cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluation of Hydrogen Sulfide Scrubbing Systems for Anaerobic Digesters on Two U.S. Dairy Farms
Creators: name: Choudhury, Abhinav
name: Shelford, Timothy
name: Felton, Gary
name: Gooch, Curt
name: Lansing, Stephanie
Publisher: name: MDPI
Year: 2019
Subjects: micro-aeration
biogas
bioenergy
iron
H2S scrubber

description: Hydrogen sulfide (H2S) is a corrosive trace gas present in biogas produced from anaerobic digestion systems that should be removed to reduce engine-generator set maintenance costs. This study was conducted to provide a more complete understanding of two H2S scrubbers in terms of efficiency, operational and maintenance parameters, capital and operational costs, and the effect of scrubber management on sustained H2S reduction potential. For this work, biogas H2S, CO2, O2, and CH4 concentrations were quantified for two existing H2S scrubbing systems (iron-oxide scrubber, and biological oxidation using air injection) located on two rural dairy farms. In the micro-aerated digester, the variability in biogas H2S concentration (average: 1938 ± 65 ppm) correlated with the O2 concentration (average: 0.030 ± 0.004%). For the iron-oxide scrubber, there was no significant difference in the H2S concentrations in the pre-scrubbed (450 ± 42 ppm) and post-scrubbed (430 ± 41 ppm) biogas due to the use of scrap iron and steel wool instead of proprietary iron oxide-based adsorbents often used for biogas desulfurization. Even though the capital and operating costs for the two scrubbing systems were low (<$1500/year), the lack of dedicated operators led to inefficient performance for the two scrubbing systems.
Cusp Kernels for Velocity-Changing Collisions
Creators: name: McGuyer, B. H.
name: Marsland, R.
name: Olsen, B. A.
name: Happer, W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We introduce an analytical kernel, the "cusp" kernel, to model the effects of velocity-changing collisions on optically pumped atoms in low-pressure buffer gases. Like the widely used Keilson-Storer kernel [J. Keilson and J. E. Storer, Q. Appl. Math. 10, 243 (1952)], cusp kernels are characterized by a single parameter and preserve a Maxwellian velocity distribution. Cusp kernels and their superpositions are more useful than Keilson-Storer kernels, because they are more similar to real kernels inferred from measurements or theory and are easier to invert to find steady-state velocity distributions.
description: 4 pages, 2 figures
Supplementary document for Evaluation of a coherent 2-μm differential absorption lidar for water vapor and radial wind velocity measurements - 6246452.pdf
Creators: name: Iwai, Hironori
name: Aoki, Makoto
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Overview of H2O-DIAL validation cases obtained with radiosondes launched at NICT.
A control system for ultrasound devices utilized for inactivating E. coli in wastewater
Creators: name: Ohrdes, H.
name: Ille, I.
name: Twiefel, J.
name: Wallaschek, J.
name: Nogueira, R.
name: Rosenwinkel, K.-H.
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2018
Subjects: subject: pulsed ultrasound
subject: wastewater treatment
subject: E. coli inactivation
subject: control system
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: Sonochemical processes applied to wastewater treatment have an influence on the behavior of ultrasonic systems. This is especially due to the load characteristic of the sonochemical process itself and the temperature increase caused by internal damping within the converter. Hence, a controlling device is needed to guarantee the operation in resonance and to keep the vibration amplitude constant. This paper presents a digital control system for the operation of weak to strong damped ultrasonic devices and its application for inactivating Escherichia coli in wastewater. In an experimental investigation, the electric data during a sonochemical process to inactivate E. coli in wastewater is taken into account to analyze the efficacy of the treatment process and the reaction of the vibration system to the process. Frequency response measurements depict that the resonance frequency changes with the sonicated medium and the vibration amplitude decreases with driving current. In addition to a common continuous operation of the system, different pulsed modes are investigated. The experiments prove the common dependencies between inactivation and power level or treatment time. Additionally, it is pointed out that the control of the sonochemical device is of utmost importance to guarantee an efficient treatment of water, because fast process changes, especially in pulsed operation modes, need to be controlled to a steady state as fast as possible. Although a water treatment efficiency increase using pulsed modes was not proved, it is shown, that the performance of the control unit is capable of using different driving modes in water treatment.
Methane and Hydrogen Sulfide Production from Co-Digestion of Gummy Waste with a Food Waste, Grease Waste, and Dairy Manure Mixture
Creators: name: Lansing, Stephanie
name: Choudhury, Abhinav
Publisher: name: MDPI
Year: 2019
Subjects: biochemical methane potential
biogas
anaerobic digestion

description: Co-digestion of dairy manure with waste organic substrates has been shown to increase the methane (CH4) yield of farm-scale anaerobic digestion (AD). A gummy vitamin waste (GVW) product was evaluated as an AD co-digestion substrate using batch AD testing. The GVW product was added at four inclusion levels (0%, 5%, 9%, and 23% on a wet mass basis) to a co-digestion substrate mixture of dairy manure (DM), food-waste (FW), and grease-waste (GW) and compared to mono-digestion of the GVW, DM, FW, and GW substrates. All GVW co-digestion treatments significantly increased CH4 yield by 126–151% (336–374 mL CH4/g volatile solids (VS)) compared to DM-only treatment (149 mL CH4/g VS). The GVW co-digestion treatments also significantly decreased the hydrogen sulfide (H2S) content in the biogas by 66–83% (35.1–71.9 mL H2S/kg VS) compared to DM-only (212 mL H2S/kg VS) due to the low sulfur (S) content in GVW waste. The study showed that GVW is a potentially valuable co-digestion substrate for dairy manure. The high density of VS and low moisture and S content of GVW resulted in higher CH4 yields and lower H2S concentrations, which could be economically beneficial for dairy farmers.
Letter of attestation from Dilowa Hutukhtu regarding Reverend Lundukhdamba Jamco Namjil Dorje, original handwritten letter
Creators: name: Zhamsranzhav, B., Dilav Khutagt, 1884-1965
Publisher: name: Columbia University
Year: 2020
Subjects: Mongols
Lamas

