressing prevailing deficits after an overall satisfactory implementation of the Directive in EU member states.One new policy is addressing the removal of micro pollutants which are of emerging concern given the fast growth of anthropogenic pollution with pharmaceuticals,microplastics and cosmetics entering natural waterbodies despite conventional (secondary & tertiary) wastewater treatment. As a solution, an additional fourth treatmentstage is suggested following tertiary treatment which has so far primarily achieved nutrient removal. This leads to renewed challenges for EU member states, but even more so, for EU candidate countries, where the state of infrastructure development has yet toachieve compliance with the existent requirements according to the EU Urban Wastewater Treatment Directive. The road to EU integration for a representative EU candidate country such as Serbia is depending on the alignment to EU legislation and has faced institutional, demographic, and monetary challenges ever since its initiation.Furthermore, most of the EU candidate countries, and so does Serbia, lie within the Danube River Basin, a catchment area partially covered by EU member states, and therefore partly subject to strict environmental protection regulations. Compliance of other countries in the basin would therefore be very effective, yet costly. At the exampleof Serbia, the minimum capital expenditures for the implementation of the prevailing legislation according to the EU Urban Wastewater Treatment Directive would amount toa minimum 5.5 billion Euro. Depending on which method is chosen for quaternary treatment (ozonation, powdered, or activated carbon), additional investment costs areestimated to amount to 65 million Euro at the moment. Two approaches were taken tocalculate the total annualized costs: the cost function form the Impact Assessment of the European Commission and an evaluation of Feasibility Studies from German wastewater treatment plants. Findings of this Master Thesis show that annual capital expenditures,however, only make up 35% of the total costs of quaternary treatment over its lifetime,and annual operational expenditures play a bigger role on the long run.
Product Configuration with Bayesian Network
Creators: name: Plappert, Stefan
name: Gembarski, Paul Christoph
name: Lachmayer, Roland
name: University Of Novi Sad-Faculty Of Technical Sciences Department Of Industrial Engineering And Management
Publisher: name: Novi Sad : University of Novi Sad
Year: 2020
Subjects: subject: Product Configuration
subject: Recommender System
subject: Bayesian Network
subject: Knowledge-based System
subject: Engineering Design
subject: FOS: Other engineering and technologies
subject: Produktkonfiguration
subject: Empfehlungssysteme
subject: Bayes'sches Netzwerk
subject: wissensbasiertes System
subject: Konstruktion
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: For the satisfaction of individual customer requirements, products with many options are offered in mass customization. However, in the area of ecommerce, the large number of possible product configurations can overwhelm the customer, as he or she is not supported by a human sales expert. To minimize the customer’s overload, this paper examines the combination of a knowledge-based product configurator with an upstream probabilistic recommender system to provide a quick, individual and dynamic initial orientation for the customer. The application of the approach is demonstrated using an example from engineering design.
Förvärvspolicy för SND CARE
Creators: name: Swedish National Data Service
Publisher: name: Zenodo
Year: 2022
Subjects: SND
Swedish national data service
Svensk nationell datatjänst
collection policy
acquisition policy
research data
repository
open data
open access
policy
DAU
Data Access Unit

description: Collection policy for SND CARE

This document describes the policy that SND has established regarding the principles for which research data can be deposited with SND CARE.

 

