cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Antennae Galaxies (NGC 4038/4039) Revisited: ACS and NICMOS Observations of a Prototypical Merger
Creators: name: Whitmore, Bradley C.
name: Chandar, Rupali
name: Schweizer, Francois
name: Rothberg, Barry
name: Leitherer, Claus
name: Rieke, Marcia
name: Rieke, George
name: Blair, W. P.
name: Mengel, S.
name: Alonso-Herrero, A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The ACS and NICMOS have been used to obtain new HST images of NGC 4038/4039 ("The Antennae"). These new observations allow us to better differentiate compact star clusters from individual stars, based on both size and color. We use this ability to extend the cluster luminosity function by approximately two magnitudes over our previous WFPC2 results, and find that it continues as a single power law, dN/dL propto L^alpha with alpha=-2.13+/-0.07, down to the observational limit of Mv~-7. Similarly, the mass function is a single power law dN/dM propto M^beta with beta=-2.10+/-0.20 for clusters with ages t<3x10^8 yr, corresponding to lower mass limits that range from 10^4 to 10^5 Msun, depending on the age range of the subsample. Hence the power law indices for the luminosity and mass functions are essentially the same. The luminosity function for intermediate-age clusters (i.e., ~100-300 Myr old objects found in the loops, tails, and outer areas) shows no bend or turnover down to Mv~-6, consistent with relaxation-driven cluster disruption models which predict the turnover should not be observed until Mv~-4. An analysis of individual ~0.5-kpc sized areas over diverse environments shows good agreement between values of alpha and beta, similar to the results for the total population of clusters in the system. Several of the areas studied show evidence for age gradients, with somewhat older clusters appearing to have triggered the formation of younger clusters. The area around Knot B is a particularly interesting example, with an ~10-50 Myr old cluster of estimated mass ~10^6 Msun having apparently triggered the formation of several younger, more massive (up to 5x10^6 Msun) clusters along a dust lane.
description: 84 pages, 9 tables, 31 figures; ApJ accepted
Evidence for Lignocellulose-Decomposing Enzymes in the Genome and Transcriptome of the Aquatic Hyphomycete Clavariopsis aquatica
Creators: name: Heeger, Felix
name: Bourne, Elizabeth C.
name: Wurzbacher, Christian
name: Funke, Elisabeth
name: Lipzen, Anna
name: He, Guifen
name: Ng, Vivian
name: Grigoriev, Igor V.
name: Schlosser, Dietmar
name: Monaghan, Michael T.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: aquatic fungi
subject: differential expression
subject: lignocellulose
subject: laccase
subject: RNA-Seq
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::579 Mikroorganismen, Pilze, Algen