description: Letter from Dilowa Hutkhtu attesting that Jamco Namjil accompanied him in 1939 when leaving Inner Mongolia for Tibet-- English typewritten translation
Quantum Dynamics in Classical Spin Baths
Creators: name: Sergi, Alessandro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A formalism for studying the dynamics of quantum systems embedded in classical spin baths is introduced. The theory is based on generalized antisymmetric brackets and predicts the presence of open-path off-diagonal geometric phases in the evolution of the density matrix. The weak coupling limit of the equation can be integrated by standard algorithms and provides a non-Markovian approach to the computer simulation of quantum systems in classical spin environments. It is expected that the theory and numerical schemes presented here have a wide applicability.
description: Accepted as a Communication in The Journal of Chemical Physics
Two-phase flow patterns in adiabatic and diabatic corrugated plate gaps
Creators: name: Polzin, A.-E.
name: Kabelac, S.
name: De Vries, B.
Publisher: name: Bristol : IOP Publ.
Year: 2016
Subjects: subject: two-phase heat transfer
subject: plate heat exchangers
subject: plate geometries
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Correlations for two-phase heat transfer and pressure drop can be improved considerably, when they are adapted to specific flow patterns. As plate heat exchangers find increasing application as evaporators and condensers, there is a need for flow pattern maps for corrugated plate gaps. This contribution presents experimental results on flow pattern investigations for such a plate heat exchanger background, using an adiabatic visualisation setup as well as a diabatic setup.Three characteristic flow patterns were observed in the considered range of two-phase flow: bubbly flow, film flow and slug flow. The occurrence of these flow patterns is a function of mass flux, void fraction, fluid properties and plate geometry. Two different plate geometries having a corrugation angle of 27° and 63°, respectively and two different fluids (water/air and R365mfc liquid/vapor) have been analysed. A flow pattern map using the momentum flux is presented.
The Capsid Protein of Hepatitis E Virus Inhibits Interferon Induction via Its N-Terminal Arginine-Rich Motif
Creators: name: Lin, Shaoli
name: Yang, Yonglin
name: Nan, Yuchen
name: Ma, Zexu
name: Yang, Liping
name: Zhang, Yan-Jin
Publisher: name: MDPI
Year: 2019
Subjects: Hepatitis E virus (HEV)
interferon (IFN)
the capsid protein
arginine-rich motif
IRF3 phosphorylation

description: Hepatitis E virus (HEV) causes predominantly acute and self-limiting hepatitis. However, in HEV-infected pregnant women, the case fatality rate because of fulminant hepatitis can be up to 30%. HEV infection is zoonotic for some genotypes. The HEV genome contains three open reading frames: ORF1 encodes the non-structural polyprotein involved in viral RNA replication; ORF2 encodes the capsid protein; ORF3 encodes a small multifunctional protein. Interferons (IFNs) play a significant role in the early stage of the host antiviral response. In this study, we discovered that the capsid protein antagonizes IFN induction. Mechanistically, the capsid protein blocked the phosphorylation of IFN regulatory factor 3 (IRF3) via interaction with the multiprotein complex consisting of mitochondrial antiviral-signaling protein (MAVS), TANK-binding kinase 1 (TBK1), and IRF3. The N-terminal domain of the capsid protein was found to be responsible for the inhibition of IRF3 activation. Further study showed that the arginine-rich-motif in the N-terminal domain is indispensable for the inhibition as mutations of any of the arginine residues abolished the blockage of IRF3 phosphorylation. These results provide further insight into HEV interference with the host innate immunity.
Quantum simulations of localization effects with dipolar interactions
Creators: name: Alvarez, Gonzalo A.
name: Kaiser, Robin
name: Suter, Dieter
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Quantum information processing often uses systems with dipolar interactions. We use a nuclear spin-based quantum simulator, to study the spreading of information in such a dipolar-coupled system and how perturbations to the dipolar couplings limit the spreading, leading to localization. In [Phys. Rev. Lett. 104, 230403 (2010)], we found that the system reaches a dynamic equilibrium size, which decreases with the square of the perturbation strength. Here, we study the impact of a disordered Hamiltonian with dipolar 1/r^3 interactions. We show that the expansion of the coherence length of the cluster size of the spins becomes frozen in the presence of large disorder, reminiscent of Anderson localization of non-interacting waves in a disordered potential.
description: 10 pages, 12 figures
Evaluation of Five Satellite Top-of-Atmosphere Albedo Products over Land
Creators: name: Zhan, Chuan
name: Allan, Richard P.
name: Liang, Shunlin
name: Wang, Dongdong
name: Song, Zhen
Publisher: name: MDPI
Year: 2019
Subjects: TOA albedo
evaluation
TAL-AVHRR
TAL-MODIS
CERES
CM SAF
DEEP-C

