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Search Results: 1 - 10 of 141 matches for " Randolph Moellenberg "
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The Physics Potential of the LENA Detector
Michael Wurm,Franz von Feilitzsch,Marianne Goeger-Neff,Tobias Lachenmaier,Timo Lewke,Quirin Meindl,Randolph Moellenberg,Lothar Oberauer,Juha Peltoniemi,Walter Potzel,Marc Tippmann,Juergen Winter
Physics , 2010,
Abstract: The large-volume liquid-scintillator detector LENA (Low Energy Neutrino Astronomy) has been proposed as a next-generation experiment for low-energy neutrinos. High-precision spectroscopy of solar, Supernova and geo-neutrinos provides a new access to the otherwise unobservable interiors of Earth, Sun and heavy stars. Due to the potent background discrimination, the detection of the Diffuse Supernova Neutrino Background is expected for the first time in LENA. The sensitivity of the proton lifetime for the decay into Kaon and antineutrino will be increased by an order of magnitude over existing experimental limits. Recent studies indicate that liquid-scintillator detectors are capable to reconstruct neutrino events even at GeV energies, providing the opportunity to use LENA as far detector in a long-baseline neutrino beam experiment.
El hispanismo dionisíaco
Olivar , 2008,
Abstract: literary history conveys the history of enthusiasm that some authors have experienced for others ?rousseau for buffon, zorrilla for larra? but dionysian passion has been tempered by apollo's discipline, which has replaced admiration for knowledge, and conversation for examination. i suggest the need of retrieving the pleasure of literature and dionysus's feast.
Digital Divide: relex es sobre novas formas de exclus o social
Randolph Lima
Geografares , 2000,
Abstract: O trabalho trata sobre a “digital divide”, ou “cis odigital”, compreendida como a distribui o desigualdo acesso às tecnologias de informa o e comunica- o tanto entre diferentes sociedades como no interior de cada uma. Apresenta inicialmente uma reflex o sobre a “exclus o”, seguida por discuss oconceitual sobre os principais fen menos atribuídosà “cis o digital”; para, finalmente, identificar provisoriamente algumas limita es – dada a “qualidadeestratégica” das mudan as que se imaginam sob otítulo do “digital divide” – das abordagens da “teoria da exclus o”.
Mechanical ventilation in severe asthma
Randolph P Cole
Critical Care , 2005, DOI: 10.1186/cc3925
Abstract: The author(s) declare that they have no competing interests.
Metal Dispersion Resulting from Mining Activities in Coastal Environments: A Pathways Approach
Randolph A. Koski
Oceanography , 2012,
Abstract: Acid rock drainage (ARD) and disposal of tailings that result from mining activities impact coastal areas in many countries. The dispersion of metals from mine sites that are both proximal and distal to the shoreline can be examined using a pathways approach in which physical and chemical processes guide metal transport in the continuum from sources (sulfide minerals) to bioreceptors (marine biota). Large amounts of metals can be physically transported to the coastal environment by intentional or accidental release of sulfide-bearing mine tailings. Oxidation of sulfide minerals results in elevated dissolved metal concentrations in surface waters on land (producing ARD) and in pore waters of submarine tailings. Changes in pH, adsorption by insoluble secondary minerals (e.g., Fe oxyhydroxides), and precipitation of soluble salts (e.g., sulfates) affect dissolved metal fluxes. Evidence for bioaccumulation includes anomalous metal concentrations in bivalves and reef corals, and overlapping Pb isotope ratios for sulfides, shellfish, and seaweed in contaminated environments. Although bioavailability and potential toxicity are, to a large extent, functions of metal speciation, specific uptake pathways, such as adsorption from solution and ingestion of particles, also play important roles. Recent emphasis on broader ecological impacts has led to complementary methodologies involving laboratory toxicity tests and field studies of species richness and diversity.