Förvärvspolicy för SND CARE

Detta dokument beskriver den policy som SND har fastslagit gällande principerna för vilka forskningsdata som kan deponeras vid SND CARE.
Transmission of SARS-CoV-2 in the workplace: Key findings from a rapid review of the literature
Creators: name: Cox, Jennie
name: Christensen, Brian
name: Burton, Nancy
name: Dunn, Kevin H.
name: Finnegan, Mikaela
name: Ruess, Ana
name: Estill, Cherie
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: At the beginning of the COVID-19 pandemic, the primary route of transmission of the SARS-CoV-2 virus was not well understood. Research gathered from other respiratory infectious diseases, including other coronaviruses, was the basis for the initial perceptions for transmission of SARS-CoV-2. To better understand transmission of SARS-CoV-2, a rapid literature review was conducted from literature generated 19 March 2020, through 23 September 2021. 18,616 unique results were identified from literature databases and screened. Of these, 279 key articles were reviewed and abstracted covering critical topics such as environmental/workplace monitoring, sampling and analytical method evaluation, and the ability of the virus to remain intact and infectious during sampling. This paper describes the results of the rapid literature review, which evaluated pathways that contribute to transmission as well as the strengths and limitations of current sampling approaches. This review also evaluates how different factors, including environmental conditions and surface characteristics, could impact the transmission potential of SARS-CoV-2. A continual rapid review in the midst of a pandemic proved particularly useful for quickly understanding the transmission parameters of the virus and enabled us to comprehensively assess literature, respond to workplace questions, and evaluate our understanding as the science evolved. Air and surface sampling with the accompanying analytical methods were not generally effective in recovering SARS-CoV-2 viable virus or RNA in many likely contaminated environments. In light of these findings, the development of validated sampling and analysis methods is critical for determining worker exposure to SARS-CoV-2 and to assess the impact of mitigation efforts. Copyright © 2023 American Association for Aerosol Research
Nucleon Compton scattering in the Dyson-Schwinger approach
Creators: name: Eichmann, Gernot
name: Fischer, Christian S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the nucleon's Compton scattering amplitude in the Dyson-Schwinger/Faddeev approach. We calculate a subset of diagrams that implements the nonperturbative handbag contribution as well as all t-channel resonances. At the quark level, these ingredients are represented by the quark Compton vertex whose analytic properties we study in detail. We derive a general form for a fermion two-photon vertex that is consistent with its Ward-Takahashi identities and free of kinematic singularities, and we relate its transverse part to the onshell nucleon Compton amplitude. We solve an inhomogeneous Bethe-Salpeter equation for the quark Compton vertex in rainbow-ladder truncation and implement it in the nucleon Compton scattering amplitude. The remaining ingredients are the dressed quark propagator and the nucleon's bound-state amplitude which are consistently solved from Dyson-Schwinger and covariant Faddeev equations. We verify numerically that the resulting quark Compton vertex and nucleon Compton amplitude both reproduce the pion-photon transition form factor when the pion pole in the t-channel is approached.
description: 36 pages, 10 figures, 5 tables
Detektion von Konstruktionsfehlern durch eine automatisierte Objekterkennung mittels Deep Learning
Creators: name: Müller, Patrik
name: Gembarski, Paul Christoph
name: Lachmayer, Roland
Publisher: name: Essen : Universität Duisburg-Essen
Year: 2020
Subjects: subject: Computer Vision
subject: Deep Learning
subject: CNN
subject: YOLO
subject: YOLOv4
subject: AI
subject: Custom Object Detection
subject: KI
subject: benutzerdefinierte Objektdetektion
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik

description: In der Produktentwicklung gelten diverse Richtlinien, an denen sich Ingenieure orientieren. Letztendlich sind aber die Erfahrungen des jeweiligen Anwenders dafür verantwortlich, ob eine Konstruktion korrekt gestaltet wird. Dieser Beitrag bietet einen Ansatz zur automatisierten Anwendung dieses Erfahrungswissens durch die Objekterkennung mittels Deep Learning. Dafür wird ein neuronales Netz anhand eines Beispiels so trainiert, dass es gießgerechte Gestaltungsmerkmale in einer Konstruktion erkennt und klassifiziert. Die Objekterkennung wird mithilfe des YOLOv4-Algorithmus realisiert, indem zweidimensionale Schnittansichten des Bauteils vom neuronalen Netz analysiert werden. Des Weiteren werden zwei Methoden zur dreidimensionalen Rekonstruktion der Schnittansichten vorgestellt. Abschließend wird die Methode bewertet und kritisch gewürdigt.
IIIF : historique, API existantes et possibilités
Creators: name: Robineau, Régis
name: Sajdak, Cécile
Publisher: name: Zenodo
Year: 2024
Subjects: IIIF
interopérabilité
Biblissima
Ministère de la Culture
Musées
Archives
Bibliothèques