description: Five satellite top-of-atmosphere (TOA) albedo products over land were evaluated in this study including global products from the Advanced Very High Resolution Radiometer (AVHRR) (TAL-AVHRR), Moderate Resolution Imaging Spectroradiometer (MODIS) (TAL-MODIS), and Clouds and the Earth’s Radiant Energy System (CERES); one regional product from the Climate Monitoring Satellite Application Facility (CM SAF); and one harmonized product termed Diagnosing Earth’s Energy Pathways in the Climate system (DEEP-C). Results showed that overall, there is good consistency among these five products, particularly after the year 2000. The differences among these products in the high-latitude regions were relatively larger. The percentage differences among TAL-AVHRR, TAL-MODIS, and CERES were generally less than 20%, while the differences between TAL-AVHRR and DEEP-C before 2000 were much larger. Except for the obvious decrease in the differences after 2000, the differences did not show significant changes over time, but varied among different regions. The differences between TAL-AVHRR and the other products were relatively large in the high-latitude regions of North America, Asia, and the Maritime Continent, while the differences between DEEP-C and CM SAF in Europe and Africa were smaller. Interannual variability was consistent between products after 2000, before which the differences among the three products were much larger.
Compatibility aspects of the method of phase synchronization for decoupling linear second-order differential equations
Creators: name: Sarlet, W.
name: Mestdag, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The so-called method of phase synchronization has been advocated in a number of papers as a way of decoupling a system of linear second-order differential equations by a linear transformation of coordinates and velocities. This is a rather unusual approach because velocity-dependent transformations in general do not preserve the second-order character of differential equations. Moreover, at least in the case of linear transformations, such a velocity-dependent one defines by itself a second-order system, which need not have anything to do, in principle, with the given system or its reformulation. This aspect, and the related questions of compatibility it raises, seem to have been overlooked in the existing literature. The purpose of this paper is to clarify this issue and to suggest topics for further research in conjunction with the general theory of decoupling in a differential geometric context.
description: 17 pages, to appear in J Geometric Mechanics
Bestimmung von Messunsicherheiten von Tischen und Masten nach CISPR 16-1-4
Creators: name: Riedelsheimer, Jochen
name: Trautnitz, Friedrich-Wilhelm
name: Woerl, Bernd
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: vertikale Polarisation
subject: Fehlerabschätzung
subject: Messunsicherheit
subject: Frequenzbereich
subject: Empfangsantenne
subject: Störquelle
subject: Strahlungscharakteristik
subject: Messergebnis
subject: Signalpegel
subject: Hornantenne
subject: Ringvergleich
subject: Richtwirkung
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: Die Untersuchung verschiedener Prüftische hat gezeigt, dass der angenommene Schätzwert der Messunsicherheit nach CISPR 16-4-2 erreicht werden kann, eine individuelle Bestimmung der Unsicherheit ist jedoch zu empfehlen. Bzgl. der Beeinflussung der Messergebnisse durch Kopplungen zum Mastsystem ist eine Analyse, ähnlich der bei Prüftischen zu empfehlen, da sich dieser Einflussfaktor nicht zwingend und in entsprechender Weise in der Abweichung der NSA zeigt. Die Untersuchungen zur Neigung der Antenne im Frequenzbereich 30 - 1000 MHz hat gezeigt, dass die Einstufung der Schätzwerte ohne Neigung in vertikaler Polarisation im Frequenzbereich 130 - 200 MHz etwas zu gering ausfallen, dagegen im Bereich >200 MHz tendenziell überbewertet sind. Die Messung mit mehreren Sendepositionen innerhalb des Volumens zeigt eine nahezu ähnliche maximale Pegelerhöhung, wie die Messung in Volumenmitte. Somit ist auch bei einer Veränderung der Störquelle im Volumen eine realistische Fehlerabschätzung gewährleistet. Durch den Einfluss der Strahlungscharakteristik der Antenne ist unter Umständen sogar eine Pegelverminderung bei Neigung möglich. Bei Messungen oberhalb 1 GHz ist eine signifikante Zunahme der Messpegel insbesondere durch den Höhenscan der Empfangsantenne zu beobachten. Eine deutliche Zunahme des Signalpegels durch eine zusätzliche Neigung der Antenne ist trotz der stärkeren Richtwirkung der Hornantenne nicht eindeutig zu beobachten. Ein Ringvergleich unter den akkreditierten EMV Laboren zur Messunsicherheit oberhalb 1 GHz, ähnlich dem im Jahre 2002 präsentierten Ringvergleich, könnte hier weiterführende Informationen liefern.
Closed loop cavitation control : A step towards sonomechatronics
Creators: name: Saalbach, Kai-Alexander
name: Ohrdes, Hendik
name: Twiefel, Jens
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2018
Subjects: subject: cavitation
subject: sonochemistry
subject: closed loop control
subject: closed loop cavitation control
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: In the field of sonochemistry, many processes are made possible by the generation of cavitation. This article is about closed loop control of ultrasound assisted processes with the aim of controlling the intensity of cavitation-based sonochemical processes. This is the basis for a new research field which the authors call “sonomechatronics”. In order to apply closed loop control, a so called self-sensing technique is applied, which uses the ultrasound transducer’s electrical signals to gain information about cavitation activity. Experiments are conducted to find out if this self-sensing technique is capable of determining the state and intensity of acoustic cavitation. A distinct frequency component in the transducer’s current signal is found to be a good indicator for the onset and termination of transient cavitation. Measurements show that, depending on the boundary conditions, the onset and termination of transient cavitation occur at different thresholds, with the onset occurring at a higher value in most cases. This known hysteresis effect offers the additional possibility of achieving an energetic optimization by controlling cavitation generation. Using the cavitation indicator for the implementation of a double set point closed loop control, the mean driving current was reduced by approximately 15% compared to the value needed to exceed the transient cavitation threshold. The results presented show a great potential for the field of sonomechatronics. Nevertheless, further investigations are necessary in order to design application-specific sonomechatronic processes.
Uniform Inference in Panel Autoregression
Creators: name: Chao, John C.
name: Phillips, Peter C. B.
Publisher: name: MDPI
Year: 2019
Subjects: confidence interval
dynamic panel data models
panel IV
pooled OLS
uniform interference

