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Sample records for krista leppik helis

  1. Arnold Hely and Australian Adult Education

    ERIC Educational Resources Information Center

    Morris, Roger

    2011-01-01

    Arnold Hely (1907-1967) was a most significant figure in the history of adult education in New Zealand, in Australia and internationally. Arnold Hely, a New Zealander, Director of Tutorial Classes (later Adult Education) at the University of Adelaide from 1957 to 1965, was the prime mover in the establishment in 1964 of the Asian South Pacific…

  2. Operation Heli-STAR - Atlanta Communications Experiment (ACE). Volume 9

    NASA Technical Reports Server (NTRS)

    1996-01-01

    Operation Heli-STAR (Helicopter Short-Haul Transportation and Aviation Research) was established and operated in Atlanta, Georgia, during the period of the 1996 Centennial Olympic Games. Heli-STAR had three major thrusts: (1) the establishment and operation of a helicopter-based cargo transportation system, (2) the management of low-altitude air traffic in the airspace of an urban area, and (3) the collection and analysis of research and development data associated with items 1 and 2. Heli-STAR was a cooperative industry/government program that included parcel package shippers and couriers in the Atlanta area, the helicopter industry, aviation electronics manufacturers, the Federal Aviation Administration (FAA), the National Aeronautics and Space Administration (NASA), and support contractors. Several detailed reports have been produced as a result of Operation Heli-STAR. These include four reports on acoustic measurements and associated analyses, and reports on the Heli-STAR tracking data including the data processing and retrieval system, the Heli-STAR cargo simulation, and the community response system. In addition, NASA's Advanced General Aviation Transport Experiments (AGATE) program has produced a report describing the Atlanta Communications Experiment (ACE) which produced the avionics and ground equipment using automatic dependent surveillance-broadcast (ADS-B) technology. This latter report is restricted to organizations belonging to NASA's AGATE industry consortium. A complete list of these reports is shown on the following page.

  3. Operation Heli-STAR - Atlanta Communications Experiment (ACE). Volume 9

    NASA Technical Reports Server (NTRS)

    1996-01-01

    Operation Heli-STAR (Helicopter Short-Haul Transportation and Aviation Research) was established and operated in Atlanta, Georgia, during the period of the 1996 Centennial Olympic Games. Heli-STAR had three major thrusts: (1) the establishment and operation of a helicopter-based cargo transportation system, (2) the management of low-altitude air traffic in the airspace of an urban area, and (3) the collection and analysis of research and development data associated with items 1 and 2. Heli-STAR was a cooperative industry/government program that included parcel package shippers and couriers in the Atlanta area, the helicopter industry, aviation electronics manufacturers, the Federal Aviation Administration (FAA), the National Aeronautics and Space Administration (NASA), and support contractors. Several detailed reports have been produced as a result of Operation Heli-STAR. These include four reports on acoustic measurements and associated analyses, and reports on the Heli-STAR tracking data including the data processing and retrieval system, the Heli-STAR cargo simulation, and the community response system. In addition, NASA's Advanced General Aviation Transport Experiments (AGATE) program has produced a report describing the Atlanta Communications Experiment (ACE) which produced the avionics and ground equipment using automatic dependent surveillance-broadcast (ADS-B) technology. This latter report is restricted to organizations belonging to NASA's AGATE industry consortium. A complete list of these reports is shown on the following page.

  4. 76 FR 16462 - In the Matter of Heli Electronics Corp., Order of Suspension of Trading

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-23

    ... From the Federal Register Online via the Government Publishing Office SECURITIES AND EXCHANGE COMMISSION In the Matter of Heli Electronics Corp., Order of Suspension of Trading March 21, 2011. It appears... concerning the securities of Heli Electronics Corp. (``HELI''), a Nevada corporation with headquarters...

  5. The "spotlight" ... highlighting researchers at work: Krista Gebert: "The beauty of economics"

    Treesearch

    Sharon Ritter

    2008-01-01

    Economics is the science of allocating scarce resources among unlimited wants." That was Krista Gebert's response when I asked her to define economics for me. Having taught several economics classes at the University of Montana after graduate school, Krista had the definition down to its essence. As an economist with RMRS in Missoula, Krista applies economics...

  6. 14 CFR 77.29 - Airport imaginary surfaces for heli-ports.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 2 2011-01-01 2011-01-01 false Airport imaginary surfaces for heli-ports. 77.29 Section 77.29 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Standards § 77.29 Airport imaginary surfaces for heli-ports. (a) Heliport primary surface. The area of the...

  7. Case histories illustrating the characteristics of the HeliGEOTEM system

    NASA Astrophysics Data System (ADS)

    Smith, Richard S.; Hodges, Greg; Lemieux, Jean

    2009-09-01

    The HeliGEOTEM system was introduced in 2005 to provide higher resolution data than fixed-wing electromagnetic (EM) systems. The characteristics of HeliGEOTEM are illustrated by comparing the system with other airborne EM systems. A comparison with previous versions of HeliGEOTEM shows that, since 2005, the early-time information has improved allowing rapidly decaying responses to be identified. An improvement in the signal-to-noise ratio means the system is able to detect bodies at greater depth. A height attenuation test over the Nighthawk conductive body indicates that the latest system could see that target if it were buried 380m below surface. Another target that is difficult to detect (Caber) is clearly seen on the HeliGEOTEM data. A comparison of field data at the Maimon deposit indicates that the helicopter DIGHEM frequency-domain system and the HeliGEOTEM time-domain system both acquire data with similar spatial wavelengths. Data collected away from the main ore body and along strike indicate that the HeliGEOTEM sees a less attenuated response from a deeper part of the body. Also, the HeliGEOTEM is able to estimate the conductivity, whereas the DIGHEM system cannot discriminate the conductance, it can only indicate that the body is highly conductive. The DIGHEM data, however, is better able to resolve the near-surface conductivity, and the spatial form of the DIGHEM data is simpler. The data acquired with multiple transmitter-receiver coil pairs (DIGHEM and HeliGEOTEM) provides information superior to single-component data. Tools used to display fixed-wing airborne EM data have been modified to work with HeliGEOTEM data. These tools can image the structure in cases where the ground is assumed to be comprised of a) horizontal layers or b) discrete conductors. A comparison of HeliGEOTEM with the helicopter RESOLVE and fixed-wing GEOTEM systems shows that the HeliGEOTEM is able to map most of the shallow features seen on the RESOLVE and to image the

  8. HELI-DEM portal for geo-processing services

    NASA Astrophysics Data System (ADS)

    Cannata, Massimiliano; Antonovic, Milan; Molinari, Monia

    2014-05-01

    HELI-DEM (Helvetia-Italy Digital Elevation Model) is a project developed in the framework of Italy/Switzerland Operational Programme for Trans-frontier Cooperation 2007-2013 whose major aim is to create a unified digital terrain model that includes the alpine and sub-alpine areas between Italy and Switzerland. The partners of the project are: Lombardy Region, Piedmont Region, Polytechnic of Milan, Polytechnic of Turin and Fondazione Politecnico from Italy; Institute of Earth Sciences (SUPSI) from Switzerland. The digital terrain model has been produced by integrating and validating the different elevation data available for the areas of interest, characterized by different reference frame, resolutions and accuracies: DHM at 25 m resolution from Swisstopo, DTM at 20 m resolution from Lombardy Region, DTM at 5 m resolution from Piedmont Region and DTM LiDAR PST-A at about 1 m resolution, that covers the main river bed areas and is produced by the Italian Ministry of the Environment. Further results of the project are: the generation of a unique Italian Swiss geoid with an accuracy of few centimeters (Gilardoni et al. 2012); the establishment of a GNSS permanent network, prototype of a transnational positioning service; the development of a geo-portal, entirely based on open source technologies and open standards, which provides the cross-border DTM and offers some capabilities of analysis and processing through the Internet. With this talk, the authors want to present the main steps of the project with a focus on the HELI-DEM geo-portal development carried out by the Institute of Earth Sciences, which is the access point to the DTM outputted from the project. The portal, accessible at http://geoservice.ist.supsi.ch/helidem, is a demonstration of open source technologies combined for providing access to geospatial functionalities to wide non GIS expert public. In fact, the system is entirely developed using only Open Standards and Free and Open Source Software (FOSS

  9. Investigating potential effects of heli-skiing on golden eagles in the Wasatch Mountains, Utah

    Treesearch

    Teryl G. Grubb; David K. Delaney; William W. Bowerman

    2007-01-01

    Implementing further research was beyond the scope of the U.S. Forest Service's 2004 Final Environmental Impact Statement (FEIS) and 2005 Wasatch Powderbird Guides (WPG) Special Use Permit Renewal process for heli-skiing in the Tri-Canyon Area in the Wasatch Mountains, just east of Salt Lake City, Utah. However, in their Record of Decision the Wasaatch-Cache (WCNF...

  10. 14 CFR 77.29 - Airport imaginary surfaces for heli-ports.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Airport imaginary surfaces for heli-ports. 77.29 Section 77.29 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIRSPACE OBJECTS AFFECTING NAVIGABLE AIRSPACE Obstruction Standards § 77.29 Airport...

  11. Golden eagle indifference to heli-skiing and military helicopters in northern Utah

    Treesearch

    Teryl G. Grubb; David K. Delaney; William W. Bowerman; Michael R. Wierda

    2010-01-01

    In 2006-2007, during Wasatch Powderbird Guides (WPG) permit renewal for heli-skiing in the Tri-Canyon Area (TCA) of the Wasatch Mountains, Utah, USA, we recorded 303 helicopter passes between 0 m and 3,000 m (horizontal distance) near >30 individual golden eagles (Aquila chrysaetos) in 22 nesting territories, through passive observation and active experimentation...

  12. First principles determination of the bound levels of HeLi-

    NASA Astrophysics Data System (ADS)

    Backlund, Ben; Shih, Alex; Gellene, Gregory I.

    2004-12-01

    An analytical potential energy curve is developed from high quality ab initio calculations for the He+Li- interaction. The HeLi- electrostatic complex is found to have an Re of 18.5 bohrs and a De of 0.974 cm-1. Numerical solution of the rovibrational Schrödinger equation with this potential indicates two bound levels, (v,J)=(0,0) and (0,1), for all naturally occurring isotopologs (i.e., 4He7Li-, 4He6Li-, 3He7Li-, and 3He6Li-). For the common isotopolog, 4He7Li-, a D0 of 0.207 cm-1 and an R0 of 26.5 bohrs is determined.

  13. Improving proximal fixation and seal with the HeliFx Aortic EndoAnchor.

    PubMed

    Deaton, David H

    2012-12-01

    Endovascular aneurysm repair (EVAR) transformed the therapy for aortic aneurysms and introduced an era of widespread use for endovascular procedures in a variety of vascular beds. Although dramatic improvements in acute outcomes drove the early enthusiasm for EVAR, a realization that the long-term integrity of the endoprostheses used for EVAR were sometimes inferior to the results obtained with open surgical reconstruction dampened enthusiasm for their use in low-risk and younger patients who mandated long-term follow-up. While early EVAR failure modes are often related to technical aspects of the implantation, late failures are often related to the implant migrating from its original longitudinal position or losing wall apposition in the face of continued aneurysmal dilatation. Migration, or the failure of longitudinal fixation, results in gradual loss of aortic approximation and the eventual repressurization of the aneurysm sac with its attendant risks of growth and rupture. The inability of stent- and barb-based endovascular fixation to resist aortic dilatation at the site of fixation also represents a late failure mode that can result in aneurysm rupture. A variety of endostaples or endoanchors designed to replicate the function of an interrupted aortic suture have been proposed and tested to varying degrees over the years. The device designed and produced by Aptus EndoSystems, now called the HeliFx Aortic EndoAnchor is the only independent endovascular fixation device that has achieved significant clinical usage and Food and Drug Administration approval. The experience with this device is now more than 5 years and it is approved for use in the broad market across both Europe and the United States. This article will review the engineering and design concepts underlying the HeliFx device as well as the in vitro and in vivo results using this device. Finally, a discussion of the potential for technical, procedural, and endograft innovation based on the

  14. HeliCis: a DNA motif discovery tool for colocalized motif pairs with periodic spacing.

    PubMed

    Larsson, Erik; Lindahl, Per; Mostad, Petter

    2007-10-28

    Correct temporal and spatial gene expression during metazoan development relies on combinatorial interactions between different transcription factors. As a consequence, cis-regulatory elements often colocalize in clusters termed cis-regulatory modules. These may have requirements on organizational features such as spacing, order and helical phasing (periodic spacing) between binding sites. Due to the turning of the DNA helix, a small modification of the distance between a pair of sites may sometimes drastically disrupt function, while insertion of a full helical turn of DNA (10-11 bp) between cis elements may cause functionality to be restored. Recently, de novo motif discovery methods which incorporate organizational properties such as colocalization and order preferences have been developed, but there are no tools which incorporate periodic spacing into the model. We have developed a web based motif discovery tool, HeliCis, which features a flexible model which allows de novo detection of motifs with periodic spacing. Depending on the parameter settings it may also be used for discovering colocalized motifs without periodicity or motifs separated by a fixed gap of known or unknown length. We show on simulated data that it can efficiently capture the synergistic effects of colocalization and periodic spacing to improve detection of weak DNA motifs. It provides a simple to use web interface which interactively visualizes the current settings and thereby makes it easy to understand the parameters and the model structure. HeliCis provides simple and efficient de novo discovery of colocalized DNA motif pairs, with or without periodic spacing. Our evaluations show that it can detect weak periodic patterns which are not easily discovered using a sequential approach, i.e. first finding the binding sites and second analyzing the properties of their pairwise distances.

  15. Creation of a Multiresolution and Multiaccuracy Dtm: Problems and Solutions for Heli-Dem Case Study

    NASA Astrophysics Data System (ADS)

    Biagi, L.; Carcano, L.; Lucchese, A.; Negretti, M.