description: Présentation d'introduction à IIIF donnée le 13 septembre 2024 dans le cadre du Webinaire IIIF (RETEX infrastructures, organisations, usages) organisé par le Ministère de la Culture.
description: Ce travail a bénéficié d'une aide de l'État gérée par l'Agence Nationale de la Recherche au titre du programme d'Investissements d'avenir intégré à France 2030 portant la référence ANR-21- ESRE-0005 (Biblissima+).
Über die Wirkung von UV-Strahlen in somatischen Zellen
Creators: name: Glubrecht, Hellmut
Publisher: name: Berlin, Boston : De Gruyter
Year: 1953
Subjects: subject: UV-Wirkung
subject: Pflanzenzellen
subject: Protoplasma
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Die UV-Wirkung in somatischen Pflanzenzellen wird im Hinblick auf die verschiedenartigen Reaktionen untersucht, die sie im Protoplasma hervorruft. Der progressive Schädigungsverlauf wird unter variierten physikalischen Bedingungen verfolgt. Es ergibt sich ein sehr differenziertes Bild der Strahlenwirkung, das eine treffertheoretische Analyse im Sinne der Ermittlung einzelner empfindlicher Bereiche ausschließt.
Marked point processes for the automatic detection of bomb craters in aerial wartime images
Creators: name: Kruse, C.
name: Rottensteiner, F.
name: Heipke, C.
Publisher: name: Göttingen : Copernicus
Year: 2019
Subjects: subject: Aerial Wartime Images
subject: Bomb Craters
subject: Marked Point Processes
subject: RJMCMC
subject: Simulated Annealing
subject: Antennas
subject: Bombs (ordnance)
subject: Markov processes
subject: Military operations
subject: Military photography
subject: Monte Carlo methods
subject: Simulated annealing
subject: Stochastic systems
subject: Automated detection
subject: Automatic Generation
subject: Kernel Density Estimation
subject: Marked point process
subject: Probabilistic framework
subject: Reversible jump Markov chain Monte Carlo
subject: Stochastic approach
subject: Image processing
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften

description: Many countries were the target of air strikes during the Second World War. The aftermath of such attacks is felt until today, as numerous unexploded bombs or duds still exist in the ground. Typically, such areas are documented in so-called impact maps, which are based on detected bomb craters. This paper proposes a stochastic approach to automatically detect bomb craters in aerial wartime images that were taken during World War II. In this work, one aspect we investigate is the type of object model for the crater: we compare circles with ellipses. The respective models are embedded in the probabilistic framework of marked point processes. By means of stochastic sampling the most likely configuration of objects within the scene is determined. Each configuration is evaluated using an energy function which describes the conformity with a predefined model. High gradient magnitudes along the border of the object are favoured and overlapping objects are penalized. In addition, a term that requires the grey values inside the object to be homogeneous is investigated. Reversible Jump Markov Chain Monte Carlo sampling in combination with simulated annealing provides the global optimum of the energy function. Afterwards, a probability map is generated from the automatic detections via kernel density estimation. By setting a threshold, areas around the detections are classified as contaminated or uncontaminated sites, respectively, which results in an impact map. Our results, based on 22 aerial wartime images, show the general potential of the method for the automated detection of bomb craters and the subsequent automatic generation of an impact map. © Authors 2019.
Entwicklung eines Messaufbaus zur Charakterisierung der WPT-Systemkomponenten nach CISPR 25 und CISPR 11
Creators: name: Ziegler, Christof
name: Beck, Fabian
Publisher: name: Aachen : Apprimus
Year: 2016
Subjects: subject: Messung
subject: WPT-Systeme
subject: CISPR
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Das Laden mittels drahtloser Energieübertragung (wireless power transfer, WPT) findet in immer mehr Mobilgeräten wie Smartphones Anwendung. Der Komfort, das Gerät durch einfaches Ablegen auf den Tisch laden zu können, hat ein großes Marktpotenzial. Aus diesem Grund rüsten die meisten Smartphone-Hersteller ihre neuen Geräte mit dieser Technik aus. Die Technologie des WPT soll nun auf die Anwendung im Elektrofahrzeug übertragen werden. Dabei wird die vermeintlich einfache Bedienung des Ladevorgangs als eine der möglichen Schlüsseltechnologien gesehen, um den Elektrofahrzeugen zum Durchbruch zu verhelfen. Die Idee, das Fahrzeug durch einfaches überfahren einer Ladeplatte zu laden, ohne ein Ladekabel mit komplexem Stecker bedienen zu müssen, bietet einen bislang nicht da gewesenen Komfortgewinn für den Anwender. Allerdings ist die ungestörte Koexistenz des Systems mit den am Fahrzeug vorhandenen Systemen, z. B. dem schlüssellosen Komfortzugang (PEPS), für die Akzeptanz des Anwenders notwendig. Der elektromagnetischen Verträglichkeit (EMV), d. h. der Einhaltung der geforderten Grenzwerte für Störemission, kommt daher eine ebenso zentrale Rolle zu, wie der Diskussion der energetischen Effizienz. Die Energie wird im WPT-System über die Distanz von einigen Zentimetern drahtlos von der Ladestation zum Fahrzeug übertragen. Die dabei auftretenden Streufelder beeinflussen die Umgebung. Daher ist die Messung der auftretenden Feldstärken und Störspektren im Umfeld dieser WPT-Ladestationen essentiell für die Bewertung des Systems gemäß den Grenzwerten für elektromagnetische Felder (EMF) und der EMV. Durch den offenen Aufbau der Koppelstrecke bietet das System eine große Anzahl an Variationsmöglichkeiten in der Konfiguration, z.B. durch den räumlichen Versatz des Fahrzeugs zur Bodeneinheit. Dies bedingt die Definition eines einheitlichen Messaufbaus, um vergleichbare Messergebnisse zu erhalten. In diesem Artikel werden die typischen System-Konfigurationen und Variablen eines WPT-Systems für die Anwendung in Elektrofahrzeugen in einer übersicht zusammengefasst. Die Angaben beruhen dabei auf den Normentwürfen des IEC 61980 und des SAE J2954. Für die EMV-Charakterisierung der WPTKomponenten wird ein Aufbau für Messung der Störspannung (CE) und der abgestrahlten Störfeldstärke (RE) erläutert, welcher die Anforderungen der CISPR 11 und der CISPR 25 berücksichtigt. Anhand von Messungen werden die Einflüsse typischer Variationen im WPT-System auf die EMV-Ergebnisse diskutiert.
Emission Rates, Size Distributions, and Generation Mechanism of Oral Respiratory Droplets
Creators: name: Harrison, Joshua
name: Saccente-Kennedy, Brian
name: Orton, Christopher M.
name: McCarthy, Lauren P.
name: Archer, Justice
name: Symons, Henry E.
name: Szczepanska, Alicja
name: Watson, Natalie A.
name: Browne, William J.
name: Moseley, Benjamin
name: Philip, Keir E. J.
name: Hull, James H.
name: Calder, James D.
name: Costello, Declan
name: Shah, Pallav L.
name: Epstein, Ruth
name: Reid, Jonathan P.
name: Bzdek, Bryan R.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 20199 Astronomical and Space Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic has brought renewed attention to respiratory aerosol and droplet generation. While many studies have robustly quantified aerosol (<10 µm diameter) number and mass exhalation rates, fewer studies have explored larger droplet generation. This study quantifies respiratory droplets (>20 µm diameter) generated by a cohort of 76 adults and children using a water-sensitive paper droplet deposition approach. Unvoiced and voiced activities spanning different levels of loudness, different lengths of sustained phonation, and a specific manner of articulation in isolation were investigated. We find that oral articulation drives >20 µm droplet generation, with breathing generating virtually no droplets and speaking and singing generating on the order of 250 droplets min−1. Lip trilling, which requires extensive oral articulation, generated the most droplets, whereas shouting “Hey”, which requires minimal oral articulation, generated relatively few droplets. Droplet size distributions were all broadly consistent, and no significant differences between the children and adult cohorts were identified. By comparing the aerosol and droplet emissions for the same participants, the full size distribution of respiratory aerosol (0.5-1000 µm) is reported. Although <10 µm aerosol dominates the number concentration, >20 µm droplets dominate the mass concentration. Accurate quantification of aerosol concentrations in the 10-70 μm size range remains very challenging; more robust aerosol analysis approaches are needed to characterize this size range.
Evolution of variable range hopping in strongly localized two dimensional electron gas at NdAlO3/SrTiO3 (100) heterointerfaces
Creators: name: Annadi, A.
name: Putra, A.
name: Srivastava, A.
name: Wang, X.
name: Huang, Z.
name: Liu, Z. Q.
name: Venkatesan, T.
name: Ariando
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report evolution of the two-dimensional electron gas behavior at the NdAlO3/SrTiO3 heterointerfaces with varying thicknesses of the NdAlO3 overlayer. The samples with a thicker NdAlO3 show strong localizations at low temperatures and the degree of localization is found to increase with the NdAlO3 thickness. The T -1/3 temperature dependence of the sheet resistance at low temperatures and the magnetoresistance study reveal that the conduction is governed by a two-dimensional variable range hopping mechanism in this strong localized regime. We attribute this thickness dependence of the transport properties of the NdAlO3/SrTiO3 interfaces to the interface strain induced by the overlayers.
description: 15 pages, 4 figures
SND Strategic Plan 2018–2022
Creators: name: Swedish National Data Service
Publisher: name: Zenodo
Year: 2019
Subjects: policy
strategic plan
Swedish National Data Service
SND
research data
research infrastructure
repository
data management
data sharing
open access
open science
metadata
strategy
vision
Swedish universities