description: This paper considers estimation and inference concerning the autoregressive coefficient (𝜌) in a panel autoregression for which the degree of persistence in the time dimension is unknown. Our main objective is to construct confidence intervals for 𝜌 that are asymptotically valid, having asymptotic coverage probability at least that of the nominal level uniformly over the parameter space. The starting point for our confidence procedure is the estimating equation of the Anderson–Hsiao (AH) IV procedure. It is well known that the AH IV estimation suffers from weak instrumentation when 𝜌 is near unity. But it is not so well known that AH IV estimation is still consistent when 𝜌=1. In fact, the AH estimating equation is very well-centered and is an unbiased estimating equation in the sense of Durbin (1960), a feature that is especially useful in confidence interval construction. We show that a properly normalized statistic based on the AH estimating equation, which we call the 𝕄 statistic, is uniformly convergent and can be inverted to obtain asymptotically valid interval estimates. To further improve the informativeness of our confidence procedure in the unit root and near unit root regions and to alleviate the problem that the AH procedure has greater variation in these regions, we use information from unit root pretesting to select among alternative confidence intervals. Two sequential tests are used to assess how close 𝜌 is to unity, and different intervals are applied depending on whether the test results indicate 𝜌 to be near or far away from unity. When 𝜌 is relatively close to unity, our procedure activates intervals whose width shrinks to zero at a faster rate than that of the confidence interval based on the 𝕄 statistic. Only when both of our unit root tests reject the null hypothesis does our procedure turn to the 𝕄 statistic interval, whose width has the optimal 𝑁−1/2𝑇−1/2 rate of shrinkage when the underlying process is stable. Our asymptotic analysis shows this pretest-based confidence procedure to have coverage probability that is at least the nominal level in large samples uniformly over the parameter space. Simulations confirm that the proposed interval estimation methods perform well in finite samples and are easy to implement in practice. A supplement to the paper provides an extensive set of new results on the asymptotic behavior of panel IV estimators in weak instrument settings.
Tibetan woman in Lhasa wearing apron and jewelry
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2020
Subjects: Tibetans
Women
Dress accessories

description: Photo of Karma Decchen (wife of Gegen Dorje Tharchin) at a younger age, or her younger sister, taken in front of altar in home in Lhasa, Tibet.
Erfahrungen beim Aufbau und der messtechnischen Charakterisierung der Dresdener Modenverwirbelungskammer
Creators: name: Pfennig Stephan
name: Krauthäuser, Hans Georg
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Lichtwellenleiterkomponente
subject: Dämpfungsmessung
subject: Mikrowellentechnik
subject: Mikrowellenmessverfahren
subject: Resonanzfrequenz
subject: Zeitverhalten
subject: Empfangsantenne
subject: Antennencharakteristik
subject: Feldinhomogenität
subject: elektrische Feldstärke
subject: Modenverwirbelungskammer
subject: Modenrührer
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: Der Lehrstuhl für Theoretische Elektrotechnik und Elektromagnetische Verträglichkeit der TU Dresden verfügt seit 2010 über eine Modenverwirbelungskammer (MVK) mit einem vertikalen Modenrührer und den Abmessungen 5.3 m/3.7 m/3.0 m. Als Sende- und Empfangsantennen werden in der MVK ein Paar log.-per. Antennen und ein Paar Hornantennen verwendet, die zusammen den Frequenzbereich von 200MHz bis 18GHz abdecken. Weiterhin steht eine lasergespeiste Feldsonde zur Messung der elektrischen Feldstärke zur Verfügung. Ziel des Konferenzbeitrages ist es anhand ausgewählter Messergebnisse einen ersten Einblick in die aktuellen Forschungsthemen zu geben. Zum Nachweis der Schirmwirkung der MVK erfolgte nach deren Aufbau zunächst eine Schirmdämpfungsmessung nach IEEE Std. 299-2006 an fünf Messpositionen. Die weiteren Ausführungen sind thematisch wie folgt gegliedert: Resonanzfrequenzen der Modenverwirbelungskammer (Abb.: Vorwärtstransmissionsfaktor in Abhängigkeit der Frequenz); Zeitverhalten des Feldes in der Kammer (hierzu 3 Abb.: Zeitlicher Verlauf des Leistungspegels an der Empfangsantenne in Abhängigkeit der Frequenz und der Rührerstellung, Zeitlicher Verlauf des Leistungspegels in Abhängigkeit der Frequenz sowie Zeitlicher Verlauf des Leistungspegels an der Empfangsantenne in Abhängigkeit der Rührerstellung); Güte der Kammer (Abb.: Mittlere Güte in Abhängigkeit der Frequenz); Bestimmung der Antenneneffektivitäten (2 Abb.: Bestimmung der Antenneneffektivität in der MVK, Ergebnisse für die log.-per. Antennen und die Hornantennen und Bestimmung der Antenneneffektivität im Antennenmessraum, Ergebnisse für die Hornantennen); Homogenität des Feldes (Abb.: Feldhomogenität im definierten Testvolumen).
EMV-Aspekte beim Aufbau eines schnellen Halbleiterschalters
Creators: name: Sack, Martin
name: Müller, Georg
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Parallelschaltung
subject: Überspannungsschutz
subject: Halbleiterschalter
subject: Streukapazität
subject: Schaltzeit
subject: Laufzeit
subject: MOS-FET
subject: elektromagnetische Verträglichkeit
subject: Gegenmaßnahme
subject: Suppressordiode
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: Der kaskadierte Betrieb von MOSFETs erfordert eine exakte Synchronisation aller Stufen. Dies wird durch ein schnell ansteigendes Auslösesignal und eine zeitlich konstante Signallaufzeit jeder Stufe erzielt. Eine niederinduktive Ansteuerung der MOSFETs, die auch eine Trennung der Massefläche in Leistungs- und Signalmasse beinhaltet, ist erforderlich für schnelle Schaltzeiten. Die Parallelschaltung von Supperssordioden dient als Überspannungsschutz für jede Stufe. Insbesondere beim Betrieb mit zwei Schaltern bewirkt die Schalterkapazität des hochohmigen Schalters Stromschwingungen. Eine Gegenmaßnahme wäre der Aufbau mit geringerer Schalterkapazität, wie er z.B. durch Verzicht auf die Suppressordioden erreicht werden könnte. Beim Betrieb in einer Blumlein-Anordnung mit aufgewickelten Koaxialleitungen kann die Erdstreukapazität einer Leitung mittels Ferriten von der Last entkoppelt werden.
Effects of Detritus on the Mosquito Culex pipiens: Phragmites and Schedonorus (Festuca) Invasion Affect Population Performance
Creators: name: Leisnham, Paul T.
name: Scott, Brandon
name: Baldwin, Andrew H.
name: LaDeau, Shannon L.
Publisher: name: MDPI
Year: 2019
Subjects: Culex pipiens
Festuca
Juncus
Phragmites
stormwater
Typha
West Nile