    2013-01-01

    The work is part of "HELI-DEM" (HELvetia-Italy Digital Elevation Model) project, funded by the European Regional Development Fund within the Italy-Switzerland cooperation program. The aim of the project is the creation of a unique DTM for the alpine and subalpine area between Italy (Piedmont, Lombardy) and Switzerland (Ticino and Grisons Cantons); at present, different DTMs, that are in different reference frames and have been obtained with different technologies, accuracies, and resolutions, have been acquired. The final DTM should be correctly georeferenced and produced validating and integrating the data that are available for the project. DTMs are fundamental in hydrogeological studies, especially in alpine areas where hydrogeological risks may exist. Moreover, when an event, like for example a landslide, happens at the border between countries, a unique and integrated DTM which covers the interest area is useful to analyze the scenario. In this sense, HELI-DEM project is helpful. To perform analyses along the borders between countries, transnational geographic information is needed: a transnational DTM can be obtained by merging regional low resolution DTMs. Moreover high resolution local DTMs should be used where they are available. To be merged, low and high resolution DTMs should be in the same three dimensional reference frame, should not present biases and should be consistent in the overlapping areas. Cross-validation between the different DTMs is therefore needed. Two different problems should be solved: the merging of regional, partly overlapping low and medium resolution DTMs into a unique low/medium resolution DTM and the merging with other local high resolution/high accuracy height data. This paper discusses the preliminary processing of the data for the fusion of low and high resolution DTMs in a study-case area within the Lombardy region: Valtellina valley. In this region the Lombardy regional low resolution DTM is available, with a horizontal

  16. Hyperspherical coupled channel calculations of energy and structure of 4He-4He-Li+ and its isotopic combinations

    NASA Astrophysics Data System (ADS)

    Liu, Min-min; Wu, Meng-Shan; Han, Hui-li; Shi, Ting-yun

    2016-07-01

    The ground state vibrational energy and spatial features of 4He-4He-Li+ and its triatomic isotopic complexes are studied using the slow variable discretization (SVD) method in the hyperspherical coordinates for the zero total angular momentum. Our results show that the dominant structure of the system is an isosceles triangle with the shorter side associated with the two Li+-He distances using the sum-of-potential approximation. Corrections caused by the induced dipole-induced dipole interactions on the He atoms are also investigated. The effects are seen to be small and have a minor influence on the binding energy and the structure of present system. The results are also compared with the full ab initio calculations including all the three-body interactions and information of three-body corrections is obtained.

  17. Redescription of two subterranean amphipods Niphargusmolnari Méhely, 1927 and Niphargusgebhardti Schellenberg, 1934 (Amphipoda, Niphargidae) and their phylogenetic position.

    PubMed

    Angyal, Dorottya; Balázs, Gergely; Zakšek, Valerija; Krízsik, Virág; Fišer, Cene

    2015-01-01

    A detailed redescription of two endemic, cave-dwelling niphargid species of the Hungarian Mecsek Mts., Niphargusmolnari Méhely, 1927 and Niphargusgebhardti Schellenberg, 1934 is given based on newly collected material. Morphology was studied under light microscopy and with scanning electon microscopy. Morphological descriptions are complemented with mitochondrial cytochrome c oxidase subunit I (COI) sequences as barcodes for both species and with notes on their ecology. Using three independent molecular markers we showed that Niphargusgebhardti belongs to the clade distributed between Central and Eastern Europe, whereas phylogenetic relationship of Niphargusmolnari to the rest of Niphargus species is not clear. The two species from the Mecsek Mts. are phylogenetically not closely related. Both species need to be treated as vulnerable according to IUCN Red List of Threatened Species.

  18. Heli(aza)cene: A Helical Molecular Tweezer with Tunable Intra- and Inter-molecular Charge Transfer.

    PubMed

    Srivastava, Aasheesh; Kumar, Rajesh; Semwal, Shrivats; Choudhury, Joyanta

    2017-09-07

    Non-planar fluorophores offer unique avenues of intra- and inter-molecular energy transfer not be available in their planar counterparts. We have rationally designed a molecular tweezer based on the pyridine-2,6-dicarboxamide framework having two structurally similar arms with extended -surface. We have termed this molecular tweezer as Heli(aza)cene (HAC) due to its spontaneous adoption of helical conformation stabilized by the amide and imine moieties present in it. In the helical conformation, the two arms of HAC are twisted unequally. This asymmetry confers dissimilar electronic character to the two arms and results in intramolecular charge transfer interactions in HAC. Homochiral stacking of the P- and the M- helices in crystal, and profound red-shifting of the emission at higher concentrations of HAC was attributed to inter-molecular charge transfer interactions in aggregated/crystal state. Exposure of HAC, in solution as well as solid state, to Lewis/Bronsted acids results in rapid and vibrant color changes. This is the first example of a -layered helical molecule exhibiting tunable intra-/inter-molecular charge transfer characteristics. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  19. One-year follow-up of a series of 100 patients treated for lumbar spinal canal stenosis by means of HeliFix interspinous process decompression device.

    PubMed

    Alexandre, Alberto; Alexandre, Andrea Maria; De Pretto, Mario; Corò, Luca; Saggini, Raul

    2014-01-01

    New interspinous process decompression devices (IPDs) provide an alternative to conservative treatment and decompressive surgery for patients with neurogenic intermittent claudication (NIC) due to degenerative lumbar spinal stenosis (DLSS). HeliFix is a minimally invasive IPD that can be implanted percutaneously. This is a preliminary evaluation of safety and effectiveness of this IPD up to 12 months after implantation. After percutaneous implantation in 100 patients with NIC due to DLSS, data on symptoms, quality of life, pain, and use of pain medication were obtained for up to 12 months. Early symptoms and physical function improvements were maintained for up to 12 months. Leg, buttock/groin, and back pain were eased throughout, and the use and strength of related pain medication were reduced. Devices were removed from 2% of patients due to lack of effectiveness. Overall, in a period of up to 12-month follow-up, the safety and effectiveness of the HeliFix offered a minimally invasive option for the relief of NIC complaints in a high proportion of patients. Further studies are undertaken in order to provide insight on outcomes and effectiveness compared to other decompression methods and to develop guidance on optimal patient selection.

  20. One-Year Follow-Up of a Series of 100 Patients Treated for Lumbar Spinal Canal Stenosis by Means of HeliFix Interspinous Process Decompression Device

    PubMed Central

    Alexandre, Alberto; Alexandre, Andrea Maria; De Pretto, Mario; Corò, Luca; Saggini, Raul

    2014-01-01

    Purpose. New interspinous process decompression devices (IPDs) provide an alternative to conservative treatment and decompressive surgery for patients with neurogenic intermittent claudication (NIC) due to degenerative lumbar spinal stenosis (DLSS). HeliFix is a minimally invasive IPD that can be implanted percutaneously. This is a preliminary evaluation of safety and effectiveness of this IPD up to 12 months after implantation. Methods. After percutaneous implantation in 100 patients with NIC due to DLSS, data on symptoms, quality of life, pain, and use of pain medication were obtained for up to 12 months. Results. Early symptoms and physical function improvements were maintained for up to 12 months. Leg, buttock/groin, and back pain were eased throughout, and the use and strength of related pain medication were reduced. Devices were removed from 2% of patients due to lack of effectiveness. Conclusions. Overall, in a period of up to 12-month follow-up, the safety and effectiveness of the HeliFix offered a minimally invasive option for the relief of NIC complaints in a high proportion of patients. Further studies are undertaken in order to provide insight on outcomes and effectiveness compared to other decompression methods and to develop guidance on optimal patient selection. PMID:24822181

  1. Redescription of two subterranean amphipods Niphargus molnari Méhely, 1927 and Niphargus gebhardti Schellenberg, 1934 (Amphipoda, Niphargidae) and their phylogenetic position

    PubMed Central

    Angyal, Dorottya; Balázs, Gergely; Zakšek, Valerija; Krízsik, Virág; Fišer, Cene

    2015-01-01

    Abstract A detailed redescription of two endemic, cave-dwelling niphargid species of the Hungarian Mecsek Mts., Niphargus molnari Méhely, 1927 and Niphargus gebhardti Schellenberg, 1934 is given based on newly collected material. Morphology was studied under light microscopy and with scanning electon microscopy. Morphological descriptions are complemented with mitochondrial cytochrome c oxidase subunit I (COI) sequences as barcodes for both species and with notes on their ecology. Using three independent molecular markers we showed that Niphargus gebhardti belongs to the clade distributed between Central and Eastern Europe, whereas phylogenetic relationship of Niphargus molnari to the rest of Niphargus species is not clear. The two species from the Mecsek Mts. are phylogenetically not closely related. Both species need to be treated as vulnerable according to IUCN Red List of Threatened Species. PMID:26175603

  2. Study of collective flows of protons and $ \\pi^{{-}}_{}$ π - -mesons in p+C, Ta and He+Li, C collisions at momenta of 4.2, 4.5 and 10 AGeV/c

    SciTech Connect

    Chkhaidze, L.; Chlachidze, G.; Djobava, T.; Galoyan, A.; Kharkhelauri, L.; Togoo, R.; Uzhinsky, V.

    2016-11-01

    Collective flows of protons and $\\pi^{-}$ -mesons are studied at the momenta of 4.2, 4.5 and 10AGeV/c for p+C, Ta and He+Li, C interactions. The data were obtained from the streamer chamber (SKM-200-GIBS) and from the Propane Bubble Chamber (PBC-500) systems utilized at JINR. A method of Danielewicz and Odyniec has been employed in determining a directed transverse flow of particles. The values of the transverse flow parameter and the strength of the anisotropic emission were defined for each interacting nuclear pair. It is found that the directed flows of protons and pions decrease with increasing the energy and the mass numbers of colliding nucleus pairs. The $ \\pi^{{-}}_{}$ -meson and proton flows exhibit opposite directions in all studied interactions, and the flows of protons are directed in the reaction plane. Lastly, the Ultra-relativistic Quantum Molecular Dynamical Model (UrQMD) coupled with the Statistical Multi-fragmentation Model (SMM), satisfactorily describes the obtained experimental results.

  3. Study of collective flows of protons and $$ \\pi^{{-}}_{}$$ π - -mesons in p+C, Ta and He+Li, C collisions at momenta of 4.2, 4.5 and 10 AGeV/c

    DOE PAGES

    Chkhaidze, L.; Chlachidze, G.; Djobava, T.; ...

    2016-11-01

    Collective flows of protons andmore » $$\\pi^{-}$$ -mesons are studied at the momenta of 4.2, 4.5 and 10AGeV/c for p+C, Ta and He+Li, C interactions. The data were obtained from the streamer chamber (SKM-200-GIBS) and from the Propane Bubble Chamber (PBC-500) systems utilized at JINR. A method of Danielewicz and Odyniec has been employed in determining a directed transverse flow of particles. The values of the transverse flow parameter and the strength of the anisotropic emission were defined for each interacting nuclear pair. It is found that the directed flows of protons and pions decrease with increasing the energy and the mass numbers of colliding nucleus pairs. The $$ \\pi^{{-}}_{}$$ -meson and proton flows exhibit opposite directions in all studied interactions, and the flows of protons are directed in the reaction plane. Lastly, the Ultra-relativistic Quantum Molecular Dynamical Model (UrQMD) coupled with the Statistical Multi-fragmentation Model (SMM), satisfactorily describes the obtained experimental results.« less

  4. Study of collective flows of protons and π^{{-}}_{} -mesons in p+C, Ta and He+Li, C collisions at momenta of 4.2, 4.5 and 10 AGeV/c

    NASA Astrophysics Data System (ADS)

    Chkhaidze, L.; Chlachidze, G.; Djobava, T.; Galoyan, A.; Kharkhelauri, L.; Togoo, R.; Uzhinsky, V.

    2016-11-01

    Collective flows of protons and π- -mesons are studied at the momenta of 4.2, 4.5 and 10AGeV/ c for p+C, Ta and He+Li, C interactions. The data were obtained from the streamer chamber (SKM-200-GIBS) and from the Propane Bubble Chamber (PBC-500) systems utilized at JINR. A method of Danielewicz and Odyniec has been employed in determining a directed transverse flow of particles. The values of the transverse flow parameter and the strength of the anisotropic emission were defined for each interacting nuclear pair. It is found that the directed flows of protons and pions decrease with increasing the energy and the mass numbers of colliding nucleus pairs. The π^{{-}}_{} -meson and proton flows exhibit opposite directions in all studied interactions, and the flows of protons are directed in the reaction plane. The Ultra-relativistic Quantum Molecular Dynamical Model (UrQMD) coupled with the Statistical Multi-fragmentation Model (SMM), satisfactorily describes the obtained experimental results.

  5. Next Generation HeliMag UXO Mapping Technology

    DTIC Science & Technology

    2009-10-01

    North area. The horizontal black line mark the auto-picker cut-off threshold used by the analyst. ...................... 51  Figure 25. Pseudo ROC...upper right) and simulated AMTADS data (lower right). The vertical black lines mark the auto-picker cut-off threshold...indicative of UXO contaminated impact areas. These grids are presented for visualization using a standard color stretch of 0-250 anomalies per

  6. Next Generation HeliMag UXO Mapping Technology

    DTIC Science & Technology

    2010-01-01

    density areas that are indicative of UXO- contaminated impact areas. These grids are presented for visualization using a standard color stretch of 0-250...anomalies per hectare. This color stretch has been found to be ideal for recognizing and delineating “high concentration” areas that are indicative...horizontal black line marks the auto-picker cutoff threshold used by the analyst. We can use the automatic target detection routine to sample

  7. Ultra-heavy vertical lift system: The Heli-Stat. [helicopter - airship combination for materials handling

    NASA Technical Reports Server (NTRS)

    Piasecki, F. N.