description: Fungi are ecologically outstanding decomposers of lignocellulose. Fungal lignocellulose degradation is prominent in saprotrophic Ascomycota and Basidiomycota of the subkingdom Dikarya. Despite ascomycetes dominating the Dikarya inventory of aquatic environments, genome and transcriptome data relating to enzymes involved in lignocellulose decay remain limited to terrestrial representatives of these phyla. We sequenced the genome of an exclusively aquatic ascomycete (the aquatic hyphomycete Clavariopsis aquatica), documented the presence of genes for the modification of lignocellulose and its constituents, and compared differential gene expression between C. aquatica cultivated on lignocellulosic and sugar-rich substrates. We identified potential peroxidases, laccases, and cytochrome P450 monooxygenases, several of which were differentially expressed when experimentally grown on different substrates. Additionally, we found indications for the regulation of pathways for cellulose and hemicellulose degradation. Our results suggest that C. aquatica is able to modify lignin to some extent, detoxify aromatic lignin constituents, or both. Such characteristics would be expected to facilitate the use of carbohydrate components of lignocellulose as carbon and energy sources.
Optimized Multi-Party Quantum Clock Synchronization
Creators: name: Ben-Av, Radel
name: Exman, Iaakov
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A multi-party protocol for distributed quantum clock synchronization has been claimed to provide universal limits on the clock accuracy, viz. that accuracy monotonically decreases with the number n of party members. But, this is only true for synchronization when one limits oneself to W-states. This work shows that usage of Zen-states, a generalization of W-states, results in improved accuracy, having a maximum when \lfloor n/2 \rfloor of its members have their qubits with a |1> value.
Long-Term Impact of Economic Downturn and Loneliness on Psychological Distress: Triple Crises of COVID-19 Pandemic
Creators: name: Liu, Shuyan
name: Haucke, Matthias N.
name: Heinzel, Stephan
name: Heinz, Andreas
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: mental health and wellbeing
subject: income
subject: government debt
subject: perceived social isolation
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: Background: The COVID-19 crisis poses global mental health and global economy challenges. However, there is a lack of longitudinal research investigating whether financial instability and social disruption may increase the risk of developing mental health problems over time that may potentially outlast the pandemic. Methods: We conducted an online survey for members of the general population (n = 2703) in Germany during the twelve months spanning from April 2020 to March 2021. We investigated the development of COVID-19 related psychological distress, the number of unemployed people, federal government debt, income distribution, and loneliness over the time period. Results: Over a period of twelve months, 53.6% of respondents in Germany reported experiencing psychological distress, varying from mild levels, 34.2%, to severe levels, 19.4%, of distress. High federal government debt, high incident COVID-19 cases, low incomes, and the prevalence of loneliness were found to be associated with increased long-term mental health problems. Psychological distress scores were most strongly increased in female and young respondents as well as those who reported fewer years of education, low income, and higher loneliness. Conclusions: Our study highlights factors that have a long-term impact on mental health amid the COVID-19 pandemic. We suggest that specific mental-health services could be offered to support high-risk groups experiencing financial fragility and loneliness. For purposes of safeguarding their mental health there is a need to monitor and track such risk factors in real time.
Absence of a Periodic Component in Quasar z-Distribution
Creators: name: Repin, Serge V.
name: Komberg, Boris V.
name: Lukash, Vladimir N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Since the discovery of quasars in papers often appeared and appear the assertions that the redshift quasar distribution includes a periodic component with the period $Δz = 0.063$ or 0.11. A statement of such kind, if it is correct, may manifest the existence of a far order in quasar distribution in cosmological time, that might lead to a fundamental revision all the cosmological paradigm. In the present time there is a unique opportunity to check this statement with a high precision, using the rich statictics of 2dF and SDSS catalogues (about 85000 quasars). Our analysis indicates that the periodic component in distribution of quasar redshifts is absent at high confidence level.
An Improved Move-To-Front(IMTF) Off-line Algorithm for the List Accessing Problem
Creators: name: Mohanty, Rakesh
name: Tripathy, Sasmita
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: For the List Accessing Problem, Move-To-Front(MTF) algorithm has been proved to be the best performing online list accessing algorithm till date in the literature[10]. In this paper, we have made a comprehensive analysis of MTF algorithm and developed an Improved-MTF (IMTF) offline algorithm. We have generated two new types of data set and devise a new method of experimental analysis for our proposed algorithm. Our experimental analysis shows that IMTF is performing better than MTF algorithm.
description: 6 pages, 4 Figures
Have the missing cosmic baryons been found?
Creators: name: Behar, Ehud
name: Dado, Shlomo
name: Dar, Arnon
name: Laor, Ari
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The angular power spectrum and polarization of the cosmic microwave background radiation (CMB), the relative abundances of primordial hydrogen, deuterium and helium isotopes, and the large-scale structure of the universe all indicate that 4.5% of the current mass density of the universe consists of baryons. However, only a small fraction of these baryons can be accounted for in stars and gas inside galaxies, galaxy groups and galaxy clusters, and in spectral-line absorbing gas in the intergalactic medium (IGM). Too hot to show up in Lyman-absorption, too cool to cause detectable spectral distortions of the cosmic microwave background radiation, and too diffused to emit detectable X-rays, about 90% of the cosmic baryons remain missing in the local universe (redshift z~0). Here, we report on prevalent, isotropic, source independent, and fairly uniform soft X-ray absorption along the lines of sight to high-z gamma-ray bursts (GRBs) and quasars. It has the magnitude, redshift and energy dependence that are expected from a hot IGM that contains the missing cosmological baryons and has a mean metallicity similar to that in the intracluster medium (ICM) of galaxy clusters.
description: Invited talk presented by A. Dar at the 24 Rencontre De Moriond, La Thuile Italy February 27 - March 5, 2010
Non-equilibrium Condensation Process in a Holographic Superconductor
Creators: name: Murata, Keiju
name: Kinoshita, Shunichiro
name: Tanahashi, Norihiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the non-equilibrium condensation process in a holographic superconductor. When the temperature T is smaller than a critical temperature T_c, there are two black hole solutions, the Reissner-Nordstrom-AdS black hole and a black hole with a scalar hair. In the boundary theory, they can be regarded as the supercooled normal phase and the superconducting phase, respectively. We consider perturbations on supercooled Reissner-Nordstrom-AdS black holes and study their non-linear time evolution to know about physical phenomena associated with rapidly-cooled superconductors. We find that, for T
description: 20 pages, 7 figures
Identifying stakeholders' values and preferences for management of Pacific herring (Clupea pallasii) fisheries in British Columbia, Canada
Creators: name: Scott, Jeffrey
Publisher: name: University of British Columbia
Year: 2017