description: Species interactions that influence the performance of the exotic mosquito Culex pipiens can have important effects on the transmission risk of West Nile virus (WNV). Invasive plants that alter the vegetation communities of ephemeral ground pools may facilitate or resist the spread of C. pipiens (L.) by altering allochthonous inputs of detritus in those pools. To test this hypothesis, we combined field surveys of roadside stormwater ditches with a laboratory microcosm experiment to examine relationships between C. pipiens performance and water quality in systems containing detritus from invasive Phragmites australis (Cav.) Trin. Ex Steud., introduced Schedonorus arundinaceus (Schreb.) Dumort., or native Juncus effusus L. or Typha latifolia L. In ditches, C. pipiens abundance was unrelated to detritus species but female C. pipiens were significantly larger from ditches with S. arundinaceus and smaller with J. effusus. Larger and smaller C. pipiens were also produced in microcosms provisioned with S. arundinaceus and J. effusus, respectively, yet the per capita rate of population of change did not vary. Larger females from habitats with S. arundinaceus were likely caused by faster decay rates of S. arundinaceus and resultant increases in microbial food, but lower survival as a result of fouling and higher tannin-lignin concentrations resulted in little changes to overall population performance. Larger female mosquitoes have been shown to have greater potential for transmitting arboviruses. Our findings suggest that changed community-level interactions from plant invasions in urban ephemeral ground pools can affect the fitness of C. pipiens and possibly increase WNV risk.
Einstein@Home discovers a radio-quiet gamma-ray millisecond pulsar
Creators: name: Clark, Colin J.
name: Pletsch, Holger J.
name: Wu, Jason
name: Guillemot, Lucas
name: Kerr, Matthew
name: Johnson, Tyrel J.
name: Camilo, Fernando
name: Salvetti, David
name: Allen, Bruce
name: Et Al.
Publisher: name: Washington : American Association for the Advancement of Science (A A A S)
Year: 2018
Subjects: subject: Distributed computer systems
subject: Pulsars
subject: Blind searches
subject: Emission beams
subject: Galactic bulge
subject: Gamma ray sources
subject: Large area telescopes
subject: Millisecond pulsars
subject: Neutron stars
subject: Radio observation
subject: Gamma rays
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Millisecond pulsars (MSPs) are old neutron stars that spin hundreds of times per second and appear to pulsate as their emission beams cross our line of sight. To date,radio pulsations have been detected from all rotation-powered MSPs. In an attempt to discover radio-quiet gamma-ray MSPs,we used the aggregated power from the computers of tens of thousands of volunteers participating in the Einstein@Home distributed computing project to search for pulsations from unidentified gamma-ray sources in Fermi Large Area Telescope data. This survey discovered two isolated MSPs,one of which is the only known rotation-powered MSP to remain undetected in radio observations. These gamma-ray MSPs were discovered in completely blind searches without prior constraints from other observations,raising hopes for detecting MSPs from a predicted Galactic bulge population. © 2018 The Authors,some rights reserved.
Transferdämpfung eines Flugzeughangars und Einflüsse auf Nachweis von Störfestigkeit und Störaussendung
Creators: name: Schüür, Jens
name: Küllmer, Alexander
name: Nunes, Rafael Renno
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Dämpfungsmessung
subject: Flugzeug
subject: Italien
subject: Störfestigkeit
subject: Störpegel
subject: Flugzeugantenne
subject: Radio
subject: Resonanz
subject: elektromagnetische Verträglichkeit
subject: Flugzeughangar
subject: Störaussendung
subject: Störaussendungsmessung
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: In dieser Veröffentlichung werden Messungen der Dämpfung eines Flugzeughangars präsentiert, welcher für Flugzeuge vom Typ Airbus A320 geeignet ist. Beeinflussende Faktoren wie beispielsweise unterschiedliche Messpositionen, Polarisationen und geöffnete Türen werden gegenübergestellt. Schutzabstände um das Flugzeug sind eine mögliche Lösung um dieselbe Dämpfung wie in dem Hangar zu erreichen. Weiterhin zeigen zeitgleiche Messungen des Grundrauschens außerhalb und innerhalb des Hangas, dass eine Abwägung der erwähnten Vor- und Nachteile bei Störaussendungsmessungen erfolgen muss. Für das System des Radio Altimeters ist in [Rafael Rennó Nunes, Jens Schüür, Statistical Investigation of Electromagnetic Transfer Path in Research Aircraft, EMC Europe 2012, 17-11 September 2012 in Rom, Italien] gezeigt, dass der Hangar die Dämpfung zwischen Messantennen im Flugzeug und den Flugzeugantennen beeinflusst. Den realen Flugzeugbetrieb bildet eine Messung im Freien eher nach, als eine Messung innerhalb des Hangars - zumal innerhalb des Hangars die Störpegel insbesondere unterhalb von 1,2 GHz höher sind als außerhalb des Hangars. Die Beeinflussung der Messungen durch Resonanzen und Reflexionen im Hangar sollte vor der Messung bestimmt werden, da diese stark beispielsweise von der Flugzeugposition abhängen. Insbesondere bei Messung der Störaussendung kann sich dieser Einfluss auswirken. Aus Sicht der elektromagnetischen Verträglichkeit ist eine Messung außerhalb des Hangars zu bevorzugen, da Flugzeuge in dieser Umgebung betrieben werden.
Conversational behaviour as characterisation: Pragmatics in Senecan Tragedy
Creators: name: Iurescia, Federica
Publisher: name: Zenodo
Year: 2023
Subjects: Latin
Roman Tragedy
Seneca
Historical Pragmatics
Interoperability
Conversation Analysis
Common Ground
Intersubjectivity
Linguistic Linked Open Data