    1975-01-01

    A hybrid VTOL airship which is combined with helicopters is evaluated. The static lift of the airship supports approximately the full empty weight of the entire assembly. The helicopter rotors furnish the lift to support the payload as well as the propulsion and control about all axes. Thus existing helicopters, with no new technology required, can be made to lift payloads of ten times the capacity of each one alone, and considerably more than that of any airship built so far. A vehicle is described which has a 75-ton payload, based on four existing CH-53D helicopters and an airship of 3,600,000 cu. ft. The method of interconnection is described along with discussion of control, instrumentation, drive system and critical design conditions. The vertical lift and positioning capabilities of this vehicle far exceed any other means available today, yet can be built with a minimum of risk, development cost and time.

  8. Long-term stand growth after helicopter and ground-based skidding in a tupelo-cypress wetland: 21-year results

    Treesearch

    D.E. Evans; W.M. Aust; J.A. Peterson

    2013-01-01

    Three disturbance treatments were implemented on a tupelo-cypress forested wetland in southwestern Alabama on the Tensaw River in 1986: (1) clearcutting with helicopter log removal (HELI), (2) HELI followed by rubber-tired skidder traffic simulation (SKID), and (3) HELI followed by removal of all vegetation during the first two growing seasons via glyphosate herbicide...

  9. Examining Teacher Knowledge and Attitudes about School Issues for Children with Epilepsy: A Mixed-Method Investigation

    ERIC Educational Resources Information Center

    Roux, Amy Loomis

    2009-01-01

    Epilepsy is one of the most common diseases to affect the human nervous system, affecting approximately 0.5% of school-age children (Leppik, 2001; Kaleyias et al., 2005). Epilepsy has the potential to profoundly impact a child's adjustment to school. A large body of literature documents that children with epilepsy are at an increased risk for…

  10. Examining Teacher Knowledge and Attitudes about School Issues for Children with Epilepsy: A Mixed-Method Investigation

    ERIC Educational Resources Information Center

    Roux, Amy Loomis

    2009-01-01

    Epilepsy is one of the most common diseases to affect the human nervous system, affecting approximately 0.5% of school-age children (Leppik, 2001; Kaleyias et al., 2005). Epilepsy has the potential to profoundly impact a child's adjustment to school. A large body of literature documents that children with epilepsy are at an increased risk for…

  11. Advanced Control System Increases Helicopter Safety

    NASA Technical Reports Server (NTRS)

    2008-01-01

    With support and funding from a Phase II NASA SBIR project from Ames Research Center, Hoh Aeronautics Inc. (HAI), of Lomita, California, produced HeliSAS, a low-cost, lightweight, attitude-command-attitude-hold stability augmentation system (SAS) for civil helicopters and unmanned aerial vehicles. HeliSAS proved itself in over 160 hours of flight testing and demonstrations in a Robinson R44 Raven helicopter, a commercial helicopter popular with news broadcasting and police operations. Chelton Flight Systems, of Boise, Idaho, negotiated with HAI to develop, market, and manufacture HeliSAS, now available as the Chelton HeliSAS Digital Helicopter Autopilot.

  12. NIH Abroad: Inspiring the Next Generation of Global Health Researchers

    MedlinePlus

    ... surgery on a patient with cervical cancer in Zambia. Photo courtesy of Krista Pfaendler An innovative Fogarty ... Clinical Research Scholars Program spent a year in Zambia helping to build a cervical cancer screening and ...

  13. Is Infant Drug Withdrawal Likelier When Opioids Used with Psychiatric Drugs?

    MedlinePlus

    ... withdrawal, said lead researcher Krista Huybrechts. She's an assistant professor of medicine at Harvard Medical School. In ... one, she said. Dr. Stephen Patrick is an assistant professor of pediatrics and health policy at Vanderbilt ...

  14. A comparison between evacuation from the scene and interhospital transportation using a helicopter for subarachnoid hemorrhage.

    PubMed

    Ishikawa, Kouhei; Omori, Kazuhiko; Takeuchi, Ikuto; Jitsuiki, Kei; Yoshizawa, Toshihiko; Ohsaka, Hiromichi; Nakao, Yasuaki; Yamamoto, Takuji; Yanagawa, Youichi

    2017-04-01

    We investigated the changes in the vital signs and the final outcomes subarachnoid hemorrhage (SAH) patients who were evacuated from the scene using the doctor-helicopter (Dr. Heli) service and those who only underwent interhospital transportation using the doctor-helicopter Dr. Heli service to investigate safety of this system. We retrospectively investigated all of the patients with non-traumatic SAH who were transported by a Dr. Heli between January 2010 and March 2016. The subjects were divided into two groups: the Scene group included subjects who were evacuated from the scene by a Dr. Heli, while the Interhospital group included subjects who were transported by a ground ambulance to a nearby medical facility and then transported by a Dr. Heli to a single tertiary center. The systolic blood pressure, ratio of cardiac arrest, and Fisher classification values of the patients in the Scene group were significantly greater than those in the Interhospital group. The Glasgow Coma Scale in the Scene group was significantly lower than that in the Interhospital group. After excluding the patients with cardiac arrest, the Glasgow Coma Scale scores of the patients in the two groups did not differ to a statistically significant extent during, before or after transportation. There were no significant differences in Glasgow Outcome Scores or the survival ratio of the two groups, even when cardiac arrest patients were included. The present study indirectly suggests the safety of using a Dr. Heli to evacuate SAH patients from the scene. Copyright © 2016 Elsevier Inc. All rights reserved.

  15. Performing the Groundwork: Building a WEC/WAC Writing Program at The College of St. Scholastica

    ERIC Educational Resources Information Center

    Bastian, Heather

    2014-01-01

    This program profile describes the efforts needed to develop a new writing program at a small college. The author explores how she cultivated relations with disciplinary faculty to collaboratively redefine a "problem" into an opportunity by adopting Krista Ratcliffe's technique of rhetorical listening. She then outlines the…

  16. On Being Watched: Teaching the Wisdom of Adulthood

    ERIC Educational Resources Information Center

    Heischman, Daniel R.

    2010-01-01

    In "Speaking of Faith," radio journalist Krista Tippett recalls the time when she began to recognize the hypocrisy and contradictions in the behavior of the people around her. Tippett's experience is not only far from unusual, it is formative. It led her to make some important decisions in her life, including the desire never to live a life of…

  17. A Decision Tool to Evaluate Budgeting Methodologies for Estimating Facility Recapitalization Requirements

    DTIC Science & Technology

    2008-03-01

    REQUIREMENTS   THESIS Presented to the Faculty Department of Systems and Engineering Management Graduate School of Engineering and... Management Air Force Institute of Technology Air University Air Education and Training Command In Partial Fulfillment of the Requirements for the Degree...of Master of Science in Engineering Management Krista M. Hickman, BS Captain, USAF March 2008 APPROVED FOR PUBLIC RELEASE; DISTRIBUTION

  18. Using Multi-Angle WorldView-2 Imagery to Determine Ocean Depth Near Oahu, Hawaii

    DTIC Science & Technology

    2012-09-01

    NAVAL POSTGRADUATE SCHOOL MONTEREY , CALIFORNIA THESIS Approved for public release; distribution is unlimited USING MULTI-ANGLE...FUNDING NUMBERS 6. AUTHOR(S) Krista R. Lee 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Naval Postgraduate School Monterey , CA 93943-5000...at multiple angles over shallow water provide analysts with a unique perspective of bathymetry in coastal areas. Observations taken by

  19. Overcoming Unintentional Barriers with Intentional Strategies: Educating Faculty about Student Disabilities

    ERIC Educational Resources Information Center

    Forrest, Krista D.

    2003-01-01

    Krista Forrest is an Assistant Professor in the Department of Psychology at the University of Nebraska at Kearney, where she teaches general psychology and life span development as well as advanced courses in adolescent psychology, group dynamics, and psychology and law. A graduate of North Carolina State University with a MS in developmental…

  20. Utopia University: A Faculty Member Reflects on Recommendations for the Future of SoTL

    ERIC Educational Resources Information Center

    Forrest, Krista D.

    2013-01-01

    The author, Krista D. Forrest, Professor of Psychology, University of Nebraska at Kearney, reports on what it would take to create a "Utopian university," a campus of the future where faculty members' scholarship of teaching and learning (SoTL) has gone on to change departments and as the departments changed, so did the institution.…

  1. Eating Disorders: The Impact on Children and Families. Hearing before the Select Committee on Children, Youth, and Families. House of Representatives, One Hundredth Congress, First Session (San Francisco, CA, July 31, 1987).

    ERIC Educational Resources Information Center

    Congress of the U.S., Washington, DC. House Select Committee on Children, Youth, and Families.

    The text of a Congressional hearing to examine the impact of eating disorders on children and families is presented in this document. Testimony by the following witnesses is included: (1) Krista Brown, eating disorder victim, and her mother, Susan Brown; (2) Robert B. Duncan, a hospital president; (3) Patricia Fallon, a clinical psychogist; (4)…

  2. Overcoming Unintentional Barriers with Intentional Strategies: Educating Faculty about Student Disabilities

    ERIC Educational Resources Information Center

    Forrest, Krista D.

    2003-01-01

    Krista Forrest is an Assistant Professor in the Department of Psychology at the University of Nebraska at Kearney, where she teaches general psychology and life span development as well as advanced courses in adolescent psychology, group dynamics, and psychology and law. A graduate of North Carolina State University with a MS in developmental…

  3. EXAMINATION OF THE PROTEIN PROFILE OF HELICOBACTER PYLORI UNDER DIFFERENT GROWTH CONDITIONS USING MATRIX-ASSISTED LASER DESORPTION MASS SPECTROMETRY

    EPA Science Inventory

    US EPA currently has H. pylori on its Contaminant Candidate List 2 (CCL 2), methods are needed to detect the occurrence of viable H. pylori in drinking water. H. pyloi is an interesting microorganism because it can change from a cultural and metabolically active state with a heli...

  4. Understanding the effects of fire management practices on forest health: Implications for weeds and vegetation structure (Project INT-F-04-01) [Chapter 14

    Treesearch

    Anne E. Black; Peter Landres

    2011-01-01

    Current fire policy to restore ecosystem function and resiliency and reduce buildup of hazardous fuels implies a larger future role for fire (both natural and human ignitions) (USDA and USDOI 2000). Yet some fire management (such as building fire line, spike camps, or heli-spots) potentially causes both short- and long-term impacts to forest health. In the short run,...

  5. EXAMINATION OF THE PROTEIN PROFILE OF HELICOBACTER PYLORI UNDER DIFFERENT GROWTH CONDITIONS USING MATRIX-ASSISTED LASER DESORPTION MASS SPECTROMETRY

    EPA Science Inventory

    US EPA currently has H. pylori on its Contaminant Candidate List 2 (CCL 2), methods are needed to detect the occurrence of viable H. pylori in drinking water. H. pyloi is an interesting microorganism because it can change from a cultural and metabolically active state with a heli...

  6. IFLA General Conference, 1989. Division of Special Libraries. Section of Administrative Libraries; Section of Social Science Libraries; Section of Geography and Map Libraries; Section of Science and Technology Libraries; Section of Biological and Medical Science Libraries; Section of Art Libraries; Joint Session with the Round Table on Audiovisual Media. The International Association of Law Libraries. Booklet 20.

    ERIC Educational Resources Information Center

    International Federation of Library Associations, The Hague (Netherlands).

    Twenty-one papers from the Division of Special Libraries are included in this collection: "Information Systems Planning as a Tool of Developing Library Work: The Case of Statistics Library" (Heli Myllys); "The Libraries of the French Central Government Departments and the Administrative Library of the City of Paris" (French and English versions;…

  7. Local genes for local bacteria: Evidence of allopatry in the genomes of transatlantic Campylobacter populations

    USDA-ARS?s Scientific Manuscript database

    The genetic structure of bacterial populations can be related to the geographical isolation source. In some species, there is a strong correlation between geographical distances and genetic distances, which can be caused by different evolutionary mechanisms. The patterns of ancient admixture in Heli...

  8. Regenerative Engine Analysis Program (REAP).

    DTIC Science & Technology

    1981-01-01

    were con- sidered in an effort to identify promising concepts for heli- copter applications. The aero/ thermodynamic characteristics of heat exchangers...AiResearch for small engines. The program, entitled WATE (Weight Analysis of Turbine Engines) accepts as inputs the geometric, thermodynamic ...Military Airplane Development; NASA-Lewis Research Center CR159431, Jan- uary 1979. 27 INPUT: - CONFIGURATION DATA - THERMODYNAMIC DATA - MECHANICAL AND

  9. Almond of Loretto: Scottish Educational Visionary and Reformer.

    ERIC Educational Resources Information Center

    Mangan, J. A.

    1979-01-01

    The author details the influence of Hely Hutchinson Almond (1832-1903) on education in Scotland. In 1862 Almond purchased Loretto, a small private school at Musselburgh, where he taught his doctrine of rationality, or sound living, for the next 41 years. (KC)

  10. Almond of Loretto: Scottish Educational Visionary and Reformer.

    ERIC Educational Resources Information Center

    Mangan, J. A.

    1979-01-01

    The author details the influence of Hely Hutchinson Almond (1832-1903) on education in Scotland. In 1862 Almond purchased Loretto, a small private school at Musselburgh, where he taught his doctrine of rationality, or sound living, for the next 41 years. (KC)

  11. IFLA General Conference, 1989. Division of Special Libraries. Section of Administrative Libraries; Section of Social Science Libraries; Section of Geography and Map Libraries; Section of Science and Technology Libraries; Section of Biological and Medical Science Libraries; Section of Art Libraries; Joint Session with the Round Table on Audiovisual Media. The International Association of Law Libraries. Booklet 20.

    ERIC Educational Resources Information Center

    International Federation of Library Associations, The Hague (Netherlands).

    Twenty-one papers from the Division of Special Libraries are included in this collection: "Information Systems Planning as a Tool of Developing Library Work: The Case of Statistics Library" (Heli Myllys); "The Libraries of the French Central Government Departments and the Administrative Library of the City of Paris" (French and English versions;…

  12. Sequential sampling for panicle caterpillars (Lepidoptera: Noctuidae) in sorghum

    USDA-ARS?s Scientific Manuscript database

    Sorghum panicle worm is an economically important insect pest complex of sorghum throughout the Great Plains of the United States, particularly in Texas, Oklahoma, and Kansas. The sorghum panicle worm complex consists of larvae of two highly polyphagous lepidopteran species: the corn earworm, Heli...