description: The focus of the Swedish National Data Service Strategic Plan 2018-2022 is to declare our vision and describe the strategic objectives of the national research infrastructure. The strategic plan consists of two parts:

The vision with a short description of the mission and the overall purpose of the infrastructure.

The three overarching strategic areas with specified aims:

Facilitate and Secure Research Data and Metadata Flows

Assist and Benefit Users

Accumulate and Maintain Expertise.
description: Funded by the Swedish Research Council.
Blending chitosan-g-poly(caprolactone) with poly(caprolactone) by electrospinning to produce functional fiber mats for tissue engineering applications
Creators: name: De Cassan, D.
name: Becker, A.
name: Glasmacher, B.
name: Roger, Y.
name: Hoffmann, A.
name: Gengenbach, T.R.
name: Easton, C.D.
name: Hänsch, R.
name: Menzel, H.
Publisher: name: Chichester : John Wiley and Sons Ltd
Year: 2019
Subjects: subject: Blend
subject: cell compatibility
subject: chitosan
subject: electrospinning
subject: polycaprolacton
subject: surface enrichment
subject: X-ray photoelectron spectroscopy
subject: Biomechanics
subject: Blending
subject: Chitosan
subject: Crystallinity
subject: Electrospinning
subject: Fibers
subject: Photoelectrons
subject: Photons
subject: Polymeric implants
subject: Scanning electron microscopy
subject: Tissue
subject: X ray photoelectron spectroscopy
subject: Biological performance
subject: Cell compatibility
subject: Cellular attachments
subject: Confocal laser scanning microscopy
subject: Poly (epsiloncaprolactone)
subject: Surface enrichment
subject: Tissue engineering applications
subject: Tissue engineering
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Use of electrospun fiber mats for tissue engineering applications has become increasingly prominent. One of the most important polymers in research, poly(ε-caprolactone) (PCL), however, lacks biological performance, easy access to modifications and cellular recognition sites. To improve these properties and to enable further modifications, PCL was blended with chitosan grafted with PCL (CS-g-PCL) and subsequently processed via electrospinning. In this way, chitosan was enriched at the fiber's surface presenting cationic amino groups. The fiber mats were analyzed by various techniques such as scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), and X-ray photoelectron spectroscopy (XPS). Furthermore, analyzing thermal properties and crystallinity, showed that an increased content of CS-g-PCL in blend composition leads to a higher overall crystallinity in produced fiber mats. Blending CS-g-PCL into PCL significantly increased initial cellular attachment and proliferation as well as cell vitality, while maintaining adequate mechanical properties, fiber diameter, and interstitial volume. As proof of principle for easy access to further modification, fluorescently labeled alginate (Alg-FA) was attached to the fiber's surface and verified by CLSM. Hence, blending CS-g-PCL with PCL can overcome an inherent weakness of PCL and create bioactive implants for tissue engineering applications. © 2019 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48650. © 2019 The Authors. Journal of Applied Polymer Science published by Wiley Periodicals, Inc.
Dynamical transport properties of NbSe$_3$ with simultaneous sliding of both charge density waves
Creators: name: Sinchenko, A. A.
name: Monceau, P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Measurements of the nonlinear conductivity in NbSe$_3$ when the high-T and the low-T charge-density waves (CDWs) are simultaneously sliding have been performed. It is shown that the threshold electric field, $E_{t1}$, for depinning the high-T CDW increases 4 - 5 times at the temperature at which the low-T CDW is formed, indicating the strong pinning effect resulting from the interaction between both CDWs. Under application of a radio-frequency (rf) field, Shapiro steps are never observed simultaneously for both CDWs. At the electric field less then one for high-T CDW sliding only Sapiro steps for low-T CDW were observed, and at higher field only Shapiro steps for high-T CDW exist.
description: 5 pages, 6 figures, accepted in PRB
title: Solid Molecular Frustrated Lewis Pairs in a Polyamine Organic Framework for the Catalytic Metal‐free Hydrogenation of Alkenes
Creators: name: Willms, Andrea
name: Schumacher, Hannah
name: Tabassum, Tarnuma
name: Qi, Long
name: Scott, Susannah L.
name: Hausoul, Peter J. C.
name: Rose, Marcus
Publisher: name: Wiley
Year: 2023