description: Presentation given at the Seneca 2022 International Conference. What more can we say about Seneca? held in Lisbon, Portugal, 17-20 October 2022.
Evapotranspiration Data Product from NESDIS GET-D System Upgraded for GOES-16 ABI Observations
Creators: name: Fang, Li
name: Zhan, Xiwu
name: Schull, Mitchell
name: Kalluri, Satya
name: Laszlo, Istvan
name: Yu, Peng
name: Carter, Corinne
name: Hain, Christopher
name: Anderson, Martha
Publisher: name: MDPI
Year: 2019
Subjects: evapotranspiration (ET)
GOES-R
GET-D
drought monitoring

description: Evapotranspiration (ET) is a major component of the global and regional water cycle. An operational Geostationary Operational Environmental Satellite (GOES) ET and Drought (GET-D) product system has been developed by the National Environmental Satellite, Data and Information Service (NESDIS) in the National Oceanic and Atmospheric Administration (NOAA) for numerical weather prediction model validation, data assimilation, and drought monitoring. GET-D system was generating ET and Evaporative Stress Index (ESI) maps at 8 km spatial resolution using thermal observations of the Imagers on GOES-13 and GOES-15 before the primary operational GOES satellites transitioned to GOES-16 and GOES-17 with the Advanced Baseline Imagers (ABI). In this study, the GET-D product system is upgraded to ingest the thermal observations of ABI with the best spatial resolution of 2 km. The core of the GET-D system is the Atmosphere-Land Exchange Inversion (ALEXI) model, which exploits the mid-morning rise in the land surface temperature to deduce the land surface fluxes including ET. Satellite-based land surface temperature and solar insolation retrievals from ABI and meteorological forcing from NOAA NCEP Climate Forecast System (CFS) are the major inputs to the GET-D system. Ancillary data required in GET-D include land cover map, leaf area index, albedo and cloud mask. This paper presents preliminary results of ET from the upgraded GET-D system after a brief introduction of the ALEXI model and the architecture of GET-D system. Comparisons with in situ ET measurements showed that the accuracy of the GOES-16 ABI based ET is similar to the results from the legacy GET-D ET based on GOES-13/15 Imager data. The agreement with the in situ measurements is satisfactory with a correlation of 0.914 averaged from three Mead sites. Further evaluation of the ABI-based ET product, upgrade efforts of the GET-D system for ESI products, and conclusions for the ABI-based GET-D products are discussed.
Auswirkung höherer Datenraten bei CAN FD (Flexible Datarate) auf die EMV von CAN-Transceivern
Creators: name: Schoof, Adrien
name: Schulz, Gunnar
Publisher: name: Berlin : VDE-Verlag
Year: 2014
Subjects: subject: Datenrate
subject: CAN-Bus
subject: Ethernet
subject: Flexibilität
subject: elektromagnetische Verträglichkeit
subject: Autohersteller
subject: Fahrzeughersteller
subject: Messstandard
subject: Breitband
subject: Transceiver
subject: Messverfahren
subject: Filterung
subject: Grenzwert
subject: Störfestigkeit
subject: Netzwerktopologie
subject: CAN-Transceiver
subject: Komfortfunktion
subject: Bandbreitenanforderung
subject: Störaussendung
subject: Störfestigkeitsmessung
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: Trotz der zunehmenden Verwendung von Breitbandverbindungen wie FlexRay und Ethernet im Fahrzeug stellt der vergleichsweise langsame CAN-Bus aufgrund seiner Flexibilität und Einfachheit nach wie vor den Großteil der Netzwerke im Auto dar. Da aufgrund zunehmender Datenmengen auf dem CAN-Bus (u. a. Diagnose, ECU-Programmierung, Komfortfunktionen) die Bandbreitenanforderung steigt, wurde der CAN FD-Standard (Flexible Datarate) ausgearbeitet, der innerhalb des Datenfeldes eines CAN FD-Frames eine Erhöhung der Datenrate zulässt. Das CAN FD-Protokoll gewinnt bei Autoherstellern zunehmend an Bedeutung. Der nächste Schritt ist somit die Untersuchung heutiger CAN-Transceiver und ob sie bei höheren Datenraten die elektromagnetische Verträglichkeit (EMV)-Anforderungen der Fahrzeughersteller erfüllen. Weiterhin muss hinterfragt und geprüft werden, ob etablierte EMV-Messstandards ihre Gültigkeit behalten oder eventuell angepasst werden müssen. Die Untersuchungen haben gezeigt, dass heutige CAN-Transceiver auch bei höheren Datenraten eingesetzt werden können und eine stabile Kommunikation gewährleistet ist. Das CAN FD-Protokoll bietet damit eine einfach zu realisierende und günstige Möglichkeit zur Erweiterung der verfügbaren Bandbreite des CAN-Busses. Bei Wahl geeigneter Transceiver müssen hierbei lediglich der Controller und die Software, nicht aber der Transceiver oder die Netzwerktopologie, angepasst werden. Bezüglich der EMV-Messergebnisse wird festgestellt, dass aufgrund der Anforderungen an die Störaussendung bei Transceivern mit CAN FD-Eigenschaften eine Filterung mittels Drossel notwendig ist, die auch Vorteile für die Störfestigkeit mit sich bringt. Heute gültige Grenzwerte werden dabei nicht verletzt. Die Untersuchungen bezüglich IC- und Komponentenmessverfahren haben deutlich unterschiedliche Resultate hinsichtlich der Störfestigkeitsmessung ergeben. Hier müssen zukünftig die Messverfahren und die Korrelation der Ergebnisse neu diskutiert und angepasst werden.
A Comparison of Irrigation-Water Containment Methods and Management Strategies Between Two Ornamental Production Systems to Minimize Water Security Threats
Creators: name: Ristvey, Andrew G.
name: Belayneh, Bruk E.
name: Lea-Cox, John D.
Publisher: name: MDPI
Year: 2019
Subjects: container production
propagation
in-ground production
water quality
disease management
irrigation return water
reservoir