  13. Identifying Dynamic Environments for Cross-Cultural Competencies

    DTIC Science & Technology

    2014-08-01

    conducted to determine if there were any additional competencies relevant for intercultural interactions that were missing from the initial framework and...Technical Report 1345 Identifying Dynamic Environments for Cross-Cultural Competencies Krista Langkamer Ratwani Jeffrey M...Dynamic Environments for Cross-Cultural Competencies 5a. CONTRACT NUMBER W5J9CQ-11-C-0013 5b. GRANT NUMBER 5c. PROGRAM ELEMENT

  14. Invasive Species Guidebook for Department of Defense Installations in the Delaware River Basin: Identification, Control, and Restoration

    DTIC Science & Technology

    2009-06-01

    Krista Grigg, Maria Vargas, Laura Muhs, Seth Berry, John Pilcicki and Dorothy Keough for their partnership in coordinating efforts at the pilot...Photo by Chuck Bargeron, University of Georgia, Bugwood.org. (above) Giant Reed stalk and leaves. Photo by James H. Miller, USDA Forest Service...Bugwood.org (above) Rhizome extending laterally from cogongrass roots. Photo by James H. Miller, USDA Forest Service, Bugwood.org. 21 INVASIVE

  15. Stability and Degradation Mechanisms of Metal-Organic Frameworks Containing the Zr6O4(OH)4 Secondary Building Unit

    DTIC Science & Technology

    2013-03-18

    2211 MOF stability REPORT DOCUMENTATION PAGE 11. SPONSOR/MONITOR’S REPORT NUMBER(S) 10. SPONSOR/MONITOR’S ACRONYM(S) ARO 8. PERFORMING...Krista S. Waltonc Metal–organic frameworks ( MOFs ) with the Zr6O4(OH)4 secondary building unit (SBU) have been of particular interest for potential...significant changes in chemical and thermal stability of Zr6O4(OH)4 MOFs with the incorporation of different organic linkers. As the number of

  16. Using Panchromatic Imagery in Place of Multispectral Imagery for Kelp Detection in Water

    DTIC Science & Technology

    2010-01-01

    photographs of kelp canopies were first taken in the 1930s. KELCO, a major harvester of kelp beds in southern California, and the California Department...Using panchromatic imagery in place of multispectral imagery for kelp detection in water Angela M. Kim, R. Chris Olsen, Krista Lee, David...systems provides a powerful tool for mapping kelp in water. MSI are not always available, however, and there are systems which provide only

  17. Real time computer controlled weld skate

    NASA Technical Reports Server (NTRS)

    Wall, W. A., Jr.

    1977-01-01

    A real time, adaptive control, automatic welding system was developed. This system utilizes the general case geometrical relationships between a weldment and a weld skate to precisely maintain constant weld speed and torch angle along a contoured workplace. The system is compatible with the gas tungsten arc weld process or can be adapted to other weld processes. Heli-arc cutting and machine tool routing operations are possible applications.

  18. Defense and Homeland Security Applications of Multi-Agent Simulations

    DTIC Science & Technology

    2007-12-01

    green alert (the normal posture), the force deployment in the operational area consists of the following: • One HURACAN -class missile ship, SAAR 4.5...HAWKEYE AEW aircraft. • Presence of the AVIOCAR MPA. • Aerial patrol by aircraft, type REDIGO, or heli- copter, MI-17. • Patrol area of a HURACAN ...role as the HAWKEYE AEW aircraft, but with less range in its surveillance radar) be present in the area. • The patrol area of the HURACAN ship is not

  19. Helicopter Reliability and Maintainability Trends during Development and Production.

    DTIC Science & Technology

    1981-07-01

    project management tool used to evaluate the R&M, life cycle cost, performance, and various other character- istics of an equipment at major design...data (W’s of about 0.5) have been used in predicting reliability growth for many other equipment programs, including helicopters. However, the heli...data plotted on a log-log grid using .::ard nreaast squares theory. Alternative estimators have been derived by Crow [13], Donelson [14], and others

  20. Impact of Airfoils on Aerodynamic Optimization of Heavy Lift Rotorcraft

    DTIC Science & Technology

    2006-01-01

    Modeling Capability with a Conceptual Rotorcraft Sizing Code,” American Helicopter Society Vertical Lift Aircraft Design Conference, San Francisco...American Helicopter Society International, Inc. All rights reserved. Introduction A new generation of very large, fast rotorcraft is being studied to...Ref. 4). Other codes, including NASTRAN and HeliFoil, were used for subsystem analyses. Reference 1 discusses the integration of the various

  1. Standing Down a Joint Task Force

    DTIC Science & Technology

    1995-01-01

    maintains a small American military presence in Hon- duras at a facility known as Soto Cano Air Base. Joint Task Force-Bravo (JTF–B), directly...medivac heli- copter capability, and assists Hon- duras in counterdrug actions.1 Since the United States has no base leasing agreement, its military...example, SOUTHCOM points out that JTF–B contributes millions of dollars annu- ally to the local economy of Comay- agua and that the departure of Amer

  2. DSTR/501-M62B Dynamic Interface Critical Speed Problem

    DTIC Science & Technology

    1977-05-01

    The speed reduction for the helicopter rotors is accomplished in the heli- copter transmission. Such a concept results in smaller diameter (lighter...coupling of the engine and drive shafting in the Dynamic System Test Rig (DSTR). This rig is an integrated rotor and drive shafting test vehicle for...showed that each major component of the drive train had acceptable rotor dynamic characteristics when analyzed separately. A more detailed coupled shafting

  3. Interpretation of high-resolution low-altitude helicopter magnetometer surveys over sites contaminated with unexploded ordnance

    NASA Astrophysics Data System (ADS)

    Billings, Stephen; Wright, David

    2010-12-01

    Throughout the world, millions of acres of potentially productive land are contaminated with unexploded ordnance due to either past conflicts or to military training activities. Low-level helicopter magnetometry (HeliMag) is currently being used to rapidly survey large areas and identify regions that are potentially clear of hazardous munitions. One configuration currently in use comprises seven cesium vapor magnetometers, horizontally spaced 1.5 m apart and mounted on a boom several meters in front of a Bell 206L helicopter. Magnetometer data are collected at 400 Hz at altitudes as low as 1.5 m above the ground along transects spaced 7 meters apart. From this dense, high-resolution data, potential metallic targets as small as a 60 mm mortar are identified using manual and/or automatic target picking methods. The target picks are then used to estimate densities of potential contamination. 100% detection is generally not feasible, so that HeliMag is usually applied in a characterization rather than in a clearance mode. We describe a HeliMag survey collected over a UXO contaminated site at Yekau Lake, near Edmonton, Canada. The objective was to identify the location and extent of an 11.5 pound bomb target area at a former training range. The target density estimates derived from manual picks were strongly influenced by geology and clutter and did not reflect the underlying density of ordnance and ordnance related clutter. By fitting a dipole model to each target pick, and comparing it to the expected response of the target item, we could estimate the density of objects with similar size/shape to an 11.5 pound bomb. This analysis clearly identified an area of elevated contamination in the same region where 11.5 pound bombs were found during ground reconnaissance. In summary, the new methodology significantly improves the interpretability of HeliMag data when used for UXO site assessment.

  4. Development of Plaque Assay Systems for Poliovirus.

    DTIC Science & Technology

    1982-04-01

    from as little as 25 mg/mL (1/10th of that used in the actual plaque assay) to 1000 mg/mL, and to inhibit poliovirus cytopathic effect In...1067 DEVELOPMENT OF PLAQUE ASSAY SYSTEMS FOR POLIOVIRUS (U) by R.E. Fulton and K. Munroe Abstract During the summer months of 1978, Ms. Krista Munroe...quantitation of infectious poliovirus type 1. .Two different plaque assay techniques were developed and compared. The results of this work are presented

  5. Composite Universal Weapons Pylon Damage Tolerance

    DTIC Science & Technology

    2010-10-29

    1 Stainless T3585-04C168 4-40 Tangless Heli-coil 1 Stainless NAS1352C04H3 4-40 Socket head cap screw AR Adhesive EA 9309.3 Hysol Adhesive AR Sealant ...PR-2200 PRC Electrically Conductive Sealant AR Paint MIL-DTL-53039 CARC Paint Aircraft Green AR Primer MIL-PRF-23377 Non-Chromate Primer The CUWP...flew over 50 flight hours and includes the following live fire tests: a) 1000 rounds of .50 caliber ball ammunition from the M3P machine gun b

  6. Extracting Hydrogeology from Heliborne Dual Moment Transient Electromagnetic Investigation in Geologically Divergent Terrenes

    NASA Astrophysics Data System (ADS)

    Ahmed, S.; Chandra, S.; Auken, E.; Verma, S. K.

    2014-12-01

    Comprehensive knowledge of aquifer system is an important requisite for its effective management in India. Geological formations are complex and variable, punctual and scarce information are not adequate to understand, asses and manage them. Continuous data acquisition, their interpretation and integration with available geological/geophysical information is the solution. Heliborne dual moment transient electromagnetic (HeliTEM) and magnetic (HeliMAG) measurements have been carried out in divergent geological terrenes in India comprising Gangetic alluvium, Tertiary sediments underlying the Thar desert, Deccan basalts and Gondwana sediments, weathered and fractured granite gneisses and schists and the coastal alluvium with Tertiary sediments. The survey was carried out using state of the art equipment SkyTEM. The paper presents a synopsis of the results of the HeliTEM surveys that have helped in obtaining continuous information on the geoelectrical nature of sub-surface. HeliTEM data were supported by a number of ground geophysical surveys. The results provide the 3D subsurface structures controlling the groundwater conditions, the regional continuity of probable aquifers, the variations in lithological character and the quality of water in terms of salinity. Specialized features pertaining to hydrogeological characteristics obtained from this study are as follows:  A clear delineation of clay beds and their spatial distribution providing the multi-layered aquifer setup in the Gangetic plains.  Delineation of low resistivity zones in the quartzite below the over exploited aquifers indicating the possibility of new aquifers.  Presence of freshwater zones underneath the saline water aquifers in the thick and dry sands in deserts.  Clear demarcation of different lava flows, mapping the structural controls and highly porous zones in the contact of basalts and Gondwanas.  A complete and continuous mapping of weathered zone in crystalline hard rock areas

  7. Vision-Based Precision Landings of a Tailsitter UAV

    DTIC Science & Technology

    2010-04-01

    this research was an off-the-shelf HeliMax CPv3 remote con- trolled (RC) helicopter shown in Figure 2.3. The helicopter has a 20.75 inch rotor span and...easy to see how this could lead to large position estimation errors. Dull black cloth was taped to the floor with black gaffing tape in an attempt to...use of a Kalman filter or extended Kalman filter. Infor- mation from optic flow sensed in the image frame, or from rate gyros and accelerometers from

  8. Map showing minimum depth to water in shallow aquifers (1963-72) in the Sugar House quadrangle, Salt Lake County, Utah

    USGS Publications Warehouse

    Mower, R.W.; Van Horn, Richard

    1973-01-01

    The depth to ground water in shallow aquifers in the Sugar Horse quadrangle ranges from zero in areas of springs and seeps to more than 10 feet beneath most of the area shown on the map. The depth to water differs from place to place because of irregular topography, and the varying capability of different rock materials to transmit water. Ground water also occurs under unconfined and confined conditions in deep aquifers beneath the Sugar Horse quadrangle, as shown by the block diagram and as described by Hely, Mower, and Harr (1971a, p. 17-111).

  9. V-22 Osprey Tilt-Rotor Aircraft

    DTIC Science & Technology

    2002-01-14

    Congressional Research Service ˜ The Library of Congress CRS Issue Brief for Congress Received through the CRS Web Order Code IB86103 V-22 Osprey ...00-00-2002 to 00-00-2002 4. TITLE AND SUBTITLE V-22 Osprey Tilt-Rotor Aircraft 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER...Congress V-22 Osprey Tilt-Rotor Aircraft SUMMARY The V-22 Osprey is a tilt-rotor aircraft that takes off and lands vertically like a heli- copter and

  10. Extracting Hydrogeology from Heliborne Dual Moment Transient Electromagnetic Investigations in Geologically Divergent Terrenes

    NASA Astrophysics Data System (ADS)

    Ahmed, S.; Chandra, S.; Auken, E.; Verma, S. K.

    2015-12-01

    Comprehensive knowledge of aquifer system is an important requisite for its effective management in India. Geological formations are complex and variable, punctual and scarce information are not adequate to understand, asses and manage them. Continuous data acquisition, their interpretation and integration with available geological/geophysical information is the solution. Heliborne dual moment transient electromagnetic (HeliTEM) and magnetic (HeliMAG) measurements have been carried out in divergent geological terrenes in India comprising Gangetic alluvium, Tertiary sediments underlying the Thar desert, Deccan basalts and Gondwana sediments, weathered and fractured granite gneisses and schists and the coastal alluvium with Tertiary sediments. The survey was carried out using state of the art equipment SkyTEM. The paper presents a synopsis of the results of the HeliTEM surveys that have helped in obtaining continuous information on the geoelectrical nature of sub-surface. HeliTEM data were supported by a number of ground geophysical surveys. The results provide the 3D subsurface structures controlling the groundwater conditions, the regional continuity of probable aquifers, the variations in lithological character and the quality of water in terms of salinity. Specialized features pertaining to hydrogeological characteristics obtained from this study are as follows: A clear delineation of clay beds and their spatial distribution providing the multi-layered aquifer setup in the Gangetic plains. Delineation of low resistivity zones in the quartzite below the over exploited aquifers indicating the possibility of new aquifers. Presence of freshwater zones underneath the saline water aquifers in the thick and dry sands in deserts. Clear demarcation of different lava flows, mapping the structural controls and highly porous zones in the contact of basalts and Gondwanas. A complete and continuous mapping of weathered zone in crystalline hard rock areas providing information

  11. The Traveling Wave Amplifier as a Bistable Oscillator

    DTIC Science & Technology

    1956-01-01

    the TWT has the property .that "the phase of the output relative to the input is a linear function of the length of helix employed and of helix ...Packard Company 12. Lee, Hon. C. 13. Lee, Hon. C. 14. Putz, John L. 15. Rowe, J.E. NEW BROADBAND MICROWAVE POWER AMPLIFIERS USING HELIX COUPLED...to the inner helix . The coupling heliX is fitted into a sheath and spider designed to support the TWT . The sheath assembly forme a ground surface for

  12. METHOD OF PREPARING A FUEL ELEMENT

    DOEpatents

    Noland, R.A.; Stone, C.C.