description: It is said that fisheries management is concerned with managing people, rather than fish. Often managers must make difficult decisions under conditions of uncertain scientific predictions, conflicting demands from stakeholder groups, or high risk of harm to the resource and/or its users. Previous publications have applied decision theory and management theory to fisheries management, but such approaches may not acknowledge the legitimacy of all competing viewpoints and values. Post-normal science, on the other hand, does so explicitly, and aims to resolve conflicts through collaborative effort based on high-quality information. This thesis explores the issues surrounding political conflicts over Pacific herring (Clupea pallasii) fisheries management in British Columbia, Canada in the 2010s, with a focus on the herring stocks in Haida Gwaii waters. These fisheries offer a unique yet generalizable case of stakeholder conflict, and an opportunity to examine that conflict’s root causes through my own original framework that parses normative from descriptive claims made by competing groups, to ascertain what those groups consider quality information and desired outcomes. I present here research conducted by an interdisciplinary team between 2015 and 2017 as part of a larger project, which employed a novel value- and ecosystem-based management approach methodology developed by Lam et al. to investigate the normative values, descriptive beliefs and fishery management preferences of 47 individuals in Haida Gwaii and 28 British Columbian herring fishery participants. The semi-structured interviews within the values-based component consisted of values-ranking and management scenario-preference exercises, an exercise associating respondents’ values with management scenarios, and open-ended questions on respondents’ experience and beliefs about herring and its fisheries. Analysis tabulated respondents’ value priorities and scenario preferences, and investigated descriptive beliefs about herring stocks. Results provide evidence that stakeholder groups’ nominal values are quite similar, while their preferences for management of herring stocks in Haida Gwaii are starkly different, and potentially influenced by level of trust in the opposing group and in management. This suggests that trust-building between opposing stakeholder groups, and between management and stakeholders, is a necessary first step toward conflict resolution.
Big Sandy/Little Sandy and Tygarts Creek Basins
Creators: name: Carey, Daniel I.
Publisher: name: Kentucky Geological Survey, University of Kentucky
Year: 2009

description: Abstract:
Nearly 7,600 miles of streams flow through the basin's 3,440 square miles in 14 counties to the Tug Fork, Big Sandy River, and Ohio River. The Tygarts Creek–Little Sandy River Basin includes 1,160 square miles. The Big Sandy River Basin has 2,285 square miles in Kentucky and 1,950 square miles in West Virginia and Virginia. There are nearly 17,000 acres of wetlands, including water bodies.
Residents draw about 27 million gallons of water per day (mgd) from streams and reservoirs in the basin. About three in five residents are on public water; other households rely primarily on domestic wells. Only about one in four households are on public sewer. On-site wastewater treatment is a critical issue affecting water quality throughout the basin.
More than 540 miles of streams in the basin do not fully support designated uses for warm-water aquatic habitat, fish consumption, and primary contact recreation. Most streams have not been assessed. The percentage of assessed streams not supporting uses was warm-water aquatic habitat (60%); fish consumption (16%); primary contact recreation (40%).
45 miles of streams have been declared special use waters: either exceptional waters or reference reach waters.
There are four remediation priority watersheds including 200 square miles primary impacts are pathogens, PCBs, metals, siltation, dissolved solids, chlorides, and salinity.
Dual Lifetime Referencing as Applied to a Chloride Optical Sensor
Creators: name: Huber, Christian
name: Klimant, Ingo
name: Krause, Christian
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 2001
Subjects: subject: 540 Chemie

description: A membrane with an optical response to chloride has been developed that contains two luminophores that display two largely different decay times. The first luminophore (the “reference”) is a chloride-insensitive ruthenium metal−ligand complex possessing a decay time in the microsecond range. The second luminophore is the short-lived chloride-quenchable fluorescent probe lucigenin. Both are contained in a hydrogel matrix and are excited by a blue LED emitting sinusoidally modulated light. Under these conditions, the chloride-dependent fluorescence intensity of lucigenin can be converted in an analyte-dependent fluorescence phase shift that depends on the ratio of the two luminescence intensities and can be measured at modulation frequencies of typically 45 kHz. The dynamic range of this sensor can be adjusted by either varying the ratio of the two luminophores or selecting a particular optical filter combination.
pH-Insensitive Ion Selective Optode: A Coextraction-Based Sensor for Potassium Ions
Creators: name: Krause, Christian
name: Werner, Tobias
name: Huber, Christian
name: Wolfbeis, Otto S.
name: Leiner, Marc J. P.
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 540 Chemie

description: A novel type of optical potassium sensor is presented whose response mechanism is virtually insensitive to pH and ionic strength. It is based on a coextraction mechanism using a lipophilic ion carrier and a fluorescent anion, the two contained in a solid oil-in-water emulsion. The latter is composed of lipophilic plasticizer droplets (containing valinomycin) and a hydrogel containing the highly solvatochromic anionic dye merocyanine 540. On exposure to a solution of potassium ions, these are extracted, along with the anionic fluorophore, into the plasticizer phase wherein the dye is much more fluorescent than in hydrogel. The dynamic range of sensor response can be adjusted by variation of the membrane composition. Membranes were optimized for measurements in the physiological range. The dynamic range is from 0.1 to 50 mmol/L K+. Response times are <3 min within this concentration range.
Multi-ion imaging using fluorescent sensors in a microtiterplate array format
Creators: name: Mayr, Torsten
name: Liebsch, Gregor
name: Klimant, I.
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 2002
Subjects: subject: 540 Chemie