description: Water security in ornamental plant production systems is vital for maintaining profitability. Expensive, complicated, or potentially dangerous treatment systems, together with skilled labor, is often necessary to ensure water quality and plant health. Two contrasting commercial ornamental crop production systems in a mesic region are compared, providing insight into the various strategies employed using irrigation-water containment and treatment systems. The first is a greenhouse/outdoor container operation which grows annual ornamental plants throughout the year using irrigation booms, drip emitters, and/or ebb and flow systems depending on the crop, container size, and/or stage of growth. The operation contains and recycles 50–75% of applied water through a system of underground cisterns, using a recycling reservoir and a newly constructed 0.25 ha slow-sand filtration (SSF) unit. Groundwater provides additional water when needed. Water quantity is not a problem in this operation, but disease and water quality issues, including agrochemicals, are of potential concern. The second is a perennial-plant nursery which propagates cuttings and produces field-grown trees and containerized plants. It has a series of containment/recycling reservoirs that capture rainwater and irrigation return water, together with wells of limited output. Water quantity is a more important issue for this nursery, but poor water quality has had some negative economic effects. Irrigation return water is filtered and sanitized with chlorine gas before being applied to plants via overhead and micro-irrigation systems. The agrochemical paclobutrazol was monitored for one year in the first operation and plant pathogens were qualified and quantified over two seasons for both production systems. The two operations employ very different water treatment systems based on their access to water, growing methods, land topography, and capital investment. Each operation has experienced different water quantity and quality vulnerabilities, and has addressed these threats using a variety of technologies and management techniques to reduce their impacts.
Amaranthus retroflexus L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. retroflexus L. Cat. 305. Bis 1800m. l: Monthey (J.) Salvan (Coquoz,Wurgler); LesMarecottes (Wurgler); LaBätiaz (idem)^- 2: Branson-Saillon (J, Garns). - 3:Sarreyer (Bagnes); Iserables; Val de Nendaz; Loye ob G^one; Rechy"(aUes7wurgler); Vissoie (Sulger, Wurgler); Visp (J,Thellung)^; Bahnhof Stalden (Thel^ lung)'7;Saas'-Fee,1800m (Hirschmann~1953); Brig(J,Thellung).- 3a:Gondo,Kartoffeläckerund Strassenrand (Becherer 1947). Forma rubricaulis Thell. - 3:Stalden(Vispertal) (Christ). Var"DeUlei'(Richter etLoret) Thell.- Wallis (Thellung in Ascherson und Graebner,Synopsis,V,l, S.261 [1914]).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Roman Tragedy and Universal Dependencies. A case study
Creators: name: Iurescia, Federica
Publisher: name: Zenodo
Year: 2023
Subjects: Latin
Universal Dependencies
Roman Tragedy
Linguistic Linked Open Data