description: We report for the first time a metal-free heterogeneously catalyzed hydrogenation using a semi-solid frustrated Lewis pair (FLP). The catalyst consists of a solid polyamine organic framework and molecular tris(pentafluorophenyl)borane (BCF) that form a semi-immobilized FLP in situ in the catalytic hydrogenation of diethyl benzylidenemalonate. 11B NMR spectroscopy proves the successful hydrogen activation by the FLP. Furthermore, the B−N interactions between the polyamine and BCF are investigated by IR and solid state NMR spectroscopy. The FLP 1,4-diazabicyclo[2.2.2]octane (DABCO)/BCF, which combines the features of a FLP and a classical Lewis adduct, functions as molecular reference in both, catalysis and characterization. Furthermore, computational studies enable a better insight into the hydrogen activation through DABCO/BCF and polyamine/BCF.
Analysing the Transverse Structure of the Relativistic Jets of AGN
Creators: name: Murphy, E. G.
name: Cawthorne, T. V.
name: Gabuzda, D. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This paper describes a method of fitting total intensity and polarization profiles in VLBI images of astrophysical jets to profiles predicted by a theoretical model. As an example, the method is used to fit profiles of the jet in the Active Galactic Nucleus Mrk501 with profiles predicted by a model in which a cylindrical jet of synchrotron plasma is threaded by a magnetic field with helical and disordered components. This fitting yields model Stokes Q profiles that agree with the observed profiles to within the 1-2 σuncertainties; the I model and observed profiles are overall not in such good agreement, with the model I profiles being generally more symmetrical than the observed profiles. Consistent fitting results are obtained for profiles derived from 6cm VLBI images at two distances from the core, and also for profiles obtained for different wavelengths at a single location in the VLBI jet. The most striking success of the model is its ability to reproduce the spine-sheath polarization structure observed across the jet. Using the derived viewing angle in the jet rest frame, δ' approximately 83 degrees, together with a superluminal speed reported in the literature, βapparent = 3.3, yields a solution for the viewing angle and velocity of the jet in the observer's frame δdegrees and βapproximately 0.96. Although these results for Mrk501 must be considered tentative, the combined analysis of polarization profiles and apparent component speeds holds promise as a means of further elucidating the magnetic field structures and other parameters of parsec-scale AGN jets.
description: Accepted for publication by MNRAS
CULTURAL HERITAGE AND ITS PRESERVATION IN THE MODERN WORLD
Creators: name: Sagidanova, Asemay
Publisher: name: Zenodo
Year: 2024