description: A novel type of sensor array destined for water analyses is described. The sensor delivers simple on/off patterns of complex ion mixtures. Fluorescent indicators for Ca2+, Na+, Mg2+, SO42-, Cl− and Hg2+ were arranged in microtiterplates and the analytical information was imaged with a CCD camera within microseconds using an intrinsically referencing method.
Deformation of the O'Grady moduli spaces
Creators: name: Perego, Arvid
name: Rapagnetta, Antonio
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: In this paper we study moduli spaces of sheaves on an abelian or projective K3 surface. If $S$ is a K3, $v=2w$ is a Mukai vector on $S$, where $w$ is primitive and $w^{2}=2$, and $H$ is a $v-$generic polarization on $S$, then the moduli space $M_{v}$ of $H-$semistable sheaves on $S$ whose Mukai vector is $v$ admits a symplectic resolution $\widetilde{M}_{v}$. A particular case is the $10-$dimensional O'Grady example $\widetilde{M}_{10}$ of irreducible symplectic manifold. We show that $\widetilde{M}_{v}$ is an irreducible symplectic manifold which is deformation equivalent to $\widetilde{M}_{10}$ and that $H^{2}(M_{v},\mathbb{Z})$ is Hodge isometric to the sublattice $v^{\perp}$ of the Mukai lattice of $S$. Similar results are shown when $S$ is an abelian surface.
description: 29 pages
Cross-Reactive Metal Ion Sensor Array in a Micro Titer Plate Format
Creators: name: Mayr, Torsten
name: Igel, Christian
name: Liebsch, Gregor
name: Klimant, Ingo
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 540 Chemie

description: A cross-reactive array in a micro titer plate (MTP) format is described that is based on a versatile and highly flexible scheme. It makes use of rather unspecific metal ions probes having almost identical fluorescence spectra, thus enabling (a) interrogation at identical analytical wavelengths, and (b) imaging of the probes contained in the wells of the MTP using a CCD camera and an array of blue-light-emitting diodes as a light source. The unselective response of the indicators in the presence of mixtures of five divalent cations generates a characteristic pattern that was analyzed by chemometric tools. The fluorescence intensity of the indicators was transferred into a time-dependent parameter applying a scheme called dual lifetime referencing. In this method, the fluorescence decay profile of the indicator is referenced against the phosphorescence of an inert reference dye added to the system. The intrinsically referenced measurements also were performed using blue LEDs as light sources and a CCD camera without intensifiers as the detector. The best performance was observed if each well was excited by a single LED. The assembly allows the detection of dye concentrations in the nanomoles-per-liter range without amplification and the acquisition of 96 wells simultaneously. The pictures obtained form the basis for evaluation by pattern recognition algorithms. Support vector machines are capable of predicting the presence of significant concentrations of metal ions with high accuracy.
Orbit types of the compact Lie group E_7 in the complex Freudenthal vector space P^C
Creators: name: Miyasaka, Takashi
name: Yokota, Ichiro
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 22E15, 22E20, 22E46, 22C40