    1959-09-01

    A method is presented for joining sections of uranium rod which are clad in a corrosion-resistant material of higher melting point than uranium. The method includes the steps of preferentially- etching the uranium in the ends of the sections to be joined to depress the level of the uranium slighily below that of the cladding, bringing the ends to be joined together, applying axial pressure to the joint, and heli-arc welding the joint while rotating the joint, to fuse the cladding to a uniform depth of about 50% of the thickness of the cladding.

  13. Automated Workflow for Preparation of cDNA for Cap Analysis of Gene Expression on a Single Molecule Sequencer

    PubMed Central

    Nagao-Sato, Sayaka; Saijo, Eri; Lassmann, Timo; Kanamori-Katayama, Mutsumi; Kaiho, Ai; Lizio, Marina; Kawaji, Hideya; Carninci, Piero; Forrest, Alistair R. R.; Hayashizaki, Yoshihide

    2012-01-01

    Background Cap analysis of gene expression (CAGE) is a 5′ sequence tag technology to globally determine transcriptional starting sites in the genome and their expression levels and has most recently been adapted to the HeliScope single molecule sequencer. Despite significant simplifications in the CAGE protocol, it has until now been a labour intensive protocol. Methodology In this study we set out to adapt the protocol to a robotic workflow, which would increase throughput and reduce handling. The automated CAGE cDNA preparation system we present here can prepare 96 ‘HeliScope ready’ CAGE cDNA libraries in 8 days, as opposed to 6 weeks by a manual operator.We compare the results obtained using the same RNA in manual libraries and across multiple automation batches to assess reproducibility. Conclusions We show that the sequencing was highly reproducible and comparable to manual libraries with an 8 fold increase in productivity. The automated CAGE cDNA preparation system can prepare 96 CAGE sequencing samples simultaneously. Finally we discuss how the system could be used for CAGE on Illumina/SOLiD platforms, RNA-seq and full-length cDNA generation. PMID:22303458

  14. INTERPRETATION OF AIRBORNE ELECTROMAGNETIC AND MAGNETIC DATA IN THE 600 AREA

    SciTech Connect

    CUMMINS GD

    2010-11-11

    As part of the 200-PO-1 Phase I geophysical surveys, Fugro Airborne Surveys was contracted to collect airborne electromagnetic (EM) and magnetic surveys of the Hanford Site 600 Area. Two helicopter survey systems were used with the HeliGEOTEM{reg_sign} time domain portion flown between June 19th and June 20th, 2008, and the RESOLVE{reg_sign} frequency domain portion was flown from June 29th to July 1st, 2008. Magnetic data were acquired contemporaneously with the electromagnetic surveys using a total-field cesium vapor magnetometer. Approximately 925 line kilometers (km) were flown using the HeliGEOTEM{reg_sign} II system and 412 line kilometers were flown using the RESOLVE{reg_sign} system. The HeliGEOTEM system has an effective penetration of roughly 250 meters into the ground and the RESOLVE system has an effective penetration of roughly 60 meters. Acquisition parameters and preliminary results are provided in SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site. Airborne data are interpreted in this report in an attempt to identify areas of likely preferential groundwater flow within the aquifer system based on the presence of paleochannels or fault zones. The premise for the interpretation is that coarser-grained intervals have filled in scour channels created by episodic catastrophic flood events during the late Pleistocene. The interpretation strategy used the magnetic field anomaly data and existing bedrock maps to identify likely fault or lineament zones. Combined analysis of the magnetic, 60-Hz noise monitor, and flight-altitude (radar) data were used to identify zones where EM response is more likely due to cultural interference and or bedrock structures. Cross-sectional and map view presentations of the EM data were used to identify more electrically resistive zones that likely correlate with coarser-grained intervals. The resulting interpretation identifies one major northwest-southeast trending

  15. Stratospheric platforms: a novel technological support for Earth observation and remote sensing applications

    NASA Astrophysics Data System (ADS)

    Dovis, Fabio; Lo Presti, Letizia; Magli, Enrico; Mulassano, Paolo; Olmo, Gabriella

    2001-12-01

    The international community agrees that the new technology based on the use of Unmanned Air Vehicles High Altitude Very long Endurance (UAV-HAVE) could play an important role for the development of remote sensing and telecommunication applications. A UAV-HAVE vehicle can be described as a low- cost flying infrastructure (compared with satellites) optimized for long endurance operations at an altitude of about 20 km. Due to such features, its role is similar to satellites, with the major advantages of being less expensive, more flexible, movable on demand, and suitable for a larger class of applications. According to this background, Politecnico di Torino is involved as coordinator in an important project named HeliNet, that represent one of the main activities in Europe in the field of stratospheric platforms, and is concerned with the development of a network of UAV-HAVE aircraft. A key point of this project is the feasibility study for the provision of several services, namely traffic monitoring, environmental surveillance, broadband communications and navigation. This paper reports preliminary results on the HeliNet imaging system and its remote sensing applications. In fact, many environmental surveillance services (e.g. regional public services for agriculture, hydrology, fire protection, and more) require very high-resolution imaging, and can be offered at a lower cost if operated by a shared platform. The philosophy behind the HeliNet project seems to be particularly suitable to manage such missions. In particular, we present a system- level study of possible imaging payloads to be mounted on- board of a stratospheric platform to collect Earth observation data. Firstly, we address optical payloads such as multispectral and/or hyperspectral ones, which are a very short-term objective of the project. Secondly, as an example of mid-term on-board payload, we examine the possibility to carry on the platform a light-SAR system. For both types of payload, we show

  16. A reappraisal of the controversy of Dax and Broca.

    PubMed

    Cubelli, R; Montagna, C G

    1994-10-01

    Paul Broca is unanimously recognized as the founder of neuropsychology. Helis development of the scientific method to map mental functions onto brain topographpy has been enormously influential. Nevertheless, Dax's paper on the left hemisphere dominance for speech was written and published before Broca explicitely proposed the same theory. Probably, Broca was aware of the paper prior to 1865, but he never acknowledged Dax's original theoretical contribution. On the contrary, he always claimed to be the first to espouse the theory of left hemisphere dominance for language and never quoted Marc Dax (Broca, 1877 p 536), 'I do not like dealing with the questions of priority concerning myself. That is the reason why I did not mention the name of Dax in my paper'. In our opinion, the weight of evidence reported here suggests that the theory of the left hemisphere dominance for speech must be attributed equally to Dax and Broca, and henceforth should be called 'the theory of Dax-Broca'.

  17. Evaluation of advanced airship concepts

    NASA Technical Reports Server (NTRS)

    Joner, B. A.; Schneider, J. J.

    1975-01-01

    A historical overview of the airship, technical and operational characteristics of conventional and hybrid concepts, and the results of a parametric design analysis and evaluation are presented. The lift capabilities of certain buoyant fluids for a hypothetical 16 million cu.ft. volume airship are compared. The potential advanced airship concepts are surveyed, followed by a discussion of the six configurations: conventional nonrigid, conventional rigid, Deltoid (Dynairship), Guppoid (Megalifter), Helipsoid, and Heli-Stat. It is suggested that a partially buoyant Helipsoid concept of the optimum buoyancy ratio has the potential to solve the problems facing future airship development, such as Ballast and Ballast Recovery System, Full Low-Speed Controllability, Susceptibility to Wind/Gusting, Weather/Icing Constraints, Ground Handling/Hangaring, and Direct/Indirect Operating Costs.

  18. From golden hills to sycamore trees: pastoral homelands and ethnic identity in Irish immigrant fiction, 1860-75.

    PubMed

    Corporaal, Marguérite

    2010-01-01

    The prose fiction that remembers the trials of starvation and eviction of the Great Famine (1845-50) often juxtaposes representations of blasted, infertile land with images of a green, idyllic Erin. Through a discussion of Mary Anne Sadlier's Bessy Conway (1861), Elizabeth Hely Walshe's Golden Hills: A Tale of the Irish Famine (1865) and John McElgun's Annie Reilly (1873), this article reveals that immigrant writers of the Famine generation often negotiate depictions of Famine-stricken wasteland with evocations of a pastoral homeland. In the case of the two Catholic novels, Bessy Conway and Annie Reilly, the pastoral becomes a point of ethnic identification through which the immigrants can recollect and reconstruct a sense of Irishness in exile. By contrast, Golden Hills, which focuses on the Anglo-Irish ascendancy, does not lament the mass exodus of afflicted Irish: the novel rather envisions emigration as a way to regenerate Ireland as locus amoenus.

  19. Low-energy nuclear reactions in crystal structures

    NASA Astrophysics Data System (ADS)

    Bagulya, A. V.; Dalkarov, O. D.; Negodaev, M. A.; Rusetskii, A. S.

    2017-09-01

    Results of studying low-energy nuclear reactions at the HELIS facility (LPI) are presented. Investigations of yields from DD reactions in deuterated crystal structures at deuteron energies of 10 to 25 keV show a considerable enhancement effect. It is shown that exposure of the deuterated targets to the H+ (proton) and Ne+ beams with energies from 10 to 25 keV and an X-ray beam with the energy of 20 to 30 keV stimulates DD reaction yields. For the CVD diamond target, it is shown that its orientation with respect to the deuteron beam affects the neutron yield. The D+ beam is shown to cause much higher heat release in the TiDx target than the H+ and Ne+ beams, and this heat release depends on the deuterium concentration in the target and the current density of the deuteron beam.

  20. Immune responsiveness of Japanese quail selected for egg yolk testosterone content under severe protein restriction.

    PubMed

    Kankova, Zuzana; Okuliarova, Monika; Zeman, Michal

    2014-11-01

    Yolk testosterone concentrations vary in response to environmental conditions and different testosterone contents can subsequently modify the phenotypic traits of offspring. Apart from effects on growth, proactive behaviour and secondary sexual characteristics, the possible negative impacts of maternal testosterone on the immune system are often considered a limitation for its deposition. The effects of maternal testosterone can be modulated by postnatal environmental conditions, such as the availability of food resources. However, the majority of studies considering the effects of maternal testosterone on the immune system have been conducted under optimum conditions. We evaluated the influence of genetic selection for high (HET) and low (LET) egg testosterone content in Japanese quail on immune responsiveness of offspring to phytohaemagglutinin (PHA) and lipopolysaccharide (LPS) stimulation under severe protein restriction. Protein restriction negatively influenced body weight and performance in the PHA-test. We observed an increase in Cort (corticosterone) and He/Ly (heterophil/lymphocyte ratio) after LPS, while no changes occurred in total IgY levels in the protein-restricted group. HET quails showed higher body mass and total IgY levels and lower He/Ly ratio than LET quails, while the PHA index and Cort concentration did not differ between lines. No interactions were found between protein restriction and genetic line. In conclusion, the immune response was not compromised under conditions of severe protein restriction in the faster growing HET line compared with the LET line. We hypothesise that the immune responsiveness of birds with higher yolk testosterone may be linked with other maternally-derived substances in a context-dependent manner. Copyright © 2014 Elsevier Inc. All rights reserved.

  1. Selected hydrologic data for Salt Lake Valley, Utah, October 1968 to October 1985

    USGS Publications Warehouse

    Seiler, R.L.

    1986-01-01

    This report contains hydrologic data collected in Salt Lake Valley from October 1968 to October 1985. The report area is bounded by the Wasatch Range on the east, the Oquirrh Mountains on the west, the Traverse Mountains on the south, and the boundary between Davis and Salt Lake Counties on the north. Hely and others (1971) defined two aquifers of major importance in the valley the principal aquifer and the shallow aquifer. The principal aquifer is a source of water for public supply and industry, whereas the shallow aquifer in many places contains water that is contaminated and is unsuitable for public supply (Seiler and Waddell, 1984). Most of the data in this report were collected by the U.S. Geological Survey in cooperation with the Utah Department of Natural Resources, Division of Water Rights, Salt Lake County Water Conservancy District, Central Utah Water Conservancy District, Granger-Hunter Improvement District, Magna Water Co. and Improvement District, City of Midvale, Salt Lake City Department of Public Utilities, City of Sandyr City of South Salt Lake, Taylorsville Bennion Improvement District, City of West Jordan, Holladay Water Company, and White City Water Co. Some of the data were published previously by Hely, Mower, and Horr (1967, 1968, and 1969), lorns, Mower, and Horr (1966a and b), Marine and Price (1963), and Seiler and Waddell (1984).The purpose of this report is to provide hydrologic data for use by the general public and by officials who manage water resources and to supplement interpretive reports for the area. Information about wells, water levels in wells, and the chemical and physical properties of ground water is given in tables 1-4, and the well locations are shown on plate 1.