Gender comparison in a murine model of allergen-driven airway inflammation and the response to budesonide treatment
Corteling Randolph,Trifilieff Alexandre
BMC Pharmacology , 2004, DOI: 10.1186/1471-2210-4-4
Abstract: Background Evidence suggests that gender differences exist in the severity of many immunological diseases and their response to glucocorticosteroid treatment. In this report, we have used a murine model of ovalbumin-induced lung inflammation to address whether gender could affect the systemic response, airway inflammation and hyperreactivity and their responses to budesonide. Results Following an acute ovalbumin challenge, actively sensitised BALB/c mice developed a time-dependent increase in interleukin-4 and interleukin-5 production and inflammatory cell influx into bronchoalveolar lavage fluid. Apart from an increased number of lymphocytes in female mice at day 3 post-challenge, none of the above parameters were affected by gender. Blood leukocyte numbers were also unaffected, whereas a two-fold increase in total serum immunoglobulin E was observed in female mice. Budesonide, given intranasally, did not affect the blood parameters, but dose-dependently inhibited the pulmonary inflammation and airway hyperreactivity in both male and female mice. Female mice were slightly less sensitive to budesonide's inhibitory action on interleukin-5 production and the development of airway hyperreactivity. Conclusions Our results suggest that, apart from a 2-fold increase in serum immunoglobulin E levels observed in female mice, gender is not a major factor in the present murine model of ovalbumin-induced lung inflammation. In contrast, gender might slightly influence the potency of test compounds such as steroids.
Potentials for Mutually Beneficial Collaboration Between FIA Specialists and IEG-40 Pathologists and Geneticists Working on Fusiform Rust
Ellis Cowling,KaDonna Randolph
Forests , 2013, DOI: 10.3390/f4041220
Abstract: The purpose of this article is to encourage development of an enduring mutually beneficial collaboration between data and information analysts in the US Forest Service’s “Enhanced Forest Inventory and Analysis (FIA) Program” and forest pathologists and geneticists in the information exchange group (IEG) titled “Genetics and Breeding of Southern Forest Trees.” The goal of this collaborative partnership is to take full advantage of the Forest Health Monitoring capabilities within the Enhanced FIA Program to provide up-to-date information on the incidence of fusiform rust on loblolly and slash pine stands in the Southern United States and to periodically report the status of the rust epidemic in this region. Our initial analysis of 2000–2011 FIA data demonstrates that careful analysis and interpretation of results from continuing FIA observations can provide valuable guidance for optimizing the performance of forest tree improvement programs in this region.
A Note on the Regularity of the Solutions to Two Variational Inequalities Involving a Pseudodifferential Operator
Randolph G. Cooper Jr. III
International Journal of Mathematics and Mathematical Sciences , 2007, DOI: 10.1155/2007/95738
Abstract: The regularity of solutions to variational inequalities involving local operators has been studied extensively. Less attention has been paid to those involving nonlocal pseudodifferential operators. We present two regularity resultsfor such problems.
Estimating Biophysical Parameters of Individual Trees in an Urban Environment Using Small Footprint Discrete-Return Imaging Lidar
Rupesh Shrestha,Randolph H. Wynne
Remote Sensing , 2012, DOI: 10.3390/rs4020484
Abstract: Quantification of biophysical parameters of urban trees is important for urban planning, and for assessing carbon sequestration and ecosystem services. Airborne lidar has been used extensively in recent years to estimate biophysical parameters of trees in forested ecosystems. However, similar studies are largely lacking for individual trees in urban landscapes. Prediction models to estimate biophysical parameters such as height, crown area, diameter at breast height, and biomass for over two thousand individual trees were developed using best subsets multiple linear regression for a study area in central Oklahoma, USA using point cloud distributional metrics from an Optech ALTM 2050 lidar system. A high level of accuracy was attained for estimating individual tree height (R2 = 0.89), dbh (R2 = 0.82), crown diameter (R2 = 0.90), and biomass (R2 = 0.67) using lidar-based metrics for pooled data of all tree species. More variance was explained in species-specific estimates of biomass (R2 = 0.68 for Juniperus virginiana to 0.84 for Ulmus parviflora) than in estimates from broadleaf deciduous (R2 = 0.63) and coniferous (R2 = 0.45) taxonomic groups—or the data set analysed as a whole (R2 = 0.67). The metric crown area performed particularly well for most of the species-specific biomass equations, which suggests that tree crowns should be delineated accurately, whether manually or using automatic individual tree detection algorithms, to obtain a good estimation of biomass using lidar-based metrics.
Heidi J. Swarts, Organizing Urban America: Secular and Faith-based Progressive Movements
Randolph Brent Haluza-DeLay
The Canadian Journal of Sociology , 2010,
Abstract: Book Review
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