description: Let J be the exceptional Jordan algebra over R and J^C its complexification. Then the simply connected compact exceptional Lie group F_4 acts on J and F_4 has three orbit types which are F_4/F_4, F_4/Spin(9), F_4/Spin(8). Similarly the simply connected compact exceptional Lie group E_6 acts on J^C and E_6 has five orbit types which are E_6/E_6, E_6/F_4, E_6/Spin(10), E_6/Spin(9), E_6/Spin(8) . In this paper, we determine the orbit types of the simply connected compact exceptional Lie group E_7 in the complex Freudenthal vector space P^C. As results, E_7 has seven orbit types which are E_7/E_7, E_7/E_6, E_7/F_4, E_7/Spin(11), E_7/Spin(10), E_7/Spin(9), E_7/Spin(8).
description: 6pages, http://web.me.com/coolkai/YSTM/YSTM/YSTM.html
An X-ray upper limit on the presence of a Neutron Star for the Small Magellanic Cloud and Supernova Remnant 1E0102.2-7219
Creators: name: Rutkowski, Michael J.
name: Schlegel, Eric M.
name: Keohane, Jonathan W.
name: Windhorst, Rogier A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present Chandra X-ray Observatory archival observations of the supernova remnant 1E0102.2-7219, a young Oxygen-rich remnant in the Small Magellanic Cloud. Combining 28 ObsIDs for 324 ks of total exposure time, we present an ACIS image with an unprecedented signal-to-noise ratio (mean S/N ~ sqrt(S) ~6; maximum S/N > 35) . We search within the remnant, using the source detection software {\sc wavdetect}, for point sources which may indicate a compact object. Despite finding numerous detections of high significance in both broad and narrow band images of the remnant, we are unable to satisfactorily distinguish whether these detections correspond to emission from a compact object. We also present upper limits to the luminosity of an obscured compact stellar object which were derived from an analysis of spectra extracted from the high signal-to-noise image. We are able to further constrain the characteristics of a potential neutron star for this remnant with the results of the analysis presented here, though we cannot confirm the existence of such an object for this remnant.
description: Accepted to the Astrophysical Journal
The entropy core in galaxy clusters: numerical and physical effects in cosmological grid simulations
Creators: name: Vazza, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigated the numerical and physical reasons leading to a flat distribution of low gas entropy in the core region of galaxy clusters, as commonly found in grid cosmological simulations. To this end, we run a set of 30 high resolution re-simulations of a 3 x 10^14 M_sol/h cluster of galaxies with the AMR code ENZO, exploring and investigating the details involved in the production of entropy in simulated galaxy clusters. The occurrence of the flat entropy core is found to be mainly due to hydro-dynamical processes resolved in the code and that additional spurious effects of numerical origin (e.g. artificial heating due to softening effects or N-body noise) can affect the size and level of the entropy core only in a minor way. We show that the entropy profile of non-radiative simulations is produced by a mechanism of "sorting in entropy" which takes place with regularity during the cluster evolution. Using gas tracers we prove that the flat entropy core is caused by physical mixing of gravity-driven subsonic motions within the shallow inner cluster potential. Re-simulations were also produced for the same cluster object with the addition of radiative cooling, uniform pre-heating at high redshift (z=10) and late (z<1) thermal energy feedback from AGN activity in the cluster, in order to assess the effects of such mechanisms on the final entropy profile of the cluster. We report on the infeasibility of balancing the catastrophic cooling and recovering a flat entropy profile with the investigated trials for AGN activity alone, while for a sub-set of pre-heating models, or AGN feedback plus pre-heating models, a flat entropy distribution similar to non-radiative runs can be obtained with a viable energy requirement, and in good consistency with X-ray observations.
description: 24 pages, 24 images. MNRAS accepted
A Large-Scale FPGA-Based Trigger and Dead-Time Free DAQ System for the Kaos Spectrometer at MAMI
Creators: name: Achenbach, P.
name: Gayoso, C. Ayerbe
name: Bernauer, J. C.
name: Böhm, R.
name: Bosnar, D.
name: Debenjak, L.
name: Distler, M. O.
name: Esser, A.
name: Friščić, I.
name: de la Paz, M. Gómez Rodríguez
name: Hoffmann, J.
name: Makek, M.
name: Merkel, H.
name: Minami, S.
name: Müller, U.
name: Nungesser, L.
name: Ott, W.
name: Pochodzalla, J.
name: Potokar, M.
name: Rusanov, I.
name: Saito, T. R.
name: Majos, S. Sánchez
name: Schlimme, B. S.
name: Širca, S.
name: Voltz, S.
name: Weindel, K.
name: Weinriefer, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The Kaos spectrometer is maintained by the A1 collaboration at the Mainz Microtron MAMI with a focus on the study of (e,e'K^+) coincidence reactions. For its electron-arm two vertical planes of fiber arrays, each comprising approximately 10 000 fibers, are operated close to zero degree scattering angle and in close proximity to the electron beam. A nearly dead-time free DAQ system to acquire timing and tracking information has been installed for this spectrometer arm. The signals of 144 multi-anode photomultipliers are collected by 96-channel front-end boards, digitized by double-threshold discriminators and the signal time is picked up by state-of-the-art F1 time-to-digital converter chips. In order to minimize background rates a sophisticated trigger logic was implemented in newly developed Vuprom modules. The trigger performs noise suppression, signal cluster finding, particle tracking, and coincidence timing, and can be expanded for kinematical matching (e'K^+) coincidences. The full system was designed to process more than 4 000 read-out channels and to cope with the high electron flux in the spectrometer and the high count rate requirement of the detectors. It was successfully in-beam tested at MAMI in 2009.
description: Contributed to 17th IEEE Real Time Conference (RT10), Lisbon, 24-28 May 2010
title: Terrestrial and marine risks for leach's storm-petrels during the breeding season
Creators: name: Collins, Sydney M.
Publisher: name: Memorial University of Newfoundland
Year: 2021

description: Globally, seabirds are in decline, so comprehensive efforts are needed to understand risks facing these species. Leach’s Storm-Petrels are globally identified as ‘Threatened’, and my thesis addresses two factors which pose risk during the breeding season for the population breeding at Gull Island, Newfoundland: predation and light attraction. Chapter 2 investigates activity associations between breeding storm-petrels and nearby predatory Herring Gulls to gauge predation risk. Herring Gull activity was negatively associated with, and was the most important predictor of, Leach’s Storm-Petrel activity, suggesting that storm-petrels modify their colony activity in response to their top predator. Chapter 3 examines foraging tracks of parental storm-petrels to assess risk from light attraction to offshore oil platforms. This population of storm-petrels was consistent in foraging trip duration, distance, behaviour, and location. They transited past oil platforms during the day, thereby minimising risk. Breeding season risks from predation and light attraction are minimised by existing constraints on behaviour, so future research should focus on other risks to adults along with the juvenile and immature phases of the life cycle. Overall, I demonstrate that a comprehensive examination of risks facing seabirds throughout their life cycle is vital for informing effective mitigation efforts.
The impact of shear rate and prolonged sitting on endothelial function in children
Creators: name: Armstrong, Victoria
Publisher: name: University of British Columbia
Year: 2017