  2. Flow Rate In Microfluidic Pumps As A Function Of Tension and Pump Motor Head Speed

    NASA Astrophysics Data System (ADS)

    Irwin, Anthony; McBride, Krista

    2015-03-01

    As the use of microfluidic devices has become more common in recent years the need for standardization within the pump systems has grown. The pumps are ball bearing rotor microfluidic pumps and work off the idea of peristalsis. The rapid contraction and relaxation propagating down a tube or a microfluidic channel. The ball bearings compress the tube (occlusion) and move along part of the tube length forcing fluid to move inside of the tube in the same direction of the ball bearings. When the ball bearing rolls off the area occupied by the microfluidic channel, its walls and ceiling undergo restitution and a pocket of low pressure is briefly formed pulling more of the liquid into the pump system. Before looking to standardize the pump systems it must be known how the tension placed by the pumps bearing heads onto the PDMS inserts channels affect the pumps performance (mainly the flow rate produced). The relationship of the speed at which the bearings on the motor head spin and the flow rate must also be established. This research produced calibration curves for flow rate vs. tension and rpm. These calibration curves allow the devices to be set to optimal user settings by simply varying either the motor head tension or the motor head speed. I would like to acknowledge the help and support of Vanderbilt University SyBBURE program, Christina Marasco, Stacy Sherod, Franck Block and Krista McBride.

  3. Changes in default mode network as automaticity develops in a categorization task.

    PubMed

    Shamloo, Farzin; Helie, Sebastien

    2016-10-15

    The default mode network (DMN) is a set of brain regions in which blood oxygen level dependent signal is suppressed during attentional focus on the external environment. Because automatic task processing requires less attention, development of automaticity in a rule-based categorization task may result in less deactivation and altered functional connectivity of the DMN when compared to the initial learning stage. We tested this hypothesis by re-analyzing functional magnetic resonance imaging data of participants trained in rule-based categorization for over 10,000 trials (Helie et al., 2010) [12,13]. The results show that some DMN regions are deactivated in initial training but not after automaticity has developed. There is also a significant decrease in DMN deactivation after extensive practice. Seed-based functional connectivity analyses with the precuneus, medial prefrontal cortex (two important DMN regions) and Brodmann area 6 (an important region in automatic categorization) were also performed. The results show increased functional connectivity with both DMN and non-DMN regions after the development of automaticity, and a decrease in functional connectivity between the medial prefrontal cortex and ventromedial orbitofrontal cortex. Together, these results further support the hypothesis of a strategy shift in automatic categorization and bridge the cognitive and neuroscientific conceptions of automaticity in showing that the reduced need for cognitive resources in automatic processing is accompanied by a disinhibition of the DMN and stronger functional connectivity between DMN and task-related brain regions. Copyright © 2016 Elsevier B.V. All rights reserved.

  4. 3D inversion of total magnetic intensity data for time-domain EM at the Lalor massive sulphide deposit

    NASA Astrophysics Data System (ADS)

    Yang, Dikun; Oldenburg, Douglas W.

    2017-01-01

    The Lalor deposit is a massive sulphide that is characterised as a stack of conductive ore lenses buried more than 600 m deep. We invert helicopter sub-audio magnetics (HeliSAM) data from Lalor collected using a ground large transmitter loop and an airborne total magnetic intensity (TMI) magnetometer measuring the time-domain electromagnetic (EM) responses. The TMI data are modelled as a projection of the anomalous field onto the earth's magnetic field. Inversion of these data is considered a significant case study because of two challenges. First, the early-time data are contaminated by the infrastructure on the surface. Second, inverting the data with a uniform half-space as the initial model results in a mathematically acceptable, but non-geologic, model. We create workflows to overcome these difficulties. For the contaminated data, we use a locally refined mesh and a constrained inversion to recover highly conductive cells near the surface that effectively represent the infrastructure. This allows us to safely extract geologic information from the early time data. The non-uniqueness in the inversion is reduced by warm-starting the voxel 3D inversion with a more reasonable initial guess, for example, a block model from geometric inversions. Those procedures greatly improve the inversion image from the surface to the bottom of the target at Lalor, and they can easily be incorporated into the industrial production workflows.

  5. High energy density capacitors for vacuum operation with a pulsed plasma load

    NASA Technical Reports Server (NTRS)

    Guman, W. J.

    1976-01-01

    Results of the effort of designing, fabricating, and testing of a 40 joules/lb (88.2 joules/Kg) high voltage energy storage capacitor suitable for operating a pulsed plasma thruster in a vacuum environment for millions of pulses are presented. Using vacuum brazing and heli-arc welding techniques followed by vacuum and high pressure helium leak tests it was possible to produce a hermetically sealed relatively light weight enclosure for the dielectric system. An energy density of 40 joules/lb was realized with a KF-polyvinylidene fluoride dielectric system. One capacitor was D.C. life tested at 4 KV (107.8 joules/lb) for 2,000 hours before it failed. Another exceeded 2,670 hours without failure at 38.3 joules/lb. Pulse life testing in a vacuum exceeded 300,000 discharges with testing still in progress. The D.C. life test data shows a small decrease in capacitance and an increase in dissipation factor with time. Heat transfer from the load to the capacitor must also be considered besides the self-heat generated by the capacitor.

  6. Radiative association of He(23P) with lithium cations: Π → Σ processes

    NASA Astrophysics Data System (ADS)

    Zámečníková, Martina; Kraemer, Wolfgang P.; Soldán, Pavel

    2017-04-01

    The radiative association processes originating in the 13 Π continuum of the He (23 P) +Li+ collisional system are investigated in this study. The calculations of the dynamic collision processes are based on highly accurate state-of-the-art ab initio calculations of the potential energy functions for the 13 Π and the three lowest 3Σ states of HeLi+ and the associated transition dipole-moment functions. Cross-sections for the spontaneous and stimulated radiative association processes are calculated as functions of collision energy. The corresponding rate coefficients characterizing the efficiency of the formation of the molecular ion in its a3Σ+ , b3Σ+ , and c3Σ+ states from the initial 13 Π state are obtained over a wide range of temperatures. At very low temperatures the 1 → b process has a maximum rate-coefficient value of about 7.9 ×10-13cm3s-1 , whereas process 1 → a reaches its maximum value of 2.0 ×10-13cm3s-1 at a temperature of about 500 K. Altogether the three radiative association processes investigated here can be considered as the continuum-to-bound state radiative transition part of the total quenching of the initial collision channel.

  7. Formation processes of floe size distribution in the marginal ice zone (Invited)

    NASA Astrophysics Data System (ADS)

    Toyota, T.; Kohout, A.; Fraser, A.

    2013-12-01

    Since the marginal ice zone (MIZ) is the outer sea ice zone, its behavior is key to the understanding of the variability of sea ice extent associated with climate change. Especially for the melting processes in MIZ, where relatively small ice floes are dominant, floe size distribution (FSD) is an important parameter because smaller ice floes are subject to stronger lateral melting due to their larger cumulative perimeters. As the MIZ is characterized by vigorous interaction between sea ice and waves, breakup of sea ice due to flexural forcing and collisions is considered to play an essential role in the determination of FSD there. However, the available data have been very limited so far. Analysis of the observations of ice floes with a heli-borne video camera, focusing on the floe size ranging from 2 m to 100 m, in the Sea of Okhotsk, the Weddell Sea and off East Antarctica, revealed that while FSD is basically scale-invariant, a regime shift occurs at a size of about a few tens of meters, irrespective of the study region. It was also shown 1) that the floe size at which regime shift occurs slightly increases from 20 to 40 m with ice thickness, consistent with the theory of the flexural failure of sea ice; and 2) that to explain the scale invariance in FSD for smaller floes, a fragility of sea ice which is relevant to the strength of sea ice relative to waves can be a useful physical parameter to be correlated with the fractal dimension. Thus these results confirm the importance of wave-ice interaction to the formation of FSD. Based on this, a possible mechanism of the melting process was hypothesized that in the melting season sea ice extent retreats keeping the FSD relative to the ice edge nearly constant. As a next step and to confirm and further investigate this result, we planned to conduct the concurrent measurements of FSD, wave activities, and ice thickness off East Antarctica during the Sea Ice Physics and Ecosystem Experiment 2 (SIPEX2) in September to

  8. Formation processes of sea ice floe size distribution in the interior pack and its relationship to the marginal ice zone off East Antarctica

    NASA Astrophysics Data System (ADS)

    Toyota, Takenobu; Kohout, Alison; Fraser, Alexander D.

    2016-09-01

    To understand the behavior of the Seasonal Ice Zone (SIZ), which is composed of sea-ice floes of various sizes, knowledge of the floe size distribution (FSD) is important. In particular, FSD in the Marginal Ice Zone (MIZ), controlled by wave-ice interaction, plays an important role in determining the retreating rates of sea-ice extent on a global scale because the cumulative perimeter of floes enhances melting. To improve the understanding of wave-ice interaction and subsequent effects on FSD in the MIZ, FSD measurements were conducted off East Antarctica during the second Sea Ice Physics and Ecosystems eXperiment (SIPEX-2) in late winter 2012. Since logistical reasons limited helicopter operations to two interior ice regions, FSD in the interior ice region was determined using a combination of heli-photos and MODIS satellite visible images. The possible effect of wave-ice interaction in the MIZ was examined by comparison with past results obtained in the same MIZ, with our analysis showing: (1) FSD in the interior ice region is basically scale invariant for both small- (<100 m) and large- (>1 km) scale regimes; (2) although fractal dimensions are quite different between these two regimes, they are both rather close to that in the MIZ; and (3) for floes <100 m in diameter, a regime shift which appeared at 20-40 m in the MIZ is absent. These results indicate that one role of wave-ice interaction is to modulate the FSD that already exists in the interior ice region, rather than directly determine it. The possibilities of floe-floe collisions and storm-induced lead formation are considered as possible formation processes of FSD in the interior pack.

  9. Environmental Public Health Surveillance for Exposure to Respiratory Health Hazards: A Joint NASA/CDC Project to Use Remote Sensing Data for Estimating Airborne Particulate Matter Over the Atlanta, Georgia Metropolitan Area

    NASA Technical Reports Server (NTRS)

    Quattrochi, Dale A.; Al-Hamdan, Mohammad; Estes, Maurice; Crosson, William

    2007-01-01

    As part of the National Environmental Public Health Tracking Network (EPHTN) the National Center for Environmental Health (NCEH) at the Centers for Disease Control and Prevention (CDC) is leading a project called Health and Environment Linked for Information Exchange (HELiX-Atlanta). The goal of developing the National Environmental Public Health Tracking Network is to improve the health of communities. Currently, few systems exist at the state or national level to concurrently track many of the exposures and health effects that might be associated with environmental hazards. An additional challenge is estimating exposure to environmental hazards such as particulate matter whose aerodynamic diameter is less than or equal to 2.5 micrometers (PM2.5). HELIX-Atlanta's goal is to examine the feasibility of building an integrated electronic health and environmental data network in five counties of Metropolitan Atlanta, GA. NASA Marshall Space Flight Center (NASA/MSFC) is collaborating with CDC to combine NASA earth science satellite observations related to air quality and environmental monitoring data to model surface estimates of PM2.5 concentrations that can be linked with clinic visits for asthma. While use of the Air Quality System (AQS) PM2.5 data alone could meet HELIX-Atlanta specifications, there are only five AQS sites in the Atlanta area, thus the spatial coverage is not ideal. We are using NASA Moderate Resolution Imaging Spectroradiometer (MODIS) satellite Aerosol Optical Depth (AOD) data for estimating daily ground level PM2.5 at 10 km resolution over the metropolitan Atlanta area supplementing the AQS ground observations and filling their spatial and temporal gaps.

  10. [Dengue vector control using ether fractions from two plants (Asteraceae) as larvicide].

    PubMed

    Álvarez-Londoño, Juan C; Duarte-Gandica, Irene; Aguirre-Obando, Oscar A; Jiménez-Montoya, Jorge A

    2013-01-01

    Evaluating the larvicidal activity of two ether factions from Asteraceae (the aster, daisy or sunflower family, i.e. Heli opsisoppositifolia (L.) Druce (oxeye, sunflower-like) and Jaegeria hirta (Lag.) Less (weed-like)) on Aedes (Stegomyia) aegypti (L.) final third instar or initial fourth instar larvae near the town of Armenia in the Quindío Department in Colombia. H. oppositifolia and J. hirta plants were collected and submitted to phytochemical analysis. Ether fractions were prepared form both species to assess 11 concentrations for determining LC50, LC90 and LC95 lethal concentrations after 24 and 48 h. The LC50, LC90 and LC95 results were used to create a mathematical model for describing lethal population-concentration dynamics. Phytochemical analysis identified tannins, flavonoids, quinones, cardiac glycosides, sterols, lactones, terpenes, courmarins and alkaloids in H. oppositifolia and J. hirta. LC after 48 h regarding J. hirta (LC50 24, LC90 70 and LC95 93 ppm) was lower than those for H. oppositifolia (LC50 39, LC90 77 and LC95 94 ppm). A factorial ANOVA test confirmed this trend: 66 %, F=18.5 and p<0.05 for J. hirta and 34 %, F=18.5 and p<0.05 for H. oppositifolia. The mathematical simulation model suggested that using LC50 every 15 days and LC90 and LC95 every 30 days from either of these species led to the same response compared to using LC90 and LC95 every 30 days or LC50 every 15 days. Both species had a larvicidal effect. However, J. Hirta turned out to be more promising as an eventual bioinsecticide for controlling A. Aegypti immature states.