description: Cultural heritage, comprising both tangible and intangible elements, serves as a vital pillar of identity, community cohesion, and historical continuity. In the modern world, however, this heritage faces significant threats from rapid urbanization, globalization, climate change, and armed conflict, which risk diluting cultural diversity and eroding community ties. This article explores the multifaceted importance of cultural heritage, highlighting its economic, social, and educational benefits while examining the contemporary challenges that hinder its preservation.
Trends in Combating Image Spam E-mails
Creators: name: Khanum, Mohammadi Akheela
name: Ketari, Lamia Mohammed
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: With the rapid adoption of Internet as an easy way to communicate, the amount of unsolicited e-mails, known as spam e-mails, has been growing rapidly. The major problem of spam e-mails is the loss of productivity and a drain on IT resources. Today, we receive spam more rapidly than the legitimate e-mails. Initially, spam e-mails contained only textual messages which were easily detected by the text-based spam filters. To evade such detection, spammers came up with a new sophisticated technique called image spam. Image spam consists in embedding the advertisement text in images rather than in the body of the e-mail, yet the image contents are not detected by most spam filters. In this paper, we examine the motivations and the challenges in image spam filtering research, and we review the recent trends in combating image spam e-mails. The review indicates that spamming is a business model and spammers are becoming more sophisticated in their approach to adapt to all challenges, and hence, defeating the conventional spam filtering technologies. Therefore, image spam detection techniques should be scalable and adaptable to meet the future tactics of the spammers.
title: All You Ever Wanted to Know About Natural Wines
Creators: name: Cawley, Diarmuid
Publisher: name: Technological University of Dublin
Year: 2018

description: Natural wines have been growing in popularity for the last decade. They are made in a pared-back manner with minimal intervention, indigenous yeasts or without the use of chemicals in the vineyard.

They taste, smell and look different from conventional wines and the movement that has sprung up around them has a rebellious nature yet sits alongside other trends like craft beer and single origin chocolate and coffee.

This piece discusses what they are about and whether they are a passing trend.
Phänomenologische Modellbildung des gasseitigen Wandwärmeüberganges in Dieselmotoren
Creators: name: Eiglmeier, Christian
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Wall heat transfer
subject: diesel engine
subject: simulation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
The refractive index in the viscous quark-gluon plasma
Creators: name: Jiang, Bing-feng
name: Hou, De-fu
name: Li, Jia-rong
name: Gao, Yan-Jun
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Under the framework of the viscous chromohydrodynamics, the gluon self-energy is derived for the quark-gluon plasma with shear viscosity. The viscous electric permittivity and magnetic permeability are evaluated from the gluon self-energy, through which the refraction index %in the %viscous quark-gluon plasma is investigated. The numerical analysis indicates that the refractive index becomes negative in some frequency range. The start point for that frequency range is around the electric permittivity pole, and the magnetic permeability pole determines the end point. As the increase of $η/s$, the frequency range for the negative refraction becomes wider.
description: 8 pages, 5 figues, in revtex
EKSKLYUZIV HUQUQLARNI BARTARAF ETISHDA INKLYUZIV IQTISODIY USULLARNI QO'LLASH
Creators: name: Zaripov, Shoxboz
Publisher: name: Zenodo
Year: 2024

description: Eksklyuziv huquqlar kontseptsiyasi jismoniy shaxslar va korporatsiyalarga resurslar, bozorlar va intellektual mulkni nazorat qilish va monopoliya qilish imkoniyatini beruvchi zamonaviy iqtisodiyotlarning asosi bo'lib kelgan. Biroq, ushbu huquqlar beradigan eksklyuzivlik imkoniyatlardan foydalanishni cheklashi, innovatsiyalarga to'sqinlik qilishi va ijtimoiy va iqtisodiy tengsizliklarni kuchaytirishi mumkin. So'nggi yillarda umumiy farovonlik, ijtimoiy adolat va ekologik barqarorlikni ta'minlaydigan yanada inklyuziv iqtisodiy modellarga o'tish zarurati tobora ortib bormoqda. Ushbu maqolada inklyuziv iqtisodiy usullarni qo'llash mutlaq huquqlarni bekor qilishda, yanada adolatli va barqaror iqtisodiy tizimni rivojlantirishda hal qiluvchi rol o'ynashi mumkinligi ta'kidlanadi.
title: What Science Fiction Tells us About the Future of Food
Creators: name: Cawley, Diarmuid
Publisher: name: Technological University of Dublin
Year: 2018