description: Prolonged sitting has been shown to impair endothelial function in children, yet the mechanisms underlying this remain unclear. In adults, there is a decline in endothelial function, indexed using flow-mediated dilation (FMD), after 1 hour of sitting. When localized heating was used to increase shear stress, the sitting-induced reduction in FMD can be prevented, confirming this decline was shear-stress mediated. The relationship between FMD and shear stress is weaker in children and whether limb heating increases shear stress and FMD in children is unknown. We therefore examined the time-course of changes in FMD with sitting and whether increasing shear stress during sitting would prevent reductions in FMD. Sixteen children completed measurements of superficial femoral artery (SFA) FMD in both legs before and after a 3-hour sitting period, with a subgroup of 7 children completing additional measures after 1 and 2 hours of sitting. In one leg, the calf was heated with an electronic heat pad at 42°C (i.e. heated condition), while the contralateral leg served as an internal control (i.e., non-heated condition). Heart rate and blood pressure were unchanged throughout the 3 hours confirming the heating was localized. Following 3 hours of sitting, antegrade shear rate was unchanged in the non-heated leg (pre-sit: 102.0 ±43.7 s-¹, 3 hr sit: 126 ±40.1 s-¹; P>0.05), but increased significantly in the heated leg (pre-sit:102.2 ±33.6 s-¹, 3 hr sit: 216.2 ±47.3 s-¹; P<0.05). FMD was not altered in either heated or unheated legs. In the subset, there was no significant main effect for time or interaction for corrected FMD; however, there was some indication of an increase in FMD in the heated leg after three hours of sitting. To conclude, we show that sitting for three hours did not reduced FMD. Passive limb heating increased blood flow and shear stress, but did not have a consistent impact on FMD.
Fluorescent Imaging of pH with Optical Sensors Using Time Domain Dual Lifetime Referencing
Creators: name: Liebsch, Gregor
name: Klimant, Ingo
name: Krause, Christian
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 2001
Subjects: subject: 540 Chemie

description: We present a referenced scheme for fluorescence intensity measurements that is useful for imaging applications. It is based on the conversion of the fluorescence intensity information into a time-dependent parameter. A phosphorescent dye is added in the form of 10-μm particles to the sample containing the pH-sensitive fluorescent indicator. Both the reference dye and the pH probe are excited simultaneously by a blue LED, and an overall luminescence is measured. In the time-resolved imaging method presented here, two images taken at different time gates were recorded using a CCD camera. The first image is recorded during excitation and reflects the luminescence signal of both the fluorophore (pH) and the phosphor (reference). The second image, which is measured after a certain delay (after switching off the light source), is solely caused by the long-lived phosphorescent dye. Because the intensity of the fluorophore contains the information on pH, whereas phosphorescence is pH-independent, the ratio of the images displays a referenced intensity distribution that reflects the pH at each picture element (pixel). The scheme is useful for LED light sources and CCD cameras that can be gated with square pulses in the microsecond range. The fundamentals and potential of this new method, to which we refer as time domain dual lifetime referencing (t-DLR), are demonstrated.
Assembly and extracellular release of chimeric HIV-1 Pr55gag retrovirus-like particles
Creators: name: Wagner, R.
name: Deml, Ludwig
name: Fliessbach, H.
name: Wanner, G.
name: Wolf, Hans J.
Publisher: name: Universität Regensburg
Year: 1994
Subjects: subject: 610 Medizin
subject: Amino Acid Sequence
subject: Base Sequence
subject: DNA Mutational Analysis
subject: Epitopes/metabolism
subject: Gene Products, gag/metabolism
subject: HIV Envelope Protein gp120/immunology
subject: HIV-1/ultrastructure
subject: Molecular Sequence Data
subject: Mutation
subject: Protein Precursors/metabolism
subject: Recombinant Fusion Proteins/metabolism
subject: Vaccinia virus/ultrastructure
subject: Virion/ultrastructure

description: The HIV-1 Pr55gag precursors were previously shown to assemble and bud from a variety of different cell types as noninfectious virus-like particles (VLPs) resembling immature HIV virions. The use of these VLPs as an immunogenic and autologous carrier component may allow the presentation of defined epitopes deduced from reading frames other than gag to the immune system, thereby avoiding the induction of adverse immune responses. In order to identify domains within Pr55gag that can be replaced by immunologically relevant epitopes without affecting its capacity to assemble into VLPs, we deleted three domains of a predicted high surface probability. Deletion of amino acids 211-241 within p24CA and amino acids 436-471 within the p6LI portion of Pr55gag had no effect on the assembly, ultrastructure, biophysical properties, and yields of mutant VLPs when expressed via recombinant vaccinia viruses in mammalian cells. Deletion of amino acids 99-154 overlapping the p17MA/p24CA cleavage site completely abolished the capacity of the gag polyprotein to form VLPs and led to a reduction of immature Pr55 VLPs released into the cell-culture supernatants when coexpressed with wild-type Pr55gag. In contrast, assembly and budding of chimeric VLPs could be demonstrated after replacing amino acids 211-241 and 436-471 by immunologically relevant epitopes derived from reading frames other than Pr55gag (e.g., V3 loop; CD4-binding-domain; nef-CTL epitope) or after fusion of these sequences to the carboxy terminus of Pr55gag. The importance of these data for the development of novel HIV candidate vaccines is discussed.
description: Erratum in: Virology 1994 Jun;201(2):424
Identification of a protein encoded in the EB-viral open reading frame BMRF2
Creators: name: Modrow, Susanne
name: Höflacher, B.
name: Wolf, Hans J.
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 610 Medizin
subject: Amino Acid Sequence
subject: Antigens, Viral/genetics
subject: Genes, Viral
subject: Herpesvirus 4, Human/immunology
subject: Membrane Glycoproteins/immunology
subject: Molecular Sequence Data
subject: Oligopeptides/immunology
subject: Open Reading Frames
subject: Viral Proteins/immunology
subject: Viral Structural Proteins/genetics