  11. Environmental Public Health Surveillance for Exposure to Respiratory Health Hazards: A Joint NASA/CDC Project to Use Remote Sensing Data for Estimating Airborne Particulate Matter Over the Atlanta, Georgia Metropolitan Area

    NASA Technical Reports Server (NTRS)

    Quattrochi, Dale A.; Al-Hamdan, Mohammad; Estes, Maurice; Crosson, William

    2007-01-01

    As part of the National Environmental Public Health Tracking Network (EPHTN) the National Center for Environmental Health (NCEH) at the Centers for Disease Control and Prevention (CDC) is leading a project called Health and Environment Linked for Information Exchange (HELiX-Atlanta). The goal of developing the National Environmental Public Health Tracking Network is to improve the health of communities. Currently, few systems exist at the state or national level to concurrently track many of the exposures and health effects that might be associated with environmental hazards. An additional challenge is estimating exposure to environmental hazards such as particulate matter whose aerodynamic diameter is less than or equal to 2.5 micrometers (PM2.5). HELIX-Atlanta's goal is to examine the feasibility of building an integrated electronic health and environmental data network in five counties of Metropolitan Atlanta, GA. NASA Marshall Space Flight Center (NASA/MSFC) is collaborating with CDC to combine NASA earth science satellite observations related to air quality and environmental monitoring data to model surface estimates of PM2.5 concentrations that can be linked with clinic visits for asthma. While use of the Air Quality System (AQS) PM2.5 data alone could meet HELIX-Atlanta specifications, there are only five AQS sites in the Atlanta area, thus the spatial coverage is not ideal. We are using NASA Moderate Resolution Imaging Spectroradiometer (MODIS) satellite Aerosol Optical Depth (AOD) data for estimating daily ground level PM2.5 at 10 km resolution over the metropolitan Atlanta area supplementing the AQS ground observations and filling their spatial and temporal gaps.

  12. True single-molecule DNA sequencing of a pleistocene horse bone

    PubMed Central

    Orlando, Ludovic; Ginolhac, Aurelien; Raghavan, Maanasa; Vilstrup, Julia; Rasmussen, Morten; Magnussen, Kim; Steinmann, Kathleen E.; Kapranov, Philipp; Thompson, John F.; Zazula, Grant; Froese, Duane; Moltke, Ida; Shapiro, Beth; Hofreiter, Michael; Al-Rasheid, Khaled A.S.; Gilbert, M. Thomas P.; Willerslev, Eske

    2011-01-01

    Second-generation sequencing platforms have revolutionized the field of ancient DNA, opening access to complete genomes of past individuals and extinct species. However, these platforms are dependent on library construction and amplification steps that may result in sequences that do not reflect the original DNA template composition. This is particularly true for ancient DNA, where templates have undergone extensive damage post-mortem. Here, we report the results of the first “true single molecule sequencing” of ancient DNA. We generated 115.9 Mb and 76.9 Mb of DNA sequences from a permafrost-preserved Pleistocene horse bone using the Helicos HeliScope and Illumina GAIIx platforms, respectively. We find that the percentage of endogenous DNA sequences derived from the horse is higher among the Helicos data than Illumina data. This result indicates that the molecular biology tools used to generate sequencing libraries of ancient DNA molecules, as required for second-generation sequencing, introduce biases into the data that reduce the efficiency of the sequencing process and limit our ability to fully explore the molecular complexity of ancient DNA extracts. We demonstrate that simple modifications to the standard Helicos DNA template preparation protocol further increase the proportion of horse DNA for this sample by threefold. Comparison of Helicos-specific biases and sequence errors in modern DNA with those in ancient DNA also reveals extensive cytosine deamination damage at the 3′ ends of ancient templates, indicating the presence of 3′-sequence overhangs. Our results suggest that paleogenomes could be sequenced in an unprecedented manner by combining current second- and third-generation sequencing approaches. PMID:21803858

  13. Surface water and climatologic data, Salt Lake County, Utah, water year 1981, with selected data for water years 1980 and 1982

    USGS Publications Warehouse

    McCormack, H.F.; Christensen, R.C.; Stephens, D.W.; Pyper, G.E.; Weigel, J.F.; Conroy, L.S.

    1983-01-01

    This report contains precipitation, atmospheric-deposition, water- discharge and water-quality data collected in Salt Lake County as part of two investigations by the U.S. Geological Survey. The purpose of this report is to release data collected mainly during the 1981 water year. Selected data collected during the 1980 water year not previously published or revised and the 1982 water year also are included in this report.The first investigation, which was carried out from September 1979 to August 1982, was an urban-runoff study done in cooperation with the Salt Lake County Division of Flood Control and Water Quality. The objectives of the urban-runoff study were to identify the impact of urban runoff on the quantity and quality of the water in the canals east of the Jordan River and on the major tributaries to the river.The second investigation, which was carried out from December 1979 to September 1983, is a study of water-quality problems in the Jordan River. The study was done primarily to provide information about toxic substances, dissolved-oxygen depletion, sanitary quality, and turbidity and suspended sediment in the Jordan River. It also was funded in part by the Salt Lake County Division of Flood Control and Water Quality.Several Salt Lake County employees assisted in the collection of water- quality samples from storm runoff. Of those employees, Lee R. Armstrong, Gilbert H. Heal, Steven J. Mitckes, and Ben Santistevan worked on a daily basis with the authors and made a significant contribution in the collection of the data contained in this report. Organizations that furnished data are acknowledged in the station descriptions in tables 1 and 4.Information for previously published water-discharge, water-quality, atmospheric-deposition, and precipitation data for Salt Lake County are reported by Pyper and others (1981); Dustin (1977); Hely and others (1971) and references that they cited; and Feth and others (1964). Additional water- discharge and water

  14. Blind Geothermal System Exploration in Active Volcanic Environments; Multi-phase Geophysical and Geochemical Surveys in Overt and Subtle Volcanic Systems, Hawai’i and Maui

    SciTech Connect

    Fercho, Steven; Owens, Lara; Walsh, Patrick; Drakos, Peter; Martini, Brigette; Lewicki, Jennifer L.; Kennedy, Burton M.

    2015-08-01

    Suites of new geophysical and geochemical exploration surveys were conducted to provide evidence for geothermal resource at the Haleakala Southwest Rift Zone (HSWRZ) on Maui Island, Hawai’i. Ground-based gravity (~400 stations) coupled with heli-bourne magnetics (~1500 line kilometers) define both deep and shallow fractures/faults, while also delineating potentially widespread subsurface hydrothermal alteration on the lower flanks (below approximately 1800 feet a.s.l.). Multi-level, upward continuation calculations and 2-D gravity and magnetic modeling provide information on source depths, but lack of lithologic information leaves ambiguity in the estimates. Additionally, several well-defined gravity lows (possibly vent zones) lie coincident with magnetic highs suggesting the presence of dike intrusions at depth which may represent a potentially young source of heat. Soil CO2 fluxes were measured along transects across geophysically-defined faults and fractures as well as young cinder cones along the HSWRZ. This survey generally did not detect CO2 levels above background, with the exception of a weak anomalous flux signal over one young cinder cone. The general lack of observed CO2 flux signals on the HSWRZ is likely due to a combination of lower magmatic CO2 fluxes and relatively high biogenic surface CO2 fluxes which mix with the magmatic signal. Similar surveys at the Puna geothermal field on the Kilauea Lower East Rift Zone (KLERZ) also showed a lack of surface CO2 flux signals, however aqueous geochemistry indicated contribution of magmatic CO2 and He to shallow groundwater here. As magma has been intercepted in geothermal drilling at the Puna field, the lack of measured surface CO2 flux indicative of upflow of magmatic fluids here is likely due to effective “scrubbing” by high groundwater and a mature hydrothermal system. Dissolved inorganic carbon (DIC) concentrations, δ13C compositions and 3He/4He values were sampled at Maui from several shallow

  15. Identification of Reference Genes for qRT-PCR Analysis in Yesso Scallop Patinopecten yessoensis

    PubMed Central

    Feng, Liying; Yu, Qian; Li, Xue; Ning, Xianhui; Wang, Jing; Zou, Jiajun; Zhang, Lingling; Wang, Shi; Hu, Jingjie; Hu, Xiaoli; Bao, Zhenmin

    2013-01-01

    Background Bivalves comprise around 30,000 extant species and have received much attention for their importance in ecosystems, aquaculture and evolutionary studies. Despite the increasing application of real-time quantitative reverse transcription PCR (qRT-PCR) in gene expression studies on bivalve species, little research has been conducted on reference gene selection which is critical for reliable and accurate qRT-PCR analysis. For scallops, systematic evaluation of reference genes that can be used among tissues or embryo/larva stages is lacking, and β-actin (ACT) is most frequently used as qRT-PCR reference gene without validation. Results In this study, 12 commonly used candidate reference genes were selected from the transcriptome data of Yesso scallop (Patinopecten yessoensis) for suitable qRT-PCR reference genes identification. The expression of these genes in 36 tissue samples and 15 embryo/larva samples under normal physiological conditions was examined by qRT-PCR, and their expression stabilities were evaluated using three statistic algorithms, geNorm, NormFinder, and comparative ∆Ct method. Similar results were obtained by the three approaches for the most and the least stably expressed genes. Final comprehensive ranking for the 12 genes combing the results from the three programs showed that, for different tissues, DEAD-box RNA helicase (HELI), ubiquitin (UBQ), and 60S ribosomal protein L16 (RPL16) were the optimal reference genes combination, while for different embryo/larva stages, gene set containing Cytochrome B (CB), Cytochrome C (CC), Histone H3.3 (His3.3), and Glyceraldehyde-3-phosphate dehydrogenase (GAPDH) were recommended for qRT-PCR normalization. ACT was among the least stable genes for both adult tissues and embryos/larvae. Conclusions This work constitutes the first systematic analysis on reference genes selection for qRT-PCR normalization in scallop under normal conditions. The suitable reference genes we recommended will be useful for

  16. [Trocar site herniation (TSH) following laparoscopic cholecystectomy: incidence, pathogenesis, and prevention -- animal study].

    PubMed

    Gamal, Eldin Mohamed; Szabó, Györgyi; Metzger, Péter; Furka, István; Mikó, Irén; Pető, Katalin; Ferencz, Andrea; Sándor, József; Szentkereszty, Zsolt; Sápi, Péter; Wéber, György

    2013-10-01

    Bevezetés/célkitűzés: 1968-ban R. E. Fear először közölt tanulmányt a laparoscopos „Port site” herniáról (Trocar site hernia, TSH), jelenlegi előfordulási gyakorisága eléri a 0,65–2,80%-ot. A sebészi laparoscopia elterjedésével a beavatkozások során szokássá vált, hogy a 10 mm-nél kisebb trokársebeket nem zárják be. Ugyanakkor egyre több közlemény foglalkozik az 5-6 mm-es trokár (továbbiakban: KT) helyén keletkező sérvek elzáródásával. Anyag és módszer: A szerzők oktatási célból 60 kutyán végzett laparoscopos cholecystectomia műtét után 2 és 4 héttel relaparoscopiát végeztek, és posztoperatív adhaesiók után kutatva azt is figyelték, hogy a laparoscopos trokárok intraabdominalis behatolási helyein vannak-e sérvek, különös tekintettel a KT-ra. Eredmények: A 60 kísérleti állat 20%-ában volt látható intraabdominalis sérv, és a sérvek 70%-a a KT helyein helyezkedett el. Következtetések: A megszokott gyakorlattal ellentétben az irodalomban egyre többen hangoztatják a nagy trokárok és a KT ejtette teljes vastagságú hasfali sebek zárásának szükségességét, megelőzendő a sérvek kialakulását és kizáródásuk lehetőségét. Tanulmányunkban a technikai és klinikai lehetőségeket mutatjuk be.

  17. DTMs: discussion of a new multi-resolution function based model

    NASA Astrophysics Data System (ADS)

    Brovelli, M. A.; Biagi, L.; Zamboni, G.

    2012-04-01

    transmitted to the clients. These data allow the complete reconstruction of the terrain at any point. A preliminary implementation of the algorithm had been already presented: however, some optimization problems were present in the automatic choice of the activated splines. Now, all these problems have been solved and the algorithm has been completely implemented. In the presentation, the new multi-resolution approach is discussed and compared with the traditional techniques to interpolate, store and transmit DTMs, considering accuracy and storage requirements. Moreover it is compared with other multi-resolution techniques. Different case studies of smooth and rough terrains have been analyzed: the results provided by our approach are completely satisfactory. The research has been funded by the INTERREG HELI-DEM (Helvetia Italy Digital Elevation Model) project.

  18. HD gas purification for polarized HDice targets production at Jefferson Lab

    SciTech Connect

    Whisnant, Charles; D'Angelo, Annalisa; Colaneri, Luca; Devilbiss, J; Kageya, Tsuneo; Loving, D A; Lowry, Michael; Rizzo, Alessandro; Sandorfi, Andrew; Schaerf, Carlo; Storey, J D; Wallace, C M; Wei, Xiangdong; Zonta, Irene

    2014-06-01

    Solid, frozen-spin targets of molecular HD were rst developed for nuclear physics by a collaboration between Syracuse University and Brookhaven National Lab. They have been successfully used in measurements with photon beams, rst at the Laser-Electron-Gamma-Source [1] and most recently at Je erson Lab during the running of the E06-101 (g14) experiment [2]. Preparations are underway to utilize the targets in future electron experiments after the completion of the 12 GeV JLab upgrade [3]. HD is an attractive target since all of the material is polarizable, of low Z, and requires only modest holding elds. At the same time, the small contributions from the target cell can be subtracted from direct measurements. Reaching the frozen-spin state with both high polarization and a signi cant spin relaxation time requires careful control of H2 and D2 impurities. Commercially available HD contains 0.5 - 2% concentrations of H2 and D2. Low-temperature distillation is required to reduce these concentrations to the 104 level to enable useful target production. This distillation is done using a column lled with heli-pack C [4] to give good separation e ciency. Approximately 12 moles of commercial HD is condensed into the mechanically refrigerated system at the base temperature of 11K. The system is then isolated and the temperature stabilized at 18K producing liquid HD, which is boiled by a resistive heater. The circulation established by the boil-o condensing throughout the column then ltering back down produces a steady-state isotopic separation permitting the extraction of HD gas with very low H2 and D2 content. A residual gas analyzer initially monitors distillation. Once the H2 concentration falls below its useful operating range, samples are periodically collected for analysis using gas chromatography [5] and Raman scattering. Where the measurement techniques overlap, good agreement is obtained. The operation of the distillery and results of gas analysis will be discussed

  19. Aortic curvature as a predictor of intraoperative type Ia endoleak.

    PubMed

    Schuurmann, Richte C L; Ouriel, Kenneth; Muhs, Bart E; Jordan, William D; Ouriel, Richard L; Boersen, Johannes T; de Vries, Jean-Paul P M