description: Presentation given at the Res Novae: Research on Latin and the languages of Ancient Italy in the age of digital corpora  workshop, held at the Faculty of Classics, Cambridge, UK, June 2-3, 2023.
Kosmische Leuchttürme. Heller als Milliarden Sonnen
Creators: name: Röpke, Friedrich
Publisher: name: Ruperto Carola
Year: 2015

description: Heller als komplette Galaxien können einzelne Sterne aufleuchten – um kurz darauf zu erlöschen. Doch was lässt solche „Supernovae“ entstehen? Heidelberger Astrophysiker simulieren den spektakulären Sternentod mithilfe des Computers und geben neue überraschende Antworten.
description: Ruperto Carola, Nr. 7 (2015): Schatten & Licht
Food-Grade Nanoemulsions: Preparation, Stability and Application in Encapsulation of Bioactive Compounds
Creators: name: Kiu, Qingqing
name: Huang, He
name: Chen, Honghong
name: Lin, Junfan
name: Wang, Qin
Publisher: name: MDPI
Year: 2019
Subjects: nanoemulsions
preparation
stability
application
encapsulation

description: Nanoemulsions have attracted significant attention in food fields and can increase the functionality of the bioactive compounds contained within them. In this paper, the preparation methods, including low-energy and high-energy methods, were first reviewed. Second, the physical and chemical destabilization mechanisms of nanoemulsions, such as gravitational separation (creaming or sedimentation), flocculation, coalescence, Ostwald ripening, lipid oxidation and so on, were reviewed. Then, the impact of different stabilizers, including emulsifiers, weighting agents, texture modifiers (thickening agents and gelling agents), ripening inhibitors, antioxidants and chelating agents, on the physicochemical stability of nanoemulsions were discussed. Finally, the applications of nanoemulsions for the delivery of functional ingredients, including bioactive lipids, essential oil, flavor compounds, vitamins, phenolic compounds and carotenoids, were summarized. This review can provide some reference for the selection of preparation methods and stabilizers that will improve performance in nanoemulsion-based products and expand their usage.
The Neulateinische Wortliste in LiLa: the process of linking a lexical resource as Linked Open Data
Creators: name: Iurescia, Federica
Publisher: name: Zenodo
Year: 2023
Subjects: Latin
Interoperability
Lexical resource
Linguistic Linked Open Data

description: Presentation given at the LiLa Project Closing Event, 25-26th May 2023, Milan, Italy
Alloscleria Topsent 1927
Creators: name: Morrow, Christine
name: Cárdenas, Paco
name: Boury-Esnault, Nicole
name: Picton, Bernard
name: Mccormack, Grace
name: Soest, Rob Van
name: Collins, Allen
name: Redmond, Niamh
name: Maggs, Christine
name: Sigwart, Julia
name: Allcock, Louise A.
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Demospongiae
Axinellida
Heteroxyidae
Alloscleria

description: GENUS ALLOSCLERIA TOPSENT, 1927
Type species: Alloscleria tenuispinosa Topsent, 1927.
Included species: Alloscleria tenuispinosa Topsent, 1927 (p. 6)
Remarks: Topsent (1927) erected the genus Alloscleria for his new species Alloscleria tenuispinosa and Topsentia glabra (Topsent, 1898) and allocated the genus to Spongosoritidae (= Halichondriidae). He considered Alloscleria tenuispinosa most closely allied with Topsentia glabra. Hooper (2002b) synonymized Alloscleria with Halicnemia, primarily on the basis of the presence of acanthoxea. However, Erpenbeck & Van Soest (2002), in a discussion of Topsentia Berg, 1899, subsequently resurrected Alloscleria, although they retained the genus in Desmoxyidae.
description: Published as part of Morrow, Christine, Cárdenas, Paco, Boury-Esnault, Nicole, Picton, Bernard, Mccormack, Grace, Soest, Rob Van, Collins, Allen, Redmond, Niamh, Maggs, Christine, Sigwart, Julia & Allcock, Louise A., 2019, Integrating morphological and molecular taxonomy with the revised concept of Stelligeridae (Porifera: Demospongiae), pp. 31-81 in Zoological Journal of the Linnean Society 187 on pages 67-68
Repercussions from the Far East: A Comparison of the Catholic and Nestorian Presence in China
Creators: name: Ertl, Thomas
Publisher: name: Transcultural Studies
Year: 2015
Subjects: Medieval, Missionary History, Cultural Exchange

description: In the middle ages, Franciscan monks from Western Europe and Nestorian monks from Syria traveled to the Far East to spread the gospel and to establish their churches in the region. Although they shared similar goals, Franciscans and Nestorians employed different methods of persuasion, so the results and legacy of their missionary work differed considerably. The Nestorians were remarkably successful in the Far East, as proven by the gravestones in the Mongolian steppes; in their home countries, ironically, they were increasingly marginalized. In contrast, the Franciscans and other European travelers to the Far East did not achieve similar missionary success and scarcely left a mark on the region after the mid-fourteenth century. The travelogues and letters they composed for their audiences at home, however, had a great impact, both on late-medieval European ambitions to open up the world and on the return of the Catholic mission in seventeenth-century China. In summary, the Nestorians’ legacy was stone monuments in the East and the Franciscans left inspiring texts in the West. A comparison of the respective practices of Christian missionary activity in the Far East may further recognition of how medieval cross-cultural travel affected both the regions of origin and the regions of destination in various ways. Therefore, even though the Christian presence in the Far East vanished in the late middle ages, it had lasting consequences for the societies from whence the missionaries came. It not only broadened the West’s knowledge of the Far East but also influenced the renewal of Christian missions in the region from the seventeenth century onwards.
description: Transcultural Studies, No 2 (2015)