description: The science fiction genre has always been a hotbed for questions about the existence of life and what it means to be human. Food is necessary to sustain life, but is also a key indicator of culture. One of the things that fascinates us about science fiction is how an imagined future culture might look. Food, like fashion, music, transport or architecture plays a role, usually a functional one, in building the scenes needed for us to understand and relate to the narrative.
The black disk and the dip in the differential elastic cross section at asymptotic energy
Creators: name: Bautista, I.
name: de Deus, J. Dias
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We test the validity of the black disk limit in elastic scattering by studying the evolution of the dip in the scaling variable $τ=-t_{D}σ^{tot}$, where $t_{D}$ is the transverse momentum squared at the dip and $σ_{tot}$ the total cross section. As $s\rightarrow \infty $ and $-t_{D} \rightarrow 0 $, $τ$ may consistently be approaching the black disc value, $τ\xrightarrow[ \sqrt{s}\rightarrow \infty ]{} τ_{BD}=35.92$ GeV$^{2}$ mb.
description: 6 pages, 2 figures
Analyse der Substratbindungsstellen des P-Glykoproteins
Creators: name: Isenberg, Bärbel
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: p-glycoprotein
subject: ABC-transporter
subject: multidrug resistance (MDR)
subject: iodoarylacidoprazosin
subject: photo-binding sites
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
On pseudocompact topological Brandt $λ^0$-extensions of semitopological monoids
Creators: name: Gutik, O.
name: Pavlyk, K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 22A15, 54H15

description: In the paper we investigate topological properties of a topological Brandt $λ^0$-extension $B^0_λ(S)$ of a semitopological monoid $S$ with zero. In particular we prove that for every Tychonoff pseudocompact (resp., Hausdorff countably compact, Hausdorff compact) semitopological monoid $S$ with zero there exists a unique semiregular pseudocompact (resp., Hausdorff countably compact, Hausdorff compact) extension $B^0_λ(S)$ of $S$ and establish theirs Stone-Čech and Bohr compactifications. We also describe a category whose objects are ingredients in the constructions of pseudocompact (resp., countably compact, sequentially compact, compact) topological Brandt $λ^0$-extensions of pseudocompact (resp., countably compact, sequentially compact, compact) semitopological monoids with zeros.
Beitrag zur Bestimmung des Werkzeugverschleißes beim Plasmaschmelzschneiden
Creators: name: Hüske, Marc
Publisher: name: Hannover : Universität
Year: 2001
Subjects: subject: Plasma arc cutting
subject: laser measuring technology
subject: speckle effect
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: [no abstract]
Pollination ecology and evolution of Epacrids
Creators: name: Johnson, KA
Publisher: name: University Of Tasmania
Year: 2023

description: Relationships between plants and their pollinators are thought to have played a major role in the morphological diversification of angiosperms. The epacrids (subfamily Styphelioideae) comprise more than 550 species of woody plants ranging from small prostrate shrubs to temperate rainforest emergents. Their range extends from SE Asia through Oceania to Tierra del Fuego with their highest diversity in Australia. The overall aim of the thesis is to determine the relationships between epacrid floral features and potential pollinators, and assess the evolutionary status of any pollination syndromes. The main hypotheses were that flower characteristics relate to pollinators in predictable ways; and that there is convergent evolution in the development of pollination syndromes. Four case-studies obtained information on specific epacrid-pollinator relationships using a combination of field observation, breeding systems experiments, and comparative phylogenetics. A further study develops a molecular phylogeny for the 38 recognised genera of the epacrids, and the final study places the ecological pollination research into this evolutionary context. Epacrid floral traits were related to bird, bee, and fly pollination systems. Bird pollination occurs in the most basal tribe, but insect pollination is also predicted for this tribe. Fly and bee pollination are widely supported by epacrid flowers, while red flowers and long floral tubes are the most important predictors for those visited by birds. Insect pollination is widespread across the evolutionary tree, but bird pollination coincides largely with the convergent evolution of red flowers. Purple, green, yellow, and nectarless flowers are distributed across the tree, also consistent with a hypothesis of convergent evolution. Nectarless flowers tend to be associated with wind or buzz pollination. Nocturnal mammals and lizards forage on epacrids but their role in pollination remains uncertain. Overall, the data suggest that pollinators have played a major role in the morphological diversification of the epacrids.