    2016-03-01

    Hostile infrarenal neck characteristics are associated with complications such as type Ia endoleak after endovascular aneurysm repair. Aortic neck angulation has been identified as one such characteristic, but its association with complications has not been uniform between studies. Neck angulation assumes triangular oversimplification of the aortic trajectory, which may explain conflicting findings. By contrast, aortic curvature is a measurement that includes the bending rate and tortuosity and may provide better predictive value for neck complications. Data were retrieved from the Heli-FX (Aptus Endosystems, Inc, Sunnyvale, Calif) Aortic Securement System Global Registry (ANCHOR). One cohort included patients who presented with intraoperative endoleak type Ia at the completion angiogram as the indication for EndoAnchors (Aptus Endosystems), and a second cohort comprised those without intraoperative or late type Ia endoleak (controls). The aortic trajectory was divided into six segments with potentially different influence on the stent graft performance: suprarenal, juxtarenal, and infrarenal aortic neck (-30 to -10 mm, -10 to 10 mm, and 10-30 mm from the lowest renal artery, respectively), the entire aortic neck, aneurysm sac, and terminal aorta (20 mm above the bifurcation to the bifurcation). Maximum and average curvature were automatically calculated over the six segments by proprietary custom software. Aortic curvature was compared with other standard neck characteristics, including neck length, neck diameter, maximum aneurysm sac diameter, neck thrombus and calcium thickness and circumference, suprarenal angulation, infrarenal angulation, and the neck tortuosity index. Independent risk factors for intraoperative type Ia endoleak were identified using backwards stepwise logistic regression. For the variables in the final regression model, suitable cutoff values in relation to the prediction of acute type Ia endoleak were defined with the area under the

  20. TESTING GROUND BASED GEOPHYSICAL TECHNIQUES TO REFINE ELECTROMAGNETIC SURVEYS NORTH OF THE 300 AREA HANFORD WASHINGTON

    SciTech Connect

    PETERSEN SW

    2010-12-02

    Airborne electromagnetic (AEM) surveys were flown during fiscal year (FY) 2008 within the 600 Area in an attempt to characterize the underlying subsurface and to aid in the closure and remediation design study goals for the 200-PO-1 Groundwater Operable Unit (OU). The rationale for using the AEM surveys was that airborne surveys can cover large areas rapidly at relatively low costs with minimal cultural impact, and observed geo-electrical anomalies could be correlated with important subsurface geologic and hydrogeologic features. Initial interpretation of the AEM surveys indicated a tenuous correlation with the underlying geology, from which several anomalous zones likely associated with channels/erosional features incised into the Ringold units were identified near the River Corridor. Preliminary modeling resulted in a slightly improved correlation but revealed that more information was required to constrain the modeling (SGW-39674, Airborne Electromagnetic Survey Report, 200-PO-1 Groundwater Operable Unit, 600 Area, Hanford Site). Both time-and frequency domain AEM surveys were collected with the densest coverage occurring adjacent to the Columbia River Corridor. Time domain surveys targeted deeper subsurface features (e.g., top-of-basalt) and were acquired using the HeliGEOTEM{reg_sign} system along north-south flight lines with a nominal 400 m (1,312 ft) spacing. The frequency domain RESOLVE system acquired electromagnetic (EM) data along tighter spaced (100 m [328 ft] and 200 m [656 ft]) north-south profiles in the eastern fifth of the 200-PO-1 Groundwater OU (immediately adjacent to the River Corridor). The overall goal of this study is to provide further quantification of the AEM survey results, using ground based geophysical methods, and to link results to the underlying geology and/or hydrogeology. Specific goals of this project are as follows: (1) Test ground based geophysical techniques for the efficacy in delineating underlying geology; (2) Use ground

  1. Event Study of a Persistent Coronal Hole, its Solar Wind Signatures at L1, and Recurrent Relativistic Electron Enhancements at Geostationary Orbit

    NASA Astrophysics Data System (ADS)

    Rodriguez, Juan; Krista, Larisza

    2017-04-01

    persistent CH. This paper addresses the question: how do the properties of this particularly geoeffective CH and its solar wind manifestations at 1 AU vary from rotation to rotation and how is it distinguished from less geoeffective CHs (and ICMEs) during the same period? The Coronal Hole Automated Recognition and Monitoring (CHARM; Krista and Gallagher, 2009) algorithm is used to identify CHs and to quantify their physical properties (e.g., boundary, area, magnetic field strength and polarity). The Minor Storm (MiSt) algorithm is used to link the CHs to their in situ signatures (e.g., IMF, velocity, number density, temperature) observed by the Advanced Composition Explorer (ACE) satellite. The properties of the CHs and associated geoeffective solar wind properties are evaluated and compared, as well as the Dst geomagnetic index. With these results, we determine whether any of the characteristics of the CHs and their in situ solar wind signatures distinguish them in their relative geoeffectiveness.

  2. Glucose effectiveness, but not insulin sensitivity, is improved after short-term interval training in individuals with type 2 diabetes mellitus: a controlled, randomised, crossover trial.

    PubMed

    Karstoft, Kristian; Clark, Margaret A; Jakobsen, Ida; Knudsen, Sine H; van Hall, Gerrit; Pedersen, Bente K; Solomon, Thomas P J

    2017-08-25

    h continuous glucose monitoring. Two weeks of IWT, but not CWT, improves S G but not S I in individuals with type 2 diabetes. Moreover, changes in S G are associated with changes in glycaemic control. Therefore, increased S G is likely an important mechanism by which training improves glycaemic control in individuals with type 2 diabetes. ClinicalTrials.gov NCT02320526 FUNDING: CFAS is supported by a grant from TrygFonden. During the study period, the Centre of Inflammation and Metabolism (CIM) was supported by a grant from the Danish National Research Foundation (DNRF55). The study was further supported by grants from Diabetesforeningen, Augustinusfonden and Krista og Viggo Petersens Fond. CIM/CFAS is a member of DD2-the Danish Center for Strategic Research in Type 2 Diabetes (the Danish Council for Strategic Research, grant no. 09-067009 and 09-075724).

  3. Airborne imaging for heritage documentation using the Fotokite tethered flying camera

    NASA Astrophysics Data System (ADS)

    Verhoeven, Geert; Lupashin, Sergei; Briese, Christian; Doneus, Michael

    2014-05-01

    Since the beginning of aerial photography, researchers used all kinds of devices (from pigeons, kites, poles, and balloons to rockets) to take still cameras aloft and remotely gather aerial imagery. To date, many of these unmanned devices are still used for what has been referred to as Low-Altitude Aerial Photography or LAAP. In addition to these more traditional camera platforms, radio-controlled (multi-)copter platforms have recently added a new aspect to LAAP. Although model airplanes have been around for several decades, the decreasing cost, increasing functionality and stability of ready-to-fly multi-copter systems has proliferated their use among non-hobbyists. As such, they became a very popular tool for aerial imaging. The overwhelming amount of currently available brands and types (heli-, dual-, tri-, quad-, hexa-, octo-, dodeca-, deca-hexa and deca-octocopters), together with the wide variety of navigation options (e.g. altitude and position hold, waypoint flight) and camera mounts indicate that these platforms are here to stay for some time. Given the multitude of still camera types and the image quality they are currently capable of, endless combinations of low- and high-cost LAAP solutions are available. In addition, LAAP allows for the exploitation of new imaging techniques, as it is often only a matter of lifting the appropriate device (e.g. video cameras, thermal frame imagers, hyperspectral line sensors). Archaeologists were among the first to adopt this technology, as it provided them with a means to easily acquire essential data from a unique point of view, whether for simple illustration purposes of standing historic structures or to compute three-dimensional (3D) models and orthophotographs from excavation areas. However, even very cheap multi-copters models require certain skills to pilot them safely. Additionally, malfunction or overconfidence might lift these devices to altitudes where they can interfere with manned aircrafts. As such, the

  4. Post-Cretaceous Sinistral Transpression in Southwest Alxa: Structural and Paleomagnetic Insights into the Long-Term Slip History of the Altyn Tagh Fault

    NASA Astrophysics Data System (ADS)

    Shumaker, L.; Lippert, P. C.; Darby, B. J.; Ritts, B. D.; Coe, R. S.

    2010-12-01

    Piercing point studies demonstrate two distinct phases of slip on the Altyn Tagh Fault (ATF) following its initiation ~30 Ma. An initial rapid, large magnitude slip phase transitioned to the present slower, smaller slip phase during the Middle Miocene. Piercing point studies near the Modern NE tip of the ATF, the Neogene shortening and cooling record of the Qilian Shan, and the slip history of faults within the Qilian Shan suggest that the >310 km of pre-Middle Miocene ATF displacement was transferred northeast into the Alxa block. Indeed, recent field mapping revealed numerous NE-SW trending sinistral strike-slip faults showing large Cretaceous and minimal Neogene offsets. These structures may have been kinematically linked to the ATF. We test this proposed linkage with new structural and paleomagnetic data from the Hei Shan, the Alxa range closest to the Modern terminus of the ATF. An ENE-WSW trending sub-vertical fault, which we call the Hei Shan Fault (HSF), can be traced WSW toward the ATF and ESE toward sinistral structures in the Heli and Beida Shan. Paleozoic and Mesozoic strata show left-lateral offset along the HSF, supported by slickenlines and S-C fabrics in the ~30m-thick gouge zone. At least nine fault-bound blocks of Paleozoic basement define a strike-slip duplex along the eastern HSF. Several NW-SE trending thrusts and folds that involve basement and Cretaceous strata occur north and south of the HSF. In the western Hei Shan, minor NE-SW trending strike-slip faults display small (tens of meters) dextral displacements. All of these structures appear to be kinematically linked to the HSF. Upper Neogene alluvial gravels show only minor offset and tilting by the HSF and these secondary structures. Paleomagnetic directions from more than 230 samples from 36 new Hei Shan sampling sites demonstrate that significant vertical axis rotations (relative to a stable Eurasia reference frame) occur only within the fault zones and that block rotations adjacent to

  5. Self-organization in magnetic flux ropes

    NASA Astrophysics Data System (ADS)

    Lukin, Vyacheslav S.

    2014-06-01

    This cross-disciplinary special issue on 'Self-organization in magnetic flux ropes' follows in the footsteps of another collection of manuscripts dedicated to the subject of magnetic flux ropes, a volume on 'Physics of magnetic flux ropes' published in the American Geophysical Union's Geophysical Monograph Series in 1990 [1]. Twenty-four years later, this special issue, composed of invited original contributions highlighting ongoing research on the physics of magnetic flux ropes in astrophysical, space and laboratory plasmas, can be considered an update on our state of understanding of this fundamental constituent of any magnetized plasma. Furthermore, by inviting contributions from research groups focused on the study of the origins and properties of magnetic flux ropes in a variety of different environments, we have attempted to underline both the diversity of and the commonalities among magnetic flux ropes throughout the solar system and, indeed, the universe. So, what is a magnetic flux rope? The answer will undoubtedly depend on whom you ask. A flux rope can be as narrow as a few Larmor radii and as wide as the Sun (see, e.g., the contributions by Heli Hietala et al and by Angelous Vourlidas). As described below by Ward Manchester IV et al , they can stretch from the Sun to the Earth in the form of interplanetary coronal mass ejections. Or, as in the Swarthmore Spheromak Experiment described by David Schaffner et al , they can fit into a meter-long laboratory device tended by college students. They can be helical and line-tied (see, e.g., Walter Gekelman et al or J Sears et al ), or toroidal and periodic (see, e.g., John O'Bryan et al or Philippa Browning et al ). They can form in the low plasma beta environment of the solar corona (Tibor Török et al ), the order unity beta plasmas of the solar wind (Stefan Eriksson et al ) and the plasma pressure dominated stellar convection zones (Nicholas Nelson and Mark Miesch). In this special issue, Setthivoine You

  6. Modelo de atmosfera solar ajustado às observações do raio solar em 17GHz

    NASA Astrophysics Data System (ADS)

    Selhorst, C. L.; Silva, A. V. R.; Costa, J. E. R.

    2003-08-01

    O estudo das variações do raio solar durante o ciclo de atividades do Sol e das diferenças em relação à sua distribuição angular nos fornece informações importantes sobre as mudanças na estrutura da atmosfera solar. Neste trabalho foram analisados mais de 3600 mapas do Sol em 17 GHz obtidos pelo Rádio Heliógrafo de Nobeyama (NoRH), durante 1 ciclo de atividade solar (1992-2003). O raio solar foi definido no ponto onde a temperatura de brilho do mapa era equivalente à metade da temperatura do Sol calmo (temperatura mais comum no mapa).Em relação à sua variação ao longo do ciclo solar, o estudo foi dividido em duas partes: a) ajuste de uma circunferência a pontos distribuídos ao redor do Sol todo. Este estudo mostrou uma variação correlacionada com o ciclo de atividade do Sol. b) ajuste da circunferência a pontos situados somente nas regiões polares. Neste caso os resultados mostraram que o raio polar sofre pouca variação durante o ciclo, com tendência à anticorrelação com este. Além disto, a média do raio polar, durante o período analisado, foi 1" menor que o raio medido no Sol todo. Para estudar a distribuição angular do raio solar, comparamos a média da distribuição de 10 mapas no período de mínima atividade solar com a média de 10 mapas no período de máximo, este estudo mostrou um grande aumento do raio na região equatorial no período de máxima atividade solar. As medidas do raio foram usadas como um dos parâmetros para a criação de um modelo atmosférico (além da temperatura de brilho do Sol e do abrilhantamento do limbo observado), onde mostramos que um modelo atmosférico com a região de transição situada a 3500 km fornece um raio 5" menor que as medidas observacionais. Esta incompatibilidade do modelo com os dados observacionais foi contornada com a inclusão de espículas, estas fazem com que o raio solar aumente proporcionalmente à altura que estas atingem na atmosfera solar. A anticorrelação do raio