description: Using monospecific rabbit sera against a peptide derived from a potential antigenic region of the Epstein-Barr viral amino acid sequence encoded in the open reading frame BMRF2 we could identify a protein-complex of 53/55 kDa in chemically induced B95-8, P3HR1 and Raji cell lines. This protein could be shown to be membrane-associated, as predicted by previous computer analysis of the secondary structure and hydrophilicity pattern, and may be a member of EBV-induced membrane proteins in lytically infected cells.
Personalization and Adaptation in Physical Human-Robot Interaction
Creators: name: Gopinathan, Sugeeth
Publisher: name: Universität Bielefeld
Year: 2019
Subjects: subject: 620

description: Recent advancements in physical human-robot interaction (pHRI) makes it possible for compliant robots to assist the human counterpart while closely working together. An ideal control mode designed for pHRI should be easy to handle, intuitive to use, ergonomic and adaptive to human habits and preferences. The major stumbling block in achieving this is that each user has varying physical capabilities and characteristics. This variance in the user behavior and other features is often high and rather unpredictable, which hinders the development of such systems. To tackle this problem, the idea of personalized adaptive stiffness control for pHRI is introduced in this thesis. Extensive user-studies are conducted in scope of this thesis and various control modes for pHRI are proposed and evaluated using appropriate user-studies. Both naive and expert users were considered in the user-studies and inferences from each study were used to improve the control mode to be better suited for pHRI.
 The thesis follows a meticulous research plan, an initial user-study confirms the im- portance of pHRI and kinesthetic guidance in industrial tasks. Subsequently, the user interactive force based adaptation is proposed and a second user-study is conducted where it is compared with standard control modes for pHRI. Importance of task specific param- eters and the need for combining the task and human factors emerged from the results of the second user-study. In the next phase manipulability based approaches which com- bine both task and human parameters are proposed and validated by conducting a third user-study. In the final phase a fourth user-study is conducted where the proposed con- trol modes are compared against more complex methods that have been proposed in the literature.
 The importance of human physical factors and needs for human centered systems for pHRI is validated in this thesis. The results show that including these human factors not only improve the performance but also improves the interaction quality and reduces the complexity of the pHRI.
Novel chloride-selective optode based on polymer-stabilised emulsions doped with a lipophilic fluorescent polarity-sensitive dye
Creators: name: Huber, Christian
name: Werner, Tobias
name: Krause, Christian
name: Wolfbeis, Otto S.
Publisher: name: Universität Regensburg
Year: 1999
Subjects: subject: 540 Chemie

description: A chloride-selective optode is presented which is based on a polymer-stabilised emulsion system consisting of a hydrogel with entrapped plasticizer droplets. The droplets contain a neutral chloride-selective ionophore and a polarity-sensitive cationic fluorescent dye (PSD) located near the droplet surface. The ionophore extracts chloride out of the aqueous solution through the hydrogel into the plasticizer droplets, followed by a displacement of the positively charged PSD into the plasticizer droplet. This concerted process causes a decrease of micro-polarity near the dye, resulting in a dramatic increase in its fluorescence intensity. The sensing scheme can be used for reversible sensing of chloride in the 1–80 mM concentration range with response times on the order of less than 3 min. The sensor membrane has been investigated in terms of signal change, stability, limits of detection and selectivity for the analyte over interferents.
Anticholinesterase activity and metabolite profiling of Syagrus romanzoffiana (Cham.) Glassman leaves and fruits via UPLC–QTOF–PDA–MS
Creators: name: El-Hawary, Seham S.
name: Fathy, Fify I.
name: Sleem, Amany A.
name: Morsy, Fatma A.
name: Khadar, Mai S.
name: Mansour, Mai K.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: The purpose of this study is to provide a complete metabolic profile of the hydroalcoholic extracts of the leaves and fruits of Syagrus romanzoffiana (Cham.) Glassman via UPLC–QTOF–PDA–MS and to evaluate their anticholinesterase activities in a model of Alzheimer disease. The current study has identified 39 metabolites belonging to various chemical classes (i.e. flavonols, phenolic acids, fatty acids, stilbenoids and lignans). While the fatty acids predominated in both leaves and fruits, the stilbenoids were more predominant in leaves. Their neuroprotective effect was comparable to Aricept; the standard drug used in treatment of Alzheimer disease. Both extracts significantly decreased the acetylcholinesterase activity and improved the histopathological changes in the cerebral cortex and cerebellum of rat model of aluminium chloride-induced Alzheimer disease. In light of the current study, Syagrus romanzoffiana (Cham.) Glassman is recommended as promising candidate for palliative treatment in Alzheimer disease through inhibition of the acetylcholinesterase activity.
Norma Edwards' Greeting Card
Creators: name: Edwards, Norma
name: Springs Historical Society
Publisher: name: Unknown
Year: 0
Subjects: East Hampton
Springs
Edwards Family
Greeting cards
Flowers
Daisies
Dog walking

description: Holiday greeting card from Norma Edwards, Lily, Uncle Dan. Featured on the card is two images; one of Norma with a dog and the other is of a butterfly resting on a bed of daisies.
description: This material was lent to the Long Island Collection by the Springs Historical Society Library for digitization purposes.
Polarography as a technique of choice for the evaluation of total antioxidant activity: The case study of selected Coprinus Comatus extracts and quinic acid, their antidiabetic ingredient
Creators: name: Karaman, Maja
name: Tesanovic, Kristina
name: Gorjanovic, Stanislava
name: Pastor, Ferenc T.
name: Simonovic, Mladen
name: Glumac, Miodrag
name: Pejin, Boris
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Biotechnology
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: Ecology
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: Plant Biology

description: This study was focused on in vitro screening of the total antioxidant activity of the selected extracts of the mushroom Coprinus comatus and quinic acid, one of their antidiabetic ingredients, by an uncommon electrochemical assay. Indeed, direct current (DC) polarographic HydroxoPerhydroxo Mercury(II) Complex (HPMC) assay based on decrease of anodic limiting current originating from HPMC formation in alkaline solutions of hydrogen peroxide at potential of mercury dissolution, observed upon gradual addition of antioxidants, was applied herein for the estimation of the natural products' antioxidativity. Quinic acid was found to exhibit most promising antioxidant potential (4.0 ± 0.2%µL−1) being ≈ 2-fold more active than the screened C. comatus extract samples. Actually, such a finding puts some light on the antioxidativity of cyclic polyols, well understimated class of organic compounds, compared to aromatic (poly)phenolics. As a low cost, easy-to handle and accurate this polarographic assay may be thoroughly recommended for much broader use.
Phytotoxic and antioxidant effects of dichloromethane fraction of Smilax Brasiliensis Sprengel
Creators: name: Barbosa, Myriam Almeida
name: Fonseca, Juliana Costa
name: Ferraz, Vany
name: Castro, Ana Hortência Fonsêca
name: Lima, Luciana Alves Rodrigues dos Santos
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Hematology

description: Dichloromethane (DCM) fraction and sub-fractions obtained from Smilax brasiliensis leaves were examined in order to determine their phytotoxic and antioxidant effects. The dichloromethane fraction was submitted to a preparative layer chromatography leading to seven sub-fractions (DCM1-DCM7). Gas chromatography-mass spectrometry (GC-MS) was performed on the dichloromethane sub-fractions. The DCM sub-fractions presented phytotoxic potential; at a concentration of 125 µg per plate, DCM6 and DCM4 showed the strongest results on Lactuca sativa and Allium cepa, respectively. The DCM fraction and DCM4 sub-fraction were more effective than 2,6-di-tert-butyl-4-methylphenol (BHT) at scavenging the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical. Analysis by GC-MS showed the presence of methyl palmitate (33.05%) in DCM4 and methyl palmitate (17.29%) and methyl oleate (50.96%) in DCM6, suggesting that the activities exhibited by the sub-fractions may be attributed, at least partially, to these major compounds. These results indicate that the DCM sub-fractions of S. brasiliensis could be used as natural herbicides and antioxidants.
Cold uniform spherical collapse revisited
Creators: name: Joyce, M.
name: Marcos, B.
name: Labini, F. Sylos
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report results of a study of the Newtonian dynamics of N self-gravitating particles which start in a quasi-uniform spherical configuration, without initial velocities. These initial conditions would lead to a density singularity at the origin at a finite time when N \rightarrow \infty, but this singularity is regulated at any finite N (by the associated density fluctuations). While previous studies have focussed on the behaviour as a function of N of the minimal size reached during the contracting phase, we examine in particular the size and energy of the virialized halo which results. We find the unexpected result that the structure decreases in size as N increases, scaling in proportion to N^{-1/3}, a behaviour which is associated with an ejection of kinetic energy during violent relaxation which grows in proportion to N^{1/3}. This latter scaling may be qualitatively understood, and if it represents the asymptotic behaviour in N implies that this ejected energy is unbounded above. We discuss also tests we have performed which indicate that this ejection is a mean-field phenomenon (i.e. a result of collisionless dynamics).
description: 10 pages, 9 figures; proceedings of "Invisible Universe" conference, Paris, July 2009